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s4 dns: Move record lookup to dns_utils.c
[Samba/gebeck_regimport.git] / source3 / smbd / smb2_create.c
blob6218592e3e7dc01231a3024adf865f627e8c530b
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 DEBUG(10,("smbd_smb2_create: name[%s]\n",
462 in_name));
463 } else {
464 /* Re-entrant create call. */
465 req = smb2req->subreq;
466 state = tevent_req_data(req,
467 struct smbd_smb2_create_state);
468 smb1req = state->smb1req;
469 DEBUG(10,("smbd_smb2_create_send: reentrant for file %s\n",
470 in_name ));
471 }
472
473 if (IS_IPC(smb1req->conn)) {
474 const char *pipe_name = in_name;
475
476 if (!lp_nt_pipe_support()) {
477 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
478 return tevent_req_post(req, ev);
479 }
480
481 /* Strip \\ off the name. */
482 if (pipe_name[0] == '\\') {
483 pipe_name++;
484 }
485
486 status = open_np_file(smb1req, pipe_name, &result);
487 if (!NT_STATUS_IS_OK(status)) {
488 tevent_req_nterror(req, status);
489 return tevent_req_post(req, ev);
490 }
491 info = FILE_WAS_OPENED;
492 } else if (CAN_PRINT(smb1req->conn)) {
493 status = file_new(smb1req, smb1req->conn, &result);
494 if(!NT_STATUS_IS_OK(status)) {
495 tevent_req_nterror(req, status);
496 return tevent_req_post(req, ev);
497 }
498
499 status = print_spool_open(result, in_name,
500 smb1req->vuid);
501 if (!NT_STATUS_IS_OK(status)) {
502 file_free(smb1req, result);
503 tevent_req_nterror(req, status);
504 return tevent_req_post(req, ev);
505 }
506 info = FILE_WAS_CREATED;
507 } else {
508 char *fname;
509 struct smb_filename *smb_fname = NULL;
510 struct smb2_create_blob *exta = NULL;
511 struct ea_list *ea_list = NULL;
512 struct smb2_create_blob *mxac = NULL;
513 NTTIME max_access_time = 0;
514 struct smb2_create_blob *secd = NULL;
515 struct security_descriptor *sec_desc = NULL;
516 struct smb2_create_blob *dhnq = NULL;
517 struct smb2_create_blob *dhnc = NULL;
518 struct smb2_create_blob *alsi = NULL;
519 uint64_t allocation_size = 0;
520 struct smb2_create_blob *twrp = NULL;
521 struct smb2_create_blob *qfid = NULL;
522
523 exta = smb2_create_blob_find(&in_context_blobs,
524 SMB2_CREATE_TAG_EXTA);
525 mxac = smb2_create_blob_find(&in_context_blobs,
526 SMB2_CREATE_TAG_MXAC);
527 secd = smb2_create_blob_find(&in_context_blobs,
528 SMB2_CREATE_TAG_SECD);
529 dhnq = smb2_create_blob_find(&in_context_blobs,
530 SMB2_CREATE_TAG_DHNQ);
531 dhnc = smb2_create_blob_find(&in_context_blobs,
532 SMB2_CREATE_TAG_DHNC);
533 alsi = smb2_create_blob_find(&in_context_blobs,
534 SMB2_CREATE_TAG_ALSI);
535 twrp = smb2_create_blob_find(&in_context_blobs,
536 SMB2_CREATE_TAG_TWRP);
537 qfid = smb2_create_blob_find(&in_context_blobs,
538 SMB2_CREATE_TAG_QFID);
539
540 fname = talloc_strdup(state, in_name);
541 if (tevent_req_nomem(fname, req)) {
542 return tevent_req_post(req, ev);
543 }
544
545 if (exta) {
546 if (dhnc) {
547 tevent_req_nterror(req,NT_STATUS_OBJECT_NAME_NOT_FOUND);
548 return tevent_req_post(req, ev);
549 }
550
551 ea_list = read_nttrans_ea_list(mem_ctx,
552 (const char *)exta->data.data, exta->data.length);
553 if (!ea_list) {
554 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
555 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
556 return tevent_req_post(req, ev);
557 }
558 }
559
560 if (mxac) {
561 if (dhnc) {
562 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
563 return tevent_req_post(req, ev);
564 }
565
566 if (mxac->data.length == 0) {
567 max_access_time = 0;
568 } else if (mxac->data.length == 8) {
569 max_access_time = BVAL(mxac->data.data, 0);
570 } else {
571 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
572 return tevent_req_post(req, ev);
573 }
574 }
575
576 if (secd) {
577 enum ndr_err_code ndr_err;
578
579 if (dhnc) {
580 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
581 return tevent_req_post(req, ev);
582 }
583
584 sec_desc = talloc_zero(state, struct security_descriptor);
585 if (tevent_req_nomem(sec_desc, req)) {
586 return tevent_req_post(req, ev);
587 }
588
589 ndr_err = ndr_pull_struct_blob(&secd->data,
590 sec_desc, sec_desc,
591 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
592 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
593 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
594 ndr_errstr(ndr_err)));
595 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
596 return tevent_req_post(req, ev);
597 }
598 }
599
600 if (dhnq) {
601 if (dhnc) {
602 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
603 return tevent_req_post(req, ev);
604 }
605
606 if (dhnq->data.length != 16) {
607 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
608 return tevent_req_post(req, ev);
609 }
610 /*
611 * we don't support durable handles yet
612 * and have to ignore this
613 */
614 }
615
616 if (dhnc) {
617 if (dhnc->data.length != 16) {
618 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
619 return tevent_req_post(req, ev);
620 }
621 /* we don't support durable handles yet */
622 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
623 return tevent_req_post(req, ev);
624 }
625
626 if (alsi) {
627 if (dhnc) {
628 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
629 return tevent_req_post(req, ev);
630 }
631
632 if (alsi->data.length != 8) {
633 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
634 return tevent_req_post(req, ev);
635 }
636 allocation_size = BVAL(alsi->data.data, 0);
637 }
638
639 if (twrp) {
640 NTTIME nttime;
641 time_t t;
642 struct tm *tm;
643
644 if (dhnc) {
645 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
646 return tevent_req_post(req, ev);
647 }
648
649 if (twrp->data.length != 8) {
650 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
651 return tevent_req_post(req, ev);
652 }
653
654 nttime = BVAL(twrp->data.data, 0);
655 t = nt_time_to_unix(nttime);
656 tm = gmtime(&t);
657
658 TALLOC_FREE(fname);
659 fname = talloc_asprintf(state,
660 "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
661 tm->tm_year + 1900,
662 tm->tm_mon + 1,
663 tm->tm_mday,
664 tm->tm_hour,
665 tm->tm_min,
666 tm->tm_sec,
667 in_name);
668 if (tevent_req_nomem(fname, req)) {
669 return tevent_req_post(req, ev);
670 }
671 }
672
673 if (qfid) {
674 if (qfid->data.length != 0) {
675 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
676 return tevent_req_post(req, ev);
677 }
678 }
679
680 /* these are ignored for SMB2 */
681 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
682 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
683
684 /*
685 * For a DFS path the function parse_dfs_path()
686 * will do the path processing.
687 */
688
689 if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
690 /* convert '\\' into '/' */
691 status = check_path_syntax(fname);
692 if (!NT_STATUS_IS_OK(status)) {
693 tevent_req_nterror(req, status);
694 return tevent_req_post(req, ev);
695 }
696 }
697
698 status = filename_convert(req,
699 smb1req->conn,
700 smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
701 fname,
702 0,
703 NULL,
704 &smb_fname);
705 if (!NT_STATUS_IS_OK(status)) {
706 tevent_req_nterror(req, status);
707 return tevent_req_post(req, ev);
708 }
709
710 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
711
712 status = SMB_VFS_CREATE_FILE(smb1req->conn,
713 smb1req,
714 0, /* root_dir_fid */
715 smb_fname,
716 in_desired_access,
717 in_share_access,
718 in_create_disposition,
719 in_create_options,
720 in_file_attributes,
721 map_smb2_oplock_levels_to_samba(requested_oplock_level),
722 allocation_size,
723 0, /* private_flags */
724 sec_desc,
725 ea_list,
726 &result,
727 &info);
728 if (!NT_STATUS_IS_OK(status)) {
729 if (open_was_deferred(smb1req->sconn, smb1req->mid)) {
730 return req;
731 }
732 tevent_req_nterror(req, status);
733 return tevent_req_post(req, ev);
734 }
735
736 if (mxac) {
737 NTTIME last_write_time;
738
739 unix_timespec_to_nt_time(&last_write_time,
740 result->fsp_name->st.st_ex_mtime);
741 if (last_write_time != max_access_time) {
742 uint8_t p[8];
743 uint32_t max_access_granted;
744 DATA_BLOB blob = data_blob_const(p, sizeof(p));
745
746 status = smbd_calculate_access_mask(smb1req->conn,
747 result->fsp_name,
748 /*
749 * at this stage
750 * it exists
751 */
752 true,
753 SEC_FLAG_MAXIMUM_ALLOWED,
754 &max_access_granted);
755
756 SIVAL(p, 0, NT_STATUS_V(status));
757 SIVAL(p, 4, max_access_granted);
758
759 status = smb2_create_blob_add(state,
760 &out_context_blobs,
761 SMB2_CREATE_TAG_MXAC,
762 blob);
763 if (!NT_STATUS_IS_OK(status)) {
764 tevent_req_nterror(req, status);
765 return tevent_req_post(req, ev);
766 }
767 }
768 }
769
770 if (qfid) {
771 uint8_t p[32];
772 uint64_t file_index = get_FileIndex(result->conn,
773 &result->fsp_name->st);
774 DATA_BLOB blob = data_blob_const(p, sizeof(p));
775
776 ZERO_STRUCT(p);
777
778 /* From conversations with Microsoft engineers at
779 the MS plugfest. The first 8 bytes are the "volume index"
780 == inode, the second 8 bytes are the "volume id",
781 == dev. This will be updated in the SMB2 doc. */
782 SBVAL(p, 0, file_index);
783 SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
784
785 status = smb2_create_blob_add(state, &out_context_blobs,
786 SMB2_CREATE_TAG_QFID,
787 blob);
788 if (!NT_STATUS_IS_OK(status)) {
789 tevent_req_nterror(req, status);
790 return tevent_req_post(req, ev);
791 }
792 }
793 }
794
795 smb2req->compat_chain_fsp = smb1req->chain_fsp;
796
797 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat_conn))) {
798 state->out_oplock_level = in_oplock_level;
799 } else {
800 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
801 }
802
803 if ((in_create_disposition == FILE_SUPERSEDE)
804 && (info == FILE_WAS_OVERWRITTEN)) {
805 state->out_create_action = FILE_WAS_SUPERSEDED;
806 } else {
807 state->out_create_action = info;
808 }
809 state->out_file_attributes = dos_mode(result->conn,
810 result->fsp_name);
811 /* Deal with other possible opens having a modified
812 write time. JRA. */
813 ZERO_STRUCT(write_time_ts);
814 get_file_infos(result->file_id, 0, NULL, &write_time_ts);
815 if (!null_timespec(write_time_ts)) {
816 update_stat_ex_mtime(&result->fsp_name->st, write_time_ts);
817 }
818
819 unix_timespec_to_nt_time(&state->out_creation_time,
820 get_create_timespec(smb1req->conn, result,
821 result->fsp_name));
822 unix_timespec_to_nt_time(&state->out_last_access_time,
823 result->fsp_name->st.st_ex_atime);
824 unix_timespec_to_nt_time(&state->out_last_write_time,
825 result->fsp_name->st.st_ex_mtime);
826 unix_timespec_to_nt_time(&state->out_change_time,
827 get_change_timespec(smb1req->conn, result,
828 result->fsp_name));
829 state->out_allocation_size =
830 SMB_VFS_GET_ALLOC_SIZE(smb1req->conn, result,
831 &(result->fsp_name->st));
832 state->out_end_of_file = result->fsp_name->st.st_ex_size;
833 if (state->out_file_attributes == 0) {
834 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
835 }
836 state->out_file_id_persistent = result->fnum;
837 state->out_file_id_volatile = result->fnum;
838 state->out_context_blobs = out_context_blobs;
839
840 tevent_req_done(req);
841 return tevent_req_post(req, ev);
842 }
843
844 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
845 TALLOC_CTX *mem_ctx,
846 uint8_t *out_oplock_level,
847 uint32_t *out_create_action,
848 NTTIME *out_creation_time,
849 NTTIME *out_last_access_time,
850 NTTIME *out_last_write_time,
851 NTTIME *out_change_time,
852 uint64_t *out_allocation_size,
853 uint64_t *out_end_of_file,
854 uint32_t *out_file_attributes,
855 uint64_t *out_file_id_persistent,
856 uint64_t *out_file_id_volatile,
857 struct smb2_create_blobs *out_context_blobs)
858 {
859 NTSTATUS status;
860 struct smbd_smb2_create_state *state = tevent_req_data(req,
861 struct smbd_smb2_create_state);
862
863 if (tevent_req_is_nterror(req, &status)) {
864 tevent_req_received(req);
865 return status;
866 }
867
868 *out_oplock_level = state->out_oplock_level;
869 *out_create_action = state->out_create_action;
870 *out_creation_time = state->out_creation_time;
871 *out_last_access_time = state->out_last_access_time;
872 *out_last_write_time = state->out_last_write_time;
873 *out_change_time = state->out_change_time;
874 *out_allocation_size = state->out_allocation_size;
875 *out_end_of_file = state->out_end_of_file;
876 *out_file_attributes = state->out_file_attributes;
877 *out_file_id_persistent = state->out_file_id_persistent;
878 *out_file_id_volatile = state->out_file_id_volatile;
879 *out_context_blobs = state->out_context_blobs;
880
881 talloc_steal(mem_ctx, state->out_context_blobs.blobs);
882
883 tevent_req_received(req);
884 return NT_STATUS_OK;
885 }
886
887 /*********************************************************
888 Code for dealing with deferred opens.
889 *********************************************************/
890
891 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
892 struct timeval *p_request_time,
893 void **pp_state)
894 {
895 struct smbd_smb2_create_state *state = NULL;
896 struct tevent_req *req = NULL;
897
898 if (!smb2req) {
899 return false;
900 }
901 if (smb2req->subreq == NULL) {
902 return false;
903 }
904 req = smb2req->subreq;
905 if (!req) {
906 return false;
907 }
908 state = tevent_req_data(req, struct smbd_smb2_create_state);
909 if (!state) {
910 return false;
911 }
912 if (p_request_time) {
913 *p_request_time = state->request_time;
914 }
915 if (pp_state) {
916 *pp_state = (void *)state->private_data.data;
917 }
918 return true;
919 }
920
921 /*********************************************************
922 Re-process this call early - requested by message or
923 close.
924 *********************************************************/
925
926 static struct smbd_smb2_request *find_open_smb2req(
927 struct smbd_server_connection *sconn, uint64_t mid)
928 {
929 struct smbd_smb2_request *smb2req;
930
931 for (smb2req = sconn->smb2.requests; smb2req; smb2req = smb2req->next) {
932 uint64_t message_id;
933 if (smb2req->subreq == NULL) {
934 /* This message has been processed. */
935 continue;
936 }
937 if (!tevent_req_is_in_progress(smb2req->subreq)) {
938 /* This message has been processed. */
939 continue;
940 }
941 message_id = get_mid_from_smb2req(smb2req);
942 if (message_id == mid) {
943 return smb2req;
944 }
945 }
946 return NULL;
947 }
948
949 bool open_was_deferred_smb2(struct smbd_server_connection *sconn, uint64_t mid)
950 {
951 struct smbd_smb2_create_state *state = NULL;
952 struct smbd_smb2_request *smb2req;
953
954 smb2req = find_open_smb2req(sconn, mid);
955
956 if (!smb2req) {
957 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
958 (unsigned long long)mid));
959 return false;
960 }
961 if (!smb2req->subreq) {
962 return false;
963 }
964 if (!tevent_req_is_in_progress(smb2req->subreq)) {
965 return false;
966 }
967 state = tevent_req_data(smb2req->subreq,
968 struct smbd_smb2_create_state);
969 if (!state) {
970 return false;
971 }
972 /* It's not in progress if there's no timeout event. */
973 if (!state->te) {
974 return false;
975 }
976
977 DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
978 (unsigned long long)mid));
979
980 return true;
981 }
982
983 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
984 uint64_t mid)
985 {
986 struct smbd_smb2_create_state *state = NULL;
987
988 if (!smb2req->subreq) {
989 return;
990 }
991 if (!tevent_req_is_in_progress(smb2req->subreq)) {
992 return;
993 }
994 state = tevent_req_data(smb2req->subreq,
995 struct smbd_smb2_create_state);
996 if (!state) {
997 return;
998 }
999
1000 DEBUG(10,("remove_deferred_open_message_smb2_internal: "
1001 "mid %llu\n",
1002 (unsigned long long)mid ));
1003
1004 /* Ensure we don't have any outstanding timer event. */
1005 TALLOC_FREE(state->te);
1006 /* Ensure we don't have any outstanding immediate event. */
1007 TALLOC_FREE(state->im);
1008 }
1009
1010 void remove_deferred_open_message_smb2(
1011 struct smbd_server_connection *sconn, uint64_t mid)
1012 {
1013 struct smbd_smb2_request *smb2req;
1014
1015 smb2req = find_open_smb2req(sconn, mid);
1016
1017 if (!smb2req) {
1018 DEBUG(10,("remove_deferred_open_message_smb2: "
1019 "can't find mid %llu\n",
1020 (unsigned long long)mid ));
1021 return;
1022 }
1023 remove_deferred_open_message_smb2_internal(smb2req, mid);
1024 }
1025
1026 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1027 struct tevent_immediate *im,
1028 void *private_data)
1029 {
1030 struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1031 struct smbd_smb2_request);
1032 struct smbd_server_connection *sconn = smb2req->sconn;
1033 uint64_t mid = get_mid_from_smb2req(smb2req);
1034 NTSTATUS status;
1035
1036 DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1037 "re-dispatching mid %llu\n",
1038 (unsigned long long)mid ));
1039
1040 status = smbd_smb2_request_dispatch(smb2req);
1041 if (!NT_STATUS_IS_OK(status)) {
1042 smbd_server_connection_terminate(sconn, nt_errstr(status));
1043 return;
1044 }
1045 }
1046
1047 void schedule_deferred_open_message_smb2(
1048 struct smbd_server_connection *sconn, uint64_t mid)
1049 {
1050 struct smbd_smb2_create_state *state = NULL;
1051 struct smbd_smb2_request *smb2req;
1052
1053 smb2req = find_open_smb2req(sconn, mid);
1054
1055 if (!smb2req) {
1056 DEBUG(10,("schedule_deferred_open_message_smb2: "
1057 "can't find mid %llu\n",
1058 (unsigned long long)mid ));
1059 return;
1060 }
1061 if (!smb2req->subreq) {
1062 return;
1063 }
1064 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1065 return;
1066 }
1067 state = tevent_req_data(smb2req->subreq,
1068 struct smbd_smb2_create_state);
1069 if (!state) {
1070 return;
1071 }
1072
1073 /* Ensure we don't have any outstanding timer event. */
1074 TALLOC_FREE(state->te);
1075 /* Ensure we don't have any outstanding immediate event. */
1076 TALLOC_FREE(state->im);
1077
1078 /*
1079 * This is subtle. We must null out the callback
1080 * before resheduling, else the first call to
1081 * tevent_req_nterror() causes the _receive()
1082 * function to be called, this causing tevent_req_post()
1083 * to crash.
1084 */
1085 tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1086
1087 state->im = tevent_create_immediate(smb2req);
1088 if (!state->im) {
1089 smbd_server_connection_terminate(smb2req->sconn,
1090 nt_errstr(NT_STATUS_NO_MEMORY));
1091 return;
1092 }
1093
1094 DEBUG(10,("schedule_deferred_open_message_smb2: "
1095 "re-processing mid %llu\n",
1096 (unsigned long long)mid ));
1097
1098 tevent_schedule_immediate(state->im,
1099 smb2req->sconn->ev_ctx,
1100 smbd_smb2_create_request_dispatch_immediate,
1101 smb2req);
1102 }
1103
1104 /*********************************************************
1105 Re-process this call.
1106 *********************************************************/
1107
1108 static void smb2_deferred_open_timer(struct event_context *ev,
1109 struct timed_event *te,
1110 struct timeval _tval,
1111 void *private_data)
1112 {
1113 NTSTATUS status;
1114 struct smbd_smb2_create_state *state = NULL;
1115 struct smbd_smb2_request *smb2req = talloc_get_type(private_data,
1116 struct smbd_smb2_request);
1117
1118 DEBUG(10,("smb2_deferred_open_timer: [idx=%d], %s\n",
1119 smb2req->current_idx,
1120 tevent_req_default_print(smb2req->subreq, talloc_tos()) ));
1121
1122 state = tevent_req_data(smb2req->subreq,
1123 struct smbd_smb2_create_state);
1124 if (!state) {
1125 return;
1126 }
1127 /*
1128 * Null this out, don't talloc_free. It will
1129 * be talloc_free'd by the tevent library when
1130 * this returns.
1131 */
1132 state->te = NULL;
1133 /* Ensure we don't have any outstanding immediate event. */
1134 TALLOC_FREE(state->im);
1135
1136 /*
1137 * This is subtle. We must null out the callback
1138 * before resheduling, else the first call to
1139 * tevent_req_nterror() causes the _receive()
1140 * function to be called, this causing tevent_req_post()
1141 * to crash.
1142 */
1143 tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1144
1145 status = smbd_smb2_request_dispatch(smb2req);
1146
1147 if (!NT_STATUS_IS_OK(status)) {
1148 smbd_server_connection_terminate(smb2req->sconn,
1149 nt_errstr(status));
1150 }
1151 }
1152
1153 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1154 {
1155 struct smbd_smb2_request *smb2req = NULL;
1156 struct smbd_smb2_create_state *state = tevent_req_data(req,
1157 struct smbd_smb2_create_state);
1158 uint64_t mid;
1159
1160 if (!state) {
1161 return false;
1162 }
1163
1164 if (!state->smb2req) {
1165 return false;
1166 }
1167
1168 smb2req = state->smb2req;
1169 mid = get_mid_from_smb2req(smb2req);
1170
1171 remove_deferred_open_entry(state->id, mid,
1172 messaging_server_id(smb2req->sconn->msg_ctx));
1173 remove_deferred_open_message_smb2_internal(smb2req, mid);
1174 smb2req->cancelled = true;
1175
1176 tevent_req_done(req);
1177 return true;
1178 }
1179
1180 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1181 struct timeval request_time,
1182 struct timeval timeout,
1183 struct file_id id,
1184 char *private_data,
1185 size_t priv_len)
1186 {
1187 struct tevent_req *req = NULL;
1188 struct smbd_smb2_create_state *state = NULL;
1189 struct timeval end_time;
1190
1191 if (!smb2req) {
1192 return false;
1193 }
1194 req = smb2req->subreq;
1195 if (!req) {
1196 return false;
1197 }
1198 state = tevent_req_data(req, struct smbd_smb2_create_state);
1199 if (!state) {
1200 return false;
1201 }
1202 state->id = id;
1203 state->request_time = request_time;
1204 state->private_data = data_blob_talloc(state, private_data,
1205 priv_len);
1206 if (!state->private_data.data) {
1207 return false;
1208 }
1209
1210 /* Re-schedule us to retry on timer expiry. */
1211 end_time = timeval_sum(&request_time, &timeout);
1212
1213 DEBUG(10,("push_deferred_open_message_smb2: "
1214 "timeout at %s\n",
1215 timeval_string(talloc_tos(),
1216 &end_time,
1217 true) ));
1218
1219 state->te = tevent_add_timer(smb2req->sconn->ev_ctx,
1220 state,
1221 end_time,
1222 smb2_deferred_open_timer,
1223 smb2req);
1224 if (!state->te) {
1225 return false;
1226 }
1227
1228 /* allow this request to be canceled */
1229 tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1230
1231 return true;
1232 }
reg import