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net: Let get*sid return error from passdb init
[Samba.git] / source3 / smbd / smb2_create.c
blob35be32823143595c07d59c444973b13890d2febe
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 int i = smb2req->current_idx;
105 uint8_t in_oplock_level;
106 uint32_t in_impersonation_level;
107 uint32_t in_desired_access;
108 uint32_t in_file_attributes;
109 uint32_t in_share_access;
110 uint32_t in_create_disposition;
111 uint32_t in_create_options;
112 uint16_t in_name_offset;
113 uint16_t in_name_length;
114 DATA_BLOB in_name_buffer;
115 char *in_name_string;
116 size_t in_name_string_size;
117 uint32_t name_offset = 0;
118 uint32_t name_available_length = 0;
119 uint32_t in_context_offset;
120 uint32_t in_context_length;
121 DATA_BLOB in_context_buffer;
122 struct smb2_create_blobs in_context_blobs;
123 uint32_t context_offset = 0;
124 uint32_t context_available_length = 0;
125 uint32_t dyn_offset;
126 NTSTATUS status;
127 bool ok;
128 struct tevent_req *tsubreq;
129
130 status = smbd_smb2_request_verify_sizes(smb2req, 0x39);
131 if (!NT_STATUS_IS_OK(status)) {
132 return smbd_smb2_request_error(smb2req, status);
133 }
134 inbody = (const uint8_t *)smb2req->in.vector[i+1].iov_base;
135
136 in_oplock_level = CVAL(inbody, 0x03);
137 in_impersonation_level = IVAL(inbody, 0x04);
138 in_desired_access = IVAL(inbody, 0x18);
139 in_file_attributes = IVAL(inbody, 0x1C);
140 in_share_access = IVAL(inbody, 0x20);
141 in_create_disposition = IVAL(inbody, 0x24);
142 in_create_options = IVAL(inbody, 0x28);
143 in_name_offset = SVAL(inbody, 0x2C);
144 in_name_length = SVAL(inbody, 0x2E);
145 in_context_offset = IVAL(inbody, 0x30);
146 in_context_length = IVAL(inbody, 0x34);
147
148 /*
149 * First check if the dynamic name and context buffers
150 * are correctly specified.
151 *
152 * Note: That we don't check if the name and context buffers
153 * overlap
154 */
155
156 dyn_offset = SMB2_HDR_BODY + smb2req->in.vector[i+1].iov_len;
157
158 if (in_name_offset == 0 && in_name_length == 0) {
159 /* This is ok */
160 name_offset = 0;
161 } else if (in_name_offset < dyn_offset) {
162 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
163 } else {
164 name_offset = in_name_offset - dyn_offset;
165 }
166
167 indyniov = &smb2req->in.vector[i+2];
168
169 if (name_offset > indyniov->iov_len) {
170 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
171 }
172
173 name_available_length = indyniov->iov_len - name_offset;
174
175 if (in_name_length > name_available_length) {
176 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
177 }
178
179 in_name_buffer.data = (uint8_t *)indyniov->iov_base + name_offset;
180 in_name_buffer.length = in_name_length;
181
182 if (in_context_offset == 0 && in_context_length == 0) {
183 /* This is ok */
184 context_offset = 0;
185 } else if (in_context_offset < dyn_offset) {
186 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
187 } else {
188 context_offset = in_context_offset - dyn_offset;
189 }
190
191 if (context_offset > indyniov->iov_len) {
192 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
193 }
194
195 context_available_length = indyniov->iov_len - context_offset;
196
197 if (in_context_length > context_available_length) {
198 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
199 }
200
201 in_context_buffer.data = (uint8_t *)indyniov->iov_base +
202 context_offset;
203 in_context_buffer.length = in_context_length;
204
205 /*
206 * Now interpret the name and context buffers
207 */
208
209 ok = convert_string_talloc(smb2req, CH_UTF16, CH_UNIX,
210 in_name_buffer.data,
211 in_name_buffer.length,
212 &in_name_string,
213 &in_name_string_size);
214 if (!ok) {
215 return smbd_smb2_request_error(smb2req, NT_STATUS_ILLEGAL_CHARACTER);
216 }
217
218 if (in_name_buffer.length == 0) {
219 in_name_string_size = 0;
220 }
221
222 if (strlen(in_name_string) != in_name_string_size) {
223 return smbd_smb2_request_error(smb2req, NT_STATUS_OBJECT_NAME_INVALID);
224 }
225
226 ZERO_STRUCT(in_context_blobs);
227 status = smb2_create_blob_parse(smb2req, in_context_buffer, &in_context_blobs);
228 if (!NT_STATUS_IS_OK(status)) {
229 return smbd_smb2_request_error(smb2req, status);
230 }
231
232 tsubreq = smbd_smb2_create_send(smb2req,
233 smb2req->sconn->ev_ctx,
234 smb2req,
235 in_oplock_level,
236 in_impersonation_level,
237 in_desired_access,
238 in_file_attributes,
239 in_share_access,
240 in_create_disposition,
241 in_create_options,
242 in_name_string,
243 in_context_blobs);
244 if (tsubreq == NULL) {
245 smb2req->subreq = NULL;
246 return smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
247 }
248 tevent_req_set_callback(tsubreq, smbd_smb2_request_create_done, smb2req);
249
250 /*
251 * For now we keep the logic that we do not send STATUS_PENDING
252 * for sharing violations, so we just wait 2 seconds.
253 *
254 * TODO: we need more tests for this.
255 */
256 return smbd_smb2_request_pending_queue(smb2req, tsubreq, 2000000);
257 }
258
259 static uint64_t get_mid_from_smb2req(struct smbd_smb2_request *smb2req)
260 {
261 uint8_t *reqhdr = (uint8_t *)smb2req->out.vector[smb2req->current_idx].iov_base;
262 return BVAL(reqhdr, SMB2_HDR_MESSAGE_ID);
263 }
264
265 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq)
266 {
267 struct smbd_smb2_request *smb2req = tevent_req_callback_data(tsubreq,
268 struct smbd_smb2_request);
269 DATA_BLOB outbody;
270 DATA_BLOB outdyn;
271 uint8_t out_oplock_level = 0;
272 uint32_t out_create_action = 0;
273 NTTIME out_creation_time = 0;
274 NTTIME out_last_access_time = 0;
275 NTTIME out_last_write_time = 0;
276 NTTIME out_change_time = 0;
277 uint64_t out_allocation_size = 0;
278 uint64_t out_end_of_file = 0;
279 uint32_t out_file_attributes = 0;
280 uint64_t out_file_id_persistent = 0;
281 uint64_t out_file_id_volatile = 0;
282 struct smb2_create_blobs out_context_blobs;
283 DATA_BLOB out_context_buffer;
284 uint16_t out_context_buffer_offset = 0;
285 NTSTATUS status;
286 NTSTATUS error; /* transport error */
287
288 if (smb2req->cancelled) {
289 uint64_t mid = get_mid_from_smb2req(smb2req);
290 DEBUG(10,("smbd_smb2_request_create_done: cancelled mid %llu\n",
291 (unsigned long long)mid ));
292 error = smbd_smb2_request_error(smb2req, NT_STATUS_CANCELLED);
293 if (!NT_STATUS_IS_OK(error)) {
294 smbd_server_connection_terminate(smb2req->sconn,
295 nt_errstr(error));
296 return;
297 }
298 return;
299 }
300
301 status = smbd_smb2_create_recv(tsubreq,
302 smb2req,
303 &out_oplock_level,
304 &out_create_action,
305 &out_creation_time,
306 &out_last_access_time,
307 &out_last_write_time,
308 &out_change_time,
309 &out_allocation_size,
310 &out_end_of_file,
311 &out_file_attributes,
312 &out_file_id_persistent,
313 &out_file_id_volatile,
314 &out_context_blobs);
315 if (!NT_STATUS_IS_OK(status)) {
316 error = smbd_smb2_request_error(smb2req, status);
317 if (!NT_STATUS_IS_OK(error)) {
318 smbd_server_connection_terminate(smb2req->sconn,
319 nt_errstr(error));
320 return;
321 }
322 return;
323 }
324
325 status = smb2_create_blob_push(smb2req, &out_context_buffer, out_context_blobs);
326 if (!NT_STATUS_IS_OK(status)) {
327 error = smbd_smb2_request_error(smb2req, status);
328 if (!NT_STATUS_IS_OK(error)) {
329 smbd_server_connection_terminate(smb2req->sconn,
330 nt_errstr(error));
331 return;
332 }
333 return;
334 }
335
336 if (out_context_buffer.length > 0) {
337 out_context_buffer_offset = SMB2_HDR_BODY + 0x58;
338 }
339
340 outbody = data_blob_talloc(smb2req->out.vector, NULL, 0x58);
341 if (outbody.data == NULL) {
342 error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
343 if (!NT_STATUS_IS_OK(error)) {
344 smbd_server_connection_terminate(smb2req->sconn,
345 nt_errstr(error));
346 return;
347 }
348 return;
349 }
350
351 SSVAL(outbody.data, 0x00, 0x58 + 1); /* struct size */
352 SCVAL(outbody.data, 0x02,
353 out_oplock_level); /* oplock level */
354 SCVAL(outbody.data, 0x03, 0); /* reserved */
355 SIVAL(outbody.data, 0x04,
356 out_create_action); /* create action */
357 SBVAL(outbody.data, 0x08,
358 out_creation_time); /* creation time */
359 SBVAL(outbody.data, 0x10,
360 out_last_access_time); /* last access time */
361 SBVAL(outbody.data, 0x18,
362 out_last_write_time); /* last write time */
363 SBVAL(outbody.data, 0x20,
364 out_change_time); /* change time */
365 SBVAL(outbody.data, 0x28,
366 out_allocation_size); /* allocation size */
367 SBVAL(outbody.data, 0x30,
368 out_end_of_file); /* end of file */
369 SIVAL(outbody.data, 0x38,
370 out_file_attributes); /* file attributes */
371 SIVAL(outbody.data, 0x3C, 0); /* reserved */
372 SBVAL(outbody.data, 0x40,
373 out_file_id_persistent); /* file id (persistent) */
374 SBVAL(outbody.data, 0x48,
375 out_file_id_volatile); /* file id (volatile) */
376 SIVAL(outbody.data, 0x50,
377 out_context_buffer_offset); /* create contexts offset */
378 SIVAL(outbody.data, 0x54,
379 out_context_buffer.length); /* create contexts length */
380
381 outdyn = out_context_buffer;
382
383 error = smbd_smb2_request_done(smb2req, outbody, &outdyn);
384 if (!NT_STATUS_IS_OK(error)) {
385 smbd_server_connection_terminate(smb2req->sconn,
386 nt_errstr(error));
387 return;
388 }
389 }
390
391 struct smbd_smb2_create_state {
392 struct smbd_smb2_request *smb2req;
393 struct smb_request *smb1req;
394 struct timed_event *te;
395 struct tevent_immediate *im;
396 struct timeval request_time;
397 struct file_id id;
398 DATA_BLOB private_data;
399 uint8_t out_oplock_level;
400 uint32_t out_create_action;
401 NTTIME out_creation_time;
402 NTTIME out_last_access_time;
403 NTTIME out_last_write_time;
404 NTTIME out_change_time;
405 uint64_t out_allocation_size;
406 uint64_t out_end_of_file;
407 uint32_t out_file_attributes;
408 uint64_t out_file_id_persistent;
409 uint64_t out_file_id_volatile;
410 struct smb2_create_blobs out_context_blobs;
411 };
412
413 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
414 struct tevent_context *ev,
415 struct smbd_smb2_request *smb2req,
416 uint8_t in_oplock_level,
417 uint32_t in_impersonation_level,
418 uint32_t in_desired_access,
419 uint32_t in_file_attributes,
420 uint32_t in_share_access,
421 uint32_t in_create_disposition,
422 uint32_t in_create_options,
423 const char *in_name,
424 struct smb2_create_blobs in_context_blobs)
425 {
426 struct tevent_req *req = NULL;
427 struct smbd_smb2_create_state *state = NULL;
428 NTSTATUS status;
429 struct smb_request *smb1req = NULL;
430 files_struct *result = NULL;
431 int info;
432 struct timespec write_time_ts;
433 struct smb2_create_blobs out_context_blobs;
434 int requested_oplock_level;
435
436 ZERO_STRUCT(out_context_blobs);
437
438 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat_conn))) {
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 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 SEC_FLAG_MAXIMUM_ALLOWED,
748 &max_access_granted);
749
750 SIVAL(p, 0, NT_STATUS_V(status));
751 SIVAL(p, 4, max_access_granted);
752
753 status = smb2_create_blob_add(state,
754 &out_context_blobs,
755 SMB2_CREATE_TAG_MXAC,
756 blob);
757 if (!NT_STATUS_IS_OK(status)) {
758 tevent_req_nterror(req, status);
759 return tevent_req_post(req, ev);
760 }
761 }
762 }
763
764 if (qfid) {
765 uint8_t p[32];
766 uint64_t file_index = get_FileIndex(result->conn,
767 &result->fsp_name->st);
768 DATA_BLOB blob = data_blob_const(p, sizeof(p));
769
770 ZERO_STRUCT(p);
771
772 /* From conversations with Microsoft engineers at
773 the MS plugfest. The first 8 bytes are the "volume index"
774 == inode, the second 8 bytes are the "volume id",
775 == dev. This will be updated in the SMB2 doc. */
776 SBVAL(p, 0, file_index);
777 SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
778
779 status = smb2_create_blob_add(state, &out_context_blobs,
780 SMB2_CREATE_TAG_QFID,
781 blob);
782 if (!NT_STATUS_IS_OK(status)) {
783 tevent_req_nterror(req, status);
784 return tevent_req_post(req, ev);
785 }
786 }
787 }
788
789 smb2req->compat_chain_fsp = smb1req->chain_fsp;
790
791 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat_conn))) {
792 state->out_oplock_level = in_oplock_level;
793 } else {
794 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
795 }
796
797 if ((in_create_disposition == FILE_SUPERSEDE)
798 && (info == FILE_WAS_OVERWRITTEN)) {
799 state->out_create_action = FILE_WAS_SUPERSEDED;
800 } else {
801 state->out_create_action = info;
802 }
803 state->out_file_attributes = dos_mode(result->conn,
804 result->fsp_name);
805 /* Deal with other possible opens having a modified
806 write time. JRA. */
807 ZERO_STRUCT(write_time_ts);
808 get_file_infos(result->file_id, 0, NULL, &write_time_ts);
809 if (!null_timespec(write_time_ts)) {
810 update_stat_ex_mtime(&result->fsp_name->st, write_time_ts);
811 }
812
813 unix_timespec_to_nt_time(&state->out_creation_time,
814 get_create_timespec(smb1req->conn, result,
815 result->fsp_name));
816 unix_timespec_to_nt_time(&state->out_last_access_time,
817 result->fsp_name->st.st_ex_atime);
818 unix_timespec_to_nt_time(&state->out_last_write_time,
819 result->fsp_name->st.st_ex_mtime);
820 unix_timespec_to_nt_time(&state->out_change_time,
821 get_change_timespec(smb1req->conn, result,
822 result->fsp_name));
823 state->out_allocation_size =
824 SMB_VFS_GET_ALLOC_SIZE(smb1req->conn, result,
825 &(result->fsp_name->st));
826 state->out_end_of_file = result->fsp_name->st.st_ex_size;
827 if (state->out_file_attributes == 0) {
828 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
829 }
830 state->out_file_id_persistent = result->fnum;
831 state->out_file_id_volatile = result->fnum;
832 state->out_context_blobs = out_context_blobs;
833
834 tevent_req_done(req);
835 return tevent_req_post(req, ev);
836 }
837
838 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
839 TALLOC_CTX *mem_ctx,
840 uint8_t *out_oplock_level,
841 uint32_t *out_create_action,
842 NTTIME *out_creation_time,
843 NTTIME *out_last_access_time,
844 NTTIME *out_last_write_time,
845 NTTIME *out_change_time,
846 uint64_t *out_allocation_size,
847 uint64_t *out_end_of_file,
848 uint32_t *out_file_attributes,
849 uint64_t *out_file_id_persistent,
850 uint64_t *out_file_id_volatile,
851 struct smb2_create_blobs *out_context_blobs)
852 {
853 NTSTATUS status;
854 struct smbd_smb2_create_state *state = tevent_req_data(req,
855 struct smbd_smb2_create_state);
856
857 if (tevent_req_is_nterror(req, &status)) {
858 tevent_req_received(req);
859 return status;
860 }
861
862 *out_oplock_level = state->out_oplock_level;
863 *out_create_action = state->out_create_action;
864 *out_creation_time = state->out_creation_time;
865 *out_last_access_time = state->out_last_access_time;
866 *out_last_write_time = state->out_last_write_time;
867 *out_change_time = state->out_change_time;
868 *out_allocation_size = state->out_allocation_size;
869 *out_end_of_file = state->out_end_of_file;
870 *out_file_attributes = state->out_file_attributes;
871 *out_file_id_persistent = state->out_file_id_persistent;
872 *out_file_id_volatile = state->out_file_id_volatile;
873 *out_context_blobs = state->out_context_blobs;
874
875 talloc_steal(mem_ctx, state->out_context_blobs.blobs);
876
877 tevent_req_received(req);
878 return NT_STATUS_OK;
879 }
880
881 /*********************************************************
882 Code for dealing with deferred opens.
883 *********************************************************/
884
885 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
886 struct timeval *p_request_time,
887 void **pp_state)
888 {
889 struct smbd_smb2_create_state *state = NULL;
890 struct tevent_req *req = NULL;
891
892 if (!smb2req) {
893 return false;
894 }
895 if (smb2req->async_te == NULL) {
896 return false;
897 }
898 req = smb2req->subreq;
899 if (!req) {
900 return false;
901 }
902 state = tevent_req_data(req, struct smbd_smb2_create_state);
903 if (!state) {
904 return false;
905 }
906 if (p_request_time) {
907 *p_request_time = state->request_time;
908 }
909 if (pp_state) {
910 *pp_state = (void *)state->private_data.data;
911 }
912 return true;
913 }
914
915 /*********************************************************
916 Re-process this call early - requested by message or
917 close.
918 *********************************************************/
919
920 static struct smbd_smb2_request *find_open_smb2req(
921 struct smbd_server_connection *sconn, uint64_t mid)
922 {
923 struct smbd_smb2_request *smb2req;
924
925 for (smb2req = sconn->smb2.requests; smb2req; smb2req = smb2req->next) {
926 uint64_t message_id;
927 if (smb2req->subreq == NULL) {
928 /* This message has been processed. */
929 continue;
930 }
931 if (!tevent_req_is_in_progress(smb2req->subreq)) {
932 /* This message has been processed. */
933 continue;
934 }
935 message_id = get_mid_from_smb2req(smb2req);
936 if (message_id == mid) {
937 return smb2req;
938 }
939 }
940 return NULL;
941 }
942
943 bool open_was_deferred_smb2(struct smbd_server_connection *sconn, uint64_t mid)
944 {
945 struct smbd_smb2_create_state *state = NULL;
946 struct smbd_smb2_request *smb2req;
947
948 smb2req = find_open_smb2req(sconn, mid);
949
950 if (!smb2req) {
951 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
952 (unsigned long long)mid));
953 return false;
954 }
955 if (!smb2req->subreq) {
956 return false;
957 }
958 if (!tevent_req_is_in_progress(smb2req->subreq)) {
959 return false;
960 }
961 state = tevent_req_data(smb2req->subreq,
962 struct smbd_smb2_create_state);
963 if (!state) {
964 return false;
965 }
966 /* It's not in progress if there's no timeout event. */
967 if (!state->te) {
968 return false;
969 }
970
971 DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
972 (unsigned long long)mid));
973
974 return true;
975 }
976
977 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
978 uint64_t mid)
979 {
980 struct smbd_smb2_create_state *state = NULL;
981
982 if (!smb2req->subreq) {
983 return;
984 }
985 if (!tevent_req_is_in_progress(smb2req->subreq)) {
986 return;
987 }
988 state = tevent_req_data(smb2req->subreq,
989 struct smbd_smb2_create_state);
990 if (!state) {
991 return;
992 }
993
994 DEBUG(10,("remove_deferred_open_message_smb2_internal: "
995 "mid %llu\n",
996 (unsigned long long)mid ));
997
998 /* Ensure we don't have any outstanding timer event. */
999 TALLOC_FREE(state->te);
1000 /* Ensure we don't have any outstanding immediate event. */
1001 TALLOC_FREE(state->im);
1002 }
1003
1004 void remove_deferred_open_message_smb2(
1005 struct smbd_server_connection *sconn, uint64_t mid)
1006 {
1007 struct smbd_smb2_request *smb2req;
1008
1009 smb2req = find_open_smb2req(sconn, mid);
1010
1011 if (!smb2req) {
1012 DEBUG(10,("remove_deferred_open_message_smb2: "
1013 "can't find mid %llu\n",
1014 (unsigned long long)mid ));
1015 return;
1016 }
1017 remove_deferred_open_message_smb2_internal(smb2req, mid);
1018 }
1019
1020 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1021 struct tevent_immediate *im,
1022 void *private_data)
1023 {
1024 struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1025 struct smbd_smb2_request);
1026 struct smbd_server_connection *sconn = smb2req->sconn;
1027 uint64_t mid = get_mid_from_smb2req(smb2req);
1028 NTSTATUS status;
1029
1030 DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1031 "re-dispatching mid %llu\n",
1032 (unsigned long long)mid ));
1033
1034 status = smbd_smb2_request_dispatch(smb2req);
1035 if (!NT_STATUS_IS_OK(status)) {
1036 smbd_server_connection_terminate(sconn, nt_errstr(status));
1037 return;
1038 }
1039 }
1040
1041 void schedule_deferred_open_message_smb2(
1042 struct smbd_server_connection *sconn, uint64_t mid)
1043 {
1044 struct smbd_smb2_create_state *state = NULL;
1045 struct smbd_smb2_request *smb2req;
1046
1047 smb2req = find_open_smb2req(sconn, mid);
1048
1049 if (!smb2req) {
1050 DEBUG(10,("schedule_deferred_open_message_smb2: "
1051 "can't find mid %llu\n",
1052 (unsigned long long)mid ));
1053 return;
1054 }
1055 if (!smb2req->subreq) {
1056 return;
1057 }
1058 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1059 return;
1060 }
1061 state = tevent_req_data(smb2req->subreq,
1062 struct smbd_smb2_create_state);
1063 if (!state) {
1064 return;
1065 }
1066
1067 /* Ensure we don't have any outstanding timer event. */
1068 TALLOC_FREE(state->te);
1069 /* Ensure we don't have any outstanding immediate event. */
1070 TALLOC_FREE(state->im);
1071
1072 /*
1073 * This is subtle. We must null out the callback
1074 * before resheduling, else the first call to
1075 * tevent_req_nterror() causes the _receive()
1076 * function to be called, this causing tevent_req_post()
1077 * to crash.
1078 */
1079 tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1080
1081 state->im = tevent_create_immediate(smb2req);
1082 if (!state->im) {
1083 smbd_server_connection_terminate(smb2req->sconn,
1084 nt_errstr(NT_STATUS_NO_MEMORY));
1085 return;
1086 }
1087
1088 DEBUG(10,("schedule_deferred_open_message_smb2: "
1089 "re-processing mid %llu\n",
1090 (unsigned long long)mid ));
1091
1092 tevent_schedule_immediate(state->im,
1093 smb2req->sconn->ev_ctx,
1094 smbd_smb2_create_request_dispatch_immediate,
1095 smb2req);
1096 }
1097
1098 /*********************************************************
1099 Re-process this call.
1100 *********************************************************/
1101
1102 static void smb2_deferred_open_timer(struct event_context *ev,
1103 struct timed_event *te,
1104 struct timeval _tval,
1105 void *private_data)
1106 {
1107 NTSTATUS status;
1108 struct smbd_smb2_create_state *state = NULL;
1109 struct smbd_smb2_request *smb2req = talloc_get_type(private_data,
1110 struct smbd_smb2_request);
1111
1112 DEBUG(10,("smb2_deferred_open_timer: [idx=%d], %s\n",
1113 smb2req->current_idx,
1114 tevent_req_default_print(smb2req->subreq, talloc_tos()) ));
1115
1116 state = tevent_req_data(smb2req->subreq,
1117 struct smbd_smb2_create_state);
1118 if (!state) {
1119 return;
1120 }
1121 /*
1122 * Null this out, don't talloc_free. It will
1123 * be talloc_free'd by the tevent library when
1124 * this returns.
1125 */
1126 state->te = NULL;
1127 /* Ensure we don't have any outstanding immediate event. */
1128 TALLOC_FREE(state->im);
1129
1130 /*
1131 * This is subtle. We must null out the callback
1132 * before resheduling, else the first call to
1133 * tevent_req_nterror() causes the _receive()
1134 * function to be called, this causing tevent_req_post()
1135 * to crash.
1136 */
1137 tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1138
1139 status = smbd_smb2_request_dispatch(smb2req);
1140
1141 if (!NT_STATUS_IS_OK(status)) {
1142 smbd_server_connection_terminate(smb2req->sconn,
1143 nt_errstr(status));
1144 }
1145 }
1146
1147 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1148 {
1149 struct smbd_smb2_request *smb2req = NULL;
1150 struct smbd_smb2_create_state *state = tevent_req_data(req,
1151 struct smbd_smb2_create_state);
1152 uint64_t mid;
1153
1154 if (!state) {
1155 return false;
1156 }
1157
1158 if (!state->smb2req) {
1159 return false;
1160 }
1161
1162 smb2req = state->smb2req;
1163 mid = get_mid_from_smb2req(smb2req);
1164
1165 remove_deferred_open_entry(state->id, mid,
1166 messaging_server_id(smb2req->sconn->msg_ctx));
1167 remove_deferred_open_message_smb2_internal(smb2req, mid);
1168 smb2req->cancelled = true;
1169
1170 tevent_req_done(req);
1171 return true;
1172 }
1173
1174 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1175 struct timeval request_time,
1176 struct timeval timeout,
1177 struct file_id id,
1178 char *private_data,
1179 size_t priv_len)
1180 {
1181 struct tevent_req *req = NULL;
1182 struct smbd_smb2_create_state *state = NULL;
1183 struct timeval end_time;
1184
1185 if (!smb2req) {
1186 return false;
1187 }
1188 req = smb2req->subreq;
1189 if (!req) {
1190 return false;
1191 }
1192 state = tevent_req_data(req, struct smbd_smb2_create_state);
1193 if (!state) {
1194 return false;
1195 }
1196 state->id = id;
1197 state->request_time = request_time;
1198 state->private_data = data_blob_talloc(state, private_data,
1199 priv_len);
1200 if (!state->private_data.data) {
1201 return false;
1202 }
1203
1204 /* Re-schedule us to retry on timer expiry. */
1205 end_time = timeval_sum(&request_time, &timeout);
1206
1207 DEBUG(10,("push_deferred_open_message_smb2: "
1208 "timeout at %s\n",
1209 timeval_string(talloc_tos(),
1210 &end_time,
1211 true) ));
1212
1213 state->te = tevent_add_timer(smb2req->sconn->ev_ctx,
1214 state,
1215 end_time,
1216 smb2_deferred_open_timer,
1217 smb2req);
1218 if (!state->te) {
1219 return false;
1220 }
1221
1222 /* allow this request to be canceled */
1223 tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1224
1225 return true;
1226 }
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