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"
25 extern struct aio_extra *aio_list_head;
26 extern struct tevent_signal *aio_signal_event;
27 extern int aio_pending_size;
28 extern int outstanding_aio_calls;
32 struct smbd_dmapi_context;
33 extern struct smbd_dmapi_context *dmapi_ctx;
36 extern bool dfree_broken;
38 /* how many write cache buffers have been allocated */
39 extern unsigned int allocated_write_caches;
41 /* A singleton cache to speed up searching by dev/inode. */
42 struct fsp_singleton_cache {
47 extern const struct mangle_fns *mangle_fns;
49 extern unsigned char *chartest;
51 extern struct tdb_context *tdb_mangled_cache;
54 this determines how many characters are used from the original filename
55 in the 8.3 mangled name. A larger value leads to a weaker hash and more collisions.
56 The largest possible value is 6.
58 extern unsigned mangle_prefix;
61 extern struct msg_state *smbd_msg_state;
63 extern bool logged_ioctl_message;
67 extern time_t last_smb_conf_reload_time;
68 extern time_t last_printer_reload_time;
69 extern pid_t background_lpq_updater_pid;
71 /****************************************************************************
72 structure to hold a linked list of queued messages.
74 ****************************************************************************/
75 extern uint32_t common_flags2;
77 extern struct smb_trans_enc_state *partial_srv_trans_enc_ctx;
78 extern struct smb_trans_enc_state *srv_trans_enc_ctx;
81 struct security_unix_token ut;
82 struct security_token *token;
84 /* A stack of security contexts. We include the current context as being
85 the first one, so there is room for another MAX_SEC_CTX_DEPTH more. */
86 extern struct sec_ctx sec_ctx_stack[MAX_SEC_CTX_DEPTH + 1];
87 extern int sec_ctx_stack_ndx;
88 extern bool become_uid_done;
89 extern bool become_gid_done;
91 extern connection_struct *last_conn;
92 extern uint16_t last_flags;
94 extern uint32_t global_client_caps;
96 extern uint16_t fnf_handle;
99 connection_struct *conn;
102 /* A stack of current_user connection contexts. */
103 extern struct conn_ctx conn_ctx_stack[MAX_SEC_CTX_DEPTH];
104 extern int conn_ctx_stack_ndx;
106 struct vfs_init_function_entry;
107 extern struct vfs_init_function_entry *backends;
108 extern char *sparse_buf;
109 extern char *LastDir;
111 /* Current number of oplocks we have outstanding. */
112 extern int32_t exclusive_oplocks_open;
113 extern int32_t level_II_oplocks_open;
114 extern struct kernel_oplocks *koplocks;
116 struct smbd_parent_context;
117 extern struct smbd_parent_context *am_parent;
118 extern struct memcache *smbd_memcache_ctx;
119 extern bool exit_firsttime;
121 extern struct child_pid *children;
122 extern int num_children;
124 struct tstream_context;
125 struct smbd_smb2_request;
126 struct smbd_smb2_session;
127 struct smbd_smb2_tcon;
129 DATA_BLOB negprot_spnego(TALLOC_CTX *ctx, struct smbd_server_connection *sconn);
131 void smbd_lock_socket(struct smbd_server_connection *sconn);
132 void smbd_unlock_socket(struct smbd_server_connection *sconn);
134 NTSTATUS smbd_do_locking(struct smb_request *req,
139 struct smbd_lock_element *ulocks,
141 struct smbd_lock_element *locks,
144 NTSTATUS smbd_do_qfilepathinfo(connection_struct *conn,
148 struct smb_filename *smb_fname,
150 struct timespec write_time_ts,
151 struct ea_list *ea_list,
155 unsigned int max_data_bytes,
157 unsigned int *pdata_size);
159 NTSTATUS smbd_do_setfilepathinfo(connection_struct *conn,
160 struct smb_request *req,
164 struct smb_filename *smb_fname,
165 char **ppdata, int total_data,
168 NTSTATUS smbd_do_qfsinfo(connection_struct *conn,
172 unsigned int max_data_bytes,
176 bool smbd_dirptr_get_entry(TALLOC_CTX *ctx,
177 struct dptr_struct *dirptr,
182 bool (*match_fn)(TALLOC_CTX *ctx,
187 bool (*mode_fn)(TALLOC_CTX *ctx,
189 struct smb_filename *smb_fname,
193 struct smb_filename **_smb_fname,
197 bool smbd_dirptr_lanman2_entry(TALLOC_CTX *ctx,
198 connection_struct *conn,
199 struct dptr_struct *dirptr,
201 const char *path_mask,
204 int requires_resume_key,
214 bool *got_exact_match,
215 int *_last_entry_off,
216 struct ea_list *name_list);
218 NTSTATUS smbd_calculate_access_mask(connection_struct *conn,
219 const struct smb_filename *smb_fname,
221 uint32_t access_mask,
222 uint32_t *access_mask_out);
224 void smbd_notify_cancel_by_smbreq(const struct smb_request *smbreq);
226 void smbd_server_connection_terminate_ex(struct smbd_server_connection *sconn,
228 const char *location);
229 #define smbd_server_connection_terminate(sconn, reason) \
230 smbd_server_connection_terminate_ex(sconn, reason, __location__)
232 struct server_id sconn_server_id(const struct smbd_server_connection *sconn);
234 const char *smb2_opcode_name(uint16_t opcode);
235 bool smbd_is_smb2_header(const uint8_t *inbuf, size_t size);
237 void reply_smb2002(struct smb_request *req, uint16_t choice);
238 void reply_smb20ff(struct smb_request *req, uint16_t choice);
239 void smbd_smb2_first_negprot(struct smbd_server_connection *sconn,
240 const uint8_t *inbuf, size_t size);
242 NTSTATUS smbd_smb2_request_error_ex(struct smbd_smb2_request *req,
245 const char *location);
246 #define smbd_smb2_request_error(req, status) \
247 smbd_smb2_request_error_ex(req, status, NULL, __location__)
248 NTSTATUS smbd_smb2_request_done_ex(struct smbd_smb2_request *req,
250 DATA_BLOB body, DATA_BLOB *dyn,
251 const char *location);
252 #define smbd_smb2_request_done(req, body, dyn) \
253 smbd_smb2_request_done_ex(req, NT_STATUS_OK, body, dyn, __location__)
255 NTSTATUS smbd_smb2_send_oplock_break(struct smbd_server_connection *sconn,
256 uint64_t file_id_persistent,
257 uint64_t file_id_volatile,
258 uint8_t oplock_level);
260 NTSTATUS smbd_smb2_request_pending_queue(struct smbd_smb2_request *req,
261 struct tevent_req *subreq,
262 uint32_t defer_time);
264 struct smb_request *smbd_smb2_fake_smb_request(struct smbd_smb2_request *req);
265 void remove_smb2_chained_fsp(files_struct *fsp);
267 NTSTATUS smbd_smb2_request_verify_sizes(struct smbd_smb2_request *req,
268 size_t expected_body_size);
270 NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req);
271 NTSTATUS smbd_smb2_request_process_sesssetup(struct smbd_smb2_request *req);
272 NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req);
273 NTSTATUS smbd_smb2_request_process_tcon(struct smbd_smb2_request *req);
274 NTSTATUS smbd_smb2_request_process_tdis(struct smbd_smb2_request *req);
275 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req);
276 NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req);
277 NTSTATUS smbd_smb2_request_process_flush(struct smbd_smb2_request *req);
278 NTSTATUS smbd_smb2_request_process_read(struct smbd_smb2_request *req);
279 NTSTATUS smb2_read_complete(struct tevent_req *req, ssize_t nread, int err);
280 NTSTATUS smbd_smb2_request_process_write(struct smbd_smb2_request *req);
281 NTSTATUS smb2_write_complete(struct tevent_req *req, ssize_t nwritten, int err);
282 NTSTATUS smbd_smb2_request_process_lock(struct smbd_smb2_request *req);
283 NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req);
284 NTSTATUS smbd_smb2_request_process_keepalive(struct smbd_smb2_request *req);
285 NTSTATUS smbd_smb2_request_process_find(struct smbd_smb2_request *req);
286 NTSTATUS smbd_smb2_request_process_notify(struct smbd_smb2_request *req);
287 NTSTATUS smbd_smb2_request_process_getinfo(struct smbd_smb2_request *req);
288 NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req);
289 NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req);
290 NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req);
291 void smbd_smb2_request_dispatch_immediate(struct tevent_context *ctx,
292 struct tevent_immediate *im,
295 /* SMB1 -> SMB2 glue. */
296 void send_break_message_smb2(files_struct *fsp, int level);
297 struct blocking_lock_record *get_pending_smb2req_blr(struct smbd_smb2_request *smb2req);
298 bool push_blocking_lock_request_smb2( struct byte_range_lock *br_lck,
299 struct smb_request *req,
304 enum brl_type lock_type,
305 enum brl_flavour lock_flav,
308 uint64_t blocking_smblctx);
309 void process_blocking_lock_queue_smb2(
310 struct smbd_server_connection *sconn, struct timeval tv_curr);
311 void cancel_pending_lock_requests_by_fid_smb2(files_struct *fsp,
312 struct byte_range_lock *br_lck,
313 enum file_close_type close_type);
314 /* From smbd/smb2_create.c */
315 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level);
316 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
317 struct timeval *p_request_time,
319 bool open_was_deferred_smb2(struct smbd_server_connection *sconn,
321 void remove_deferred_open_message_smb2(
322 struct smbd_server_connection *sconn, uint64_t mid);
323 void schedule_deferred_open_message_smb2(
324 struct smbd_server_connection *sconn, uint64_t mid);
325 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
326 struct timeval request_time,
327 struct timeval timeout,
332 struct smbd_smb2_request {
333 struct smbd_smb2_request *prev, *next;
335 TALLOC_CTX *mem_pool;
336 struct smbd_smb2_request **parent;
338 struct smbd_server_connection *sconn;
340 /* the session the request operates on, maybe NULL */
341 struct smbd_smb2_session *session;
342 uint64_t last_session_id;
344 /* the tcon the request operates on, maybe NULL */
345 struct smbd_smb2_tcon *tcon;
350 struct tevent_timer *async_te;
352 bool compound_related;
354 /* fake smb1 request. */
355 struct smb_request *smb1req;
356 struct files_struct *compat_chain_fsp;
358 NTSTATUS next_status;
361 * The sub request for async backend calls.
362 * This is used for SMB2 Cancel.
364 struct tevent_req *subreq;
367 /* the NBT header is not allocated */
373 * vector[2] fixed body
374 * vector[3] dynamic body
379 * vector[5] fixed body
380 * vector[6] dynamic body
385 struct iovec *vector;
389 /* the NBT header is not allocated */
395 * vector[2] fixed body
396 * vector[3] dynamic body
401 * vector[5] fixed body
402 * vector[6] dynamic body
407 struct iovec *vector;
412 struct smbd_server_connection;
414 struct smbd_smb2_session {
415 struct smbd_smb2_session *prev, *next;
416 struct smbd_server_connection *sconn;
419 struct auth_ntlmssp_state *auth_ntlmssp_state;
420 struct auth_session_info *session_info;
421 DATA_BLOB session_key;
424 user_struct *compat_vuser;
427 /* an id tree used to allocate tids */
428 struct idr_context *idtree;
430 /* this is the limit of tid values for this connection */
433 struct smbd_smb2_tcon *list;
437 struct smbd_smb2_tcon {
438 struct smbd_smb2_tcon *prev, *next;
439 struct smbd_smb2_session *session;
442 connection_struct *compat_conn;
445 struct pending_message_list;
446 struct pending_auth_data;
448 struct smbd_server_connection {
450 const struct tsocket_address *local_address;
451 const struct tsocket_address *remote_address;
452 const char *remote_hostname;
453 struct tevent_context *ev_ctx;
454 struct messaging_context *msg_ctx;
462 * Cache for calling poll(2) to avoid allocations in our
467 struct files_struct *files;
468 struct bitmap *file_bmap;
469 int real_max_open_files;
471 struct fsp_singleton_cache fsp_fi_cache;
472 unsigned long file_gen_counter;
475 /* Try GENSEC hook */
476 bool use_gensec_hook;
478 /* number of open connections (tcons) */
481 struct pending_message_list *deferred_open_queue;
484 /* open directory handles. */
486 struct bitmap *dptr_bmap;
487 struct dptr_struct *dirptrs;
491 uint64_t num_requests;
494 struct fd_event *fde;
498 * fd for the fcntl lock mutexing access to our sock
503 * fd for the trusted pipe from
509 * fde for the trusted_fd
511 struct fd_event *trusted_fde;
514 * Reference count for the fcntl lock to
515 * allow recursive locks.
521 bool encrypted_passwords;
523 struct auth_context *auth_context;
526 * Size of the data we can receive. Set by us.
527 * Can be modified by the max xmit parameter.
533 uint16_t client_major;
534 uint16_t client_minor;
535 uint32_t client_cap_low;
536 uint32_t client_cap_high;
542 * Size of data we can send to client. Set
543 * by the client for all protocols above CORE.
544 * Set by us for CORE protocol.
547 uint16_t last_session_tag;
549 /* users from session setup */
550 char *session_userlist;
551 /* workgroup from session setup. */
552 char *session_workgroup;
554 * this holds info on user ids that are already
555 * validated for this VC
557 user_struct *validated_users;
559 int num_validated_vuids;
562 connection_struct *Connections;
563 /* number of open connections */
566 struct smb_signing_state *signing_state;
567 /* List to store partial SPNEGO auth fragments. */
568 struct pending_auth_data *pd_list;
570 struct notify_mid_map *notify_mid_maps;
573 /* dlink list we store pending lock records on. */
574 struct blocking_lock_record *blocking_lock_queue;
575 /* dlink list we move cancelled lock records onto. */
576 struct blocking_lock_record *blocking_lock_cancelled_queue;
578 /* The event that makes us process our blocking lock queue */
579 struct timed_event *brl_timeout;
581 bool blocking_lock_unlock_state;
582 bool blocking_lock_cancel_state;
586 struct tevent_queue *recv_queue;
587 struct tevent_queue *send_queue;
588 struct tstream_context *stream;
591 /* an id tree used to allocate vuids */
592 /* this holds info on session vuids that are already
593 * validated for this VC */
594 struct idr_context *idtree;
596 /* this is the limit of vuid values for this connection */
599 struct smbd_smb2_session *list;
602 /* The event that makes us process our blocking lock queue */
603 struct timed_event *brl_timeout;
604 bool blocking_lock_unlock_state;
606 struct smbd_smb2_request *requests;
608 uint32_t credits_granted;
609 uint32_t max_credits;
613 struct bitmap *credits_bitmap;
614 bool compound_related_in_progress;
618 extern struct smbd_server_connection *smbd_server_conn;
620 struct smbd_server_connection *msg_ctx_to_sconn(struct messaging_context *msg_ctx);
622 void smbd_init_globals(void);