Line data Source code
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 "smbXsrv_open.h"
22 : #include "includes.h"
23 : #include "system/filesys.h"
24 : #include "lib/util/server_id.h"
25 : #include "smbd/smbd.h"
26 : #include "smbd/globals.h"
27 : #include "dbwrap/dbwrap.h"
28 : #include "dbwrap/dbwrap_rbt.h"
29 : #include "dbwrap/dbwrap_open.h"
30 : #include "../libcli/security/security.h"
31 : #include "messages.h"
32 : #include "lib/util/util_tdb.h"
33 : #include "librpc/gen_ndr/ndr_smbXsrv.h"
34 : #include "serverid.h"
35 : #include "source3/include/util_tdb.h"
36 : #include "lib/util/idtree_random.h"
37 : #include "lib/util/time_basic.h"
38 :
39 : struct smbXsrv_open_table {
40 : struct {
41 : struct idr_context *idr;
42 : struct db_context *replay_cache_db_ctx;
43 : uint32_t lowest_id;
44 : uint32_t highest_id;
45 : uint32_t max_opens;
46 : uint32_t num_opens;
47 : } local;
48 : struct {
49 : struct db_context *db_ctx;
50 : } global;
51 : };
52 :
53 : static struct db_context *smbXsrv_open_global_db_ctx = NULL;
54 :
55 31217 : NTSTATUS smbXsrv_open_global_init(void)
56 : {
57 31217 : char *global_path = NULL;
58 31217 : struct db_context *db_ctx = NULL;
59 :
60 31217 : if (smbXsrv_open_global_db_ctx != NULL) {
61 31217 : return NT_STATUS_OK;
62 : }
63 :
64 0 : global_path = lock_path(talloc_tos(), "smbXsrv_open_global.tdb");
65 0 : if (global_path == NULL) {
66 0 : return NT_STATUS_NO_MEMORY;
67 : }
68 :
69 0 : db_ctx = db_open(NULL, global_path,
70 : SMBD_VOLATILE_TDB_HASH_SIZE,
71 : SMBD_VOLATILE_TDB_FLAGS,
72 : O_RDWR | O_CREAT, 0600,
73 : DBWRAP_LOCK_ORDER_1,
74 : DBWRAP_FLAG_NONE);
75 0 : TALLOC_FREE(global_path);
76 0 : if (db_ctx == NULL) {
77 0 : NTSTATUS status = map_nt_error_from_unix_common(errno);
78 0 : return status;
79 : }
80 :
81 0 : smbXsrv_open_global_db_ctx = db_ctx;
82 :
83 0 : 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 : struct smbXsrv_open_global_key_buf { uint8_t buf[sizeof(uint32_t)]; };
96 :
97 1136570 : static TDB_DATA smbXsrv_open_global_id_to_key(
98 : uint32_t id, struct smbXsrv_open_global_key_buf *key_buf)
99 : {
100 1136570 : RSIVAL(key_buf->buf, 0, id);
101 :
102 2268908 : return (TDB_DATA) {
103 1132338 : .dptr = key_buf->buf,
104 : .dsize = sizeof(key_buf->buf),
105 : };
106 : }
107 :
108 31217 : static NTSTATUS smbXsrv_open_table_init(struct smbXsrv_connection *conn,
109 : uint32_t lowest_id,
110 : uint32_t highest_id,
111 : uint32_t max_opens)
112 : {
113 31217 : struct smbXsrv_client *client = conn->client;
114 854 : struct smbXsrv_open_table *table;
115 854 : NTSTATUS status;
116 854 : uint64_t max_range;
117 :
118 31217 : if (lowest_id > highest_id) {
119 0 : return NT_STATUS_INTERNAL_ERROR;
120 : }
121 :
122 31217 : max_range = highest_id;
123 31217 : max_range -= lowest_id;
124 31217 : max_range += 1;
125 :
126 31217 : if (max_opens > max_range) {
127 0 : return NT_STATUS_INTERNAL_ERROR;
128 : }
129 :
130 31217 : table = talloc_zero(client, struct smbXsrv_open_table);
131 31217 : if (table == NULL) {
132 0 : return NT_STATUS_NO_MEMORY;
133 : }
134 :
135 31217 : table->local.idr = idr_init(table);
136 31217 : if (table->local.idr == NULL) {
137 0 : TALLOC_FREE(table);
138 0 : return NT_STATUS_NO_MEMORY;
139 : }
140 31217 : table->local.replay_cache_db_ctx = db_open_rbt(table);
141 31217 : if (table->local.replay_cache_db_ctx == NULL) {
142 0 : TALLOC_FREE(table);
143 0 : return NT_STATUS_NO_MEMORY;
144 : }
145 31217 : table->local.lowest_id = lowest_id;
146 31217 : table->local.highest_id = highest_id;
147 31217 : table->local.max_opens = max_opens;
148 :
149 31217 : status = smbXsrv_open_global_init();
150 31217 : if (!NT_STATUS_IS_OK(status)) {
151 0 : TALLOC_FREE(table);
152 0 : return status;
153 : }
154 :
155 31217 : table->global.db_ctx = smbXsrv_open_global_db_ctx;
156 :
157 31217 : client->open_table = table;
158 31217 : return NT_STATUS_OK;
159 : }
160 :
161 1040902 : static NTSTATUS smbXsrv_open_local_lookup(struct smbXsrv_open_table *table,
162 : uint32_t open_local_id,
163 : uint32_t open_global_id,
164 : NTTIME now,
165 : struct smbXsrv_open **_open)
166 : {
167 1040902 : struct smbXsrv_open *op = NULL;
168 :
169 1040902 : *_open = NULL;
170 :
171 1040902 : if (open_local_id == 0) {
172 17 : return NT_STATUS_FILE_CLOSED;
173 : }
174 :
175 1040885 : if (table == NULL) {
176 : /* this might happen before the end of negprot */
177 0 : return NT_STATUS_FILE_CLOSED;
178 : }
179 :
180 1040885 : if (table->local.idr == NULL) {
181 0 : return NT_STATUS_INTERNAL_ERROR;
182 : }
183 :
184 1040885 : op = idr_find(table->local.idr, open_local_id);
185 1040885 : if (op == NULL) {
186 3467 : return NT_STATUS_FILE_CLOSED;
187 : }
188 :
189 1037418 : if (open_global_id == 0) {
190 : /* make the global check a no-op for SMB1 */
191 209211 : open_global_id = op->global->open_global_id;
192 : }
193 :
194 1037418 : if (op->global->open_global_id != open_global_id) {
195 4 : return NT_STATUS_FILE_CLOSED;
196 : }
197 :
198 1037414 : if (now != 0) {
199 1037414 : op->idle_time = now;
200 : }
201 :
202 1037414 : *_open = op;
203 1037414 : return NT_STATUS_OK;
204 : }
205 :
206 226 : static NTSTATUS smbXsrv_open_global_parse_record(
207 : TALLOC_CTX *mem_ctx,
208 : TDB_DATA key,
209 : TDB_DATA val,
210 : struct smbXsrv_open_global0 **global)
211 : {
212 226 : DATA_BLOB blob = data_blob_const(val.dptr, val.dsize);
213 0 : struct smbXsrv_open_globalB global_blob;
214 0 : enum ndr_err_code ndr_err;
215 0 : NTSTATUS status;
216 226 : TALLOC_CTX *frame = talloc_stackframe();
217 :
218 226 : ndr_err = ndr_pull_struct_blob(&blob, frame, &global_blob,
219 : (ndr_pull_flags_fn_t)ndr_pull_smbXsrv_open_globalB);
220 226 : if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
221 0 : DEBUG(1,("Invalid record in smbXsrv_open_global.tdb:"
222 : "key '%s' ndr_pull_struct_blob - %s\n",
223 : tdb_data_dbg(key),
224 : ndr_errstr(ndr_err)));
225 0 : status = ndr_map_error2ntstatus(ndr_err);
226 0 : goto done;
227 : }
228 :
229 226 : DBG_DEBUG("\n");
230 226 : if (CHECK_DEBUGLVL(10)) {
231 0 : NDR_PRINT_DEBUG(smbXsrv_open_globalB, &global_blob);
232 : }
233 :
234 226 : if (global_blob.version != SMBXSRV_VERSION_0) {
235 0 : status = NT_STATUS_INTERNAL_DB_CORRUPTION;
236 0 : DEBUG(1,("Invalid record in smbXsrv_open_global.tdb:"
237 : "key '%s' unsupported version - %d - %s\n",
238 : tdb_data_dbg(key),
239 : (int)global_blob.version,
240 : nt_errstr(status)));
241 0 : goto done;
242 : }
243 :
244 226 : if (global_blob.info.info0 == NULL) {
245 0 : status = NT_STATUS_INTERNAL_DB_CORRUPTION;
246 0 : DEBUG(1,("Invalid record in smbXsrv_open_global.tdb:"
247 : "key '%s' info0 NULL pointer - %s\n",
248 : tdb_data_dbg(key),
249 : nt_errstr(status)));
250 0 : goto done;
251 : }
252 :
253 226 : *global = talloc_move(mem_ctx, &global_blob.info.info0);
254 226 : status = NT_STATUS_OK;
255 226 : done:
256 226 : talloc_free(frame);
257 226 : return status;
258 : }
259 :
260 567565 : static NTSTATUS smbXsrv_open_global_verify_record(
261 : TDB_DATA key,
262 : TDB_DATA val,
263 : TALLOC_CTX *mem_ctx,
264 : struct smbXsrv_open_global0 **_global0)
265 : {
266 567565 : struct smbXsrv_open_global0 *global0 = NULL;
267 2116 : struct server_id_buf buf;
268 2116 : NTSTATUS status;
269 :
270 567565 : if (val.dsize == 0) {
271 567371 : return NT_STATUS_NOT_FOUND;
272 : }
273 :
274 194 : status = smbXsrv_open_global_parse_record(mem_ctx, key, val, &global0);
275 194 : if (!NT_STATUS_IS_OK(status)) {
276 0 : DBG_WARNING("smbXsrv_open_global_parse_record for %s failed: "
277 : "%s\n",
278 : tdb_data_dbg(key),
279 : nt_errstr(status));
280 0 : return status;
281 : }
282 194 : *_global0 = global0;
283 :
284 194 : if (server_id_is_disconnected(&global0->server_id)) {
285 181 : return NT_STATUS_OK;
286 : }
287 13 : if (serverid_exists(&global0->server_id)) {
288 13 : return NT_STATUS_OK;
289 : }
290 :
291 0 : DBG_WARNING("smbd %s did not clean up record %s\n",
292 : server_id_str_buf(global0->server_id, &buf),
293 : tdb_data_dbg(key));
294 :
295 0 : return NT_STATUS_FATAL_APP_EXIT;
296 : }
297 :
298 568893 : static NTSTATUS smbXsrv_open_global_store(
299 : struct db_record *rec,
300 : TDB_DATA key,
301 : TDB_DATA oldval,
302 : struct smbXsrv_open_global0 *global)
303 : {
304 2116 : struct smbXsrv_open_globalB global_blob;
305 568893 : DATA_BLOB blob = data_blob_null;
306 568893 : TDB_DATA val = { .dptr = NULL, };
307 2116 : NTSTATUS status;
308 2116 : enum ndr_err_code ndr_err;
309 :
310 : /*
311 : * TODO: if we use other versions than '0'
312 : * we would add glue code here, that would be able to
313 : * store the information in the old format.
314 : */
315 :
316 571009 : global_blob = (struct smbXsrv_open_globalB) {
317 568893 : .version = smbXsrv_version_global_current(),
318 : };
319 :
320 568893 : if (oldval.dsize >= 8) {
321 1528 : global_blob.seqnum = IVAL(oldval.dptr, 4);
322 : }
323 568893 : global_blob.seqnum += 1;
324 568893 : global_blob.info.info0 = global;
325 :
326 568893 : ndr_err = ndr_push_struct_blob(&blob, talloc_tos(), &global_blob,
327 : (ndr_push_flags_fn_t)ndr_push_smbXsrv_open_globalB);
328 568893 : if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
329 0 : DBG_WARNING("key '%s' ndr_push - %s\n",
330 : tdb_data_dbg(key),
331 : ndr_map_error2string(ndr_err));
332 0 : return ndr_map_error2ntstatus(ndr_err);
333 : }
334 :
335 568893 : val = make_tdb_data(blob.data, blob.length);
336 568893 : status = dbwrap_record_store(rec, val, TDB_REPLACE);
337 568893 : TALLOC_FREE(blob.data);
338 568893 : if (!NT_STATUS_IS_OK(status)) {
339 0 : DBG_WARNING("key '%s' store - %s\n",
340 : tdb_data_dbg(key),
341 : nt_errstr(status));
342 0 : return status;
343 : }
344 :
345 568893 : if (CHECK_DEBUGLVL(10)) {
346 0 : DBG_DEBUG("key '%s' stored\n", tdb_data_dbg(key));
347 0 : NDR_PRINT_DEBUG(smbXsrv_open_globalB, &global_blob);
348 : }
349 :
350 568893 : return NT_STATUS_OK;
351 : }
352 :
353 : struct smbXsrv_open_global_allocate_state {
354 : uint32_t id;
355 : struct smbXsrv_open_global0 *global;
356 : NTSTATUS status;
357 : };
358 :
359 567357 : static void smbXsrv_open_global_allocate_fn(
360 : struct db_record *rec, TDB_DATA oldval, void *private_data)
361 : {
362 567357 : struct smbXsrv_open_global_allocate_state *state = private_data;
363 567357 : struct smbXsrv_open_global0 *global = state->global;
364 567357 : struct smbXsrv_open_global0 *tmp_global0 = NULL;
365 567357 : TDB_DATA key = dbwrap_record_get_key(rec);
366 :
367 567357 : state->status = smbXsrv_open_global_verify_record(
368 : key, oldval, talloc_tos(), &tmp_global0);
369 :
370 567357 : if (NT_STATUS_IS_OK(state->status)) {
371 : /*
372 : * Found an existing record
373 : */
374 0 : TALLOC_FREE(tmp_global0);
375 0 : state->status = NT_STATUS_RETRY;
376 0 : return;
377 : }
378 :
379 567357 : if (NT_STATUS_EQUAL(state->status, NT_STATUS_NOT_FOUND)) {
380 : /*
381 : * Found an empty slot
382 : */
383 567357 : global->open_global_id = state->id;
384 567357 : global->open_persistent_id = state->id;
385 :
386 567357 : state->status = smbXsrv_open_global_store(
387 567357 : rec, key, (TDB_DATA) { .dsize = 0, }, state->global);
388 567357 : if (!NT_STATUS_IS_OK(state->status)) {
389 0 : DBG_WARNING("smbXsrv_open_global_store() for "
390 : "id %"PRIu32" failed: %s\n",
391 : state->id,
392 : nt_errstr(state->status));
393 : }
394 567357 : return;
395 : }
396 :
397 0 : if (NT_STATUS_EQUAL(state->status, NT_STATUS_FATAL_APP_EXIT)) {
398 0 : NTSTATUS status;
399 :
400 0 : TALLOC_FREE(tmp_global0);
401 :
402 : /*
403 : * smbd crashed
404 : */
405 0 : status = dbwrap_record_delete(rec);
406 0 : if (!NT_STATUS_IS_OK(status)) {
407 0 : DBG_WARNING("dbwrap_record_delete() failed "
408 : "for record %"PRIu32": %s\n",
409 : state->id,
410 : nt_errstr(status));
411 0 : state->status = NT_STATUS_INTERNAL_DB_CORRUPTION;
412 0 : return;
413 : }
414 0 : return;
415 : }
416 : }
417 :
418 567357 : static NTSTATUS smbXsrv_open_global_allocate(
419 : struct db_context *db, struct smbXsrv_open_global0 *global)
420 : {
421 567357 : struct smbXsrv_open_global_allocate_state state = {
422 : .global = global,
423 : };
424 2116 : uint32_t i;
425 567357 : uint32_t last_free = 0;
426 567357 : const uint32_t min_tries = 3;
427 :
428 : /*
429 : * Here we just randomly try the whole 32-bit space
430 : *
431 : * We use just 32-bit, because we want to reuse the
432 : * ID for SRVSVC.
433 : */
434 567357 : for (i = 0; i < UINT32_MAX; i++) {
435 2116 : struct smbXsrv_open_global_key_buf key_buf;
436 2116 : TDB_DATA key;
437 2116 : NTSTATUS status;
438 :
439 567357 : if (i >= min_tries && last_free != 0) {
440 0 : state.id = last_free;
441 : } else {
442 567357 : generate_nonce_buffer(
443 : (uint8_t *)&state.id, sizeof(state.id));
444 567357 : state.id = MAX(state.id, 1);
445 567357 : state.id = MIN(state.id, UINT32_MAX-1);
446 : }
447 :
448 567357 : key = smbXsrv_open_global_id_to_key(state.id, &key_buf);
449 :
450 567357 : status = dbwrap_do_locked(
451 : db, key, smbXsrv_open_global_allocate_fn, &state);
452 :
453 567357 : if (!NT_STATUS_IS_OK(status)) {
454 0 : DBG_WARNING("dbwrap_do_locked() failed: %s\n",
455 : nt_errstr(status));
456 0 : return NT_STATUS_INTERNAL_DB_ERROR;
457 : }
458 :
459 567357 : if (NT_STATUS_IS_OK(state.status)) {
460 : /*
461 : * Found an empty slot, done.
462 : */
463 567357 : DBG_DEBUG("Found slot %"PRIu32"\n", state.id);
464 567357 : return NT_STATUS_OK;
465 : }
466 :
467 0 : if (NT_STATUS_EQUAL(state.status, NT_STATUS_FATAL_APP_EXIT)) {
468 :
469 0 : if ((i < min_tries) && (last_free == 0)) {
470 : /*
471 : * Remember "id" as free but also try
472 : * others to not recycle ids too
473 : * quickly.
474 : */
475 0 : last_free = state.id;
476 : }
477 0 : continue;
478 : }
479 :
480 0 : if (NT_STATUS_EQUAL(state.status, NT_STATUS_RETRY)) {
481 : /*
482 : * Normal collision, try next
483 : */
484 0 : DBG_DEBUG("Found record for id %"PRIu32"\n",
485 : state.id);
486 0 : continue;
487 : }
488 :
489 0 : DBG_WARNING("smbXsrv_open_global_allocate_fn() failed: %s\n",
490 : nt_errstr(state.status));
491 0 : return state.status;
492 : }
493 :
494 : /* should not be reached */
495 0 : return NT_STATUS_INTERNAL_ERROR;
496 : }
497 :
498 567499 : static int smbXsrv_open_destructor(struct smbXsrv_open *op)
499 : {
500 2116 : NTSTATUS status;
501 :
502 567499 : status = smbXsrv_open_close(op, 0);
503 567499 : if (!NT_STATUS_IS_OK(status)) {
504 0 : DEBUG(0, ("smbXsrv_open_destructor: "
505 : "smbXsrv_open_close() failed - %s\n",
506 : nt_errstr(status)));
507 : }
508 :
509 567499 : TALLOC_FREE(op->global);
510 :
511 567499 : return 0;
512 : }
513 :
514 567359 : NTSTATUS smbXsrv_open_create(struct smbXsrv_connection *conn,
515 : struct auth_session_info *session_info,
516 : NTTIME now,
517 : struct smbXsrv_open **_open)
518 : {
519 567359 : struct smbXsrv_open_table *table = conn->client->open_table;
520 567359 : struct smbXsrv_open *op = NULL;
521 567359 : struct smbXsrv_open_global0 *global = NULL;
522 2116 : NTSTATUS status;
523 567359 : struct dom_sid *current_sid = NULL;
524 567359 : struct security_token *current_token = NULL;
525 2116 : int local_id;
526 :
527 567359 : if (session_info == NULL) {
528 0 : return NT_STATUS_INVALID_HANDLE;
529 : }
530 567359 : current_token = session_info->security_token;
531 :
532 567359 : if ((current_token == NULL) ||
533 567359 : (current_token->num_sids <= PRIMARY_USER_SID_INDEX)) {
534 0 : return NT_STATUS_INVALID_HANDLE;
535 : }
536 567359 : current_sid = ¤t_token->sids[PRIMARY_USER_SID_INDEX];
537 :
538 567359 : if (table->local.num_opens >= table->local.max_opens) {
539 2 : return NT_STATUS_INSUFFICIENT_RESOURCES;
540 : }
541 :
542 567357 : op = talloc_zero(table, struct smbXsrv_open);
543 567357 : if (op == NULL) {
544 0 : return NT_STATUS_NO_MEMORY;
545 : }
546 567357 : op->table = table;
547 567357 : op->status = NT_STATUS_OK; /* TODO: start with INTERNAL_ERROR */
548 567357 : op->idle_time = now;
549 :
550 567357 : global = talloc_zero(op, struct smbXsrv_open_global0);
551 567357 : if (global == NULL) {
552 0 : TALLOC_FREE(op);
553 0 : return NT_STATUS_NO_MEMORY;
554 : }
555 567357 : op->global = global;
556 :
557 : /*
558 : * We mark every slot as invalid using 0xFF.
559 : * Valid values are masked with 0xF.
560 : */
561 567357 : memset(global->lock_sequence_array, 0xFF,
562 : sizeof(global->lock_sequence_array));
563 :
564 569473 : local_id = idr_get_new_random(
565 : table->local.idr,
566 : op,
567 567357 : table->local.lowest_id,
568 567357 : table->local.highest_id);
569 567357 : if (local_id == -1) {
570 0 : TALLOC_FREE(op);
571 0 : return NT_STATUS_INSUFFICIENT_RESOURCES;
572 : }
573 567357 : op->local_id = local_id;
574 :
575 567357 : global->open_volatile_id = op->local_id;
576 :
577 567357 : global->server_id = messaging_server_id(conn->client->msg_ctx);
578 567357 : global->open_time = now;
579 567357 : global->open_owner = *current_sid;
580 567357 : if (conn->protocol >= PROTOCOL_SMB2_10) {
581 476060 : global->client_guid = conn->smb2.client.guid;
582 : }
583 :
584 567357 : status = smbXsrv_open_global_allocate(table->global.db_ctx,
585 : global);
586 567357 : if (!NT_STATUS_IS_OK(status)) {
587 0 : int ret = idr_remove(table->local.idr, local_id);
588 0 : SMB_ASSERT(ret == 0);
589 :
590 0 : DBG_WARNING("smbXsrv_open_global_allocate() failed: %s\n",
591 : nt_errstr(status));
592 0 : TALLOC_FREE(op);
593 0 : return status;
594 : }
595 :
596 567357 : table->local.num_opens += 1;
597 567357 : talloc_set_destructor(op, smbXsrv_open_destructor);
598 :
599 567357 : if (CHECK_DEBUGLVL(10)) {
600 0 : struct smbXsrv_openB open_blob = {
601 : .version = SMBXSRV_VERSION_0,
602 : .info.info0 = op,
603 : };
604 :
605 0 : DEBUG(10,("smbXsrv_open_create: global_id (0x%08x) stored\n",
606 : op->global->open_global_id));
607 0 : NDR_PRINT_DEBUG(smbXsrv_openB, &open_blob);
608 : }
609 :
610 567357 : *_open = op;
611 567357 : return NT_STATUS_OK;
612 : }
613 :
614 1190 : static NTSTATUS smbXsrv_open_set_replay_cache(struct smbXsrv_open *op)
615 : {
616 0 : struct GUID *create_guid;
617 0 : struct GUID_txt_buf buf;
618 0 : char *guid_string;
619 1190 : struct db_context *db = op->table->local.replay_cache_db_ctx;
620 1190 : struct smbXsrv_open_replay_cache rc = {
621 1190 : .idle_time = op->idle_time,
622 1190 : .local_id = op->local_id,
623 : };
624 1190 : uint8_t data[SMBXSRV_OPEN_REPLAY_CACHE_FIXED_SIZE] = { 0 };
625 1190 : DATA_BLOB blob = { .data = data, .length = sizeof(data), };
626 0 : enum ndr_err_code ndr_err;
627 0 : NTSTATUS status;
628 0 : TDB_DATA val;
629 :
630 1190 : if (!(op->flags & SMBXSRV_OPEN_NEED_REPLAY_CACHE)) {
631 452 : return NT_STATUS_OK;
632 : }
633 :
634 738 : if (op->flags & SMBXSRV_OPEN_HAVE_REPLAY_CACHE) {
635 0 : return NT_STATUS_OK;
636 : }
637 :
638 738 : create_guid = &op->global->create_guid;
639 738 : guid_string = GUID_buf_string(create_guid, &buf);
640 :
641 738 : ndr_err = ndr_push_struct_into_fixed_blob(&blob, &rc,
642 : (ndr_push_flags_fn_t)ndr_push_smbXsrv_open_replay_cache);
643 738 : if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
644 0 : status = ndr_map_error2ntstatus(ndr_err);
645 0 : return status;
646 : }
647 738 : val = make_tdb_data(blob.data, blob.length);
648 :
649 738 : status = dbwrap_store_bystring(db, guid_string, val, TDB_REPLACE);
650 :
651 738 : if (NT_STATUS_IS_OK(status)) {
652 738 : op->flags |= SMBXSRV_OPEN_HAVE_REPLAY_CACHE;
653 738 : op->flags &= ~SMBXSRV_OPEN_NEED_REPLAY_CACHE;
654 : }
655 :
656 738 : return status;
657 : }
658 :
659 78 : NTSTATUS smbXsrv_open_purge_replay_cache(struct smbXsrv_client *client,
660 : const struct GUID *create_guid)
661 : {
662 0 : struct GUID_txt_buf buf;
663 0 : NTSTATUS status;
664 :
665 78 : if (client->open_table == NULL) {
666 0 : return NT_STATUS_OK;
667 : }
668 :
669 78 : status = dbwrap_purge_bystring(
670 78 : client->open_table->local.replay_cache_db_ctx,
671 78 : GUID_buf_string(create_guid, &buf));
672 78 : return status;
673 : }
674 :
675 1395862 : static NTSTATUS smbXsrv_open_clear_replay_cache(struct smbXsrv_open *op)
676 : {
677 10208 : struct GUID *create_guid;
678 10208 : struct GUID_txt_buf buf;
679 10208 : struct db_context *db;
680 10208 : NTSTATUS status;
681 :
682 1395862 : if (op->table == NULL) {
683 160 : return NT_STATUS_OK;
684 : }
685 :
686 1395702 : db = op->table->local.replay_cache_db_ctx;
687 :
688 1395702 : if (!(op->flags & SMBXSRV_OPEN_HAVE_REPLAY_CACHE)) {
689 1394964 : return NT_STATUS_OK;
690 : }
691 :
692 738 : create_guid = &op->global->create_guid;
693 738 : if (GUID_all_zero(create_guid)) {
694 0 : return NT_STATUS_OK;
695 : }
696 :
697 738 : status = dbwrap_purge_bystring(db, GUID_buf_string(create_guid, &buf));
698 :
699 738 : if (NT_STATUS_IS_OK(status)) {
700 738 : op->flags &= ~SMBXSRV_OPEN_HAVE_REPLAY_CACHE;
701 : }
702 :
703 738 : return status;
704 : }
705 :
706 : struct smbXsrv_open_update_state {
707 : struct smbXsrv_open_global0 *global;
708 : NTSTATUS status;
709 : };
710 :
711 1190 : static void smbXsrv_open_update_fn(
712 : struct db_record *rec, TDB_DATA oldval, void *private_data)
713 : {
714 1190 : struct smbXsrv_open_update_state *state = private_data;
715 1190 : TDB_DATA key = dbwrap_record_get_key(rec);
716 :
717 1190 : state->status = smbXsrv_open_global_store(
718 : rec, key, oldval, state->global);
719 1190 : }
720 :
721 1190 : NTSTATUS smbXsrv_open_update(struct smbXsrv_open *op)
722 : {
723 1190 : struct smbXsrv_open_update_state state = { .global = op->global, };
724 1190 : struct smbXsrv_open_table *table = op->table;
725 0 : struct smbXsrv_open_global_key_buf key_buf;
726 1190 : TDB_DATA key = smbXsrv_open_global_id_to_key(
727 1190 : op->global->open_global_id, &key_buf);
728 0 : NTSTATUS status;
729 :
730 1190 : status = dbwrap_do_locked(
731 : table->global.db_ctx, key, smbXsrv_open_update_fn, &state);
732 1190 : if (!NT_STATUS_IS_OK(status)) {
733 0 : DBG_WARNING("global_id (0x%08x) dbwrap_do_locked failed: %s\n",
734 : op->global->open_global_id,
735 : nt_errstr(status));
736 0 : return NT_STATUS_INTERNAL_DB_ERROR;
737 : }
738 :
739 1190 : if (!NT_STATUS_IS_OK(state.status)) {
740 0 : DBG_WARNING("global_id (0x%08x) smbXsrv_open_global_store "
741 : "failed: %s\n",
742 : op->global->open_global_id,
743 : nt_errstr(state.status));
744 0 : return state.status;
745 : }
746 :
747 1190 : status = smbXsrv_open_set_replay_cache(op);
748 1190 : if (!NT_STATUS_IS_OK(status)) {
749 0 : DBG_ERR("smbXsrv_open_set_replay_cache failed: %s\n",
750 : nt_errstr(status));
751 0 : return status;
752 : }
753 :
754 1190 : if (CHECK_DEBUGLVL(10)) {
755 0 : struct smbXsrv_openB open_blob = {
756 : .version = SMBXSRV_VERSION_0,
757 : .info.info0 = op,
758 : };
759 :
760 0 : DEBUG(10,("smbXsrv_open_update: global_id (0x%08x) stored\n",
761 : op->global->open_global_id));
762 0 : NDR_PRINT_DEBUG(smbXsrv_openB, &open_blob);
763 : }
764 :
765 1190 : return NT_STATUS_OK;
766 : }
767 :
768 : struct smbXsrv_open_close_state {
769 : struct smbXsrv_open *op;
770 : NTSTATUS status;
771 : };
772 :
773 567499 : static void smbXsrv_open_close_fn(
774 : struct db_record *rec, TDB_DATA oldval, void *private_data)
775 : {
776 567499 : struct smbXsrv_open_close_state *state = private_data;
777 567499 : struct smbXsrv_open_global0 *global = state->op->global;
778 567499 : TDB_DATA key = dbwrap_record_get_key(rec);
779 :
780 567499 : if (global->durable) {
781 : /*
782 : * Durable open -- we need to update the global part
783 : * instead of deleting it
784 : */
785 188 : state->status = smbXsrv_open_global_store(
786 : rec, key, oldval, global);
787 188 : if (!NT_STATUS_IS_OK(state->status)) {
788 0 : DBG_WARNING("failed to store global key '%s': %s\n",
789 : tdb_data_dbg(key),
790 : nt_errstr(state->status));
791 188 : return;
792 : }
793 :
794 188 : if (CHECK_DEBUGLVL(10)) {
795 0 : struct smbXsrv_openB open_blob = {
796 : .version = SMBXSRV_VERSION_0,
797 0 : .info.info0 = state->op,
798 : };
799 :
800 0 : DBG_DEBUG("(0x%08x) stored disconnect\n",
801 : global->open_global_id);
802 0 : NDR_PRINT_DEBUG(smbXsrv_openB, &open_blob);
803 : }
804 188 : return;
805 : }
806 :
807 567311 : state->status = dbwrap_record_delete(rec);
808 567311 : if (!NT_STATUS_IS_OK(state->status)) {
809 0 : DBG_WARNING("failed to delete global key '%s': %s\n",
810 : tdb_data_dbg(key),
811 : nt_errstr(state->status));
812 : }
813 : }
814 :
815 567659 : NTSTATUS smbXsrv_open_close(struct smbXsrv_open *op, NTTIME now)
816 : {
817 567659 : struct smbXsrv_open_close_state state = { .op = op, };
818 567659 : struct smbXsrv_open_global0 *global = op->global;
819 2116 : struct smbXsrv_open_table *table;
820 2116 : NTSTATUS status;
821 567659 : NTSTATUS error = NT_STATUS_OK;
822 2116 : struct smbXsrv_open_global_key_buf key_buf;
823 567659 : TDB_DATA key = smbXsrv_open_global_id_to_key(
824 : global->open_global_id, &key_buf);
825 2116 : int ret;
826 :
827 567659 : error = smbXsrv_open_clear_replay_cache(op);
828 567659 : if (!NT_STATUS_IS_OK(error)) {
829 0 : DBG_ERR("smbXsrv_open_clear_replay_cache failed: %s\n",
830 : nt_errstr(error));
831 : }
832 :
833 567659 : if (op->table == NULL) {
834 160 : return error;
835 : }
836 :
837 567499 : table = op->table;
838 567499 : op->table = NULL;
839 :
840 567499 : op->status = NT_STATUS_FILE_CLOSED;
841 567499 : global->disconnect_time = now;
842 567499 : server_id_set_disconnected(&global->server_id);
843 :
844 567499 : status = dbwrap_do_locked(
845 : table->global.db_ctx, key, smbXsrv_open_close_fn, &state);
846 567499 : if (!NT_STATUS_IS_OK(status)) {
847 0 : DBG_WARNING("dbwrap_do_locked() for %s failed: %s\n",
848 : tdb_data_dbg(key),
849 : nt_errstr(status));
850 0 : error = status;
851 567499 : } else if (!NT_STATUS_IS_OK(state.status)) {
852 0 : DBG_WARNING("smbXsrv_open_close_fn() for %s failed: %s\n",
853 : tdb_data_dbg(key),
854 : nt_errstr(state.status));
855 0 : error = state.status;
856 : }
857 :
858 567499 : ret = idr_remove(table->local.idr, op->local_id);
859 567499 : SMB_ASSERT(ret == 0);
860 :
861 567499 : table->local.num_opens -= 1;
862 :
863 567499 : if (op->compat) {
864 0 : op->compat->op = NULL;
865 0 : file_free(NULL, op->compat);
866 0 : op->compat = NULL;
867 : }
868 :
869 567499 : return error;
870 : }
871 :
872 5779 : NTSTATUS smb1srv_open_table_init(struct smbXsrv_connection *conn)
873 : {
874 133 : uint32_t max_opens;
875 :
876 : /*
877 : * Allow a range from 1..65534.
878 : *
879 : * With real_max_open_files possible ids,
880 : * truncated to the SMB1 limit of 16-bit.
881 : *
882 : * 0 and 0xFFFF are no valid ids.
883 : */
884 5779 : max_opens = conn->client->sconn->real_max_open_files;
885 5779 : max_opens = MIN(max_opens, UINT16_MAX - 1);
886 :
887 5779 : return smbXsrv_open_table_init(conn, 1, UINT16_MAX - 1, max_opens);
888 : }
889 :
890 211884 : NTSTATUS smb1srv_open_lookup(struct smbXsrv_connection *conn,
891 : uint16_t fnum, NTTIME now,
892 : struct smbXsrv_open **_open)
893 : {
894 211884 : struct smbXsrv_open_table *table = conn->client->open_table;
895 211884 : uint32_t local_id = fnum;
896 211884 : uint32_t global_id = 0;
897 :
898 211884 : return smbXsrv_open_local_lookup(table, local_id, global_id, now, _open);
899 : }
900 :
901 25438 : NTSTATUS smb2srv_open_table_init(struct smbXsrv_connection *conn)
902 : {
903 721 : uint32_t max_opens;
904 721 : uint32_t highest_id;
905 :
906 : /*
907 : * Allow a range from 1..4294967294.
908 : *
909 : * With real_max_open_files possible ids,
910 : * truncated to 16-bit (the same as SMB1 for now).
911 : *
912 : * 0 and 0xFFFFFFFF are no valid ids.
913 : *
914 : * The usage of conn->sconn->real_max_open_files
915 : * is the reason that we use one open table per
916 : * transport connection (as we still have a 1:1 mapping
917 : * between process and transport connection).
918 : */
919 25438 : max_opens = conn->client->sconn->real_max_open_files;
920 25438 : max_opens = MIN(max_opens, UINT16_MAX - 1);
921 :
922 : /*
923 : * idtree uses "int" for local IDs. Limit the maximum ID to
924 : * what "int" can hold.
925 : */
926 25438 : highest_id = UINT32_MAX-1;
927 25438 : highest_id = MIN(highest_id, INT_MAX);
928 :
929 25438 : return smbXsrv_open_table_init(conn, 1, highest_id, max_opens);
930 : }
931 :
932 842488 : NTSTATUS smb2srv_open_lookup(struct smbXsrv_connection *conn,
933 : uint64_t persistent_id,
934 : uint64_t volatile_id,
935 : NTTIME now,
936 : struct smbXsrv_open **_open)
937 : {
938 842488 : struct smbXsrv_open_table *table = conn->client->open_table;
939 842488 : uint32_t local_id = volatile_id & UINT32_MAX;
940 842488 : uint64_t local_zeros = volatile_id & 0xFFFFFFFF00000000LLU;
941 842488 : uint32_t global_id = persistent_id & UINT32_MAX;
942 842488 : uint64_t global_zeros = persistent_id & 0xFFFFFFFF00000000LLU;
943 8092 : NTSTATUS status;
944 :
945 842488 : if (local_zeros != 0) {
946 11491 : return NT_STATUS_FILE_CLOSED;
947 : }
948 :
949 830997 : if (global_zeros != 0) {
950 0 : return NT_STATUS_FILE_CLOSED;
951 : }
952 :
953 830997 : if (global_id == 0) {
954 2053 : return NT_STATUS_FILE_CLOSED;
955 : }
956 :
957 828944 : status = smbXsrv_open_local_lookup(table, local_id, global_id, now,
958 : _open);
959 828944 : if (!NT_STATUS_IS_OK(status)) {
960 741 : return status;
961 : }
962 :
963 : /*
964 : * Clear the replay cache for this create_guid if it exists:
965 : * This is based on the assumption that this lookup will be
966 : * triggered by a client request using the file-id for lookup.
967 : * Hence the client has proven that it has in fact seen the
968 : * reply to its initial create call. So subsequent create replays
969 : * should be treated as invalid. Hence the index for create_guid
970 : * lookup needs to be removed.
971 : */
972 828203 : status = smbXsrv_open_clear_replay_cache(*_open);
973 :
974 828203 : return status;
975 : }
976 :
977 : /*
978 : * This checks or marks the replay cache, we have the following
979 : * cases:
980 : *
981 : * 1. There is no record in the cache
982 : * => we add the passes caller_req_guid as holder_req_guid
983 : * together with local_id as 0.
984 : * => We return STATUS_FWP_RESERVED in order to indicate
985 : * that the caller holds the current reservation
986 : *
987 : * 2. There is a record in the cache and holder_req_guid
988 : * is already the same as caller_req_guid and local_id is 0
989 : * => We return STATUS_FWP_RESERVED in order to indicate
990 : * that the caller holds the current reservation
991 : *
992 : * 3. There is a record in the cache with a holder_req_guid
993 : * other than caller_req_guid (and local_id is 0):
994 : * => We return NT_STATUS_FILE_NOT_AVAILABLE to indicate
995 : * the original request is still pending
996 : *
997 : * 4. There is a record in the cache with a zero holder_req_guid
998 : * and a valid local_id:
999 : * => We lookup the existing open by local_id
1000 : * => We return NT_STATUS_OK together with the smbXsrv_open
1001 : *
1002 : *
1003 : * With NT_STATUS_OK the caller can continue the replay processing.
1004 : *
1005 : * With STATUS_FWP_RESERVED the caller should continue the normal
1006 : * open processing:
1007 : * - On success:
1008 : * - smbXsrv_open_update()/smbXsrv_open_set_replay_cache()
1009 : * will convert the record to a zero holder_req_guid
1010 : * with a valid local_id.
1011 : * - On failure:
1012 : * - smbXsrv_open_purge_replay_cache() should cleanup
1013 : * the reservation.
1014 : *
1015 : * All other values should be returned to the client,
1016 : * while NT_STATUS_FILE_NOT_AVAILABLE will trigger the
1017 : * retry loop on the client.
1018 : */
1019 1116 : NTSTATUS smb2srv_open_lookup_replay_cache(struct smbXsrv_connection *conn,
1020 : struct GUID caller_req_guid,
1021 : struct GUID create_guid,
1022 : const char *name,
1023 : NTTIME now,
1024 : struct smbXsrv_open **_open)
1025 : {
1026 1116 : TALLOC_CTX *frame = talloc_stackframe();
1027 0 : NTSTATUS status;
1028 1116 : struct smbXsrv_open_table *table = conn->client->open_table;
1029 1116 : struct db_context *db = table->local.replay_cache_db_ctx;
1030 0 : struct GUID_txt_buf tmp_guid_buf;
1031 0 : struct GUID_txt_buf _create_guid_buf;
1032 1116 : const char *create_guid_str = GUID_buf_string(&create_guid, &_create_guid_buf);
1033 1116 : TDB_DATA create_guid_key = string_term_tdb_data(create_guid_str);
1034 1116 : struct db_record *db_rec = NULL;
1035 1116 : struct smbXsrv_open *op = NULL;
1036 1116 : struct smbXsrv_open_replay_cache rc = {
1037 : .holder_req_guid = caller_req_guid,
1038 : .idle_time = now,
1039 : .local_id = 0,
1040 : };
1041 0 : enum ndr_err_code ndr_err;
1042 1116 : DATA_BLOB blob = data_blob_null;
1043 0 : TDB_DATA val;
1044 :
1045 1116 : *_open = NULL;
1046 :
1047 1116 : db_rec = dbwrap_fetch_locked(db, frame, create_guid_key);
1048 1116 : if (db_rec == NULL) {
1049 0 : TALLOC_FREE(frame);
1050 0 : return NT_STATUS_INTERNAL_DB_ERROR;
1051 : }
1052 :
1053 1116 : val = dbwrap_record_get_value(db_rec);
1054 1116 : if (val.dsize == 0) {
1055 0 : uint8_t data[SMBXSRV_OPEN_REPLAY_CACHE_FIXED_SIZE];
1056 :
1057 816 : blob = data_blob_const(data, ARRAY_SIZE(data));
1058 816 : ndr_err = ndr_push_struct_into_fixed_blob(&blob, &rc,
1059 : (ndr_push_flags_fn_t)ndr_push_smbXsrv_open_replay_cache);
1060 816 : if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1061 0 : status = ndr_map_error2ntstatus(ndr_err);
1062 0 : TALLOC_FREE(frame);
1063 0 : return status;
1064 : }
1065 :
1066 816 : val = make_tdb_data(blob.data, blob.length);
1067 816 : status = dbwrap_record_store(db_rec, val, TDB_REPLACE);
1068 816 : if (!NT_STATUS_IS_OK(status)) {
1069 0 : TALLOC_FREE(frame);
1070 0 : return status;
1071 : }
1072 :
1073 : /*
1074 : * We're the new holder
1075 : */
1076 816 : *_open = NULL;
1077 816 : TALLOC_FREE(frame);
1078 816 : return NT_STATUS_FWP_RESERVED;
1079 : }
1080 :
1081 300 : if (val.dsize != SMBXSRV_OPEN_REPLAY_CACHE_FIXED_SIZE) {
1082 0 : TALLOC_FREE(frame);
1083 0 : return NT_STATUS_INTERNAL_DB_CORRUPTION;
1084 : }
1085 :
1086 300 : blob = data_blob_const(val.dptr, val.dsize);
1087 300 : ndr_err = ndr_pull_struct_blob_all_noalloc(&blob, &rc,
1088 : (ndr_pull_flags_fn_t)ndr_pull_smbXsrv_open_replay_cache);
1089 300 : if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1090 0 : status = ndr_map_error2ntstatus(ndr_err);
1091 0 : TALLOC_FREE(frame);
1092 0 : return status;
1093 : }
1094 300 : if (rc.local_id != 0) {
1095 74 : if (GUID_equal(&rc.holder_req_guid, &caller_req_guid)) {
1096 : /*
1097 : * This should not happen
1098 : */
1099 0 : status = NT_STATUS_INTERNAL_ERROR;
1100 0 : DBG_ERR("caller %s already holds local_id %u for create %s [%s] - %s\n",
1101 : GUID_buf_string(&caller_req_guid, &tmp_guid_buf),
1102 : (unsigned)rc.local_id,
1103 : create_guid_str,
1104 : name,
1105 : nt_errstr(status));
1106 :
1107 0 : TALLOC_FREE(frame);
1108 0 : return status;
1109 : }
1110 :
1111 74 : status = smbXsrv_open_local_lookup(table,
1112 : rc.local_id,
1113 : 0, /* global_id */
1114 : now,
1115 : &op);
1116 74 : if (!NT_STATUS_IS_OK(status)) {
1117 0 : DBG_ERR("holder %s stale for local_id %u for create %s [%s] - %s\n",
1118 : GUID_buf_string(&rc.holder_req_guid, &tmp_guid_buf),
1119 : (unsigned)rc.local_id,
1120 : create_guid_str,
1121 : name,
1122 : nt_errstr(status));
1123 :
1124 0 : TALLOC_FREE(frame);
1125 0 : return status;
1126 : }
1127 :
1128 : /*
1129 : * We found an open the caller can reuse.
1130 : */
1131 74 : SMB_ASSERT(op != NULL);
1132 74 : *_open = op;
1133 74 : TALLOC_FREE(frame);
1134 74 : return NT_STATUS_OK;
1135 : }
1136 :
1137 226 : if (GUID_equal(&rc.holder_req_guid, &caller_req_guid)) {
1138 : /*
1139 : * We're still the holder
1140 : */
1141 74 : *_open = NULL;
1142 74 : TALLOC_FREE(frame);
1143 74 : return NT_STATUS_FWP_RESERVED;
1144 : }
1145 :
1146 : /*
1147 : * The original request (or a former replay) is still
1148 : * pending, ask the client to retry by sending FILE_NOT_AVAILABLE.
1149 : */
1150 152 : status = NT_STATUS_FILE_NOT_AVAILABLE;
1151 152 : DBG_DEBUG("holder %s still pending for create %s [%s] - %s\n",
1152 : GUID_buf_string(&rc.holder_req_guid, &tmp_guid_buf),
1153 : create_guid_str,
1154 : name,
1155 : nt_errstr(status));
1156 152 : TALLOC_FREE(frame);
1157 152 : return status;
1158 : }
1159 :
1160 : struct smb2srv_open_recreate_state {
1161 : struct smbXsrv_open *op;
1162 : const struct GUID *create_guid;
1163 : struct security_token *current_token;
1164 : struct server_id me;
1165 :
1166 : NTSTATUS status;
1167 : };
1168 :
1169 208 : static void smb2srv_open_recreate_fn(
1170 : struct db_record *rec, TDB_DATA oldval, void *private_data)
1171 : {
1172 208 : struct smb2srv_open_recreate_state *state = private_data;
1173 208 : TDB_DATA key = dbwrap_record_get_key(rec);
1174 208 : struct smbXsrv_open_global0 *global = NULL;
1175 :
1176 208 : state->status = smbXsrv_open_global_verify_record(
1177 208 : key, oldval, state->op, &state->op->global);
1178 208 : if (!NT_STATUS_IS_OK(state->status)) {
1179 14 : DBG_WARNING("smbXsrv_open_global_verify_record for %s "
1180 : "failed: %s\n",
1181 : tdb_data_dbg(key),
1182 : nt_errstr(state->status));
1183 14 : goto not_found;
1184 : }
1185 194 : global = state->op->global;
1186 :
1187 : /*
1188 : * If the provided create_guid is NULL, this means that
1189 : * the reconnect request was a v1 request. In that case
1190 : * we should skip the create GUID verification, since
1191 : * it is valid to v1-reconnect a v2-opened handle.
1192 : */
1193 194 : if ((state->create_guid != NULL) &&
1194 90 : !GUID_equal(&global->create_guid, state->create_guid)) {
1195 0 : struct GUID_txt_buf buf1, buf2;
1196 36 : DBG_NOTICE("%s != %s in %s\n",
1197 : GUID_buf_string(&global->create_guid, &buf1),
1198 : GUID_buf_string(state->create_guid, &buf2),
1199 : tdb_data_dbg(key));
1200 36 : goto not_found;
1201 : }
1202 :
1203 158 : if (!security_token_is_sid(
1204 158 : state->current_token, &global->open_owner)) {
1205 0 : struct dom_sid_buf buf;
1206 0 : DBG_NOTICE("global owner %s not in our token in %s\n",
1207 : dom_sid_str_buf(&global->open_owner, &buf),
1208 : tdb_data_dbg(key));
1209 0 : goto not_found;
1210 : }
1211 :
1212 158 : if (!global->durable) {
1213 0 : DBG_NOTICE("%"PRIu64"/%"PRIu64" not durable in %s\n",
1214 : global->open_persistent_id,
1215 : global->open_volatile_id,
1216 : tdb_data_dbg(key));
1217 0 : goto not_found;
1218 : }
1219 :
1220 158 : global->open_volatile_id = state->op->local_id;
1221 158 : global->server_id = state->me;
1222 :
1223 158 : state->status = smbXsrv_open_global_store(rec, key, oldval, global);
1224 158 : if (!NT_STATUS_IS_OK(state->status)) {
1225 0 : DBG_WARNING("smbXsrv_open_global_store for %s failed: %s\n",
1226 : tdb_data_dbg(key),
1227 : nt_errstr(state->status));
1228 158 : return;
1229 : }
1230 158 : return;
1231 :
1232 50 : not_found:
1233 50 : state->status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
1234 : }
1235 :
1236 208 : NTSTATUS smb2srv_open_recreate(struct smbXsrv_connection *conn,
1237 : struct auth_session_info *session_info,
1238 : uint64_t persistent_id,
1239 : const struct GUID *create_guid,
1240 : NTTIME now,
1241 : struct smbXsrv_open **_open)
1242 : {
1243 208 : struct smbXsrv_open_table *table = conn->client->open_table;
1244 208 : struct smb2srv_open_recreate_state state = {
1245 : .create_guid = create_guid,
1246 208 : .me = messaging_server_id(conn->client->msg_ctx),
1247 : };
1248 0 : struct smbXsrv_open_global_key_buf key_buf;
1249 208 : TDB_DATA key = smbXsrv_open_global_id_to_key(
1250 : persistent_id & UINT32_MAX, &key_buf);
1251 0 : int ret, local_id;
1252 0 : NTSTATUS status;
1253 :
1254 208 : if (session_info == NULL) {
1255 0 : DEBUG(10, ("session_info=NULL\n"));
1256 0 : return NT_STATUS_INVALID_HANDLE;
1257 : }
1258 208 : state.current_token = session_info->security_token;
1259 :
1260 208 : if (state.current_token == NULL) {
1261 0 : DEBUG(10, ("current_token=NULL\n"));
1262 0 : return NT_STATUS_INVALID_HANDLE;
1263 : }
1264 :
1265 208 : if ((persistent_id & 0xFFFFFFFF00000000LLU) != 0) {
1266 : /*
1267 : * We only use 32 bit for the persistent ID
1268 : */
1269 0 : DBG_DEBUG("persistent_id=%"PRIx64"\n", persistent_id);
1270 0 : return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1271 : }
1272 :
1273 208 : if (table->local.num_opens >= table->local.max_opens) {
1274 0 : return NT_STATUS_INSUFFICIENT_RESOURCES;
1275 : }
1276 :
1277 208 : state.op = talloc_zero(table, struct smbXsrv_open);
1278 208 : if (state.op == NULL) {
1279 0 : return NT_STATUS_NO_MEMORY;
1280 : }
1281 208 : state.op->table = table;
1282 :
1283 208 : local_id = idr_get_new_random(
1284 : table->local.idr,
1285 208 : state.op,
1286 208 : table->local.lowest_id,
1287 208 : table->local.highest_id);
1288 208 : if (local_id == -1) {
1289 0 : TALLOC_FREE(state.op);
1290 0 : return NT_STATUS_INSUFFICIENT_RESOURCES;
1291 : }
1292 208 : state.op->local_id = local_id;
1293 208 : SMB_ASSERT(state.op->local_id == local_id); /* No coercion loss */
1294 :
1295 208 : table->local.num_opens += 1;
1296 :
1297 208 : state.op->idle_time = now;
1298 208 : state.op->status = NT_STATUS_FILE_CLOSED;
1299 :
1300 208 : status = dbwrap_do_locked(
1301 : table->global.db_ctx, key, smb2srv_open_recreate_fn, &state);
1302 208 : if (!NT_STATUS_IS_OK(status)) {
1303 0 : DBG_DEBUG("dbwrap_do_locked() for %s failed: %s\n",
1304 : tdb_data_dbg(key),
1305 : nt_errstr(status));
1306 0 : goto fail;
1307 : }
1308 :
1309 208 : if (!NT_STATUS_IS_OK(state.status)) {
1310 50 : status = state.status;
1311 50 : DBG_DEBUG("smb2srv_open_recreate_fn for %s failed: %s\n",
1312 : tdb_data_dbg(key),
1313 : nt_errstr(status));
1314 50 : goto fail;
1315 : }
1316 :
1317 158 : talloc_set_destructor(state.op, smbXsrv_open_destructor);
1318 :
1319 158 : if (CHECK_DEBUGLVL(10)) {
1320 0 : struct smbXsrv_openB open_blob = {
1321 0 : .info.info0 = state.op,
1322 : };
1323 0 : DBG_DEBUG("global_id (0x%08x) stored\n",
1324 : state.op->global->open_global_id);
1325 0 : NDR_PRINT_DEBUG(smbXsrv_openB, &open_blob);
1326 : }
1327 :
1328 158 : *_open = state.op;
1329 :
1330 158 : return NT_STATUS_OK;
1331 50 : fail:
1332 50 : table->local.num_opens -= 1;
1333 :
1334 50 : ret = idr_remove(table->local.idr, state.op->local_id);
1335 50 : SMB_ASSERT(ret == 0);
1336 50 : TALLOC_FREE(state.op);
1337 50 : return status;
1338 : }
1339 :
1340 : struct smbXsrv_open_global_traverse_state {
1341 : int (*fn)(struct db_record *rec, struct smbXsrv_open_global0 *, void *);
1342 : void *private_data;
1343 : };
1344 :
1345 0 : static int smbXsrv_open_global_traverse_fn(struct db_record *rec, void *data)
1346 : {
1347 0 : struct smbXsrv_open_global_traverse_state *state =
1348 : (struct smbXsrv_open_global_traverse_state*)data;
1349 0 : struct smbXsrv_open_global0 *global = NULL;
1350 0 : TDB_DATA key = dbwrap_record_get_key(rec);
1351 0 : TDB_DATA val = dbwrap_record_get_value(rec);
1352 0 : NTSTATUS status;
1353 0 : int ret = -1;
1354 :
1355 0 : status = smbXsrv_open_global_parse_record(
1356 : talloc_tos(), key, val, &global);
1357 0 : if (!NT_STATUS_IS_OK(status)) {
1358 0 : return -1;
1359 : }
1360 :
1361 0 : ret = state->fn(rec, global, state->private_data);
1362 0 : talloc_free(global);
1363 0 : return ret;
1364 : }
1365 :
1366 0 : NTSTATUS smbXsrv_open_global_traverse(
1367 : int (*fn)(struct db_record *rec, struct smbXsrv_open_global0 *, void *),
1368 : void *private_data)
1369 : {
1370 :
1371 0 : NTSTATUS status;
1372 0 : int count = 0;
1373 0 : struct smbXsrv_open_global_traverse_state state = {
1374 : .fn = fn,
1375 : .private_data = private_data,
1376 : };
1377 :
1378 0 : become_root();
1379 0 : status = smbXsrv_open_global_init();
1380 0 : if (!NT_STATUS_IS_OK(status)) {
1381 0 : unbecome_root();
1382 0 : DEBUG(0, ("Failed to initialize open_global: %s\n",
1383 : nt_errstr(status)));
1384 0 : return status;
1385 : }
1386 :
1387 0 : status = dbwrap_traverse_read(smbXsrv_open_global_db_ctx,
1388 : smbXsrv_open_global_traverse_fn,
1389 : &state,
1390 : &count);
1391 0 : unbecome_root();
1392 :
1393 0 : return status;
1394 : }
1395 :
1396 : struct smbXsrv_open_cleanup_state {
1397 : uint32_t global_id;
1398 : NTSTATUS status;
1399 : };
1400 :
1401 156 : static void smbXsrv_open_cleanup_fn(
1402 : struct db_record *rec, TDB_DATA oldval, void *private_data)
1403 : {
1404 156 : struct smbXsrv_open_cleanup_state *state = private_data;
1405 156 : struct smbXsrv_open_global0 *global = NULL;
1406 156 : TDB_DATA key = dbwrap_record_get_key(rec);
1407 156 : bool delete_open = false;
1408 :
1409 156 : if (oldval.dsize == 0) {
1410 124 : DBG_DEBUG("[global: 0x%08x] "
1411 : "empty record in %s, skipping...\n",
1412 : state->global_id,
1413 : dbwrap_name(dbwrap_record_get_db(rec)));
1414 124 : state->status = NT_STATUS_OK;
1415 124 : return;
1416 : }
1417 :
1418 32 : state->status = smbXsrv_open_global_parse_record(
1419 : talloc_tos(), key, oldval, &global);
1420 32 : if (!NT_STATUS_IS_OK(state->status)) {
1421 0 : DBG_WARNING("[global: %x08x] "
1422 : "smbXsrv_open_global_parse_record() in %s "
1423 : "failed: %s, deleting record\n",
1424 : state->global_id,
1425 : dbwrap_name(dbwrap_record_get_db(rec)),
1426 : nt_errstr(state->status));
1427 0 : delete_open = true;
1428 0 : goto do_delete;
1429 : }
1430 :
1431 32 : if (server_id_is_disconnected(&global->server_id)) {
1432 32 : struct timeval now = timeval_current();
1433 0 : struct timeval disconnect_time;
1434 0 : struct timeval_buf buf;
1435 0 : int64_t tdiff;
1436 :
1437 32 : nttime_to_timeval(&disconnect_time, global->disconnect_time);
1438 32 : tdiff = usec_time_diff(&now, &disconnect_time);
1439 32 : delete_open = (tdiff >= 1000*global->durable_timeout_msec);
1440 :
1441 32 : DBG_DEBUG("[global: 0x%08x] "
1442 : "disconnected at [%s] %"PRIi64"s ago with "
1443 : "timeout of %"PRIu32"s -%s reached\n",
1444 : state->global_id,
1445 : timeval_str_buf(&disconnect_time,
1446 : false,
1447 : false,
1448 : &buf),
1449 : tdiff/1000000,
1450 : global->durable_timeout_msec / 1000,
1451 : delete_open ? "" : " not");
1452 0 : } else if (!serverid_exists(&global->server_id)) {
1453 0 : struct server_id_buf idbuf;
1454 0 : DBG_DEBUG("[global: 0x%08x] "
1455 : "server[%s] does not exist\n",
1456 : state->global_id,
1457 : server_id_str_buf(global->server_id, &idbuf));
1458 0 : delete_open = true;
1459 : }
1460 :
1461 32 : if (!delete_open) {
1462 4 : state->status = NT_STATUS_OK;
1463 4 : return;
1464 : }
1465 28 : do_delete:
1466 28 : state->status = dbwrap_record_delete(rec);
1467 28 : if (!NT_STATUS_IS_OK(state->status)) {
1468 0 : DBG_WARNING("[global: 0x%08x] "
1469 : "failed to delete record "
1470 : "from %s: %s\n",
1471 : state->global_id,
1472 : dbwrap_name(dbwrap_record_get_db(rec)),
1473 : nt_errstr(state->status));
1474 0 : return;
1475 : }
1476 :
1477 28 : DBG_DEBUG("[global: 0x%08x] "
1478 : "deleted record from %s\n",
1479 : state->global_id,
1480 : dbwrap_name(dbwrap_record_get_db(rec)));
1481 : }
1482 :
1483 156 : NTSTATUS smbXsrv_open_cleanup(uint64_t persistent_id)
1484 : {
1485 156 : struct smbXsrv_open_cleanup_state state = {
1486 : .global_id = persistent_id & UINT32_MAX,
1487 : };
1488 0 : struct smbXsrv_open_global_key_buf key_buf;
1489 156 : TDB_DATA key = smbXsrv_open_global_id_to_key(
1490 : state.global_id, &key_buf);
1491 0 : NTSTATUS status;
1492 :
1493 156 : status = dbwrap_do_locked(
1494 : smbXsrv_open_global_db_ctx,
1495 : key,
1496 : smbXsrv_open_cleanup_fn,
1497 : &state);
1498 156 : if (!NT_STATUS_IS_OK(status)) {
1499 0 : DBG_DEBUG("[global: 0x%08x] dbwrap_do_locked failed: %s\n",
1500 : state.global_id,
1501 : nt_errstr(status));
1502 0 : return status;
1503 : }
1504 :
1505 156 : return state.status;
1506 : }
|
