source: vendor/3.6.9/source3/smbd/smb2_create.c

Last change on this file was 746, checked in by Silvan Scherrer, 13 years ago

Samba Server: updated vendor to 3.6.9
File size: 35.8 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 0,
698 NULL,
699 &smb_fname);
700 if (!NT_STATUS_IS_OK(status)) {
701 tevent_req_nterror(req, status);
702 return tevent_req_post(req, ev);
703 }
704
705 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
706
707 status = SMB_VFS_CREATE_FILE(smb1req->conn,
708 smb1req,
709 0, /* root_dir_fid */
710 smb_fname,
711 in_desired_access,
712 in_share_access,
713 in_create_disposition,
714 in_create_options,
715 in_file_attributes,
716 map_smb2_oplock_levels_to_samba(requested_oplock_level),
717 allocation_size,
718 0, /* private_flags */
719 sec_desc,
720 ea_list,
721 &result,
722 &info);
723 if (!NT_STATUS_IS_OK(status)) {
724 if (open_was_deferred(smb1req->mid)) {
725 return req;
726 }
727 tevent_req_nterror(req, status);
728 return tevent_req_post(req, ev);
729 }
730
731 if (mxac) {
732 NTTIME last_write_time;
733
734 unix_timespec_to_nt_time(&last_write_time,
735 result->fsp_name->st.st_ex_mtime);
736 if (last_write_time != max_access_time) {
737 uint8_t p[8];
738 uint32_t max_access_granted;
739 DATA_BLOB blob = data_blob_const(p, sizeof(p));
740
741 status = smbd_calculate_access_mask(smb1req->conn,
742 result->fsp_name,
743 /*
744 * at this stage
745 * it exists
746 */
747 true,
748 SEC_FLAG_MAXIMUM_ALLOWED,
749 &max_access_granted);
750
751 SIVAL(p, 0, NT_STATUS_V(status));
752 SIVAL(p, 4, max_access_granted);
753
754 status = smb2_create_blob_add(state,
755 &out_context_blobs,
756 SMB2_CREATE_TAG_MXAC,
757 blob);
758 if (!NT_STATUS_IS_OK(status)) {
759 tevent_req_nterror(req, status);
760 return tevent_req_post(req, ev);
761 }
762 }
763 }
764
765 if (qfid) {
766 uint8_t p[32];
767 uint64_t file_index = get_FileIndex(result->conn,
768 &result->fsp_name->st);
769 DATA_BLOB blob = data_blob_const(p, sizeof(p));
770
771 ZERO_STRUCT(p);
772
773 /* From conversations with Microsoft engineers at
774 the MS plugfest. The first 8 bytes are the "volume index"
775 == inode, the second 8 bytes are the "volume id",
776 == dev. This will be updated in the SMB2 doc. */
777 SBVAL(p, 0, file_index);
778 SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
779
780 status = smb2_create_blob_add(state, &out_context_blobs,
781 SMB2_CREATE_TAG_QFID,
782 blob);
783 if (!NT_STATUS_IS_OK(status)) {
784 tevent_req_nterror(req, status);
785 return tevent_req_post(req, ev);
786 }
787 }
788 }
789
790 smb2req->compat_chain_fsp = smb1req->chain_fsp;
791
792 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat_conn))) {
793 state->out_oplock_level = in_oplock_level;
794 } else {
795 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
796 }
797
798 if ((in_create_disposition == FILE_SUPERSEDE)
799 && (info == FILE_WAS_OVERWRITTEN)) {
800 state->out_create_action = FILE_WAS_SUPERSEDED;
801 } else {
802 state->out_create_action = info;
803 }
804 state->out_file_attributes = dos_mode(result->conn,
805 result->fsp_name);
806 /* Deal with other possible opens having a modified
807 write time. JRA. */
808 ZERO_STRUCT(write_time_ts);
809 get_file_infos(result->file_id, 0, NULL, &write_time_ts);
810 if (!null_timespec(write_time_ts)) {
811 update_stat_ex_mtime(&result->fsp_name->st, write_time_ts);
812 }
813
814 unix_timespec_to_nt_time(&state->out_creation_time,
815 get_create_timespec(smb1req->conn, result,
816 result->fsp_name));
817 unix_timespec_to_nt_time(&state->out_last_access_time,
818 result->fsp_name->st.st_ex_atime);
819 unix_timespec_to_nt_time(&state->out_last_write_time,
820 result->fsp_name->st.st_ex_mtime);
821 unix_timespec_to_nt_time(&state->out_change_time,
822 get_change_timespec(smb1req->conn, result,
823 result->fsp_name));
824 state->out_allocation_size =
825 SMB_VFS_GET_ALLOC_SIZE(smb1req->conn, result,
826 &(result->fsp_name->st));
827 state->out_end_of_file = result->fsp_name->st.st_ex_size;
828 if (state->out_file_attributes == 0) {
829 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
830 }
831 state->out_file_id_persistent = fsp_persistent_id(result);
832 state->out_file_id_volatile = result->fnum;
833 state->out_context_blobs = out_context_blobs;
834
835 tevent_req_done(req);
836 return tevent_req_post(req, ev);
837}
838
839static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
840 TALLOC_CTX *mem_ctx,
841 uint8_t *out_oplock_level,
842 uint32_t *out_create_action,
843 NTTIME *out_creation_time,
844 NTTIME *out_last_access_time,
845 NTTIME *out_last_write_time,
846 NTTIME *out_change_time,
847 uint64_t *out_allocation_size,
848 uint64_t *out_end_of_file,
849 uint32_t *out_file_attributes,
850 uint64_t *out_file_id_persistent,
851 uint64_t *out_file_id_volatile,
852 struct smb2_create_blobs *out_context_blobs)
853{
854 NTSTATUS status;
855 struct smbd_smb2_create_state *state = tevent_req_data(req,
856 struct smbd_smb2_create_state);
857
858 if (tevent_req_is_nterror(req, &status)) {
859 tevent_req_received(req);
860 return status;
861 }
862
863 *out_oplock_level = state->out_oplock_level;
864 *out_create_action = state->out_create_action;
865 *out_creation_time = state->out_creation_time;
866 *out_last_access_time = state->out_last_access_time;
867 *out_last_write_time = state->out_last_write_time;
868 *out_change_time = state->out_change_time;
869 *out_allocation_size = state->out_allocation_size;
870 *out_end_of_file = state->out_end_of_file;
871 *out_file_attributes = state->out_file_attributes;
872 *out_file_id_persistent = state->out_file_id_persistent;
873 *out_file_id_volatile = state->out_file_id_volatile;
874 *out_context_blobs = state->out_context_blobs;
875
876 talloc_steal(mem_ctx, state->out_context_blobs.blobs);
877
878 tevent_req_received(req);
879 return NT_STATUS_OK;
880}
881
882/*********************************************************
883 Code for dealing with deferred opens.
884*********************************************************/
885
886bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
887 struct timeval *p_request_time,
888 void **pp_state)
889{
890 struct smbd_smb2_create_state *state = NULL;
891 struct tevent_req *req = NULL;
892
893 if (!smb2req) {
894 return false;
895 }
896 if (!smb2req->async) {
897 return false;
898 }
899 req = smb2req->subreq;
900 if (!req) {
901 return false;
902 }
903 state = tevent_req_data(req, struct smbd_smb2_create_state);
904 if (!state) {
905 return false;
906 }
907 if (p_request_time) {
908 *p_request_time = state->request_time;
909 }
910 if (pp_state) {
911 *pp_state = (void *)state->private_data.data;
912 }
913 return true;
914}
915
916/*********************************************************
917 Re-process this call early - requested by message or
918 close.
919*********************************************************/
920
921static struct smbd_smb2_request *find_open_smb2req(
922 struct smbd_server_connection *sconn, uint64_t mid)
923{
924 struct smbd_smb2_request *smb2req;
925
926 for (smb2req = sconn->smb2.requests; smb2req; smb2req = smb2req->next) {
927 uint64_t message_id;
928 if (smb2req->subreq == NULL) {
929 /* This message has been processed. */
930 continue;
931 }
932 if (!tevent_req_is_in_progress(smb2req->subreq)) {
933 /* This message has been processed. */
934 continue;
935 }
936 message_id = get_mid_from_smb2req(smb2req);
937 if (message_id == mid) {
938 return smb2req;
939 }
940 }
941 return NULL;
942}
943
944bool open_was_deferred_smb2(struct smbd_server_connection *sconn, uint64_t mid)
945{
946 struct smbd_smb2_create_state *state = NULL;
947 struct smbd_smb2_request *smb2req;
948
949 smb2req = find_open_smb2req(sconn, mid);
950
951 if (!smb2req) {
952 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
953 (unsigned long long)mid));
954 return false;
955 }
956 if (!smb2req->subreq) {
957 return false;
958 }
959 if (!tevent_req_is_in_progress(smb2req->subreq)) {
960 return false;
961 }
962 state = tevent_req_data(smb2req->subreq,
963 struct smbd_smb2_create_state);
964 if (!state) {
965 return false;
966 }
967 /* It's not in progress if there's no timeout event. */
968 if (!state->open_was_deferred) {
969 return false;
970 }
971
972 DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
973 (unsigned long long)mid));
974
975 return true;
976}
977
978static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
979 uint64_t mid)
980{
981 struct smbd_smb2_create_state *state = NULL;
982
983 if (!smb2req->subreq) {
984 return;
985 }
986 if (!tevent_req_is_in_progress(smb2req->subreq)) {
987 return;
988 }
989 state = tevent_req_data(smb2req->subreq,
990 struct smbd_smb2_create_state);
991 if (!state) {
992 return;
993 }
994
995 DEBUG(10,("remove_deferred_open_message_smb2_internal: "
996 "mid %llu\n",
997 (unsigned long long)mid ));
998
999 state->open_was_deferred = false;
1000 /* Ensure we don't have any outstanding timer event. */
1001 TALLOC_FREE(state->te);
1002 /* Ensure we don't have any outstanding immediate event. */
1003 TALLOC_FREE(state->im);
1004}
1005
1006void remove_deferred_open_message_smb2(
1007 struct smbd_server_connection *sconn, uint64_t mid)
1008{
1009 struct smbd_smb2_request *smb2req;
1010
1011 smb2req = find_open_smb2req(sconn, mid);
1012
1013 if (!smb2req) {
1014 DEBUG(10,("remove_deferred_open_message_smb2: "
1015 "can't find mid %llu\n",
1016 (unsigned long long)mid ));
1017 return;
1018 }
1019 remove_deferred_open_message_smb2_internal(smb2req, mid);
1020}
1021
1022static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1023 struct tevent_immediate *im,
1024 void *private_data)
1025{
1026 struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1027 struct smbd_smb2_request);
1028 struct smbd_server_connection *sconn = smb2req->sconn;
1029 uint64_t mid = get_mid_from_smb2req(smb2req);
1030 NTSTATUS status;
1031
1032 DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1033 "re-dispatching mid %llu\n",
1034 (unsigned long long)mid ));
1035
1036 status = smbd_smb2_request_dispatch(smb2req);
1037 if (!NT_STATUS_IS_OK(status)) {
1038 smbd_server_connection_terminate(sconn, nt_errstr(status));
1039 return;
1040 }
1041}
1042
1043void schedule_deferred_open_message_smb2(
1044 struct smbd_server_connection *sconn, uint64_t mid)
1045{
1046 struct smbd_smb2_create_state *state = NULL;
1047 struct smbd_smb2_request *smb2req;
1048
1049 smb2req = find_open_smb2req(sconn, mid);
1050
1051 if (!smb2req) {
1052 DEBUG(10,("schedule_deferred_open_message_smb2: "
1053 "can't find mid %llu\n",
1054 (unsigned long long)mid ));
1055 return;
1056 }
1057 if (!smb2req->subreq) {
1058 return;
1059 }
1060 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1061 return;
1062 }
1063 state = tevent_req_data(smb2req->subreq,
1064 struct smbd_smb2_create_state);
1065 if (!state) {
1066 return;
1067 }
1068
1069 /* Ensure we don't have any outstanding timer event. */
1070 TALLOC_FREE(state->te);
1071 /* Ensure we don't have any outstanding immediate event. */
1072 TALLOC_FREE(state->im);
1073
1074 /*
1075 * This is subtle. We must null out the callback
1076 * before resheduling, else the first call to
1077 * tevent_req_nterror() causes the _receive()
1078 * function to be called, this causing tevent_req_post()
1079 * to crash.
1080 */
1081 tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1082
1083 state->im = tevent_create_immediate(smb2req);
1084 if (!state->im) {
1085 smbd_server_connection_terminate(smb2req->sconn,
1086 nt_errstr(NT_STATUS_NO_MEMORY));
1087 }
1088
1089 DEBUG(10,("schedule_deferred_open_message_smb2: "
1090 "re-processing mid %llu\n",
1091 (unsigned long long)mid ));
1092
1093 tevent_schedule_immediate(state->im,
1094 smb2req->sconn->smb2.event_ctx,
1095 smbd_smb2_create_request_dispatch_immediate,
1096 smb2req);
1097}
1098
1099/*********************************************************
1100 Re-process this call.
1101*********************************************************/
1102
1103static void smb2_deferred_open_timer(struct event_context *ev,
1104 struct timed_event *te,
1105 struct timeval _tval,
1106 void *private_data)
1107{
1108 NTSTATUS status;
1109 struct smbd_smb2_create_state *state = NULL;
1110 struct smbd_smb2_request *smb2req = talloc_get_type(private_data,
1111 struct smbd_smb2_request);
1112
1113 DEBUG(10,("smb2_deferred_open_timer: [idx=%d], %s\n",
1114 smb2req->current_idx,
1115 tevent_req_default_print(smb2req->subreq, talloc_tos()) ));
1116
1117 state = tevent_req_data(smb2req->subreq,
1118 struct smbd_smb2_create_state);
1119 if (!state) {
1120 return;
1121 }
1122 /*
1123 * Null this out, don't talloc_free. It will
1124 * be talloc_free'd by the tevent library when
1125 * this returns.
1126 */
1127 state->te = NULL;
1128 /* Ensure we don't have any outstanding immediate event. */
1129 TALLOC_FREE(state->im);
1130
1131 /*
1132 * This is subtle. We must null out the callback
1133 * before resheduling, else the first call to
1134 * tevent_req_nterror() causes the _receive()
1135 * function to be called, this causing tevent_req_post()
1136 * to crash.
1137 */
1138 tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1139
1140 status = smbd_smb2_request_dispatch(smb2req);
1141
1142 if (!NT_STATUS_IS_OK(status)) {
1143 smbd_server_connection_terminate(smb2req->sconn,
1144 nt_errstr(status));
1145 }
1146}
1147
1148static bool smbd_smb2_create_cancel(struct tevent_req *req)
1149{
1150 struct smbd_smb2_request *smb2req = NULL;
1151 struct smbd_smb2_create_state *state = tevent_req_data(req,
1152 struct smbd_smb2_create_state);
1153 uint64_t mid;
1154
1155 if (!state) {
1156 return false;
1157 }
1158
1159 if (!state->smb2req) {
1160 return false;
1161 }
1162
1163 smb2req = state->smb2req;
1164 mid = get_mid_from_smb2req(smb2req);
1165
1166 remove_deferred_open_entry(state->id, mid,
1167 sconn_server_id(smb2req->sconn));
1168 remove_deferred_open_message_smb2_internal(smb2req, mid);
1169 smb2req->cancelled = true;
1170
1171 tevent_req_done(req);
1172 return true;
1173}
1174
1175bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1176 struct timeval request_time,
1177 struct timeval timeout,
1178 struct file_id id,
1179 char *private_data,
1180 size_t priv_len)
1181{
1182 struct tevent_req *req = NULL;
1183 struct smbd_smb2_create_state *state = NULL;
1184 struct timeval end_time;
1185
1186 if (!smb2req) {
1187 return false;
1188 }
1189 req = smb2req->subreq;
1190 if (!req) {
1191 return false;
1192 }
1193 state = tevent_req_data(req, struct smbd_smb2_create_state);
1194 if (!state) {
1195 return false;
1196 }
1197 state->id = id;
1198 state->request_time = request_time;
1199 state->private_data = data_blob_talloc(state, private_data,
1200 priv_len);
1201 if (!state->private_data.data) {
1202 return false;
1203 }
1204
1205#if 1
1206 /* Boo - turns out this isn't what W2K8R2
1207 does. It actually sends the STATUS_PENDING
1208 message followed by the STATUS_SHARING_VIOLATION
1209 message. Surely this means that all open
1210 calls (even on directories) will potentially
1211 fail in a chain.... ? And I've seen directory
1212 opens as the start of a chain. JRA.
1213
1214 Update: 19th May 2010. Talking with Microsoft
1215 engineers at the plugfest this is a bug in
1216 Windows. Re-enable this code.
1217 */
1218 /*
1219 * More subtlety. To match W2K8R2 don't
1220 * send a "gone async" message if it's simply
1221 * a STATUS_SHARING_VIOLATION (short) wait, not
1222 * an oplock break wait. We do this by prematurely
1223 * setting smb2req->async flag.
1224 */
1225 if (timeout.tv_sec < 2) {
1226 DEBUG(10,("push_deferred_open_message_smb2: "
1227 "short timer wait (usec = %u). "
1228 "Don't send async message.\n",
1229 (unsigned int)timeout.tv_usec ));
1230 smb2req->async = true;
1231 }
1232#endif
1233
1234 /* Re-schedule us to retry on timer expiry. */
1235 end_time = timeval_sum(&request_time, &timeout);
1236
1237 DEBUG(10,("push_deferred_open_message_smb2: "
1238 "timeout at %s\n",
1239 timeval_string(talloc_tos(),
1240 &end_time,
1241 true) ));
1242
1243 state->open_was_deferred = true;
1244 state->te = event_add_timed(smb2req->sconn->smb2.event_ctx,
1245 state,
1246 end_time,
1247 smb2_deferred_open_timer,
1248 smb2req);
1249 if (!state->te) {
1250 return false;
1251 }
1252
1253 /* allow this request to be canceled */
1254 tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1255
1256 return true;
1257}
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