2 Unix SMB/CIFS implementation.
4 Copyright (C) Stefan Metzmacher 2012
5 Copyright (C) Michael Adam 2012
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.
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.
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/>.
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"
30 #include "lib/util/util_tdb.h"
31 #include "librpc/gen_ndr/ndr_smbXsrv.h"
32 #include <ccan/hash/hash.h>
35 struct smbXsrv_open_table {
37 struct db_context *db_ctx;
44 struct db_context *db_ctx;
48 static struct db_context *smbXsrv_open_global_db_ctx = NULL;
50 NTSTATUS smbXsrv_open_global_init(void)
52 const char *global_path = NULL;
53 struct db_context *db_ctx = NULL;
55 if (smbXsrv_open_global_db_ctx != NULL) {
59 global_path = lock_path("smbXsrv_open_global.tdb");
61 db_ctx = db_open(NULL, global_path,
65 TDB_INCOMPATIBLE_HASH,
66 O_RDWR | O_CREAT, 0600,
71 status = map_nt_error_from_unix_common(errno);
76 smbXsrv_open_global_db_ctx = db_ctx;
83 * We need to store the keys in big endian so that dbwrap_rbt's memcmp
84 * has the same result as integer comparison between the uint32_t
87 * TODO: implement string based key
90 #define SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE sizeof(uint32_t)
92 static TDB_DATA smbXsrv_open_global_id_to_key(uint32_t id,
97 RSIVAL(key_buf, 0, id);
99 key = make_tdb_data(key_buf, SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE);
105 static NTSTATUS smbXsrv_open_global_key_to_id(TDB_DATA key, uint32_t *id)
108 return NT_STATUS_INVALID_PARAMETER;
111 if (key.dsize != SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE) {
112 return NT_STATUS_INTERNAL_DB_CORRUPTION;
115 *id = RIVAL(key.dptr, 0);
121 #define SMBXSRV_OPEN_LOCAL_TDB_KEY_SIZE sizeof(uint32_t)
123 static TDB_DATA smbXsrv_open_local_id_to_key(uint32_t id,
128 RSIVAL(key_buf, 0, id);
130 key = make_tdb_data(key_buf, SMBXSRV_OPEN_LOCAL_TDB_KEY_SIZE);
135 static NTSTATUS smbXsrv_open_local_key_to_id(TDB_DATA key, uint32_t *id)
138 return NT_STATUS_INVALID_PARAMETER;
141 if (key.dsize != SMBXSRV_OPEN_LOCAL_TDB_KEY_SIZE) {
142 return NT_STATUS_INTERNAL_DB_CORRUPTION;
145 *id = RIVAL(key.dptr, 0);
150 static NTSTATUS smbXsrv_open_table_init(struct smbXsrv_connection *conn,
155 struct smbXsrv_open_table *table;
159 if (lowest_id > highest_id) {
160 return NT_STATUS_INTERNAL_ERROR;
163 max_range = highest_id;
164 max_range -= lowest_id;
167 if (max_opens > max_range) {
168 return NT_STATUS_INTERNAL_ERROR;
171 table = talloc_zero(conn, struct smbXsrv_open_table);
173 return NT_STATUS_NO_MEMORY;
176 table->local.db_ctx = db_open_rbt(table);
177 if (table->local.db_ctx == NULL) {
179 return NT_STATUS_NO_MEMORY;
181 table->local.lowest_id = lowest_id;
182 table->local.highest_id = highest_id;
183 table->local.max_opens = max_opens;
185 status = smbXsrv_open_global_init();
186 if (!NT_STATUS_IS_OK(status)) {
191 table->global.db_ctx = smbXsrv_open_global_db_ctx;
193 conn->open_table = table;
197 struct smbXsrv_open_local_allocate_state {
198 const uint32_t lowest_id;
199 const uint32_t highest_id;
205 static int smbXsrv_open_local_allocate_traverse(struct db_record *rec,
208 struct smbXsrv_open_local_allocate_state *state =
209 (struct smbXsrv_open_local_allocate_state *)private_data;
210 TDB_DATA key = dbwrap_record_get_key(rec);
214 status = smbXsrv_open_local_key_to_id(key, &id);
215 if (!NT_STATUS_IS_OK(status)) {
216 state->status = status;
220 if (id <= state->last_id) {
221 state->status = NT_STATUS_INTERNAL_DB_CORRUPTION;
226 if (id > state->useable_id) {
227 state->status = NT_STATUS_OK;
231 if (state->useable_id == state->highest_id) {
232 state->status = NT_STATUS_INSUFFICIENT_RESOURCES;
236 state->useable_id +=1;
240 static NTSTATUS smbXsrv_open_local_allocate_id(struct db_context *db,
244 struct db_record **_rec,
247 struct smbXsrv_open_local_allocate_state state = {
248 .lowest_id = lowest_id,
249 .highest_id = highest_id,
251 .useable_id = lowest_id,
252 .status = NT_STATUS_INTERNAL_ERROR,
262 if (lowest_id > highest_id) {
263 return NT_STATUS_INSUFFICIENT_RESOURCES;
267 * first we try randomly
269 range = (highest_id - lowest_id) + 1;
271 for (i = 0; i < (range / 2); i++) {
273 uint8_t key_buf[SMBXSRV_OPEN_LOCAL_TDB_KEY_SIZE];
276 struct db_record *rec = NULL;
278 id = generate_random() % range;
281 if (id < lowest_id) {
284 if (id > highest_id) {
288 key = smbXsrv_open_local_id_to_key(id, key_buf);
290 rec = dbwrap_fetch_locked(db, mem_ctx, key);
292 return NT_STATUS_INSUFFICIENT_RESOURCES;
295 val = dbwrap_record_get_value(rec);
296 if (val.dsize != 0) {
307 * if the range is almost full,
308 * we traverse the whole table
309 * (this relies on sorted behavior of dbwrap_rbt)
311 status = dbwrap_traverse_read(db, smbXsrv_open_local_allocate_traverse,
313 if (NT_STATUS_IS_OK(status)) {
314 if (NT_STATUS_IS_OK(state.status)) {
315 return NT_STATUS_INTERNAL_ERROR;
318 if (!NT_STATUS_EQUAL(state.status, NT_STATUS_INTERNAL_ERROR)) {
322 if (state.useable_id <= state.highest_id) {
323 state.status = NT_STATUS_OK;
325 return NT_STATUS_INSUFFICIENT_RESOURCES;
327 } else if (!NT_STATUS_EQUAL(status, NT_STATUS_INTERNAL_DB_CORRUPTION)) {
329 * Here we really expect NT_STATUS_INTERNAL_DB_CORRUPTION!
331 * If we get anything else it is an error, because it
332 * means we did not manage to find a free slot in
335 return NT_STATUS_INSUFFICIENT_RESOURCES;
338 if (NT_STATUS_IS_OK(state.status)) {
340 uint8_t key_buf[SMBXSRV_OPEN_LOCAL_TDB_KEY_SIZE];
343 struct db_record *rec = NULL;
345 id = state.useable_id;
347 key = smbXsrv_open_local_id_to_key(id, key_buf);
349 rec = dbwrap_fetch_locked(db, mem_ctx, key);
351 return NT_STATUS_INSUFFICIENT_RESOURCES;
354 val = dbwrap_record_get_value(rec);
355 if (val.dsize != 0) {
357 return NT_STATUS_INTERNAL_DB_CORRUPTION;
368 struct smbXsrv_open_local_fetch_state {
369 struct smbXsrv_open *op;
373 static void smbXsrv_open_local_fetch_parser(TDB_DATA key, TDB_DATA data,
376 struct smbXsrv_open_local_fetch_state *state =
377 (struct smbXsrv_open_local_fetch_state *)private_data;
380 if (data.dsize != sizeof(ptr)) {
381 state->status = NT_STATUS_INTERNAL_DB_ERROR;
385 memcpy(&ptr, data.dptr, data.dsize);
386 state->op = talloc_get_type_abort(ptr, struct smbXsrv_open);
387 state->status = NT_STATUS_OK;
390 static NTSTATUS smbXsrv_open_local_lookup(struct smbXsrv_open_table *table,
391 uint32_t open_local_id,
392 uint32_t open_global_id,
394 struct smbXsrv_open **_open)
396 struct smbXsrv_open_local_fetch_state state = {
398 .status = NT_STATUS_INTERNAL_ERROR,
400 uint8_t key_buf[SMBXSRV_OPEN_LOCAL_TDB_KEY_SIZE];
406 if (open_local_id == 0) {
407 return NT_STATUS_FILE_CLOSED;
411 /* this might happen before the end of negprot */
412 return NT_STATUS_FILE_CLOSED;
415 if (table->local.db_ctx == NULL) {
416 return NT_STATUS_INTERNAL_ERROR;
419 key = smbXsrv_open_local_id_to_key(open_local_id, key_buf);
421 status = dbwrap_parse_record(table->local.db_ctx, key,
422 smbXsrv_open_local_fetch_parser,
424 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
425 return NT_STATUS_FILE_CLOSED;
426 } else if (!NT_STATUS_IS_OK(status)) {
429 if (!NT_STATUS_IS_OK(state.status)) {
433 if (NT_STATUS_EQUAL(state.op->status, NT_STATUS_FILE_CLOSED)) {
434 return NT_STATUS_FILE_CLOSED;
437 if (open_global_id == 0) {
438 /* make the global check a no-op for SMB1 */
439 open_global_id = state.op->global->open_global_id;
442 if (state.op->global->open_global_id != open_global_id) {
443 return NT_STATUS_FILE_CLOSED;
446 state.op->idle_time = now;
449 return state.op->status;
452 static int smbXsrv_open_global_destructor(struct smbXsrv_open_global0 *global)
457 static void smbXsrv_open_global_verify_record(struct db_record *db_rec,
461 struct smbXsrv_open_global0 **_g);
463 static NTSTATUS smbXsrv_open_global_allocate(struct db_context *db,
465 struct smbXsrv_open_global0 **_global)
468 struct smbXsrv_open_global0 *global = NULL;
469 uint32_t last_free = 0;
470 const uint32_t min_tries = 3;
474 global = talloc_zero(mem_ctx, struct smbXsrv_open_global0);
475 if (global == NULL) {
476 return NT_STATUS_NO_MEMORY;
478 talloc_set_destructor(global, smbXsrv_open_global_destructor);
481 * Here we just randomly try the whole 32-bit space
483 * We use just 32-bit, because we want to reuse the
486 for (i = 0; i < UINT32_MAX; i++) {
487 bool is_free = false;
488 bool was_free = false;
490 uint8_t key_buf[SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE];
493 if (i >= min_tries && last_free != 0) {
496 id = generate_random();
501 if (id == UINT32_MAX) {
505 key = smbXsrv_open_global_id_to_key(id, key_buf);
507 global->db_rec = dbwrap_fetch_locked(db, mem_ctx, key);
508 if (global->db_rec == NULL) {
510 return NT_STATUS_INSUFFICIENT_RESOURCES;
513 smbXsrv_open_global_verify_record(global->db_rec,
519 TALLOC_FREE(global->db_rec);
523 if (!was_free && i < min_tries) {
525 * The session_id is free now,
526 * but was not free before.
528 * This happens if a smbd crashed
529 * and did not cleanup the record.
531 * If this is one of our first tries,
532 * then we try to find a real free one.
534 if (last_free == 0) {
537 TALLOC_FREE(global->db_rec);
541 global->open_global_id = id;
547 /* should not be reached */
549 return NT_STATUS_INTERNAL_ERROR;
552 static void smbXsrv_open_global_verify_record(struct db_record *db_rec,
556 struct smbXsrv_open_global0 **_g)
561 struct smbXsrv_open_globalB global_blob;
562 enum ndr_err_code ndr_err;
563 struct smbXsrv_open_global0 *global = NULL;
565 TALLOC_CTX *frame = talloc_stackframe();
576 key = dbwrap_record_get_key(db_rec);
578 val = dbwrap_record_get_value(db_rec);
579 if (val.dsize == 0) {
588 blob = data_blob_const(val.dptr, val.dsize);
590 ndr_err = ndr_pull_struct_blob(&blob, frame, &global_blob,
591 (ndr_pull_flags_fn_t)ndr_pull_smbXsrv_open_globalB);
592 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
593 NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
594 DEBUG(1,("smbXsrv_open_global_verify_record: "
595 "key '%s' ndr_pull_struct_blob - %s\n",
596 hex_encode_talloc(frame, key.dptr, key.dsize),
602 DEBUG(10,("smbXsrv_open_global_verify_record\n"));
603 if (CHECK_DEBUGLVL(10)) {
604 NDR_PRINT_DEBUG(smbXsrv_open_globalB, &global_blob);
607 if (global_blob.version != SMBXSRV_VERSION_0) {
608 DEBUG(0,("smbXsrv_open_global_verify_record: "
609 "key '%s' use unsupported version %u\n",
610 hex_encode_talloc(frame, key.dptr, key.dsize),
611 global_blob.version));
612 NDR_PRINT_DEBUG(smbXsrv_open_globalB, &global_blob);
617 global = global_blob.info.info0;
619 if (server_id_is_disconnected(&global->server_id)) {
622 exists = serverid_exists(&global->server_id);
625 DEBUG(2,("smbXsrv_open_global_verify_record: "
626 "key '%s' server_id %s does not exist.\n",
627 hex_encode_talloc(frame, key.dptr, key.dsize),
628 server_id_str(frame, &global->server_id)));
629 if (CHECK_DEBUGLVL(2)) {
630 NDR_PRINT_DEBUG(smbXsrv_open_globalB, &global_blob);
633 dbwrap_record_delete(db_rec);
639 *_g = talloc_move(mem_ctx, &global);
644 static NTSTATUS smbXsrv_open_global_store(struct smbXsrv_open_global0 *global)
646 struct smbXsrv_open_globalB global_blob;
647 DATA_BLOB blob = data_blob_null;
651 enum ndr_err_code ndr_err;
654 * TODO: if we use other versions than '0'
655 * we would add glue code here, that would be able to
656 * store the information in the old format.
659 if (global->db_rec == NULL) {
660 return NT_STATUS_INTERNAL_ERROR;
663 key = dbwrap_record_get_key(global->db_rec);
664 val = dbwrap_record_get_value(global->db_rec);
666 ZERO_STRUCT(global_blob);
667 global_blob.version = smbXsrv_version_global_current();
668 if (val.dsize >= 8) {
669 global_blob.seqnum = IVAL(val.dptr, 4);
671 global_blob.seqnum += 1;
672 global_blob.info.info0 = global;
674 ndr_err = ndr_push_struct_blob(&blob, global->db_rec, &global_blob,
675 (ndr_push_flags_fn_t)ndr_push_smbXsrv_open_globalB);
676 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
677 status = ndr_map_error2ntstatus(ndr_err);
678 DEBUG(1,("smbXsrv_open_global_store: key '%s' ndr_push - %s\n",
679 hex_encode_talloc(global->db_rec, key.dptr, key.dsize),
681 TALLOC_FREE(global->db_rec);
685 val = make_tdb_data(blob.data, blob.length);
686 status = dbwrap_record_store(global->db_rec, val, TDB_REPLACE);
687 if (!NT_STATUS_IS_OK(status)) {
688 DEBUG(1,("smbXsrv_open_global_store: key '%s' store - %s\n",
689 hex_encode_talloc(global->db_rec, key.dptr, key.dsize),
691 TALLOC_FREE(global->db_rec);
695 if (CHECK_DEBUGLVL(10)) {
696 DEBUG(10,("smbXsrv_open_global_store: key '%s' stored\n",
697 hex_encode_talloc(global->db_rec, key.dptr, key.dsize)));
698 NDR_PRINT_DEBUG(smbXsrv_open_globalB, &global_blob);
701 TALLOC_FREE(global->db_rec);
706 static NTSTATUS smbXsrv_open_global_lookup(struct smbXsrv_open_table *table,
707 uint32_t open_global_id,
709 struct smbXsrv_open_global0 **_global)
712 uint8_t key_buf[SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE];
713 struct db_record *global_rec = NULL;
714 bool is_free = false;
718 if (table->global.db_ctx == NULL) {
719 return NT_STATUS_INTERNAL_ERROR;
722 key = smbXsrv_open_global_id_to_key(open_global_id, key_buf);
724 global_rec = dbwrap_fetch_locked(table->global.db_ctx, mem_ctx, key);
725 if (global_rec == NULL) {
726 DEBUG(0, ("smbXsrv_open_global_lookup(0x%08x): "
727 "Failed to lock global key '%s'\n",
729 hex_encode_talloc(talloc_tos(), key.dptr,
731 return NT_STATUS_INTERNAL_DB_ERROR;
734 smbXsrv_open_global_verify_record(global_rec,
740 talloc_free(global_rec);
741 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
744 (*_global)->db_rec = talloc_move(*_global, &global_rec);
746 talloc_set_destructor(*_global, smbXsrv_open_global_destructor);
751 static int smbXsrv_open_destructor(struct smbXsrv_open *op)
755 status = smbXsrv_open_close(op, 0);
756 if (!NT_STATUS_IS_OK(status)) {
757 DEBUG(0, ("smbXsrv_open_destructor: "
758 "smbXsrv_open_close() failed - %s\n",
762 TALLOC_FREE(op->global);
767 NTSTATUS smbXsrv_open_create(struct smbXsrv_connection *conn,
768 struct auth_session_info *session_info,
770 struct smbXsrv_open **_open)
772 struct smbXsrv_open_table *table = conn->open_table;
773 struct db_record *local_rec = NULL;
774 struct smbXsrv_open *op = NULL;
777 struct smbXsrv_open_global0 *global = NULL;
779 struct dom_sid *current_sid = NULL;
780 struct security_token *current_token = NULL;
782 if (session_info == NULL) {
783 return NT_STATUS_INVALID_HANDLE;
785 current_token = session_info->security_token;
787 if (current_token == NULL) {
788 return NT_STATUS_INVALID_HANDLE;
791 if (current_token->num_sids > PRIMARY_USER_SID_INDEX) {
792 current_sid = ¤t_token->sids[PRIMARY_USER_SID_INDEX];
795 if (current_sid == NULL) {
796 return NT_STATUS_INVALID_HANDLE;
799 if (table->local.num_opens >= table->local.max_opens) {
800 return NT_STATUS_INSUFFICIENT_RESOURCES;
803 op = talloc_zero(table, struct smbXsrv_open);
805 return NT_STATUS_NO_MEMORY;
808 op->status = NT_STATUS_OK; /* TODO: start with INTERNAL_ERROR */
811 status = smbXsrv_open_global_allocate(table->global.db_ctx,
813 if (!NT_STATUS_IS_OK(status)) {
819 status = smbXsrv_open_local_allocate_id(table->local.db_ctx,
820 table->local.lowest_id,
821 table->local.highest_id,
825 if (!NT_STATUS_IS_OK(status)) {
830 global->open_persistent_id = global->open_global_id;
831 global->open_volatile_id = op->local_id;
833 global->server_id = messaging_server_id(conn->msg_ctx);
834 global->open_time = now;
835 global->open_owner = *current_sid;
836 if (conn->protocol >= PROTOCOL_SMB2_10) {
837 global->client_guid = conn->smb2.client.guid;
841 val = make_tdb_data((uint8_t const *)&ptr, sizeof(ptr));
842 status = dbwrap_record_store(local_rec, val, TDB_REPLACE);
843 TALLOC_FREE(local_rec);
844 if (!NT_STATUS_IS_OK(status)) {
848 table->local.num_opens += 1;
850 talloc_set_destructor(op, smbXsrv_open_destructor);
852 status = smbXsrv_open_global_store(global);
853 if (!NT_STATUS_IS_OK(status)) {
854 DEBUG(0,("smbXsrv_open_create: "
855 "global_id (0x%08x) store failed - %s\n",
856 op->global->open_global_id,
862 if (CHECK_DEBUGLVL(10)) {
863 struct smbXsrv_openB open_blob;
865 ZERO_STRUCT(open_blob);
866 open_blob.version = SMBXSRV_VERSION_0;
867 open_blob.info.info0 = op;
869 DEBUG(10,("smbXsrv_open_create: global_id (0x%08x) stored\n",
870 op->global->open_global_id));
871 NDR_PRINT_DEBUG(smbXsrv_openB, &open_blob);
878 uint32_t smbXsrv_open_hash(struct smbXsrv_open *_open)
883 SBVAL(buf, 0, _open->global->open_persistent_id);
884 SBVAL(buf, 8, _open->global->open_volatile_id);
885 SBVAL(buf, 16, _open->global->open_time);
887 ret = hash(buf, sizeof(buf), 0);
896 NTSTATUS smbXsrv_open_update(struct smbXsrv_open *op)
898 struct smbXsrv_open_table *table = op->table;
900 uint8_t key_buf[SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE];
903 if (op->global->db_rec != NULL) {
904 DEBUG(0, ("smbXsrv_open_update(0x%08x): "
905 "Called with db_rec != NULL'\n",
906 op->global->open_global_id));
907 return NT_STATUS_INTERNAL_ERROR;
910 key = smbXsrv_open_global_id_to_key(op->global->open_global_id,
913 op->global->db_rec = dbwrap_fetch_locked(table->global.db_ctx,
915 if (op->global->db_rec == NULL) {
916 DEBUG(0, ("smbXsrv_open_update(0x%08x): "
917 "Failed to lock global key '%s'\n",
918 op->global->open_global_id,
919 hex_encode_talloc(talloc_tos(), key.dptr,
921 return NT_STATUS_INTERNAL_DB_ERROR;
924 status = smbXsrv_open_global_store(op->global);
925 if (!NT_STATUS_IS_OK(status)) {
926 DEBUG(0,("smbXsrv_open_update: "
927 "global_id (0x%08x) store failed - %s\n",
928 op->global->open_global_id,
933 if (CHECK_DEBUGLVL(10)) {
934 struct smbXsrv_openB open_blob;
936 ZERO_STRUCT(open_blob);
937 open_blob.version = SMBXSRV_VERSION_0;
938 open_blob.info.info0 = op;
940 DEBUG(10,("smbXsrv_open_update: global_id (0x%08x) stored\n",
941 op->global->open_global_id));
942 NDR_PRINT_DEBUG(smbXsrv_openB, &open_blob);
948 NTSTATUS smbXsrv_open_close(struct smbXsrv_open *op, NTTIME now)
950 struct smbXsrv_open_table *table;
951 struct db_record *local_rec = NULL;
952 struct db_record *global_rec = NULL;
954 NTSTATUS error = NT_STATUS_OK;
956 if (op->table == NULL) {
963 op->status = NT_STATUS_FILE_CLOSED;
964 op->global->disconnect_time = now;
965 server_id_set_disconnected(&op->global->server_id);
967 global_rec = op->global->db_rec;
968 op->global->db_rec = NULL;
969 if (global_rec == NULL) {
970 uint8_t key_buf[SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE];
973 key = smbXsrv_open_global_id_to_key(
974 op->global->open_global_id,
977 global_rec = dbwrap_fetch_locked(table->global.db_ctx,
979 if (global_rec == NULL) {
980 DEBUG(0, ("smbXsrv_open_close(0x%08x): "
981 "Failed to lock global key '%s'\n",
982 op->global->open_global_id,
983 hex_encode_talloc(global_rec, key.dptr,
985 error = NT_STATUS_INTERNAL_ERROR;
989 if (global_rec != NULL && op->global->durable) {
991 * If it is a durable open we need to update the global part
992 * instead of deleting it
994 op->global->db_rec = global_rec;
995 status = smbXsrv_open_global_store(op->global);
996 if (NT_STATUS_IS_OK(status)) {
998 * smbXsrv_open_global_store does the free
999 * of op->global->db_rec
1003 if (!NT_STATUS_IS_OK(status)) {
1004 DEBUG(0,("smbXsrv_open_close(0x%08x)"
1005 "smbXsrv_open_global_store() failed - %s\n",
1006 op->global->open_global_id,
1007 nt_errstr(status)));
1011 if (NT_STATUS_IS_OK(status) && CHECK_DEBUGLVL(10)) {
1012 struct smbXsrv_openB open_blob;
1014 ZERO_STRUCT(open_blob);
1015 open_blob.version = SMBXSRV_VERSION_0;
1016 open_blob.info.info0 = op;
1018 DEBUG(10,("smbXsrv_open_close(0x%08x): "
1019 "stored disconnect\n",
1020 op->global->open_global_id));
1021 NDR_PRINT_DEBUG(smbXsrv_openB, &open_blob);
1025 if (global_rec != NULL) {
1026 status = dbwrap_record_delete(global_rec);
1027 if (!NT_STATUS_IS_OK(status)) {
1028 TDB_DATA key = dbwrap_record_get_key(global_rec);
1030 DEBUG(0, ("smbXsrv_open_close(0x%08x): "
1031 "failed to delete global key '%s': %s\n",
1032 op->global->open_global_id,
1033 hex_encode_talloc(global_rec, key.dptr,
1035 nt_errstr(status)));
1039 TALLOC_FREE(global_rec);
1041 local_rec = op->db_rec;
1042 if (local_rec == NULL) {
1043 uint8_t key_buf[SMBXSRV_OPEN_LOCAL_TDB_KEY_SIZE];
1046 key = smbXsrv_open_local_id_to_key(op->local_id, key_buf);
1048 local_rec = dbwrap_fetch_locked(table->local.db_ctx,
1050 if (local_rec == NULL) {
1051 DEBUG(0, ("smbXsrv_open_close(0x%08x): "
1052 "Failed to lock local key '%s'\n",
1053 op->global->open_global_id,
1054 hex_encode_talloc(local_rec, key.dptr,
1056 error = NT_STATUS_INTERNAL_ERROR;
1060 if (local_rec != NULL) {
1061 status = dbwrap_record_delete(local_rec);
1062 if (!NT_STATUS_IS_OK(status)) {
1063 TDB_DATA key = dbwrap_record_get_key(local_rec);
1065 DEBUG(0, ("smbXsrv_open_close(0x%08x): "
1066 "failed to delete local key '%s': %s\n",
1067 op->global->open_global_id,
1068 hex_encode_talloc(local_rec, key.dptr,
1070 nt_errstr(status)));
1073 table->local.num_opens -= 1;
1075 if (op->db_rec == NULL) {
1076 TALLOC_FREE(local_rec);
1081 op->compat->op = NULL;
1082 file_free(NULL, op->compat);
1089 NTSTATUS smb1srv_open_table_init(struct smbXsrv_connection *conn)
1094 * Allow a range from 1..65534.
1096 * With real_max_open_files possible ids,
1097 * truncated to the SMB1 limit of 16-bit.
1099 * 0 and 0xFFFF are no valid ids.
1101 max_opens = conn->sconn->real_max_open_files;
1102 max_opens = MIN(max_opens, UINT16_MAX - 1);
1104 return smbXsrv_open_table_init(conn, 1, UINT16_MAX - 1, max_opens);
1107 NTSTATUS smb1srv_open_lookup(struct smbXsrv_connection *conn,
1108 uint16_t fnum, NTTIME now,
1109 struct smbXsrv_open **_open)
1111 struct smbXsrv_open_table *table = conn->open_table;
1112 uint32_t local_id = fnum;
1113 uint32_t global_id = 0;
1115 return smbXsrv_open_local_lookup(table, local_id, global_id, now, _open);
1118 NTSTATUS smb2srv_open_table_init(struct smbXsrv_connection *conn)
1123 * Allow a range from 1..4294967294.
1125 * With real_max_open_files possible ids,
1126 * truncated to 16-bit (the same as SMB1 for now).
1128 * 0 and 0xFFFFFFFF are no valid ids.
1130 * The usage of conn->sconn->real_max_open_files
1131 * is the reason that we use one open table per
1132 * transport connection (as we still have a 1:1 mapping
1133 * between process and transport connection).
1135 max_opens = conn->sconn->real_max_open_files;
1136 max_opens = MIN(max_opens, UINT16_MAX - 1);
1138 return smbXsrv_open_table_init(conn, 1, UINT32_MAX - 1, max_opens);
1141 NTSTATUS smb2srv_open_lookup(struct smbXsrv_connection *conn,
1142 uint64_t persistent_id,
1143 uint64_t volatile_id,
1145 struct smbXsrv_open **_open)
1147 struct smbXsrv_open_table *table = conn->open_table;
1148 uint32_t local_id = volatile_id & UINT32_MAX;
1149 uint64_t local_zeros = volatile_id & 0xFFFFFFFF00000000LLU;
1150 uint32_t global_id = persistent_id & UINT32_MAX;
1151 uint64_t global_zeros = persistent_id & 0xFFFFFFFF00000000LLU;
1153 if (local_zeros != 0) {
1154 return NT_STATUS_FILE_CLOSED;
1157 if (global_zeros != 0) {
1158 return NT_STATUS_FILE_CLOSED;
1161 if (global_id == 0) {
1162 return NT_STATUS_FILE_CLOSED;
1165 return smbXsrv_open_local_lookup(table, local_id, global_id, now, _open);
1168 NTSTATUS smb2srv_open_recreate(struct smbXsrv_connection *conn,
1169 struct auth_session_info *session_info,
1170 uint64_t persistent_id,
1171 const struct GUID *create_guid,
1173 struct smbXsrv_open **_open)
1175 struct smbXsrv_open_table *table = conn->open_table;
1176 struct db_record *local_rec = NULL;
1177 struct smbXsrv_open *op = NULL;
1180 uint32_t global_id = persistent_id & UINT32_MAX;
1181 uint64_t global_zeros = persistent_id & 0xFFFFFFFF00000000LLU;
1183 struct security_token *current_token = NULL;
1185 if (session_info == NULL) {
1186 return NT_STATUS_INVALID_HANDLE;
1188 current_token = session_info->security_token;
1190 if (current_token == NULL) {
1191 return NT_STATUS_INVALID_HANDLE;
1194 if (global_zeros != 0) {
1195 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1198 op = talloc_zero(table, struct smbXsrv_open);
1200 return NT_STATUS_NO_MEMORY;
1204 status = smbXsrv_open_global_lookup(table, global_id, op, &op->global);
1205 if (!NT_STATUS_IS_OK(status)) {
1211 * If the provided create_guid is NULL, this means that
1212 * the reconnect request was a v1 request. In that case
1213 * we should skipt the create GUID verification, since
1214 * it is valid to v1-reconnect a v2-opened handle.
1216 if ((create_guid != NULL) &&
1217 !GUID_equal(&op->global->create_guid, create_guid))
1220 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1223 if (!security_token_is_sid(current_token, &op->global->open_owner)) {
1225 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1228 if (!op->global->durable) {
1230 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1233 if (table->local.num_opens >= table->local.max_opens) {
1235 return NT_STATUS_INSUFFICIENT_RESOURCES;
1238 status = smbXsrv_open_local_allocate_id(table->local.db_ctx,
1239 table->local.lowest_id,
1240 table->local.highest_id,
1244 if (!NT_STATUS_IS_OK(status)) {
1249 op->idle_time = now;
1250 op->status = NT_STATUS_FILE_CLOSED;
1252 op->global->open_volatile_id = op->local_id;
1253 op->global->server_id = messaging_server_id(conn->msg_ctx);
1256 val = make_tdb_data((uint8_t const *)&ptr, sizeof(ptr));
1257 status = dbwrap_record_store(local_rec, val, TDB_REPLACE);
1258 TALLOC_FREE(local_rec);
1259 if (!NT_STATUS_IS_OK(status)) {
1263 table->local.num_opens += 1;
1265 talloc_set_destructor(op, smbXsrv_open_destructor);
1267 status = smbXsrv_open_global_store(op->global);
1268 if (!NT_STATUS_IS_OK(status)) {
1273 if (CHECK_DEBUGLVL(10)) {
1274 struct smbXsrv_openB open_blob;
1276 ZERO_STRUCT(open_blob);
1277 open_blob.version = 0;
1278 open_blob.info.info0 = op;
1280 DEBUG(10,("smbXsrv_open_recreate: global_id (0x%08x) stored\n",
1281 op->global->open_global_id));
1282 NDR_PRINT_DEBUG(smbXsrv_openB, &open_blob);
1286 return NT_STATUS_OK;
1290 static NTSTATUS smbXsrv_open_global_parse_record(TALLOC_CTX *mem_ctx,
1291 struct db_record *rec,
1292 struct smbXsrv_open_global0 **global)
1294 TDB_DATA key = dbwrap_record_get_key(rec);
1295 TDB_DATA val = dbwrap_record_get_value(rec);
1296 DATA_BLOB blob = data_blob_const(val.dptr, val.dsize);
1297 struct smbXsrv_open_globalB global_blob;
1298 enum ndr_err_code ndr_err;
1300 TALLOC_CTX *frame = talloc_stackframe();
1302 ndr_err = ndr_pull_struct_blob(&blob, frame, &global_blob,
1303 (ndr_pull_flags_fn_t)ndr_pull_smbXsrv_open_globalB);
1304 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1305 DEBUG(1,("Invalid record in smbXsrv_open_global.tdb:"
1306 "key '%s' ndr_pull_struct_blob - %s\n",
1307 hex_encode_talloc(frame, key.dptr, key.dsize),
1308 ndr_errstr(ndr_err)));
1309 status = ndr_map_error2ntstatus(ndr_err);
1313 if (global_blob.version != SMBXSRV_VERSION_0) {
1314 status = NT_STATUS_INTERNAL_DB_CORRUPTION;
1315 DEBUG(1,("Invalid record in smbXsrv_open_global.tdb:"
1316 "key '%s' unsuported version - %d - %s\n",
1317 hex_encode_talloc(frame, key.dptr, key.dsize),
1318 (int)global_blob.version,
1319 nt_errstr(status)));
1323 *global = talloc_move(mem_ctx, &global_blob.info.info0);
1324 status = NT_STATUS_OK;
1330 struct smbXsrv_open_global_traverse_state {
1331 int (*fn)(struct smbXsrv_open_global0 *, void *);
1335 static int smbXsrv_open_global_traverse_fn(struct db_record *rec, void *data)
1337 struct smbXsrv_open_global_traverse_state *state =
1338 (struct smbXsrv_open_global_traverse_state*)data;
1339 struct smbXsrv_open_global0 *global = NULL;
1343 status = smbXsrv_open_global_parse_record(talloc_tos(), rec, &global);
1344 if (!NT_STATUS_IS_OK(status)) {
1348 global->db_rec = rec;
1349 ret = state->fn(global, state->private_data);
1350 talloc_free(global);
1354 NTSTATUS smbXsrv_open_global_traverse(
1355 int (*fn)(struct smbXsrv_open_global0 *, void *),
1361 struct smbXsrv_open_global_traverse_state state = {
1363 .private_data = private_data,
1367 status = smbXsrv_open_global_init();
1368 if (!NT_STATUS_IS_OK(status)) {
1370 DEBUG(0, ("Failed to initialize open_global: %s\n",
1371 nt_errstr(status)));
1375 status = dbwrap_traverse_read(smbXsrv_open_global_db_ctx,
1376 smbXsrv_open_global_traverse_fn,
1384 NTSTATUS smbXsrv_open_cleanup(uint64_t persistent_id)
1387 TALLOC_CTX *frame = talloc_stackframe();
1388 struct smbXsrv_open_global0 *op = NULL;
1389 uint8_t key_buf[SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE];
1392 struct db_record *rec;
1393 bool delete_open = false;
1394 uint32_t global_id = persistent_id & UINT32_MAX;
1396 key = smbXsrv_open_global_id_to_key(global_id, key_buf);
1397 rec = dbwrap_fetch_locked(smbXsrv_open_global_db_ctx, frame, key);
1399 status = NT_STATUS_NOT_FOUND;
1400 DEBUG(1, ("smbXsrv_open_cleanup[global: 0x%08x] "
1401 "failed to fetch record from %s - %s\n",
1402 global_id, dbwrap_name(smbXsrv_open_global_db_ctx),
1403 nt_errstr(status)));
1407 val = dbwrap_record_get_value(rec);
1408 if (val.dsize == 0) {
1409 DEBUG(10, ("smbXsrv_open_cleanup[global: 0x%08x] "
1410 "empty record in %s, skipping...\n",
1411 global_id, dbwrap_name(smbXsrv_open_global_db_ctx)));
1415 status = smbXsrv_open_global_parse_record(talloc_tos(), rec, &op);
1416 if (!NT_STATUS_IS_OK(status)) {
1417 DEBUG(1, ("smbXsrv_open_cleanup[global: 0x%08x] "
1418 "failed to read record: %s\n",
1419 global_id, nt_errstr(status)));
1423 if (server_id_is_disconnected(&op->server_id)) {
1424 struct timeval now, disconnect_time;
1426 now = timeval_current();
1427 nttime_to_timeval(&disconnect_time, op->disconnect_time);
1428 tdiff = usec_time_diff(&now, &disconnect_time);
1429 delete_open = (tdiff >= 1000*op->durable_timeout_msec);
1431 DEBUG(10, ("smbXsrv_open_cleanup[global: 0x%08x] "
1432 "disconnected at [%s] %us ago with "
1433 "timeout of %us -%s reached\n",
1435 nt_time_string(frame, op->disconnect_time),
1436 (unsigned)(tdiff/1000000),
1437 op->durable_timeout_msec / 1000,
1438 delete_open ? "" : " not"));
1439 } else if (!serverid_exists(&op->server_id)) {
1440 DEBUG(10, ("smbXsrv_open_cleanup[global: 0x%08x] "
1441 "server[%s] does not exist\n",
1442 global_id, server_id_str(frame, &op->server_id)));
1450 status = dbwrap_record_delete(rec);
1451 if (!NT_STATUS_IS_OK(status)) {
1452 DEBUG(1, ("smbXsrv_open_cleanup[global: 0x%08x] "
1453 "failed to delete record"
1454 "from %s: %s\n", global_id,
1455 dbwrap_name(smbXsrv_open_global_db_ctx),
1456 nt_errstr(status)));
1460 DEBUG(10, ("smbXsrv_open_cleanup[global: 0x%08x] "
1461 "delete record from %s\n",
1463 dbwrap_name(smbXsrv_open_global_db_ctx)));