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lib/util: Remove unused sys_select_signal()
[Samba/gebeck_regimport.git] / source3 / smbd / smb2_create.c
blobc637adbb619139d5571474658cc3edbf2d99930c
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 int i = smb2req->current_idx;
104 uint8_t in_oplock_level;
105 uint32_t in_impersonation_level;
106 uint32_t in_desired_access;
107 uint32_t in_file_attributes;
108 uint32_t in_share_access;
109 uint32_t in_create_disposition;
110 uint32_t in_create_options;
111 uint16_t in_name_offset;
112 uint16_t in_name_length;
113 DATA_BLOB in_name_buffer;
114 char *in_name_string;
115 size_t in_name_string_size;
116 uint32_t name_offset = 0;
117 uint32_t name_available_length = 0;
118 uint32_t in_context_offset;
119 uint32_t in_context_length;
120 DATA_BLOB in_context_buffer;
121 struct smb2_create_blobs in_context_blobs;
122 uint32_t context_offset = 0;
123 uint32_t context_available_length = 0;
124 uint32_t dyn_offset;
125 NTSTATUS status;
126 bool ok;
127 struct tevent_req *tsubreq;
128
129 status = smbd_smb2_request_verify_sizes(smb2req, 0x39);
130 if (!NT_STATUS_IS_OK(status)) {
131 return smbd_smb2_request_error(smb2req, status);
132 }
133 inbody = (const uint8_t *)smb2req->in.vector[i+1].iov_base;
134
135 in_oplock_level = CVAL(inbody, 0x03);
136 in_impersonation_level = IVAL(inbody, 0x04);
137 in_desired_access = IVAL(inbody, 0x18);
138 in_file_attributes = IVAL(inbody, 0x1C);
139 in_share_access = IVAL(inbody, 0x20);
140 in_create_disposition = IVAL(inbody, 0x24);
141 in_create_options = IVAL(inbody, 0x28);
142 in_name_offset = SVAL(inbody, 0x2C);
143 in_name_length = SVAL(inbody, 0x2E);
144 in_context_offset = IVAL(inbody, 0x30);
145 in_context_length = IVAL(inbody, 0x34);
146
147 /*
148 * First check if the dynamic name and context buffers
149 * are correctly specified.
150 *
151 * Note: That we don't check if the name and context buffers
152 * overlap
153 */
154
155 dyn_offset = SMB2_HDR_BODY + smb2req->in.vector[i+1].iov_len;
156
157 if (in_name_offset == 0 && in_name_length == 0) {
158 /* This is ok */
159 name_offset = 0;
160 } else if (in_name_offset < dyn_offset) {
161 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
162 } else {
163 name_offset = in_name_offset - dyn_offset;
164 }
165
166 if (name_offset > smb2req->in.vector[i+2].iov_len) {
167 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
168 }
169
170 name_available_length = smb2req->in.vector[i+2].iov_len - name_offset;
171
172 if (in_name_length > name_available_length) {
173 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
174 }
175
176 in_name_buffer.data = (uint8_t *)smb2req->in.vector[i+2].iov_base +
177 name_offset;
178 in_name_buffer.length = in_name_length;
179
180 if (in_context_offset == 0 && in_context_length == 0) {
181 /* This is ok */
182 context_offset = 0;
183 } else if (in_context_offset < dyn_offset) {
184 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
185 } else {
186 context_offset = in_context_offset - dyn_offset;
187 }
188
189 if (context_offset > smb2req->in.vector[i+2].iov_len) {
190 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
191 }
192
193 context_available_length = smb2req->in.vector[i+2].iov_len - context_offset;
194
195 if (in_context_length > context_available_length) {
196 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
197 }
198
199 in_context_buffer.data = (uint8_t *)smb2req->in.vector[i+2].iov_base +
200 context_offset;
201 in_context_buffer.length = in_context_length;
202
203 /*
204 * Now interpret the name and context buffers
205 */
206
207 ok = convert_string_talloc(smb2req, CH_UTF16, CH_UNIX,
208 in_name_buffer.data,
209 in_name_buffer.length,
210 &in_name_string,
211 &in_name_string_size);
212 if (!ok) {
213 return smbd_smb2_request_error(smb2req, NT_STATUS_ILLEGAL_CHARACTER);
214 }
215
216 if (in_name_buffer.length == 0) {
217 in_name_string_size = 0;
218 }
219
220 if (strlen(in_name_string) != in_name_string_size) {
221 return smbd_smb2_request_error(smb2req, NT_STATUS_OBJECT_NAME_INVALID);
222 }
223
224 ZERO_STRUCT(in_context_blobs);
225 status = smb2_create_blob_parse(smb2req, in_context_buffer, &in_context_blobs);
226 if (!NT_STATUS_IS_OK(status)) {
227 return smbd_smb2_request_error(smb2req, status);
228 }
229
230 tsubreq = smbd_smb2_create_send(smb2req,
231 smb2req->sconn->ev_ctx,
232 smb2req,
233 in_oplock_level,
234 in_impersonation_level,
235 in_desired_access,
236 in_file_attributes,
237 in_share_access,
238 in_create_disposition,
239 in_create_options,
240 in_name_string,
241 in_context_blobs);
242 if (tsubreq == NULL) {
243 smb2req->subreq = NULL;
244 return smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
245 }
246 tevent_req_set_callback(tsubreq, smbd_smb2_request_create_done, smb2req);
247
248 /*
249 * For now we keep the logic that we do not send STATUS_PENDING
250 * for sharing violations, so we just wait 2 seconds.
251 *
252 * TODO: we need more tests for this.
253 */
254 return smbd_smb2_request_pending_queue(smb2req, tsubreq, 2000000);
255 }
256
257 static uint64_t get_mid_from_smb2req(struct smbd_smb2_request *smb2req)
258 {
259 uint8_t *reqhdr = (uint8_t *)smb2req->out.vector[smb2req->current_idx].iov_base;
260 return BVAL(reqhdr, SMB2_HDR_MESSAGE_ID);
261 }
262
263 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq)
264 {
265 struct smbd_smb2_request *smb2req = tevent_req_callback_data(tsubreq,
266 struct smbd_smb2_request);
267 int i = smb2req->current_idx;
268 uint8_t *outhdr;
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 outhdr = (uint8_t *)smb2req->out.vector[i].iov_base;
341
342 outbody = data_blob_talloc(smb2req->out.vector, NULL, 0x58);
343 if (outbody.data == NULL) {
344 error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
345 if (!NT_STATUS_IS_OK(error)) {
346 smbd_server_connection_terminate(smb2req->sconn,
347 nt_errstr(error));
348 return;
349 }
350 return;
351 }
352
353 SSVAL(outbody.data, 0x00, 0x58 + 1); /* struct size */
354 SCVAL(outbody.data, 0x02,
355 out_oplock_level); /* oplock level */
356 SCVAL(outbody.data, 0x03, 0); /* reserved */
357 SIVAL(outbody.data, 0x04,
358 out_create_action); /* create action */
359 SBVAL(outbody.data, 0x08,
360 out_creation_time); /* creation time */
361 SBVAL(outbody.data, 0x10,
362 out_last_access_time); /* last access time */
363 SBVAL(outbody.data, 0x18,
364 out_last_write_time); /* last write time */
365 SBVAL(outbody.data, 0x20,
366 out_change_time); /* change time */
367 SBVAL(outbody.data, 0x28,
368 out_allocation_size); /* allocation size */
369 SBVAL(outbody.data, 0x30,
370 out_end_of_file); /* end of file */
371 SIVAL(outbody.data, 0x38,
372 out_file_attributes); /* file attributes */
373 SIVAL(outbody.data, 0x3C, 0); /* reserved */
374 SBVAL(outbody.data, 0x40,
375 out_file_id_persistent); /* file id (persistent) */
376 SBVAL(outbody.data, 0x48,
377 out_file_id_volatile); /* file id (volatile) */
378 SIVAL(outbody.data, 0x50,
379 out_context_buffer_offset); /* create contexts offset */
380 SIVAL(outbody.data, 0x54,
381 out_context_buffer.length); /* create contexts length */
382
383 outdyn = out_context_buffer;
384
385 error = smbd_smb2_request_done(smb2req, outbody, &outdyn);
386 if (!NT_STATUS_IS_OK(error)) {
387 smbd_server_connection_terminate(smb2req->sconn,
388 nt_errstr(error));
389 return;
390 }
391 }
392
393 struct smbd_smb2_create_state {
394 struct smbd_smb2_request *smb2req;
395 struct smb_request *smb1req;
396 struct timed_event *te;
397 struct tevent_immediate *im;
398 struct timeval request_time;
399 struct file_id id;
400 DATA_BLOB private_data;
401 uint8_t out_oplock_level;
402 uint32_t out_create_action;
403 NTTIME out_creation_time;
404 NTTIME out_last_access_time;
405 NTTIME out_last_write_time;
406 NTTIME out_change_time;
407 uint64_t out_allocation_size;
408 uint64_t out_end_of_file;
409 uint32_t out_file_attributes;
410 uint64_t out_file_id_persistent;
411 uint64_t out_file_id_volatile;
412 struct smb2_create_blobs out_context_blobs;
413 };
414
415 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
416 struct tevent_context *ev,
417 struct smbd_smb2_request *smb2req,
418 uint8_t in_oplock_level,
419 uint32_t in_impersonation_level,
420 uint32_t in_desired_access,
421 uint32_t in_file_attributes,
422 uint32_t in_share_access,
423 uint32_t in_create_disposition,
424 uint32_t in_create_options,
425 const char *in_name,
426 struct smb2_create_blobs in_context_blobs)
427 {
428 struct tevent_req *req = NULL;
429 struct smbd_smb2_create_state *state = NULL;
430 NTSTATUS status;
431 struct smb_request *smb1req = NULL;
432 files_struct *result = NULL;
433 int info;
434 struct timespec write_time_ts;
435 struct smb2_create_blobs out_context_blobs;
436 int requested_oplock_level;
437
438 ZERO_STRUCT(out_context_blobs);
439
440 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat_conn))) {
441 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
442 } else {
443 requested_oplock_level = in_oplock_level;
444 }
445
446
447 if (smb2req->subreq == NULL) {
448 /* New create call. */
449 req = tevent_req_create(mem_ctx, &state,
450 struct smbd_smb2_create_state);
451 if (req == NULL) {
452 return NULL;
453 }
454 state->smb2req = smb2req;
455
456 smb1req = smbd_smb2_fake_smb_request(smb2req);
457 if (tevent_req_nomem(smb1req, req)) {
458 return tevent_req_post(req, ev);
459 }
460 state->smb1req = smb1req;
461 smb2req->subreq = req;
462 DEBUG(10,("smbd_smb2_create: name[%s]\n",
463 in_name));
464 } else {
465 /* Re-entrant create call. */
466 req = smb2req->subreq;
467 state = tevent_req_data(req,
468 struct smbd_smb2_create_state);
469 smb1req = state->smb1req;
470 DEBUG(10,("smbd_smb2_create_send: reentrant for file %s\n",
471 in_name ));
472 }
473
474 if (IS_IPC(smb1req->conn)) {
475 const char *pipe_name = in_name;
476
477 if (!lp_nt_pipe_support()) {
478 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
479 return tevent_req_post(req, ev);
480 }
481
482 /* Strip \\ off the name. */
483 if (pipe_name[0] == '\\') {
484 pipe_name++;
485 }
486
487 status = open_np_file(smb1req, pipe_name, &result);
488 if (!NT_STATUS_IS_OK(status)) {
489 tevent_req_nterror(req, status);
490 return tevent_req_post(req, ev);
491 }
492 info = FILE_WAS_OPENED;
493 } else if (CAN_PRINT(smb1req->conn)) {
494 status = file_new(smb1req, smb1req->conn, &result);
495 if(!NT_STATUS_IS_OK(status)) {
496 tevent_req_nterror(req, status);
497 return tevent_req_post(req, ev);
498 }
499
500 status = print_spool_open(result, in_name,
501 smb1req->vuid);
502 if (!NT_STATUS_IS_OK(status)) {
503 file_free(smb1req, result);
504 tevent_req_nterror(req, status);
505 return tevent_req_post(req, ev);
506 }
507 info = FILE_WAS_CREATED;
508 } else {
509 char *fname;
510 struct smb_filename *smb_fname = NULL;
511 struct smb2_create_blob *exta = NULL;
512 struct ea_list *ea_list = NULL;
513 struct smb2_create_blob *mxac = NULL;
514 NTTIME max_access_time = 0;
515 struct smb2_create_blob *secd = NULL;
516 struct security_descriptor *sec_desc = NULL;
517 struct smb2_create_blob *dhnq = NULL;
518 struct smb2_create_blob *dhnc = NULL;
519 struct smb2_create_blob *alsi = NULL;
520 uint64_t allocation_size = 0;
521 struct smb2_create_blob *twrp = NULL;
522 struct smb2_create_blob *qfid = NULL;
523
524 exta = smb2_create_blob_find(&in_context_blobs,
525 SMB2_CREATE_TAG_EXTA);
526 mxac = smb2_create_blob_find(&in_context_blobs,
527 SMB2_CREATE_TAG_MXAC);
528 secd = smb2_create_blob_find(&in_context_blobs,
529 SMB2_CREATE_TAG_SECD);
530 dhnq = smb2_create_blob_find(&in_context_blobs,
531 SMB2_CREATE_TAG_DHNQ);
532 dhnc = smb2_create_blob_find(&in_context_blobs,
533 SMB2_CREATE_TAG_DHNC);
534 alsi = smb2_create_blob_find(&in_context_blobs,
535 SMB2_CREATE_TAG_ALSI);
536 twrp = smb2_create_blob_find(&in_context_blobs,
537 SMB2_CREATE_TAG_TWRP);
538 qfid = smb2_create_blob_find(&in_context_blobs,
539 SMB2_CREATE_TAG_QFID);
540
541 fname = talloc_strdup(state, in_name);
542 if (tevent_req_nomem(fname, req)) {
543 return tevent_req_post(req, ev);
544 }
545
546 if (exta) {
547 if (dhnc) {
548 tevent_req_nterror(req,NT_STATUS_OBJECT_NAME_NOT_FOUND);
549 return tevent_req_post(req, ev);
550 }
551
552 ea_list = read_nttrans_ea_list(mem_ctx,
553 (const char *)exta->data.data, exta->data.length);
554 if (!ea_list) {
555 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
556 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
557 return tevent_req_post(req, ev);
558 }
559 }
560
561 if (mxac) {
562 if (dhnc) {
563 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
564 return tevent_req_post(req, ev);
565 }
566
567 if (mxac->data.length == 0) {
568 max_access_time = 0;
569 } else if (mxac->data.length == 8) {
570 max_access_time = BVAL(mxac->data.data, 0);
571 } else {
572 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
573 return tevent_req_post(req, ev);
574 }
575 }
576
577 if (secd) {
578 enum ndr_err_code ndr_err;
579
580 if (dhnc) {
581 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
582 return tevent_req_post(req, ev);
583 }
584
585 sec_desc = talloc_zero(state, struct security_descriptor);
586 if (tevent_req_nomem(sec_desc, req)) {
587 return tevent_req_post(req, ev);
588 }
589
590 ndr_err = ndr_pull_struct_blob(&secd->data,
591 sec_desc, sec_desc,
592 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
593 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
594 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
595 ndr_errstr(ndr_err)));
596 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
597 return tevent_req_post(req, ev);
598 }
599 }
600
601 if (dhnq) {
602 if (dhnc) {
603 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
604 return tevent_req_post(req, ev);
605 }
606
607 if (dhnq->data.length != 16) {
608 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
609 return tevent_req_post(req, ev);
610 }
611 /*
612 * we don't support durable handles yet
613 * and have to ignore this
614 */
615 }
616
617 if (dhnc) {
618 if (dhnc->data.length != 16) {
619 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
620 return tevent_req_post(req, ev);
621 }
622 /* we don't support durable handles yet */
623 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
624 return tevent_req_post(req, ev);
625 }
626
627 if (alsi) {
628 if (dhnc) {
629 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
630 return tevent_req_post(req, ev);
631 }
632
633 if (alsi->data.length != 8) {
634 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
635 return tevent_req_post(req, ev);
636 }
637 allocation_size = BVAL(alsi->data.data, 0);
638 }
639
640 if (twrp) {
641 NTTIME nttime;
642 time_t t;
643 struct tm *tm;
644
645 if (dhnc) {
646 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
647 return tevent_req_post(req, ev);
648 }
649
650 if (twrp->data.length != 8) {
651 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
652 return tevent_req_post(req, ev);
653 }
654
655 nttime = BVAL(twrp->data.data, 0);
656 t = nt_time_to_unix(nttime);
657 tm = gmtime(&t);
658
659 TALLOC_FREE(fname);
660 fname = talloc_asprintf(state,
661 "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
662 tm->tm_year + 1900,
663 tm->tm_mon + 1,
664 tm->tm_mday,
665 tm->tm_hour,
666 tm->tm_min,
667 tm->tm_sec,
668 in_name);
669 if (tevent_req_nomem(fname, req)) {
670 return tevent_req_post(req, ev);
671 }
672 }
673
674 if (qfid) {
675 if (qfid->data.length != 0) {
676 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
677 return tevent_req_post(req, ev);
678 }
679 }
680
681 /* these are ignored for SMB2 */
682 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
683 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
684
685 /*
686 * For a DFS path the function parse_dfs_path()
687 * will do the path processing.
688 */
689
690 if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
691 /* convert '\\' into '/' */
692 status = check_path_syntax(fname);
693 if (!NT_STATUS_IS_OK(status)) {
694 tevent_req_nterror(req, status);
695 return tevent_req_post(req, ev);
696 }
697 }
698
699 status = filename_convert(req,
700 smb1req->conn,
701 smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
702 fname,
703 0,
704 NULL,
705 &smb_fname);
706 if (!NT_STATUS_IS_OK(status)) {
707 tevent_req_nterror(req, status);
708 return tevent_req_post(req, ev);
709 }
710
711 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
712
713 status = SMB_VFS_CREATE_FILE(smb1req->conn,
714 smb1req,
715 0, /* root_dir_fid */
716 smb_fname,
717 in_desired_access,
718 in_share_access,
719 in_create_disposition,
720 in_create_options,
721 in_file_attributes,
722 map_smb2_oplock_levels_to_samba(requested_oplock_level),
723 allocation_size,
724 0, /* private_flags */
725 sec_desc,
726 ea_list,
727 &result,
728 &info);
729 if (!NT_STATUS_IS_OK(status)) {
730 if (open_was_deferred(smb1req->sconn, smb1req->mid)) {
731 return req;
732 }
733 tevent_req_nterror(req, status);
734 return tevent_req_post(req, ev);
735 }
736
737 if (mxac) {
738 NTTIME last_write_time;
739
740 unix_timespec_to_nt_time(&last_write_time,
741 result->fsp_name->st.st_ex_mtime);
742 if (last_write_time != max_access_time) {
743 uint8_t p[8];
744 uint32_t max_access_granted;
745 DATA_BLOB blob = data_blob_const(p, sizeof(p));
746
747 status = smbd_calculate_access_mask(smb1req->conn,
748 result->fsp_name,
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 = result->fnum;
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
840 static 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
887 bool 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 if (smb2req->async_te == NULL) {
898 return false;
899 }
900 req = smb2req->subreq;
901 if (!req) {
902 return false;
903 }
904 state = tevent_req_data(req, struct smbd_smb2_create_state);
905 if (!state) {
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
922 static 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
945 bool 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->te) {
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
979 static 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 /* 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
1006 void 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
1022 static 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
1043 void 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 return;
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->ev_ctx,
1096 smbd_smb2_create_request_dispatch_immediate,
1097 smb2req);
1098 }
1099
1100 /*********************************************************
1101 Re-process this call.
1102 *********************************************************/
1103
1104 static 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
1149 static 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 messaging_server_id(smb2req->sconn->msg_ctx));
1169 remove_deferred_open_message_smb2_internal(smb2req, mid);
1170 smb2req->cancelled = true;
1171
1172 tevent_req_done(req);
1173 return true;
1174 }
1175
1176 bool 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 /* Re-schedule us to retry on timer expiry. */
1207 end_time = timeval_sum(&request_time, &timeout);
1208
1209 DEBUG(10,("push_deferred_open_message_smb2: "
1210 "timeout at %s\n",
1211 timeval_string(talloc_tos(),
1212 &end_time,
1213 true) ));
1214
1215 state->te = tevent_add_timer(smb2req->sconn->ev_ctx,
1216 state,
1217 end_time,
1218 smb2_deferred_open_timer,
1219 smb2req);
1220 if (!state->te) {
1221 return false;
1222 }
1223
1224 /* allow this request to be canceled */
1225 tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1226
1227 return true;
1228 }
reg import