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s3:smb2_create: check for SMB2_CREATE_TAG_DHNC first
[Samba/bb.git] / source3 / smbd / smb2_create.c
blob2c308b1ee65ffb4a76fc353074c8b8caf39a3d13
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 if (smb2req->cancelled) {
288 uint64_t mid = get_mid_from_smb2req(smb2req);
289 DEBUG(10,("smbd_smb2_request_create_done: cancelled mid %llu\n",
290 (unsigned long long)mid ));
291 error = smbd_smb2_request_error(smb2req, NT_STATUS_CANCELLED);
292 if (!NT_STATUS_IS_OK(error)) {
293 smbd_server_connection_terminate(smb2req->sconn,
294 nt_errstr(error));
295 return;
296 }
297 return;
298 }
299
300 status = smbd_smb2_create_recv(tsubreq,
301 smb2req,
302 &out_oplock_level,
303 &out_create_action,
304 &out_creation_time,
305 &out_last_access_time,
306 &out_last_write_time,
307 &out_change_time,
308 &out_allocation_size,
309 &out_end_of_file,
310 &out_file_attributes,
311 &out_file_id_persistent,
312 &out_file_id_volatile,
313 &out_context_blobs);
314 if (!NT_STATUS_IS_OK(status)) {
315 error = smbd_smb2_request_error(smb2req, status);
316 if (!NT_STATUS_IS_OK(error)) {
317 smbd_server_connection_terminate(smb2req->sconn,
318 nt_errstr(error));
319 return;
320 }
321 return;
322 }
323
324 status = smb2_create_blob_push(smb2req, &out_context_buffer, out_context_blobs);
325 if (!NT_STATUS_IS_OK(status)) {
326 error = smbd_smb2_request_error(smb2req, status);
327 if (!NT_STATUS_IS_OK(error)) {
328 smbd_server_connection_terminate(smb2req->sconn,
329 nt_errstr(error));
330 return;
331 }
332 return;
333 }
334
335 if (out_context_buffer.length > 0) {
336 out_context_buffer_offset = SMB2_HDR_BODY + 0x58;
337 }
338
339 outbody = data_blob_talloc(smb2req->out.vector, NULL, 0x58);
340 if (outbody.data == NULL) {
341 error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
342 if (!NT_STATUS_IS_OK(error)) {
343 smbd_server_connection_terminate(smb2req->sconn,
344 nt_errstr(error));
345 return;
346 }
347 return;
348 }
349
350 SSVAL(outbody.data, 0x00, 0x58 + 1); /* struct size */
351 SCVAL(outbody.data, 0x02,
352 out_oplock_level); /* oplock level */
353 SCVAL(outbody.data, 0x03, 0); /* reserved */
354 SIVAL(outbody.data, 0x04,
355 out_create_action); /* create action */
356 SBVAL(outbody.data, 0x08,
357 out_creation_time); /* creation time */
358 SBVAL(outbody.data, 0x10,
359 out_last_access_time); /* last access time */
360 SBVAL(outbody.data, 0x18,
361 out_last_write_time); /* last write time */
362 SBVAL(outbody.data, 0x20,
363 out_change_time); /* change time */
364 SBVAL(outbody.data, 0x28,
365 out_allocation_size); /* allocation size */
366 SBVAL(outbody.data, 0x30,
367 out_end_of_file); /* end of file */
368 SIVAL(outbody.data, 0x38,
369 out_file_attributes); /* file attributes */
370 SIVAL(outbody.data, 0x3C, 0); /* reserved */
371 SBVAL(outbody.data, 0x40,
372 out_file_id_persistent); /* file id (persistent) */
373 SBVAL(outbody.data, 0x48,
374 out_file_id_volatile); /* file id (volatile) */
375 SIVAL(outbody.data, 0x50,
376 out_context_buffer_offset); /* create contexts offset */
377 SIVAL(outbody.data, 0x54,
378 out_context_buffer.length); /* create contexts length */
379
380 outdyn = out_context_buffer;
381
382 error = smbd_smb2_request_done(smb2req, outbody, &outdyn);
383 if (!NT_STATUS_IS_OK(error)) {
384 smbd_server_connection_terminate(smb2req->sconn,
385 nt_errstr(error));
386 return;
387 }
388 }
389
390 struct smbd_smb2_create_state {
391 struct smbd_smb2_request *smb2req;
392 struct smb_request *smb1req;
393 struct timed_event *te;
394 struct tevent_immediate *im;
395 struct timeval request_time;
396 struct file_id id;
397 DATA_BLOB private_data;
398 uint8_t out_oplock_level;
399 uint32_t out_create_action;
400 NTTIME out_creation_time;
401 NTTIME out_last_access_time;
402 NTTIME out_last_write_time;
403 NTTIME out_change_time;
404 uint64_t out_allocation_size;
405 uint64_t out_end_of_file;
406 uint32_t out_file_attributes;
407 uint64_t out_file_id_persistent;
408 uint64_t out_file_id_volatile;
409 struct smb2_create_blobs out_context_blobs;
410 };
411
412 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
413 struct tevent_context *ev,
414 struct smbd_smb2_request *smb2req,
415 uint8_t in_oplock_level,
416 uint32_t in_impersonation_level,
417 uint32_t in_desired_access,
418 uint32_t in_file_attributes,
419 uint32_t in_share_access,
420 uint32_t in_create_disposition,
421 uint32_t in_create_options,
422 const char *in_name,
423 struct smb2_create_blobs in_context_blobs)
424 {
425 struct tevent_req *req = NULL;
426 struct smbd_smb2_create_state *state = NULL;
427 NTSTATUS status;
428 struct smb_request *smb1req = NULL;
429 files_struct *result = NULL;
430 int info;
431 struct timespec write_time_ts;
432 struct smb2_create_blobs out_context_blobs;
433 int requested_oplock_level;
434 struct smb2_create_blob *dhnc = NULL;
435
436 ZERO_STRUCT(out_context_blobs);
437
438 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
439 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
440 } else {
441 requested_oplock_level = in_oplock_level;
442 }
443
444
445 if (smb2req->subreq == NULL) {
446 /* New create call. */
447 req = tevent_req_create(mem_ctx, &state,
448 struct smbd_smb2_create_state);
449 if (req == NULL) {
450 return NULL;
451 }
452 state->smb2req = smb2req;
453
454 smb1req = smbd_smb2_fake_smb_request(smb2req);
455 if (tevent_req_nomem(smb1req, req)) {
456 return tevent_req_post(req, ev);
457 }
458 state->smb1req = smb1req;
459 smb2req->subreq = req;
460 DEBUG(10,("smbd_smb2_create: name[%s]\n",
461 in_name));
462 } else {
463 /* Re-entrant create call. */
464 req = smb2req->subreq;
465 state = tevent_req_data(req,
466 struct smbd_smb2_create_state);
467 smb1req = state->smb1req;
468 DEBUG(10,("smbd_smb2_create_send: reentrant for file %s\n",
469 in_name ));
470 }
471
472 dhnc = smb2_create_blob_find(&in_context_blobs,
473 SMB2_CREATE_TAG_DHNC);
474
475 if (dhnc) {
476 if (dhnc->data.length != 16) {
477 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
478 return tevent_req_post(req, ev);
479 }
480 /* we don't support durable handles yet */
481 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
482 return tevent_req_post(req, ev);
483 }
484
485 if (IS_IPC(smb1req->conn)) {
486 const char *pipe_name = in_name;
487
488 if (!lp_nt_pipe_support()) {
489 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
490 return tevent_req_post(req, ev);
491 }
492
493 status = open_np_file(smb1req, pipe_name, &result);
494 if (!NT_STATUS_IS_OK(status)) {
495 tevent_req_nterror(req, status);
496 return tevent_req_post(req, ev);
497 }
498 info = FILE_WAS_OPENED;
499 } else if (CAN_PRINT(smb1req->conn)) {
500 status = file_new(smb1req, smb1req->conn, &result);
501 if(!NT_STATUS_IS_OK(status)) {
502 tevent_req_nterror(req, status);
503 return tevent_req_post(req, ev);
504 }
505
506 status = print_spool_open(result, in_name,
507 smb1req->vuid);
508 if (!NT_STATUS_IS_OK(status)) {
509 file_free(smb1req, result);
510 tevent_req_nterror(req, status);
511 return tevent_req_post(req, ev);
512 }
513 info = FILE_WAS_CREATED;
514 } else {
515 char *fname;
516 struct smb_filename *smb_fname = NULL;
517 struct smb2_create_blob *exta = NULL;
518 struct ea_list *ea_list = NULL;
519 struct smb2_create_blob *mxac = NULL;
520 NTTIME max_access_time = 0;
521 struct smb2_create_blob *secd = NULL;
522 struct security_descriptor *sec_desc = NULL;
523 struct smb2_create_blob *dhnq = NULL;
524 struct smb2_create_blob *alsi = NULL;
525 uint64_t allocation_size = 0;
526 struct smb2_create_blob *twrp = NULL;
527 struct smb2_create_blob *qfid = NULL;
528
529 exta = smb2_create_blob_find(&in_context_blobs,
530 SMB2_CREATE_TAG_EXTA);
531 mxac = smb2_create_blob_find(&in_context_blobs,
532 SMB2_CREATE_TAG_MXAC);
533 secd = smb2_create_blob_find(&in_context_blobs,
534 SMB2_CREATE_TAG_SECD);
535 dhnq = smb2_create_blob_find(&in_context_blobs,
536 SMB2_CREATE_TAG_DHNQ);
537 alsi = smb2_create_blob_find(&in_context_blobs,
538 SMB2_CREATE_TAG_ALSI);
539 twrp = smb2_create_blob_find(&in_context_blobs,
540 SMB2_CREATE_TAG_TWRP);
541 qfid = smb2_create_blob_find(&in_context_blobs,
542 SMB2_CREATE_TAG_QFID);
543
544 fname = talloc_strdup(state, in_name);
545 if (tevent_req_nomem(fname, req)) {
546 return tevent_req_post(req, ev);
547 }
548
549 if (exta) {
550 ea_list = read_nttrans_ea_list(mem_ctx,
551 (const char *)exta->data.data, exta->data.length);
552 if (!ea_list) {
553 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
554 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
555 return tevent_req_post(req, ev);
556 }
557 }
558
559 if (mxac) {
560 if (mxac->data.length == 0) {
561 max_access_time = 0;
562 } else if (mxac->data.length == 8) {
563 max_access_time = BVAL(mxac->data.data, 0);
564 } else {
565 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
566 return tevent_req_post(req, ev);
567 }
568 }
569
570 if (secd) {
571 enum ndr_err_code ndr_err;
572
573 sec_desc = talloc_zero(state, struct security_descriptor);
574 if (tevent_req_nomem(sec_desc, req)) {
575 return tevent_req_post(req, ev);
576 }
577
578 ndr_err = ndr_pull_struct_blob(&secd->data,
579 sec_desc, sec_desc,
580 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
581 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
582 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
583 ndr_errstr(ndr_err)));
584 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
585 return tevent_req_post(req, ev);
586 }
587 }
588
589 if (dhnq) {
590 if (dhnq->data.length != 16) {
591 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
592 return tevent_req_post(req, ev);
593 }
594 /*
595 * we don't support durable handles yet
596 * and have to ignore this
597 */
598 }
599
600 if (alsi) {
601 if (alsi->data.length != 8) {
602 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
603 return tevent_req_post(req, ev);
604 }
605 allocation_size = BVAL(alsi->data.data, 0);
606 }
607
608 if (twrp) {
609 NTTIME nttime;
610 time_t t;
611 struct tm *tm;
612
613 if (twrp->data.length != 8) {
614 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
615 return tevent_req_post(req, ev);
616 }
617
618 nttime = BVAL(twrp->data.data, 0);
619 t = nt_time_to_unix(nttime);
620 tm = gmtime(&t);
621
622 TALLOC_FREE(fname);
623 fname = talloc_asprintf(state,
624 "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
625 tm->tm_year + 1900,
626 tm->tm_mon + 1,
627 tm->tm_mday,
628 tm->tm_hour,
629 tm->tm_min,
630 tm->tm_sec,
631 in_name);
632 if (tevent_req_nomem(fname, req)) {
633 return tevent_req_post(req, ev);
634 }
635 }
636
637 if (qfid) {
638 if (qfid->data.length != 0) {
639 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
640 return tevent_req_post(req, ev);
641 }
642 }
643
644 /* these are ignored for SMB2 */
645 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
646 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
647
648 /*
649 * For a DFS path the function parse_dfs_path()
650 * will do the path processing.
651 */
652
653 if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
654 /* convert '\\' into '/' */
655 status = check_path_syntax(fname);
656 if (!NT_STATUS_IS_OK(status)) {
657 tevent_req_nterror(req, status);
658 return tevent_req_post(req, ev);
659 }
660 }
661
662 status = filename_convert(req,
663 smb1req->conn,
664 smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
665 fname,
666 0, /* unix_convert flags */
667 NULL, /* ppath_contains_wcards */
668 &smb_fname);
669 if (!NT_STATUS_IS_OK(status)) {
670 tevent_req_nterror(req, status);
671 return tevent_req_post(req, ev);
672 }
673
674 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
675
676 status = SMB_VFS_CREATE_FILE(smb1req->conn,
677 smb1req,
678 0, /* root_dir_fid */
679 smb_fname,
680 in_desired_access,
681 in_share_access,
682 in_create_disposition,
683 in_create_options,
684 in_file_attributes,
685 map_smb2_oplock_levels_to_samba(requested_oplock_level),
686 allocation_size,
687 0, /* private_flags */
688 sec_desc,
689 ea_list,
690 &result,
691 &info);
692 if (!NT_STATUS_IS_OK(status)) {
693 if (open_was_deferred(smb1req->sconn, smb1req->mid)) {
694 return req;
695 }
696 tevent_req_nterror(req, status);
697 return tevent_req_post(req, ev);
698 }
699
700 if (mxac) {
701 NTTIME last_write_time;
702
703 unix_timespec_to_nt_time(&last_write_time,
704 result->fsp_name->st.st_ex_mtime);
705 if (last_write_time != max_access_time) {
706 uint8_t p[8];
707 uint32_t max_access_granted;
708 DATA_BLOB blob = data_blob_const(p, sizeof(p));
709
710 status = smbd_calculate_access_mask(smb1req->conn,
711 result->fsp_name,
712 SEC_FLAG_MAXIMUM_ALLOWED,
713 &max_access_granted);
714
715 SIVAL(p, 0, NT_STATUS_V(status));
716 SIVAL(p, 4, max_access_granted);
717
718 status = smb2_create_blob_add(state,
719 &out_context_blobs,
720 SMB2_CREATE_TAG_MXAC,
721 blob);
722 if (!NT_STATUS_IS_OK(status)) {
723 tevent_req_nterror(req, status);
724 return tevent_req_post(req, ev);
725 }
726 }
727 }
728
729 if (qfid) {
730 uint8_t p[32];
731 uint64_t file_index = get_FileIndex(result->conn,
732 &result->fsp_name->st);
733 DATA_BLOB blob = data_blob_const(p, sizeof(p));
734
735 ZERO_STRUCT(p);
736
737 /* From conversations with Microsoft engineers at
738 the MS plugfest. The first 8 bytes are the "volume index"
739 == inode, the second 8 bytes are the "volume id",
740 == dev. This will be updated in the SMB2 doc. */
741 SBVAL(p, 0, file_index);
742 SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
743
744 status = smb2_create_blob_add(state, &out_context_blobs,
745 SMB2_CREATE_TAG_QFID,
746 blob);
747 if (!NT_STATUS_IS_OK(status)) {
748 tevent_req_nterror(req, status);
749 return tevent_req_post(req, ev);
750 }
751 }
752 }
753
754 smb2req->compat_chain_fsp = smb1req->chain_fsp;
755
756 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
757 state->out_oplock_level = in_oplock_level;
758 } else {
759 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
760 }
761
762 if ((in_create_disposition == FILE_SUPERSEDE)
763 && (info == FILE_WAS_OVERWRITTEN)) {
764 state->out_create_action = FILE_WAS_SUPERSEDED;
765 } else {
766 state->out_create_action = info;
767 }
768 state->out_file_attributes = dos_mode(result->conn,
769 result->fsp_name);
770 /* Deal with other possible opens having a modified
771 write time. JRA. */
772 ZERO_STRUCT(write_time_ts);
773 get_file_infos(result->file_id, 0, NULL, &write_time_ts);
774 if (!null_timespec(write_time_ts)) {
775 update_stat_ex_mtime(&result->fsp_name->st, write_time_ts);
776 }
777
778 unix_timespec_to_nt_time(&state->out_creation_time,
779 get_create_timespec(smb1req->conn, result,
780 result->fsp_name));
781 unix_timespec_to_nt_time(&state->out_last_access_time,
782 result->fsp_name->st.st_ex_atime);
783 unix_timespec_to_nt_time(&state->out_last_write_time,
784 result->fsp_name->st.st_ex_mtime);
785 unix_timespec_to_nt_time(&state->out_change_time,
786 get_change_timespec(smb1req->conn, result,
787 result->fsp_name));
788 state->out_allocation_size =
789 SMB_VFS_GET_ALLOC_SIZE(smb1req->conn, result,
790 &(result->fsp_name->st));
791 state->out_end_of_file = result->fsp_name->st.st_ex_size;
792 if (state->out_file_attributes == 0) {
793 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
794 }
795 state->out_file_id_persistent = result->op->global->open_persistent_id;
796 state->out_file_id_volatile = result->op->global->open_volatile_id;
797 state->out_context_blobs = out_context_blobs;
798
799 DEBUG(10,("smbd_smb2_create_send: %s - %s\n",
800 fsp_str_dbg(result), fsp_fnum_dbg(result)));
801
802 tevent_req_done(req);
803 return tevent_req_post(req, ev);
804 }
805
806 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
807 TALLOC_CTX *mem_ctx,
808 uint8_t *out_oplock_level,
809 uint32_t *out_create_action,
810 NTTIME *out_creation_time,
811 NTTIME *out_last_access_time,
812 NTTIME *out_last_write_time,
813 NTTIME *out_change_time,
814 uint64_t *out_allocation_size,
815 uint64_t *out_end_of_file,
816 uint32_t *out_file_attributes,
817 uint64_t *out_file_id_persistent,
818 uint64_t *out_file_id_volatile,
819 struct smb2_create_blobs *out_context_blobs)
820 {
821 NTSTATUS status;
822 struct smbd_smb2_create_state *state = tevent_req_data(req,
823 struct smbd_smb2_create_state);
824
825 if (tevent_req_is_nterror(req, &status)) {
826 tevent_req_received(req);
827 return status;
828 }
829
830 *out_oplock_level = state->out_oplock_level;
831 *out_create_action = state->out_create_action;
832 *out_creation_time = state->out_creation_time;
833 *out_last_access_time = state->out_last_access_time;
834 *out_last_write_time = state->out_last_write_time;
835 *out_change_time = state->out_change_time;
836 *out_allocation_size = state->out_allocation_size;
837 *out_end_of_file = state->out_end_of_file;
838 *out_file_attributes = state->out_file_attributes;
839 *out_file_id_persistent = state->out_file_id_persistent;
840 *out_file_id_volatile = state->out_file_id_volatile;
841 *out_context_blobs = state->out_context_blobs;
842
843 talloc_steal(mem_ctx, state->out_context_blobs.blobs);
844
845 tevent_req_received(req);
846 return NT_STATUS_OK;
847 }
848
849 /*********************************************************
850 Code for dealing with deferred opens.
851 *********************************************************/
852
853 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
854 struct timeval *p_request_time,
855 void **pp_state)
856 {
857 struct smbd_smb2_create_state *state = NULL;
858 struct tevent_req *req = NULL;
859
860 if (!smb2req) {
861 return false;
862 }
863 if (smb2req->async_te == NULL) {
864 return false;
865 }
866 req = smb2req->subreq;
867 if (!req) {
868 return false;
869 }
870 state = tevent_req_data(req, struct smbd_smb2_create_state);
871 if (!state) {
872 return false;
873 }
874 if (p_request_time) {
875 *p_request_time = state->request_time;
876 }
877 if (pp_state) {
878 *pp_state = (void *)state->private_data.data;
879 }
880 return true;
881 }
882
883 /*********************************************************
884 Re-process this call early - requested by message or
885 close.
886 *********************************************************/
887
888 static struct smbd_smb2_request *find_open_smb2req(
889 struct smbd_server_connection *sconn, uint64_t mid)
890 {
891 struct smbd_smb2_request *smb2req;
892
893 for (smb2req = sconn->smb2.requests; smb2req; smb2req = smb2req->next) {
894 uint64_t message_id;
895 if (smb2req->subreq == NULL) {
896 /* This message has been processed. */
897 continue;
898 }
899 if (!tevent_req_is_in_progress(smb2req->subreq)) {
900 /* This message has been processed. */
901 continue;
902 }
903 message_id = get_mid_from_smb2req(smb2req);
904 if (message_id == mid) {
905 return smb2req;
906 }
907 }
908 return NULL;
909 }
910
911 bool open_was_deferred_smb2(struct smbd_server_connection *sconn, uint64_t mid)
912 {
913 struct smbd_smb2_create_state *state = NULL;
914 struct smbd_smb2_request *smb2req;
915
916 smb2req = find_open_smb2req(sconn, mid);
917
918 if (!smb2req) {
919 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
920 (unsigned long long)mid));
921 return false;
922 }
923 if (!smb2req->subreq) {
924 return false;
925 }
926 if (!tevent_req_is_in_progress(smb2req->subreq)) {
927 return false;
928 }
929 state = tevent_req_data(smb2req->subreq,
930 struct smbd_smb2_create_state);
931 if (!state) {
932 return false;
933 }
934 /* It's not in progress if there's no timeout event. */
935 if (!state->te) {
936 return false;
937 }
938
939 DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
940 (unsigned long long)mid));
941
942 return true;
943 }
944
945 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
946 uint64_t mid)
947 {
948 struct smbd_smb2_create_state *state = NULL;
949
950 if (!smb2req->subreq) {
951 return;
952 }
953 if (!tevent_req_is_in_progress(smb2req->subreq)) {
954 return;
955 }
956 state = tevent_req_data(smb2req->subreq,
957 struct smbd_smb2_create_state);
958 if (!state) {
959 return;
960 }
961
962 DEBUG(10,("remove_deferred_open_message_smb2_internal: "
963 "mid %llu\n",
964 (unsigned long long)mid ));
965
966 /* Ensure we don't have any outstanding timer event. */
967 TALLOC_FREE(state->te);
968 /* Ensure we don't have any outstanding immediate event. */
969 TALLOC_FREE(state->im);
970 }
971
972 void remove_deferred_open_message_smb2(
973 struct smbd_server_connection *sconn, uint64_t mid)
974 {
975 struct smbd_smb2_request *smb2req;
976
977 smb2req = find_open_smb2req(sconn, mid);
978
979 if (!smb2req) {
980 DEBUG(10,("remove_deferred_open_message_smb2: "
981 "can't find mid %llu\n",
982 (unsigned long long)mid ));
983 return;
984 }
985 remove_deferred_open_message_smb2_internal(smb2req, mid);
986 }
987
988 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
989 struct tevent_immediate *im,
990 void *private_data)
991 {
992 struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
993 struct smbd_smb2_request);
994 struct smbd_server_connection *sconn = smb2req->sconn;
995 uint64_t mid = get_mid_from_smb2req(smb2req);
996 NTSTATUS status;
997
998 DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
999 "re-dispatching mid %llu\n",
1000 (unsigned long long)mid ));
1001
1002 status = smbd_smb2_request_dispatch(smb2req);
1003 if (!NT_STATUS_IS_OK(status)) {
1004 smbd_server_connection_terminate(sconn, nt_errstr(status));
1005 return;
1006 }
1007 }
1008
1009 bool schedule_deferred_open_message_smb2(
1010 struct smbd_server_connection *sconn, uint64_t mid)
1011 {
1012 struct smbd_smb2_create_state *state = NULL;
1013 struct smbd_smb2_request *smb2req;
1014
1015 smb2req = find_open_smb2req(sconn, mid);
1016
1017 if (!smb2req) {
1018 DEBUG(10,("schedule_deferred_open_message_smb2: "
1019 "can't find mid %llu\n",
1020 (unsigned long long)mid ));
1021 return false;
1022 }
1023 if (!smb2req->subreq) {
1024 return false;
1025 }
1026 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1027 return false;
1028 }
1029 state = tevent_req_data(smb2req->subreq,
1030 struct smbd_smb2_create_state);
1031 if (!state) {
1032 return false;
1033 }
1034
1035 /* Ensure we don't have any outstanding timer event. */
1036 TALLOC_FREE(state->te);
1037 /* Ensure we don't have any outstanding immediate event. */
1038 TALLOC_FREE(state->im);
1039
1040 /*
1041 * This is subtle. We must null out the callback
1042 * before rescheduling, else the first call to
1043 * tevent_req_nterror() causes the _receive()
1044 * function to be called, this causing tevent_req_post()
1045 * to crash.
1046 */
1047 tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1048
1049 state->im = tevent_create_immediate(smb2req);
1050 if (!state->im) {
1051 smbd_server_connection_terminate(smb2req->sconn,
1052 nt_errstr(NT_STATUS_NO_MEMORY));
1053 return false;
1054 }
1055
1056 DEBUG(10,("schedule_deferred_open_message_smb2: "
1057 "re-processing mid %llu\n",
1058 (unsigned long long)mid ));
1059
1060 tevent_schedule_immediate(state->im,
1061 smb2req->sconn->ev_ctx,
1062 smbd_smb2_create_request_dispatch_immediate,
1063 smb2req);
1064
1065 return true;
1066 }
1067
1068 /*********************************************************
1069 Re-process this call.
1070 *********************************************************/
1071
1072 static void smb2_deferred_open_timer(struct event_context *ev,
1073 struct timed_event *te,
1074 struct timeval _tval,
1075 void *private_data)
1076 {
1077 NTSTATUS status;
1078 struct smbd_smb2_create_state *state = NULL;
1079 struct smbd_smb2_request *smb2req = talloc_get_type(private_data,
1080 struct smbd_smb2_request);
1081
1082 DEBUG(10,("smb2_deferred_open_timer: [idx=%d], %s\n",
1083 smb2req->current_idx,
1084 tevent_req_default_print(smb2req->subreq, talloc_tos()) ));
1085
1086 state = tevent_req_data(smb2req->subreq,
1087 struct smbd_smb2_create_state);
1088 if (!state) {
1089 return;
1090 }
1091 /*
1092 * Null this out, don't talloc_free. It will
1093 * be talloc_free'd by the tevent library when
1094 * this returns.
1095 */
1096 state->te = NULL;
1097 /* Ensure we don't have any outstanding immediate event. */
1098 TALLOC_FREE(state->im);
1099
1100 /*
1101 * This is subtle. We must null out the callback
1102 * before rescheduling, else the first call to
1103 * tevent_req_nterror() causes the _receive()
1104 * function to be called, this causing tevent_req_post()
1105 * to crash.
1106 */
1107 tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1108
1109 status = smbd_smb2_request_dispatch(smb2req);
1110
1111 if (!NT_STATUS_IS_OK(status)) {
1112 smbd_server_connection_terminate(smb2req->sconn,
1113 nt_errstr(status));
1114 }
1115 }
1116
1117 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1118 {
1119 struct smbd_smb2_request *smb2req = NULL;
1120 struct smbd_smb2_create_state *state = tevent_req_data(req,
1121 struct smbd_smb2_create_state);
1122 uint64_t mid;
1123
1124 if (!state) {
1125 return false;
1126 }
1127
1128 if (!state->smb2req) {
1129 return false;
1130 }
1131
1132 smb2req = state->smb2req;
1133 mid = get_mid_from_smb2req(smb2req);
1134
1135 if (is_deferred_open_async(state->private_data.data)) {
1136 /* Can't cancel an async create. */
1137 return false;
1138 }
1139
1140 remove_deferred_open_entry(state->id, mid,
1141 messaging_server_id(smb2req->sconn->msg_ctx));
1142 remove_deferred_open_message_smb2_internal(smb2req, mid);
1143 smb2req->cancelled = true;
1144
1145 tevent_req_done(req);
1146 return true;
1147 }
1148
1149 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1150 struct timeval request_time,
1151 struct timeval timeout,
1152 struct file_id id,
1153 char *private_data,
1154 size_t priv_len)
1155 {
1156 struct tevent_req *req = NULL;
1157 struct smbd_smb2_create_state *state = NULL;
1158 struct timeval end_time;
1159
1160 if (!smb2req) {
1161 return false;
1162 }
1163 req = smb2req->subreq;
1164 if (!req) {
1165 return false;
1166 }
1167 state = tevent_req_data(req, struct smbd_smb2_create_state);
1168 if (!state) {
1169 return false;
1170 }
1171 state->id = id;
1172 state->request_time = request_time;
1173 state->private_data = data_blob_talloc(state, private_data,
1174 priv_len);
1175 if (!state->private_data.data) {
1176 return false;
1177 }
1178
1179 /* Re-schedule us to retry on timer expiry. */
1180 end_time = timeval_sum(&request_time, &timeout);
1181
1182 DEBUG(10,("push_deferred_open_message_smb2: "
1183 "timeout at %s\n",
1184 timeval_string(talloc_tos(),
1185 &end_time,
1186 true) ));
1187
1188 state->te = tevent_add_timer(smb2req->sconn->ev_ctx,
1189 state,
1190 end_time,
1191 smb2_deferred_open_timer,
1192 smb2req);
1193 if (!state->te) {
1194 return false;
1195 }
1196
1197 /* allow this request to be canceled */
1198 tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1199
1200 return true;
1201 }