source: vendor/current/source3/smbd/smbXsrv_open.c

Last change on this file was 988, checked in by Silvan Scherrer, 9 years ago

Samba Server: update vendor to version 4.4.3
File size: 38.8 KB
Line 
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
34struct smbXsrv_open_table {
35 struct {
36 struct db_context *db_ctx;
37 struct db_context *replay_cache_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
48static struct db_context *smbXsrv_open_global_db_ctx = NULL;
49
50NTSTATUS 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
97static 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
110static 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
128static 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
140static 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
155static struct db_record *smbXsrv_open_global_fetch_locked(
156 struct db_context *db,
157 uint32_t id,
158 TALLOC_CTX *mem_ctx)
159{
160 TDB_DATA key;
161 uint8_t key_buf[SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE];
162 struct db_record *rec = NULL;
163
164 key = smbXsrv_open_global_id_to_key(id, key_buf);
165
166 rec = dbwrap_fetch_locked(db, mem_ctx, key);
167
168 if (rec == NULL) {
169 DBG_DEBUG("Failed to lock global id 0x%08x, key '%s'\n", id,
170 hex_encode_talloc(talloc_tos(), key.dptr, key.dsize));
171 }
172
173 return rec;
174}
175
176static struct db_record *smbXsrv_open_local_fetch_locked(
177 struct db_context *db,
178 uint32_t id,
179 TALLOC_CTX *mem_ctx)
180{
181 TDB_DATA key;
182 uint8_t key_buf[SMBXSRV_OPEN_LOCAL_TDB_KEY_SIZE];
183 struct db_record *rec = NULL;
184
185 key = smbXsrv_open_local_id_to_key(id, key_buf);
186
187 rec = dbwrap_fetch_locked(db, mem_ctx, key);
188
189 if (rec == NULL) {
190 DBG_DEBUG("Failed to lock local id 0x%08x, key '%s'\n", id,
191 hex_encode_talloc(talloc_tos(), key.dptr, key.dsize));
192 }
193
194 return rec;
195}
196
197static NTSTATUS smbXsrv_open_table_init(struct smbXsrv_connection *conn,
198 uint32_t lowest_id,
199 uint32_t highest_id,
200 uint32_t max_opens)
201{
202 struct smbXsrv_client *client = conn->client;
203 struct smbXsrv_open_table *table;
204 NTSTATUS status;
205 uint64_t max_range;
206
207 if (lowest_id > highest_id) {
208 return NT_STATUS_INTERNAL_ERROR;
209 }
210
211 max_range = highest_id;
212 max_range -= lowest_id;
213 max_range += 1;
214
215 if (max_opens > max_range) {
216 return NT_STATUS_INTERNAL_ERROR;
217 }
218
219 table = talloc_zero(client, struct smbXsrv_open_table);
220 if (table == NULL) {
221 return NT_STATUS_NO_MEMORY;
222 }
223
224 table->local.db_ctx = db_open_rbt(table);
225 if (table->local.db_ctx == NULL) {
226 TALLOC_FREE(table);
227 return NT_STATUS_NO_MEMORY;
228 }
229 table->local.replay_cache_db_ctx = db_open_rbt(table);
230 if (table->local.replay_cache_db_ctx == NULL) {
231 TALLOC_FREE(table);
232 return NT_STATUS_NO_MEMORY;
233 }
234 table->local.lowest_id = lowest_id;
235 table->local.highest_id = highest_id;
236 table->local.max_opens = max_opens;
237
238 status = smbXsrv_open_global_init();
239 if (!NT_STATUS_IS_OK(status)) {
240 TALLOC_FREE(table);
241 return status;
242 }
243
244 table->global.db_ctx = smbXsrv_open_global_db_ctx;
245
246 client->open_table = table;
247 return NT_STATUS_OK;
248}
249
250struct smbXsrv_open_local_allocate_state {
251 const uint32_t lowest_id;
252 const uint32_t highest_id;
253 uint32_t last_id;
254 uint32_t useable_id;
255 NTSTATUS status;
256};
257
258static int smbXsrv_open_local_allocate_traverse(struct db_record *rec,
259 void *private_data)
260{
261 struct smbXsrv_open_local_allocate_state *state =
262 (struct smbXsrv_open_local_allocate_state *)private_data;
263 TDB_DATA key = dbwrap_record_get_key(rec);
264 uint32_t id = 0;
265 NTSTATUS status;
266
267 status = smbXsrv_open_local_key_to_id(key, &id);
268 if (!NT_STATUS_IS_OK(status)) {
269 state->status = status;
270 return -1;
271 }
272
273 if (id <= state->last_id) {
274 state->status = NT_STATUS_INTERNAL_DB_CORRUPTION;
275 return -1;
276 }
277 state->last_id = id;
278
279 if (id > state->useable_id) {
280 state->status = NT_STATUS_OK;
281 return -1;
282 }
283
284 if (state->useable_id == state->highest_id) {
285 state->status = NT_STATUS_INSUFFICIENT_RESOURCES;
286 return -1;
287 }
288
289 state->useable_id +=1;
290 return 0;
291}
292
293static NTSTATUS smbXsrv_open_local_allocate_id(struct db_context *db,
294 uint32_t lowest_id,
295 uint32_t highest_id,
296 TALLOC_CTX *mem_ctx,
297 struct db_record **_rec,
298 uint32_t *_id)
299{
300 struct smbXsrv_open_local_allocate_state state = {
301 .lowest_id = lowest_id,
302 .highest_id = highest_id,
303 .last_id = 0,
304 .useable_id = lowest_id,
305 .status = NT_STATUS_INTERNAL_ERROR,
306 };
307 uint32_t i;
308 uint32_t range;
309 NTSTATUS status;
310 int count = 0;
311
312 *_rec = NULL;
313 *_id = 0;
314
315 if (lowest_id > highest_id) {
316 return NT_STATUS_INSUFFICIENT_RESOURCES;
317 }
318
319 /*
320 * first we try randomly
321 */
322 range = (highest_id - lowest_id) + 1;
323
324 for (i = 0; i < (range / 2); i++) {
325 uint32_t id;
326 TDB_DATA val;
327 struct db_record *rec = NULL;
328
329 id = generate_random() % range;
330 id += lowest_id;
331
332 if (id < lowest_id) {
333 id = lowest_id;
334 }
335 if (id > highest_id) {
336 id = highest_id;
337 }
338
339 rec = smbXsrv_open_local_fetch_locked(db, id, mem_ctx);
340 if (rec == NULL) {
341 return NT_STATUS_INSUFFICIENT_RESOURCES;
342 }
343
344 val = dbwrap_record_get_value(rec);
345 if (val.dsize != 0) {
346 TALLOC_FREE(rec);
347 continue;
348 }
349
350 *_rec = rec;
351 *_id = id;
352 return NT_STATUS_OK;
353 }
354
355 /*
356 * if the range is almost full,
357 * we traverse the whole table
358 * (this relies on sorted behavior of dbwrap_rbt)
359 */
360 status = dbwrap_traverse_read(db, smbXsrv_open_local_allocate_traverse,
361 &state, &count);
362 if (NT_STATUS_IS_OK(status)) {
363 if (NT_STATUS_IS_OK(state.status)) {
364 return NT_STATUS_INTERNAL_ERROR;
365 }
366
367 if (!NT_STATUS_EQUAL(state.status, NT_STATUS_INTERNAL_ERROR)) {
368 return state.status;
369 }
370
371 if (state.useable_id <= state.highest_id) {
372 state.status = NT_STATUS_OK;
373 } else {
374 return NT_STATUS_INSUFFICIENT_RESOURCES;
375 }
376 } else if (!NT_STATUS_EQUAL(status, NT_STATUS_INTERNAL_DB_CORRUPTION)) {
377 /*
378 * Here we really expect NT_STATUS_INTERNAL_DB_CORRUPTION!
379 *
380 * If we get anything else it is an error, because it
381 * means we did not manage to find a free slot in
382 * the db.
383 */
384 return NT_STATUS_INSUFFICIENT_RESOURCES;
385 }
386
387 if (NT_STATUS_IS_OK(state.status)) {
388 uint32_t id;
389 TDB_DATA val;
390 struct db_record *rec = NULL;
391
392 id = state.useable_id;
393
394 rec = smbXsrv_open_local_fetch_locked(db, id, mem_ctx);
395 if (rec == NULL) {
396 return NT_STATUS_INSUFFICIENT_RESOURCES;
397 }
398
399 val = dbwrap_record_get_value(rec);
400 if (val.dsize != 0) {
401 TALLOC_FREE(rec);
402 return NT_STATUS_INTERNAL_DB_CORRUPTION;
403 }
404
405 *_rec = rec;
406 *_id = id;
407 return NT_STATUS_OK;
408 }
409
410 return state.status;
411}
412
413struct smbXsrv_open_local_fetch_state {
414 struct smbXsrv_open *op;
415 NTSTATUS status;
416};
417
418static void smbXsrv_open_local_fetch_parser(TDB_DATA key, TDB_DATA data,
419 void *private_data)
420{
421 struct smbXsrv_open_local_fetch_state *state =
422 (struct smbXsrv_open_local_fetch_state *)private_data;
423 void *ptr;
424
425 if (data.dsize != sizeof(ptr)) {
426 state->status = NT_STATUS_INTERNAL_DB_ERROR;
427 return;
428 }
429
430 memcpy(&ptr, data.dptr, data.dsize);
431 state->op = talloc_get_type_abort(ptr, struct smbXsrv_open);
432 state->status = NT_STATUS_OK;
433}
434
435static NTSTATUS smbXsrv_open_local_lookup(struct smbXsrv_open_table *table,
436 uint32_t open_local_id,
437 uint32_t open_global_id,
438 NTTIME now,
439 struct smbXsrv_open **_open)
440{
441 struct smbXsrv_open_local_fetch_state state = {
442 .op = NULL,
443 .status = NT_STATUS_INTERNAL_ERROR,
444 };
445 uint8_t key_buf[SMBXSRV_OPEN_LOCAL_TDB_KEY_SIZE];
446 TDB_DATA key;
447 NTSTATUS status;
448
449 *_open = NULL;
450
451 if (open_local_id == 0) {
452 return NT_STATUS_FILE_CLOSED;
453 }
454
455 if (table == NULL) {
456 /* this might happen before the end of negprot */
457 return NT_STATUS_FILE_CLOSED;
458 }
459
460 if (table->local.db_ctx == NULL) {
461 return NT_STATUS_INTERNAL_ERROR;
462 }
463
464 key = smbXsrv_open_local_id_to_key(open_local_id, key_buf);
465
466 status = dbwrap_parse_record(table->local.db_ctx, key,
467 smbXsrv_open_local_fetch_parser,
468 &state);
469 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
470 return NT_STATUS_FILE_CLOSED;
471 } else if (!NT_STATUS_IS_OK(status)) {
472 return status;
473 }
474 if (!NT_STATUS_IS_OK(state.status)) {
475 return state.status;
476 }
477
478 if (NT_STATUS_EQUAL(state.op->status, NT_STATUS_FILE_CLOSED)) {
479 return NT_STATUS_FILE_CLOSED;
480 }
481
482 if (open_global_id == 0) {
483 /* make the global check a no-op for SMB1 */
484 open_global_id = state.op->global->open_global_id;
485 }
486
487 if (state.op->global->open_global_id != open_global_id) {
488 return NT_STATUS_FILE_CLOSED;
489 }
490
491 if (now != 0) {
492 state.op->idle_time = now;
493 }
494
495 *_open = state.op;
496 return state.op->status;
497}
498
499static int smbXsrv_open_global_destructor(struct smbXsrv_open_global0 *global)
500{
501 return 0;
502}
503
504static void smbXsrv_open_global_verify_record(struct db_record *db_rec,
505 bool *is_free,
506 bool *was_free,
507 TALLOC_CTX *mem_ctx,
508 struct smbXsrv_open_global0 **_g);
509
510static NTSTATUS smbXsrv_open_global_allocate(struct db_context *db,
511 TALLOC_CTX *mem_ctx,
512 struct smbXsrv_open_global0 **_global)
513{
514 uint32_t i;
515 struct smbXsrv_open_global0 *global = NULL;
516 uint32_t last_free = 0;
517 const uint32_t min_tries = 3;
518
519 *_global = NULL;
520
521 global = talloc_zero(mem_ctx, struct smbXsrv_open_global0);
522 if (global == NULL) {
523 return NT_STATUS_NO_MEMORY;
524 }
525 talloc_set_destructor(global, smbXsrv_open_global_destructor);
526
527 /*
528 * Here we just randomly try the whole 32-bit space
529 *
530 * We use just 32-bit, because we want to reuse the
531 * ID for SRVSVC.
532 */
533 for (i = 0; i < UINT32_MAX; i++) {
534 bool is_free = false;
535 bool was_free = false;
536 uint32_t id;
537
538 if (i >= min_tries && last_free != 0) {
539 id = last_free;
540 } else {
541 id = generate_random();
542 }
543 if (id == 0) {
544 id++;
545 }
546 if (id == UINT32_MAX) {
547 id--;
548 }
549
550 global->db_rec = smbXsrv_open_global_fetch_locked(db, id, mem_ctx);
551 if (global->db_rec == NULL) {
552 talloc_free(global);
553 return NT_STATUS_INSUFFICIENT_RESOURCES;
554 }
555
556 smbXsrv_open_global_verify_record(global->db_rec,
557 &is_free,
558 &was_free,
559 NULL, NULL);
560
561 if (!is_free) {
562 TALLOC_FREE(global->db_rec);
563 continue;
564 }
565
566 if (!was_free && i < min_tries) {
567 /*
568 * The session_id is free now,
569 * but was not free before.
570 *
571 * This happens if a smbd crashed
572 * and did not cleanup the record.
573 *
574 * If this is one of our first tries,
575 * then we try to find a real free one.
576 */
577 if (last_free == 0) {
578 last_free = id;
579 }
580 TALLOC_FREE(global->db_rec);
581 continue;
582 }
583
584 global->open_global_id = id;
585
586 *_global = global;
587 return NT_STATUS_OK;
588 }
589
590 /* should not be reached */
591 talloc_free(global);
592 return NT_STATUS_INTERNAL_ERROR;
593}
594
595static void smbXsrv_open_global_verify_record(struct db_record *db_rec,
596 bool *is_free,
597 bool *was_free,
598 TALLOC_CTX *mem_ctx,
599 struct smbXsrv_open_global0 **_g)
600{
601 TDB_DATA key;
602 TDB_DATA val;
603 DATA_BLOB blob;
604 struct smbXsrv_open_globalB global_blob;
605 enum ndr_err_code ndr_err;
606 struct smbXsrv_open_global0 *global = NULL;
607 bool exists;
608 TALLOC_CTX *frame = talloc_stackframe();
609
610 *is_free = false;
611
612 if (was_free) {
613 *was_free = false;
614 }
615 if (_g) {
616 *_g = NULL;
617 }
618
619 key = dbwrap_record_get_key(db_rec);
620
621 val = dbwrap_record_get_value(db_rec);
622 if (val.dsize == 0) {
623 DEBUG(10, ("%s: empty value\n", __func__));
624 TALLOC_FREE(frame);
625 *is_free = true;
626 if (was_free) {
627 *was_free = true;
628 }
629 return;
630 }
631
632 blob = data_blob_const(val.dptr, val.dsize);
633
634 ndr_err = ndr_pull_struct_blob(&blob, frame, &global_blob,
635 (ndr_pull_flags_fn_t)ndr_pull_smbXsrv_open_globalB);
636 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
637 NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
638 DEBUG(1,("smbXsrv_open_global_verify_record: "
639 "key '%s' ndr_pull_struct_blob - %s\n",
640 hex_encode_talloc(frame, key.dptr, key.dsize),
641 nt_errstr(status)));
642 TALLOC_FREE(frame);
643 return;
644 }
645
646 DEBUG(10,("smbXsrv_open_global_verify_record\n"));
647 if (CHECK_DEBUGLVL(10)) {
648 NDR_PRINT_DEBUG(smbXsrv_open_globalB, &global_blob);
649 }
650
651 if (global_blob.version != SMBXSRV_VERSION_0) {
652 DEBUG(0,("smbXsrv_open_global_verify_record: "
653 "key '%s' use unsupported version %u\n",
654 hex_encode_talloc(frame, key.dptr, key.dsize),
655 global_blob.version));
656 NDR_PRINT_DEBUG(smbXsrv_open_globalB, &global_blob);
657 TALLOC_FREE(frame);
658 return;
659 }
660
661 global = global_blob.info.info0;
662
663 if (server_id_is_disconnected(&global->server_id)) {
664 exists = true;
665 } else {
666 exists = serverid_exists(&global->server_id);
667 }
668 if (!exists) {
669 struct server_id_buf idbuf;
670 DEBUG(2,("smbXsrv_open_global_verify_record: "
671 "key '%s' server_id %s does not exist.\n",
672 hex_encode_talloc(frame, key.dptr, key.dsize),
673 server_id_str_buf(global->server_id, &idbuf)));
674 if (CHECK_DEBUGLVL(2)) {
675 NDR_PRINT_DEBUG(smbXsrv_open_globalB, &global_blob);
676 }
677 TALLOC_FREE(frame);
678 dbwrap_record_delete(db_rec);
679 *is_free = true;
680 return;
681 }
682
683 if (_g) {
684 *_g = talloc_move(mem_ctx, &global);
685 }
686 TALLOC_FREE(frame);
687}
688
689static NTSTATUS smbXsrv_open_global_store(struct smbXsrv_open_global0 *global)
690{
691 struct smbXsrv_open_globalB global_blob;
692 DATA_BLOB blob = data_blob_null;
693 TDB_DATA key;
694 TDB_DATA val;
695 NTSTATUS status;
696 enum ndr_err_code ndr_err;
697
698 /*
699 * TODO: if we use other versions than '0'
700 * we would add glue code here, that would be able to
701 * store the information in the old format.
702 */
703
704 if (global->db_rec == NULL) {
705 return NT_STATUS_INTERNAL_ERROR;
706 }
707
708 key = dbwrap_record_get_key(global->db_rec);
709 val = dbwrap_record_get_value(global->db_rec);
710
711 ZERO_STRUCT(global_blob);
712 global_blob.version = smbXsrv_version_global_current();
713 if (val.dsize >= 8) {
714 global_blob.seqnum = IVAL(val.dptr, 4);
715 }
716 global_blob.seqnum += 1;
717 global_blob.info.info0 = global;
718
719 ndr_err = ndr_push_struct_blob(&blob, global->db_rec, &global_blob,
720 (ndr_push_flags_fn_t)ndr_push_smbXsrv_open_globalB);
721 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
722 status = ndr_map_error2ntstatus(ndr_err);
723 DEBUG(1,("smbXsrv_open_global_store: key '%s' ndr_push - %s\n",
724 hex_encode_talloc(global->db_rec, key.dptr, key.dsize),
725 nt_errstr(status)));
726 TALLOC_FREE(global->db_rec);
727 return status;
728 }
729
730 val = make_tdb_data(blob.data, blob.length);
731 status = dbwrap_record_store(global->db_rec, val, TDB_REPLACE);
732 if (!NT_STATUS_IS_OK(status)) {
733 DEBUG(1,("smbXsrv_open_global_store: key '%s' store - %s\n",
734 hex_encode_talloc(global->db_rec, key.dptr, key.dsize),
735 nt_errstr(status)));
736 TALLOC_FREE(global->db_rec);
737 return status;
738 }
739
740 if (CHECK_DEBUGLVL(10)) {
741 DEBUG(10,("smbXsrv_open_global_store: key '%s' stored\n",
742 hex_encode_talloc(global->db_rec, key.dptr, key.dsize)));
743 NDR_PRINT_DEBUG(smbXsrv_open_globalB, &global_blob);
744 }
745
746 TALLOC_FREE(global->db_rec);
747
748 return NT_STATUS_OK;
749}
750
751static NTSTATUS smbXsrv_open_global_lookup(struct smbXsrv_open_table *table,
752 uint32_t open_global_id,
753 TALLOC_CTX *mem_ctx,
754 struct smbXsrv_open_global0 **_global)
755{
756 struct db_record *global_rec = NULL;
757 bool is_free = false;
758
759 *_global = NULL;
760
761 if (table->global.db_ctx == NULL) {
762 return NT_STATUS_INTERNAL_ERROR;
763 }
764
765 global_rec = smbXsrv_open_global_fetch_locked(table->global.db_ctx,
766 open_global_id,
767 mem_ctx);
768 if (global_rec == NULL) {
769 return NT_STATUS_INTERNAL_DB_ERROR;
770 }
771
772 smbXsrv_open_global_verify_record(global_rec,
773 &is_free,
774 NULL,
775 mem_ctx,
776 _global);
777 if (is_free) {
778 DEBUG(10, ("%s: is_free=true\n", __func__));
779 talloc_free(global_rec);
780 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
781 }
782
783 (*_global)->db_rec = talloc_move(*_global, &global_rec);
784
785 talloc_set_destructor(*_global, smbXsrv_open_global_destructor);
786
787 return NT_STATUS_OK;
788}
789
790static int smbXsrv_open_destructor(struct smbXsrv_open *op)
791{
792 NTSTATUS status;
793
794 status = smbXsrv_open_close(op, 0);
795 if (!NT_STATUS_IS_OK(status)) {
796 DEBUG(0, ("smbXsrv_open_destructor: "
797 "smbXsrv_open_close() failed - %s\n",
798 nt_errstr(status)));
799 }
800
801 TALLOC_FREE(op->global);
802
803 return 0;
804}
805
806NTSTATUS smbXsrv_open_create(struct smbXsrv_connection *conn,
807 struct auth_session_info *session_info,
808 NTTIME now,
809 struct smbXsrv_open **_open)
810{
811 struct smbXsrv_open_table *table = conn->client->open_table;
812 struct db_record *local_rec = NULL;
813 struct smbXsrv_open *op = NULL;
814 void *ptr = NULL;
815 TDB_DATA val;
816 struct smbXsrv_open_global0 *global = NULL;
817 NTSTATUS status;
818 struct dom_sid *current_sid = NULL;
819 struct security_token *current_token = NULL;
820
821 if (session_info == NULL) {
822 return NT_STATUS_INVALID_HANDLE;
823 }
824 current_token = session_info->security_token;
825
826 if (current_token == NULL) {
827 return NT_STATUS_INVALID_HANDLE;
828 }
829
830 if (current_token->num_sids > PRIMARY_USER_SID_INDEX) {
831 current_sid = &current_token->sids[PRIMARY_USER_SID_INDEX];
832 }
833
834 if (current_sid == NULL) {
835 return NT_STATUS_INVALID_HANDLE;
836 }
837
838 if (table->local.num_opens >= table->local.max_opens) {
839 return NT_STATUS_INSUFFICIENT_RESOURCES;
840 }
841
842 op = talloc_zero(table, struct smbXsrv_open);
843 if (op == NULL) {
844 return NT_STATUS_NO_MEMORY;
845 }
846 op->table = table;
847 op->status = NT_STATUS_OK; /* TODO: start with INTERNAL_ERROR */
848 op->idle_time = now;
849
850 status = smbXsrv_open_global_allocate(table->global.db_ctx,
851 op, &global);
852 if (!NT_STATUS_IS_OK(status)) {
853 TALLOC_FREE(op);
854 return status;
855 }
856 op->global = global;
857
858 status = smbXsrv_open_local_allocate_id(table->local.db_ctx,
859 table->local.lowest_id,
860 table->local.highest_id,
861 op,
862 &local_rec,
863 &op->local_id);
864 if (!NT_STATUS_IS_OK(status)) {
865 TALLOC_FREE(op);
866 return status;
867 }
868
869 global->open_persistent_id = global->open_global_id;
870 global->open_volatile_id = op->local_id;
871
872 global->server_id = messaging_server_id(conn->msg_ctx);
873 global->open_time = now;
874 global->open_owner = *current_sid;
875 if (conn->protocol >= PROTOCOL_SMB2_10) {
876 global->client_guid = conn->smb2.client.guid;
877 }
878
879 ptr = op;
880 val = make_tdb_data((uint8_t const *)&ptr, sizeof(ptr));
881 status = dbwrap_record_store(local_rec, val, TDB_REPLACE);
882 TALLOC_FREE(local_rec);
883 if (!NT_STATUS_IS_OK(status)) {
884 TALLOC_FREE(op);
885 return status;
886 }
887 table->local.num_opens += 1;
888
889 talloc_set_destructor(op, smbXsrv_open_destructor);
890
891 status = smbXsrv_open_global_store(global);
892 if (!NT_STATUS_IS_OK(status)) {
893 DEBUG(0,("smbXsrv_open_create: "
894 "global_id (0x%08x) store failed - %s\n",
895 op->global->open_global_id,
896 nt_errstr(status)));
897 TALLOC_FREE(op);
898 return status;
899 }
900
901 if (CHECK_DEBUGLVL(10)) {
902 struct smbXsrv_openB open_blob;
903
904 ZERO_STRUCT(open_blob);
905 open_blob.version = SMBXSRV_VERSION_0;
906 open_blob.info.info0 = op;
907
908 DEBUG(10,("smbXsrv_open_create: global_id (0x%08x) stored\n",
909 op->global->open_global_id));
910 NDR_PRINT_DEBUG(smbXsrv_openB, &open_blob);
911 }
912
913 *_open = op;
914 return NT_STATUS_OK;
915}
916
917uint32_t smbXsrv_open_hash(struct smbXsrv_open *_open)
918{
919 uint8_t buf[8+8+8];
920 uint32_t ret;
921 TDB_DATA key;
922
923 SBVAL(buf, 0, _open->global->open_persistent_id);
924 SBVAL(buf, 8, _open->global->open_volatile_id);
925 SBVAL(buf, 16, _open->global->open_time);
926
927 key = (TDB_DATA) { .dptr = buf, .dsize = sizeof(buf) };
928 ret = tdb_jenkins_hash(&key);
929
930 if (ret == 0) {
931 ret = 1;
932 }
933
934 return ret;
935}
936
937static NTSTATUS smbXsrv_open_set_replay_cache(struct smbXsrv_open *op)
938{
939 struct GUID *create_guid;
940 struct GUID_txt_buf buf;
941 char *guid_string;
942 struct db_context *db = op->table->local.replay_cache_db_ctx;
943 NTSTATUS status;
944
945 if (!(op->flags & SMBXSRV_OPEN_NEED_REPLAY_CACHE)) {
946 return NT_STATUS_OK;
947 }
948
949 if (op->flags & SMBXSRV_OPEN_HAVE_REPLAY_CACHE) {
950 return NT_STATUS_OK;
951 }
952
953 create_guid = &op->global->create_guid;
954 if (GUID_all_zero(create_guid)) {
955 return NT_STATUS_OK;
956 }
957
958 guid_string = GUID_buf_string(create_guid, &buf);
959 if (guid_string == NULL) {
960 return NT_STATUS_INVALID_PARAMETER;
961 }
962
963 status = dbwrap_store_uint32_bystring(db, guid_string, op->local_id);
964
965 if (NT_STATUS_IS_OK(status)) {
966 op->flags |= SMBXSRV_OPEN_HAVE_REPLAY_CACHE;
967 op->flags &= ~SMBXSRV_OPEN_NEED_REPLAY_CACHE;
968 }
969
970 return status;
971}
972
973static NTSTATUS smbXsrv_open_clear_replay_cache(struct smbXsrv_open *op)
974{
975 struct GUID *create_guid;
976 struct GUID_txt_buf buf;
977 char *guid_string;
978 struct db_context *db;
979 NTSTATUS status;
980
981 if (op->table == NULL) {
982 return NT_STATUS_OK;
983 }
984
985 db = op->table->local.replay_cache_db_ctx;
986
987 if (!(op->flags & SMBXSRV_OPEN_HAVE_REPLAY_CACHE)) {
988 return NT_STATUS_OK;
989 }
990
991 create_guid = &op->global->create_guid;
992 if (GUID_all_zero(create_guid)) {
993 return NT_STATUS_OK;
994 }
995
996 guid_string = GUID_buf_string(create_guid, &buf);
997 if (guid_string == NULL) {
998 return NT_STATUS_INVALID_PARAMETER;
999 }
1000
1001 status = dbwrap_purge_bystring(db, guid_string);
1002
1003 if (NT_STATUS_IS_OK(status)) {
1004 op->flags &= ~SMBXSRV_OPEN_HAVE_REPLAY_CACHE;
1005 }
1006
1007 return status;
1008}
1009
1010NTSTATUS smbXsrv_open_update(struct smbXsrv_open *op)
1011{
1012 struct smbXsrv_open_table *table = op->table;
1013 NTSTATUS status;
1014
1015 if (op->global->db_rec != NULL) {
1016 DEBUG(0, ("smbXsrv_open_update(0x%08x): "
1017 "Called with db_rec != NULL'\n",
1018 op->global->open_global_id));
1019 return NT_STATUS_INTERNAL_ERROR;
1020 }
1021
1022 op->global->db_rec = smbXsrv_open_global_fetch_locked(
1023 table->global.db_ctx,
1024 op->global->open_global_id,
1025 op->global /* TALLOC_CTX */);
1026 if (op->global->db_rec == NULL) {
1027 return NT_STATUS_INTERNAL_DB_ERROR;
1028 }
1029
1030 status = smbXsrv_open_global_store(op->global);
1031 if (!NT_STATUS_IS_OK(status)) {
1032 DEBUG(0,("smbXsrv_open_update: "
1033 "global_id (0x%08x) store failed - %s\n",
1034 op->global->open_global_id,
1035 nt_errstr(status)));
1036 return status;
1037 }
1038
1039 status = smbXsrv_open_set_replay_cache(op);
1040 if (!NT_STATUS_IS_OK(status)) {
1041 DBG_ERR("smbXsrv_open_set_replay_cache failed: %s\n",
1042 nt_errstr(status));
1043 return status;
1044 }
1045
1046 if (CHECK_DEBUGLVL(10)) {
1047 struct smbXsrv_openB open_blob;
1048
1049 ZERO_STRUCT(open_blob);
1050 open_blob.version = SMBXSRV_VERSION_0;
1051 open_blob.info.info0 = op;
1052
1053 DEBUG(10,("smbXsrv_open_update: global_id (0x%08x) stored\n",
1054 op->global->open_global_id));
1055 NDR_PRINT_DEBUG(smbXsrv_openB, &open_blob);
1056 }
1057
1058 return NT_STATUS_OK;
1059}
1060
1061NTSTATUS smbXsrv_open_close(struct smbXsrv_open *op, NTTIME now)
1062{
1063 struct smbXsrv_open_table *table;
1064 struct db_record *local_rec = NULL;
1065 struct db_record *global_rec = NULL;
1066 NTSTATUS status;
1067 NTSTATUS error = NT_STATUS_OK;
1068
1069 error = smbXsrv_open_clear_replay_cache(op);
1070 if (!NT_STATUS_IS_OK(error)) {
1071 DBG_ERR("smbXsrv_open_clear_replay_cache failed: %s\n",
1072 nt_errstr(error));
1073 }
1074
1075 if (op->table == NULL) {
1076 return error;
1077 }
1078
1079 table = op->table;
1080 op->table = NULL;
1081
1082 op->status = NT_STATUS_FILE_CLOSED;
1083 op->global->disconnect_time = now;
1084 server_id_set_disconnected(&op->global->server_id);
1085
1086 global_rec = op->global->db_rec;
1087 op->global->db_rec = NULL;
1088 if (global_rec == NULL) {
1089 global_rec = smbXsrv_open_global_fetch_locked(
1090 table->global.db_ctx,
1091 op->global->open_global_id,
1092 op->global /* TALLOC_CTX */);
1093 if (global_rec == NULL) {
1094 error = NT_STATUS_INTERNAL_ERROR;
1095 }
1096 }
1097
1098 if (global_rec != NULL && op->global->durable) {
1099 /*
1100 * If it is a durable open we need to update the global part
1101 * instead of deleting it
1102 */
1103 op->global->db_rec = global_rec;
1104 status = smbXsrv_open_global_store(op->global);
1105 if (NT_STATUS_IS_OK(status)) {
1106 /*
1107 * smbXsrv_open_global_store does the free
1108 * of op->global->db_rec
1109 */
1110 global_rec = NULL;
1111 }
1112 if (!NT_STATUS_IS_OK(status)) {
1113 DEBUG(0,("smbXsrv_open_close(0x%08x)"
1114 "smbXsrv_open_global_store() failed - %s\n",
1115 op->global->open_global_id,
1116 nt_errstr(status)));
1117 error = status;
1118 }
1119
1120 if (NT_STATUS_IS_OK(status) && CHECK_DEBUGLVL(10)) {
1121 struct smbXsrv_openB open_blob;
1122
1123 ZERO_STRUCT(open_blob);
1124 open_blob.version = SMBXSRV_VERSION_0;
1125 open_blob.info.info0 = op;
1126
1127 DEBUG(10,("smbXsrv_open_close(0x%08x): "
1128 "stored disconnect\n",
1129 op->global->open_global_id));
1130 NDR_PRINT_DEBUG(smbXsrv_openB, &open_blob);
1131 }
1132 }
1133
1134 if (global_rec != NULL) {
1135 status = dbwrap_record_delete(global_rec);
1136 if (!NT_STATUS_IS_OK(status)) {
1137 TDB_DATA key = dbwrap_record_get_key(global_rec);
1138
1139 DEBUG(0, ("smbXsrv_open_close(0x%08x): "
1140 "failed to delete global key '%s': %s\n",
1141 op->global->open_global_id,
1142 hex_encode_talloc(global_rec, key.dptr,
1143 key.dsize),
1144 nt_errstr(status)));
1145 error = status;
1146 }
1147 }
1148 TALLOC_FREE(global_rec);
1149
1150 local_rec = op->db_rec;
1151 if (local_rec == NULL) {
1152 local_rec = smbXsrv_open_local_fetch_locked(table->local.db_ctx,
1153 op->local_id,
1154 op /* TALLOC_CTX*/);
1155 if (local_rec == NULL) {
1156 error = NT_STATUS_INTERNAL_ERROR;
1157 }
1158 }
1159
1160 if (local_rec != NULL) {
1161 status = dbwrap_record_delete(local_rec);
1162 if (!NT_STATUS_IS_OK(status)) {
1163 TDB_DATA key = dbwrap_record_get_key(local_rec);
1164
1165 DEBUG(0, ("smbXsrv_open_close(0x%08x): "
1166 "failed to delete local key '%s': %s\n",
1167 op->global->open_global_id,
1168 hex_encode_talloc(local_rec, key.dptr,
1169 key.dsize),
1170 nt_errstr(status)));
1171 error = status;
1172 }
1173 table->local.num_opens -= 1;
1174 }
1175 if (op->db_rec == NULL) {
1176 TALLOC_FREE(local_rec);
1177 }
1178 op->db_rec = NULL;
1179
1180 if (op->compat) {
1181 op->compat->op = NULL;
1182 file_free(NULL, op->compat);
1183 op->compat = NULL;
1184 }
1185
1186 return error;
1187}
1188
1189NTSTATUS smb1srv_open_table_init(struct smbXsrv_connection *conn)
1190{
1191 uint32_t max_opens;
1192
1193 /*
1194 * Allow a range from 1..65534.
1195 *
1196 * With real_max_open_files possible ids,
1197 * truncated to the SMB1 limit of 16-bit.
1198 *
1199 * 0 and 0xFFFF are no valid ids.
1200 */
1201 max_opens = conn->client->sconn->real_max_open_files;
1202 max_opens = MIN(max_opens, UINT16_MAX - 1);
1203
1204 return smbXsrv_open_table_init(conn, 1, UINT16_MAX - 1, max_opens);
1205}
1206
1207NTSTATUS smb1srv_open_lookup(struct smbXsrv_connection *conn,
1208 uint16_t fnum, NTTIME now,
1209 struct smbXsrv_open **_open)
1210{
1211 struct smbXsrv_open_table *table = conn->client->open_table;
1212 uint32_t local_id = fnum;
1213 uint32_t global_id = 0;
1214
1215 return smbXsrv_open_local_lookup(table, local_id, global_id, now, _open);
1216}
1217
1218NTSTATUS smb2srv_open_table_init(struct smbXsrv_connection *conn)
1219{
1220 uint32_t max_opens;
1221
1222 /*
1223 * Allow a range from 1..4294967294.
1224 *
1225 * With real_max_open_files possible ids,
1226 * truncated to 16-bit (the same as SMB1 for now).
1227 *
1228 * 0 and 0xFFFFFFFF are no valid ids.
1229 *
1230 * The usage of conn->sconn->real_max_open_files
1231 * is the reason that we use one open table per
1232 * transport connection (as we still have a 1:1 mapping
1233 * between process and transport connection).
1234 */
1235 max_opens = conn->client->sconn->real_max_open_files;
1236 max_opens = MIN(max_opens, UINT16_MAX - 1);
1237
1238 return smbXsrv_open_table_init(conn, 1, UINT32_MAX - 1, max_opens);
1239}
1240
1241NTSTATUS smb2srv_open_lookup(struct smbXsrv_connection *conn,
1242 uint64_t persistent_id,
1243 uint64_t volatile_id,
1244 NTTIME now,
1245 struct smbXsrv_open **_open)
1246{
1247 struct smbXsrv_open_table *table = conn->client->open_table;
1248 uint32_t local_id = volatile_id & UINT32_MAX;
1249 uint64_t local_zeros = volatile_id & 0xFFFFFFFF00000000LLU;
1250 uint32_t global_id = persistent_id & UINT32_MAX;
1251 uint64_t global_zeros = persistent_id & 0xFFFFFFFF00000000LLU;
1252 NTSTATUS status;
1253
1254 if (local_zeros != 0) {
1255 return NT_STATUS_FILE_CLOSED;
1256 }
1257
1258 if (global_zeros != 0) {
1259 return NT_STATUS_FILE_CLOSED;
1260 }
1261
1262 if (global_id == 0) {
1263 return NT_STATUS_FILE_CLOSED;
1264 }
1265
1266 status = smbXsrv_open_local_lookup(table, local_id, global_id, now,
1267 _open);
1268 if (!NT_STATUS_IS_OK(status)) {
1269 return status;
1270 }
1271
1272 /*
1273 * Clear the replay cache for this create_guid if it exists:
1274 * This is based on the assumption that this lookup will be
1275 * triggered by a client request using the file-id for lookup.
1276 * Hence the client has proven that it has in fact seen the
1277 * reply to its initial create call. So subsequent create replays
1278 * should be treated as invalid. Hence the index for create_guid
1279 * lookup needs to be removed.
1280 */
1281 status = smbXsrv_open_clear_replay_cache(*_open);
1282
1283 return status;
1284}
1285
1286NTSTATUS smb2srv_open_lookup_replay_cache(struct smbXsrv_connection *conn,
1287 const struct GUID *create_guid,
1288 NTTIME now, /* TODO: needed ? */
1289 struct smbXsrv_open **_open)
1290{
1291 NTSTATUS status;
1292 char *guid_string;
1293 struct GUID_txt_buf buf;
1294 uint32_t local_id = 0;
1295 struct smbXsrv_open_table *table = conn->client->open_table;
1296 struct db_context *db = table->local.replay_cache_db_ctx;
1297
1298 if (GUID_all_zero(create_guid)) {
1299 return NT_STATUS_NOT_FOUND;
1300 }
1301
1302 guid_string = GUID_buf_string(create_guid, &buf);
1303 if (guid_string == NULL) {
1304 return NT_STATUS_INVALID_PARAMETER;
1305 }
1306
1307 status = dbwrap_fetch_uint32_bystring(db, guid_string, &local_id);
1308 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
1309 return status;
1310 }
1311 if (!NT_STATUS_IS_OK(status)) {
1312 DBG_ERR("failed to fetch local_id from replay cache: %s\n",
1313 nt_errstr(status));
1314 return status;
1315 }
1316
1317 status = smbXsrv_open_local_lookup(table, local_id, 0, /* global_id */
1318 now, _open);
1319 if (!NT_STATUS_IS_OK(status)) {
1320 DBG_ERR("smbXsrv_open_local_lookup failed for local_id %u\n",
1321 (unsigned)local_id);
1322 }
1323
1324 return status;
1325}
1326
1327NTSTATUS smb2srv_open_recreate(struct smbXsrv_connection *conn,
1328 struct auth_session_info *session_info,
1329 uint64_t persistent_id,
1330 const struct GUID *create_guid,
1331 NTTIME now,
1332 struct smbXsrv_open **_open)
1333{
1334 struct smbXsrv_open_table *table = conn->client->open_table;
1335 struct db_record *local_rec = NULL;
1336 struct smbXsrv_open *op = NULL;
1337 void *ptr = NULL;
1338 TDB_DATA val;
1339 uint32_t global_id = persistent_id & UINT32_MAX;
1340 uint64_t global_zeros = persistent_id & 0xFFFFFFFF00000000LLU;
1341 NTSTATUS status;
1342 struct security_token *current_token = NULL;
1343
1344 if (session_info == NULL) {
1345 DEBUG(10, ("session_info=NULL\n"));
1346 return NT_STATUS_INVALID_HANDLE;
1347 }
1348 current_token = session_info->security_token;
1349
1350 if (current_token == NULL) {
1351 DEBUG(10, ("current_token=NULL\n"));
1352 return NT_STATUS_INVALID_HANDLE;
1353 }
1354
1355 if (global_zeros != 0) {
1356 DEBUG(10, ("global_zeros!=0\n"));
1357 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1358 }
1359
1360 op = talloc_zero(table, struct smbXsrv_open);
1361 if (op == NULL) {
1362 return NT_STATUS_NO_MEMORY;
1363 }
1364 op->table = table;
1365
1366 status = smbXsrv_open_global_lookup(table, global_id, op, &op->global);
1367 if (!NT_STATUS_IS_OK(status)) {
1368 TALLOC_FREE(op);
1369 DEBUG(10, ("smbXsrv_open_global_lookup returned %s\n",
1370 nt_errstr(status)));
1371 return status;
1372 }
1373
1374 /*
1375 * If the provided create_guid is NULL, this means that
1376 * the reconnect request was a v1 request. In that case
1377 * we should skipt the create GUID verification, since
1378 * it is valid to v1-reconnect a v2-opened handle.
1379 */
1380 if ((create_guid != NULL) &&
1381 !GUID_equal(&op->global->create_guid, create_guid))
1382 {
1383 TALLOC_FREE(op);
1384 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1385 }
1386
1387 if (!security_token_is_sid(current_token, &op->global->open_owner)) {
1388 TALLOC_FREE(op);
1389 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1390 }
1391
1392 if (!op->global->durable) {
1393 TALLOC_FREE(op);
1394 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1395 }
1396
1397 if (table->local.num_opens >= table->local.max_opens) {
1398 TALLOC_FREE(op);
1399 return NT_STATUS_INSUFFICIENT_RESOURCES;
1400 }
1401
1402 status = smbXsrv_open_local_allocate_id(table->local.db_ctx,
1403 table->local.lowest_id,
1404 table->local.highest_id,
1405 op,
1406 &local_rec,
1407 &op->local_id);
1408 if (!NT_STATUS_IS_OK(status)) {
1409 TALLOC_FREE(op);
1410 return status;
1411 }
1412
1413 op->idle_time = now;
1414 op->status = NT_STATUS_FILE_CLOSED;
1415
1416 op->global->open_volatile_id = op->local_id;
1417 op->global->server_id = messaging_server_id(conn->msg_ctx);
1418
1419 ptr = op;
1420 val = make_tdb_data((uint8_t const *)&ptr, sizeof(ptr));
1421 status = dbwrap_record_store(local_rec, val, TDB_REPLACE);
1422 TALLOC_FREE(local_rec);
1423 if (!NT_STATUS_IS_OK(status)) {
1424 TALLOC_FREE(op);
1425 return status;
1426 }
1427 table->local.num_opens += 1;
1428
1429 talloc_set_destructor(op, smbXsrv_open_destructor);
1430
1431 status = smbXsrv_open_global_store(op->global);
1432 if (!NT_STATUS_IS_OK(status)) {
1433 TALLOC_FREE(op);
1434 return status;
1435 }
1436
1437 if (CHECK_DEBUGLVL(10)) {
1438 struct smbXsrv_openB open_blob;
1439
1440 ZERO_STRUCT(open_blob);
1441 open_blob.version = 0;
1442 open_blob.info.info0 = op;
1443
1444 DEBUG(10,("smbXsrv_open_recreate: global_id (0x%08x) stored\n",
1445 op->global->open_global_id));
1446 NDR_PRINT_DEBUG(smbXsrv_openB, &open_blob);
1447 }
1448
1449 *_open = op;
1450 return NT_STATUS_OK;
1451}
1452
1453
1454static NTSTATUS smbXsrv_open_global_parse_record(TALLOC_CTX *mem_ctx,
1455 struct db_record *rec,
1456 struct smbXsrv_open_global0 **global)
1457{
1458 TDB_DATA key = dbwrap_record_get_key(rec);
1459 TDB_DATA val = dbwrap_record_get_value(rec);
1460 DATA_BLOB blob = data_blob_const(val.dptr, val.dsize);
1461 struct smbXsrv_open_globalB global_blob;
1462 enum ndr_err_code ndr_err;
1463 NTSTATUS status;
1464 TALLOC_CTX *frame = talloc_stackframe();
1465
1466 ndr_err = ndr_pull_struct_blob(&blob, frame, &global_blob,
1467 (ndr_pull_flags_fn_t)ndr_pull_smbXsrv_open_globalB);
1468 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1469 DEBUG(1,("Invalid record in smbXsrv_open_global.tdb:"
1470 "key '%s' ndr_pull_struct_blob - %s\n",
1471 hex_encode_talloc(frame, key.dptr, key.dsize),
1472 ndr_errstr(ndr_err)));
1473 status = ndr_map_error2ntstatus(ndr_err);
1474 goto done;
1475 }
1476
1477 if (global_blob.version != SMBXSRV_VERSION_0) {
1478 status = NT_STATUS_INTERNAL_DB_CORRUPTION;
1479 DEBUG(1,("Invalid record in smbXsrv_open_global.tdb:"
1480 "key '%s' unsuported version - %d - %s\n",
1481 hex_encode_talloc(frame, key.dptr, key.dsize),
1482 (int)global_blob.version,
1483 nt_errstr(status)));
1484 goto done;
1485 }
1486
1487 *global = talloc_move(mem_ctx, &global_blob.info.info0);
1488 status = NT_STATUS_OK;
1489done:
1490 talloc_free(frame);
1491 return status;
1492}
1493
1494struct smbXsrv_open_global_traverse_state {
1495 int (*fn)(struct smbXsrv_open_global0 *, void *);
1496 void *private_data;
1497};
1498
1499static int smbXsrv_open_global_traverse_fn(struct db_record *rec, void *data)
1500{
1501 struct smbXsrv_open_global_traverse_state *state =
1502 (struct smbXsrv_open_global_traverse_state*)data;
1503 struct smbXsrv_open_global0 *global = NULL;
1504 NTSTATUS status;
1505 int ret = -1;
1506
1507 status = smbXsrv_open_global_parse_record(talloc_tos(), rec, &global);
1508 if (!NT_STATUS_IS_OK(status)) {
1509 return -1;
1510 }
1511
1512 global->db_rec = rec;
1513 ret = state->fn(global, state->private_data);
1514 talloc_free(global);
1515 return ret;
1516}
1517
1518NTSTATUS smbXsrv_open_global_traverse(
1519 int (*fn)(struct smbXsrv_open_global0 *, void *),
1520 void *private_data)
1521{
1522
1523 NTSTATUS status;
1524 int count = 0;
1525 struct smbXsrv_open_global_traverse_state state = {
1526 .fn = fn,
1527 .private_data = private_data,
1528 };
1529
1530 become_root();
1531 status = smbXsrv_open_global_init();
1532 if (!NT_STATUS_IS_OK(status)) {
1533 unbecome_root();
1534 DEBUG(0, ("Failed to initialize open_global: %s\n",
1535 nt_errstr(status)));
1536 return status;
1537 }
1538
1539 status = dbwrap_traverse_read(smbXsrv_open_global_db_ctx,
1540 smbXsrv_open_global_traverse_fn,
1541 &state,
1542 &count);
1543 unbecome_root();
1544
1545 return status;
1546}
1547
1548NTSTATUS smbXsrv_open_cleanup(uint64_t persistent_id)
1549{
1550 NTSTATUS status = NT_STATUS_OK;
1551 TALLOC_CTX *frame = talloc_stackframe();
1552 struct smbXsrv_open_global0 *op = NULL;
1553 TDB_DATA val;
1554 struct db_record *rec;
1555 bool delete_open = false;
1556 uint32_t global_id = persistent_id & UINT32_MAX;
1557
1558 rec = smbXsrv_open_global_fetch_locked(smbXsrv_open_global_db_ctx,
1559 global_id,
1560 frame);
1561 if (rec == NULL) {
1562 status = NT_STATUS_NOT_FOUND;
1563 goto done;
1564 }
1565
1566 val = dbwrap_record_get_value(rec);
1567 if (val.dsize == 0) {
1568 DEBUG(10, ("smbXsrv_open_cleanup[global: 0x%08x] "
1569 "empty record in %s, skipping...\n",
1570 global_id, dbwrap_name(smbXsrv_open_global_db_ctx)));
1571 goto done;
1572 }
1573
1574 status = smbXsrv_open_global_parse_record(talloc_tos(), rec, &op);
1575 if (!NT_STATUS_IS_OK(status)) {
1576 DEBUG(1, ("smbXsrv_open_cleanup[global: 0x%08x] "
1577 "failed to read record: %s\n",
1578 global_id, nt_errstr(status)));
1579 goto done;
1580 }
1581
1582 if (server_id_is_disconnected(&op->server_id)) {
1583 struct timeval now, disconnect_time;
1584 int64_t tdiff;
1585 now = timeval_current();
1586 nttime_to_timeval(&disconnect_time, op->disconnect_time);
1587 tdiff = usec_time_diff(&now, &disconnect_time);
1588 delete_open = (tdiff >= 1000*op->durable_timeout_msec);
1589
1590 DEBUG(10, ("smbXsrv_open_cleanup[global: 0x%08x] "
1591 "disconnected at [%s] %us ago with "
1592 "timeout of %us -%s reached\n",
1593 global_id,
1594 nt_time_string(frame, op->disconnect_time),
1595 (unsigned)(tdiff/1000000),
1596 op->durable_timeout_msec / 1000,
1597 delete_open ? "" : " not"));
1598 } else if (!serverid_exists(&op->server_id)) {
1599 struct server_id_buf idbuf;
1600 DEBUG(10, ("smbXsrv_open_cleanup[global: 0x%08x] "
1601 "server[%s] does not exist\n",
1602 global_id,
1603 server_id_str_buf(op->server_id, &idbuf)));
1604 delete_open = true;
1605 }
1606
1607 if (!delete_open) {
1608 goto done;
1609 }
1610
1611 status = dbwrap_record_delete(rec);
1612 if (!NT_STATUS_IS_OK(status)) {
1613 DEBUG(1, ("smbXsrv_open_cleanup[global: 0x%08x] "
1614 "failed to delete record"
1615 "from %s: %s\n", global_id,
1616 dbwrap_name(smbXsrv_open_global_db_ctx),
1617 nt_errstr(status)));
1618 goto done;
1619 }
1620
1621 DEBUG(10, ("smbXsrv_open_cleanup[global: 0x%08x] "
1622 "delete record from %s\n",
1623 global_id,
1624 dbwrap_name(smbXsrv_open_global_db_ctx)));
1625
1626done:
1627 talloc_free(frame);
1628 return status;
1629}
Note: See TracBrowser for help on using the repository browser.