source: vendor/3.6.23/source3/smbd/smb2_create.c

Last change on this file was 860, checked in by Silvan Scherrer, 11 years ago

Samba 3.6: updated vendor to latest version
File size: 34.7 KB
Line 
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
30int 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
53static 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
71static 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);
83static 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
98static void smbd_smb2_request_create_done(struct tevent_req *tsubreq);
99NTSTATUS 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, false);
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 return smbd_smb2_request_pending_queue(smb2req, tsubreq);
248}
249
250static uint64_t get_mid_from_smb2req(struct smbd_smb2_request *smb2req)
251{
252 uint8_t *reqhdr = (uint8_t *)smb2req->out.vector[smb2req->current_idx].iov_base;
253 return BVAL(reqhdr, SMB2_HDR_MESSAGE_ID);
254}
255
256static void smbd_smb2_request_create_done(struct tevent_req *tsubreq)
257{
258 struct smbd_smb2_request *smb2req = tevent_req_callback_data(tsubreq,
259 struct smbd_smb2_request);
260 int i = smb2req->current_idx;
261 uint8_t *outhdr;
262 DATA_BLOB outbody;
263 DATA_BLOB outdyn;
264 uint8_t out_oplock_level = 0;
265 uint32_t out_create_action = 0;
266 NTTIME out_creation_time = 0;
267 NTTIME out_last_access_time = 0;
268 NTTIME out_last_write_time = 0;
269 NTTIME out_change_time = 0;
270 uint64_t out_allocation_size = 0;
271 uint64_t out_end_of_file = 0;
272 uint32_t out_file_attributes = 0;
273 uint64_t out_file_id_persistent = 0;
274 uint64_t out_file_id_volatile = 0;
275 struct smb2_create_blobs out_context_blobs;
276 DATA_BLOB out_context_buffer;
277 uint16_t out_context_buffer_offset = 0;
278 NTSTATUS status;
279 NTSTATUS error; /* transport error */
280
281 if (smb2req->cancelled) {
282 uint64_t mid = get_mid_from_smb2req(smb2req);
283 DEBUG(10,("smbd_smb2_request_create_done: cancelled mid %llu\n",
284 (unsigned long long)mid ));
285 error = smbd_smb2_request_error(smb2req, NT_STATUS_CANCELLED);
286 if (!NT_STATUS_IS_OK(error)) {
287 smbd_server_connection_terminate(smb2req->sconn,
288 nt_errstr(error));
289 return;
290 }
291 return;
292 }
293
294 status = smbd_smb2_create_recv(tsubreq,
295 smb2req,
296 &out_oplock_level,
297 &out_create_action,
298 &out_creation_time,
299 &out_last_access_time,
300 &out_last_write_time,
301 &out_change_time,
302 &out_allocation_size,
303 &out_end_of_file,
304 &out_file_attributes,
305 &out_file_id_persistent,
306 &out_file_id_volatile,
307 &out_context_blobs);
308 if (!NT_STATUS_IS_OK(status)) {
309 error = smbd_smb2_request_error(smb2req, status);
310 if (!NT_STATUS_IS_OK(error)) {
311 smbd_server_connection_terminate(smb2req->sconn,
312 nt_errstr(error));
313 return;
314 }
315 return;
316 }
317
318 status = smb2_create_blob_push(smb2req, &out_context_buffer, out_context_blobs);
319 if (!NT_STATUS_IS_OK(status)) {
320 error = smbd_smb2_request_error(smb2req, status);
321 if (!NT_STATUS_IS_OK(error)) {
322 smbd_server_connection_terminate(smb2req->sconn,
323 nt_errstr(error));
324 return;
325 }
326 return;
327 }
328
329 if (out_context_buffer.length > 0) {
330 out_context_buffer_offset = SMB2_HDR_BODY + 0x58;
331 }
332
333 outhdr = (uint8_t *)smb2req->out.vector[i].iov_base;
334
335 outbody = data_blob_talloc(smb2req->out.vector, NULL, 0x58);
336 if (outbody.data == NULL) {
337 error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
338 if (!NT_STATUS_IS_OK(error)) {
339 smbd_server_connection_terminate(smb2req->sconn,
340 nt_errstr(error));
341 return;
342 }
343 return;
344 }
345
346 SSVAL(outbody.data, 0x00, 0x58 + 1); /* struct size */
347 SCVAL(outbody.data, 0x02,
348 out_oplock_level); /* oplock level */
349 SCVAL(outbody.data, 0x03, 0); /* reserved */
350 SIVAL(outbody.data, 0x04,
351 out_create_action); /* create action */
352 SBVAL(outbody.data, 0x08,
353 out_creation_time); /* creation time */
354 SBVAL(outbody.data, 0x10,
355 out_last_access_time); /* last access time */
356 SBVAL(outbody.data, 0x18,
357 out_last_write_time); /* last write time */
358 SBVAL(outbody.data, 0x20,
359 out_change_time); /* change time */
360 SBVAL(outbody.data, 0x28,
361 out_allocation_size); /* allocation size */
362 SBVAL(outbody.data, 0x30,
363 out_end_of_file); /* end of file */
364 SIVAL(outbody.data, 0x38,
365 out_file_attributes); /* file attributes */
366 SIVAL(outbody.data, 0x3C, 0); /* reserved */
367 SBVAL(outbody.data, 0x40,
368 out_file_id_persistent); /* file id (persistent) */
369 SBVAL(outbody.data, 0x48,
370 out_file_id_volatile); /* file id (volatile) */
371 SIVAL(outbody.data, 0x50,
372 out_context_buffer_offset); /* create contexts offset */
373 SIVAL(outbody.data, 0x54,
374 out_context_buffer.length); /* create contexts length */
375
376 outdyn = out_context_buffer;
377
378 error = smbd_smb2_request_done(smb2req, outbody, &outdyn);
379 if (!NT_STATUS_IS_OK(error)) {
380 smbd_server_connection_terminate(smb2req->sconn,
381 nt_errstr(error));
382 return;
383 }
384}
385
386struct smbd_smb2_create_state {
387 struct smbd_smb2_request *smb2req;
388 struct smb_request *smb1req;
389 bool open_was_deferred;
390 struct timed_event *te;
391 struct tevent_immediate *im;
392 struct timeval request_time;
393 struct file_id id;
394 DATA_BLOB private_data;
395 uint8_t out_oplock_level;
396 uint32_t out_create_action;
397 NTTIME out_creation_time;
398 NTTIME out_last_access_time;
399 NTTIME out_last_write_time;
400 NTTIME out_change_time;
401 uint64_t out_allocation_size;
402 uint64_t out_end_of_file;
403 uint32_t out_file_attributes;
404 uint64_t out_file_id_persistent;
405 uint64_t out_file_id_volatile;
406 struct smb2_create_blobs out_context_blobs;
407};
408
409static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
410 struct tevent_context *ev,
411 struct smbd_smb2_request *smb2req,
412 uint8_t in_oplock_level,
413 uint32_t in_impersonation_level,
414 uint32_t in_desired_access,
415 uint32_t in_file_attributes,
416 uint32_t in_share_access,
417 uint32_t in_create_disposition,
418 uint32_t in_create_options,
419 const char *in_name,
420 struct smb2_create_blobs in_context_blobs)
421{
422 struct tevent_req *req = NULL;
423 struct smbd_smb2_create_state *state = NULL;
424 NTSTATUS status;
425 struct smb_request *smb1req = NULL;
426 files_struct *result = NULL;
427 int info;
428 struct timespec write_time_ts;
429 struct smb2_create_blobs out_context_blobs;
430 int requested_oplock_level;
431
432 ZERO_STRUCT(out_context_blobs);
433
434 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat_conn))) {
435 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
436 } else {
437 requested_oplock_level = in_oplock_level;
438 }
439
440
441 if (!smb2req->async) {
442 /* New create call. */
443 req = tevent_req_create(mem_ctx, &state,
444 struct smbd_smb2_create_state);
445 if (req == NULL) {
446 return NULL;
447 }
448 state->smb2req = smb2req;
449 smb2req->subreq = req; /* So we can find this when going async. */
450
451 smb1req = smbd_smb2_fake_smb_request(smb2req);
452 if (tevent_req_nomem(smb1req, req)) {
453 return tevent_req_post(req, ev);
454 }
455 state->smb1req = smb1req;
456 DEBUG(10,("smbd_smb2_create: name[%s]\n",
457 in_name));
458 } else {
459 /* Re-entrant create call. */
460 req = smb2req->subreq;
461 state = tevent_req_data(req,
462 struct smbd_smb2_create_state);
463 smb1req = state->smb1req;
464 DEBUG(10,("smbd_smb2_create_send: reentrant for file %s\n",
465 in_name ));
466 }
467
468 if (IS_IPC(smb1req->conn)) {
469 const char *pipe_name = in_name;
470
471 if (!lp_nt_pipe_support()) {
472 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
473 return tevent_req_post(req, ev);
474 }
475
476 /* Strip \\ off the name. */
477 if (pipe_name[0] == '\\') {
478 pipe_name++;
479 }
480
481 status = open_np_file(smb1req, pipe_name, &result);
482 if (!NT_STATUS_IS_OK(status)) {
483 tevent_req_nterror(req, status);
484 return tevent_req_post(req, ev);
485 }
486 info = FILE_WAS_OPENED;
487 } else if (CAN_PRINT(smb1req->conn)) {
488 status = file_new(smb1req, smb1req->conn, &result);
489 if(!NT_STATUS_IS_OK(status)) {
490 tevent_req_nterror(req, status);
491 return tevent_req_post(req, ev);
492 }
493
494 status = print_spool_open(result, in_name,
495 smb1req->vuid);
496 if (!NT_STATUS_IS_OK(status)) {
497 file_free(smb1req, result);
498 tevent_req_nterror(req, status);
499 return tevent_req_post(req, ev);
500 }
501 info = FILE_WAS_CREATED;
502 } else {
503 char *fname;
504 struct smb_filename *smb_fname = NULL;
505 struct smb2_create_blob *exta = NULL;
506 struct ea_list *ea_list = NULL;
507 struct smb2_create_blob *mxac = NULL;
508 NTTIME max_access_time = 0;
509 struct smb2_create_blob *secd = NULL;
510 struct security_descriptor *sec_desc = NULL;
511 struct smb2_create_blob *dhnq = NULL;
512 struct smb2_create_blob *dhnc = NULL;
513 struct smb2_create_blob *alsi = NULL;
514 uint64_t allocation_size = 0;
515 struct smb2_create_blob *twrp = NULL;
516 struct smb2_create_blob *qfid = NULL;
517
518 exta = smb2_create_blob_find(&in_context_blobs,
519 SMB2_CREATE_TAG_EXTA);
520 mxac = smb2_create_blob_find(&in_context_blobs,
521 SMB2_CREATE_TAG_MXAC);
522 secd = smb2_create_blob_find(&in_context_blobs,
523 SMB2_CREATE_TAG_SECD);
524 dhnq = smb2_create_blob_find(&in_context_blobs,
525 SMB2_CREATE_TAG_DHNQ);
526 dhnc = smb2_create_blob_find(&in_context_blobs,
527 SMB2_CREATE_TAG_DHNC);
528 alsi = smb2_create_blob_find(&in_context_blobs,
529 SMB2_CREATE_TAG_ALSI);
530 twrp = smb2_create_blob_find(&in_context_blobs,
531 SMB2_CREATE_TAG_TWRP);
532 qfid = smb2_create_blob_find(&in_context_blobs,
533 SMB2_CREATE_TAG_QFID);
534
535 fname = talloc_strdup(state, in_name);
536 if (tevent_req_nomem(fname, req)) {
537 return tevent_req_post(req, ev);
538 }
539
540 if (exta) {
541 if (dhnc) {
542 tevent_req_nterror(req,NT_STATUS_OBJECT_NAME_NOT_FOUND);
543 return tevent_req_post(req, ev);
544 }
545
546 ea_list = read_nttrans_ea_list(mem_ctx,
547 (const char *)exta->data.data, exta->data.length);
548 if (!ea_list) {
549 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
550 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
551 return tevent_req_post(req, ev);
552 }
553 }
554
555 if (mxac) {
556 if (dhnc) {
557 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
558 return tevent_req_post(req, ev);
559 }
560
561 if (mxac->data.length == 0) {
562 max_access_time = 0;
563 } else if (mxac->data.length == 8) {
564 max_access_time = BVAL(mxac->data.data, 0);
565 } else {
566 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
567 return tevent_req_post(req, ev);
568 }
569 }
570
571 if (secd) {
572 enum ndr_err_code ndr_err;
573
574 if (dhnc) {
575 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
576 return tevent_req_post(req, ev);
577 }
578
579 sec_desc = talloc_zero(state, struct security_descriptor);
580 if (tevent_req_nomem(sec_desc, req)) {
581 return tevent_req_post(req, ev);
582 }
583
584 ndr_err = ndr_pull_struct_blob(&secd->data,
585 sec_desc, sec_desc,
586 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
587 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
588 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
589 ndr_errstr(ndr_err)));
590 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
591 return tevent_req_post(req, ev);
592 }
593 }
594
595 if (dhnq) {
596 if (dhnc) {
597 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
598 return tevent_req_post(req, ev);
599 }
600
601 if (dhnq->data.length != 16) {
602 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
603 return tevent_req_post(req, ev);
604 }
605 /*
606 * we don't support durable handles yet
607 * and have to ignore this
608 */
609 }
610
611 if (dhnc) {
612 if (dhnc->data.length != 16) {
613 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
614 return tevent_req_post(req, ev);
615 }
616 /* we don't support durable handles yet */
617 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
618 return tevent_req_post(req, ev);
619 }
620
621 if (alsi) {
622 if (dhnc) {
623 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
624 return tevent_req_post(req, ev);
625 }
626
627 if (alsi->data.length != 8) {
628 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
629 return tevent_req_post(req, ev);
630 }
631 allocation_size = BVAL(alsi->data.data, 0);
632 }
633
634 if (twrp) {
635 NTTIME nttime;
636 time_t t;
637 struct tm *tm;
638
639 if (dhnc) {
640 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
641 return tevent_req_post(req, ev);
642 }
643
644 if (twrp->data.length != 8) {
645 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
646 return tevent_req_post(req, ev);
647 }
648
649 nttime = BVAL(twrp->data.data, 0);
650 t = nt_time_to_unix(nttime);
651 tm = gmtime(&t);
652
653 TALLOC_FREE(fname);
654 fname = talloc_asprintf(state,
655 "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
656 tm->tm_year + 1900,
657 tm->tm_mon + 1,
658 tm->tm_mday,
659 tm->tm_hour,
660 tm->tm_min,
661 tm->tm_sec,
662 in_name);
663 if (tevent_req_nomem(fname, req)) {
664 return tevent_req_post(req, ev);
665 }
666 }
667
668 if (qfid) {
669 if (qfid->data.length != 0) {
670 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
671 return tevent_req_post(req, ev);
672 }
673 }
674
675 /* these are ignored for SMB2 */
676 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
677 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
678
679 /*
680 * For a DFS path the function parse_dfs_path()
681 * will do the path processing.
682 */
683
684 if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
685 /* convert '\\' into '/' */
686 status = check_path_syntax(fname);
687 if (!NT_STATUS_IS_OK(status)) {
688 tevent_req_nterror(req, status);
689 return tevent_req_post(req, ev);
690 }
691 }
692
693 status = filename_convert(req,
694 smb1req->conn,
695 smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
696 fname,
697 (in_create_disposition == FILE_CREATE) ?
698 UCF_CREATING_FILE : 0,
699 NULL,
700 &smb_fname);
701 if (!NT_STATUS_IS_OK(status)) {
702 tevent_req_nterror(req, status);
703 return tevent_req_post(req, ev);
704 }
705
706 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
707
708 status = SMB_VFS_CREATE_FILE(smb1req->conn,
709 smb1req,
710 0, /* root_dir_fid */
711 smb_fname,
712 in_desired_access,
713 in_share_access,
714 in_create_disposition,
715 in_create_options,
716 in_file_attributes,
717 map_smb2_oplock_levels_to_samba(requested_oplock_level),
718 allocation_size,
719 0, /* private_flags */
720 sec_desc,
721 ea_list,
722 &result,
723 &info);
724 if (!NT_STATUS_IS_OK(status)) {
725 if (open_was_deferred(smb1req->mid)) {
726 return req;
727 }
728 tevent_req_nterror(req, status);
729 return tevent_req_post(req, ev);
730 }
731
732 if (mxac) {
733 NTTIME last_write_time;
734
735 unix_timespec_to_nt_time(&last_write_time,
736 result->fsp_name->st.st_ex_mtime);
737 if (last_write_time != max_access_time) {
738 uint8_t p[8];
739 uint32_t max_access_granted;
740 DATA_BLOB blob = data_blob_const(p, sizeof(p));
741
742 status = smbd_calculate_access_mask(smb1req->conn,
743 result->fsp_name,
744 /*
745 * at this stage
746 * it exists
747 */
748 true,
749 SEC_FLAG_MAXIMUM_ALLOWED,
750 &max_access_granted);
751
752 SIVAL(p, 0, NT_STATUS_V(status));
753 SIVAL(p, 4, max_access_granted);
754
755 status = smb2_create_blob_add(state,
756 &out_context_blobs,
757 SMB2_CREATE_TAG_MXAC,
758 blob);
759 if (!NT_STATUS_IS_OK(status)) {
760 tevent_req_nterror(req, status);
761 return tevent_req_post(req, ev);
762 }
763 }
764 }
765
766 if (qfid) {
767 uint8_t p[32];
768 uint64_t file_index = get_FileIndex(result->conn,
769 &result->fsp_name->st);
770 DATA_BLOB blob = data_blob_const(p, sizeof(p));
771
772 ZERO_STRUCT(p);
773
774 /* From conversations with Microsoft engineers at
775 the MS plugfest. The first 8 bytes are the "volume index"
776 == inode, the second 8 bytes are the "volume id",
777 == dev. This will be updated in the SMB2 doc. */
778 SBVAL(p, 0, file_index);
779 SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
780
781 status = smb2_create_blob_add(state, &out_context_blobs,
782 SMB2_CREATE_TAG_QFID,
783 blob);
784 if (!NT_STATUS_IS_OK(status)) {
785 tevent_req_nterror(req, status);
786 return tevent_req_post(req, ev);
787 }
788 }
789 }
790
791 smb2req->compat_chain_fsp = smb1req->chain_fsp;
792
793 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat_conn))) {
794 state->out_oplock_level = in_oplock_level;
795 } else {
796 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
797 }
798
799 if ((in_create_disposition == FILE_SUPERSEDE)
800 && (info == FILE_WAS_OVERWRITTEN)) {
801 state->out_create_action = FILE_WAS_SUPERSEDED;
802 } else {
803 state->out_create_action = info;
804 }
805 state->out_file_attributes = dos_mode(result->conn,
806 result->fsp_name);
807 /* Deal with other possible opens having a modified
808 write time. JRA. */
809 ZERO_STRUCT(write_time_ts);
810 get_file_infos(result->file_id, 0, NULL, &write_time_ts);
811 if (!null_timespec(write_time_ts)) {
812 update_stat_ex_mtime(&result->fsp_name->st, write_time_ts);
813 }
814
815 unix_timespec_to_nt_time(&state->out_creation_time,
816 get_create_timespec(smb1req->conn, result,
817 result->fsp_name));
818 unix_timespec_to_nt_time(&state->out_last_access_time,
819 result->fsp_name->st.st_ex_atime);
820 unix_timespec_to_nt_time(&state->out_last_write_time,
821 result->fsp_name->st.st_ex_mtime);
822 unix_timespec_to_nt_time(&state->out_change_time,
823 get_change_timespec(smb1req->conn, result,
824 result->fsp_name));
825 state->out_allocation_size =
826 SMB_VFS_GET_ALLOC_SIZE(smb1req->conn, result,
827 &(result->fsp_name->st));
828 state->out_end_of_file = result->fsp_name->st.st_ex_size;
829 if (state->out_file_attributes == 0) {
830 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
831 }
832 state->out_file_id_persistent = fsp_persistent_id(result);
833 state->out_file_id_volatile = result->fnum;
834 state->out_context_blobs = out_context_blobs;
835
836 tevent_req_done(req);
837 return tevent_req_post(req, ev);
838}
839
840static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
841 TALLOC_CTX *mem_ctx,
842 uint8_t *out_oplock_level,
843 uint32_t *out_create_action,
844 NTTIME *out_creation_time,
845 NTTIME *out_last_access_time,
846 NTTIME *out_last_write_time,
847 NTTIME *out_change_time,
848 uint64_t *out_allocation_size,
849 uint64_t *out_end_of_file,
850 uint32_t *out_file_attributes,
851 uint64_t *out_file_id_persistent,
852 uint64_t *out_file_id_volatile,
853 struct smb2_create_blobs *out_context_blobs)
854{
855 NTSTATUS status;
856 struct smbd_smb2_create_state *state = tevent_req_data(req,
857 struct smbd_smb2_create_state);
858
859 if (tevent_req_is_nterror(req, &status)) {
860 tevent_req_received(req);
861 return status;
862 }
863
864 *out_oplock_level = state->out_oplock_level;
865 *out_create_action = state->out_create_action;
866 *out_creation_time = state->out_creation_time;
867 *out_last_access_time = state->out_last_access_time;
868 *out_last_write_time = state->out_last_write_time;
869 *out_change_time = state->out_change_time;
870 *out_allocation_size = state->out_allocation_size;
871 *out_end_of_file = state->out_end_of_file;
872 *out_file_attributes = state->out_file_attributes;
873 *out_file_id_persistent = state->out_file_id_persistent;
874 *out_file_id_volatile = state->out_file_id_volatile;
875 *out_context_blobs = state->out_context_blobs;
876
877 talloc_steal(mem_ctx, state->out_context_blobs.blobs);
878
879 tevent_req_received(req);
880 return NT_STATUS_OK;
881}
882
883/*********************************************************
884 Code for dealing with deferred opens.
885*********************************************************/
886
887bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
888 struct timeval *p_request_time,
889 void **pp_state)
890{
891 struct smbd_smb2_create_state *state = NULL;
892 struct tevent_req *req = NULL;
893
894 if (!smb2req) {
895 return false;
896 }
897 req = smb2req->subreq;
898 if (!req) {
899 return false;
900 }
901 state = tevent_req_data(req, struct smbd_smb2_create_state);
902 if (!state) {
903 return false;
904 }
905 if (!state->open_was_deferred) {
906 return false;
907 }
908 if (p_request_time) {
909 *p_request_time = state->request_time;
910 }
911 if (pp_state) {
912 *pp_state = (void *)state->private_data.data;
913 }
914 return true;
915}
916
917/*********************************************************
918 Re-process this call early - requested by message or
919 close.
920*********************************************************/
921
922static struct smbd_smb2_request *find_open_smb2req(
923 struct smbd_server_connection *sconn, uint64_t mid)
924{
925 struct smbd_smb2_request *smb2req;
926
927 for (smb2req = sconn->smb2.requests; smb2req; smb2req = smb2req->next) {
928 uint64_t message_id;
929 if (smb2req->subreq == NULL) {
930 /* This message has been processed. */
931 continue;
932 }
933 if (!tevent_req_is_in_progress(smb2req->subreq)) {
934 /* This message has been processed. */
935 continue;
936 }
937 message_id = get_mid_from_smb2req(smb2req);
938 if (message_id == mid) {
939 return smb2req;
940 }
941 }
942 return NULL;
943}
944
945bool open_was_deferred_smb2(struct smbd_server_connection *sconn, uint64_t mid)
946{
947 struct smbd_smb2_create_state *state = NULL;
948 struct smbd_smb2_request *smb2req;
949
950 smb2req = find_open_smb2req(sconn, mid);
951
952 if (!smb2req) {
953 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
954 (unsigned long long)mid));
955 return false;
956 }
957 if (!smb2req->subreq) {
958 return false;
959 }
960 if (!tevent_req_is_in_progress(smb2req->subreq)) {
961 return false;
962 }
963 state = tevent_req_data(smb2req->subreq,
964 struct smbd_smb2_create_state);
965 if (!state) {
966 return false;
967 }
968 /* It's not in progress if there's no timeout event. */
969 if (!state->open_was_deferred) {
970 return false;
971 }
972
973 DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
974 (unsigned long long)mid));
975
976 return true;
977}
978
979static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
980 uint64_t mid)
981{
982 struct smbd_smb2_create_state *state = NULL;
983
984 if (!smb2req->subreq) {
985 return;
986 }
987 if (!tevent_req_is_in_progress(smb2req->subreq)) {
988 return;
989 }
990 state = tevent_req_data(smb2req->subreq,
991 struct smbd_smb2_create_state);
992 if (!state) {
993 return;
994 }
995
996 DEBUG(10,("remove_deferred_open_message_smb2_internal: "
997 "mid %llu\n",
998 (unsigned long long)mid ));
999
1000 state->open_was_deferred = false;
1001 /* Ensure we don't have any outstanding timer event. */
1002 TALLOC_FREE(state->te);
1003 /* Ensure we don't have any outstanding immediate event. */
1004 TALLOC_FREE(state->im);
1005}
1006
1007void remove_deferred_open_message_smb2(
1008 struct smbd_server_connection *sconn, uint64_t mid)
1009{
1010 struct smbd_smb2_request *smb2req;
1011
1012 smb2req = find_open_smb2req(sconn, mid);
1013
1014 if (!smb2req) {
1015 DEBUG(10,("remove_deferred_open_message_smb2: "
1016 "can't find mid %llu\n",
1017 (unsigned long long)mid ));
1018 return;
1019 }
1020 remove_deferred_open_message_smb2_internal(smb2req, mid);
1021}
1022
1023static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1024 struct tevent_immediate *im,
1025 void *private_data)
1026{
1027 struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1028 struct smbd_smb2_request);
1029 struct smbd_server_connection *sconn = smb2req->sconn;
1030 uint64_t mid = get_mid_from_smb2req(smb2req);
1031 NTSTATUS status;
1032
1033 DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1034 "re-dispatching mid %llu\n",
1035 (unsigned long long)mid ));
1036
1037 status = smbd_smb2_request_dispatch(smb2req);
1038 if (!NT_STATUS_IS_OK(status)) {
1039 smbd_server_connection_terminate(sconn, nt_errstr(status));
1040 return;
1041 }
1042}
1043
1044void schedule_deferred_open_message_smb2(
1045 struct smbd_server_connection *sconn, uint64_t mid)
1046{
1047 struct smbd_smb2_create_state *state = NULL;
1048 struct smbd_smb2_request *smb2req;
1049
1050 smb2req = find_open_smb2req(sconn, mid);
1051
1052 if (!smb2req) {
1053 DEBUG(10,("schedule_deferred_open_message_smb2: "
1054 "can't find mid %llu\n",
1055 (unsigned long long)mid ));
1056 return;
1057 }
1058 if (!smb2req->subreq) {
1059 return;
1060 }
1061 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1062 return;
1063 }
1064 state = tevent_req_data(smb2req->subreq,
1065 struct smbd_smb2_create_state);
1066 if (!state) {
1067 return;
1068 }
1069
1070 /* Ensure we don't have any outstanding timer event. */
1071 TALLOC_FREE(state->te);
1072 /* Ensure we don't have any outstanding immediate event. */
1073 TALLOC_FREE(state->im);
1074
1075 /*
1076 * This is subtle. We must null out the callback
1077 * before resheduling, else the first call to
1078 * tevent_req_nterror() causes the _receive()
1079 * function to be called, this causing tevent_req_post()
1080 * to crash.
1081 */
1082 tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1083
1084 state->im = tevent_create_immediate(smb2req);
1085 if (!state->im) {
1086 smbd_server_connection_terminate(smb2req->sconn,
1087 nt_errstr(NT_STATUS_NO_MEMORY));
1088 }
1089
1090 DEBUG(10,("schedule_deferred_open_message_smb2: "
1091 "re-processing mid %llu\n",
1092 (unsigned long long)mid ));
1093
1094 tevent_schedule_immediate(state->im,
1095 smb2req->sconn->smb2.event_ctx,
1096 smbd_smb2_create_request_dispatch_immediate,
1097 smb2req);
1098}
1099
1100/*********************************************************
1101 Re-process this call.
1102*********************************************************/
1103
1104static void smb2_deferred_open_timer(struct event_context *ev,
1105 struct timed_event *te,
1106 struct timeval _tval,
1107 void *private_data)
1108{
1109 NTSTATUS status;
1110 struct smbd_smb2_create_state *state = NULL;
1111 struct smbd_smb2_request *smb2req = talloc_get_type(private_data,
1112 struct smbd_smb2_request);
1113
1114 DEBUG(10,("smb2_deferred_open_timer: [idx=%d], %s\n",
1115 smb2req->current_idx,
1116 tevent_req_default_print(smb2req->subreq, talloc_tos()) ));
1117
1118 state = tevent_req_data(smb2req->subreq,
1119 struct smbd_smb2_create_state);
1120 if (!state) {
1121 return;
1122 }
1123 /*
1124 * Null this out, don't talloc_free. It will
1125 * be talloc_free'd by the tevent library when
1126 * this returns.
1127 */
1128 state->te = NULL;
1129 /* Ensure we don't have any outstanding immediate event. */
1130 TALLOC_FREE(state->im);
1131
1132 /*
1133 * This is subtle. We must null out the callback
1134 * before resheduling, else the first call to
1135 * tevent_req_nterror() causes the _receive()
1136 * function to be called, this causing tevent_req_post()
1137 * to crash.
1138 */
1139 tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1140
1141 status = smbd_smb2_request_dispatch(smb2req);
1142
1143 if (!NT_STATUS_IS_OK(status)) {
1144 smbd_server_connection_terminate(smb2req->sconn,
1145 nt_errstr(status));
1146 }
1147}
1148
1149static bool smbd_smb2_create_cancel(struct tevent_req *req)
1150{
1151 struct smbd_smb2_request *smb2req = NULL;
1152 struct smbd_smb2_create_state *state = tevent_req_data(req,
1153 struct smbd_smb2_create_state);
1154 uint64_t mid;
1155
1156 if (!state) {
1157 return false;
1158 }
1159
1160 if (!state->smb2req) {
1161 return false;
1162 }
1163
1164 smb2req = state->smb2req;
1165 mid = get_mid_from_smb2req(smb2req);
1166
1167 remove_deferred_open_entry(state->id, mid,
1168 sconn_server_id(smb2req->sconn));
1169 remove_deferred_open_message_smb2_internal(smb2req, mid);
1170 smb2req->cancelled = true;
1171
1172 tevent_req_done(req);
1173 return true;
1174}
1175
1176bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1177 struct timeval request_time,
1178 struct timeval timeout,
1179 struct file_id id,
1180 char *private_data,
1181 size_t priv_len)
1182{
1183 struct tevent_req *req = NULL;
1184 struct smbd_smb2_create_state *state = NULL;
1185 struct timeval end_time;
1186
1187 if (!smb2req) {
1188 return false;
1189 }
1190 req = smb2req->subreq;
1191 if (!req) {
1192 return false;
1193 }
1194 state = tevent_req_data(req, struct smbd_smb2_create_state);
1195 if (!state) {
1196 return false;
1197 }
1198 state->id = id;
1199 state->request_time = request_time;
1200 state->private_data = data_blob_talloc(state, private_data,
1201 priv_len);
1202 if (!state->private_data.data) {
1203 return false;
1204 }
1205
1206#if 1
1207 /* Boo - turns out this isn't what W2K8R2
1208 does. It actually sends the STATUS_PENDING
1209 message followed by the STATUS_SHARING_VIOLATION
1210 message. Surely this means that all open
1211 calls (even on directories) will potentially
1212 fail in a chain.... ? And I've seen directory
1213 opens as the start of a chain. JRA.
1214
1215 Update: 19th May 2010. Talking with Microsoft
1216 engineers at the plugfest this is a bug in
1217 Windows. Re-enable this code.
1218 */
1219 /*
1220 * More subtlety. To match W2K8R2 don't
1221 * send a "gone async" message if it's simply
1222 * a STATUS_SHARING_VIOLATION (short) wait, not
1223 * an oplock break wait. We do this by prematurely
1224 * setting smb2req->async flag.
1225 */
1226 if (timeout.tv_sec < 2) {
1227 DEBUG(10,("push_deferred_open_message_smb2: "
1228 "short timer wait (usec = %u). "
1229 "Don't send async message.\n",
1230 (unsigned int)timeout.tv_usec ));
1231 smb2req->async = true;
1232 }
1233#endif
1234
1235 /* Re-schedule us to retry on timer expiry. */
1236 end_time = timeval_sum(&request_time, &timeout);
1237
1238 DEBUG(10,("push_deferred_open_message_smb2: "
1239 "timeout at %s\n",
1240 timeval_string(talloc_tos(),
1241 &end_time,
1242 true) ));
1243
1244 state->open_was_deferred = true;
1245 state->te = event_add_timed(smb2req->sconn->smb2.event_ctx,
1246 state,
1247 end_time,
1248 smb2_deferred_open_timer,
1249 smb2req);
1250 if (!state->te) {
1251 return false;
1252 }
1253
1254 /* allow this request to be canceled */
1255 tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1256
1257 return true;
1258}
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