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VERSION: Re-enable git snapshots.
[Samba.git] / source3 / smbd / smb2_create.c
blob85ad8dd102a6d147c769ce21a85bc2eeadee825e
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 "../lib/util/tevent_ntstatus.h"
29 #include "messages.h"
30
31 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level)
32 {
33 switch(in_oplock_level) {
34 case SMB2_OPLOCK_LEVEL_NONE:
35 return NO_OPLOCK;
36 case SMB2_OPLOCK_LEVEL_II:
37 return LEVEL_II_OPLOCK;
38 case SMB2_OPLOCK_LEVEL_EXCLUSIVE:
39 return EXCLUSIVE_OPLOCK;
40 case SMB2_OPLOCK_LEVEL_BATCH:
41 return BATCH_OPLOCK;
42 case SMB2_OPLOCK_LEVEL_LEASE:
43 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
44 "LEASE_OPLOCK_REQUESTED\n"));
45 return NO_OPLOCK;
46 default:
47 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
48 "unknown level %u\n",
49 (unsigned int)in_oplock_level));
50 return NO_OPLOCK;
51 }
52 }
53
54 static uint8_t map_samba_oplock_levels_to_smb2(int oplock_type)
55 {
56 if (BATCH_OPLOCK_TYPE(oplock_type)) {
57 return SMB2_OPLOCK_LEVEL_BATCH;
58 } else if (EXCLUSIVE_OPLOCK_TYPE(oplock_type)) {
59 return SMB2_OPLOCK_LEVEL_EXCLUSIVE;
60 } else if (oplock_type == LEVEL_II_OPLOCK) {
61 /*
62 * Don't use LEVEL_II_OPLOCK_TYPE here as
63 * this also includes FAKE_LEVEL_II_OPLOCKs
64 * which are internal only.
65 */
66 return SMB2_OPLOCK_LEVEL_II;
67 } else {
68 return SMB2_OPLOCK_LEVEL_NONE;
69 }
70 }
71
72 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
73 struct tevent_context *ev,
74 struct smbd_smb2_request *smb2req,
75 uint8_t in_oplock_level,
76 uint32_t in_impersonation_level,
77 uint32_t in_desired_access,
78 uint32_t in_file_attributes,
79 uint32_t in_share_access,
80 uint32_t in_create_disposition,
81 uint32_t in_create_options,
82 const char *in_name,
83 struct smb2_create_blobs in_context_blobs);
84 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
85 TALLOC_CTX *mem_ctx,
86 uint8_t *out_oplock_level,
87 uint32_t *out_create_action,
88 struct timespec *out_creation_ts,
89 struct timespec *out_last_access_ts,
90 struct timespec *out_last_write_ts,
91 struct timespec *out_change_ts,
92 uint64_t *out_allocation_size,
93 uint64_t *out_end_of_file,
94 uint32_t *out_file_attributes,
95 uint64_t *out_file_id_persistent,
96 uint64_t *out_file_id_volatile,
97 struct smb2_create_blobs *out_context_blobs);
98
99 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq);
100 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *smb2req)
101 {
102 const uint8_t *inbody;
103 const struct iovec *indyniov;
104 uint8_t in_oplock_level;
105 uint32_t in_impersonation_level;
106 uint32_t in_desired_access;
107 uint32_t in_file_attributes;
108 uint32_t in_share_access;
109 uint32_t in_create_disposition;
110 uint32_t in_create_options;
111 uint16_t in_name_offset;
112 uint16_t in_name_length;
113 DATA_BLOB in_name_buffer;
114 char *in_name_string;
115 size_t in_name_string_size;
116 uint32_t name_offset = 0;
117 uint32_t name_available_length = 0;
118 uint32_t in_context_offset;
119 uint32_t in_context_length;
120 DATA_BLOB in_context_buffer;
121 struct smb2_create_blobs in_context_blobs;
122 uint32_t context_offset = 0;
123 uint32_t context_available_length = 0;
124 uint32_t dyn_offset;
125 NTSTATUS status;
126 bool ok;
127 struct tevent_req *tsubreq;
128
129 status = smbd_smb2_request_verify_sizes(smb2req, 0x39);
130 if (!NT_STATUS_IS_OK(status)) {
131 return smbd_smb2_request_error(smb2req, status);
132 }
133 inbody = SMBD_SMB2_IN_BODY_PTR(smb2req);
134
135 in_oplock_level = CVAL(inbody, 0x03);
136 in_impersonation_level = IVAL(inbody, 0x04);
137 in_desired_access = IVAL(inbody, 0x18);
138 in_file_attributes = IVAL(inbody, 0x1C);
139 in_share_access = IVAL(inbody, 0x20);
140 in_create_disposition = IVAL(inbody, 0x24);
141 in_create_options = IVAL(inbody, 0x28);
142 in_name_offset = SVAL(inbody, 0x2C);
143 in_name_length = SVAL(inbody, 0x2E);
144 in_context_offset = IVAL(inbody, 0x30);
145 in_context_length = IVAL(inbody, 0x34);
146
147 /*
148 * First check if the dynamic name and context buffers
149 * are correctly specified.
150 *
151 * Note: That we don't check if the name and context buffers
152 * overlap
153 */
154
155 dyn_offset = SMB2_HDR_BODY + SMBD_SMB2_IN_BODY_LEN(smb2req);
156
157 if (in_name_offset == 0 && in_name_length == 0) {
158 /* This is ok */
159 name_offset = 0;
160 } else if (in_name_offset < dyn_offset) {
161 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
162 } else {
163 name_offset = in_name_offset - dyn_offset;
164 }
165
166 indyniov = SMBD_SMB2_IN_DYN_IOV(smb2req);
167
168 if (name_offset > indyniov->iov_len) {
169 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
170 }
171
172 name_available_length = indyniov->iov_len - name_offset;
173
174 if (in_name_length > name_available_length) {
175 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
176 }
177
178 in_name_buffer.data = (uint8_t *)indyniov->iov_base + name_offset;
179 in_name_buffer.length = in_name_length;
180
181 if (in_context_offset == 0 && in_context_length == 0) {
182 /* This is ok */
183 context_offset = 0;
184 } else if (in_context_offset < dyn_offset) {
185 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
186 } else {
187 context_offset = in_context_offset - dyn_offset;
188 }
189
190 if (context_offset > indyniov->iov_len) {
191 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
192 }
193
194 context_available_length = indyniov->iov_len - context_offset;
195
196 if (in_context_length > context_available_length) {
197 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
198 }
199
200 in_context_buffer.data = (uint8_t *)indyniov->iov_base +
201 context_offset;
202 in_context_buffer.length = in_context_length;
203
204 /*
205 * Now interpret the name and context buffers
206 */
207
208 ok = convert_string_talloc(smb2req, CH_UTF16, CH_UNIX,
209 in_name_buffer.data,
210 in_name_buffer.length,
211 &in_name_string,
212 &in_name_string_size);
213 if (!ok) {
214 return smbd_smb2_request_error(smb2req, NT_STATUS_ILLEGAL_CHARACTER);
215 }
216
217 if (in_name_buffer.length == 0) {
218 in_name_string_size = 0;
219 }
220
221 if (strlen(in_name_string) != in_name_string_size) {
222 return smbd_smb2_request_error(smb2req, NT_STATUS_OBJECT_NAME_INVALID);
223 }
224
225 ZERO_STRUCT(in_context_blobs);
226 status = smb2_create_blob_parse(smb2req, in_context_buffer, &in_context_blobs);
227 if (!NT_STATUS_IS_OK(status)) {
228 return smbd_smb2_request_error(smb2req, status);
229 }
230
231 tsubreq = smbd_smb2_create_send(smb2req,
232 smb2req->sconn->ev_ctx,
233 smb2req,
234 in_oplock_level,
235 in_impersonation_level,
236 in_desired_access,
237 in_file_attributes,
238 in_share_access,
239 in_create_disposition,
240 in_create_options,
241 in_name_string,
242 in_context_blobs);
243 if (tsubreq == NULL) {
244 smb2req->subreq = NULL;
245 return smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
246 }
247 tevent_req_set_callback(tsubreq, smbd_smb2_request_create_done, smb2req);
248
249 /*
250 * For now we keep the logic that we do not send STATUS_PENDING
251 * for sharing violations, so we just wait 2 seconds.
252 *
253 * TODO: we need more tests for this.
254 */
255 return smbd_smb2_request_pending_queue(smb2req, tsubreq, 2000000);
256 }
257
258 static uint64_t get_mid_from_smb2req(struct smbd_smb2_request *smb2req)
259 {
260 uint8_t *reqhdr = SMBD_SMB2_OUT_HDR_PTR(smb2req);
261 return BVAL(reqhdr, SMB2_HDR_MESSAGE_ID);
262 }
263
264 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq)
265 {
266 struct smbd_smb2_request *smb2req = tevent_req_callback_data(tsubreq,
267 struct smbd_smb2_request);
268 DATA_BLOB outbody;
269 DATA_BLOB outdyn;
270 uint8_t out_oplock_level = 0;
271 uint32_t out_create_action = 0;
272 connection_struct *conn = smb2req->tcon->compat;
273 struct timespec out_creation_ts = { 0, };
274 struct timespec out_last_access_ts = { 0, };
275 struct timespec out_last_write_ts = { 0, };
276 struct timespec out_change_ts = { 0, };
277 uint64_t out_allocation_size = 0;
278 uint64_t out_end_of_file = 0;
279 uint32_t out_file_attributes = 0;
280 uint64_t out_file_id_persistent = 0;
281 uint64_t out_file_id_volatile = 0;
282 struct smb2_create_blobs out_context_blobs;
283 DATA_BLOB out_context_buffer;
284 uint16_t out_context_buffer_offset = 0;
285 NTSTATUS status;
286 NTSTATUS error; /* transport error */
287
288 status = smbd_smb2_create_recv(tsubreq,
289 smb2req,
290 &out_oplock_level,
291 &out_create_action,
292 &out_creation_ts,
293 &out_last_access_ts,
294 &out_last_write_ts,
295 &out_change_ts,
296 &out_allocation_size,
297 &out_end_of_file,
298 &out_file_attributes,
299 &out_file_id_persistent,
300 &out_file_id_volatile,
301 &out_context_blobs);
302 if (!NT_STATUS_IS_OK(status)) {
303 error = smbd_smb2_request_error(smb2req, status);
304 if (!NT_STATUS_IS_OK(error)) {
305 smbd_server_connection_terminate(smb2req->sconn,
306 nt_errstr(error));
307 return;
308 }
309 return;
310 }
311
312 status = smb2_create_blob_push(smb2req, &out_context_buffer, out_context_blobs);
313 if (!NT_STATUS_IS_OK(status)) {
314 error = smbd_smb2_request_error(smb2req, status);
315 if (!NT_STATUS_IS_OK(error)) {
316 smbd_server_connection_terminate(smb2req->sconn,
317 nt_errstr(error));
318 return;
319 }
320 return;
321 }
322
323 if (out_context_buffer.length > 0) {
324 out_context_buffer_offset = SMB2_HDR_BODY + 0x58;
325 }
326
327 outbody = data_blob_talloc(smb2req->out.vector, NULL, 0x58);
328 if (outbody.data == NULL) {
329 error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
330 if (!NT_STATUS_IS_OK(error)) {
331 smbd_server_connection_terminate(smb2req->sconn,
332 nt_errstr(error));
333 return;
334 }
335 return;
336 }
337
338 SSVAL(outbody.data, 0x00, 0x58 + 1); /* struct size */
339 SCVAL(outbody.data, 0x02,
340 out_oplock_level); /* oplock level */
341 SCVAL(outbody.data, 0x03, 0); /* reserved */
342 SIVAL(outbody.data, 0x04,
343 out_create_action); /* create action */
344 put_long_date_timespec(conn->ts_res,
345 (char *)outbody.data + 0x08,
346 out_creation_ts); /* creation time */
347 put_long_date_timespec(conn->ts_res,
348 (char *)outbody.data + 0x10,
349 out_last_access_ts); /* last access time */
350 put_long_date_timespec(conn->ts_res,
351 (char *)outbody.data + 0x18,
352 out_last_write_ts); /* last write time */
353 put_long_date_timespec(conn->ts_res,
354 (char *)outbody.data + 0x20,
355 out_change_ts); /* change time */
356 SBVAL(outbody.data, 0x28,
357 out_allocation_size); /* allocation size */
358 SBVAL(outbody.data, 0x30,
359 out_end_of_file); /* end of file */
360 SIVAL(outbody.data, 0x38,
361 out_file_attributes); /* file attributes */
362 SIVAL(outbody.data, 0x3C, 0); /* reserved */
363 SBVAL(outbody.data, 0x40,
364 out_file_id_persistent); /* file id (persistent) */
365 SBVAL(outbody.data, 0x48,
366 out_file_id_volatile); /* file id (volatile) */
367 SIVAL(outbody.data, 0x50,
368 out_context_buffer_offset); /* create contexts offset */
369 SIVAL(outbody.data, 0x54,
370 out_context_buffer.length); /* create contexts length */
371
372 outdyn = out_context_buffer;
373
374 error = smbd_smb2_request_done(smb2req, outbody, &outdyn);
375 if (!NT_STATUS_IS_OK(error)) {
376 smbd_server_connection_terminate(smb2req->sconn,
377 nt_errstr(error));
378 return;
379 }
380 }
381
382 struct smbd_smb2_create_state {
383 struct smbd_smb2_request *smb2req;
384 struct smb_request *smb1req;
385 bool open_was_deferred;
386 struct timed_event *te;
387 struct tevent_immediate *im;
388 struct timeval request_time;
389 struct file_id id;
390 DATA_BLOB private_data;
391 uint8_t out_oplock_level;
392 uint32_t out_create_action;
393 struct timespec out_creation_ts;
394 struct timespec out_last_access_ts;
395 struct timespec out_last_write_ts;
396 struct timespec out_change_ts;
397 uint64_t out_allocation_size;
398 uint64_t out_end_of_file;
399 uint32_t out_file_attributes;
400 uint64_t out_file_id_persistent;
401 uint64_t out_file_id_volatile;
402 struct smb2_create_blobs out_context_blobs;
403 };
404
405 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
406 struct tevent_context *ev,
407 struct smbd_smb2_request *smb2req,
408 uint8_t in_oplock_level,
409 uint32_t in_impersonation_level,
410 uint32_t in_desired_access,
411 uint32_t in_file_attributes,
412 uint32_t in_share_access,
413 uint32_t in_create_disposition,
414 uint32_t in_create_options,
415 const char *in_name,
416 struct smb2_create_blobs in_context_blobs)
417 {
418 struct tevent_req *req = NULL;
419 struct smbd_smb2_create_state *state = NULL;
420 NTSTATUS status;
421 struct smb_request *smb1req = NULL;
422 files_struct *result = NULL;
423 int info;
424 struct timespec write_time_ts;
425 struct smb2_create_blobs out_context_blobs;
426 int requested_oplock_level;
427 struct smb2_create_blob *dhnc = NULL;
428 struct smb2_create_blob *dh2c = NULL;
429 struct smbXsrv_open *op = NULL;
430
431 ZERO_STRUCT(out_context_blobs);
432
433 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
434 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
435 } else {
436 requested_oplock_level = in_oplock_level;
437 }
438
439
440 if (smb2req->subreq == NULL) {
441 /* New create call. */
442 req = tevent_req_create(mem_ctx, &state,
443 struct smbd_smb2_create_state);
444 if (req == NULL) {
445 return NULL;
446 }
447 state->smb2req = smb2req;
448
449 smb1req = smbd_smb2_fake_smb_request(smb2req);
450 if (tevent_req_nomem(smb1req, req)) {
451 return tevent_req_post(req, ev);
452 }
453 state->smb1req = smb1req;
454 smb2req->subreq = req;
455 DEBUG(10,("smbd_smb2_create: name[%s]\n",
456 in_name));
457 } else {
458 /* Re-entrant create call. */
459 req = smb2req->subreq;
460 state = tevent_req_data(req,
461 struct smbd_smb2_create_state);
462 smb1req = state->smb1req;
463 DEBUG(10,("smbd_smb2_create_send: reentrant for file %s\n",
464 in_name ));
465 }
466
467 dhnc = smb2_create_blob_find(&in_context_blobs,
468 SMB2_CREATE_TAG_DHNC);
469
470 if (dhnc) {
471 if (dhnc->data.length != 16) {
472 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
473 return tevent_req_post(req, ev);
474 }
475 if (in_context_blobs.num_blobs != 1) {
476 /*
477 * DHNC should be the only one.
478 */
479 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
480 return tevent_req_post(req, ev);
481 }
482 }
483
484 dh2c = smb2_create_blob_find(&in_context_blobs,
485 SMB2_CREATE_TAG_DH2C);
486 if (dh2c) {
487 if (dh2c->data.length != 36) {
488 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
489 return tevent_req_post(req, ev);
490 }
491 if (in_context_blobs.num_blobs != 1) {
492 /*
493 * DH2C should be the only one.
494 */
495 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
496 return tevent_req_post(req, ev);
497 }
498 }
499
500 if (IS_IPC(smb1req->conn)) {
501 const char *pipe_name = in_name;
502
503 if (dhnc || dh2c) {
504 /* durable handles are not supported on IPC$ */
505 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
506 return tevent_req_post(req, ev);
507 }
508
509 if (!lp_nt_pipe_support()) {
510 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
511 return tevent_req_post(req, ev);
512 }
513
514 status = open_np_file(smb1req, pipe_name, &result);
515 if (!NT_STATUS_IS_OK(status)) {
516 tevent_req_nterror(req, status);
517 return tevent_req_post(req, ev);
518 }
519 info = FILE_WAS_OPENED;
520 } else if (CAN_PRINT(smb1req->conn)) {
521 if (dhnc || dh2c) {
522 /* durable handles are not supported on printers */
523 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
524 return tevent_req_post(req, ev);
525 }
526
527 status = file_new(smb1req, smb1req->conn, &result);
528 if(!NT_STATUS_IS_OK(status)) {
529 tevent_req_nterror(req, status);
530 return tevent_req_post(req, ev);
531 }
532
533 status = print_spool_open(result, in_name,
534 smb1req->vuid);
535 if (!NT_STATUS_IS_OK(status)) {
536 file_free(smb1req, result);
537 tevent_req_nterror(req, status);
538 return tevent_req_post(req, ev);
539 }
540 info = FILE_WAS_CREATED;
541 } else {
542 char *fname;
543 struct smb2_create_blob *exta = NULL;
544 struct ea_list *ea_list = NULL;
545 struct smb2_create_blob *mxac = NULL;
546 NTTIME max_access_time = 0;
547 struct smb2_create_blob *secd = NULL;
548 struct security_descriptor *sec_desc = NULL;
549 struct smb2_create_blob *dhnq = NULL;
550 struct smb2_create_blob *alsi = NULL;
551 uint64_t allocation_size = 0;
552 struct smb2_create_blob *twrp = NULL;
553 struct smb2_create_blob *qfid = NULL;
554 struct GUID create_guid = GUID_zero();
555 bool update_open = false;
556 bool durable_requested = false;
557 uint32_t durable_timeout_msec = 0;
558 bool do_durable_reconnect = false;
559 struct smb2_create_blob *dh2q = NULL;
560
561 exta = smb2_create_blob_find(&in_context_blobs,
562 SMB2_CREATE_TAG_EXTA);
563 mxac = smb2_create_blob_find(&in_context_blobs,
564 SMB2_CREATE_TAG_MXAC);
565 secd = smb2_create_blob_find(&in_context_blobs,
566 SMB2_CREATE_TAG_SECD);
567 dhnq = smb2_create_blob_find(&in_context_blobs,
568 SMB2_CREATE_TAG_DHNQ);
569 alsi = smb2_create_blob_find(&in_context_blobs,
570 SMB2_CREATE_TAG_ALSI);
571 twrp = smb2_create_blob_find(&in_context_blobs,
572 SMB2_CREATE_TAG_TWRP);
573 qfid = smb2_create_blob_find(&in_context_blobs,
574 SMB2_CREATE_TAG_QFID);
575 dh2q = smb2_create_blob_find(&in_context_blobs,
576 SMB2_CREATE_TAG_DH2Q);
577
578 fname = talloc_strdup(state, in_name);
579 if (tevent_req_nomem(fname, req)) {
580 return tevent_req_post(req, ev);
581 }
582
583 if (exta) {
584 ea_list = read_nttrans_ea_list(mem_ctx,
585 (const char *)exta->data.data, exta->data.length);
586 if (!ea_list) {
587 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
588 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
589 return tevent_req_post(req, ev);
590 }
591
592 if (ea_list_has_invalid_name(ea_list)) {
593 tevent_req_nterror(req, STATUS_INVALID_EA_NAME);
594 return tevent_req_post(req, ev);
595 }
596 }
597
598 if (mxac) {
599 if (mxac->data.length == 0) {
600 max_access_time = 0;
601 } else if (mxac->data.length == 8) {
602 max_access_time = BVAL(mxac->data.data, 0);
603 } else {
604 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
605 return tevent_req_post(req, ev);
606 }
607 }
608
609 if (secd) {
610 enum ndr_err_code ndr_err;
611
612 sec_desc = talloc_zero(state, struct security_descriptor);
613 if (tevent_req_nomem(sec_desc, req)) {
614 return tevent_req_post(req, ev);
615 }
616
617 ndr_err = ndr_pull_struct_blob(&secd->data,
618 sec_desc, sec_desc,
619 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
620 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
621 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
622 ndr_errstr(ndr_err)));
623 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
624 return tevent_req_post(req, ev);
625 }
626 }
627
628 if (dhnq) {
629 if (dhnq->data.length != 16) {
630 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
631 return tevent_req_post(req, ev);
632 }
633
634 if (dh2q) {
635 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
636 return tevent_req_post(req, ev);
637 }
638
639 /*
640 * durable handle request is processed below.
641 */
642 durable_requested = true;
643 /*
644 * Set the timeout to 16 mins.
645 *
646 * TODO: test this against Windows 2012
647 * as the default for durable v2 is 1 min.
648 */
649 durable_timeout_msec = (16*60*1000);
650 }
651
652 if (dh2q) {
653 const uint8_t *p = dh2q->data.data;
654 uint32_t durable_v2_timeout = 0;
655 DATA_BLOB create_guid_blob;
656
657 if (dh2q->data.length != 32) {
658 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
659 return tevent_req_post(req, ev);
660 }
661
662 if (dhnq) {
663 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
664 return tevent_req_post(req, ev);
665 }
666
667 durable_v2_timeout = IVAL(p, 0);
668 create_guid_blob = data_blob_const(p + 16, 16);
669
670 status = GUID_from_ndr_blob(&create_guid_blob,
671 &create_guid);
672 if (tevent_req_nterror(req, status)) {
673 return tevent_req_post(req, ev);
674 }
675 /*
676 * we need to store the create_guid later
677 */
678 update_open = true;
679
680 /*
681 * durable handle v2 request processed below
682 */
683 durable_requested = true;
684 durable_timeout_msec = durable_v2_timeout;
685 if (durable_timeout_msec == 0) {
686 /*
687 * Set the timeout to 1 min as default.
688 *
689 * This matches Windows 2012.
690 */
691 durable_timeout_msec = (60*1000);
692 }
693 }
694
695 if (dhnc) {
696 NTTIME now = timeval_to_nttime(&smb2req->request_time);
697 uint64_t persistent_id;
698
699 persistent_id = BVAL(dhnc->data.data, 0);
700
701 status = smb2srv_open_recreate(smb2req->sconn->conn,
702 smb1req->conn->session_info,
703 persistent_id, create_guid,
704 now, &op);
705 if (!NT_STATUS_IS_OK(status)) {
706 DEBUG(3, ("smbd_smb2_create_send: "
707 "smb2srv_open_recreate v1 failed: %s\n",
708 nt_errstr(status)));
709 tevent_req_nterror(req, status);
710 return tevent_req_post(req, ev);
711 }
712
713 DEBUG(10, ("smb2_create_send: DHNC: %s recreate the "
714 "smb2srv_open struct for a durable handle.\n",
715 op->global->durable ? "did" : "could not"));
716
717 if (!op->global->durable) {
718 talloc_free(op);
719 tevent_req_nterror(req,
720 NT_STATUS_OBJECT_NAME_NOT_FOUND);
721 return tevent_req_post(req, ev);
722 }
723
724 do_durable_reconnect = true;
725 }
726
727 if (dh2c) {
728 const uint8_t *p = dh2c->data.data;
729 NTTIME now = timeval_to_nttime(&smb2req->request_time);
730 uint64_t persistent_id;
731 DATA_BLOB create_guid_blob;
732
733 persistent_id = BVAL(p, 0);
734 create_guid_blob = data_blob_const(p + 16, 16);
735
736 status = GUID_from_ndr_blob(&create_guid_blob,
737 &create_guid);
738 if (tevent_req_nterror(req, status)) {
739 return tevent_req_post(req, ev);
740 }
741
742 status = smb2srv_open_recreate(smb2req->sconn->conn,
743 smb1req->conn->session_info,
744 persistent_id, create_guid,
745 now, &op);
746 if (!NT_STATUS_IS_OK(status)) {
747 DEBUG(3, ("smbd_smb2_create_send: "
748 "smb2srv_open_recreate v2 failed: %s\n",
749 nt_errstr(status)));
750 tevent_req_nterror(req, status);
751 return tevent_req_post(req, ev);
752 }
753
754 DEBUG(10, ("smb2_create_send: DH2C: %s recreate the "
755 "smb2srv_open struct for a durable handle.\n",
756 op->global->durable ? "did" : "could not"));
757
758 if (!op->global->durable) {
759 talloc_free(op);
760 tevent_req_nterror(req,
761 NT_STATUS_OBJECT_NAME_NOT_FOUND);
762 return tevent_req_post(req, ev);
763 }
764
765 do_durable_reconnect = true;
766 }
767
768 if (alsi) {
769 if (alsi->data.length != 8) {
770 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
771 return tevent_req_post(req, ev);
772 }
773 allocation_size = BVAL(alsi->data.data, 0);
774 }
775
776 if (twrp) {
777 NTTIME nttime;
778 time_t t;
779 struct tm *tm;
780
781 if (twrp->data.length != 8) {
782 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
783 return tevent_req_post(req, ev);
784 }
785
786 nttime = BVAL(twrp->data.data, 0);
787 t = nt_time_to_unix(nttime);
788 tm = gmtime(&t);
789
790 TALLOC_FREE(fname);
791 fname = talloc_asprintf(state,
792 "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
793 tm->tm_year + 1900,
794 tm->tm_mon + 1,
795 tm->tm_mday,
796 tm->tm_hour,
797 tm->tm_min,
798 tm->tm_sec,
799 in_name);
800 if (tevent_req_nomem(fname, req)) {
801 return tevent_req_post(req, ev);
802 }
803 }
804
805 if (qfid) {
806 if (qfid->data.length != 0) {
807 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
808 return tevent_req_post(req, ev);
809 }
810 }
811
812 /* these are ignored for SMB2 */
813 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
814 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
815
816 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
817
818 DEBUG(10, ("smbd_smb2_create_send: open execution phase\n"));
819
820 /*
821 * For the backend file open procedure, there are
822 * two possible modes: durable_reconnect or not.
823 */
824 if (do_durable_reconnect) {
825 DATA_BLOB new_cookie = data_blob_null;
826
827 status = SMB_VFS_DURABLE_RECONNECT(smb1req->conn,
828 smb1req,
829 op,
830 op->global->backend_cookie,
831 op, &result, &new_cookie);
832 if (!NT_STATUS_IS_OK(status)) {
833 NTSTATUS return_status;
834
835 return_status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
836
837 DEBUG(3, ("smbd_smb2_create_send: "
838 "durable_reconnect failed: %s => %s\n",
839 nt_errstr(status),
840 nt_errstr(return_status)));
841
842 tevent_req_nterror(req, return_status);
843 return tevent_req_post(req, ev);
844 }
845
846 data_blob_free(&op->global->backend_cookie);
847 op->global->backend_cookie = new_cookie;
848
849 op->status = NT_STATUS_OK;
850 op->global->disconnect_time = 0;
851
852 /* save the timout for later update */
853 durable_timeout_msec = op->global->durable_timeout_msec;
854
855 update_open = true;
856
857 info = FILE_WAS_OPENED;
858 } else {
859 struct smb_filename *smb_fname = NULL;
860
861 /*
862 * For a DFS path the function parse_dfs_path()
863 * will do the path processing.
864 */
865
866 if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
867 /* convert '\\' into '/' */
868 status = check_path_syntax(fname);
869 if (!NT_STATUS_IS_OK(status)) {
870 tevent_req_nterror(req, status);
871 return tevent_req_post(req, ev);
872 }
873 }
874
875 status = filename_convert(req,
876 smb1req->conn,
877 smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
878 fname,
879 UCF_PREP_CREATEFILE,
880 NULL, /* ppath_contains_wcards */
881 &smb_fname);
882 if (!NT_STATUS_IS_OK(status)) {
883 tevent_req_nterror(req, status);
884 return tevent_req_post(req, ev);
885 }
886
887 status = SMB_VFS_CREATE_FILE(smb1req->conn,
888 smb1req,
889 0, /* root_dir_fid */
890 smb_fname,
891 in_desired_access,
892 in_share_access,
893 in_create_disposition,
894 in_create_options,
895 in_file_attributes,
896 map_smb2_oplock_levels_to_samba(requested_oplock_level),
897 allocation_size,
898 0, /* private_flags */
899 sec_desc,
900 ea_list,
901 &result,
902 &info);
903 if (!NT_STATUS_IS_OK(status)) {
904 if (open_was_deferred(smb1req->sconn, smb1req->mid)) {
905 return req;
906 }
907 tevent_req_nterror(req, status);
908 return tevent_req_post(req, ev);
909 }
910 op = result->op;
911 }
912
913 /*
914 * here we have op == result->op
915 */
916
917 DEBUG(10, ("smbd_smb2_create_send: "
918 "response construction phase\n"));
919
920 if (mxac) {
921 NTTIME last_write_time;
922
923 unix_timespec_to_nt_time(&last_write_time,
924 result->fsp_name->st.st_ex_mtime);
925 if (last_write_time != max_access_time) {
926 uint8_t p[8];
927 uint32_t max_access_granted;
928 DATA_BLOB blob = data_blob_const(p, sizeof(p));
929
930 status = smbd_calculate_access_mask(smb1req->conn,
931 result->fsp_name,
932 SEC_FLAG_MAXIMUM_ALLOWED,
933 &max_access_granted);
934
935 SIVAL(p, 0, NT_STATUS_V(status));
936 SIVAL(p, 4, max_access_granted);
937
938 status = smb2_create_blob_add(state,
939 &out_context_blobs,
940 SMB2_CREATE_TAG_MXAC,
941 blob);
942 if (!NT_STATUS_IS_OK(status)) {
943 tevent_req_nterror(req, status);
944 return tevent_req_post(req, ev);
945 }
946 }
947 }
948
949 if (durable_requested &&
950 BATCH_OPLOCK_TYPE(result->oplock_type))
951 {
952 status = SMB_VFS_DURABLE_COOKIE(result,
953 op,
954 &op->global->backend_cookie);
955 if (!NT_STATUS_IS_OK(status)) {
956 op->global->backend_cookie = data_blob_null;
957 }
958 }
959 if (op->global->backend_cookie.length > 0) {
960 update_open = true;
961
962 op->global->durable = true;
963 op->global->durable_timeout_msec = durable_timeout_msec;
964 }
965
966 if (update_open) {
967 op->global->create_guid = create_guid;
968
969 status = smbXsrv_open_update(op);
970 DEBUG(10, ("smb2_create_send: smbXsrv_open_update "
971 "returned %s\n",
972 nt_errstr(status)));
973 if (!NT_STATUS_IS_OK(status)) {
974 tevent_req_nterror(req, status);
975 return tevent_req_post(req, ev);
976 }
977 }
978
979 if (dhnq && op->global->durable) {
980 uint8_t p[8] = { 0, };
981 DATA_BLOB blob = data_blob_const(p, sizeof(p));
982
983 status = smb2_create_blob_add(state,
984 &out_context_blobs,
985 SMB2_CREATE_TAG_DHNQ,
986 blob);
987 if (!NT_STATUS_IS_OK(status)) {
988 tevent_req_nterror(req, status);
989 return tevent_req_post(req, ev);
990 }
991 }
992
993 if (dh2q && op->global->durable) {
994 uint8_t p[8] = { 0, };
995 DATA_BLOB blob = data_blob_const(p, sizeof(p));
996 uint32_t durable_v2_response_flags = 0;
997
998 SIVAL(p, 0, op->global->durable_timeout_msec);
999 SIVAL(p, 4, durable_v2_response_flags);
1000
1001 status = smb2_create_blob_add(state, &out_context_blobs,
1002 SMB2_CREATE_TAG_DH2Q,
1003 blob);
1004 if (!NT_STATUS_IS_OK(status)) {
1005 tevent_req_nterror(req, status);
1006 return tevent_req_post(req, ev);
1007 }
1008 }
1009
1010 if (qfid) {
1011 uint8_t p[32];
1012 uint64_t file_index = get_FileIndex(result->conn,
1013 &result->fsp_name->st);
1014 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1015
1016 ZERO_STRUCT(p);
1017
1018 /* From conversations with Microsoft engineers at
1019 the MS plugfest. The first 8 bytes are the "volume index"
1020 == inode, the second 8 bytes are the "volume id",
1021 == dev. This will be updated in the SMB2 doc. */
1022 SBVAL(p, 0, file_index);
1023 SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
1024
1025 status = smb2_create_blob_add(state, &out_context_blobs,
1026 SMB2_CREATE_TAG_QFID,
1027 blob);
1028 if (!NT_STATUS_IS_OK(status)) {
1029 tevent_req_nterror(req, status);
1030 return tevent_req_post(req, ev);
1031 }
1032 }
1033 }
1034
1035 smb2req->compat_chain_fsp = smb1req->chain_fsp;
1036
1037 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
1038 state->out_oplock_level = in_oplock_level;
1039 } else {
1040 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
1041 }
1042
1043 if ((in_create_disposition == FILE_SUPERSEDE)
1044 && (info == FILE_WAS_OVERWRITTEN)) {
1045 state->out_create_action = FILE_WAS_SUPERSEDED;
1046 } else {
1047 state->out_create_action = info;
1048 }
1049 state->out_file_attributes = dos_mode(result->conn,
1050 result->fsp_name);
1051 /* Deal with other possible opens having a modified
1052 write time. JRA. */
1053 ZERO_STRUCT(write_time_ts);
1054 get_file_infos(result->file_id, 0, NULL, &write_time_ts);
1055 if (!null_timespec(write_time_ts)) {
1056 update_stat_ex_mtime(&result->fsp_name->st, write_time_ts);
1057 }
1058
1059 state->out_creation_ts = get_create_timespec(smb1req->conn,
1060 result, result->fsp_name);
1061 state->out_last_access_ts = result->fsp_name->st.st_ex_atime;
1062 state->out_last_write_ts = result->fsp_name->st.st_ex_mtime;
1063 state->out_change_ts = get_change_timespec(smb1req->conn,
1064 result, result->fsp_name);
1065 state->out_allocation_size =
1066 SMB_VFS_GET_ALLOC_SIZE(smb1req->conn, result,
1067 &(result->fsp_name->st));
1068 state->out_end_of_file = result->fsp_name->st.st_ex_size;
1069 if (state->out_file_attributes == 0) {
1070 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
1071 }
1072 state->out_file_id_persistent = result->op->global->open_persistent_id;
1073 state->out_file_id_volatile = result->op->global->open_volatile_id;
1074 state->out_context_blobs = out_context_blobs;
1075
1076 DEBUG(10,("smbd_smb2_create_send: %s - %s\n",
1077 fsp_str_dbg(result), fsp_fnum_dbg(result)));
1078
1079 tevent_req_done(req);
1080 return tevent_req_post(req, ev);
1081 }
1082
1083 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
1084 TALLOC_CTX *mem_ctx,
1085 uint8_t *out_oplock_level,
1086 uint32_t *out_create_action,
1087 struct timespec *out_creation_ts,
1088 struct timespec *out_last_access_ts,
1089 struct timespec *out_last_write_ts,
1090 struct timespec *out_change_ts,
1091 uint64_t *out_allocation_size,
1092 uint64_t *out_end_of_file,
1093 uint32_t *out_file_attributes,
1094 uint64_t *out_file_id_persistent,
1095 uint64_t *out_file_id_volatile,
1096 struct smb2_create_blobs *out_context_blobs)
1097 {
1098 NTSTATUS status;
1099 struct smbd_smb2_create_state *state = tevent_req_data(req,
1100 struct smbd_smb2_create_state);
1101
1102 if (tevent_req_is_nterror(req, &status)) {
1103 tevent_req_received(req);
1104 return status;
1105 }
1106
1107 *out_oplock_level = state->out_oplock_level;
1108 *out_create_action = state->out_create_action;
1109 *out_creation_ts = state->out_creation_ts;
1110 *out_last_access_ts = state->out_last_access_ts;
1111 *out_last_write_ts = state->out_last_write_ts;
1112 *out_change_ts = state->out_change_ts;
1113 *out_allocation_size = state->out_allocation_size;
1114 *out_end_of_file = state->out_end_of_file;
1115 *out_file_attributes = state->out_file_attributes;
1116 *out_file_id_persistent = state->out_file_id_persistent;
1117 *out_file_id_volatile = state->out_file_id_volatile;
1118 *out_context_blobs = state->out_context_blobs;
1119
1120 talloc_steal(mem_ctx, state->out_context_blobs.blobs);
1121
1122 tevent_req_received(req);
1123 return NT_STATUS_OK;
1124 }
1125
1126 /*********************************************************
1127 Code for dealing with deferred opens.
1128 *********************************************************/
1129
1130 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
1131 struct timeval *p_request_time,
1132 void **pp_state)
1133 {
1134 struct smbd_smb2_create_state *state = NULL;
1135 struct tevent_req *req = NULL;
1136
1137 if (!smb2req) {
1138 return false;
1139 }
1140 req = smb2req->subreq;
1141 if (!req) {
1142 return false;
1143 }
1144 state = tevent_req_data(req, struct smbd_smb2_create_state);
1145 if (!state) {
1146 return false;
1147 }
1148 if (!state->open_was_deferred) {
1149 return false;
1150 }
1151 if (p_request_time) {
1152 *p_request_time = state->request_time;
1153 }
1154 if (pp_state) {
1155 *pp_state = (void *)state->private_data.data;
1156 }
1157 return true;
1158 }
1159
1160 /*********************************************************
1161 Re-process this call early - requested by message or
1162 close.
1163 *********************************************************/
1164
1165 static struct smbd_smb2_request *find_open_smb2req(
1166 struct smbd_server_connection *sconn, uint64_t mid)
1167 {
1168 struct smbd_smb2_request *smb2req;
1169
1170 for (smb2req = sconn->smb2.requests; smb2req; smb2req = smb2req->next) {
1171 uint64_t message_id;
1172 if (smb2req->subreq == NULL) {
1173 /* This message has been processed. */
1174 continue;
1175 }
1176 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1177 /* This message has been processed. */
1178 continue;
1179 }
1180 message_id = get_mid_from_smb2req(smb2req);
1181 if (message_id == mid) {
1182 return smb2req;
1183 }
1184 }
1185 return NULL;
1186 }
1187
1188 bool open_was_deferred_smb2(struct smbd_server_connection *sconn, uint64_t mid)
1189 {
1190 struct smbd_smb2_create_state *state = NULL;
1191 struct smbd_smb2_request *smb2req;
1192
1193 smb2req = find_open_smb2req(sconn, mid);
1194
1195 if (!smb2req) {
1196 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
1197 (unsigned long long)mid));
1198 return false;
1199 }
1200 if (!smb2req->subreq) {
1201 return false;
1202 }
1203 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1204 return false;
1205 }
1206 state = tevent_req_data(smb2req->subreq,
1207 struct smbd_smb2_create_state);
1208 if (!state) {
1209 return false;
1210 }
1211 /* It's not in progress if there's no timeout event. */
1212 if (!state->open_was_deferred) {
1213 return false;
1214 }
1215
1216 DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
1217 (unsigned long long)mid));
1218
1219 return true;
1220 }
1221
1222 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
1223 uint64_t mid)
1224 {
1225 struct smbd_smb2_create_state *state = NULL;
1226
1227 if (!smb2req->subreq) {
1228 return;
1229 }
1230 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1231 return;
1232 }
1233 state = tevent_req_data(smb2req->subreq,
1234 struct smbd_smb2_create_state);
1235 if (!state) {
1236 return;
1237 }
1238
1239 DEBUG(10,("remove_deferred_open_message_smb2_internal: "
1240 "mid %llu\n",
1241 (unsigned long long)mid ));
1242
1243 state->open_was_deferred = false;
1244 /* Ensure we don't have any outstanding timer event. */
1245 TALLOC_FREE(state->te);
1246 /* Ensure we don't have any outstanding immediate event. */
1247 TALLOC_FREE(state->im);
1248 }
1249
1250 void remove_deferred_open_message_smb2(
1251 struct smbd_server_connection *sconn, uint64_t mid)
1252 {
1253 struct smbd_smb2_request *smb2req;
1254
1255 smb2req = find_open_smb2req(sconn, mid);
1256
1257 if (!smb2req) {
1258 DEBUG(10,("remove_deferred_open_message_smb2: "
1259 "can't find mid %llu\n",
1260 (unsigned long long)mid ));
1261 return;
1262 }
1263 remove_deferred_open_message_smb2_internal(smb2req, mid);
1264 }
1265
1266 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1267 struct tevent_immediate *im,
1268 void *private_data)
1269 {
1270 struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1271 struct smbd_smb2_request);
1272 struct smbd_server_connection *sconn = smb2req->sconn;
1273 uint64_t mid = get_mid_from_smb2req(smb2req);
1274 NTSTATUS status;
1275
1276 DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1277 "re-dispatching mid %llu\n",
1278 (unsigned long long)mid ));
1279
1280 status = smbd_smb2_request_dispatch(smb2req);
1281 if (!NT_STATUS_IS_OK(status)) {
1282 smbd_server_connection_terminate(sconn, nt_errstr(status));
1283 return;
1284 }
1285 }
1286
1287 bool schedule_deferred_open_message_smb2(
1288 struct smbd_server_connection *sconn, uint64_t mid)
1289 {
1290 struct smbd_smb2_create_state *state = NULL;
1291 struct smbd_smb2_request *smb2req;
1292
1293 smb2req = find_open_smb2req(sconn, mid);
1294
1295 if (!smb2req) {
1296 DEBUG(10,("schedule_deferred_open_message_smb2: "
1297 "can't find mid %llu\n",
1298 (unsigned long long)mid ));
1299 return false;
1300 }
1301 if (!smb2req->subreq) {
1302 return false;
1303 }
1304 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1305 return false;
1306 }
1307 state = tevent_req_data(smb2req->subreq,
1308 struct smbd_smb2_create_state);
1309 if (!state) {
1310 return false;
1311 }
1312
1313 /* Ensure we don't have any outstanding timer event. */
1314 TALLOC_FREE(state->te);
1315 /* Ensure we don't have any outstanding immediate event. */
1316 TALLOC_FREE(state->im);
1317
1318 /*
1319 * This is subtle. We must null out the callback
1320 * before rescheduling, else the first call to
1321 * tevent_req_nterror() causes the _receive()
1322 * function to be called, this causing tevent_req_post()
1323 * to crash.
1324 */
1325 tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1326
1327 state->im = tevent_create_immediate(smb2req);
1328 if (!state->im) {
1329 smbd_server_connection_terminate(smb2req->sconn,
1330 nt_errstr(NT_STATUS_NO_MEMORY));
1331 return false;
1332 }
1333
1334 DEBUG(10,("schedule_deferred_open_message_smb2: "
1335 "re-processing mid %llu\n",
1336 (unsigned long long)mid ));
1337
1338 tevent_schedule_immediate(state->im,
1339 smb2req->sconn->ev_ctx,
1340 smbd_smb2_create_request_dispatch_immediate,
1341 smb2req);
1342
1343 return true;
1344 }
1345
1346 /*********************************************************
1347 Re-process this call.
1348 *********************************************************/
1349
1350 static void smb2_deferred_open_timer(struct event_context *ev,
1351 struct timed_event *te,
1352 struct timeval _tval,
1353 void *private_data)
1354 {
1355 NTSTATUS status;
1356 struct smbd_smb2_create_state *state = NULL;
1357 struct smbd_smb2_request *smb2req = talloc_get_type(private_data,
1358 struct smbd_smb2_request);
1359
1360 DEBUG(10,("smb2_deferred_open_timer: [idx=%d], %s\n",
1361 smb2req->current_idx,
1362 tevent_req_default_print(smb2req->subreq, talloc_tos()) ));
1363
1364 state = tevent_req_data(smb2req->subreq,
1365 struct smbd_smb2_create_state);
1366 if (!state) {
1367 return;
1368 }
1369 /*
1370 * Null this out, don't talloc_free. It will
1371 * be talloc_free'd by the tevent library when
1372 * this returns.
1373 */
1374 state->te = NULL;
1375 /* Ensure we don't have any outstanding immediate event. */
1376 TALLOC_FREE(state->im);
1377
1378 /*
1379 * This is subtle. We must null out the callback
1380 * before rescheduling, else the first call to
1381 * tevent_req_nterror() causes the _receive()
1382 * function to be called, this causing tevent_req_post()
1383 * to crash.
1384 */
1385 tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1386
1387 status = smbd_smb2_request_dispatch(smb2req);
1388
1389 if (!NT_STATUS_IS_OK(status)) {
1390 smbd_server_connection_terminate(smb2req->sconn,
1391 nt_errstr(status));
1392 }
1393 }
1394
1395 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1396 {
1397 struct smbd_smb2_request *smb2req = NULL;
1398 struct smbd_smb2_create_state *state = tevent_req_data(req,
1399 struct smbd_smb2_create_state);
1400 uint64_t mid;
1401
1402 if (!state) {
1403 return false;
1404 }
1405
1406 if (!state->smb2req) {
1407 return false;
1408 }
1409
1410 smb2req = state->smb2req;
1411 mid = get_mid_from_smb2req(smb2req);
1412
1413 if (is_deferred_open_async(state->private_data.data)) {
1414 /* Can't cancel an async create. */
1415 return false;
1416 }
1417
1418 remove_deferred_open_entry(state->id, mid,
1419 messaging_server_id(smb2req->sconn->msg_ctx));
1420 remove_deferred_open_message_smb2_internal(smb2req, mid);
1421
1422 tevent_req_defer_callback(req, smb2req->sconn->ev_ctx);
1423 tevent_req_nterror(req, NT_STATUS_CANCELLED);
1424 return true;
1425 }
1426
1427 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1428 struct timeval request_time,
1429 struct timeval timeout,
1430 struct file_id id,
1431 char *private_data,
1432 size_t priv_len)
1433 {
1434 struct tevent_req *req = NULL;
1435 struct smbd_smb2_create_state *state = NULL;
1436 struct timeval end_time;
1437
1438 if (!smb2req) {
1439 return false;
1440 }
1441 req = smb2req->subreq;
1442 if (!req) {
1443 return false;
1444 }
1445 state = tevent_req_data(req, struct smbd_smb2_create_state);
1446 if (!state) {
1447 return false;
1448 }
1449 state->id = id;
1450 state->request_time = request_time;
1451 state->private_data = data_blob_talloc(state, private_data,
1452 priv_len);
1453 if (!state->private_data.data) {
1454 return false;
1455 }
1456
1457 /* Re-schedule us to retry on timer expiry. */
1458 end_time = timeval_sum(&request_time, &timeout);
1459
1460 DEBUG(10,("push_deferred_open_message_smb2: "
1461 "timeout at %s\n",
1462 timeval_string(talloc_tos(),
1463 &end_time,
1464 true) ));
1465
1466 state->open_was_deferred = true;
1467 state->te = tevent_add_timer(smb2req->sconn->ev_ctx,
1468 state,
1469 end_time,
1470 smb2_deferred_open_timer,
1471 smb2req);
1472 if (!state->te) {
1473 return false;
1474 }
1475
1476 /* allow this request to be canceled */
1477 tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1478
1479 return true;
1480 }
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