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 struct smb_srv_trans_enc_ctx;
78 extern struct smb_srv_trans_enc_ctx *partial_srv_trans_enc_ctx;
79 extern struct smb_srv_trans_enc_ctx *srv_trans_enc_ctx;
82 struct security_unix_token ut;
83 struct security_token *token;
85 /* A stack of security contexts. We include the current context as being
86 the first one, so there is room for another MAX_SEC_CTX_DEPTH more. */
87 extern struct sec_ctx sec_ctx_stack[MAX_SEC_CTX_DEPTH + 1];
88 extern int sec_ctx_stack_ndx;
89 extern bool become_uid_done;
90 extern bool become_gid_done;
92 extern connection_struct *last_conn;
93 extern uint16_t last_flags;
95 extern uint32_t global_client_caps;
97 extern uint16_t fnf_handle;
100 connection_struct *conn;
103 /* A stack of current_user connection contexts. */
104 extern struct conn_ctx conn_ctx_stack[MAX_SEC_CTX_DEPTH];
105 extern int conn_ctx_stack_ndx;
107 struct vfs_init_function_entry;
108 extern struct vfs_init_function_entry *backends;
109 extern char *sparse_buf;
110 extern char *LastDir;
112 /* Current number of oplocks we have outstanding. */
113 extern int32_t exclusive_oplocks_open;
114 extern int32_t level_II_oplocks_open;
115 extern struct kernel_oplocks *koplocks;
117 extern int am_parent;
118 extern struct event_context *smbd_event_ctx;
119 extern struct messaging_context *smbd_msg_ctx;
120 extern struct memcache *smbd_memcache_ctx;
121 extern bool exit_firsttime;
123 extern struct child_pid *children;
124 extern int num_children;
126 struct tstream_context;
127 struct smbd_smb2_request;
128 struct smbd_smb2_session;
129 struct smbd_smb2_tcon;
131 DATA_BLOB negprot_spnego(TALLOC_CTX *ctx, struct smbd_server_connection *sconn);
133 void smbd_lock_socket(struct smbd_server_connection *sconn);
134 void smbd_unlock_socket(struct smbd_server_connection *sconn);
136 NTSTATUS smbd_do_locking(struct smb_request *req,
141 struct smbd_lock_element *ulocks,
143 struct smbd_lock_element *locks,
146 NTSTATUS smbd_do_qfilepathinfo(connection_struct *conn,
150 struct smb_filename *smb_fname,
152 struct timespec write_time_ts,
153 struct ea_list *ea_list,
157 unsigned int max_data_bytes,
159 unsigned int *pdata_size);
161 NTSTATUS smbd_do_setfilepathinfo(connection_struct *conn,
162 struct smb_request *req,
166 struct smb_filename *smb_fname,
167 char **ppdata, int total_data,
170 NTSTATUS smbd_do_qfsinfo(connection_struct *conn,
174 unsigned int max_data_bytes,
178 bool smbd_dirptr_get_entry(TALLOC_CTX *ctx,
179 struct dptr_struct *dirptr,
184 bool (*match_fn)(TALLOC_CTX *ctx,
189 bool (*mode_fn)(TALLOC_CTX *ctx,
191 struct smb_filename *smb_fname,
195 struct smb_filename **_smb_fname,
199 bool smbd_dirptr_lanman2_entry(TALLOC_CTX *ctx,
200 connection_struct *conn,
201 struct dptr_struct *dirptr,
203 const char *path_mask,
206 int requires_resume_key,
216 bool *got_exact_match,
217 int *_last_entry_off,
218 struct ea_list *name_list);
220 NTSTATUS smbd_calculate_access_mask(connection_struct *conn,
221 const struct smb_filename *smb_fname,
223 uint32_t access_mask,
224 uint32_t *access_mask_out);
225 NTSTATUS smbd_check_open_rights(struct connection_struct *conn,
226 const struct smb_filename *smb_fname,
227 uint32_t access_mask,
228 uint32_t *access_granted);
230 void smbd_notify_cancel_by_smbreq(const struct smb_request *smbreq);
232 void smbd_server_connection_terminate_ex(struct smbd_server_connection *sconn,
234 const char *location);
235 #define smbd_server_connection_terminate(sconn, reason) \
236 smbd_server_connection_terminate_ex(sconn, reason, __location__)
238 struct server_id sconn_server_id(const struct smbd_server_connection *sconn);
240 const char *smb2_opcode_name(uint16_t opcode);
241 bool smbd_is_smb2_header(const uint8_t *inbuf, size_t size);
243 void reply_smb2002(struct smb_request *req, uint16_t choice);
244 void smbd_smb2_first_negprot(struct smbd_server_connection *sconn,
245 const uint8_t *inbuf, size_t size);
247 NTSTATUS smbd_smb2_request_error_ex(struct smbd_smb2_request *req,
250 const char *location);
251 #define smbd_smb2_request_error(req, status) \
252 smbd_smb2_request_error_ex(req, status, NULL, __location__)
253 NTSTATUS smbd_smb2_request_done_ex(struct smbd_smb2_request *req,
255 DATA_BLOB body, DATA_BLOB *dyn,
256 const char *location);
257 #define smbd_smb2_request_done(req, body, dyn) \
258 smbd_smb2_request_done_ex(req, NT_STATUS_OK, body, dyn, __location__)
260 NTSTATUS smbd_smb2_send_oplock_break(struct smbd_server_connection *sconn,
261 uint64_t file_id_persistent,
262 uint64_t file_id_volatile,
263 uint8_t oplock_level);
265 NTSTATUS smbd_smb2_request_pending_queue(struct smbd_smb2_request *req,
266 struct tevent_req *subreq);
268 struct smb_request *smbd_smb2_fake_smb_request(struct smbd_smb2_request *req);
269 void remove_smb2_chained_fsp(files_struct *fsp);
271 NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req);
272 NTSTATUS smbd_smb2_request_process_sesssetup(struct smbd_smb2_request *req);
273 NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req);
274 NTSTATUS smbd_smb2_request_process_tcon(struct smbd_smb2_request *req);
275 NTSTATUS smbd_smb2_request_process_tdis(struct smbd_smb2_request *req);
276 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req);
277 NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req);
278 NTSTATUS smbd_smb2_request_process_flush(struct smbd_smb2_request *req);
279 NTSTATUS smbd_smb2_request_process_read(struct smbd_smb2_request *req);
280 NTSTATUS smb2_read_complete(struct tevent_req *req, ssize_t nread, int err);
281 NTSTATUS smbd_smb2_request_process_write(struct smbd_smb2_request *req);
282 NTSTATUS smb2_write_complete(struct tevent_req *req, ssize_t nwritten, int err);
283 NTSTATUS smbd_smb2_request_process_lock(struct smbd_smb2_request *req);
284 NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req);
285 NTSTATUS smbd_smb2_request_process_keepalive(struct smbd_smb2_request *req);
286 NTSTATUS smbd_smb2_request_process_find(struct smbd_smb2_request *req);
287 NTSTATUS smbd_smb2_request_process_notify(struct smbd_smb2_request *req);
288 NTSTATUS smbd_smb2_request_process_getinfo(struct smbd_smb2_request *req);
289 NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req);
290 NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req);
291 NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req);
292 void smbd_smb2_request_dispatch_immediate(struct tevent_context *ctx,
293 struct tevent_immediate *im,
296 /* SMB1 -> SMB2 glue. */
297 void send_break_message_smb2(files_struct *fsp, int level);
298 struct blocking_lock_record *get_pending_smb2req_blr(struct smbd_smb2_request *smb2req);
299 bool push_blocking_lock_request_smb2( struct byte_range_lock *br_lck,
300 struct smb_request *req,
305 enum brl_type lock_type,
306 enum brl_flavour lock_flav,
309 uint64_t blocking_smblctx);
310 void process_blocking_lock_queue_smb2(
311 struct smbd_server_connection *sconn, struct timeval tv_curr);
312 void cancel_pending_lock_requests_by_fid_smb2(files_struct *fsp,
313 struct byte_range_lock *br_lck,
314 enum file_close_type close_type);
315 /* From smbd/smb2_create.c */
316 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level);
317 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
318 struct timeval *p_request_time,
320 bool open_was_deferred_smb2(struct smbd_server_connection *sconn,
322 void remove_deferred_open_message_smb2(
323 struct smbd_server_connection *sconn, uint64_t mid);
324 void schedule_deferred_open_message_smb2(
325 struct smbd_server_connection *sconn, uint64_t mid);
326 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
327 struct timeval request_time,
328 struct timeval timeout,
333 struct smbd_smb2_request {
334 struct smbd_smb2_request *prev, *next;
336 TALLOC_CTX *mem_pool;
337 struct smbd_smb2_request **parent;
339 struct smbd_server_connection *sconn;
341 /* the session the request operates on, maybe NULL */
342 struct smbd_smb2_session *session;
344 /* the tcon the request operates on, maybe NULL */
345 struct smbd_smb2_tcon *tcon;
351 bool compound_related;
353 /* fake smb1 request. */
354 struct smb_request *smb1req;
355 struct files_struct *compat_chain_fsp;
357 NTSTATUS next_status;
360 * The sub request for async backend calls.
361 * This is used for SMB2 Cancel.
363 struct tevent_req *subreq;
366 /* the NBT header is not allocated */
372 * vector[2] fixed body
373 * vector[3] dynamic body
378 * vector[5] fixed body
379 * vector[6] dynamic body
384 struct iovec *vector;
388 /* the NBT header is not allocated */
394 * vector[2] fixed body
395 * vector[3] dynamic body
400 * vector[5] fixed body
401 * vector[6] dynamic body
406 struct iovec *vector;
411 struct smbd_server_connection;
413 struct smbd_smb2_session {
414 struct smbd_smb2_session *prev, *next;
415 struct smbd_server_connection *sconn;
418 struct auth_ntlmssp_state *auth_ntlmssp_state;
419 struct auth_session_info *session_info;
420 DATA_BLOB session_key;
423 user_struct *compat_vuser;
426 /* an id tree used to allocate tids */
427 struct idr_context *idtree;
429 /* this is the limit of tid values for this connection */
432 struct smbd_smb2_tcon *list;
436 struct smbd_smb2_tcon {
437 struct smbd_smb2_tcon *prev, *next;
438 struct smbd_smb2_session *session;
441 connection_struct *compat_conn;
444 struct pending_message_list;
445 struct pending_auth_data;
447 struct smbd_server_connection {
449 const struct tsocket_address *local_address;
450 const struct tsocket_address *remote_address;
451 const char *remote_hostname;
452 struct messaging_context *msg_ctx;
460 * Cache for calling poll(2) to avoid allocations in our
465 struct files_struct *files;
466 struct bitmap *file_bmap;
467 int real_max_open_files;
469 struct fsp_singleton_cache fsp_fi_cache;
470 unsigned long file_gen_counter;
473 /* Try GENSEC hook */
474 bool use_gensec_hook;
476 /* number of open connections (tcons) */
479 struct pending_message_list *deferred_open_queue;
482 /* open directory handles. */
484 struct bitmap *dptr_bmap;
485 struct dptr_struct *dirptrs;
489 uint64_t num_requests;
492 struct fd_event *fde;
496 * fd for the fcntl lock mutexing access to our sock
501 * fd for the trusted pipe from
507 * fde for the trusted_fd
509 struct fd_event *trusted_fde;
512 * Reference count for the fcntl lock to
513 * allow recursive locks.
519 bool encrypted_passwords;
521 struct auth_context *auth_context;
524 * Size of the data we can receive. Set by us.
525 * Can be modified by the max xmit parameter.
533 * Size of data we can send to client. Set
534 * by the client for all protocols above CORE.
535 * Set by us for CORE protocol.
538 uint16_t last_session_tag;
540 /* users from session setup */
541 char *session_userlist;
542 /* workgroup from session setup. */
543 char *session_workgroup;
545 * this holds info on user ids that are already
546 * validated for this VC
548 user_struct *validated_users;
550 int num_validated_vuids;
553 connection_struct *Connections;
554 /* number of open connections */
557 struct smb_signing_state *signing_state;
558 /* List to store partial SPNEGO auth fragments. */
559 struct pending_auth_data *pd_list;
561 struct notify_mid_map *notify_mid_maps;
564 /* dlink list we store pending lock records on. */
565 struct blocking_lock_record *blocking_lock_queue;
566 /* dlink list we move cancelled lock records onto. */
567 struct blocking_lock_record *blocking_lock_cancelled_queue;
569 /* The event that makes us process our blocking lock queue */
570 struct timed_event *brl_timeout;
572 bool blocking_lock_unlock_state;
573 bool blocking_lock_cancel_state;
577 struct tevent_context *event_ctx;
578 struct tevent_queue *recv_queue;
579 struct tevent_queue *send_queue;
580 struct tstream_context *stream;
582 /* an id tree used to allocate vuids */
583 /* this holds info on session vuids that are already
584 * validated for this VC */
585 struct idr_context *idtree;
587 /* this is the limit of vuid values for this connection */
590 struct smbd_smb2_session *list;
593 /* The event that makes us process our blocking lock queue */
594 struct timed_event *brl_timeout;
595 bool blocking_lock_unlock_state;
597 struct smbd_smb2_request *requests;
599 uint32_t credits_granted;
600 uint32_t max_credits;
601 struct bitmap *credits_bitmap;
602 bool compound_related_in_progress;
606 extern struct smbd_server_connection *smbd_server_conn;
608 struct smbd_server_connection *msg_ctx_to_sconn(struct messaging_context *msg_ctx);
610 void smbd_init_globals(void);