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socket_wrapper: fix compiler warnings
[Samba/gbeck.git] / source3 / smbd / smb2_create.c
blobb191b74fcccfae2c2bfc87d54f43c7e64ea124fb
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/globals.h"
25 #include "../libcli/smb/smb_common.h"
26 #include "../librpc/gen_ndr/ndr_security.h"
27
28 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level)
29 {
30 switch(in_oplock_level) {
31 case SMB2_OPLOCK_LEVEL_NONE:
32 return NO_OPLOCK;
33 case SMB2_OPLOCK_LEVEL_II:
34 return LEVEL_II_OPLOCK;
35 case SMB2_OPLOCK_LEVEL_EXCLUSIVE:
36 return EXCLUSIVE_OPLOCK;
37 case SMB2_OPLOCK_LEVEL_BATCH:
38 return BATCH_OPLOCK;
39 case SMB2_OPLOCK_LEVEL_LEASE:
40 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
41 "LEASE_OPLOCK_REQUESTED\n"));
42 return NO_OPLOCK;
43 default:
44 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
45 "unknown level %u\n",
46 (unsigned int)in_oplock_level));
47 return NO_OPLOCK;
48 }
49 }
50
51 static uint8_t map_samba_oplock_levels_to_smb2(int oplock_type)
52 {
53 if (BATCH_OPLOCK_TYPE(oplock_type)) {
54 return SMB2_OPLOCK_LEVEL_BATCH;
55 } else if (EXCLUSIVE_OPLOCK_TYPE(oplock_type)) {
56 return SMB2_OPLOCK_LEVEL_EXCLUSIVE;
57 } else if (oplock_type == LEVEL_II_OPLOCK) {
58 /*
59 * Don't use LEVEL_II_OPLOCK_TYPE here as
60 * this also includes FAKE_LEVEL_II_OPLOCKs
61 * which are internal only.
62 */
63 return SMB2_OPLOCK_LEVEL_II;
64 } else {
65 return SMB2_OPLOCK_LEVEL_NONE;
66 }
67 }
68
69 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
70 struct tevent_context *ev,
71 struct smbd_smb2_request *smb2req,
72 uint8_t in_oplock_level,
73 uint32_t in_impersonation_level,
74 uint32_t in_desired_access,
75 uint32_t in_file_attributes,
76 uint32_t in_share_access,
77 uint32_t in_create_disposition,
78 uint32_t in_create_options,
79 const char *in_name,
80 struct smb2_create_blobs in_context_blobs);
81 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
82 TALLOC_CTX *mem_ctx,
83 uint8_t *out_oplock_level,
84 uint32_t *out_create_action,
85 NTTIME *out_creation_time,
86 NTTIME *out_last_access_time,
87 NTTIME *out_last_write_time,
88 NTTIME *out_change_time,
89 uint64_t *out_allocation_size,
90 uint64_t *out_end_of_file,
91 uint32_t *out_file_attributes,
92 uint64_t *out_file_id_persistent,
93 uint64_t *out_file_id_volatile,
94 struct smb2_create_blobs *out_context_blobs);
95
96 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq);
97 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *smb2req)
98 {
99 const uint8_t *inbody;
100 int i = smb2req->current_idx;
101 size_t expected_body_size = 0x39;
102 size_t body_size;
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 if (smb2req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
129 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
130 }
131
132 inbody = (const uint8_t *)smb2req->in.vector[i+1].iov_base;
133
134 body_size = SVAL(inbody, 0x00);
135 if (body_size != expected_body_size) {
136 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
137 }
138
139 in_oplock_level = CVAL(inbody, 0x03);
140 in_impersonation_level = IVAL(inbody, 0x04);
141 in_desired_access = IVAL(inbody, 0x18);
142 in_file_attributes = IVAL(inbody, 0x1C);
143 in_share_access = IVAL(inbody, 0x20);
144 in_create_disposition = IVAL(inbody, 0x24);
145 in_create_options = IVAL(inbody, 0x28);
146 in_name_offset = SVAL(inbody, 0x2C);
147 in_name_length = SVAL(inbody, 0x2E);
148 in_context_offset = IVAL(inbody, 0x30);
149 in_context_length = IVAL(inbody, 0x34);
150
151 /*
152 * First check if the dynamic name and context buffers
153 * are correctly specified.
154 *
155 * Note: That we don't check if the name and context buffers
156 * overlap
157 */
158
159 dyn_offset = SMB2_HDR_BODY + (body_size & 0xFFFFFFFE);
160
161 if (in_name_offset == 0 && in_name_length == 0) {
162 /* This is ok */
163 name_offset = 0;
164 } else if (in_name_offset < dyn_offset) {
165 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
166 } else {
167 name_offset = in_name_offset - dyn_offset;
168 }
169
170 if (name_offset > smb2req->in.vector[i+2].iov_len) {
171 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
172 }
173
174 name_available_length = smb2req->in.vector[i+2].iov_len - name_offset;
175
176 if (in_name_length > name_available_length) {
177 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
178 }
179
180 in_name_buffer.data = (uint8_t *)smb2req->in.vector[i+2].iov_base +
181 name_offset;
182 in_name_buffer.length = in_name_length;
183
184 if (in_context_offset == 0 && in_context_length == 0) {
185 /* This is ok */
186 context_offset = 0;
187 } else if (in_context_offset < dyn_offset) {
188 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
189 } else {
190 context_offset = in_context_offset - dyn_offset;
191 }
192
193 if (context_offset > smb2req->in.vector[i+2].iov_len) {
194 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
195 }
196
197 context_available_length = smb2req->in.vector[i+2].iov_len - context_offset;
198
199 if (in_context_length > context_available_length) {
200 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
201 }
202
203 in_context_buffer.data = (uint8_t *)smb2req->in.vector[i+2].iov_base +
204 context_offset;
205 in_context_buffer.length = in_context_length;
206
207 /*
208 * Now interpret the name and context buffers
209 */
210
211 ok = convert_string_talloc(smb2req, CH_UTF16, CH_UNIX,
212 in_name_buffer.data,
213 in_name_buffer.length,
214 &in_name_string,
215 &in_name_string_size, false);
216 if (!ok) {
217 return smbd_smb2_request_error(smb2req, NT_STATUS_ILLEGAL_CHARACTER);
218 }
219
220 ZERO_STRUCT(in_context_blobs);
221 status = smb2_create_blob_parse(smb2req, in_context_buffer, &in_context_blobs);
222 if (!NT_STATUS_IS_OK(status)) {
223 return smbd_smb2_request_error(smb2req, status);
224 }
225
226 tsubreq = smbd_smb2_create_send(smb2req,
227 smb2req->sconn->smb2.event_ctx,
228 smb2req,
229 in_oplock_level,
230 in_impersonation_level,
231 in_desired_access,
232 in_file_attributes,
233 in_share_access,
234 in_create_disposition,
235 in_create_options,
236 in_name_string,
237 in_context_blobs);
238 if (tsubreq == NULL) {
239 smb2req->subreq = NULL;
240 return smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
241 }
242 tevent_req_set_callback(tsubreq, smbd_smb2_request_create_done, smb2req);
243
244 return smbd_smb2_request_pending_queue(smb2req, tsubreq);
245 }
246
247 static uint64_t get_mid_from_smb2req(struct smbd_smb2_request *smb2req)
248 {
249 uint8_t *reqhdr = (uint8_t *)smb2req->out.vector[smb2req->current_idx].iov_base;
250 return BVAL(reqhdr, SMB2_HDR_MESSAGE_ID);
251 }
252
253 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq)
254 {
255 struct smbd_smb2_request *smb2req = tevent_req_callback_data(tsubreq,
256 struct smbd_smb2_request);
257 int i = smb2req->current_idx;
258 uint8_t *outhdr;
259 DATA_BLOB outbody;
260 DATA_BLOB outdyn;
261 uint8_t out_oplock_level = 0;
262 uint32_t out_create_action = 0;
263 NTTIME out_creation_time = 0;
264 NTTIME out_last_access_time = 0;
265 NTTIME out_last_write_time = 0;
266 NTTIME out_change_time = 0;
267 uint64_t out_allocation_size = 0;
268 uint64_t out_end_of_file = 0;
269 uint32_t out_file_attributes = 0;
270 uint64_t out_file_id_persistent = 0;
271 uint64_t out_file_id_volatile = 0;
272 struct smb2_create_blobs out_context_blobs;
273 DATA_BLOB out_context_buffer;
274 uint16_t out_context_buffer_offset = 0;
275 NTSTATUS status;
276 NTSTATUS error; /* transport error */
277
278 if (smb2req->cancelled) {
279 uint64_t mid = get_mid_from_smb2req(smb2req);
280 DEBUG(10,("smbd_smb2_request_create_done: cancelled mid %llu\n",
281 (unsigned long long)mid ));
282 error = smbd_smb2_request_error(smb2req, NT_STATUS_CANCELLED);
283 if (!NT_STATUS_IS_OK(error)) {
284 smbd_server_connection_terminate(smb2req->sconn,
285 nt_errstr(error));
286 return;
287 }
288 return;
289 }
290
291 status = smbd_smb2_create_recv(tsubreq,
292 smb2req,
293 &out_oplock_level,
294 &out_create_action,
295 &out_creation_time,
296 &out_last_access_time,
297 &out_last_write_time,
298 &out_change_time,
299 &out_allocation_size,
300 &out_end_of_file,
301 &out_file_attributes,
302 &out_file_id_persistent,
303 &out_file_id_volatile,
304 &out_context_blobs);
305 if (!NT_STATUS_IS_OK(status)) {
306 error = smbd_smb2_request_error(smb2req, status);
307 if (!NT_STATUS_IS_OK(error)) {
308 smbd_server_connection_terminate(smb2req->sconn,
309 nt_errstr(error));
310 return;
311 }
312 return;
313 }
314
315 status = smb2_create_blob_push(smb2req, &out_context_buffer, out_context_blobs);
316 if (!NT_STATUS_IS_OK(status)) {
317 error = smbd_smb2_request_error(smb2req, status);
318 if (!NT_STATUS_IS_OK(error)) {
319 smbd_server_connection_terminate(smb2req->sconn,
320 nt_errstr(error));
321 return;
322 }
323 return;
324 }
325
326 if (out_context_buffer.length > 0) {
327 out_context_buffer_offset = SMB2_HDR_BODY + 0x58;
328 }
329
330 outhdr = (uint8_t *)smb2req->out.vector[i].iov_base;
331
332 outbody = data_blob_talloc(smb2req->out.vector, NULL, 0x58);
333 if (outbody.data == NULL) {
334 error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
335 if (!NT_STATUS_IS_OK(error)) {
336 smbd_server_connection_terminate(smb2req->sconn,
337 nt_errstr(error));
338 return;
339 }
340 return;
341 }
342
343 SSVAL(outbody.data, 0x00, 0x58 + 1); /* struct size */
344 SCVAL(outbody.data, 0x02,
345 out_oplock_level); /* oplock level */
346 SCVAL(outbody.data, 0x03, 0); /* reserved */
347 SIVAL(outbody.data, 0x04,
348 out_create_action); /* create action */
349 SBVAL(outbody.data, 0x08,
350 out_creation_time); /* creation time */
351 SBVAL(outbody.data, 0x10,
352 out_last_access_time); /* last access time */
353 SBVAL(outbody.data, 0x18,
354 out_last_write_time); /* last write time */
355 SBVAL(outbody.data, 0x20,
356 out_change_time); /* change time */
357 SBVAL(outbody.data, 0x28,
358 out_allocation_size); /* allocation size */
359 SBVAL(outbody.data, 0x30,
360 out_end_of_file); /* end of file */
361 SIVAL(outbody.data, 0x38,
362 out_file_attributes); /* file attributes */
363 SIVAL(outbody.data, 0x3C, 0); /* reserved */
364 SBVAL(outbody.data, 0x40,
365 out_file_id_persistent); /* file id (persistent) */
366 SBVAL(outbody.data, 0x48,
367 out_file_id_volatile); /* file id (volatile) */
368 SIVAL(outbody.data, 0x50,
369 out_context_buffer_offset); /* create contexts offset */
370 SIVAL(outbody.data, 0x54,
371 out_context_buffer.length); /* create contexts length */
372
373 outdyn = out_context_buffer;
374
375 error = smbd_smb2_request_done(smb2req, outbody, &outdyn);
376 if (!NT_STATUS_IS_OK(error)) {
377 smbd_server_connection_terminate(smb2req->sconn,
378 nt_errstr(error));
379 return;
380 }
381 }
382
383 struct smbd_smb2_create_state {
384 struct smbd_smb2_request *smb2req;
385 struct smb_request *smb1req;
386 struct timed_event *te;
387 struct tevent_immediate *im;
388 struct timeval request_time;
389 struct file_id id;
390 DATA_BLOB private_data;
391 uint8_t out_oplock_level;
392 uint32_t out_create_action;
393 NTTIME out_creation_time;
394 NTTIME out_last_access_time;
395 NTTIME out_last_write_time;
396 NTTIME out_change_time;
397 uint64_t out_allocation_size;
398 uint64_t out_end_of_file;
399 uint32_t out_file_attributes;
400 uint64_t out_file_id_persistent;
401 uint64_t out_file_id_volatile;
402 struct smb2_create_blobs out_context_blobs;
403 };
404
405 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
406 struct tevent_context *ev,
407 struct smbd_smb2_request *smb2req,
408 uint8_t in_oplock_level,
409 uint32_t in_impersonation_level,
410 uint32_t in_desired_access,
411 uint32_t in_file_attributes,
412 uint32_t in_share_access,
413 uint32_t in_create_disposition,
414 uint32_t in_create_options,
415 const char *in_name,
416 struct smb2_create_blobs in_context_blobs)
417 {
418 struct tevent_req *req = NULL;
419 struct smbd_smb2_create_state *state = NULL;
420 NTSTATUS status;
421 struct smb_request *smb1req = NULL;
422 files_struct *result = NULL;
423 int info;
424 struct timespec write_time_ts;
425 struct smb2_create_blobs out_context_blobs;
426 int requested_oplock_level;
427
428 ZERO_STRUCT(out_context_blobs);
429
430 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat_conn))) {
431 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
432 } else {
433 requested_oplock_level = in_oplock_level;
434 }
435
436
437 if (!smb2req->async) {
438 /* New create call. */
439 req = tevent_req_create(mem_ctx, &state,
440 struct smbd_smb2_create_state);
441 if (req == NULL) {
442 return NULL;
443 }
444 state->smb2req = smb2req;
445 smb2req->subreq = req; /* So we can find this when going async. */
446
447 smb1req = smbd_smb2_fake_smb_request(smb2req);
448 if (tevent_req_nomem(smb1req, req)) {
449 return tevent_req_post(req, ev);
450 }
451 state->smb1req = smb1req;
452 DEBUG(10,("smbd_smb2_create: name[%s]\n",
453 in_name));
454 } else {
455 /* Re-entrant create call. */
456 req = smb2req->subreq;
457 state = tevent_req_data(req,
458 struct smbd_smb2_create_state);
459 smb1req = state->smb1req;
460 DEBUG(10,("smbd_smb2_create_send: reentrant for file %s\n",
461 in_name ));
462 }
463
464 if (IS_IPC(smb1req->conn)) {
465 const char *pipe_name = in_name;
466
467 if (!lp_nt_pipe_support()) {
468 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
469 return tevent_req_post(req, ev);
470 }
471
472 /* Strip \\ off the name. */
473 if (pipe_name[0] == '\\') {
474 pipe_name++;
475 }
476
477 status = open_np_file(smb1req, pipe_name, &result);
478 if (!NT_STATUS_IS_OK(status)) {
479 tevent_req_nterror(req, status);
480 return tevent_req_post(req, ev);
481 }
482 info = FILE_WAS_OPENED;
483 } else if (CAN_PRINT(smb1req->conn)) {
484 status = file_new(smb1req, smb1req->conn, &result);
485 if(!NT_STATUS_IS_OK(status)) {
486 tevent_req_nterror(req, status);
487 return tevent_req_post(req, ev);
488 }
489
490 status = print_spool_open(result, in_name,
491 smb1req->vuid);
492 if (!NT_STATUS_IS_OK(status)) {
493 file_free(smb1req, result);
494 tevent_req_nterror(req, status);
495 return tevent_req_post(req, ev);
496 }
497 info = FILE_WAS_CREATED;
498 } else {
499 char *fname;
500 struct smb_filename *smb_fname = NULL;
501 struct smb2_create_blob *exta = NULL;
502 struct ea_list *ea_list = NULL;
503 struct smb2_create_blob *mxac = NULL;
504 NTTIME max_access_time = 0;
505 struct smb2_create_blob *secd = NULL;
506 struct security_descriptor *sec_desc = NULL;
507 struct smb2_create_blob *dhnq = NULL;
508 struct smb2_create_blob *dhnc = NULL;
509 struct smb2_create_blob *alsi = NULL;
510 uint64_t allocation_size = 0;
511 struct smb2_create_blob *twrp = NULL;
512 struct smb2_create_blob *qfid = NULL;
513
514 exta = smb2_create_blob_find(&in_context_blobs,
515 SMB2_CREATE_TAG_EXTA);
516 mxac = smb2_create_blob_find(&in_context_blobs,
517 SMB2_CREATE_TAG_MXAC);
518 secd = smb2_create_blob_find(&in_context_blobs,
519 SMB2_CREATE_TAG_SECD);
520 dhnq = smb2_create_blob_find(&in_context_blobs,
521 SMB2_CREATE_TAG_DHNQ);
522 dhnc = smb2_create_blob_find(&in_context_blobs,
523 SMB2_CREATE_TAG_DHNC);
524 alsi = smb2_create_blob_find(&in_context_blobs,
525 SMB2_CREATE_TAG_ALSI);
526 twrp = smb2_create_blob_find(&in_context_blobs,
527 SMB2_CREATE_TAG_TWRP);
528 qfid = smb2_create_blob_find(&in_context_blobs,
529 SMB2_CREATE_TAG_QFID);
530
531 fname = talloc_strdup(state, in_name);
532 if (tevent_req_nomem(fname, req)) {
533 return tevent_req_post(req, ev);
534 }
535
536 if (exta) {
537 if (dhnc) {
538 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
539 return tevent_req_post(req, ev);
540 }
541
542 ea_list = read_nttrans_ea_list(mem_ctx,
543 (const char *)exta->data.data, exta->data.length);
544 if (!ea_list) {
545 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
546 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
547 return tevent_req_post(req, ev);
548 }
549 }
550
551 if (mxac) {
552 if (dhnc) {
553 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
554 return tevent_req_post(req, ev);
555 }
556
557 if (mxac->data.length == 0) {
558 max_access_time = 0;
559 } else if (mxac->data.length == 8) {
560 max_access_time = BVAL(mxac->data.data, 0);
561 } else {
562 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
563 return tevent_req_post(req, ev);
564 }
565 }
566
567 if (secd) {
568 enum ndr_err_code ndr_err;
569
570 if (dhnc) {
571 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
572 return tevent_req_post(req, ev);
573 }
574
575 sec_desc = talloc_zero(state, struct security_descriptor);
576 if (tevent_req_nomem(sec_desc, req)) {
577 return tevent_req_post(req, ev);
578 }
579
580 ndr_err = ndr_pull_struct_blob(&secd->data,
581 sec_desc, sec_desc,
582 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
583 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
584 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
585 ndr_errstr(ndr_err)));
586 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
587 return tevent_req_post(req, ev);
588 }
589 }
590
591 if (dhnq) {
592 if (dhnc) {
593 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
594 return tevent_req_post(req, ev);
595 }
596
597 if (dhnq->data.length != 16) {
598 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
599 return tevent_req_post(req, ev);
600 }
601 /*
602 * we don't support durable handles yet
603 * and have to ignore this
604 */
605 }
606
607 if (dhnc) {
608 if (dhnc->data.length != 16) {
609 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
610 return tevent_req_post(req, ev);
611 }
612 /* we don't support durable handles yet */
613 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
614 return tevent_req_post(req, ev);
615 }
616
617 if (alsi) {
618 if (dhnc) {
619 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
620 return tevent_req_post(req, ev);
621 }
622
623 if (alsi->data.length != 8) {
624 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
625 return tevent_req_post(req, ev);
626 }
627 allocation_size = BVAL(alsi->data.data, 0);
628 }
629
630 if (twrp) {
631 NTTIME nttime;
632 time_t t;
633 struct tm *tm;
634
635 if (dhnc) {
636 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
637 return tevent_req_post(req, ev);
638 }
639
640 if (twrp->data.length != 8) {
641 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
642 return tevent_req_post(req, ev);
643 }
644
645 nttime = BVAL(twrp->data.data, 0);
646 t = nt_time_to_unix(nttime);
647 tm = gmtime(&t);
648
649 TALLOC_FREE(fname);
650 fname = talloc_asprintf(state,
651 "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
652 tm->tm_year + 1900,
653 tm->tm_mon + 1,
654 tm->tm_mday,
655 tm->tm_hour,
656 tm->tm_min,
657 tm->tm_sec,
658 in_name);
659 if (tevent_req_nomem(fname, req)) {
660 return tevent_req_post(req, ev);
661 }
662 }
663
664 if (qfid) {
665 if (qfid->data.length != 0) {
666 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
667 return tevent_req_post(req, ev);
668 }
669 }
670
671 /* these are ignored for SMB2 */
672 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
673 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
674
675 /*
676 * For a DFS path the function parse_dfs_path()
677 * will do the path processing.
678 */
679
680 if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
681 /* convert '\\' into '/' */
682 status = check_path_syntax(fname);
683 if (!NT_STATUS_IS_OK(status)) {
684 tevent_req_nterror(req, status);
685 return tevent_req_post(req, ev);
686 }
687 }
688
689 status = filename_convert(req,
690 smb1req->conn,
691 smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
692 fname,
693 0,
694 NULL,
695 &smb_fname);
696 if (!NT_STATUS_IS_OK(status)) {
697 tevent_req_nterror(req, status);
698 return tevent_req_post(req, ev);
699 }
700
701 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
702
703 status = SMB_VFS_CREATE_FILE(smb1req->conn,
704 smb1req,
705 0, /* root_dir_fid */
706 smb_fname,
707 in_desired_access,
708 in_share_access,
709 in_create_disposition,
710 in_create_options,
711 in_file_attributes,
712 map_smb2_oplock_levels_to_samba(requested_oplock_level),
713 allocation_size,
714 0, /* private_flags */
715 sec_desc,
716 ea_list,
717 &result,
718 &info);
719 if (!NT_STATUS_IS_OK(status)) {
720 if (open_was_deferred(smb1req->mid)) {
721 return req;
722 }
723 tevent_req_nterror(req, status);
724 return tevent_req_post(req, ev);
725 }
726
727 if (mxac) {
728 NTTIME last_write_time;
729
730 unix_timespec_to_nt_time(&last_write_time,
731 result->fsp_name->st.st_ex_mtime);
732 if (last_write_time != max_access_time) {
733 uint8_t p[8];
734 uint32_t max_access_granted;
735 DATA_BLOB blob = data_blob_const(p, sizeof(p));
736
737 status = smbd_check_open_rights(smb1req->conn,
738 result->fsp_name,
739 SEC_FLAG_MAXIMUM_ALLOWED,
740 &max_access_granted);
741
742 SIVAL(p, 0, NT_STATUS_V(status));
743 SIVAL(p, 4, max_access_granted);
744
745 status = smb2_create_blob_add(state,
746 &out_context_blobs,
747 SMB2_CREATE_TAG_MXAC,
748 blob);
749 if (!NT_STATUS_IS_OK(status)) {
750 tevent_req_nterror(req, status);
751 return tevent_req_post(req, ev);
752 }
753 }
754 }
755
756 if (qfid) {
757 uint8_t p[32];
758 uint64_t file_index = get_FileIndex(result->conn,
759 &result->fsp_name->st);
760 DATA_BLOB blob = data_blob_const(p, sizeof(p));
761
762 ZERO_STRUCT(p);
763
764 /* From conversations with Microsoft engineers at
765 the MS plugfest. The first 8 bytes are the "volume index"
766 == inode, the second 8 bytes are the "volume id",
767 == dev. This will be updated in the SMB2 doc. */
768 SBVAL(p, 0, file_index);
769 SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
770
771 status = smb2_create_blob_add(state, &out_context_blobs,
772 SMB2_CREATE_TAG_QFID,
773 blob);
774 if (!NT_STATUS_IS_OK(status)) {
775 tevent_req_nterror(req, status);
776 return tevent_req_post(req, ev);
777 }
778 }
779 }
780
781 smb2req->compat_chain_fsp = smb1req->chain_fsp;
782
783 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat_conn))) {
784 state->out_oplock_level = in_oplock_level;
785 } else {
786 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
787 }
788
789 if ((in_create_disposition == FILE_SUPERSEDE)
790 && (info == FILE_WAS_OVERWRITTEN)) {
791 state->out_create_action = FILE_WAS_SUPERSEDED;
792 } else {
793 state->out_create_action = info;
794 }
795 state->out_file_attributes = dos_mode(result->conn,
796 result->fsp_name);
797 /* Deal with other possible opens having a modified
798 write time. JRA. */
799 ZERO_STRUCT(write_time_ts);
800 get_file_infos(result->file_id, 0, NULL, &write_time_ts);
801 if (!null_timespec(write_time_ts)) {
802 update_stat_ex_mtime(&result->fsp_name->st, write_time_ts);
803 }
804
805 unix_timespec_to_nt_time(&state->out_creation_time,
806 get_create_timespec(smb1req->conn, result,
807 result->fsp_name));
808 unix_timespec_to_nt_time(&state->out_last_access_time,
809 result->fsp_name->st.st_ex_atime);
810 unix_timespec_to_nt_time(&state->out_last_write_time,
811 result->fsp_name->st.st_ex_mtime);
812 unix_timespec_to_nt_time(&state->out_change_time,
813 get_change_timespec(smb1req->conn, result,
814 result->fsp_name));
815 state->out_allocation_size =
816 result->fsp_name->st.st_ex_blksize *
817 result->fsp_name->st.st_ex_blocks;
818 state->out_end_of_file = result->fsp_name->st.st_ex_size;
819 if (state->out_file_attributes == 0) {
820 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
821 }
822 state->out_file_id_persistent = result->fnum;
823 state->out_file_id_volatile = result->fnum;
824 state->out_context_blobs = out_context_blobs;
825
826 tevent_req_done(req);
827 return tevent_req_post(req, ev);
828 }
829
830 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
831 TALLOC_CTX *mem_ctx,
832 uint8_t *out_oplock_level,
833 uint32_t *out_create_action,
834 NTTIME *out_creation_time,
835 NTTIME *out_last_access_time,
836 NTTIME *out_last_write_time,
837 NTTIME *out_change_time,
838 uint64_t *out_allocation_size,
839 uint64_t *out_end_of_file,
840 uint32_t *out_file_attributes,
841 uint64_t *out_file_id_persistent,
842 uint64_t *out_file_id_volatile,
843 struct smb2_create_blobs *out_context_blobs)
844 {
845 NTSTATUS status;
846 struct smbd_smb2_create_state *state = tevent_req_data(req,
847 struct smbd_smb2_create_state);
848
849 if (tevent_req_is_nterror(req, &status)) {
850 tevent_req_received(req);
851 return status;
852 }
853
854 *out_oplock_level = state->out_oplock_level;
855 *out_create_action = state->out_create_action;
856 *out_creation_time = state->out_creation_time;
857 *out_last_access_time = state->out_last_access_time;
858 *out_last_write_time = state->out_last_write_time;
859 *out_change_time = state->out_change_time;
860 *out_allocation_size = state->out_allocation_size;
861 *out_end_of_file = state->out_end_of_file;
862 *out_file_attributes = state->out_file_attributes;
863 *out_file_id_persistent = state->out_file_id_persistent;
864 *out_file_id_volatile = state->out_file_id_volatile;
865 *out_context_blobs = state->out_context_blobs;
866
867 talloc_steal(mem_ctx, state->out_context_blobs.blobs);
868
869 tevent_req_received(req);
870 return NT_STATUS_OK;
871 }
872
873 /*********************************************************
874 Code for dealing with deferred opens.
875 *********************************************************/
876
877 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
878 struct timeval *p_request_time,
879 void **pp_state)
880 {
881 struct smbd_smb2_create_state *state = NULL;
882 struct tevent_req *req = NULL;
883
884 if (!smb2req) {
885 return false;
886 }
887 if (!smb2req->async) {
888 return false;
889 }
890 req = smb2req->subreq;
891 if (!req) {
892 return false;
893 }
894 state = tevent_req_data(req, struct smbd_smb2_create_state);
895 if (!state) {
896 return false;
897 }
898 if (p_request_time) {
899 *p_request_time = state->request_time;
900 }
901 if (pp_state) {
902 *pp_state = (void *)state->private_data.data;
903 }
904 return true;
905 }
906
907 /*********************************************************
908 Re-process this call early - requested by message or
909 close.
910 *********************************************************/
911
912 static struct smbd_smb2_request *find_open_smb2req(
913 struct smbd_server_connection *sconn, uint64_t mid)
914 {
915 struct smbd_smb2_request *smb2req;
916
917 for (smb2req = sconn->smb2.requests; smb2req; smb2req = smb2req->next) {
918 uint64_t message_id;
919 if (smb2req->subreq == NULL) {
920 /* This message has been processed. */
921 continue;
922 }
923 if (!tevent_req_is_in_progress(smb2req->subreq)) {
924 /* This message has been processed. */
925 continue;
926 }
927 message_id = get_mid_from_smb2req(smb2req);
928 if (message_id == mid) {
929 return smb2req;
930 }
931 }
932 return NULL;
933 }
934
935 bool open_was_deferred_smb2(struct smbd_server_connection *sconn, uint64_t mid)
936 {
937 struct smbd_smb2_create_state *state = NULL;
938 struct smbd_smb2_request *smb2req;
939
940 smb2req = find_open_smb2req(sconn, mid);
941
942 if (!smb2req) {
943 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
944 (unsigned long long)mid));
945 return false;
946 }
947 if (!smb2req->subreq) {
948 return false;
949 }
950 if (!tevent_req_is_in_progress(smb2req->subreq)) {
951 return false;
952 }
953 state = tevent_req_data(smb2req->subreq,
954 struct smbd_smb2_create_state);
955 if (!state) {
956 return false;
957 }
958 /* It's not in progress if there's no timeout event. */
959 if (!state->te) {
960 return false;
961 }
962
963 DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
964 (unsigned long long)mid));
965
966 return true;
967 }
968
969 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
970 uint64_t mid)
971 {
972 struct smbd_smb2_create_state *state = NULL;
973
974 if (!smb2req->subreq) {
975 return;
976 }
977 if (!tevent_req_is_in_progress(smb2req->subreq)) {
978 return;
979 }
980 state = tevent_req_data(smb2req->subreq,
981 struct smbd_smb2_create_state);
982 if (!state) {
983 return;
984 }
985
986 DEBUG(10,("remove_deferred_open_message_smb2_internal: "
987 "mid %llu\n",
988 (unsigned long long)mid ));
989
990 /* Ensure we don't have any outstanding timer event. */
991 TALLOC_FREE(state->te);
992 /* Ensure we don't have any outstanding immediate event. */
993 TALLOC_FREE(state->im);
994 }
995
996 void remove_deferred_open_message_smb2(
997 struct smbd_server_connection *sconn, uint64_t mid)
998 {
999 struct smbd_smb2_request *smb2req;
1000
1001 smb2req = find_open_smb2req(sconn, mid);
1002
1003 if (!smb2req) {
1004 DEBUG(10,("remove_deferred_open_message_smb2: "
1005 "can't find mid %llu\n",
1006 (unsigned long long)mid ));
1007 return;
1008 }
1009 remove_deferred_open_message_smb2_internal(smb2req, mid);
1010 }
1011
1012 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1013 struct tevent_immediate *im,
1014 void *private_data)
1015 {
1016 struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1017 struct smbd_smb2_request);
1018 struct smbd_server_connection *sconn = smb2req->sconn;
1019 uint64_t mid = get_mid_from_smb2req(smb2req);
1020 NTSTATUS status;
1021
1022 DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1023 "re-dispatching mid %llu\n",
1024 (unsigned long long)mid ));
1025
1026 status = smbd_smb2_request_dispatch(smb2req);
1027 if (!NT_STATUS_IS_OK(status)) {
1028 smbd_server_connection_terminate(sconn, nt_errstr(status));
1029 return;
1030 }
1031 }
1032
1033 void schedule_deferred_open_message_smb2(
1034 struct smbd_server_connection *sconn, uint64_t mid)
1035 {
1036 struct smbd_smb2_create_state *state = NULL;
1037 struct smbd_smb2_request *smb2req;
1038
1039 smb2req = find_open_smb2req(sconn, mid);
1040
1041 if (!smb2req) {
1042 DEBUG(10,("schedule_deferred_open_message_smb2: "
1043 "can't find mid %llu\n",
1044 (unsigned long long)mid ));
1045 return;
1046 }
1047 if (!smb2req->subreq) {
1048 return;
1049 }
1050 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1051 return;
1052 }
1053 state = tevent_req_data(smb2req->subreq,
1054 struct smbd_smb2_create_state);
1055 if (!state) {
1056 return;
1057 }
1058
1059 /* Ensure we don't have any outstanding timer event. */
1060 TALLOC_FREE(state->te);
1061 /* Ensure we don't have any outstanding immediate event. */
1062 TALLOC_FREE(state->im);
1063
1064 /*
1065 * This is subtle. We must null out the callback
1066 * before resheduling, else the first call to
1067 * tevent_req_nterror() causes the _receive()
1068 * function to be called, this causing tevent_req_post()
1069 * to crash.
1070 */
1071 tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1072
1073 state->im = tevent_create_immediate(smb2req);
1074 if (!state->im) {
1075 smbd_server_connection_terminate(smb2req->sconn,
1076 nt_errstr(NT_STATUS_NO_MEMORY));
1077 }
1078
1079 DEBUG(10,("schedule_deferred_open_message_smb2: "
1080 "re-processing mid %llu\n",
1081 (unsigned long long)mid ));
1082
1083 tevent_schedule_immediate(state->im,
1084 smb2req->sconn->smb2.event_ctx,
1085 smbd_smb2_create_request_dispatch_immediate,
1086 smb2req);
1087 }
1088
1089 /*********************************************************
1090 Re-process this call.
1091 *********************************************************/
1092
1093 static void smb2_deferred_open_timer(struct event_context *ev,
1094 struct timed_event *te,
1095 struct timeval _tval,
1096 void *private_data)
1097 {
1098 NTSTATUS status;
1099 struct smbd_smb2_create_state *state = NULL;
1100 struct smbd_smb2_request *smb2req = talloc_get_type(private_data,
1101 struct smbd_smb2_request);
1102
1103 DEBUG(10,("smb2_deferred_open_timer: [idx=%d], %s\n",
1104 smb2req->current_idx,
1105 tevent_req_default_print(smb2req->subreq, talloc_tos()) ));
1106
1107 state = tevent_req_data(smb2req->subreq,
1108 struct smbd_smb2_create_state);
1109 if (!state) {
1110 return;
1111 }
1112 /*
1113 * Null this out, don't talloc_free. It will
1114 * be talloc_free'd by the tevent library when
1115 * this returns.
1116 */
1117 state->te = NULL;
1118 /* Ensure we don't have any outstanding immediate event. */
1119 TALLOC_FREE(state->im);
1120
1121 /*
1122 * This is subtle. We must null out the callback
1123 * before resheduling, else the first call to
1124 * tevent_req_nterror() causes the _receive()
1125 * function to be called, this causing tevent_req_post()
1126 * to crash.
1127 */
1128 tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1129
1130 status = smbd_smb2_request_dispatch(smb2req);
1131
1132 if (!NT_STATUS_IS_OK(status)) {
1133 smbd_server_connection_terminate(smb2req->sconn,
1134 nt_errstr(status));
1135 }
1136 }
1137
1138 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1139 {
1140 struct smbd_smb2_request *smb2req = NULL;
1141 struct smbd_smb2_create_state *state = tevent_req_data(req,
1142 struct smbd_smb2_create_state);
1143 uint64_t mid;
1144
1145 if (!state) {
1146 return false;
1147 }
1148
1149 if (!state->smb2req) {
1150 return false;
1151 }
1152
1153 smb2req = state->smb2req;
1154 mid = get_mid_from_smb2req(smb2req);
1155
1156 remove_deferred_open_entry(state->id, mid,
1157 sconn_server_id(smb2req->sconn));
1158 remove_deferred_open_message_smb2_internal(smb2req, mid);
1159 smb2req->cancelled = true;
1160
1161 tevent_req_done(req);
1162 return true;
1163 }
1164
1165 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1166 struct timeval request_time,
1167 struct timeval timeout,
1168 struct file_id id,
1169 char *private_data,
1170 size_t priv_len)
1171 {
1172 struct tevent_req *req = NULL;
1173 struct smbd_smb2_create_state *state = NULL;
1174 struct timeval end_time;
1175
1176 if (!smb2req) {
1177 return false;
1178 }
1179 req = smb2req->subreq;
1180 if (!req) {
1181 return false;
1182 }
1183 state = tevent_req_data(req, struct smbd_smb2_create_state);
1184 if (!state) {
1185 return false;
1186 }
1187 state->id = id;
1188 state->request_time = request_time;
1189 state->private_data = data_blob_talloc(state, private_data,
1190 priv_len);
1191 if (!state->private_data.data) {
1192 return false;
1193 }
1194
1195 #if 1
1196 /* Boo - turns out this isn't what W2K8R2
1197 does. It actually sends the STATUS_PENDING
1198 message followed by the STATUS_SHARING_VIOLATION
1199 message. Surely this means that all open
1200 calls (even on directories) will potentially
1201 fail in a chain.... ? And I've seen directory
1202 opens as the start of a chain. JRA.
1203
1204 Update: 19th May 2010. Talking with Microsoft
1205 engineers at the plugfest this is a bug in
1206 Windows. Re-enable this code.
1207 */
1208 /*
1209 * More subtlety. To match W2K8R2 don't
1210 * send a "gone async" message if it's simply
1211 * a STATUS_SHARING_VIOLATION (short) wait, not
1212 * an oplock break wait. We do this by prematurely
1213 * setting smb2req->async flag.
1214 */
1215 if (timeout.tv_sec < 2) {
1216 DEBUG(10,("push_deferred_open_message_smb2: "
1217 "short timer wait (usec = %u). "
1218 "Don't send async message.\n",
1219 (unsigned int)timeout.tv_usec ));
1220 smb2req->async = true;
1221 }
1222 #endif
1223
1224 /* Re-schedule us to retry on timer expiry. */
1225 end_time = timeval_sum(&request_time, &timeout);
1226
1227 DEBUG(10,("push_deferred_open_message_smb2: "
1228 "timeout at %s\n",
1229 timeval_string(talloc_tos(),
1230 &end_time,
1231 true) ));
1232
1233 state->te = event_add_timed(smb2req->sconn->smb2.event_ctx,
1234 state,
1235 end_time,
1236 smb2_deferred_open_timer,
1237 smb2req);
1238 if (!state->te) {
1239 return false;
1240 }
1241
1242 /* allow this request to be canceled */
1243 tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1244
1245 return true;
1246 }
WIP