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Fix the developer O3 build
[Samba.git] / source3 / smbd / smbXsrv_open.c
blob03b0123bba9120c212a0ae90946669cf1d38346f
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 <ccan/hash/hash.h>
33 #include "serverid.h"
34
35 struct smbXsrv_open_table {
36 struct {
37 struct db_context *db_ctx;
38 uint32_t lowest_id;
39 uint32_t highest_id;
40 uint32_t max_opens;
41 uint32_t num_opens;
42 } local;
43 struct {
44 struct db_context *db_ctx;
45 } global;
46 };
47
48 static struct db_context *smbXsrv_open_global_db_ctx = NULL;
49
50 NTSTATUS smbXsrv_open_global_init(void)
51 {
52 char *global_path = NULL;
53 struct db_context *db_ctx = NULL;
54
55 if (smbXsrv_open_global_db_ctx != NULL) {
56 return NT_STATUS_OK;
57 }
58
59 global_path = lock_path("smbXsrv_open_global.tdb");
60 if (global_path == NULL) {
61 return NT_STATUS_NO_MEMORY;
62 }
63
64 db_ctx = db_open(NULL, global_path,
65 0, /* hash_size */
66 TDB_DEFAULT |
67 TDB_CLEAR_IF_FIRST |
68 TDB_INCOMPATIBLE_HASH,
69 O_RDWR | O_CREAT, 0600,
70 DBWRAP_LOCK_ORDER_1,
71 DBWRAP_FLAG_NONE);
72 TALLOC_FREE(global_path);
73 if (db_ctx == NULL) {
74 NTSTATUS status;
75
76 status = map_nt_error_from_unix_common(errno);
77
78 return status;
79 }
80
81 smbXsrv_open_global_db_ctx = db_ctx;
82
83 return NT_STATUS_OK;
84 }
85
86 /*
87 * NOTE:
88 * We need to store the keys in big endian so that dbwrap_rbt's memcmp
89 * has the same result as integer comparison between the uint32_t
90 * values.
91 *
92 * TODO: implement string based key
93 */
94
95 #define SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE sizeof(uint32_t)
96
97 static TDB_DATA smbXsrv_open_global_id_to_key(uint32_t id,
98 uint8_t *key_buf)
99 {
100 TDB_DATA key;
101
102 RSIVAL(key_buf, 0, id);
103
104 key = make_tdb_data(key_buf, SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE);
105
106 return key;
107 }
108
109 #if 0
110 static NTSTATUS smbXsrv_open_global_key_to_id(TDB_DATA key, uint32_t *id)
111 {
112 if (id == NULL) {
113 return NT_STATUS_INVALID_PARAMETER;
114 }
115
116 if (key.dsize != SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE) {
117 return NT_STATUS_INTERNAL_DB_CORRUPTION;
118 }
119
120 *id = RIVAL(key.dptr, 0);
121
122 return NT_STATUS_OK;
123 }
124 #endif
125
126 #define SMBXSRV_OPEN_LOCAL_TDB_KEY_SIZE sizeof(uint32_t)
127
128 static TDB_DATA smbXsrv_open_local_id_to_key(uint32_t id,
129 uint8_t *key_buf)
130 {
131 TDB_DATA key;
132
133 RSIVAL(key_buf, 0, id);
134
135 key = make_tdb_data(key_buf, SMBXSRV_OPEN_LOCAL_TDB_KEY_SIZE);
136
137 return key;
138 }
139
140 static NTSTATUS smbXsrv_open_local_key_to_id(TDB_DATA key, uint32_t *id)
141 {
142 if (id == NULL) {
143 return NT_STATUS_INVALID_PARAMETER;
144 }
145
146 if (key.dsize != SMBXSRV_OPEN_LOCAL_TDB_KEY_SIZE) {
147 return NT_STATUS_INTERNAL_DB_CORRUPTION;
148 }
149
150 *id = RIVAL(key.dptr, 0);
151
152 return NT_STATUS_OK;
153 }
154
155 static NTSTATUS smbXsrv_open_table_init(struct smbXsrv_connection *conn,
156 uint32_t lowest_id,
157 uint32_t highest_id,
158 uint32_t max_opens)
159 {
160 struct smbXsrv_client *client = conn->client;
161 struct smbXsrv_open_table *table;
162 NTSTATUS status;
163 uint64_t max_range;
164
165 if (lowest_id > highest_id) {
166 return NT_STATUS_INTERNAL_ERROR;
167 }
168
169 max_range = highest_id;
170 max_range -= lowest_id;
171 max_range += 1;
172
173 if (max_opens > max_range) {
174 return NT_STATUS_INTERNAL_ERROR;
175 }
176
177 table = talloc_zero(client, struct smbXsrv_open_table);
178 if (table == NULL) {
179 return NT_STATUS_NO_MEMORY;
180 }
181
182 table->local.db_ctx = db_open_rbt(table);
183 if (table->local.db_ctx == NULL) {
184 TALLOC_FREE(table);
185 return NT_STATUS_NO_MEMORY;
186 }
187 table->local.lowest_id = lowest_id;
188 table->local.highest_id = highest_id;
189 table->local.max_opens = max_opens;
190
191 status = smbXsrv_open_global_init();
192 if (!NT_STATUS_IS_OK(status)) {
193 TALLOC_FREE(table);
194 return status;
195 }
196
197 table->global.db_ctx = smbXsrv_open_global_db_ctx;
198
199 client->open_table = table;
200 return NT_STATUS_OK;
201 }
202
203 struct smbXsrv_open_local_allocate_state {
204 const uint32_t lowest_id;
205 const uint32_t highest_id;
206 uint32_t last_id;
207 uint32_t useable_id;
208 NTSTATUS status;
209 };
210
211 static int smbXsrv_open_local_allocate_traverse(struct db_record *rec,
212 void *private_data)
213 {
214 struct smbXsrv_open_local_allocate_state *state =
215 (struct smbXsrv_open_local_allocate_state *)private_data;
216 TDB_DATA key = dbwrap_record_get_key(rec);
217 uint32_t id = 0;
218 NTSTATUS status;
219
220 status = smbXsrv_open_local_key_to_id(key, &id);
221 if (!NT_STATUS_IS_OK(status)) {
222 state->status = status;
223 return -1;
224 }
225
226 if (id <= state->last_id) {
227 state->status = NT_STATUS_INTERNAL_DB_CORRUPTION;
228 return -1;
229 }
230 state->last_id = id;
231
232 if (id > state->useable_id) {
233 state->status = NT_STATUS_OK;
234 return -1;
235 }
236
237 if (state->useable_id == state->highest_id) {
238 state->status = NT_STATUS_INSUFFICIENT_RESOURCES;
239 return -1;
240 }
241
242 state->useable_id +=1;
243 return 0;
244 }
245
246 static NTSTATUS smbXsrv_open_local_allocate_id(struct db_context *db,
247 uint32_t lowest_id,
248 uint32_t highest_id,
249 TALLOC_CTX *mem_ctx,
250 struct db_record **_rec,
251 uint32_t *_id)
252 {
253 struct smbXsrv_open_local_allocate_state state = {
254 .lowest_id = lowest_id,
255 .highest_id = highest_id,
256 .last_id = 0,
257 .useable_id = lowest_id,
258 .status = NT_STATUS_INTERNAL_ERROR,
259 };
260 uint32_t i;
261 uint32_t range;
262 NTSTATUS status;
263 int count = 0;
264
265 *_rec = NULL;
266 *_id = 0;
267
268 if (lowest_id > highest_id) {
269 return NT_STATUS_INSUFFICIENT_RESOURCES;
270 }
271
272 /*
273 * first we try randomly
274 */
275 range = (highest_id - lowest_id) + 1;
276
277 for (i = 0; i < (range / 2); i++) {
278 uint32_t id;
279 uint8_t key_buf[SMBXSRV_OPEN_LOCAL_TDB_KEY_SIZE];
280 TDB_DATA key;
281 TDB_DATA val;
282 struct db_record *rec = NULL;
283
284 id = generate_random() % range;
285 id += lowest_id;
286
287 if (id < lowest_id) {
288 id = lowest_id;
289 }
290 if (id > highest_id) {
291 id = highest_id;
292 }
293
294 key = smbXsrv_open_local_id_to_key(id, key_buf);
295
296 rec = dbwrap_fetch_locked(db, mem_ctx, key);
297 if (rec == NULL) {
298 return NT_STATUS_INSUFFICIENT_RESOURCES;
299 }
300
301 val = dbwrap_record_get_value(rec);
302 if (val.dsize != 0) {
303 TALLOC_FREE(rec);
304 continue;
305 }
306
307 *_rec = rec;
308 *_id = id;
309 return NT_STATUS_OK;
310 }
311
312 /*
313 * if the range is almost full,
314 * we traverse the whole table
315 * (this relies on sorted behavior of dbwrap_rbt)
316 */
317 status = dbwrap_traverse_read(db, smbXsrv_open_local_allocate_traverse,
318 &state, &count);
319 if (NT_STATUS_IS_OK(status)) {
320 if (NT_STATUS_IS_OK(state.status)) {
321 return NT_STATUS_INTERNAL_ERROR;
322 }
323
324 if (!NT_STATUS_EQUAL(state.status, NT_STATUS_INTERNAL_ERROR)) {
325 return state.status;
326 }
327
328 if (state.useable_id <= state.highest_id) {
329 state.status = NT_STATUS_OK;
330 } else {
331 return NT_STATUS_INSUFFICIENT_RESOURCES;
332 }
333 } else if (!NT_STATUS_EQUAL(status, NT_STATUS_INTERNAL_DB_CORRUPTION)) {
334 /*
335 * Here we really expect NT_STATUS_INTERNAL_DB_CORRUPTION!
336 *
337 * If we get anything else it is an error, because it
338 * means we did not manage to find a free slot in
339 * the db.
340 */
341 return NT_STATUS_INSUFFICIENT_RESOURCES;
342 }
343
344 if (NT_STATUS_IS_OK(state.status)) {
345 uint32_t id;
346 uint8_t key_buf[SMBXSRV_OPEN_LOCAL_TDB_KEY_SIZE];
347 TDB_DATA key;
348 TDB_DATA val;
349 struct db_record *rec = NULL;
350
351 id = state.useable_id;
352
353 key = smbXsrv_open_local_id_to_key(id, key_buf);
354
355 rec = dbwrap_fetch_locked(db, mem_ctx, key);
356 if (rec == NULL) {
357 return NT_STATUS_INSUFFICIENT_RESOURCES;
358 }
359
360 val = dbwrap_record_get_value(rec);
361 if (val.dsize != 0) {
362 TALLOC_FREE(rec);
363 return NT_STATUS_INTERNAL_DB_CORRUPTION;
364 }
365
366 *_rec = rec;
367 *_id = id;
368 return NT_STATUS_OK;
369 }
370
371 return state.status;
372 }
373
374 struct smbXsrv_open_local_fetch_state {
375 struct smbXsrv_open *op;
376 NTSTATUS status;
377 };
378
379 static void smbXsrv_open_local_fetch_parser(TDB_DATA key, TDB_DATA data,
380 void *private_data)
381 {
382 struct smbXsrv_open_local_fetch_state *state =
383 (struct smbXsrv_open_local_fetch_state *)private_data;
384 void *ptr;
385
386 if (data.dsize != sizeof(ptr)) {
387 state->status = NT_STATUS_INTERNAL_DB_ERROR;
388 return;
389 }
390
391 memcpy(&ptr, data.dptr, data.dsize);
392 state->op = talloc_get_type_abort(ptr, struct smbXsrv_open);
393 state->status = NT_STATUS_OK;
394 }
395
396 static NTSTATUS smbXsrv_open_local_lookup(struct smbXsrv_open_table *table,
397 uint32_t open_local_id,
398 uint32_t open_global_id,
399 NTTIME now,
400 struct smbXsrv_open **_open)
401 {
402 struct smbXsrv_open_local_fetch_state state = {
403 .op = NULL,
404 .status = NT_STATUS_INTERNAL_ERROR,
405 };
406 uint8_t key_buf[SMBXSRV_OPEN_LOCAL_TDB_KEY_SIZE];
407 TDB_DATA key;
408 NTSTATUS status;
409
410 *_open = NULL;
411
412 if (open_local_id == 0) {
413 return NT_STATUS_FILE_CLOSED;
414 }
415
416 if (table == NULL) {
417 /* this might happen before the end of negprot */
418 return NT_STATUS_FILE_CLOSED;
419 }
420
421 if (table->local.db_ctx == NULL) {
422 return NT_STATUS_INTERNAL_ERROR;
423 }
424
425 key = smbXsrv_open_local_id_to_key(open_local_id, key_buf);
426
427 status = dbwrap_parse_record(table->local.db_ctx, key,
428 smbXsrv_open_local_fetch_parser,
429 &state);
430 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
431 return NT_STATUS_FILE_CLOSED;
432 } else if (!NT_STATUS_IS_OK(status)) {
433 return status;
434 }
435 if (!NT_STATUS_IS_OK(state.status)) {
436 return state.status;
437 }
438
439 if (NT_STATUS_EQUAL(state.op->status, NT_STATUS_FILE_CLOSED)) {
440 return NT_STATUS_FILE_CLOSED;
441 }
442
443 if (open_global_id == 0) {
444 /* make the global check a no-op for SMB1 */
445 open_global_id = state.op->global->open_global_id;
446 }
447
448 if (state.op->global->open_global_id != open_global_id) {
449 return NT_STATUS_FILE_CLOSED;
450 }
451
452 if (now != 0) {
453 state.op->idle_time = now;
454 }
455
456 *_open = state.op;
457 return state.op->status;
458 }
459
460 static int smbXsrv_open_global_destructor(struct smbXsrv_open_global0 *global)
461 {
462 return 0;
463 }
464
465 static void smbXsrv_open_global_verify_record(struct db_record *db_rec,
466 bool *is_free,
467 bool *was_free,
468 TALLOC_CTX *mem_ctx,
469 struct smbXsrv_open_global0 **_g);
470
471 static NTSTATUS smbXsrv_open_global_allocate(struct db_context *db,
472 TALLOC_CTX *mem_ctx,
473 struct smbXsrv_open_global0 **_global)
474 {
475 uint32_t i;
476 struct smbXsrv_open_global0 *global = NULL;
477 uint32_t last_free = 0;
478 const uint32_t min_tries = 3;
479
480 *_global = NULL;
481
482 global = talloc_zero(mem_ctx, struct smbXsrv_open_global0);
483 if (global == NULL) {
484 return NT_STATUS_NO_MEMORY;
485 }
486 talloc_set_destructor(global, smbXsrv_open_global_destructor);
487
488 /*
489 * Here we just randomly try the whole 32-bit space
490 *
491 * We use just 32-bit, because we want to reuse the
492 * ID for SRVSVC.
493 */
494 for (i = 0; i < UINT32_MAX; i++) {
495 bool is_free = false;
496 bool was_free = false;
497 uint32_t id;
498 uint8_t key_buf[SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE];
499 TDB_DATA key;
500
501 if (i >= min_tries && last_free != 0) {
502 id = last_free;
503 } else {
504 id = generate_random();
505 }
506 if (id == 0) {
507 id++;
508 }
509 if (id == UINT32_MAX) {
510 id--;
511 }
512
513 key = smbXsrv_open_global_id_to_key(id, key_buf);
514
515 global->db_rec = dbwrap_fetch_locked(db, mem_ctx, key);
516 if (global->db_rec == NULL) {
517 talloc_free(global);
518 return NT_STATUS_INSUFFICIENT_RESOURCES;
519 }
520
521 smbXsrv_open_global_verify_record(global->db_rec,
522 &is_free,
523 &was_free,
524 NULL, NULL);
525
526 if (!is_free) {
527 TALLOC_FREE(global->db_rec);
528 continue;
529 }
530
531 if (!was_free && i < min_tries) {
532 /*
533 * The session_id is free now,
534 * but was not free before.
535 *
536 * This happens if a smbd crashed
537 * and did not cleanup the record.
538 *
539 * If this is one of our first tries,
540 * then we try to find a real free one.
541 */
542 if (last_free == 0) {
543 last_free = id;
544 }
545 TALLOC_FREE(global->db_rec);
546 continue;
547 }
548
549 global->open_global_id = id;
550
551 *_global = global;
552 return NT_STATUS_OK;
553 }
554
555 /* should not be reached */
556 talloc_free(global);
557 return NT_STATUS_INTERNAL_ERROR;
558 }
559
560 static void smbXsrv_open_global_verify_record(struct db_record *db_rec,
561 bool *is_free,
562 bool *was_free,
563 TALLOC_CTX *mem_ctx,
564 struct smbXsrv_open_global0 **_g)
565 {
566 TDB_DATA key;
567 TDB_DATA val;
568 DATA_BLOB blob;
569 struct smbXsrv_open_globalB global_blob;
570 enum ndr_err_code ndr_err;
571 struct smbXsrv_open_global0 *global = NULL;
572 bool exists;
573 TALLOC_CTX *frame = talloc_stackframe();
574
575 *is_free = false;
576
577 if (was_free) {
578 *was_free = false;
579 }
580 if (_g) {
581 *_g = NULL;
582 }
583
584 key = dbwrap_record_get_key(db_rec);
585
586 val = dbwrap_record_get_value(db_rec);
587 if (val.dsize == 0) {
588 DEBUG(10, ("%s: empty value\n", __func__));
589 TALLOC_FREE(frame);
590 *is_free = true;
591 if (was_free) {
592 *was_free = true;
593 }
594 return;
595 }
596
597 blob = data_blob_const(val.dptr, val.dsize);
598
599 ndr_err = ndr_pull_struct_blob(&blob, frame, &global_blob,
600 (ndr_pull_flags_fn_t)ndr_pull_smbXsrv_open_globalB);
601 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
602 NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
603 DEBUG(1,("smbXsrv_open_global_verify_record: "
604 "key '%s' ndr_pull_struct_blob - %s\n",
605 hex_encode_talloc(frame, key.dptr, key.dsize),
606 nt_errstr(status)));
607 TALLOC_FREE(frame);
608 return;
609 }
610
611 DEBUG(10,("smbXsrv_open_global_verify_record\n"));
612 if (CHECK_DEBUGLVL(10)) {
613 NDR_PRINT_DEBUG(smbXsrv_open_globalB, &global_blob);
614 }
615
616 if (global_blob.version != SMBXSRV_VERSION_0) {
617 DEBUG(0,("smbXsrv_open_global_verify_record: "
618 "key '%s' use unsupported version %u\n",
619 hex_encode_talloc(frame, key.dptr, key.dsize),
620 global_blob.version));
621 NDR_PRINT_DEBUG(smbXsrv_open_globalB, &global_blob);
622 TALLOC_FREE(frame);
623 return;
624 }
625
626 global = global_blob.info.info0;
627
628 if (server_id_is_disconnected(&global->server_id)) {
629 exists = true;
630 } else {
631 exists = serverid_exists(&global->server_id);
632 }
633 if (!exists) {
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(frame, &global->server_id)));
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
893 SBVAL(buf, 0, _open->global->open_persistent_id);
894 SBVAL(buf, 8, _open->global->open_volatile_id);
895 SBVAL(buf, 16, _open->global->open_time);
896
897 ret = hash(buf, sizeof(buf), 0);
898
899 if (ret == 0) {
900 ret = 1;
901 }
902
903 return ret;
904 }
905
906 NTSTATUS smbXsrv_open_update(struct smbXsrv_open *op)
907 {
908 struct smbXsrv_open_table *table = op->table;
909 NTSTATUS status;
910 uint8_t key_buf[SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE];
911 TDB_DATA key;
912
913 if (op->global->db_rec != NULL) {
914 DEBUG(0, ("smbXsrv_open_update(0x%08x): "
915 "Called with db_rec != NULL'\n",
916 op->global->open_global_id));
917 return NT_STATUS_INTERNAL_ERROR;
918 }
919
920 key = smbXsrv_open_global_id_to_key(op->global->open_global_id,
921 key_buf);
922
923 op->global->db_rec = dbwrap_fetch_locked(table->global.db_ctx,
924 op->global, key);
925 if (op->global->db_rec == NULL) {
926 DEBUG(0, ("smbXsrv_open_update(0x%08x): "
927 "Failed to lock global key '%s'\n",
928 op->global->open_global_id,
929 hex_encode_talloc(talloc_tos(), key.dptr,
930 key.dsize)));
931 return NT_STATUS_INTERNAL_DB_ERROR;
932 }
933
934 status = smbXsrv_open_global_store(op->global);
935 if (!NT_STATUS_IS_OK(status)) {
936 DEBUG(0,("smbXsrv_open_update: "
937 "global_id (0x%08x) store failed - %s\n",
938 op->global->open_global_id,
939 nt_errstr(status)));
940 return status;
941 }
942
943 if (CHECK_DEBUGLVL(10)) {
944 struct smbXsrv_openB open_blob;
945
946 ZERO_STRUCT(open_blob);
947 open_blob.version = SMBXSRV_VERSION_0;
948 open_blob.info.info0 = op;
949
950 DEBUG(10,("smbXsrv_open_update: global_id (0x%08x) stored\n",
951 op->global->open_global_id));
952 NDR_PRINT_DEBUG(smbXsrv_openB, &open_blob);
953 }
954
955 return NT_STATUS_OK;
956 }
957
958 NTSTATUS smbXsrv_open_close(struct smbXsrv_open *op, NTTIME now)
959 {
960 struct smbXsrv_open_table *table;
961 struct db_record *local_rec = NULL;
962 struct db_record *global_rec = NULL;
963 NTSTATUS status;
964 NTSTATUS error = NT_STATUS_OK;
965
966 if (op->table == NULL) {
967 return NT_STATUS_OK;
968 }
969
970 table = op->table;
971 op->table = NULL;
972
973 op->status = NT_STATUS_FILE_CLOSED;
974 op->global->disconnect_time = now;
975 server_id_set_disconnected(&op->global->server_id);
976
977 global_rec = op->global->db_rec;
978 op->global->db_rec = NULL;
979 if (global_rec == NULL) {
980 uint8_t key_buf[SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE];
981 TDB_DATA key;
982
983 key = smbXsrv_open_global_id_to_key(
984 op->global->open_global_id,
985 key_buf);
986
987 global_rec = dbwrap_fetch_locked(table->global.db_ctx,
988 op->global, key);
989 if (global_rec == NULL) {
990 DEBUG(0, ("smbXsrv_open_close(0x%08x): "
991 "Failed to lock global key '%s'\n",
992 op->global->open_global_id,
993 hex_encode_talloc(global_rec, key.dptr,
994 key.dsize)));
995 error = NT_STATUS_INTERNAL_ERROR;
996 }
997 }
998
999 if (global_rec != NULL && op->global->durable) {
1000 /*
1001 * If it is a durable open we need to update the global part
1002 * instead of deleting it
1003 */
1004 op->global->db_rec = global_rec;
1005 status = smbXsrv_open_global_store(op->global);
1006 if (NT_STATUS_IS_OK(status)) {
1007 /*
1008 * smbXsrv_open_global_store does the free
1009 * of op->global->db_rec
1010 */
1011 global_rec = NULL;
1012 }
1013 if (!NT_STATUS_IS_OK(status)) {
1014 DEBUG(0,("smbXsrv_open_close(0x%08x)"
1015 "smbXsrv_open_global_store() failed - %s\n",
1016 op->global->open_global_id,
1017 nt_errstr(status)));
1018 error = status;
1019 }
1020
1021 if (NT_STATUS_IS_OK(status) && CHECK_DEBUGLVL(10)) {
1022 struct smbXsrv_openB open_blob;
1023
1024 ZERO_STRUCT(open_blob);
1025 open_blob.version = SMBXSRV_VERSION_0;
1026 open_blob.info.info0 = op;
1027
1028 DEBUG(10,("smbXsrv_open_close(0x%08x): "
1029 "stored disconnect\n",
1030 op->global->open_global_id));
1031 NDR_PRINT_DEBUG(smbXsrv_openB, &open_blob);
1032 }
1033 }
1034
1035 if (global_rec != NULL) {
1036 status = dbwrap_record_delete(global_rec);
1037 if (!NT_STATUS_IS_OK(status)) {
1038 TDB_DATA key = dbwrap_record_get_key(global_rec);
1039
1040 DEBUG(0, ("smbXsrv_open_close(0x%08x): "
1041 "failed to delete global key '%s': %s\n",
1042 op->global->open_global_id,
1043 hex_encode_talloc(global_rec, key.dptr,
1044 key.dsize),
1045 nt_errstr(status)));
1046 error = status;
1047 }
1048 }
1049 TALLOC_FREE(global_rec);
1050
1051 local_rec = op->db_rec;
1052 if (local_rec == NULL) {
1053 uint8_t key_buf[SMBXSRV_OPEN_LOCAL_TDB_KEY_SIZE];
1054 TDB_DATA key;
1055
1056 key = smbXsrv_open_local_id_to_key(op->local_id, key_buf);
1057
1058 local_rec = dbwrap_fetch_locked(table->local.db_ctx,
1059 op, key);
1060 if (local_rec == NULL) {
1061 DEBUG(0, ("smbXsrv_open_close(0x%08x): "
1062 "Failed to lock local key '%s'\n",
1063 op->global->open_global_id,
1064 hex_encode_talloc(local_rec, key.dptr,
1065 key.dsize)));
1066 error = NT_STATUS_INTERNAL_ERROR;
1067 }
1068 }
1069
1070 if (local_rec != NULL) {
1071 status = dbwrap_record_delete(local_rec);
1072 if (!NT_STATUS_IS_OK(status)) {
1073 TDB_DATA key = dbwrap_record_get_key(local_rec);
1074
1075 DEBUG(0, ("smbXsrv_open_close(0x%08x): "
1076 "failed to delete local key '%s': %s\n",
1077 op->global->open_global_id,
1078 hex_encode_talloc(local_rec, key.dptr,
1079 key.dsize),
1080 nt_errstr(status)));
1081 error = status;
1082 }
1083 table->local.num_opens -= 1;
1084 }
1085 if (op->db_rec == NULL) {
1086 TALLOC_FREE(local_rec);
1087 }
1088 op->db_rec = NULL;
1089
1090 if (op->compat) {
1091 op->compat->op = NULL;
1092 file_free(NULL, op->compat);
1093 op->compat = NULL;
1094 }
1095
1096 return error;
1097 }
1098
1099 NTSTATUS smb1srv_open_table_init(struct smbXsrv_connection *conn)
1100 {
1101 uint32_t max_opens;
1102
1103 /*
1104 * Allow a range from 1..65534.
1105 *
1106 * With real_max_open_files possible ids,
1107 * truncated to the SMB1 limit of 16-bit.
1108 *
1109 * 0 and 0xFFFF are no valid ids.
1110 */
1111 max_opens = conn->client->sconn->real_max_open_files;
1112 max_opens = MIN(max_opens, UINT16_MAX - 1);
1113
1114 return smbXsrv_open_table_init(conn, 1, UINT16_MAX - 1, max_opens);
1115 }
1116
1117 NTSTATUS smb1srv_open_lookup(struct smbXsrv_connection *conn,
1118 uint16_t fnum, NTTIME now,
1119 struct smbXsrv_open **_open)
1120 {
1121 struct smbXsrv_open_table *table = conn->client->open_table;
1122 uint32_t local_id = fnum;
1123 uint32_t global_id = 0;
1124
1125 return smbXsrv_open_local_lookup(table, local_id, global_id, now, _open);
1126 }
1127
1128 NTSTATUS smb2srv_open_table_init(struct smbXsrv_connection *conn)
1129 {
1130 uint32_t max_opens;
1131
1132 /*
1133 * Allow a range from 1..4294967294.
1134 *
1135 * With real_max_open_files possible ids,
1136 * truncated to 16-bit (the same as SMB1 for now).
1137 *
1138 * 0 and 0xFFFFFFFF are no valid ids.
1139 *
1140 * The usage of conn->sconn->real_max_open_files
1141 * is the reason that we use one open table per
1142 * transport connection (as we still have a 1:1 mapping
1143 * between process and transport connection).
1144 */
1145 max_opens = conn->client->sconn->real_max_open_files;
1146 max_opens = MIN(max_opens, UINT16_MAX - 1);
1147
1148 return smbXsrv_open_table_init(conn, 1, UINT32_MAX - 1, max_opens);
1149 }
1150
1151 NTSTATUS smb2srv_open_lookup(struct smbXsrv_connection *conn,
1152 uint64_t persistent_id,
1153 uint64_t volatile_id,
1154 NTTIME now,
1155 struct smbXsrv_open **_open)
1156 {
1157 struct smbXsrv_open_table *table = conn->client->open_table;
1158 uint32_t local_id = volatile_id & UINT32_MAX;
1159 uint64_t local_zeros = volatile_id & 0xFFFFFFFF00000000LLU;
1160 uint32_t global_id = persistent_id & UINT32_MAX;
1161 uint64_t global_zeros = persistent_id & 0xFFFFFFFF00000000LLU;
1162
1163 if (local_zeros != 0) {
1164 return NT_STATUS_FILE_CLOSED;
1165 }
1166
1167 if (global_zeros != 0) {
1168 return NT_STATUS_FILE_CLOSED;
1169 }
1170
1171 if (global_id == 0) {
1172 return NT_STATUS_FILE_CLOSED;
1173 }
1174
1175 return smbXsrv_open_local_lookup(table, local_id, global_id, now, _open);
1176 }
1177
1178 NTSTATUS smb2srv_open_recreate(struct smbXsrv_connection *conn,
1179 struct auth_session_info *session_info,
1180 uint64_t persistent_id,
1181 const struct GUID *create_guid,
1182 NTTIME now,
1183 struct smbXsrv_open **_open)
1184 {
1185 struct smbXsrv_open_table *table = conn->client->open_table;
1186 struct db_record *local_rec = NULL;
1187 struct smbXsrv_open *op = NULL;
1188 void *ptr = NULL;
1189 TDB_DATA val;
1190 uint32_t global_id = persistent_id & UINT32_MAX;
1191 uint64_t global_zeros = persistent_id & 0xFFFFFFFF00000000LLU;
1192 NTSTATUS status;
1193 struct security_token *current_token = NULL;
1194
1195 if (session_info == NULL) {
1196 DEBUG(10, ("session_info=NULL\n"));
1197 return NT_STATUS_INVALID_HANDLE;
1198 }
1199 current_token = session_info->security_token;
1200
1201 if (current_token == NULL) {
1202 DEBUG(10, ("current_token=NULL\n"));
1203 return NT_STATUS_INVALID_HANDLE;
1204 }
1205
1206 if (global_zeros != 0) {
1207 DEBUG(10, ("global_zeros!=0\n"));
1208 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1209 }
1210
1211 op = talloc_zero(table, struct smbXsrv_open);
1212 if (op == NULL) {
1213 return NT_STATUS_NO_MEMORY;
1214 }
1215 op->table = table;
1216
1217 status = smbXsrv_open_global_lookup(table, global_id, op, &op->global);
1218 if (!NT_STATUS_IS_OK(status)) {
1219 TALLOC_FREE(op);
1220 DEBUG(10, ("smbXsrv_open_global_lookup returned %s\n",
1221 nt_errstr(status)));
1222 return status;
1223 }
1224
1225 /*
1226 * If the provided create_guid is NULL, this means that
1227 * the reconnect request was a v1 request. In that case
1228 * we should skipt the create GUID verification, since
1229 * it is valid to v1-reconnect a v2-opened handle.
1230 */
1231 if ((create_guid != NULL) &&
1232 !GUID_equal(&op->global->create_guid, create_guid))
1233 {
1234 TALLOC_FREE(op);
1235 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1236 }
1237
1238 if (!security_token_is_sid(current_token, &op->global->open_owner)) {
1239 TALLOC_FREE(op);
1240 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1241 }
1242
1243 if (!op->global->durable) {
1244 TALLOC_FREE(op);
1245 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1246 }
1247
1248 if (table->local.num_opens >= table->local.max_opens) {
1249 TALLOC_FREE(op);
1250 return NT_STATUS_INSUFFICIENT_RESOURCES;
1251 }
1252
1253 status = smbXsrv_open_local_allocate_id(table->local.db_ctx,
1254 table->local.lowest_id,
1255 table->local.highest_id,
1256 op,
1257 &local_rec,
1258 &op->local_id);
1259 if (!NT_STATUS_IS_OK(status)) {
1260 TALLOC_FREE(op);
1261 return status;
1262 }
1263
1264 op->idle_time = now;
1265 op->status = NT_STATUS_FILE_CLOSED;
1266
1267 op->global->open_volatile_id = op->local_id;
1268 op->global->server_id = messaging_server_id(conn->msg_ctx);
1269
1270 ptr = op;
1271 val = make_tdb_data((uint8_t const *)&ptr, sizeof(ptr));
1272 status = dbwrap_record_store(local_rec, val, TDB_REPLACE);
1273 TALLOC_FREE(local_rec);
1274 if (!NT_STATUS_IS_OK(status)) {
1275 TALLOC_FREE(op);
1276 return status;
1277 }
1278 table->local.num_opens += 1;
1279
1280 talloc_set_destructor(op, smbXsrv_open_destructor);
1281
1282 status = smbXsrv_open_global_store(op->global);
1283 if (!NT_STATUS_IS_OK(status)) {
1284 TALLOC_FREE(op);
1285 return status;
1286 }
1287
1288 if (CHECK_DEBUGLVL(10)) {
1289 struct smbXsrv_openB open_blob;
1290
1291 ZERO_STRUCT(open_blob);
1292 open_blob.version = 0;
1293 open_blob.info.info0 = op;
1294
1295 DEBUG(10,("smbXsrv_open_recreate: global_id (0x%08x) stored\n",
1296 op->global->open_global_id));
1297 NDR_PRINT_DEBUG(smbXsrv_openB, &open_blob);
1298 }
1299
1300 *_open = op;
1301 return NT_STATUS_OK;
1302 }
1303
1304
1305 static NTSTATUS smbXsrv_open_global_parse_record(TALLOC_CTX *mem_ctx,
1306 struct db_record *rec,
1307 struct smbXsrv_open_global0 **global)
1308 {
1309 TDB_DATA key = dbwrap_record_get_key(rec);
1310 TDB_DATA val = dbwrap_record_get_value(rec);
1311 DATA_BLOB blob = data_blob_const(val.dptr, val.dsize);
1312 struct smbXsrv_open_globalB global_blob;
1313 enum ndr_err_code ndr_err;
1314 NTSTATUS status;
1315 TALLOC_CTX *frame = talloc_stackframe();
1316
1317 ndr_err = ndr_pull_struct_blob(&blob, frame, &global_blob,
1318 (ndr_pull_flags_fn_t)ndr_pull_smbXsrv_open_globalB);
1319 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1320 DEBUG(1,("Invalid record in smbXsrv_open_global.tdb:"
1321 "key '%s' ndr_pull_struct_blob - %s\n",
1322 hex_encode_talloc(frame, key.dptr, key.dsize),
1323 ndr_errstr(ndr_err)));
1324 status = ndr_map_error2ntstatus(ndr_err);
1325 goto done;
1326 }
1327
1328 if (global_blob.version != SMBXSRV_VERSION_0) {
1329 status = NT_STATUS_INTERNAL_DB_CORRUPTION;
1330 DEBUG(1,("Invalid record in smbXsrv_open_global.tdb:"
1331 "key '%s' unsuported version - %d - %s\n",
1332 hex_encode_talloc(frame, key.dptr, key.dsize),
1333 (int)global_blob.version,
1334 nt_errstr(status)));
1335 goto done;
1336 }
1337
1338 *global = talloc_move(mem_ctx, &global_blob.info.info0);
1339 status = NT_STATUS_OK;
1340 done:
1341 talloc_free(frame);
1342 return status;
1343 }
1344
1345 struct smbXsrv_open_global_traverse_state {
1346 int (*fn)(struct smbXsrv_open_global0 *, void *);
1347 void *private_data;
1348 };
1349
1350 static int smbXsrv_open_global_traverse_fn(struct db_record *rec, void *data)
1351 {
1352 struct smbXsrv_open_global_traverse_state *state =
1353 (struct smbXsrv_open_global_traverse_state*)data;
1354 struct smbXsrv_open_global0 *global = NULL;
1355 NTSTATUS status;
1356 int ret = -1;
1357
1358 status = smbXsrv_open_global_parse_record(talloc_tos(), rec, &global);
1359 if (!NT_STATUS_IS_OK(status)) {
1360 return -1;
1361 }
1362
1363 global->db_rec = rec;
1364 ret = state->fn(global, state->private_data);
1365 talloc_free(global);
1366 return ret;
1367 }
1368
1369 NTSTATUS smbXsrv_open_global_traverse(
1370 int (*fn)(struct smbXsrv_open_global0 *, void *),
1371 void *private_data)
1372 {
1373
1374 NTSTATUS status;
1375 int count = 0;
1376 struct smbXsrv_open_global_traverse_state state = {
1377 .fn = fn,
1378 .private_data = private_data,
1379 };
1380
1381 become_root();
1382 status = smbXsrv_open_global_init();
1383 if (!NT_STATUS_IS_OK(status)) {
1384 unbecome_root();
1385 DEBUG(0, ("Failed to initialize open_global: %s\n",
1386 nt_errstr(status)));
1387 return status;
1388 }
1389
1390 status = dbwrap_traverse_read(smbXsrv_open_global_db_ctx,
1391 smbXsrv_open_global_traverse_fn,
1392 &state,
1393 &count);
1394 unbecome_root();
1395
1396 return status;
1397 }
1398
1399 NTSTATUS smbXsrv_open_cleanup(uint64_t persistent_id)
1400 {
1401 NTSTATUS status = NT_STATUS_OK;
1402 TALLOC_CTX *frame = talloc_stackframe();
1403 struct smbXsrv_open_global0 *op = NULL;
1404 uint8_t key_buf[SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE];
1405 TDB_DATA key;
1406 TDB_DATA val;
1407 struct db_record *rec;
1408 bool delete_open = false;
1409 uint32_t global_id = persistent_id & UINT32_MAX;
1410
1411 key = smbXsrv_open_global_id_to_key(global_id, key_buf);
1412 rec = dbwrap_fetch_locked(smbXsrv_open_global_db_ctx, frame, key);
1413 if (rec == NULL) {
1414 status = NT_STATUS_NOT_FOUND;
1415 DEBUG(1, ("smbXsrv_open_cleanup[global: 0x%08x] "
1416 "failed to fetch record from %s - %s\n",
1417 global_id, dbwrap_name(smbXsrv_open_global_db_ctx),
1418 nt_errstr(status)));
1419 goto done;
1420 }
1421
1422 val = dbwrap_record_get_value(rec);
1423 if (val.dsize == 0) {
1424 DEBUG(10, ("smbXsrv_open_cleanup[global: 0x%08x] "
1425 "empty record in %s, skipping...\n",
1426 global_id, dbwrap_name(smbXsrv_open_global_db_ctx)));
1427 goto done;
1428 }
1429
1430 status = smbXsrv_open_global_parse_record(talloc_tos(), rec, &op);
1431 if (!NT_STATUS_IS_OK(status)) {
1432 DEBUG(1, ("smbXsrv_open_cleanup[global: 0x%08x] "
1433 "failed to read record: %s\n",
1434 global_id, nt_errstr(status)));
1435 goto done;
1436 }
1437
1438 if (server_id_is_disconnected(&op->server_id)) {
1439 struct timeval now, disconnect_time;
1440 int64_t tdiff;
1441 now = timeval_current();
1442 nttime_to_timeval(&disconnect_time, op->disconnect_time);
1443 tdiff = usec_time_diff(&now, &disconnect_time);
1444 delete_open = (tdiff >= 1000*op->durable_timeout_msec);
1445
1446 DEBUG(10, ("smbXsrv_open_cleanup[global: 0x%08x] "
1447 "disconnected at [%s] %us ago with "
1448 "timeout of %us -%s reached\n",
1449 global_id,
1450 nt_time_string(frame, op->disconnect_time),
1451 (unsigned)(tdiff/1000000),
1452 op->durable_timeout_msec / 1000,
1453 delete_open ? "" : " not"));
1454 } else if (!serverid_exists(&op->server_id)) {
1455 DEBUG(10, ("smbXsrv_open_cleanup[global: 0x%08x] "
1456 "server[%s] does not exist\n",
1457 global_id, server_id_str(frame, &op->server_id)));
1458 delete_open = true;
1459 }
1460
1461 if (!delete_open) {
1462 goto done;
1463 }
1464
1465 status = dbwrap_record_delete(rec);
1466 if (!NT_STATUS_IS_OK(status)) {
1467 DEBUG(1, ("smbXsrv_open_cleanup[global: 0x%08x] "
1468 "failed to delete record"
1469 "from %s: %s\n", global_id,
1470 dbwrap_name(smbXsrv_open_global_db_ctx),
1471 nt_errstr(status)));
1472 goto done;
1473 }
1474
1475 DEBUG(10, ("smbXsrv_open_cleanup[global: 0x%08x] "
1476 "delete record from %s\n",
1477 global_id,
1478 dbwrap_name(smbXsrv_open_global_db_ctx)));
1479
1480 done:
1481 talloc_free(frame);
1482 return status;
1483 }
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