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lib: replace: Add strsep function (missing on Solaris).
[Samba.git] / source3 / smbd / smbXsrv_open.c
blob1fe8b1bb5a4e7da9f8c94eeaac3ed91eb8708a89
1 /*
2 Unix SMB/CIFS implementation.
3
4 Copyright (C) Stefan Metzmacher 2012
5 Copyright (C) Michael Adam 2012
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
19 */
20
21 #include "includes.h"
22 #include "system/filesys.h"
23 #include "smbd/smbd.h"
24 #include "smbd/globals.h"
25 #include "dbwrap/dbwrap.h"
26 #include "dbwrap/dbwrap_rbt.h"
27 #include "dbwrap/dbwrap_open.h"
28 #include "../libcli/security/security.h"
29 #include "messages.h"
30 #include "lib/util/util_tdb.h"
31 #include "librpc/gen_ndr/ndr_smbXsrv.h"
32 #include "serverid.h"
33
34 struct smbXsrv_open_table {
35 struct {
36 struct db_context *db_ctx;
37 uint32_t lowest_id;
38 uint32_t highest_id;
39 uint32_t max_opens;
40 uint32_t num_opens;
41 } local;
42 struct {
43 struct db_context *db_ctx;
44 } global;
45 };
46
47 static struct db_context *smbXsrv_open_global_db_ctx = NULL;
48
49 NTSTATUS smbXsrv_open_global_init(void)
50 {
51 char *global_path = NULL;
52 struct db_context *db_ctx = NULL;
53
54 if (smbXsrv_open_global_db_ctx != NULL) {
55 return NT_STATUS_OK;
56 }
57
58 global_path = lock_path("smbXsrv_open_global.tdb");
59 if (global_path == NULL) {
60 return NT_STATUS_NO_MEMORY;
61 }
62
63 db_ctx = db_open(NULL, global_path,
64 0, /* hash_size */
65 TDB_DEFAULT |
66 TDB_CLEAR_IF_FIRST |
67 TDB_INCOMPATIBLE_HASH,
68 O_RDWR | O_CREAT, 0600,
69 DBWRAP_LOCK_ORDER_1,
70 DBWRAP_FLAG_NONE);
71 TALLOC_FREE(global_path);
72 if (db_ctx == NULL) {
73 NTSTATUS status;
74
75 status = map_nt_error_from_unix_common(errno);
76
77 return status;
78 }
79
80 smbXsrv_open_global_db_ctx = db_ctx;
81
82 return NT_STATUS_OK;
83 }
84
85 /*
86 * NOTE:
87 * We need to store the keys in big endian so that dbwrap_rbt's memcmp
88 * has the same result as integer comparison between the uint32_t
89 * values.
90 *
91 * TODO: implement string based key
92 */
93
94 #define SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE sizeof(uint32_t)
95
96 static TDB_DATA smbXsrv_open_global_id_to_key(uint32_t id,
97 uint8_t *key_buf)
98 {
99 TDB_DATA key;
100
101 RSIVAL(key_buf, 0, id);
102
103 key = make_tdb_data(key_buf, SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE);
104
105 return key;
106 }
107
108 #if 0
109 static NTSTATUS smbXsrv_open_global_key_to_id(TDB_DATA key, uint32_t *id)
110 {
111 if (id == NULL) {
112 return NT_STATUS_INVALID_PARAMETER;
113 }
114
115 if (key.dsize != SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE) {
116 return NT_STATUS_INTERNAL_DB_CORRUPTION;
117 }
118
119 *id = RIVAL(key.dptr, 0);
120
121 return NT_STATUS_OK;
122 }
123 #endif
124
125 #define SMBXSRV_OPEN_LOCAL_TDB_KEY_SIZE sizeof(uint32_t)
126
127 static TDB_DATA smbXsrv_open_local_id_to_key(uint32_t id,
128 uint8_t *key_buf)
129 {
130 TDB_DATA key;
131
132 RSIVAL(key_buf, 0, id);
133
134 key = make_tdb_data(key_buf, SMBXSRV_OPEN_LOCAL_TDB_KEY_SIZE);
135
136 return key;
137 }
138
139 static NTSTATUS smbXsrv_open_local_key_to_id(TDB_DATA key, uint32_t *id)
140 {
141 if (id == NULL) {
142 return NT_STATUS_INVALID_PARAMETER;
143 }
144
145 if (key.dsize != SMBXSRV_OPEN_LOCAL_TDB_KEY_SIZE) {
146 return NT_STATUS_INTERNAL_DB_CORRUPTION;
147 }
148
149 *id = RIVAL(key.dptr, 0);
150
151 return NT_STATUS_OK;
152 }
153
154 static NTSTATUS smbXsrv_open_table_init(struct smbXsrv_connection *conn,
155 uint32_t lowest_id,
156 uint32_t highest_id,
157 uint32_t max_opens)
158 {
159 struct smbXsrv_client *client = conn->client;
160 struct smbXsrv_open_table *table;
161 NTSTATUS status;
162 uint64_t max_range;
163
164 if (lowest_id > highest_id) {
165 return NT_STATUS_INTERNAL_ERROR;
166 }
167
168 max_range = highest_id;
169 max_range -= lowest_id;
170 max_range += 1;
171
172 if (max_opens > max_range) {
173 return NT_STATUS_INTERNAL_ERROR;
174 }
175
176 table = talloc_zero(client, struct smbXsrv_open_table);
177 if (table == NULL) {
178 return NT_STATUS_NO_MEMORY;
179 }
180
181 table->local.db_ctx = db_open_rbt(table);
182 if (table->local.db_ctx == NULL) {
183 TALLOC_FREE(table);
184 return NT_STATUS_NO_MEMORY;
185 }
186 table->local.lowest_id = lowest_id;
187 table->local.highest_id = highest_id;
188 table->local.max_opens = max_opens;
189
190 status = smbXsrv_open_global_init();
191 if (!NT_STATUS_IS_OK(status)) {
192 TALLOC_FREE(table);
193 return status;
194 }
195
196 table->global.db_ctx = smbXsrv_open_global_db_ctx;
197
198 client->open_table = table;
199 return NT_STATUS_OK;
200 }
201
202 struct smbXsrv_open_local_allocate_state {
203 const uint32_t lowest_id;
204 const uint32_t highest_id;
205 uint32_t last_id;
206 uint32_t useable_id;
207 NTSTATUS status;
208 };
209
210 static int smbXsrv_open_local_allocate_traverse(struct db_record *rec,
211 void *private_data)
212 {
213 struct smbXsrv_open_local_allocate_state *state =
214 (struct smbXsrv_open_local_allocate_state *)private_data;
215 TDB_DATA key = dbwrap_record_get_key(rec);
216 uint32_t id = 0;
217 NTSTATUS status;
218
219 status = smbXsrv_open_local_key_to_id(key, &id);
220 if (!NT_STATUS_IS_OK(status)) {
221 state->status = status;
222 return -1;
223 }
224
225 if (id <= state->last_id) {
226 state->status = NT_STATUS_INTERNAL_DB_CORRUPTION;
227 return -1;
228 }
229 state->last_id = id;
230
231 if (id > state->useable_id) {
232 state->status = NT_STATUS_OK;
233 return -1;
234 }
235
236 if (state->useable_id == state->highest_id) {
237 state->status = NT_STATUS_INSUFFICIENT_RESOURCES;
238 return -1;
239 }
240
241 state->useable_id +=1;
242 return 0;
243 }
244
245 static NTSTATUS smbXsrv_open_local_allocate_id(struct db_context *db,
246 uint32_t lowest_id,
247 uint32_t highest_id,
248 TALLOC_CTX *mem_ctx,
249 struct db_record **_rec,
250 uint32_t *_id)
251 {
252 struct smbXsrv_open_local_allocate_state state = {
253 .lowest_id = lowest_id,
254 .highest_id = highest_id,
255 .last_id = 0,
256 .useable_id = lowest_id,
257 .status = NT_STATUS_INTERNAL_ERROR,
258 };
259 uint32_t i;
260 uint32_t range;
261 NTSTATUS status;
262 int count = 0;
263
264 *_rec = NULL;
265 *_id = 0;
266
267 if (lowest_id > highest_id) {
268 return NT_STATUS_INSUFFICIENT_RESOURCES;
269 }
270
271 /*
272 * first we try randomly
273 */
274 range = (highest_id - lowest_id) + 1;
275
276 for (i = 0; i < (range / 2); i++) {
277 uint32_t id;
278 uint8_t key_buf[SMBXSRV_OPEN_LOCAL_TDB_KEY_SIZE];
279 TDB_DATA key;
280 TDB_DATA val;
281 struct db_record *rec = NULL;
282
283 id = generate_random() % range;
284 id += lowest_id;
285
286 if (id < lowest_id) {
287 id = lowest_id;
288 }
289 if (id > highest_id) {
290 id = highest_id;
291 }
292
293 key = smbXsrv_open_local_id_to_key(id, key_buf);
294
295 rec = dbwrap_fetch_locked(db, mem_ctx, key);
296 if (rec == NULL) {
297 return NT_STATUS_INSUFFICIENT_RESOURCES;
298 }
299
300 val = dbwrap_record_get_value(rec);
301 if (val.dsize != 0) {
302 TALLOC_FREE(rec);
303 continue;
304 }
305
306 *_rec = rec;
307 *_id = id;
308 return NT_STATUS_OK;
309 }
310
311 /*
312 * if the range is almost full,
313 * we traverse the whole table
314 * (this relies on sorted behavior of dbwrap_rbt)
315 */
316 status = dbwrap_traverse_read(db, smbXsrv_open_local_allocate_traverse,
317 &state, &count);
318 if (NT_STATUS_IS_OK(status)) {
319 if (NT_STATUS_IS_OK(state.status)) {
320 return NT_STATUS_INTERNAL_ERROR;
321 }
322
323 if (!NT_STATUS_EQUAL(state.status, NT_STATUS_INTERNAL_ERROR)) {
324 return state.status;
325 }
326
327 if (state.useable_id <= state.highest_id) {
328 state.status = NT_STATUS_OK;
329 } else {
330 return NT_STATUS_INSUFFICIENT_RESOURCES;
331 }
332 } else if (!NT_STATUS_EQUAL(status, NT_STATUS_INTERNAL_DB_CORRUPTION)) {
333 /*
334 * Here we really expect NT_STATUS_INTERNAL_DB_CORRUPTION!
335 *
336 * If we get anything else it is an error, because it
337 * means we did not manage to find a free slot in
338 * the db.
339 */
340 return NT_STATUS_INSUFFICIENT_RESOURCES;
341 }
342
343 if (NT_STATUS_IS_OK(state.status)) {
344 uint32_t id;
345 uint8_t key_buf[SMBXSRV_OPEN_LOCAL_TDB_KEY_SIZE];
346 TDB_DATA key;
347 TDB_DATA val;
348 struct db_record *rec = NULL;
349
350 id = state.useable_id;
351
352 key = smbXsrv_open_local_id_to_key(id, key_buf);
353
354 rec = dbwrap_fetch_locked(db, mem_ctx, key);
355 if (rec == NULL) {
356 return NT_STATUS_INSUFFICIENT_RESOURCES;
357 }
358
359 val = dbwrap_record_get_value(rec);
360 if (val.dsize != 0) {
361 TALLOC_FREE(rec);
362 return NT_STATUS_INTERNAL_DB_CORRUPTION;
363 }
364
365 *_rec = rec;
366 *_id = id;
367 return NT_STATUS_OK;
368 }
369
370 return state.status;
371 }
372
373 struct smbXsrv_open_local_fetch_state {
374 struct smbXsrv_open *op;
375 NTSTATUS status;
376 };
377
378 static void smbXsrv_open_local_fetch_parser(TDB_DATA key, TDB_DATA data,
379 void *private_data)
380 {
381 struct smbXsrv_open_local_fetch_state *state =
382 (struct smbXsrv_open_local_fetch_state *)private_data;
383 void *ptr;
384
385 if (data.dsize != sizeof(ptr)) {
386 state->status = NT_STATUS_INTERNAL_DB_ERROR;
387 return;
388 }
389
390 memcpy(&ptr, data.dptr, data.dsize);
391 state->op = talloc_get_type_abort(ptr, struct smbXsrv_open);
392 state->status = NT_STATUS_OK;
393 }
394
395 static NTSTATUS smbXsrv_open_local_lookup(struct smbXsrv_open_table *table,
396 uint32_t open_local_id,
397 uint32_t open_global_id,
398 NTTIME now,
399 struct smbXsrv_open **_open)
400 {
401 struct smbXsrv_open_local_fetch_state state = {
402 .op = NULL,
403 .status = NT_STATUS_INTERNAL_ERROR,
404 };
405 uint8_t key_buf[SMBXSRV_OPEN_LOCAL_TDB_KEY_SIZE];
406 TDB_DATA key;
407 NTSTATUS status;
408
409 *_open = NULL;
410
411 if (open_local_id == 0) {
412 return NT_STATUS_FILE_CLOSED;
413 }
414
415 if (table == NULL) {
416 /* this might happen before the end of negprot */
417 return NT_STATUS_FILE_CLOSED;
418 }
419
420 if (table->local.db_ctx == NULL) {
421 return NT_STATUS_INTERNAL_ERROR;
422 }
423
424 key = smbXsrv_open_local_id_to_key(open_local_id, key_buf);
425
426 status = dbwrap_parse_record(table->local.db_ctx, key,
427 smbXsrv_open_local_fetch_parser,
428 &state);
429 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
430 return NT_STATUS_FILE_CLOSED;
431 } else if (!NT_STATUS_IS_OK(status)) {
432 return status;
433 }
434 if (!NT_STATUS_IS_OK(state.status)) {
435 return state.status;
436 }
437
438 if (NT_STATUS_EQUAL(state.op->status, NT_STATUS_FILE_CLOSED)) {
439 return NT_STATUS_FILE_CLOSED;
440 }
441
442 if (open_global_id == 0) {
443 /* make the global check a no-op for SMB1 */
444 open_global_id = state.op->global->open_global_id;
445 }
446
447 if (state.op->global->open_global_id != open_global_id) {
448 return NT_STATUS_FILE_CLOSED;
449 }
450
451 if (now != 0) {
452 state.op->idle_time = now;
453 }
454
455 *_open = state.op;
456 return state.op->status;
457 }
458
459 static int smbXsrv_open_global_destructor(struct smbXsrv_open_global0 *global)
460 {
461 return 0;
462 }
463
464 static void smbXsrv_open_global_verify_record(struct db_record *db_rec,
465 bool *is_free,
466 bool *was_free,
467 TALLOC_CTX *mem_ctx,
468 struct smbXsrv_open_global0 **_g);
469
470 static NTSTATUS smbXsrv_open_global_allocate(struct db_context *db,
471 TALLOC_CTX *mem_ctx,
472 struct smbXsrv_open_global0 **_global)
473 {
474 uint32_t i;
475 struct smbXsrv_open_global0 *global = NULL;
476 uint32_t last_free = 0;
477 const uint32_t min_tries = 3;
478
479 *_global = NULL;
480
481 global = talloc_zero(mem_ctx, struct smbXsrv_open_global0);
482 if (global == NULL) {
483 return NT_STATUS_NO_MEMORY;
484 }
485 talloc_set_destructor(global, smbXsrv_open_global_destructor);
486
487 /*
488 * Here we just randomly try the whole 32-bit space
489 *
490 * We use just 32-bit, because we want to reuse the
491 * ID for SRVSVC.
492 */
493 for (i = 0; i < UINT32_MAX; i++) {
494 bool is_free = false;
495 bool was_free = false;
496 uint32_t id;
497 uint8_t key_buf[SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE];
498 TDB_DATA key;
499
500 if (i >= min_tries && last_free != 0) {
501 id = last_free;
502 } else {
503 id = generate_random();
504 }
505 if (id == 0) {
506 id++;
507 }
508 if (id == UINT32_MAX) {
509 id--;
510 }
511
512 key = smbXsrv_open_global_id_to_key(id, key_buf);
513
514 global->db_rec = dbwrap_fetch_locked(db, mem_ctx, key);
515 if (global->db_rec == NULL) {
516 talloc_free(global);
517 return NT_STATUS_INSUFFICIENT_RESOURCES;
518 }
519
520 smbXsrv_open_global_verify_record(global->db_rec,
521 &is_free,
522 &was_free,
523 NULL, NULL);
524
525 if (!is_free) {
526 TALLOC_FREE(global->db_rec);
527 continue;
528 }
529
530 if (!was_free && i < min_tries) {
531 /*
532 * The session_id is free now,
533 * but was not free before.
534 *
535 * This happens if a smbd crashed
536 * and did not cleanup the record.
537 *
538 * If this is one of our first tries,
539 * then we try to find a real free one.
540 */
541 if (last_free == 0) {
542 last_free = id;
543 }
544 TALLOC_FREE(global->db_rec);
545 continue;
546 }
547
548 global->open_global_id = id;
549
550 *_global = global;
551 return NT_STATUS_OK;
552 }
553
554 /* should not be reached */
555 talloc_free(global);
556 return NT_STATUS_INTERNAL_ERROR;
557 }
558
559 static void smbXsrv_open_global_verify_record(struct db_record *db_rec,
560 bool *is_free,
561 bool *was_free,
562 TALLOC_CTX *mem_ctx,
563 struct smbXsrv_open_global0 **_g)
564 {
565 TDB_DATA key;
566 TDB_DATA val;
567 DATA_BLOB blob;
568 struct smbXsrv_open_globalB global_blob;
569 enum ndr_err_code ndr_err;
570 struct smbXsrv_open_global0 *global = NULL;
571 bool exists;
572 TALLOC_CTX *frame = talloc_stackframe();
573
574 *is_free = false;
575
576 if (was_free) {
577 *was_free = false;
578 }
579 if (_g) {
580 *_g = NULL;
581 }
582
583 key = dbwrap_record_get_key(db_rec);
584
585 val = dbwrap_record_get_value(db_rec);
586 if (val.dsize == 0) {
587 DEBUG(10, ("%s: empty value\n", __func__));
588 TALLOC_FREE(frame);
589 *is_free = true;
590 if (was_free) {
591 *was_free = true;
592 }
593 return;
594 }
595
596 blob = data_blob_const(val.dptr, val.dsize);
597
598 ndr_err = ndr_pull_struct_blob(&blob, frame, &global_blob,
599 (ndr_pull_flags_fn_t)ndr_pull_smbXsrv_open_globalB);
600 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
601 NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
602 DEBUG(1,("smbXsrv_open_global_verify_record: "
603 "key '%s' ndr_pull_struct_blob - %s\n",
604 hex_encode_talloc(frame, key.dptr, key.dsize),
605 nt_errstr(status)));
606 TALLOC_FREE(frame);
607 return;
608 }
609
610 DEBUG(10,("smbXsrv_open_global_verify_record\n"));
611 if (CHECK_DEBUGLVL(10)) {
612 NDR_PRINT_DEBUG(smbXsrv_open_globalB, &global_blob);
613 }
614
615 if (global_blob.version != SMBXSRV_VERSION_0) {
616 DEBUG(0,("smbXsrv_open_global_verify_record: "
617 "key '%s' use unsupported version %u\n",
618 hex_encode_talloc(frame, key.dptr, key.dsize),
619 global_blob.version));
620 NDR_PRINT_DEBUG(smbXsrv_open_globalB, &global_blob);
621 TALLOC_FREE(frame);
622 return;
623 }
624
625 global = global_blob.info.info0;
626
627 if (server_id_is_disconnected(&global->server_id)) {
628 exists = true;
629 } else {
630 exists = serverid_exists(&global->server_id);
631 }
632 if (!exists) {
633 struct server_id_buf idbuf;
634 DEBUG(2,("smbXsrv_open_global_verify_record: "
635 "key '%s' server_id %s does not exist.\n",
636 hex_encode_talloc(frame, key.dptr, key.dsize),
637 server_id_str_buf(global->server_id, &idbuf)));
638 if (CHECK_DEBUGLVL(2)) {
639 NDR_PRINT_DEBUG(smbXsrv_open_globalB, &global_blob);
640 }
641 TALLOC_FREE(frame);
642 dbwrap_record_delete(db_rec);
643 *is_free = true;
644 return;
645 }
646
647 if (_g) {
648 *_g = talloc_move(mem_ctx, &global);
649 }
650 TALLOC_FREE(frame);
651 }
652
653 static NTSTATUS smbXsrv_open_global_store(struct smbXsrv_open_global0 *global)
654 {
655 struct smbXsrv_open_globalB global_blob;
656 DATA_BLOB blob = data_blob_null;
657 TDB_DATA key;
658 TDB_DATA val;
659 NTSTATUS status;
660 enum ndr_err_code ndr_err;
661
662 /*
663 * TODO: if we use other versions than '0'
664 * we would add glue code here, that would be able to
665 * store the information in the old format.
666 */
667
668 if (global->db_rec == NULL) {
669 return NT_STATUS_INTERNAL_ERROR;
670 }
671
672 key = dbwrap_record_get_key(global->db_rec);
673 val = dbwrap_record_get_value(global->db_rec);
674
675 ZERO_STRUCT(global_blob);
676 global_blob.version = smbXsrv_version_global_current();
677 if (val.dsize >= 8) {
678 global_blob.seqnum = IVAL(val.dptr, 4);
679 }
680 global_blob.seqnum += 1;
681 global_blob.info.info0 = global;
682
683 ndr_err = ndr_push_struct_blob(&blob, global->db_rec, &global_blob,
684 (ndr_push_flags_fn_t)ndr_push_smbXsrv_open_globalB);
685 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
686 status = ndr_map_error2ntstatus(ndr_err);
687 DEBUG(1,("smbXsrv_open_global_store: key '%s' ndr_push - %s\n",
688 hex_encode_talloc(global->db_rec, key.dptr, key.dsize),
689 nt_errstr(status)));
690 TALLOC_FREE(global->db_rec);
691 return status;
692 }
693
694 val = make_tdb_data(blob.data, blob.length);
695 status = dbwrap_record_store(global->db_rec, val, TDB_REPLACE);
696 if (!NT_STATUS_IS_OK(status)) {
697 DEBUG(1,("smbXsrv_open_global_store: key '%s' store - %s\n",
698 hex_encode_talloc(global->db_rec, key.dptr, key.dsize),
699 nt_errstr(status)));
700 TALLOC_FREE(global->db_rec);
701 return status;
702 }
703
704 if (CHECK_DEBUGLVL(10)) {
705 DEBUG(10,("smbXsrv_open_global_store: key '%s' stored\n",
706 hex_encode_talloc(global->db_rec, key.dptr, key.dsize)));
707 NDR_PRINT_DEBUG(smbXsrv_open_globalB, &global_blob);
708 }
709
710 TALLOC_FREE(global->db_rec);
711
712 return NT_STATUS_OK;
713 }
714
715 static NTSTATUS smbXsrv_open_global_lookup(struct smbXsrv_open_table *table,
716 uint32_t open_global_id,
717 TALLOC_CTX *mem_ctx,
718 struct smbXsrv_open_global0 **_global)
719 {
720 TDB_DATA key;
721 uint8_t key_buf[SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE];
722 struct db_record *global_rec = NULL;
723 bool is_free = false;
724
725 *_global = NULL;
726
727 if (table->global.db_ctx == NULL) {
728 return NT_STATUS_INTERNAL_ERROR;
729 }
730
731 key = smbXsrv_open_global_id_to_key(open_global_id, key_buf);
732
733 global_rec = dbwrap_fetch_locked(table->global.db_ctx, mem_ctx, key);
734 if (global_rec == NULL) {
735 DEBUG(0, ("smbXsrv_open_global_lookup(0x%08x): "
736 "Failed to lock global key '%s'\n",
737 open_global_id,
738 hex_encode_talloc(talloc_tos(), key.dptr,
739 key.dsize)));
740 return NT_STATUS_INTERNAL_DB_ERROR;
741 }
742
743 smbXsrv_open_global_verify_record(global_rec,
744 &is_free,
745 NULL,
746 mem_ctx,
747 _global);
748 if (is_free) {
749 DEBUG(10, ("%s: is_free=true\n", __func__));
750 talloc_free(global_rec);
751 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
752 }
753
754 (*_global)->db_rec = talloc_move(*_global, &global_rec);
755
756 talloc_set_destructor(*_global, smbXsrv_open_global_destructor);
757
758 return NT_STATUS_OK;
759 }
760
761 static int smbXsrv_open_destructor(struct smbXsrv_open *op)
762 {
763 NTSTATUS status;
764
765 status = smbXsrv_open_close(op, 0);
766 if (!NT_STATUS_IS_OK(status)) {
767 DEBUG(0, ("smbXsrv_open_destructor: "
768 "smbXsrv_open_close() failed - %s\n",
769 nt_errstr(status)));
770 }
771
772 TALLOC_FREE(op->global);
773
774 return 0;
775 }
776
777 NTSTATUS smbXsrv_open_create(struct smbXsrv_connection *conn,
778 struct auth_session_info *session_info,
779 NTTIME now,
780 struct smbXsrv_open **_open)
781 {
782 struct smbXsrv_open_table *table = conn->client->open_table;
783 struct db_record *local_rec = NULL;
784 struct smbXsrv_open *op = NULL;
785 void *ptr = NULL;
786 TDB_DATA val;
787 struct smbXsrv_open_global0 *global = NULL;
788 NTSTATUS status;
789 struct dom_sid *current_sid = NULL;
790 struct security_token *current_token = NULL;
791
792 if (session_info == NULL) {
793 return NT_STATUS_INVALID_HANDLE;
794 }
795 current_token = session_info->security_token;
796
797 if (current_token == NULL) {
798 return NT_STATUS_INVALID_HANDLE;
799 }
800
801 if (current_token->num_sids > PRIMARY_USER_SID_INDEX) {
802 current_sid = &current_token->sids[PRIMARY_USER_SID_INDEX];
803 }
804
805 if (current_sid == NULL) {
806 return NT_STATUS_INVALID_HANDLE;
807 }
808
809 if (table->local.num_opens >= table->local.max_opens) {
810 return NT_STATUS_INSUFFICIENT_RESOURCES;
811 }
812
813 op = talloc_zero(table, struct smbXsrv_open);
814 if (op == NULL) {
815 return NT_STATUS_NO_MEMORY;
816 }
817 op->table = table;
818 op->status = NT_STATUS_OK; /* TODO: start with INTERNAL_ERROR */
819 op->idle_time = now;
820
821 status = smbXsrv_open_global_allocate(table->global.db_ctx,
822 op, &global);
823 if (!NT_STATUS_IS_OK(status)) {
824 TALLOC_FREE(op);
825 return status;
826 }
827 op->global = global;
828
829 status = smbXsrv_open_local_allocate_id(table->local.db_ctx,
830 table->local.lowest_id,
831 table->local.highest_id,
832 op,
833 &local_rec,
834 &op->local_id);
835 if (!NT_STATUS_IS_OK(status)) {
836 TALLOC_FREE(op);
837 return status;
838 }
839
840 global->open_persistent_id = global->open_global_id;
841 global->open_volatile_id = op->local_id;
842
843 global->server_id = messaging_server_id(conn->msg_ctx);
844 global->open_time = now;
845 global->open_owner = *current_sid;
846 if (conn->protocol >= PROTOCOL_SMB2_10) {
847 global->client_guid = conn->smb2.client.guid;
848 }
849
850 ptr = op;
851 val = make_tdb_data((uint8_t const *)&ptr, sizeof(ptr));
852 status = dbwrap_record_store(local_rec, val, TDB_REPLACE);
853 TALLOC_FREE(local_rec);
854 if (!NT_STATUS_IS_OK(status)) {
855 TALLOC_FREE(op);
856 return status;
857 }
858 table->local.num_opens += 1;
859
860 talloc_set_destructor(op, smbXsrv_open_destructor);
861
862 status = smbXsrv_open_global_store(global);
863 if (!NT_STATUS_IS_OK(status)) {
864 DEBUG(0,("smbXsrv_open_create: "
865 "global_id (0x%08x) store failed - %s\n",
866 op->global->open_global_id,
867 nt_errstr(status)));
868 TALLOC_FREE(op);
869 return status;
870 }
871
872 if (CHECK_DEBUGLVL(10)) {
873 struct smbXsrv_openB open_blob;
874
875 ZERO_STRUCT(open_blob);
876 open_blob.version = SMBXSRV_VERSION_0;
877 open_blob.info.info0 = op;
878
879 DEBUG(10,("smbXsrv_open_create: global_id (0x%08x) stored\n",
880 op->global->open_global_id));
881 NDR_PRINT_DEBUG(smbXsrv_openB, &open_blob);
882 }
883
884 *_open = op;
885 return NT_STATUS_OK;
886 }
887
888 uint32_t smbXsrv_open_hash(struct smbXsrv_open *_open)
889 {
890 uint8_t buf[8+8+8];
891 uint32_t ret;
892 TDB_DATA key;
893
894 SBVAL(buf, 0, _open->global->open_persistent_id);
895 SBVAL(buf, 8, _open->global->open_volatile_id);
896 SBVAL(buf, 16, _open->global->open_time);
897
898 key = (TDB_DATA) { .dptr = buf, .dsize = sizeof(buf) };
899 ret = tdb_jenkins_hash(&key);
900
901 if (ret == 0) {
902 ret = 1;
903 }
904
905 return ret;
906 }
907
908 NTSTATUS smbXsrv_open_update(struct smbXsrv_open *op)
909 {
910 struct smbXsrv_open_table *table = op->table;
911 NTSTATUS status;
912 uint8_t key_buf[SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE];
913 TDB_DATA key;
914
915 if (op->global->db_rec != NULL) {
916 DEBUG(0, ("smbXsrv_open_update(0x%08x): "
917 "Called with db_rec != NULL'\n",
918 op->global->open_global_id));
919 return NT_STATUS_INTERNAL_ERROR;
920 }
921
922 key = smbXsrv_open_global_id_to_key(op->global->open_global_id,
923 key_buf);
924
925 op->global->db_rec = dbwrap_fetch_locked(table->global.db_ctx,
926 op->global, key);
927 if (op->global->db_rec == NULL) {
928 DEBUG(0, ("smbXsrv_open_update(0x%08x): "
929 "Failed to lock global key '%s'\n",
930 op->global->open_global_id,
931 hex_encode_talloc(talloc_tos(), key.dptr,
932 key.dsize)));
933 return NT_STATUS_INTERNAL_DB_ERROR;
934 }
935
936 status = smbXsrv_open_global_store(op->global);
937 if (!NT_STATUS_IS_OK(status)) {
938 DEBUG(0,("smbXsrv_open_update: "
939 "global_id (0x%08x) store failed - %s\n",
940 op->global->open_global_id,
941 nt_errstr(status)));
942 return status;
943 }
944
945 if (CHECK_DEBUGLVL(10)) {
946 struct smbXsrv_openB open_blob;
947
948 ZERO_STRUCT(open_blob);
949 open_blob.version = SMBXSRV_VERSION_0;
950 open_blob.info.info0 = op;
951
952 DEBUG(10,("smbXsrv_open_update: global_id (0x%08x) stored\n",
953 op->global->open_global_id));
954 NDR_PRINT_DEBUG(smbXsrv_openB, &open_blob);
955 }
956
957 return NT_STATUS_OK;
958 }
959
960 NTSTATUS smbXsrv_open_close(struct smbXsrv_open *op, NTTIME now)
961 {
962 struct smbXsrv_open_table *table;
963 struct db_record *local_rec = NULL;
964 struct db_record *global_rec = NULL;
965 NTSTATUS status;
966 NTSTATUS error = NT_STATUS_OK;
967
968 if (op->table == NULL) {
969 return NT_STATUS_OK;
970 }
971
972 table = op->table;
973 op->table = NULL;
974
975 op->status = NT_STATUS_FILE_CLOSED;
976 op->global->disconnect_time = now;
977 server_id_set_disconnected(&op->global->server_id);
978
979 global_rec = op->global->db_rec;
980 op->global->db_rec = NULL;
981 if (global_rec == NULL) {
982 uint8_t key_buf[SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE];
983 TDB_DATA key;
984
985 key = smbXsrv_open_global_id_to_key(
986 op->global->open_global_id,
987 key_buf);
988
989 global_rec = dbwrap_fetch_locked(table->global.db_ctx,
990 op->global, key);
991 if (global_rec == NULL) {
992 DEBUG(0, ("smbXsrv_open_close(0x%08x): "
993 "Failed to lock global key '%s'\n",
994 op->global->open_global_id,
995 hex_encode_talloc(global_rec, key.dptr,
996 key.dsize)));
997 error = NT_STATUS_INTERNAL_ERROR;
998 }
999 }
1000
1001 if (global_rec != NULL && op->global->durable) {
1002 /*
1003 * If it is a durable open we need to update the global part
1004 * instead of deleting it
1005 */
1006 op->global->db_rec = global_rec;
1007 status = smbXsrv_open_global_store(op->global);
1008 if (NT_STATUS_IS_OK(status)) {
1009 /*
1010 * smbXsrv_open_global_store does the free
1011 * of op->global->db_rec
1012 */
1013 global_rec = NULL;
1014 }
1015 if (!NT_STATUS_IS_OK(status)) {
1016 DEBUG(0,("smbXsrv_open_close(0x%08x)"
1017 "smbXsrv_open_global_store() failed - %s\n",
1018 op->global->open_global_id,
1019 nt_errstr(status)));
1020 error = status;
1021 }
1022
1023 if (NT_STATUS_IS_OK(status) && CHECK_DEBUGLVL(10)) {
1024 struct smbXsrv_openB open_blob;
1025
1026 ZERO_STRUCT(open_blob);
1027 open_blob.version = SMBXSRV_VERSION_0;
1028 open_blob.info.info0 = op;
1029
1030 DEBUG(10,("smbXsrv_open_close(0x%08x): "
1031 "stored disconnect\n",
1032 op->global->open_global_id));
1033 NDR_PRINT_DEBUG(smbXsrv_openB, &open_blob);
1034 }
1035 }
1036
1037 if (global_rec != NULL) {
1038 status = dbwrap_record_delete(global_rec);
1039 if (!NT_STATUS_IS_OK(status)) {
1040 TDB_DATA key = dbwrap_record_get_key(global_rec);
1041
1042 DEBUG(0, ("smbXsrv_open_close(0x%08x): "
1043 "failed to delete global key '%s': %s\n",
1044 op->global->open_global_id,
1045 hex_encode_talloc(global_rec, key.dptr,
1046 key.dsize),
1047 nt_errstr(status)));
1048 error = status;
1049 }
1050 }
1051 TALLOC_FREE(global_rec);
1052
1053 local_rec = op->db_rec;
1054 if (local_rec == NULL) {
1055 uint8_t key_buf[SMBXSRV_OPEN_LOCAL_TDB_KEY_SIZE];
1056 TDB_DATA key;
1057
1058 key = smbXsrv_open_local_id_to_key(op->local_id, key_buf);
1059
1060 local_rec = dbwrap_fetch_locked(table->local.db_ctx,
1061 op, key);
1062 if (local_rec == NULL) {
1063 DEBUG(0, ("smbXsrv_open_close(0x%08x): "
1064 "Failed to lock local key '%s'\n",
1065 op->global->open_global_id,
1066 hex_encode_talloc(local_rec, key.dptr,
1067 key.dsize)));
1068 error = NT_STATUS_INTERNAL_ERROR;
1069 }
1070 }
1071
1072 if (local_rec != NULL) {
1073 status = dbwrap_record_delete(local_rec);
1074 if (!NT_STATUS_IS_OK(status)) {
1075 TDB_DATA key = dbwrap_record_get_key(local_rec);
1076
1077 DEBUG(0, ("smbXsrv_open_close(0x%08x): "
1078 "failed to delete local key '%s': %s\n",
1079 op->global->open_global_id,
1080 hex_encode_talloc(local_rec, key.dptr,
1081 key.dsize),
1082 nt_errstr(status)));
1083 error = status;
1084 }
1085 table->local.num_opens -= 1;
1086 }
1087 if (op->db_rec == NULL) {
1088 TALLOC_FREE(local_rec);
1089 }
1090 op->db_rec = NULL;
1091
1092 if (op->compat) {
1093 op->compat->op = NULL;
1094 file_free(NULL, op->compat);
1095 op->compat = NULL;
1096 }
1097
1098 return error;
1099 }
1100
1101 NTSTATUS smb1srv_open_table_init(struct smbXsrv_connection *conn)
1102 {
1103 uint32_t max_opens;
1104
1105 /*
1106 * Allow a range from 1..65534.
1107 *
1108 * With real_max_open_files possible ids,
1109 * truncated to the SMB1 limit of 16-bit.
1110 *
1111 * 0 and 0xFFFF are no valid ids.
1112 */
1113 max_opens = conn->client->sconn->real_max_open_files;
1114 max_opens = MIN(max_opens, UINT16_MAX - 1);
1115
1116 return smbXsrv_open_table_init(conn, 1, UINT16_MAX - 1, max_opens);
1117 }
1118
1119 NTSTATUS smb1srv_open_lookup(struct smbXsrv_connection *conn,
1120 uint16_t fnum, NTTIME now,
1121 struct smbXsrv_open **_open)
1122 {
1123 struct smbXsrv_open_table *table = conn->client->open_table;
1124 uint32_t local_id = fnum;
1125 uint32_t global_id = 0;
1126
1127 return smbXsrv_open_local_lookup(table, local_id, global_id, now, _open);
1128 }
1129
1130 NTSTATUS smb2srv_open_table_init(struct smbXsrv_connection *conn)
1131 {
1132 uint32_t max_opens;
1133
1134 /*
1135 * Allow a range from 1..4294967294.
1136 *
1137 * With real_max_open_files possible ids,
1138 * truncated to 16-bit (the same as SMB1 for now).
1139 *
1140 * 0 and 0xFFFFFFFF are no valid ids.
1141 *
1142 * The usage of conn->sconn->real_max_open_files
1143 * is the reason that we use one open table per
1144 * transport connection (as we still have a 1:1 mapping
1145 * between process and transport connection).
1146 */
1147 max_opens = conn->client->sconn->real_max_open_files;
1148 max_opens = MIN(max_opens, UINT16_MAX - 1);
1149
1150 return smbXsrv_open_table_init(conn, 1, UINT32_MAX - 1, max_opens);
1151 }
1152
1153 NTSTATUS smb2srv_open_lookup(struct smbXsrv_connection *conn,
1154 uint64_t persistent_id,
1155 uint64_t volatile_id,
1156 NTTIME now,
1157 struct smbXsrv_open **_open)
1158 {
1159 struct smbXsrv_open_table *table = conn->client->open_table;
1160 uint32_t local_id = volatile_id & UINT32_MAX;
1161 uint64_t local_zeros = volatile_id & 0xFFFFFFFF00000000LLU;
1162 uint32_t global_id = persistent_id & UINT32_MAX;
1163 uint64_t global_zeros = persistent_id & 0xFFFFFFFF00000000LLU;
1164
1165 if (local_zeros != 0) {
1166 return NT_STATUS_FILE_CLOSED;
1167 }
1168
1169 if (global_zeros != 0) {
1170 return NT_STATUS_FILE_CLOSED;
1171 }
1172
1173 if (global_id == 0) {
1174 return NT_STATUS_FILE_CLOSED;
1175 }
1176
1177 return smbXsrv_open_local_lookup(table, local_id, global_id, now, _open);
1178 }
1179
1180 NTSTATUS smb2srv_open_recreate(struct smbXsrv_connection *conn,
1181 struct auth_session_info *session_info,
1182 uint64_t persistent_id,
1183 const struct GUID *create_guid,
1184 NTTIME now,
1185 struct smbXsrv_open **_open)
1186 {
1187 struct smbXsrv_open_table *table = conn->client->open_table;
1188 struct db_record *local_rec = NULL;
1189 struct smbXsrv_open *op = NULL;
1190 void *ptr = NULL;
1191 TDB_DATA val;
1192 uint32_t global_id = persistent_id & UINT32_MAX;
1193 uint64_t global_zeros = persistent_id & 0xFFFFFFFF00000000LLU;
1194 NTSTATUS status;
1195 struct security_token *current_token = NULL;
1196
1197 if (session_info == NULL) {
1198 DEBUG(10, ("session_info=NULL\n"));
1199 return NT_STATUS_INVALID_HANDLE;
1200 }
1201 current_token = session_info->security_token;
1202
1203 if (current_token == NULL) {
1204 DEBUG(10, ("current_token=NULL\n"));
1205 return NT_STATUS_INVALID_HANDLE;
1206 }
1207
1208 if (global_zeros != 0) {
1209 DEBUG(10, ("global_zeros!=0\n"));
1210 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1211 }
1212
1213 op = talloc_zero(table, struct smbXsrv_open);
1214 if (op == NULL) {
1215 return NT_STATUS_NO_MEMORY;
1216 }
1217 op->table = table;
1218
1219 status = smbXsrv_open_global_lookup(table, global_id, op, &op->global);
1220 if (!NT_STATUS_IS_OK(status)) {
1221 TALLOC_FREE(op);
1222 DEBUG(10, ("smbXsrv_open_global_lookup returned %s\n",
1223 nt_errstr(status)));
1224 return status;
1225 }
1226
1227 /*
1228 * If the provided create_guid is NULL, this means that
1229 * the reconnect request was a v1 request. In that case
1230 * we should skipt the create GUID verification, since
1231 * it is valid to v1-reconnect a v2-opened handle.
1232 */
1233 if ((create_guid != NULL) &&
1234 !GUID_equal(&op->global->create_guid, create_guid))
1235 {
1236 TALLOC_FREE(op);
1237 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1238 }
1239
1240 if (!security_token_is_sid(current_token, &op->global->open_owner)) {
1241 TALLOC_FREE(op);
1242 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1243 }
1244
1245 if (!op->global->durable) {
1246 TALLOC_FREE(op);
1247 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1248 }
1249
1250 if (table->local.num_opens >= table->local.max_opens) {
1251 TALLOC_FREE(op);
1252 return NT_STATUS_INSUFFICIENT_RESOURCES;
1253 }
1254
1255 status = smbXsrv_open_local_allocate_id(table->local.db_ctx,
1256 table->local.lowest_id,
1257 table->local.highest_id,
1258 op,
1259 &local_rec,
1260 &op->local_id);
1261 if (!NT_STATUS_IS_OK(status)) {
1262 TALLOC_FREE(op);
1263 return status;
1264 }
1265
1266 op->idle_time = now;
1267 op->status = NT_STATUS_FILE_CLOSED;
1268
1269 op->global->open_volatile_id = op->local_id;
1270 op->global->server_id = messaging_server_id(conn->msg_ctx);
1271
1272 ptr = op;
1273 val = make_tdb_data((uint8_t const *)&ptr, sizeof(ptr));
1274 status = dbwrap_record_store(local_rec, val, TDB_REPLACE);
1275 TALLOC_FREE(local_rec);
1276 if (!NT_STATUS_IS_OK(status)) {
1277 TALLOC_FREE(op);
1278 return status;
1279 }
1280 table->local.num_opens += 1;
1281
1282 talloc_set_destructor(op, smbXsrv_open_destructor);
1283
1284 status = smbXsrv_open_global_store(op->global);
1285 if (!NT_STATUS_IS_OK(status)) {
1286 TALLOC_FREE(op);
1287 return status;
1288 }
1289
1290 if (CHECK_DEBUGLVL(10)) {
1291 struct smbXsrv_openB open_blob;
1292
1293 ZERO_STRUCT(open_blob);
1294 open_blob.version = 0;
1295 open_blob.info.info0 = op;
1296
1297 DEBUG(10,("smbXsrv_open_recreate: global_id (0x%08x) stored\n",
1298 op->global->open_global_id));
1299 NDR_PRINT_DEBUG(smbXsrv_openB, &open_blob);
1300 }
1301
1302 *_open = op;
1303 return NT_STATUS_OK;
1304 }
1305
1306
1307 static NTSTATUS smbXsrv_open_global_parse_record(TALLOC_CTX *mem_ctx,
1308 struct db_record *rec,
1309 struct smbXsrv_open_global0 **global)
1310 {
1311 TDB_DATA key = dbwrap_record_get_key(rec);
1312 TDB_DATA val = dbwrap_record_get_value(rec);
1313 DATA_BLOB blob = data_blob_const(val.dptr, val.dsize);
1314 struct smbXsrv_open_globalB global_blob;
1315 enum ndr_err_code ndr_err;
1316 NTSTATUS status;
1317 TALLOC_CTX *frame = talloc_stackframe();
1318
1319 ndr_err = ndr_pull_struct_blob(&blob, frame, &global_blob,
1320 (ndr_pull_flags_fn_t)ndr_pull_smbXsrv_open_globalB);
1321 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1322 DEBUG(1,("Invalid record in smbXsrv_open_global.tdb:"
1323 "key '%s' ndr_pull_struct_blob - %s\n",
1324 hex_encode_talloc(frame, key.dptr, key.dsize),
1325 ndr_errstr(ndr_err)));
1326 status = ndr_map_error2ntstatus(ndr_err);
1327 goto done;
1328 }
1329
1330 if (global_blob.version != SMBXSRV_VERSION_0) {
1331 status = NT_STATUS_INTERNAL_DB_CORRUPTION;
1332 DEBUG(1,("Invalid record in smbXsrv_open_global.tdb:"
1333 "key '%s' unsuported version - %d - %s\n",
1334 hex_encode_talloc(frame, key.dptr, key.dsize),
1335 (int)global_blob.version,
1336 nt_errstr(status)));
1337 goto done;
1338 }
1339
1340 *global = talloc_move(mem_ctx, &global_blob.info.info0);
1341 status = NT_STATUS_OK;
1342 done:
1343 talloc_free(frame);
1344 return status;
1345 }
1346
1347 struct smbXsrv_open_global_traverse_state {
1348 int (*fn)(struct smbXsrv_open_global0 *, void *);
1349 void *private_data;
1350 };
1351
1352 static int smbXsrv_open_global_traverse_fn(struct db_record *rec, void *data)
1353 {
1354 struct smbXsrv_open_global_traverse_state *state =
1355 (struct smbXsrv_open_global_traverse_state*)data;
1356 struct smbXsrv_open_global0 *global = NULL;
1357 NTSTATUS status;
1358 int ret = -1;
1359
1360 status = smbXsrv_open_global_parse_record(talloc_tos(), rec, &global);
1361 if (!NT_STATUS_IS_OK(status)) {
1362 return -1;
1363 }
1364
1365 global->db_rec = rec;
1366 ret = state->fn(global, state->private_data);
1367 talloc_free(global);
1368 return ret;
1369 }
1370
1371 NTSTATUS smbXsrv_open_global_traverse(
1372 int (*fn)(struct smbXsrv_open_global0 *, void *),
1373 void *private_data)
1374 {
1375
1376 NTSTATUS status;
1377 int count = 0;
1378 struct smbXsrv_open_global_traverse_state state = {
1379 .fn = fn,
1380 .private_data = private_data,
1381 };
1382
1383 become_root();
1384 status = smbXsrv_open_global_init();
1385 if (!NT_STATUS_IS_OK(status)) {
1386 unbecome_root();
1387 DEBUG(0, ("Failed to initialize open_global: %s\n",
1388 nt_errstr(status)));
1389 return status;
1390 }
1391
1392 status = dbwrap_traverse_read(smbXsrv_open_global_db_ctx,
1393 smbXsrv_open_global_traverse_fn,
1394 &state,
1395 &count);
1396 unbecome_root();
1397
1398 return status;
1399 }
1400
1401 NTSTATUS smbXsrv_open_cleanup(uint64_t persistent_id)
1402 {
1403 NTSTATUS status = NT_STATUS_OK;
1404 TALLOC_CTX *frame = talloc_stackframe();
1405 struct smbXsrv_open_global0 *op = NULL;
1406 uint8_t key_buf[SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE];
1407 TDB_DATA key;
1408 TDB_DATA val;
1409 struct db_record *rec;
1410 bool delete_open = false;
1411 uint32_t global_id = persistent_id & UINT32_MAX;
1412
1413 key = smbXsrv_open_global_id_to_key(global_id, key_buf);
1414 rec = dbwrap_fetch_locked(smbXsrv_open_global_db_ctx, frame, key);
1415 if (rec == NULL) {
1416 status = NT_STATUS_NOT_FOUND;
1417 DEBUG(1, ("smbXsrv_open_cleanup[global: 0x%08x] "
1418 "failed to fetch record from %s - %s\n",
1419 global_id, dbwrap_name(smbXsrv_open_global_db_ctx),
1420 nt_errstr(status)));
1421 goto done;
1422 }
1423
1424 val = dbwrap_record_get_value(rec);
1425 if (val.dsize == 0) {
1426 DEBUG(10, ("smbXsrv_open_cleanup[global: 0x%08x] "
1427 "empty record in %s, skipping...\n",
1428 global_id, dbwrap_name(smbXsrv_open_global_db_ctx)));
1429 goto done;
1430 }
1431
1432 status = smbXsrv_open_global_parse_record(talloc_tos(), rec, &op);
1433 if (!NT_STATUS_IS_OK(status)) {
1434 DEBUG(1, ("smbXsrv_open_cleanup[global: 0x%08x] "
1435 "failed to read record: %s\n",
1436 global_id, nt_errstr(status)));
1437 goto done;
1438 }
1439
1440 if (server_id_is_disconnected(&op->server_id)) {
1441 struct timeval now, disconnect_time;
1442 int64_t tdiff;
1443 now = timeval_current();
1444 nttime_to_timeval(&disconnect_time, op->disconnect_time);
1445 tdiff = usec_time_diff(&now, &disconnect_time);
1446 delete_open = (tdiff >= 1000*op->durable_timeout_msec);
1447
1448 DEBUG(10, ("smbXsrv_open_cleanup[global: 0x%08x] "
1449 "disconnected at [%s] %us ago with "
1450 "timeout of %us -%s reached\n",
1451 global_id,
1452 nt_time_string(frame, op->disconnect_time),
1453 (unsigned)(tdiff/1000000),
1454 op->durable_timeout_msec / 1000,
1455 delete_open ? "" : " not"));
1456 } else if (!serverid_exists(&op->server_id)) {
1457 struct server_id_buf idbuf;
1458 DEBUG(10, ("smbXsrv_open_cleanup[global: 0x%08x] "
1459 "server[%s] does not exist\n",
1460 global_id,
1461 server_id_str_buf(op->server_id, &idbuf)));
1462 delete_open = true;
1463 }
1464
1465 if (!delete_open) {
1466 goto done;
1467 }
1468
1469 status = dbwrap_record_delete(rec);
1470 if (!NT_STATUS_IS_OK(status)) {
1471 DEBUG(1, ("smbXsrv_open_cleanup[global: 0x%08x] "
1472 "failed to delete record"
1473 "from %s: %s\n", global_id,
1474 dbwrap_name(smbXsrv_open_global_db_ctx),
1475 nt_errstr(status)));
1476 goto done;
1477 }
1478
1479 DEBUG(10, ("smbXsrv_open_cleanup[global: 0x%08x] "
1480 "delete record from %s\n",
1481 global_id,
1482 dbwrap_name(smbXsrv_open_global_db_ctx)));
1483
1484 done:
1485 talloc_free(frame);
1486 return status;
1487 }
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