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s3:smb2_lock: let smbd_smb2_create_cancel() trigger NT_STATUS_CANCELED
[Samba/gebeck_regimport.git] / source3 / smbd / smb2_create.c
blobe188c9fa5ca97e53d259ac6b694b18892fffa39f
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 NTTIME *out_creation_time,
89 NTTIME *out_last_access_time,
90 NTTIME *out_last_write_time,
91 NTTIME *out_change_time,
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 NTTIME out_creation_time = 0;
273 NTTIME out_last_access_time = 0;
274 NTTIME out_last_write_time = 0;
275 NTTIME out_change_time = 0;
276 uint64_t out_allocation_size = 0;
277 uint64_t out_end_of_file = 0;
278 uint32_t out_file_attributes = 0;
279 uint64_t out_file_id_persistent = 0;
280 uint64_t out_file_id_volatile = 0;
281 struct smb2_create_blobs out_context_blobs;
282 DATA_BLOB out_context_buffer;
283 uint16_t out_context_buffer_offset = 0;
284 NTSTATUS status;
285 NTSTATUS error; /* transport error */
286
287 status = smbd_smb2_create_recv(tsubreq,
288 smb2req,
289 &out_oplock_level,
290 &out_create_action,
291 &out_creation_time,
292 &out_last_access_time,
293 &out_last_write_time,
294 &out_change_time,
295 &out_allocation_size,
296 &out_end_of_file,
297 &out_file_attributes,
298 &out_file_id_persistent,
299 &out_file_id_volatile,
300 &out_context_blobs);
301 if (!NT_STATUS_IS_OK(status)) {
302 error = smbd_smb2_request_error(smb2req, status);
303 if (!NT_STATUS_IS_OK(error)) {
304 smbd_server_connection_terminate(smb2req->sconn,
305 nt_errstr(error));
306 return;
307 }
308 return;
309 }
310
311 status = smb2_create_blob_push(smb2req, &out_context_buffer, out_context_blobs);
312 if (!NT_STATUS_IS_OK(status)) {
313 error = smbd_smb2_request_error(smb2req, status);
314 if (!NT_STATUS_IS_OK(error)) {
315 smbd_server_connection_terminate(smb2req->sconn,
316 nt_errstr(error));
317 return;
318 }
319 return;
320 }
321
322 if (out_context_buffer.length > 0) {
323 out_context_buffer_offset = SMB2_HDR_BODY + 0x58;
324 }
325
326 outbody = data_blob_talloc(smb2req->out.vector, NULL, 0x58);
327 if (outbody.data == NULL) {
328 error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
329 if (!NT_STATUS_IS_OK(error)) {
330 smbd_server_connection_terminate(smb2req->sconn,
331 nt_errstr(error));
332 return;
333 }
334 return;
335 }
336
337 SSVAL(outbody.data, 0x00, 0x58 + 1); /* struct size */
338 SCVAL(outbody.data, 0x02,
339 out_oplock_level); /* oplock level */
340 SCVAL(outbody.data, 0x03, 0); /* reserved */
341 SIVAL(outbody.data, 0x04,
342 out_create_action); /* create action */
343 SBVAL(outbody.data, 0x08,
344 out_creation_time); /* creation time */
345 SBVAL(outbody.data, 0x10,
346 out_last_access_time); /* last access time */
347 SBVAL(outbody.data, 0x18,
348 out_last_write_time); /* last write time */
349 SBVAL(outbody.data, 0x20,
350 out_change_time); /* change time */
351 SBVAL(outbody.data, 0x28,
352 out_allocation_size); /* allocation size */
353 SBVAL(outbody.data, 0x30,
354 out_end_of_file); /* end of file */
355 SIVAL(outbody.data, 0x38,
356 out_file_attributes); /* file attributes */
357 SIVAL(outbody.data, 0x3C, 0); /* reserved */
358 SBVAL(outbody.data, 0x40,
359 out_file_id_persistent); /* file id (persistent) */
360 SBVAL(outbody.data, 0x48,
361 out_file_id_volatile); /* file id (volatile) */
362 SIVAL(outbody.data, 0x50,
363 out_context_buffer_offset); /* create contexts offset */
364 SIVAL(outbody.data, 0x54,
365 out_context_buffer.length); /* create contexts length */
366
367 outdyn = out_context_buffer;
368
369 error = smbd_smb2_request_done(smb2req, outbody, &outdyn);
370 if (!NT_STATUS_IS_OK(error)) {
371 smbd_server_connection_terminate(smb2req->sconn,
372 nt_errstr(error));
373 return;
374 }
375 }
376
377 struct smbd_smb2_create_state {
378 struct smbd_smb2_request *smb2req;
379 struct smb_request *smb1req;
380 struct timed_event *te;
381 struct tevent_immediate *im;
382 struct timeval request_time;
383 struct file_id id;
384 DATA_BLOB private_data;
385 uint8_t out_oplock_level;
386 uint32_t out_create_action;
387 NTTIME out_creation_time;
388 NTTIME out_last_access_time;
389 NTTIME out_last_write_time;
390 NTTIME out_change_time;
391 uint64_t out_allocation_size;
392 uint64_t out_end_of_file;
393 uint32_t out_file_attributes;
394 uint64_t out_file_id_persistent;
395 uint64_t out_file_id_volatile;
396 struct smb2_create_blobs out_context_blobs;
397 };
398
399 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
400 struct tevent_context *ev,
401 struct smbd_smb2_request *smb2req,
402 uint8_t in_oplock_level,
403 uint32_t in_impersonation_level,
404 uint32_t in_desired_access,
405 uint32_t in_file_attributes,
406 uint32_t in_share_access,
407 uint32_t in_create_disposition,
408 uint32_t in_create_options,
409 const char *in_name,
410 struct smb2_create_blobs in_context_blobs)
411 {
412 struct tevent_req *req = NULL;
413 struct smbd_smb2_create_state *state = NULL;
414 NTSTATUS status;
415 struct smb_request *smb1req = NULL;
416 files_struct *result = NULL;
417 int info;
418 struct timespec write_time_ts;
419 struct smb2_create_blobs out_context_blobs;
420 int requested_oplock_level;
421 struct smb2_create_blob *dhnc = NULL;
422 struct smb2_create_blob *dh2c = NULL;
423 struct smbXsrv_open *op = NULL;
424
425 ZERO_STRUCT(out_context_blobs);
426
427 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
428 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
429 } else {
430 requested_oplock_level = in_oplock_level;
431 }
432
433
434 if (smb2req->subreq == NULL) {
435 /* New create call. */
436 req = tevent_req_create(mem_ctx, &state,
437 struct smbd_smb2_create_state);
438 if (req == NULL) {
439 return NULL;
440 }
441 state->smb2req = smb2req;
442
443 smb1req = smbd_smb2_fake_smb_request(smb2req);
444 if (tevent_req_nomem(smb1req, req)) {
445 return tevent_req_post(req, ev);
446 }
447 state->smb1req = smb1req;
448 smb2req->subreq = req;
449 DEBUG(10,("smbd_smb2_create: name[%s]\n",
450 in_name));
451 } else {
452 /* Re-entrant create call. */
453 req = smb2req->subreq;
454 state = tevent_req_data(req,
455 struct smbd_smb2_create_state);
456 smb1req = state->smb1req;
457 DEBUG(10,("smbd_smb2_create_send: reentrant for file %s\n",
458 in_name ));
459 }
460
461 dhnc = smb2_create_blob_find(&in_context_blobs,
462 SMB2_CREATE_TAG_DHNC);
463
464 if (dhnc) {
465 if (dhnc->data.length != 16) {
466 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
467 return tevent_req_post(req, ev);
468 }
469 if (in_context_blobs.num_blobs != 1) {
470 /*
471 * DHNC should be the only one.
472 */
473 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
474 return tevent_req_post(req, ev);
475 }
476 }
477
478 dh2c = smb2_create_blob_find(&in_context_blobs,
479 SMB2_CREATE_TAG_DH2C);
480 if (dh2c) {
481 if (dh2c->data.length != 36) {
482 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
483 return tevent_req_post(req, ev);
484 }
485 if (in_context_blobs.num_blobs != 1) {
486 /*
487 * DH2C should be the only one.
488 */
489 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
490 return tevent_req_post(req, ev);
491 }
492 }
493
494 if (IS_IPC(smb1req->conn)) {
495 const char *pipe_name = in_name;
496
497 if (dhnc || dh2c) {
498 /* durable handles are not supported on IPC$ */
499 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
500 return tevent_req_post(req, ev);
501 }
502
503 if (!lp_nt_pipe_support()) {
504 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
505 return tevent_req_post(req, ev);
506 }
507
508 status = open_np_file(smb1req, pipe_name, &result);
509 if (!NT_STATUS_IS_OK(status)) {
510 tevent_req_nterror(req, status);
511 return tevent_req_post(req, ev);
512 }
513 info = FILE_WAS_OPENED;
514 } else if (CAN_PRINT(smb1req->conn)) {
515 if (dhnc || dh2c) {
516 /* durable handles are not supported on printers */
517 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
518 return tevent_req_post(req, ev);
519 }
520
521 status = file_new(smb1req, smb1req->conn, &result);
522 if(!NT_STATUS_IS_OK(status)) {
523 tevent_req_nterror(req, status);
524 return tevent_req_post(req, ev);
525 }
526
527 status = print_spool_open(result, in_name,
528 smb1req->vuid);
529 if (!NT_STATUS_IS_OK(status)) {
530 file_free(smb1req, result);
531 tevent_req_nterror(req, status);
532 return tevent_req_post(req, ev);
533 }
534 info = FILE_WAS_CREATED;
535 } else {
536 char *fname;
537 struct smb2_create_blob *exta = NULL;
538 struct ea_list *ea_list = NULL;
539 struct smb2_create_blob *mxac = NULL;
540 NTTIME max_access_time = 0;
541 struct smb2_create_blob *secd = NULL;
542 struct security_descriptor *sec_desc = NULL;
543 struct smb2_create_blob *dhnq = NULL;
544 struct smb2_create_blob *alsi = NULL;
545 uint64_t allocation_size = 0;
546 struct smb2_create_blob *twrp = NULL;
547 struct smb2_create_blob *qfid = NULL;
548 struct GUID create_guid = GUID_zero();
549 bool update_open = false;
550 bool durable_requested = false;
551 uint32_t durable_timeout_msec = 0;
552 bool do_durable_reconnect = false;
553 struct smb2_create_blob *dh2q = NULL;
554
555 exta = smb2_create_blob_find(&in_context_blobs,
556 SMB2_CREATE_TAG_EXTA);
557 mxac = smb2_create_blob_find(&in_context_blobs,
558 SMB2_CREATE_TAG_MXAC);
559 secd = smb2_create_blob_find(&in_context_blobs,
560 SMB2_CREATE_TAG_SECD);
561 dhnq = smb2_create_blob_find(&in_context_blobs,
562 SMB2_CREATE_TAG_DHNQ);
563 alsi = smb2_create_blob_find(&in_context_blobs,
564 SMB2_CREATE_TAG_ALSI);
565 twrp = smb2_create_blob_find(&in_context_blobs,
566 SMB2_CREATE_TAG_TWRP);
567 qfid = smb2_create_blob_find(&in_context_blobs,
568 SMB2_CREATE_TAG_QFID);
569 dh2q = smb2_create_blob_find(&in_context_blobs,
570 SMB2_CREATE_TAG_DH2Q);
571
572 fname = talloc_strdup(state, in_name);
573 if (tevent_req_nomem(fname, req)) {
574 return tevent_req_post(req, ev);
575 }
576
577 if (exta) {
578 ea_list = read_nttrans_ea_list(mem_ctx,
579 (const char *)exta->data.data, exta->data.length);
580 if (!ea_list) {
581 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
582 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
583 return tevent_req_post(req, ev);
584 }
585 }
586
587 if (mxac) {
588 if (mxac->data.length == 0) {
589 max_access_time = 0;
590 } else if (mxac->data.length == 8) {
591 max_access_time = BVAL(mxac->data.data, 0);
592 } else {
593 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
594 return tevent_req_post(req, ev);
595 }
596 }
597
598 if (secd) {
599 enum ndr_err_code ndr_err;
600
601 sec_desc = talloc_zero(state, struct security_descriptor);
602 if (tevent_req_nomem(sec_desc, req)) {
603 return tevent_req_post(req, ev);
604 }
605
606 ndr_err = ndr_pull_struct_blob(&secd->data,
607 sec_desc, sec_desc,
608 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
609 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
610 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
611 ndr_errstr(ndr_err)));
612 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
613 return tevent_req_post(req, ev);
614 }
615 }
616
617 if (dhnq) {
618 if (dhnq->data.length != 16) {
619 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
620 return tevent_req_post(req, ev);
621 }
622
623 if (dh2q) {
624 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
625 return tevent_req_post(req, ev);
626 }
627
628 /*
629 * durable handle request is processed below.
630 */
631 durable_requested = true;
632 /*
633 * Set the timeout to 16 mins.
634 *
635 * TODO: test this against Windows 2012
636 * as the default for durable v2 is 1 min.
637 */
638 durable_timeout_msec = (16*60*1000);
639 }
640
641 if (dh2q) {
642 const uint8_t *p = dh2q->data.data;
643 uint32_t durable_v2_timeout = 0;
644 DATA_BLOB create_guid_blob;
645
646 if (dh2q->data.length != 32) {
647 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
648 return tevent_req_post(req, ev);
649 }
650
651 if (dhnq) {
652 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
653 return tevent_req_post(req, ev);
654 }
655
656 durable_v2_timeout = IVAL(p, 0);
657 create_guid_blob = data_blob_const(p + 16, 16);
658
659 status = GUID_from_ndr_blob(&create_guid_blob,
660 &create_guid);
661 if (tevent_req_nterror(req, status)) {
662 return tevent_req_post(req, ev);
663 }
664 /*
665 * we need to store the create_guid later
666 */
667 update_open = true;
668
669 /*
670 * durable handle v2 request processed below
671 */
672 durable_requested = true;
673 durable_timeout_msec = durable_v2_timeout;
674 if (durable_timeout_msec == 0) {
675 /*
676 * Set the timeout to 1 min as default.
677 *
678 * This matches Windows 2012.
679 */
680 durable_timeout_msec = (60*1000);
681 }
682 }
683
684 if (dhnc) {
685 NTTIME now = timeval_to_nttime(&smb2req->request_time);
686 uint64_t persistent_id;
687
688 persistent_id = BVAL(dhnc->data.data, 0);
689
690 status = smb2srv_open_recreate(smb2req->sconn->conn,
691 smb1req->conn->session_info,
692 persistent_id, create_guid,
693 now, &op);
694 if (!NT_STATUS_IS_OK(status)) {
695 DEBUG(3, ("smbd_smb2_create_send: "
696 "smb2srv_open_recreate v1 failed: %s\n",
697 nt_errstr(status)));
698 tevent_req_nterror(req, status);
699 return tevent_req_post(req, ev);
700 }
701
702 DEBUG(10, ("smb2_create_send: DHNC: %s recreate the "
703 "smb2srv_open struct for a durable handle.\n",
704 op->global->durable ? "did" : "could not"));
705
706 if (!op->global->durable) {
707 talloc_free(op);
708 tevent_req_nterror(req,
709 NT_STATUS_OBJECT_NAME_NOT_FOUND);
710 return tevent_req_post(req, ev);
711 }
712
713 do_durable_reconnect = true;
714 }
715
716 if (dh2c) {
717 const uint8_t *p = dh2c->data.data;
718 NTTIME now = timeval_to_nttime(&smb2req->request_time);
719 uint64_t persistent_id;
720 DATA_BLOB create_guid_blob;
721
722 persistent_id = BVAL(p, 0);
723 create_guid_blob = data_blob_const(p + 16, 16);
724
725 status = GUID_from_ndr_blob(&create_guid_blob,
726 &create_guid);
727 if (tevent_req_nterror(req, status)) {
728 return tevent_req_post(req, ev);
729 }
730
731 status = smb2srv_open_recreate(smb2req->sconn->conn,
732 smb1req->conn->session_info,
733 persistent_id, create_guid,
734 now, &op);
735 if (!NT_STATUS_IS_OK(status)) {
736 DEBUG(3, ("smbd_smb2_create_send: "
737 "smb2srv_open_recreate v2 failed: %s\n",
738 nt_errstr(status)));
739 tevent_req_nterror(req, status);
740 return tevent_req_post(req, ev);
741 }
742
743 DEBUG(10, ("smb2_create_send: DH2C: %s recreate the "
744 "smb2srv_open struct for a durable handle.\n",
745 op->global->durable ? "did" : "could not"));
746
747 if (!op->global->durable) {
748 talloc_free(op);
749 tevent_req_nterror(req,
750 NT_STATUS_OBJECT_NAME_NOT_FOUND);
751 return tevent_req_post(req, ev);
752 }
753
754 do_durable_reconnect = true;
755 }
756
757 if (alsi) {
758 if (alsi->data.length != 8) {
759 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
760 return tevent_req_post(req, ev);
761 }
762 allocation_size = BVAL(alsi->data.data, 0);
763 }
764
765 if (twrp) {
766 NTTIME nttime;
767 time_t t;
768 struct tm *tm;
769
770 if (twrp->data.length != 8) {
771 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
772 return tevent_req_post(req, ev);
773 }
774
775 nttime = BVAL(twrp->data.data, 0);
776 t = nt_time_to_unix(nttime);
777 tm = gmtime(&t);
778
779 TALLOC_FREE(fname);
780 fname = talloc_asprintf(state,
781 "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
782 tm->tm_year + 1900,
783 tm->tm_mon + 1,
784 tm->tm_mday,
785 tm->tm_hour,
786 tm->tm_min,
787 tm->tm_sec,
788 in_name);
789 if (tevent_req_nomem(fname, req)) {
790 return tevent_req_post(req, ev);
791 }
792 }
793
794 if (qfid) {
795 if (qfid->data.length != 0) {
796 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
797 return tevent_req_post(req, ev);
798 }
799 }
800
801 /* these are ignored for SMB2 */
802 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
803 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
804
805 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
806
807 DEBUG(10, ("smbd_smb2_create_send: open execution phase\n"));
808
809 /*
810 * For the backend file open procedure, there are
811 * two possible modes: durable_reconnect or not.
812 */
813 if (do_durable_reconnect) {
814 DATA_BLOB new_cookie = data_blob_null;
815
816 status = SMB_VFS_DURABLE_RECONNECT(smb1req->conn,
817 smb1req,
818 op,
819 op->global->backend_cookie,
820 op, &result, &new_cookie);
821 if (!NT_STATUS_IS_OK(status)) {
822 NTSTATUS return_status;
823
824 return_status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
825
826 DEBUG(3, ("smbd_smb2_create_send: "
827 "durable_reconnect failed: %s => %s\n",
828 nt_errstr(status),
829 nt_errstr(return_status)));
830
831 tevent_req_nterror(req, return_status);
832 return tevent_req_post(req, ev);
833 }
834
835 data_blob_free(&op->global->backend_cookie);
836 op->global->backend_cookie = new_cookie;
837
838 op->status = NT_STATUS_OK;
839 op->global->disconnect_time = 0;
840
841 status = smbXsrv_open_update(op);
842 if (!NT_STATUS_IS_OK(status)) {
843 tevent_req_nterror(req, status);
844 return tevent_req_post(req, ev);
845 }
846
847 info = FILE_WAS_OPENED;
848 } else {
849 struct smb_filename *smb_fname = NULL;
850
851 /*
852 * For a DFS path the function parse_dfs_path()
853 * will do the path processing.
854 */
855
856 if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
857 /* convert '\\' into '/' */
858 status = check_path_syntax(fname);
859 if (!NT_STATUS_IS_OK(status)) {
860 tevent_req_nterror(req, status);
861 return tevent_req_post(req, ev);
862 }
863 }
864
865 status = filename_convert(req,
866 smb1req->conn,
867 smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
868 fname,
869 0, /* unix_convert flags */
870 NULL, /* ppath_contains_wcards */
871 &smb_fname);
872 if (!NT_STATUS_IS_OK(status)) {
873 tevent_req_nterror(req, status);
874 return tevent_req_post(req, ev);
875 }
876
877 status = SMB_VFS_CREATE_FILE(smb1req->conn,
878 smb1req,
879 0, /* root_dir_fid */
880 smb_fname,
881 in_desired_access,
882 in_share_access,
883 in_create_disposition,
884 in_create_options,
885 in_file_attributes,
886 map_smb2_oplock_levels_to_samba(requested_oplock_level),
887 allocation_size,
888 0, /* private_flags */
889 sec_desc,
890 ea_list,
891 &result,
892 &info);
893 if (!NT_STATUS_IS_OK(status)) {
894 if (open_was_deferred(smb1req->sconn, smb1req->mid)) {
895 return req;
896 }
897 tevent_req_nterror(req, status);
898 return tevent_req_post(req, ev);
899 }
900 op = result->op;
901 }
902
903 /*
904 * here we have op == result->op
905 */
906
907 DEBUG(10, ("smbd_smb2_create_send: "
908 "response construction phase\n"));
909
910 if (mxac) {
911 NTTIME last_write_time;
912
913 unix_timespec_to_nt_time(&last_write_time,
914 result->fsp_name->st.st_ex_mtime);
915 if (last_write_time != max_access_time) {
916 uint8_t p[8];
917 uint32_t max_access_granted;
918 DATA_BLOB blob = data_blob_const(p, sizeof(p));
919
920 status = smbd_calculate_access_mask(smb1req->conn,
921 result->fsp_name,
922 false,
923 SEC_FLAG_MAXIMUM_ALLOWED,
924 &max_access_granted);
925
926 SIVAL(p, 0, NT_STATUS_V(status));
927 SIVAL(p, 4, max_access_granted);
928
929 status = smb2_create_blob_add(state,
930 &out_context_blobs,
931 SMB2_CREATE_TAG_MXAC,
932 blob);
933 if (!NT_STATUS_IS_OK(status)) {
934 tevent_req_nterror(req, status);
935 return tevent_req_post(req, ev);
936 }
937 }
938 }
939
940 if (durable_requested &&
941 BATCH_OPLOCK_TYPE(result->oplock_type))
942 {
943 status = SMB_VFS_DURABLE_COOKIE(result,
944 op,
945 &op->global->backend_cookie);
946 if (!NT_STATUS_IS_OK(status)) {
947 op->global->backend_cookie = data_blob_null;
948 }
949 }
950 if (op->global->backend_cookie.length > 0) {
951 update_open = true;
952
953 op->global->durable = true;
954 op->global->durable_timeout_msec = durable_timeout_msec;
955 }
956
957 if (update_open) {
958 op->global->create_guid = create_guid;
959
960 status = smbXsrv_open_update(op);
961 DEBUG(10, ("smb2_create_send: smbXsrv_open_update "
962 "returned %s\n",
963 nt_errstr(status)));
964 if (!NT_STATUS_IS_OK(status)) {
965 tevent_req_nterror(req, status);
966 return tevent_req_post(req, ev);
967 }
968 }
969
970 if (dhnq && op->global->durable) {
971 uint8_t p[8] = { 0, };
972 DATA_BLOB blob = data_blob_const(p, sizeof(p));
973
974 status = smb2_create_blob_add(state,
975 &out_context_blobs,
976 SMB2_CREATE_TAG_DHNQ,
977 blob);
978 if (!NT_STATUS_IS_OK(status)) {
979 tevent_req_nterror(req, status);
980 return tevent_req_post(req, ev);
981 }
982 }
983
984 if (dh2q && op->global->durable) {
985 uint8_t p[8] = { 0, };
986 DATA_BLOB blob = data_blob_const(p, sizeof(p));
987 uint32_t durable_v2_response_flags = 0;
988
989 SIVAL(p, 0, op->global->durable_timeout_msec);
990 SIVAL(p, 4, durable_v2_response_flags);
991
992 status = smb2_create_blob_add(state, &out_context_blobs,
993 SMB2_CREATE_TAG_DH2Q,
994 blob);
995 if (!NT_STATUS_IS_OK(status)) {
996 tevent_req_nterror(req, status);
997 return tevent_req_post(req, ev);
998 }
999 }
1000
1001 if (qfid) {
1002 uint8_t p[32];
1003 uint64_t file_index = get_FileIndex(result->conn,
1004 &result->fsp_name->st);
1005 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1006
1007 ZERO_STRUCT(p);
1008
1009 /* From conversations with Microsoft engineers at
1010 the MS plugfest. The first 8 bytes are the "volume index"
1011 == inode, the second 8 bytes are the "volume id",
1012 == dev. This will be updated in the SMB2 doc. */
1013 SBVAL(p, 0, file_index);
1014 SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
1015
1016 status = smb2_create_blob_add(state, &out_context_blobs,
1017 SMB2_CREATE_TAG_QFID,
1018 blob);
1019 if (!NT_STATUS_IS_OK(status)) {
1020 tevent_req_nterror(req, status);
1021 return tevent_req_post(req, ev);
1022 }
1023 }
1024 }
1025
1026 smb2req->compat_chain_fsp = smb1req->chain_fsp;
1027
1028 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
1029 state->out_oplock_level = in_oplock_level;
1030 } else {
1031 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
1032 }
1033
1034 if ((in_create_disposition == FILE_SUPERSEDE)
1035 && (info == FILE_WAS_OVERWRITTEN)) {
1036 state->out_create_action = FILE_WAS_SUPERSEDED;
1037 } else {
1038 state->out_create_action = info;
1039 }
1040 state->out_file_attributes = dos_mode(result->conn,
1041 result->fsp_name);
1042 /* Deal with other possible opens having a modified
1043 write time. JRA. */
1044 ZERO_STRUCT(write_time_ts);
1045 get_file_infos(result->file_id, 0, NULL, &write_time_ts);
1046 if (!null_timespec(write_time_ts)) {
1047 update_stat_ex_mtime(&result->fsp_name->st, write_time_ts);
1048 }
1049
1050 unix_timespec_to_nt_time(&state->out_creation_time,
1051 get_create_timespec(smb1req->conn, result,
1052 result->fsp_name));
1053 unix_timespec_to_nt_time(&state->out_last_access_time,
1054 result->fsp_name->st.st_ex_atime);
1055 unix_timespec_to_nt_time(&state->out_last_write_time,
1056 result->fsp_name->st.st_ex_mtime);
1057 unix_timespec_to_nt_time(&state->out_change_time,
1058 get_change_timespec(smb1req->conn, result,
1059 result->fsp_name));
1060 state->out_allocation_size =
1061 SMB_VFS_GET_ALLOC_SIZE(smb1req->conn, result,
1062 &(result->fsp_name->st));
1063 state->out_end_of_file = result->fsp_name->st.st_ex_size;
1064 if (state->out_file_attributes == 0) {
1065 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
1066 }
1067 state->out_file_id_persistent = result->op->global->open_persistent_id;
1068 state->out_file_id_volatile = result->op->global->open_volatile_id;
1069 state->out_context_blobs = out_context_blobs;
1070
1071 DEBUG(10,("smbd_smb2_create_send: %s - %s\n",
1072 fsp_str_dbg(result), fsp_fnum_dbg(result)));
1073
1074 tevent_req_done(req);
1075 return tevent_req_post(req, ev);
1076 }
1077
1078 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
1079 TALLOC_CTX *mem_ctx,
1080 uint8_t *out_oplock_level,
1081 uint32_t *out_create_action,
1082 NTTIME *out_creation_time,
1083 NTTIME *out_last_access_time,
1084 NTTIME *out_last_write_time,
1085 NTTIME *out_change_time,
1086 uint64_t *out_allocation_size,
1087 uint64_t *out_end_of_file,
1088 uint32_t *out_file_attributes,
1089 uint64_t *out_file_id_persistent,
1090 uint64_t *out_file_id_volatile,
1091 struct smb2_create_blobs *out_context_blobs)
1092 {
1093 NTSTATUS status;
1094 struct smbd_smb2_create_state *state = tevent_req_data(req,
1095 struct smbd_smb2_create_state);
1096
1097 if (tevent_req_is_nterror(req, &status)) {
1098 tevent_req_received(req);
1099 return status;
1100 }
1101
1102 *out_oplock_level = state->out_oplock_level;
1103 *out_create_action = state->out_create_action;
1104 *out_creation_time = state->out_creation_time;
1105 *out_last_access_time = state->out_last_access_time;
1106 *out_last_write_time = state->out_last_write_time;
1107 *out_change_time = state->out_change_time;
1108 *out_allocation_size = state->out_allocation_size;
1109 *out_end_of_file = state->out_end_of_file;
1110 *out_file_attributes = state->out_file_attributes;
1111 *out_file_id_persistent = state->out_file_id_persistent;
1112 *out_file_id_volatile = state->out_file_id_volatile;
1113 *out_context_blobs = state->out_context_blobs;
1114
1115 talloc_steal(mem_ctx, state->out_context_blobs.blobs);
1116
1117 tevent_req_received(req);
1118 return NT_STATUS_OK;
1119 }
1120
1121 /*********************************************************
1122 Code for dealing with deferred opens.
1123 *********************************************************/
1124
1125 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
1126 struct timeval *p_request_time,
1127 void **pp_state)
1128 {
1129 struct smbd_smb2_create_state *state = NULL;
1130 struct tevent_req *req = NULL;
1131
1132 if (!smb2req) {
1133 return false;
1134 }
1135 if (smb2req->async_te == NULL) {
1136 return false;
1137 }
1138 req = smb2req->subreq;
1139 if (!req) {
1140 return false;
1141 }
1142 state = tevent_req_data(req, struct smbd_smb2_create_state);
1143 if (!state) {
1144 return false;
1145 }
1146 if (p_request_time) {
1147 *p_request_time = state->request_time;
1148 }
1149 if (pp_state) {
1150 *pp_state = (void *)state->private_data.data;
1151 }
1152 return true;
1153 }
1154
1155 /*********************************************************
1156 Re-process this call early - requested by message or
1157 close.
1158 *********************************************************/
1159
1160 static struct smbd_smb2_request *find_open_smb2req(
1161 struct smbd_server_connection *sconn, uint64_t mid)
1162 {
1163 struct smbd_smb2_request *smb2req;
1164
1165 for (smb2req = sconn->smb2.requests; smb2req; smb2req = smb2req->next) {
1166 uint64_t message_id;
1167 if (smb2req->subreq == NULL) {
1168 /* This message has been processed. */
1169 continue;
1170 }
1171 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1172 /* This message has been processed. */
1173 continue;
1174 }
1175 message_id = get_mid_from_smb2req(smb2req);
1176 if (message_id == mid) {
1177 return smb2req;
1178 }
1179 }
1180 return NULL;
1181 }
1182
1183 bool open_was_deferred_smb2(struct smbd_server_connection *sconn, uint64_t mid)
1184 {
1185 struct smbd_smb2_create_state *state = NULL;
1186 struct smbd_smb2_request *smb2req;
1187
1188 smb2req = find_open_smb2req(sconn, mid);
1189
1190 if (!smb2req) {
1191 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
1192 (unsigned long long)mid));
1193 return false;
1194 }
1195 if (!smb2req->subreq) {
1196 return false;
1197 }
1198 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1199 return false;
1200 }
1201 state = tevent_req_data(smb2req->subreq,
1202 struct smbd_smb2_create_state);
1203 if (!state) {
1204 return false;
1205 }
1206 /* It's not in progress if there's no timeout event. */
1207 if (!state->te) {
1208 return false;
1209 }
1210
1211 DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
1212 (unsigned long long)mid));
1213
1214 return true;
1215 }
1216
1217 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
1218 uint64_t mid)
1219 {
1220 struct smbd_smb2_create_state *state = NULL;
1221
1222 if (!smb2req->subreq) {
1223 return;
1224 }
1225 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1226 return;
1227 }
1228 state = tevent_req_data(smb2req->subreq,
1229 struct smbd_smb2_create_state);
1230 if (!state) {
1231 return;
1232 }
1233
1234 DEBUG(10,("remove_deferred_open_message_smb2_internal: "
1235 "mid %llu\n",
1236 (unsigned long long)mid ));
1237
1238 /* Ensure we don't have any outstanding timer event. */
1239 TALLOC_FREE(state->te);
1240 /* Ensure we don't have any outstanding immediate event. */
1241 TALLOC_FREE(state->im);
1242 }
1243
1244 void remove_deferred_open_message_smb2(
1245 struct smbd_server_connection *sconn, uint64_t mid)
1246 {
1247 struct smbd_smb2_request *smb2req;
1248
1249 smb2req = find_open_smb2req(sconn, mid);
1250
1251 if (!smb2req) {
1252 DEBUG(10,("remove_deferred_open_message_smb2: "
1253 "can't find mid %llu\n",
1254 (unsigned long long)mid ));
1255 return;
1256 }
1257 remove_deferred_open_message_smb2_internal(smb2req, mid);
1258 }
1259
1260 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1261 struct tevent_immediate *im,
1262 void *private_data)
1263 {
1264 struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1265 struct smbd_smb2_request);
1266 struct smbd_server_connection *sconn = smb2req->sconn;
1267 uint64_t mid = get_mid_from_smb2req(smb2req);
1268 NTSTATUS status;
1269
1270 DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1271 "re-dispatching mid %llu\n",
1272 (unsigned long long)mid ));
1273
1274 status = smbd_smb2_request_dispatch(smb2req);
1275 if (!NT_STATUS_IS_OK(status)) {
1276 smbd_server_connection_terminate(sconn, nt_errstr(status));
1277 return;
1278 }
1279 }
1280
1281 bool schedule_deferred_open_message_smb2(
1282 struct smbd_server_connection *sconn, uint64_t mid)
1283 {
1284 struct smbd_smb2_create_state *state = NULL;
1285 struct smbd_smb2_request *smb2req;
1286
1287 smb2req = find_open_smb2req(sconn, mid);
1288
1289 if (!smb2req) {
1290 DEBUG(10,("schedule_deferred_open_message_smb2: "
1291 "can't find mid %llu\n",
1292 (unsigned long long)mid ));
1293 return false;
1294 }
1295 if (!smb2req->subreq) {
1296 return false;
1297 }
1298 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1299 return false;
1300 }
1301 state = tevent_req_data(smb2req->subreq,
1302 struct smbd_smb2_create_state);
1303 if (!state) {
1304 return false;
1305 }
1306
1307 /* Ensure we don't have any outstanding timer event. */
1308 TALLOC_FREE(state->te);
1309 /* Ensure we don't have any outstanding immediate event. */
1310 TALLOC_FREE(state->im);
1311
1312 /*
1313 * This is subtle. We must null out the callback
1314 * before rescheduling, else the first call to
1315 * tevent_req_nterror() causes the _receive()
1316 * function to be called, this causing tevent_req_post()
1317 * to crash.
1318 */
1319 tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1320
1321 state->im = tevent_create_immediate(smb2req);
1322 if (!state->im) {
1323 smbd_server_connection_terminate(smb2req->sconn,
1324 nt_errstr(NT_STATUS_NO_MEMORY));
1325 return false;
1326 }
1327
1328 DEBUG(10,("schedule_deferred_open_message_smb2: "
1329 "re-processing mid %llu\n",
1330 (unsigned long long)mid ));
1331
1332 tevent_schedule_immediate(state->im,
1333 smb2req->sconn->ev_ctx,
1334 smbd_smb2_create_request_dispatch_immediate,
1335 smb2req);
1336
1337 return true;
1338 }
1339
1340 /*********************************************************
1341 Re-process this call.
1342 *********************************************************/
1343
1344 static void smb2_deferred_open_timer(struct event_context *ev,
1345 struct timed_event *te,
1346 struct timeval _tval,
1347 void *private_data)
1348 {
1349 NTSTATUS status;
1350 struct smbd_smb2_create_state *state = NULL;
1351 struct smbd_smb2_request *smb2req = talloc_get_type(private_data,
1352 struct smbd_smb2_request);
1353
1354 DEBUG(10,("smb2_deferred_open_timer: [idx=%d], %s\n",
1355 smb2req->current_idx,
1356 tevent_req_default_print(smb2req->subreq, talloc_tos()) ));
1357
1358 state = tevent_req_data(smb2req->subreq,
1359 struct smbd_smb2_create_state);
1360 if (!state) {
1361 return;
1362 }
1363 /*
1364 * Null this out, don't talloc_free. It will
1365 * be talloc_free'd by the tevent library when
1366 * this returns.
1367 */
1368 state->te = NULL;
1369 /* Ensure we don't have any outstanding immediate event. */
1370 TALLOC_FREE(state->im);
1371
1372 /*
1373 * This is subtle. We must null out the callback
1374 * before rescheduling, else the first call to
1375 * tevent_req_nterror() causes the _receive()
1376 * function to be called, this causing tevent_req_post()
1377 * to crash.
1378 */
1379 tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1380
1381 status = smbd_smb2_request_dispatch(smb2req);
1382
1383 if (!NT_STATUS_IS_OK(status)) {
1384 smbd_server_connection_terminate(smb2req->sconn,
1385 nt_errstr(status));
1386 }
1387 }
1388
1389 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1390 {
1391 struct smbd_smb2_request *smb2req = NULL;
1392 struct smbd_smb2_create_state *state = tevent_req_data(req,
1393 struct smbd_smb2_create_state);
1394 uint64_t mid;
1395
1396 if (!state) {
1397 return false;
1398 }
1399
1400 if (!state->smb2req) {
1401 return false;
1402 }
1403
1404 smb2req = state->smb2req;
1405 mid = get_mid_from_smb2req(smb2req);
1406
1407 if (is_deferred_open_async(state->private_data.data)) {
1408 /* Can't cancel an async create. */
1409 return false;
1410 }
1411
1412 remove_deferred_open_entry(state->id, mid,
1413 messaging_server_id(smb2req->sconn->msg_ctx));
1414 remove_deferred_open_message_smb2_internal(smb2req, mid);
1415 smb2req->cancelled = true;
1416
1417 tevent_req_defer_callback(req, smb2req->sconn->ev_ctx);
1418 tevent_req_nterror(req, NT_STATUS_CANCELLED);
1419 return true;
1420 }
1421
1422 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1423 struct timeval request_time,
1424 struct timeval timeout,
1425 struct file_id id,
1426 char *private_data,
1427 size_t priv_len)
1428 {
1429 struct tevent_req *req = NULL;
1430 struct smbd_smb2_create_state *state = NULL;
1431 struct timeval end_time;
1432
1433 if (!smb2req) {
1434 return false;
1435 }
1436 req = smb2req->subreq;
1437 if (!req) {
1438 return false;
1439 }
1440 state = tevent_req_data(req, struct smbd_smb2_create_state);
1441 if (!state) {
1442 return false;
1443 }
1444 state->id = id;
1445 state->request_time = request_time;
1446 state->private_data = data_blob_talloc(state, private_data,
1447 priv_len);
1448 if (!state->private_data.data) {
1449 return false;
1450 }
1451
1452 /* Re-schedule us to retry on timer expiry. */
1453 end_time = timeval_sum(&request_time, &timeout);
1454
1455 DEBUG(10,("push_deferred_open_message_smb2: "
1456 "timeout at %s\n",
1457 timeval_string(talloc_tos(),
1458 &end_time,
1459 true) ));
1460
1461 state->te = tevent_add_timer(smb2req->sconn->ev_ctx,
1462 state,
1463 end_time,
1464 smb2_deferred_open_timer,
1465 smb2req);
1466 if (!state->te) {
1467 return false;
1468 }
1469
1470 /* allow this request to be canceled */
1471 tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1472
1473 return true;
1474 }
reg import