2 Unix SMB/Netbios implementation.
4 Copyright (C) Stefan Metzmacher 2009
5 Copyright (C) Jeremy Allison 2010
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/>.
21 #include "system/select.h"
22 #include "librpc/gen_ndr/smbXsrv.h"
24 extern int aio_pending_size
;
25 extern int outstanding_aio_calls
;
28 struct smbd_dmapi_context
;
29 extern struct smbd_dmapi_context
*dmapi_ctx
;
32 extern bool dfree_broken
;
34 /* how many write cache buffers have been allocated */
35 extern unsigned int allocated_write_caches
;
37 /* A singleton cache to speed up searching by dev/inode. */
38 struct fsp_singleton_cache
{
43 extern const struct mangle_fns
*mangle_fns
;
45 extern unsigned char *chartest
;
47 extern struct tdb_context
*tdb_mangled_cache
;
50 this determines how many characters are used from the original filename
51 in the 8.3 mangled name. A larger value leads to a weaker hash and more collisions.
52 The largest possible value is 6.
54 extern unsigned mangle_prefix
;
58 extern bool logged_ioctl_message
;
62 extern time_t last_smb_conf_reload_time
;
63 extern time_t last_printer_reload_time
;
64 extern pid_t background_lpq_updater_pid
;
66 /****************************************************************************
67 structure to hold a linked list of queued messages.
69 ****************************************************************************/
70 extern uint32_t common_flags2
;
72 extern struct smb_trans_enc_state
*partial_srv_trans_enc_ctx
;
73 extern struct smb_trans_enc_state
*srv_trans_enc_ctx
;
76 struct security_unix_token ut
;
77 struct security_token
*token
;
79 /* A stack of security contexts. We include the current context as being
80 the first one, so there is room for another MAX_SEC_CTX_DEPTH more. */
81 extern struct sec_ctx sec_ctx_stack
[MAX_SEC_CTX_DEPTH
+ 1];
82 extern int sec_ctx_stack_ndx
;
83 extern bool become_uid_done
;
84 extern bool become_gid_done
;
86 extern connection_struct
*last_conn
;
87 extern uint16_t last_flags
;
89 extern uint32_t global_client_caps
;
91 extern uint16_t fnf_handle
;
94 connection_struct
*conn
;
97 /* A stack of current_user connection contexts. */
98 extern struct conn_ctx conn_ctx_stack
[MAX_SEC_CTX_DEPTH
];
99 extern int conn_ctx_stack_ndx
;
101 struct vfs_init_function_entry
;
102 extern struct vfs_init_function_entry
*backends
;
103 extern char *sparse_buf
;
104 extern char *LastDir
;
106 struct smbd_parent_context
;
107 extern struct smbd_parent_context
*am_parent
;
108 extern struct memcache
*smbd_memcache_ctx
;
109 extern bool exit_firsttime
;
111 struct tstream_context
;
112 struct smbd_smb2_request
;
114 DATA_BLOB
negprot_spnego(TALLOC_CTX
*ctx
, struct smbd_server_connection
*sconn
);
116 void smbd_lock_socket(struct smbd_server_connection
*sconn
);
117 void smbd_unlock_socket(struct smbd_server_connection
*sconn
);
119 NTSTATUS
smbd_do_locking(struct smb_request
*req
,
124 struct smbd_lock_element
*ulocks
,
126 struct smbd_lock_element
*locks
,
129 NTSTATUS
smbd_do_qfilepathinfo(connection_struct
*conn
,
133 struct smb_filename
*smb_fname
,
135 struct timespec write_time_ts
,
136 struct ea_list
*ea_list
,
140 unsigned int max_data_bytes
,
142 unsigned int *pdata_size
);
144 NTSTATUS
smbd_do_setfilepathinfo(connection_struct
*conn
,
145 struct smb_request
*req
,
149 struct smb_filename
*smb_fname
,
150 char **ppdata
, int total_data
,
153 NTSTATUS
smbd_do_qfsinfo(connection_struct
*conn
,
157 unsigned int max_data_bytes
,
161 bool smbd_dirptr_get_entry(TALLOC_CTX
*ctx
,
162 struct dptr_struct
*dirptr
,
167 bool (*match_fn
)(TALLOC_CTX
*ctx
,
172 bool (*mode_fn
)(TALLOC_CTX
*ctx
,
174 struct smb_filename
*smb_fname
,
178 struct smb_filename
**_smb_fname
,
182 bool smbd_dirptr_lanman2_entry(TALLOC_CTX
*ctx
,
183 connection_struct
*conn
,
184 struct dptr_struct
*dirptr
,
186 const char *path_mask
,
189 int requires_resume_key
,
199 bool *got_exact_match
,
200 int *_last_entry_off
,
201 struct ea_list
*name_list
);
203 NTSTATUS
smbd_calculate_access_mask(connection_struct
*conn
,
204 const struct smb_filename
*smb_fname
,
205 uint32_t access_mask
,
206 uint32_t *access_mask_out
);
208 void smbd_notify_cancel_by_smbreq(const struct smb_request
*smbreq
);
210 void smbd_server_connection_terminate_ex(struct smbd_server_connection
*sconn
,
212 const char *location
);
213 #define smbd_server_connection_terminate(sconn, reason) \
214 smbd_server_connection_terminate_ex(sconn, reason, __location__)
216 const char *smb2_opcode_name(uint16_t opcode
);
217 bool smbd_is_smb2_header(const uint8_t *inbuf
, size_t size
);
219 void reply_smb2002(struct smb_request
*req
, uint16_t choice
);
220 void reply_smb20ff(struct smb_request
*req
, uint16_t choice
);
221 void smbd_smb2_first_negprot(struct smbd_server_connection
*sconn
,
222 const uint8_t *inbuf
, size_t size
);
224 NTSTATUS
smbd_smb2_request_error_ex(struct smbd_smb2_request
*req
,
227 const char *location
);
228 #define smbd_smb2_request_error(req, status) \
229 smbd_smb2_request_error_ex(req, status, NULL, __location__)
230 NTSTATUS
smbd_smb2_request_done_ex(struct smbd_smb2_request
*req
,
232 DATA_BLOB body
, DATA_BLOB
*dyn
,
233 const char *location
);
234 #define smbd_smb2_request_done(req, body, dyn) \
235 smbd_smb2_request_done_ex(req, NT_STATUS_OK, body, dyn, __location__)
237 NTSTATUS
smbd_smb2_send_oplock_break(struct smbd_server_connection
*sconn
,
238 uint64_t file_id_persistent
,
239 uint64_t file_id_volatile
,
240 uint8_t oplock_level
);
242 NTSTATUS
smbd_smb2_request_pending_queue(struct smbd_smb2_request
*req
,
243 struct tevent_req
*subreq
,
244 uint32_t defer_time
);
246 struct smb_request
*smbd_smb2_fake_smb_request(struct smbd_smb2_request
*req
);
247 void remove_smb2_chained_fsp(files_struct
*fsp
);
249 NTSTATUS
smbd_smb2_request_verify_creditcharge(struct smbd_smb2_request
*req
,
250 uint32_t data_length
);
252 NTSTATUS
smbd_smb2_request_verify_sizes(struct smbd_smb2_request
*req
,
253 size_t expected_body_size
);
255 NTSTATUS
smbd_smb2_request_process_negprot(struct smbd_smb2_request
*req
);
256 NTSTATUS
smbd_smb2_request_process_sesssetup(struct smbd_smb2_request
*req
);
257 NTSTATUS
smbd_smb2_request_process_logoff(struct smbd_smb2_request
*req
);
258 NTSTATUS
smbd_smb2_request_process_tcon(struct smbd_smb2_request
*req
);
259 NTSTATUS
smbd_smb2_request_process_tdis(struct smbd_smb2_request
*req
);
260 NTSTATUS
smbd_smb2_request_process_create(struct smbd_smb2_request
*req
);
261 NTSTATUS
smbd_smb2_request_process_close(struct smbd_smb2_request
*req
);
262 NTSTATUS
smbd_smb2_request_process_flush(struct smbd_smb2_request
*req
);
263 NTSTATUS
smbd_smb2_request_process_read(struct smbd_smb2_request
*req
);
264 NTSTATUS
smb2_read_complete(struct tevent_req
*req
, ssize_t nread
, int err
);
265 NTSTATUS
smbd_smb2_request_process_write(struct smbd_smb2_request
*req
);
266 NTSTATUS
smb2_write_complete(struct tevent_req
*req
, ssize_t nwritten
, int err
);
267 NTSTATUS
smb2_write_complete_nosync(struct tevent_req
*req
, ssize_t nwritten
,
269 NTSTATUS
smbd_smb2_request_process_lock(struct smbd_smb2_request
*req
);
270 NTSTATUS
smbd_smb2_request_process_ioctl(struct smbd_smb2_request
*req
);
271 NTSTATUS
smbd_smb2_request_process_keepalive(struct smbd_smb2_request
*req
);
272 NTSTATUS
smbd_smb2_request_process_find(struct smbd_smb2_request
*req
);
273 NTSTATUS
smbd_smb2_request_process_notify(struct smbd_smb2_request
*req
);
274 NTSTATUS
smbd_smb2_request_process_getinfo(struct smbd_smb2_request
*req
);
275 NTSTATUS
smbd_smb2_request_process_setinfo(struct smbd_smb2_request
*req
);
276 NTSTATUS
smbd_smb2_request_process_break(struct smbd_smb2_request
*req
);
277 NTSTATUS
smbd_smb2_request_dispatch(struct smbd_smb2_request
*req
);
278 void smbd_smb2_request_dispatch_immediate(struct tevent_context
*ctx
,
279 struct tevent_immediate
*im
,
282 /* SMB1 -> SMB2 glue. */
283 void send_break_message_smb2(files_struct
*fsp
, int level
);
284 struct blocking_lock_record
*get_pending_smb2req_blr(struct smbd_smb2_request
*smb2req
);
285 bool push_blocking_lock_request_smb2( struct byte_range_lock
*br_lck
,
286 struct smb_request
*req
,
291 enum brl_type lock_type
,
292 enum brl_flavour lock_flav
,
295 uint64_t blocking_smblctx
);
296 void process_blocking_lock_queue_smb2(
297 struct smbd_server_connection
*sconn
, struct timeval tv_curr
);
298 void cancel_pending_lock_requests_by_fid_smb2(files_struct
*fsp
,
299 struct byte_range_lock
*br_lck
,
300 enum file_close_type close_type
);
301 /* From smbd/smb2_create.c */
302 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level
);
303 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request
*smb2req
,
304 struct timeval
*p_request_time
,
306 bool open_was_deferred_smb2(struct smbd_server_connection
*sconn
,
308 void remove_deferred_open_message_smb2(
309 struct smbd_server_connection
*sconn
, uint64_t mid
);
310 bool schedule_deferred_open_message_smb2(
311 struct smbd_server_connection
*sconn
, uint64_t mid
);
312 bool push_deferred_open_message_smb2(struct smbd_smb2_request
*smb2req
,
313 struct timeval request_time
,
314 struct timeval timeout
,
319 struct smbXsrv_connection
{
320 struct smbd_server_connection
*sconn
;
322 const struct tsocket_address
*local_address
;
323 const struct tsocket_address
*remote_address
;
324 const char *remote_hostname
;
326 struct tevent_context
*ev_ctx
;
327 struct messaging_context
*msg_ctx
;
329 enum protocol_types protocol
;
333 uint32_t capabilities
;
335 uint16_t security_mode
;
336 uint16_t num_dialects
;
340 uint32_t capabilities
;
342 uint16_t security_mode
;
350 struct msg_state
*msg_state
;
353 * Link into libasys for asynchronous operations
355 struct asys_context
*asys_ctx
;
356 struct tevent_fd
*asys_fde
;
358 uint64_t smbd_idle_profstamp
;
361 * this session_table is used for SMB1 and SMB2,
363 struct smbXsrv_session_table
*session_table
;
365 * this tcon_table is only used for SMB1.
367 struct smbXsrv_tcon_table
*tcon_table
;
369 * this open_table is used for SMB1 and SMB2,
370 * because we have a global sconn->real_max_open_files
373 struct smbXsrv_open_table
*open_table
;
376 NTSTATUS
smbXsrv_version_global_init(const struct server_id
*server_id
);
377 uint32_t smbXsrv_version_global_current(void);
379 NTSTATUS
smbXsrv_connection_init_tables(struct smbXsrv_connection
*conn
,
380 enum protocol_types protocol
);
382 NTSTATUS
smbXsrv_session_global_init(void);
383 NTSTATUS
smbXsrv_session_create(struct smbXsrv_connection
*conn
,
385 struct smbXsrv_session
**_session
);
386 NTSTATUS
smbXsrv_session_update(struct smbXsrv_session
*session
);
387 NTSTATUS
smbXsrv_session_logoff(struct smbXsrv_session
*session
);
388 NTSTATUS
smbXsrv_session_logoff_all(struct smbXsrv_connection
*conn
);
389 NTSTATUS
smb1srv_session_table_init(struct smbXsrv_connection
*conn
);
390 NTSTATUS
smb1srv_session_lookup(struct smbXsrv_connection
*conn
,
391 uint16_t vuid
, NTTIME now
,
392 struct smbXsrv_session
**session
);
393 NTSTATUS
smb2srv_session_table_init(struct smbXsrv_connection
*conn
);
394 NTSTATUS
smb2srv_session_lookup(struct smbXsrv_connection
*conn
,
395 uint64_t session_id
, NTTIME now
,
396 struct smbXsrv_session
**session
);
397 struct tevent_req
*smb2srv_session_close_previous_send(TALLOC_CTX
*mem_ctx
,
398 struct tevent_context
*ev
,
399 struct smbXsrv_connection
*conn
,
400 struct auth_session_info
*session_info
,
401 uint64_t previous_session_id
,
402 uint64_t current_session_id
);
403 NTSTATUS
smb2srv_session_close_previous_recv(struct tevent_req
*req
);
405 NTSTATUS
smbXsrv_tcon_global_init(void);
406 NTSTATUS
smbXsrv_tcon_update(struct smbXsrv_tcon
*tcon
);
407 NTSTATUS
smbXsrv_tcon_disconnect(struct smbXsrv_tcon
*tcon
, uint64_t vuid
);
408 NTSTATUS
smb1srv_tcon_table_init(struct smbXsrv_connection
*conn
);
409 NTSTATUS
smb1srv_tcon_create(struct smbXsrv_connection
*conn
,
411 struct smbXsrv_tcon
**_tcon
);
412 NTSTATUS
smb1srv_tcon_lookup(struct smbXsrv_connection
*conn
,
413 uint16_t tree_id
, NTTIME now
,
414 struct smbXsrv_tcon
**tcon
);
415 NTSTATUS
smb1srv_tcon_disconnect_all(struct smbXsrv_connection
*conn
);
416 NTSTATUS
smb2srv_tcon_table_init(struct smbXsrv_session
*session
);
417 NTSTATUS
smb2srv_tcon_create(struct smbXsrv_session
*session
,
419 struct smbXsrv_tcon
**_tcon
);
420 NTSTATUS
smb2srv_tcon_lookup(struct smbXsrv_session
*session
,
421 uint32_t tree_id
, NTTIME now
,
422 struct smbXsrv_tcon
**tcon
);
423 NTSTATUS
smb2srv_tcon_disconnect_all(struct smbXsrv_session
*session
);
425 NTSTATUS
smbXsrv_open_global_init(void);
426 NTSTATUS
smbXsrv_open_create(struct smbXsrv_connection
*conn
,
427 struct auth_session_info
*session_info
,
429 struct smbXsrv_open
**_open
);
430 uint32_t smbXsrv_open_hash(struct smbXsrv_open
*_open
);
431 NTSTATUS
smbXsrv_open_update(struct smbXsrv_open
*_open
);
432 NTSTATUS
smbXsrv_open_close(struct smbXsrv_open
*op
, NTTIME now
);
433 NTSTATUS
smb1srv_open_table_init(struct smbXsrv_connection
*conn
);
434 NTSTATUS
smb1srv_open_lookup(struct smbXsrv_connection
*conn
,
435 uint16_t fnum
, NTTIME now
,
436 struct smbXsrv_open
**_open
);
437 NTSTATUS
smb2srv_open_table_init(struct smbXsrv_connection
*conn
);
438 NTSTATUS
smb2srv_open_lookup(struct smbXsrv_connection
*conn
,
439 uint64_t persistent_id
,
440 uint64_t volatile_id
,
442 struct smbXsrv_open
**_open
);
444 struct smbd_smb2_request
{
445 struct smbd_smb2_request
*prev
, *next
;
447 TALLOC_CTX
*mem_pool
;
448 struct smbd_smb2_request
**parent
;
450 struct smbd_server_connection
*sconn
;
452 /* the session the request operates on, maybe NULL */
453 struct smbXsrv_session
*session
;
454 uint64_t last_session_id
;
456 /* the tcon the request operates on, maybe NULL */
457 struct smbXsrv_tcon
*tcon
;
462 struct tevent_timer
*async_te
;
464 bool compound_related
;
466 struct timeval request_time
;
468 /* fake smb1 request. */
469 struct smb_request
*smb1req
;
470 struct files_struct
*compat_chain_fsp
;
472 NTSTATUS next_status
;
475 * The sub request for async backend calls.
476 * This is used for SMB2 Cancel.
478 struct tevent_req
*subreq
;
481 /* the NBT header is not allocated */
487 * vector[2] fixed body
488 * vector[3] dynamic body
493 * vector[5] fixed body
494 * vector[6] dynamic body
499 struct iovec
*vector
;
503 /* the NBT header is not allocated */
509 * vector[2] fixed body
510 * vector[3] dynamic body
515 * vector[5] fixed body
516 * vector[6] dynamic body
521 struct iovec
*vector
;
526 struct smbd_server_connection
;
529 struct pending_message_list
;
530 struct pending_auth_data
;
533 struct user_struct
*next
, *prev
;
534 uint64_t vuid
; /* Tag for this entry. */
536 char *session_keystr
; /* used by utmp and pam session code.
540 struct auth_session_info
*session_info
;
542 struct smbXsrv_session
*session
;
545 struct smbd_server_connection
{
547 const struct tsocket_address
*local_address
;
548 const struct tsocket_address
*remote_address
;
549 const char *remote_hostname
;
550 struct tevent_context
*ev_ctx
;
551 struct messaging_context
*msg_ctx
;
552 struct sys_notify_context
*sys_notify_ctx
;
553 struct notify_context
*notify_ctx
;
561 struct user_struct
*users
;
563 size_t num_connections
;
564 struct connection_struct
*connections
;
567 struct files_struct
*files
;
569 int real_max_open_files
;
570 struct fsp_singleton_cache fsp_fi_cache
;
572 struct pending_message_list
*deferred_open_queue
;
575 /* open directory handles. */
577 struct bitmap
*dptr_bmap
;
578 struct dptr_struct
*dirptrs
;
582 uint64_t num_requests
;
584 /* Current number of oplocks we have outstanding. */
586 int32_t exclusive_open
;
587 int32_t level_II_open
;
588 struct kernel_oplocks
*kernel_ops
;
592 struct fd_event
*fde
;
596 * fd for the fcntl lock mutexing access to our sock
601 * fd for the trusted pipe from
607 * fde for the trusted_fd
609 struct fd_event
*trusted_fde
;
612 * Reference count for the fcntl lock to
613 * allow recursive locks.
619 bool encrypted_passwords
;
621 struct auth4_context
*auth_context
;
624 * Size of the data we can receive. Set by us.
625 * Can be modified by the max xmit parameter.
631 uint16_t client_major
;
632 uint16_t client_minor
;
633 uint32_t client_cap_low
;
634 uint32_t client_cap_high
;
640 * Size of data we can send to client. Set
641 * by the client for all protocols above CORE.
642 * Set by us for CORE protocol.
645 uint64_t last_session_tag
;
647 struct smb_signing_state
*signing_state
;
649 struct notify_mid_map
*notify_mid_maps
;
652 /* dlink list we store pending lock records on. */
653 struct blocking_lock_record
*blocking_lock_queue
;
654 /* dlink list we move cancelled lock records onto. */
655 struct blocking_lock_record
*blocking_lock_cancelled_queue
;
657 /* The event that makes us process our blocking lock queue */
658 struct timed_event
*brl_timeout
;
660 bool blocking_lock_unlock_state
;
661 bool blocking_lock_cancel_state
;
665 struct tevent_queue
*recv_queue
;
666 struct tevent_queue
*send_queue
;
667 struct tstream_context
*stream
;
670 /* The event that makes us process our blocking lock queue */
671 struct timed_event
*brl_timeout
;
672 bool blocking_lock_unlock_state
;
674 struct smbd_smb2_request
*requests
;
676 * seqnum_low is the lowest sequence number
681 * seqnum_range is the range of credits we have
682 * granted from the sequence windows starting
685 * This gets incremented when new credits are
686 * granted and gets decremented when the
687 * lowest sequence number is consumed
688 * (when seqnum_low gets incremented).
690 uint16_t seqnum_range
;
692 * credits_grantedThe number of credits we have currently granted
695 * This gets incremented when new credits are
696 * granted and gets decremented when any credit
699 * Note: the decrementing is different compared
702 uint16_t credits_granted
;
704 * The maximum number of credits we will ever
705 * grant to the client.
707 * Typically we will only grant 1/16th of
710 * This is the "server max credits" parameter.
712 uint16_t max_credits
;
714 * a bitmap of size max_credits
716 struct bitmap
*credits_bitmap
;
717 bool supports_multicredit
;
721 bool compound_related_in_progress
;
724 struct smbXsrv_connection
*conn
;
727 extern struct smbXsrv_connection
*global_smbXsrv_connection
;
729 void smbd_init_globals(void);