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s4-drs: mark WERR_DS_DRA_BUSY as a non error in DsReplicaUpdateRefs
[Samba/gebeck_regimport.git] / source3 / smbd / smb2_create.c
blob6d7d4ac5dbff0fdc76b6cebb941cc96f5c61a716
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
30 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level)
31 {
32 switch(in_oplock_level) {
33 case SMB2_OPLOCK_LEVEL_NONE:
34 return NO_OPLOCK;
35 case SMB2_OPLOCK_LEVEL_II:
36 return LEVEL_II_OPLOCK;
37 case SMB2_OPLOCK_LEVEL_EXCLUSIVE:
38 return EXCLUSIVE_OPLOCK;
39 case SMB2_OPLOCK_LEVEL_BATCH:
40 return BATCH_OPLOCK;
41 case SMB2_OPLOCK_LEVEL_LEASE:
42 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
43 "LEASE_OPLOCK_REQUESTED\n"));
44 return NO_OPLOCK;
45 default:
46 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
47 "unknown level %u\n",
48 (unsigned int)in_oplock_level));
49 return NO_OPLOCK;
50 }
51 }
52
53 static uint8_t map_samba_oplock_levels_to_smb2(int oplock_type)
54 {
55 if (BATCH_OPLOCK_TYPE(oplock_type)) {
56 return SMB2_OPLOCK_LEVEL_BATCH;
57 } else if (EXCLUSIVE_OPLOCK_TYPE(oplock_type)) {
58 return SMB2_OPLOCK_LEVEL_EXCLUSIVE;
59 } else if (oplock_type == LEVEL_II_OPLOCK) {
60 /*
61 * Don't use LEVEL_II_OPLOCK_TYPE here as
62 * this also includes FAKE_LEVEL_II_OPLOCKs
63 * which are internal only.
64 */
65 return SMB2_OPLOCK_LEVEL_II;
66 } else {
67 return SMB2_OPLOCK_LEVEL_NONE;
68 }
69 }
70
71 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
72 struct tevent_context *ev,
73 struct smbd_smb2_request *smb2req,
74 uint8_t in_oplock_level,
75 uint32_t in_impersonation_level,
76 uint32_t in_desired_access,
77 uint32_t in_file_attributes,
78 uint32_t in_share_access,
79 uint32_t in_create_disposition,
80 uint32_t in_create_options,
81 const char *in_name,
82 struct smb2_create_blobs in_context_blobs);
83 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
84 TALLOC_CTX *mem_ctx,
85 uint8_t *out_oplock_level,
86 uint32_t *out_create_action,
87 NTTIME *out_creation_time,
88 NTTIME *out_last_access_time,
89 NTTIME *out_last_write_time,
90 NTTIME *out_change_time,
91 uint64_t *out_allocation_size,
92 uint64_t *out_end_of_file,
93 uint32_t *out_file_attributes,
94 uint64_t *out_file_id_persistent,
95 uint64_t *out_file_id_volatile,
96 struct smb2_create_blobs *out_context_blobs);
97
98 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq);
99 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *smb2req)
100 {
101 const uint8_t *inbody;
102 int i = smb2req->current_idx;
103 uint8_t in_oplock_level;
104 uint32_t in_impersonation_level;
105 uint32_t in_desired_access;
106 uint32_t in_file_attributes;
107 uint32_t in_share_access;
108 uint32_t in_create_disposition;
109 uint32_t in_create_options;
110 uint16_t in_name_offset;
111 uint16_t in_name_length;
112 DATA_BLOB in_name_buffer;
113 char *in_name_string;
114 size_t in_name_string_size;
115 uint32_t name_offset = 0;
116 uint32_t name_available_length = 0;
117 uint32_t in_context_offset;
118 uint32_t in_context_length;
119 DATA_BLOB in_context_buffer;
120 struct smb2_create_blobs in_context_blobs;
121 uint32_t context_offset = 0;
122 uint32_t context_available_length = 0;
123 uint32_t dyn_offset;
124 NTSTATUS status;
125 bool ok;
126 struct tevent_req *tsubreq;
127
128 status = smbd_smb2_request_verify_sizes(smb2req, 0x39);
129 if (!NT_STATUS_IS_OK(status)) {
130 return smbd_smb2_request_error(smb2req, status);
131 }
132 inbody = (const uint8_t *)smb2req->in.vector[i+1].iov_base;
133
134 in_oplock_level = CVAL(inbody, 0x03);
135 in_impersonation_level = IVAL(inbody, 0x04);
136 in_desired_access = IVAL(inbody, 0x18);
137 in_file_attributes = IVAL(inbody, 0x1C);
138 in_share_access = IVAL(inbody, 0x20);
139 in_create_disposition = IVAL(inbody, 0x24);
140 in_create_options = IVAL(inbody, 0x28);
141 in_name_offset = SVAL(inbody, 0x2C);
142 in_name_length = SVAL(inbody, 0x2E);
143 in_context_offset = IVAL(inbody, 0x30);
144 in_context_length = IVAL(inbody, 0x34);
145
146 /*
147 * First check if the dynamic name and context buffers
148 * are correctly specified.
149 *
150 * Note: That we don't check if the name and context buffers
151 * overlap
152 */
153
154 dyn_offset = SMB2_HDR_BODY + smb2req->in.vector[i+1].iov_len;
155
156 if (in_name_offset == 0 && in_name_length == 0) {
157 /* This is ok */
158 name_offset = 0;
159 } else if (in_name_offset < dyn_offset) {
160 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
161 } else {
162 name_offset = in_name_offset - dyn_offset;
163 }
164
165 if (name_offset > smb2req->in.vector[i+2].iov_len) {
166 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
167 }
168
169 name_available_length = smb2req->in.vector[i+2].iov_len - name_offset;
170
171 if (in_name_length > name_available_length) {
172 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
173 }
174
175 in_name_buffer.data = (uint8_t *)smb2req->in.vector[i+2].iov_base +
176 name_offset;
177 in_name_buffer.length = in_name_length;
178
179 if (in_context_offset == 0 && in_context_length == 0) {
180 /* This is ok */
181 context_offset = 0;
182 } else if (in_context_offset < dyn_offset) {
183 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
184 } else {
185 context_offset = in_context_offset - dyn_offset;
186 }
187
188 if (context_offset > smb2req->in.vector[i+2].iov_len) {
189 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
190 }
191
192 context_available_length = smb2req->in.vector[i+2].iov_len - context_offset;
193
194 if (in_context_length > context_available_length) {
195 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
196 }
197
198 in_context_buffer.data = (uint8_t *)smb2req->in.vector[i+2].iov_base +
199 context_offset;
200 in_context_buffer.length = in_context_length;
201
202 /*
203 * Now interpret the name and context buffers
204 */
205
206 ok = convert_string_talloc(smb2req, CH_UTF16, CH_UNIX,
207 in_name_buffer.data,
208 in_name_buffer.length,
209 &in_name_string,
210 &in_name_string_size);
211 if (!ok) {
212 return smbd_smb2_request_error(smb2req, NT_STATUS_ILLEGAL_CHARACTER);
213 }
214
215 if (in_name_buffer.length == 0) {
216 in_name_string_size = 0;
217 }
218
219 if (strlen(in_name_string) != in_name_string_size) {
220 return smbd_smb2_request_error(smb2req, NT_STATUS_OBJECT_NAME_INVALID);
221 }
222
223 ZERO_STRUCT(in_context_blobs);
224 status = smb2_create_blob_parse(smb2req, in_context_buffer, &in_context_blobs);
225 if (!NT_STATUS_IS_OK(status)) {
226 return smbd_smb2_request_error(smb2req, status);
227 }
228
229 tsubreq = smbd_smb2_create_send(smb2req,
230 smb2req->sconn->smb2.event_ctx,
231 smb2req,
232 in_oplock_level,
233 in_impersonation_level,
234 in_desired_access,
235 in_file_attributes,
236 in_share_access,
237 in_create_disposition,
238 in_create_options,
239 in_name_string,
240 in_context_blobs);
241 if (tsubreq == NULL) {
242 smb2req->subreq = NULL;
243 return smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
244 }
245 tevent_req_set_callback(tsubreq, smbd_smb2_request_create_done, smb2req);
246
247 /*
248 * For now we keep the logic that we do not send STATUS_PENDING
249 * for sharing violations, so we just wait 2 seconds.
250 *
251 * TODO: we need more tests for this.
252 */
253 return smbd_smb2_request_pending_queue(smb2req, tsubreq, 2000000);
254 }
255
256 static uint64_t get_mid_from_smb2req(struct smbd_smb2_request *smb2req)
257 {
258 uint8_t *reqhdr = (uint8_t *)smb2req->out.vector[smb2req->current_idx].iov_base;
259 return BVAL(reqhdr, SMB2_HDR_MESSAGE_ID);
260 }
261
262 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq)
263 {
264 struct smbd_smb2_request *smb2req = tevent_req_callback_data(tsubreq,
265 struct smbd_smb2_request);
266 int i = smb2req->current_idx;
267 uint8_t *outhdr;
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 outhdr = (uint8_t *)smb2req->out.vector[i].iov_base;
340
341 outbody = data_blob_talloc(smb2req->out.vector, NULL, 0x58);
342 if (outbody.data == NULL) {
343 error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
344 if (!NT_STATUS_IS_OK(error)) {
345 smbd_server_connection_terminate(smb2req->sconn,
346 nt_errstr(error));
347 return;
348 }
349 return;
350 }
351
352 SSVAL(outbody.data, 0x00, 0x58 + 1); /* struct size */
353 SCVAL(outbody.data, 0x02,
354 out_oplock_level); /* oplock level */
355 SCVAL(outbody.data, 0x03, 0); /* reserved */
356 SIVAL(outbody.data, 0x04,
357 out_create_action); /* create action */
358 SBVAL(outbody.data, 0x08,
359 out_creation_time); /* creation time */
360 SBVAL(outbody.data, 0x10,
361 out_last_access_time); /* last access time */
362 SBVAL(outbody.data, 0x18,
363 out_last_write_time); /* last write time */
364 SBVAL(outbody.data, 0x20,
365 out_change_time); /* change time */
366 SBVAL(outbody.data, 0x28,
367 out_allocation_size); /* allocation size */
368 SBVAL(outbody.data, 0x30,
369 out_end_of_file); /* end of file */
370 SIVAL(outbody.data, 0x38,
371 out_file_attributes); /* file attributes */
372 SIVAL(outbody.data, 0x3C, 0); /* reserved */
373 SBVAL(outbody.data, 0x40,
374 out_file_id_persistent); /* file id (persistent) */
375 SBVAL(outbody.data, 0x48,
376 out_file_id_volatile); /* file id (volatile) */
377 SIVAL(outbody.data, 0x50,
378 out_context_buffer_offset); /* create contexts offset */
379 SIVAL(outbody.data, 0x54,
380 out_context_buffer.length); /* create contexts length */
381
382 outdyn = out_context_buffer;
383
384 error = smbd_smb2_request_done(smb2req, outbody, &outdyn);
385 if (!NT_STATUS_IS_OK(error)) {
386 smbd_server_connection_terminate(smb2req->sconn,
387 nt_errstr(error));
388 return;
389 }
390 }
391
392 struct smbd_smb2_create_state {
393 struct smbd_smb2_request *smb2req;
394 struct smb_request *smb1req;
395 struct timed_event *te;
396 struct tevent_immediate *im;
397 struct timeval request_time;
398 struct file_id id;
399 DATA_BLOB private_data;
400 uint8_t out_oplock_level;
401 uint32_t out_create_action;
402 NTTIME out_creation_time;
403 NTTIME out_last_access_time;
404 NTTIME out_last_write_time;
405 NTTIME out_change_time;
406 uint64_t out_allocation_size;
407 uint64_t out_end_of_file;
408 uint32_t out_file_attributes;
409 uint64_t out_file_id_persistent;
410 uint64_t out_file_id_volatile;
411 struct smb2_create_blobs out_context_blobs;
412 };
413
414 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
415 struct tevent_context *ev,
416 struct smbd_smb2_request *smb2req,
417 uint8_t in_oplock_level,
418 uint32_t in_impersonation_level,
419 uint32_t in_desired_access,
420 uint32_t in_file_attributes,
421 uint32_t in_share_access,
422 uint32_t in_create_disposition,
423 uint32_t in_create_options,
424 const char *in_name,
425 struct smb2_create_blobs in_context_blobs)
426 {
427 struct tevent_req *req = NULL;
428 struct smbd_smb2_create_state *state = NULL;
429 NTSTATUS status;
430 struct smb_request *smb1req = NULL;
431 files_struct *result = NULL;
432 int info;
433 struct timespec write_time_ts;
434 struct smb2_create_blobs out_context_blobs;
435 int requested_oplock_level;
436
437 ZERO_STRUCT(out_context_blobs);
438
439 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat_conn))) {
440 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
441 } else {
442 requested_oplock_level = in_oplock_level;
443 }
444
445
446 if (smb2req->subreq == NULL) {
447 /* New create call. */
448 req = tevent_req_create(mem_ctx, &state,
449 struct smbd_smb2_create_state);
450 if (req == NULL) {
451 return NULL;
452 }
453 state->smb2req = smb2req;
454
455 smb1req = smbd_smb2_fake_smb_request(smb2req);
456 if (tevent_req_nomem(smb1req, req)) {
457 return tevent_req_post(req, ev);
458 }
459 state->smb1req = smb1req;
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 if (IS_IPC(smb1req->conn)) {
473 const char *pipe_name = in_name;
474
475 if (!lp_nt_pipe_support()) {
476 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
477 return tevent_req_post(req, ev);
478 }
479
480 /* Strip \\ off the name. */
481 if (pipe_name[0] == '\\') {
482 pipe_name++;
483 }
484
485 status = open_np_file(smb1req, pipe_name, &result);
486 if (!NT_STATUS_IS_OK(status)) {
487 tevent_req_nterror(req, status);
488 return tevent_req_post(req, ev);
489 }
490 info = FILE_WAS_OPENED;
491 } else if (CAN_PRINT(smb1req->conn)) {
492 status = file_new(smb1req, smb1req->conn, &result);
493 if(!NT_STATUS_IS_OK(status)) {
494 tevent_req_nterror(req, status);
495 return tevent_req_post(req, ev);
496 }
497
498 status = print_spool_open(result, in_name,
499 smb1req->vuid);
500 if (!NT_STATUS_IS_OK(status)) {
501 file_free(smb1req, result);
502 tevent_req_nterror(req, status);
503 return tevent_req_post(req, ev);
504 }
505 info = FILE_WAS_CREATED;
506 } else {
507 char *fname;
508 struct smb_filename *smb_fname = NULL;
509 struct smb2_create_blob *exta = NULL;
510 struct ea_list *ea_list = NULL;
511 struct smb2_create_blob *mxac = NULL;
512 NTTIME max_access_time = 0;
513 struct smb2_create_blob *secd = NULL;
514 struct security_descriptor *sec_desc = NULL;
515 struct smb2_create_blob *dhnq = NULL;
516 struct smb2_create_blob *dhnc = NULL;
517 struct smb2_create_blob *alsi = NULL;
518 uint64_t allocation_size = 0;
519 struct smb2_create_blob *twrp = NULL;
520 struct smb2_create_blob *qfid = NULL;
521
522 exta = smb2_create_blob_find(&in_context_blobs,
523 SMB2_CREATE_TAG_EXTA);
524 mxac = smb2_create_blob_find(&in_context_blobs,
525 SMB2_CREATE_TAG_MXAC);
526 secd = smb2_create_blob_find(&in_context_blobs,
527 SMB2_CREATE_TAG_SECD);
528 dhnq = smb2_create_blob_find(&in_context_blobs,
529 SMB2_CREATE_TAG_DHNQ);
530 dhnc = smb2_create_blob_find(&in_context_blobs,
531 SMB2_CREATE_TAG_DHNC);
532 alsi = smb2_create_blob_find(&in_context_blobs,
533 SMB2_CREATE_TAG_ALSI);
534 twrp = smb2_create_blob_find(&in_context_blobs,
535 SMB2_CREATE_TAG_TWRP);
536 qfid = smb2_create_blob_find(&in_context_blobs,
537 SMB2_CREATE_TAG_QFID);
538
539 fname = talloc_strdup(state, in_name);
540 if (tevent_req_nomem(fname, req)) {
541 return tevent_req_post(req, ev);
542 }
543
544 if (exta) {
545 if (dhnc) {
546 tevent_req_nterror(req,NT_STATUS_OBJECT_NAME_NOT_FOUND);
547 return tevent_req_post(req, ev);
548 }
549
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 (dhnc) {
561 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
562 return tevent_req_post(req, ev);
563 }
564
565 if (mxac->data.length == 0) {
566 max_access_time = 0;
567 } else if (mxac->data.length == 8) {
568 max_access_time = BVAL(mxac->data.data, 0);
569 } else {
570 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
571 return tevent_req_post(req, ev);
572 }
573 }
574
575 if (secd) {
576 enum ndr_err_code ndr_err;
577
578 if (dhnc) {
579 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
580 return tevent_req_post(req, ev);
581 }
582
583 sec_desc = talloc_zero(state, struct security_descriptor);
584 if (tevent_req_nomem(sec_desc, req)) {
585 return tevent_req_post(req, ev);
586 }
587
588 ndr_err = ndr_pull_struct_blob(&secd->data,
589 sec_desc, sec_desc,
590 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
591 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
592 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
593 ndr_errstr(ndr_err)));
594 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
595 return tevent_req_post(req, ev);
596 }
597 }
598
599 if (dhnq) {
600 if (dhnc) {
601 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
602 return tevent_req_post(req, ev);
603 }
604
605 if (dhnq->data.length != 16) {
606 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
607 return tevent_req_post(req, ev);
608 }
609 /*
610 * we don't support durable handles yet
611 * and have to ignore this
612 */
613 }
614
615 if (dhnc) {
616 if (dhnc->data.length != 16) {
617 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
618 return tevent_req_post(req, ev);
619 }
620 /* we don't support durable handles yet */
621 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
622 return tevent_req_post(req, ev);
623 }
624
625 if (alsi) {
626 if (dhnc) {
627 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
628 return tevent_req_post(req, ev);
629 }
630
631 if (alsi->data.length != 8) {
632 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
633 return tevent_req_post(req, ev);
634 }
635 allocation_size = BVAL(alsi->data.data, 0);
636 }
637
638 if (twrp) {
639 NTTIME nttime;
640 time_t t;
641 struct tm *tm;
642
643 if (dhnc) {
644 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
645 return tevent_req_post(req, ev);
646 }
647
648 if (twrp->data.length != 8) {
649 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
650 return tevent_req_post(req, ev);
651 }
652
653 nttime = BVAL(twrp->data.data, 0);
654 t = nt_time_to_unix(nttime);
655 tm = gmtime(&t);
656
657 TALLOC_FREE(fname);
658 fname = talloc_asprintf(state,
659 "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
660 tm->tm_year + 1900,
661 tm->tm_mon + 1,
662 tm->tm_mday,
663 tm->tm_hour,
664 tm->tm_min,
665 tm->tm_sec,
666 in_name);
667 if (tevent_req_nomem(fname, req)) {
668 return tevent_req_post(req, ev);
669 }
670 }
671
672 if (qfid) {
673 if (qfid->data.length != 0) {
674 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
675 return tevent_req_post(req, ev);
676 }
677 }
678
679 /* these are ignored for SMB2 */
680 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
681 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
682
683 /*
684 * For a DFS path the function parse_dfs_path()
685 * will do the path processing.
686 */
687
688 if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
689 /* convert '\\' into '/' */
690 status = check_path_syntax(fname);
691 if (!NT_STATUS_IS_OK(status)) {
692 tevent_req_nterror(req, status);
693 return tevent_req_post(req, ev);
694 }
695 }
696
697 status = filename_convert(req,
698 smb1req->conn,
699 smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
700 fname,
701 0,
702 NULL,
703 &smb_fname);
704 if (!NT_STATUS_IS_OK(status)) {
705 tevent_req_nterror(req, status);
706 return tevent_req_post(req, ev);
707 }
708
709 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
710
711 status = SMB_VFS_CREATE_FILE(smb1req->conn,
712 smb1req,
713 0, /* root_dir_fid */
714 smb_fname,
715 in_desired_access,
716 in_share_access,
717 in_create_disposition,
718 in_create_options,
719 in_file_attributes,
720 map_smb2_oplock_levels_to_samba(requested_oplock_level),
721 allocation_size,
722 0, /* private_flags */
723 sec_desc,
724 ea_list,
725 &result,
726 &info);
727 if (!NT_STATUS_IS_OK(status)) {
728 if (open_was_deferred(smb1req->sconn, smb1req->mid)) {
729 return req;
730 }
731 tevent_req_nterror(req, status);
732 return tevent_req_post(req, ev);
733 }
734
735 if (mxac) {
736 NTTIME last_write_time;
737
738 unix_timespec_to_nt_time(&last_write_time,
739 result->fsp_name->st.st_ex_mtime);
740 if (last_write_time != max_access_time) {
741 uint8_t p[8];
742 uint32_t max_access_granted;
743 DATA_BLOB blob = data_blob_const(p, sizeof(p));
744
745 status = smbd_calculate_access_mask(smb1req->conn,
746 result->fsp_name,
747 /*
748 * at this stage
749 * it exists
750 */
751 true,
752 SEC_FLAG_MAXIMUM_ALLOWED,
753 &max_access_granted);
754
755 SIVAL(p, 0, NT_STATUS_V(status));
756 SIVAL(p, 4, max_access_granted);
757
758 status = smb2_create_blob_add(state,
759 &out_context_blobs,
760 SMB2_CREATE_TAG_MXAC,
761 blob);
762 if (!NT_STATUS_IS_OK(status)) {
763 tevent_req_nterror(req, status);
764 return tevent_req_post(req, ev);
765 }
766 }
767 }
768
769 if (qfid) {
770 uint8_t p[32];
771 uint64_t file_index = get_FileIndex(result->conn,
772 &result->fsp_name->st);
773 DATA_BLOB blob = data_blob_const(p, sizeof(p));
774
775 ZERO_STRUCT(p);
776
777 /* From conversations with Microsoft engineers at
778 the MS plugfest. The first 8 bytes are the "volume index"
779 == inode, the second 8 bytes are the "volume id",
780 == dev. This will be updated in the SMB2 doc. */
781 SBVAL(p, 0, file_index);
782 SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
783
784 status = smb2_create_blob_add(state, &out_context_blobs,
785 SMB2_CREATE_TAG_QFID,
786 blob);
787 if (!NT_STATUS_IS_OK(status)) {
788 tevent_req_nterror(req, status);
789 return tevent_req_post(req, ev);
790 }
791 }
792 }
793
794 smb2req->compat_chain_fsp = smb1req->chain_fsp;
795
796 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat_conn))) {
797 state->out_oplock_level = in_oplock_level;
798 } else {
799 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
800 }
801
802 if ((in_create_disposition == FILE_SUPERSEDE)
803 && (info == FILE_WAS_OVERWRITTEN)) {
804 state->out_create_action = FILE_WAS_SUPERSEDED;
805 } else {
806 state->out_create_action = info;
807 }
808 state->out_file_attributes = dos_mode(result->conn,
809 result->fsp_name);
810 /* Deal with other possible opens having a modified
811 write time. JRA. */
812 ZERO_STRUCT(write_time_ts);
813 get_file_infos(result->file_id, 0, NULL, &write_time_ts);
814 if (!null_timespec(write_time_ts)) {
815 update_stat_ex_mtime(&result->fsp_name->st, write_time_ts);
816 }
817
818 unix_timespec_to_nt_time(&state->out_creation_time,
819 get_create_timespec(smb1req->conn, result,
820 result->fsp_name));
821 unix_timespec_to_nt_time(&state->out_last_access_time,
822 result->fsp_name->st.st_ex_atime);
823 unix_timespec_to_nt_time(&state->out_last_write_time,
824 result->fsp_name->st.st_ex_mtime);
825 unix_timespec_to_nt_time(&state->out_change_time,
826 get_change_timespec(smb1req->conn, result,
827 result->fsp_name));
828 state->out_allocation_size =
829 SMB_VFS_GET_ALLOC_SIZE(smb1req->conn, result,
830 &(result->fsp_name->st));
831 state->out_end_of_file = result->fsp_name->st.st_ex_size;
832 if (state->out_file_attributes == 0) {
833 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
834 }
835 state->out_file_id_persistent = result->fnum;
836 state->out_file_id_volatile = result->fnum;
837 state->out_context_blobs = out_context_blobs;
838
839 tevent_req_done(req);
840 return tevent_req_post(req, ev);
841 }
842
843 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
844 TALLOC_CTX *mem_ctx,
845 uint8_t *out_oplock_level,
846 uint32_t *out_create_action,
847 NTTIME *out_creation_time,
848 NTTIME *out_last_access_time,
849 NTTIME *out_last_write_time,
850 NTTIME *out_change_time,
851 uint64_t *out_allocation_size,
852 uint64_t *out_end_of_file,
853 uint32_t *out_file_attributes,
854 uint64_t *out_file_id_persistent,
855 uint64_t *out_file_id_volatile,
856 struct smb2_create_blobs *out_context_blobs)
857 {
858 NTSTATUS status;
859 struct smbd_smb2_create_state *state = tevent_req_data(req,
860 struct smbd_smb2_create_state);
861
862 if (tevent_req_is_nterror(req, &status)) {
863 tevent_req_received(req);
864 return status;
865 }
866
867 *out_oplock_level = state->out_oplock_level;
868 *out_create_action = state->out_create_action;
869 *out_creation_time = state->out_creation_time;
870 *out_last_access_time = state->out_last_access_time;
871 *out_last_write_time = state->out_last_write_time;
872 *out_change_time = state->out_change_time;
873 *out_allocation_size = state->out_allocation_size;
874 *out_end_of_file = state->out_end_of_file;
875 *out_file_attributes = state->out_file_attributes;
876 *out_file_id_persistent = state->out_file_id_persistent;
877 *out_file_id_volatile = state->out_file_id_volatile;
878 *out_context_blobs = state->out_context_blobs;
879
880 talloc_steal(mem_ctx, state->out_context_blobs.blobs);
881
882 tevent_req_received(req);
883 return NT_STATUS_OK;
884 }
885
886 /*********************************************************
887 Code for dealing with deferred opens.
888 *********************************************************/
889
890 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
891 struct timeval *p_request_time,
892 void **pp_state)
893 {
894 struct smbd_smb2_create_state *state = NULL;
895 struct tevent_req *req = NULL;
896
897 if (!smb2req) {
898 return false;
899 }
900 if (smb2req->subreq == NULL) {
901 return false;
902 }
903 req = smb2req->subreq;
904 if (!req) {
905 return false;
906 }
907 state = tevent_req_data(req, struct smbd_smb2_create_state);
908 if (!state) {
909 return false;
910 }
911 if (p_request_time) {
912 *p_request_time = state->request_time;
913 }
914 if (pp_state) {
915 *pp_state = (void *)state->private_data.data;
916 }
917 return true;
918 }
919
920 /*********************************************************
921 Re-process this call early - requested by message or
922 close.
923 *********************************************************/
924
925 static struct smbd_smb2_request *find_open_smb2req(
926 struct smbd_server_connection *sconn, uint64_t mid)
927 {
928 struct smbd_smb2_request *smb2req;
929
930 for (smb2req = sconn->smb2.requests; smb2req; smb2req = smb2req->next) {
931 uint64_t message_id;
932 if (smb2req->subreq == NULL) {
933 /* This message has been processed. */
934 continue;
935 }
936 if (!tevent_req_is_in_progress(smb2req->subreq)) {
937 /* This message has been processed. */
938 continue;
939 }
940 message_id = get_mid_from_smb2req(smb2req);
941 if (message_id == mid) {
942 return smb2req;
943 }
944 }
945 return NULL;
946 }
947
948 bool open_was_deferred_smb2(struct smbd_server_connection *sconn, uint64_t mid)
949 {
950 struct smbd_smb2_create_state *state = NULL;
951 struct smbd_smb2_request *smb2req;
952
953 smb2req = find_open_smb2req(sconn, mid);
954
955 if (!smb2req) {
956 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
957 (unsigned long long)mid));
958 return false;
959 }
960 if (!smb2req->subreq) {
961 return false;
962 }
963 if (!tevent_req_is_in_progress(smb2req->subreq)) {
964 return false;
965 }
966 state = tevent_req_data(smb2req->subreq,
967 struct smbd_smb2_create_state);
968 if (!state) {
969 return false;
970 }
971 /* It's not in progress if there's no timeout event. */
972 if (!state->te) {
973 return false;
974 }
975
976 DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
977 (unsigned long long)mid));
978
979 return true;
980 }
981
982 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
983 uint64_t mid)
984 {
985 struct smbd_smb2_create_state *state = NULL;
986
987 if (!smb2req->subreq) {
988 return;
989 }
990 if (!tevent_req_is_in_progress(smb2req->subreq)) {
991 return;
992 }
993 state = tevent_req_data(smb2req->subreq,
994 struct smbd_smb2_create_state);
995 if (!state) {
996 return;
997 }
998
999 DEBUG(10,("remove_deferred_open_message_smb2_internal: "
1000 "mid %llu\n",
1001 (unsigned long long)mid ));
1002
1003 /* Ensure we don't have any outstanding timer event. */
1004 TALLOC_FREE(state->te);
1005 /* Ensure we don't have any outstanding immediate event. */
1006 TALLOC_FREE(state->im);
1007 }
1008
1009 void remove_deferred_open_message_smb2(
1010 struct smbd_server_connection *sconn, uint64_t mid)
1011 {
1012 struct smbd_smb2_request *smb2req;
1013
1014 smb2req = find_open_smb2req(sconn, mid);
1015
1016 if (!smb2req) {
1017 DEBUG(10,("remove_deferred_open_message_smb2: "
1018 "can't find mid %llu\n",
1019 (unsigned long long)mid ));
1020 return;
1021 }
1022 remove_deferred_open_message_smb2_internal(smb2req, mid);
1023 }
1024
1025 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1026 struct tevent_immediate *im,
1027 void *private_data)
1028 {
1029 struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1030 struct smbd_smb2_request);
1031 struct smbd_server_connection *sconn = smb2req->sconn;
1032 uint64_t mid = get_mid_from_smb2req(smb2req);
1033 NTSTATUS status;
1034
1035 DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1036 "re-dispatching mid %llu\n",
1037 (unsigned long long)mid ));
1038
1039 status = smbd_smb2_request_dispatch(smb2req);
1040 if (!NT_STATUS_IS_OK(status)) {
1041 smbd_server_connection_terminate(sconn, nt_errstr(status));
1042 return;
1043 }
1044 }
1045
1046 void schedule_deferred_open_message_smb2(
1047 struct smbd_server_connection *sconn, uint64_t mid)
1048 {
1049 struct smbd_smb2_create_state *state = NULL;
1050 struct smbd_smb2_request *smb2req;
1051
1052 smb2req = find_open_smb2req(sconn, mid);
1053
1054 if (!smb2req) {
1055 DEBUG(10,("schedule_deferred_open_message_smb2: "
1056 "can't find mid %llu\n",
1057 (unsigned long long)mid ));
1058 return;
1059 }
1060 if (!smb2req->subreq) {
1061 return;
1062 }
1063 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1064 return;
1065 }
1066 state = tevent_req_data(smb2req->subreq,
1067 struct smbd_smb2_create_state);
1068 if (!state) {
1069 return;
1070 }
1071
1072 /* Ensure we don't have any outstanding timer event. */
1073 TALLOC_FREE(state->te);
1074 /* Ensure we don't have any outstanding immediate event. */
1075 TALLOC_FREE(state->im);
1076
1077 /*
1078 * This is subtle. We must null out the callback
1079 * before resheduling, else the first call to
1080 * tevent_req_nterror() causes the _receive()
1081 * function to be called, this causing tevent_req_post()
1082 * to crash.
1083 */
1084 tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1085
1086 state->im = tevent_create_immediate(smb2req);
1087 if (!state->im) {
1088 smbd_server_connection_terminate(smb2req->sconn,
1089 nt_errstr(NT_STATUS_NO_MEMORY));
1090 return;
1091 }
1092
1093 DEBUG(10,("schedule_deferred_open_message_smb2: "
1094 "re-processing mid %llu\n",
1095 (unsigned long long)mid ));
1096
1097 tevent_schedule_immediate(state->im,
1098 smb2req->sconn->smb2.event_ctx,
1099 smbd_smb2_create_request_dispatch_immediate,
1100 smb2req);
1101 }
1102
1103 /*********************************************************
1104 Re-process this call.
1105 *********************************************************/
1106
1107 static void smb2_deferred_open_timer(struct event_context *ev,
1108 struct timed_event *te,
1109 struct timeval _tval,
1110 void *private_data)
1111 {
1112 NTSTATUS status;
1113 struct smbd_smb2_create_state *state = NULL;
1114 struct smbd_smb2_request *smb2req = talloc_get_type(private_data,
1115 struct smbd_smb2_request);
1116
1117 DEBUG(10,("smb2_deferred_open_timer: [idx=%d], %s\n",
1118 smb2req->current_idx,
1119 tevent_req_default_print(smb2req->subreq, talloc_tos()) ));
1120
1121 state = tevent_req_data(smb2req->subreq,
1122 struct smbd_smb2_create_state);
1123 if (!state) {
1124 return;
1125 }
1126 /*
1127 * Null this out, don't talloc_free. It will
1128 * be talloc_free'd by the tevent library when
1129 * this returns.
1130 */
1131 state->te = NULL;
1132 /* Ensure we don't have any outstanding immediate event. */
1133 TALLOC_FREE(state->im);
1134
1135 /*
1136 * This is subtle. We must null out the callback
1137 * before resheduling, else the first call to
1138 * tevent_req_nterror() causes the _receive()
1139 * function to be called, this causing tevent_req_post()
1140 * to crash.
1141 */
1142 tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1143
1144 status = smbd_smb2_request_dispatch(smb2req);
1145
1146 if (!NT_STATUS_IS_OK(status)) {
1147 smbd_server_connection_terminate(smb2req->sconn,
1148 nt_errstr(status));
1149 }
1150 }
1151
1152 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1153 {
1154 struct smbd_smb2_request *smb2req = NULL;
1155 struct smbd_smb2_create_state *state = tevent_req_data(req,
1156 struct smbd_smb2_create_state);
1157 uint64_t mid;
1158
1159 if (!state) {
1160 return false;
1161 }
1162
1163 if (!state->smb2req) {
1164 return false;
1165 }
1166
1167 smb2req = state->smb2req;
1168 mid = get_mid_from_smb2req(smb2req);
1169
1170 remove_deferred_open_entry(state->id, mid,
1171 sconn_server_id(smb2req->sconn));
1172 remove_deferred_open_message_smb2_internal(smb2req, mid);
1173 smb2req->cancelled = true;
1174
1175 tevent_req_done(req);
1176 return true;
1177 }
1178
1179 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1180 struct timeval request_time,
1181 struct timeval timeout,
1182 struct file_id id,
1183 char *private_data,
1184 size_t priv_len)
1185 {
1186 struct tevent_req *req = NULL;
1187 struct smbd_smb2_create_state *state = NULL;
1188 struct timeval end_time;
1189
1190 if (!smb2req) {
1191 return false;
1192 }
1193 req = smb2req->subreq;
1194 if (!req) {
1195 return false;
1196 }
1197 state = tevent_req_data(req, struct smbd_smb2_create_state);
1198 if (!state) {
1199 return false;
1200 }
1201 state->id = id;
1202 state->request_time = request_time;
1203 state->private_data = data_blob_talloc(state, private_data,
1204 priv_len);
1205 if (!state->private_data.data) {
1206 return false;
1207 }
1208
1209 /* Re-schedule us to retry on timer expiry. */
1210 end_time = timeval_sum(&request_time, &timeout);
1211
1212 DEBUG(10,("push_deferred_open_message_smb2: "
1213 "timeout at %s\n",
1214 timeval_string(talloc_tos(),
1215 &end_time,
1216 true) ));
1217
1218 state->te = event_add_timed(smb2req->sconn->smb2.event_ctx,
1219 state,
1220 end_time,
1221 smb2_deferred_open_timer,
1222 smb2req);
1223 if (!state->te) {
1224 return false;
1225 }
1226
1227 /* allow this request to be canceled */
1228 tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1229
1230 return true;
1231 }
reg import