summaryrefslogtreecommitdiff
path: root/source3/smbd/globals.h
blob: 31d001b18577b3a96d8c161f341f032208841618 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
/*
   Unix SMB/Netbios implementation.
   smbd globals
   Copyright (C) Stefan Metzmacher 2009
   Copyright (C) Jeremy Allison 2010

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#if defined(WITH_AIO)
struct aio_extra;
extern struct aio_extra *aio_list_head;
extern struct tevent_signal *aio_signal_event;
extern int aio_pending_size;
extern int outstanding_aio_calls;
#endif

#ifdef USE_DMAPI
struct smbd_dmapi_context;
extern struct smbd_dmapi_context *dmapi_ctx;
#endif

extern bool dfree_broken;

/* how many write cache buffers have been allocated */
extern unsigned int allocated_write_caches;

extern int real_max_open_files;
extern struct bitmap *file_bmap;
extern files_struct *Files;
extern int files_used;
/* A singleton cache to speed up searching by dev/inode. */
struct fsp_singleton_cache {
	files_struct *fsp;
	struct file_id id;
};
extern struct fsp_singleton_cache fsp_fi_cache;
extern unsigned long file_gen_counter;
extern int first_file;

extern const struct mangle_fns *mangle_fns;

extern unsigned char *chartest;
extern TDB_CONTEXT *tdb_mangled_cache;

/* these tables are used to provide fast tests for characters */
extern unsigned char char_flags[256];
/*
  this determines how many characters are used from the original filename
  in the 8.3 mangled name. A larger value leads to a weaker hash and more collisions.
  The largest possible value is 6.
*/
extern unsigned mangle_prefix;
extern unsigned char base_reverse[256];

struct msg_state;
extern struct msg_state *smbd_msg_state;

extern bool logged_ioctl_message;

extern int trans_num;

extern pid_t mypid;
extern time_t last_smb_conf_reload_time;
extern time_t last_printer_reload_time;
/****************************************************************************
 structure to hold a linked list of queued messages.
 for processing.
****************************************************************************/
struct pending_message_list;
extern struct pending_message_list *deferred_open_queue;
extern uint32_t common_flags2;

struct smb_srv_trans_enc_ctx;
extern struct smb_srv_trans_enc_ctx *partial_srv_trans_enc_ctx;
extern struct smb_srv_trans_enc_ctx *srv_trans_enc_ctx;

struct sec_ctx {
	UNIX_USER_TOKEN ut;
	NT_USER_TOKEN *token;
};
/* A stack of security contexts.  We include the current context as being
   the first one, so there is room for another MAX_SEC_CTX_DEPTH more. */
extern struct sec_ctx sec_ctx_stack[MAX_SEC_CTX_DEPTH + 1];
extern int sec_ctx_stack_ndx;
extern bool become_uid_done;
extern bool become_gid_done;

extern connection_struct *last_conn;
extern uint16_t last_flags;

extern uint32_t global_client_caps;

extern uint16_t fnf_handle;

struct conn_ctx {
	connection_struct *conn;
	uint16 vuid;
};
/* A stack of current_user connection contexts. */
extern struct conn_ctx conn_ctx_stack[MAX_SEC_CTX_DEPTH];
extern int conn_ctx_stack_ndx;

struct vfs_init_function_entry;
extern struct vfs_init_function_entry *backends;
extern char *sparse_buf;

/* Current number of oplocks we have outstanding. */
extern int32_t exclusive_oplocks_open;
extern int32_t level_II_oplocks_open;
extern struct kernel_oplocks *koplocks;

extern int am_parent;
extern int server_fd;
extern struct event_context *smbd_event_ctx;
extern struct messaging_context *smbd_msg_ctx;
extern struct memcache *smbd_memcache_ctx;
extern bool exit_firsttime;
struct child_pid;
extern struct child_pid *children;
extern int num_children;

struct tstream_context;
struct smbd_smb2_request;
struct smbd_smb2_session;
struct smbd_smb2_tcon;

DATA_BLOB negprot_spnego(struct smbd_server_connection *sconn);

void smbd_lock_socket(struct smbd_server_connection *sconn);
void smbd_unlock_socket(struct smbd_server_connection *sconn);

NTSTATUS smb2_signing_sign_pdu(DATA_BLOB session_key,
			       struct iovec *vector,
			       int count);
NTSTATUS smb2_signing_check_pdu(DATA_BLOB session_key,
				const struct iovec *vector,
				int count);

NTSTATUS smbd_do_locking(struct smb_request *req,
			 files_struct *fsp,
			 uint8_t type,
			 int32_t timeout,
			 uint16_t num_ulocks,
			 struct smbd_lock_element *ulocks,
			 uint16_t num_locks,
			 struct smbd_lock_element *locks,
			 bool *async);

NTSTATUS smbd_do_qfilepathinfo(connection_struct *conn,
			       TALLOC_CTX *mem_ctx,
			       uint16_t info_level,
			       files_struct *fsp,
			       struct smb_filename *smb_fname,
			       bool delete_pending,
			       struct timespec write_time_ts,
			       struct ea_list *ea_list,
			       int lock_data_count,
			       char *lock_data,
			       uint16_t flags2,
			       unsigned int max_data_bytes,
			       char **ppdata,
			       unsigned int *pdata_size);

NTSTATUS smbd_do_setfilepathinfo(connection_struct *conn,
				struct smb_request *req,
				TALLOC_CTX *mem_ctx,
				uint16_t info_level,
				files_struct *fsp,
				struct smb_filename *smb_fname,
				char **ppdata, int total_data,
				int *ret_data_size);

NTSTATUS smbd_do_qfsinfo(connection_struct *conn,
			 TALLOC_CTX *mem_ctx,
			 uint16_t info_level,
			 uint16_t flags2,
			 unsigned int max_data_bytes,
			 char **ppdata,
			 int *ret_data_len);

bool smbd_dirptr_get_entry(TALLOC_CTX *ctx,
			   struct dptr_struct *dirptr,
			   const char *mask,
			   uint32_t dirtype,
			   bool dont_descend,
			   bool ask_sharemode,
			   bool (*match_fn)(TALLOC_CTX *ctx,
					    void *private_data,
					    const char *dname,
					    const char *mask,
					    char **_fname),
			   bool (*mode_fn)(TALLOC_CTX *ctx,
					   void *private_data,
					   struct smb_filename *smb_fname,
					   uint32_t *_mode),
			   void *private_data,
			   char **_fname,
			   struct smb_filename **_smb_fname,
			   uint32_t *_mode,
			   long *_prev_offset);

bool smbd_dirptr_lanman2_entry(TALLOC_CTX *ctx,
			       connection_struct *conn,
			       struct dptr_struct *dirptr,
			       uint16 flags2,
			       const char *path_mask,
			       uint32 dirtype,
			       int info_level,
			       int requires_resume_key,
			       bool dont_descend,
			       bool ask_sharemode,
			       uint8_t align,
			       bool do_pad,
			       char **ppdata,
			       char *base_data,
			       char *end_data,
			       int space_remaining,
			       bool *out_of_space,
			       bool *got_exact_match,
			       int *_last_entry_off,
			       struct ea_list *name_list);

NTSTATUS smbd_check_open_rights(struct connection_struct *conn,
				const struct smb_filename *smb_fname,
				uint32_t access_mask,
				uint32_t *access_granted);

void smbd_notify_cancel_by_smbreq(const struct smb_request *smbreq);

void smbd_server_connection_terminate_ex(struct smbd_server_connection *sconn,
					 const char *reason,
					 const char *location);
#define smbd_server_connection_terminate(sconn, reason) \
	smbd_server_connection_terminate_ex(sconn, reason, __location__)

bool smbd_is_smb2_header(const uint8_t *inbuf, size_t size);

void reply_smb2002(struct smb_request *req, uint16_t choice);
void smbd_smb2_first_negprot(struct smbd_server_connection *sconn,
			     const uint8_t *inbuf, size_t size);

NTSTATUS smbd_smb2_request_error_ex(struct smbd_smb2_request *req,
				    NTSTATUS status,
				    DATA_BLOB *info,
				    const char *location);
#define smbd_smb2_request_error(req, status) \
	smbd_smb2_request_error_ex(req, status, NULL, __location__)
NTSTATUS smbd_smb2_request_done_ex(struct smbd_smb2_request *req,
				   NTSTATUS status,
				   DATA_BLOB body, DATA_BLOB *dyn,
				   const char *location);
#define smbd_smb2_request_done(req, body, dyn) \
	smbd_smb2_request_done_ex(req, NT_STATUS_OK, body, dyn, __location__)

NTSTATUS smbd_smb2_send_oplock_break(struct smbd_server_connection *sconn,
				     uint64_t file_id_persistent,
				     uint64_t file_id_volatile,
				     uint8_t oplock_level);

NTSTATUS smbd_smb2_request_pending_queue(struct smbd_smb2_request *req,
					 struct tevent_req *subreq);

NTSTATUS smbd_smb2_request_check_session(struct smbd_smb2_request *req);
NTSTATUS smbd_smb2_request_check_tcon(struct smbd_smb2_request *req);

struct smb_request *smbd_smb2_fake_smb_request(struct smbd_smb2_request *req);
void remove_smb2_chained_fsp(files_struct *fsp);

NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req);
NTSTATUS smbd_smb2_request_process_sesssetup(struct smbd_smb2_request *req);
NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req);
NTSTATUS smbd_smb2_request_process_tcon(struct smbd_smb2_request *req);
NTSTATUS smbd_smb2_request_process_tdis(struct smbd_smb2_request *req);
NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req);
NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req);
NTSTATUS smbd_smb2_request_process_flush(struct smbd_smb2_request *req);
NTSTATUS smbd_smb2_request_process_read(struct smbd_smb2_request *req);
NTSTATUS smb2_read_complete(struct tevent_req *req, ssize_t nread, int err);
NTSTATUS smbd_smb2_request_process_write(struct smbd_smb2_request *req);
NTSTATUS smb2_write_complete(struct tevent_req *req, ssize_t nwritten, int err);
NTSTATUS smbd_smb2_request_process_lock(struct smbd_smb2_request *req);
NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req);
NTSTATUS smbd_smb2_request_process_keepalive(struct smbd_smb2_request *req);
NTSTATUS smbd_smb2_request_process_find(struct smbd_smb2_request *req);
NTSTATUS smbd_smb2_request_process_notify(struct smbd_smb2_request *req);
NTSTATUS smbd_smb2_request_process_getinfo(struct smbd_smb2_request *req);
NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req);
NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req);
NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req);
void smbd_smb2_request_dispatch_immediate(struct tevent_context *ctx,
				struct tevent_immediate *im,
				void *private_data);

/* SMB1 -> SMB2 glue. */
void send_break_message_smb2(files_struct *fsp, int level);
struct blocking_lock_record *get_pending_smb2req_blr(struct smbd_smb2_request *smb2req);
bool push_blocking_lock_request_smb2( struct byte_range_lock *br_lck,
				struct smb_request *req,
				files_struct *fsp,
				int lock_timeout,
				int lock_num,
				uint64_t smblctx,
				enum brl_type lock_type,
				enum brl_flavour lock_flav,
				uint64_t offset,
				uint64_t count,
				uint64_t blocking_smblctx);
void process_blocking_lock_queue_smb2(struct timeval tv_curr);
void cancel_pending_lock_requests_by_fid_smb2(files_struct *fsp,
			struct byte_range_lock *br_lck,
			enum file_close_type close_type);
/* From smbd/smb2_create.c */
int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level);
bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
			struct timeval *p_request_time,
			void **pp_state);
bool open_was_deferred_smb2(uint64_t mid);
void remove_deferred_open_message_smb2(uint64_t mid);
void schedule_deferred_open_message_smb2(uint64_t mid);
bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
			struct timeval request_time,
			struct timeval timeout,
			struct file_id id,
			char *private_data,
			size_t priv_len);

struct smbd_smb2_request {
	struct smbd_smb2_request *prev, *next;

	TALLOC_CTX *mem_pool;
	struct smbd_smb2_request **parent;

	struct smbd_server_connection *sconn;

	/* the session the request operates on, maybe NULL */
	struct smbd_smb2_session *session;

	/* the tcon the request operates on, maybe NULL */
	struct smbd_smb2_tcon *tcon;

	int current_idx;
	bool do_signing;
	bool async;
	bool cancelled;

	/* fake smb1 request. */
	struct smb_request *smb1req;
	struct files_struct *compat_chain_fsp;

	NTSTATUS next_status;

	/*
	 * The sub request for async backend calls.
	 * This is used for SMB2 Cancel.
	 */
	struct tevent_req *subreq;

	struct {
		/* the NBT header is not allocated */
		uint8_t nbt_hdr[4];
		/*
		 * vector[0] NBT
		 * .
		 * vector[1] SMB2
		 * vector[2] fixed body
		 * vector[3] dynamic body
		 * .
		 * .
		 * .
		 * vector[4] SMB2
		 * vector[5] fixed body
		 * vector[6] dynamic body
		 * .
		 * .
		 * .
		 */
		struct iovec *vector;
		int vector_count;
	} in;
	struct {
		/* the NBT header is not allocated */
		uint8_t nbt_hdr[4];
		/*
		 * vector[0] NBT
		 * .
		 * vector[1] SMB2
		 * vector[2] fixed body
		 * vector[3] dynamic body
		 * .
		 * .
		 * .
		 * vector[4] SMB2
		 * vector[5] fixed body
		 * vector[6] dynamic body
		 * .
		 * .
		 * .
		 */
		struct iovec *vector;
		int vector_count;
	} out;
};

struct smbd_server_connection;

struct smbd_smb2_session {
	struct smbd_smb2_session *prev, *next;
	struct smbd_server_connection *sconn;
	NTSTATUS status;
	uint64_t vuid;
	struct auth_ntlmssp_state *auth_ntlmssp_state;
	struct auth_serversupplied_info *server_info;
	DATA_BLOB session_key;
	bool do_signing;

	user_struct *compat_vuser;

	struct {
		/* an id tree used to allocate tids */
		struct idr_context *idtree;

		/* this is the limit of tid values for this connection */
		uint32_t limit;

		struct smbd_smb2_tcon *list;
	} tcons;
};

struct smbd_smb2_tcon {
	struct smbd_smb2_tcon *prev, *next;
	struct smbd_smb2_session *session;
	uint32_t tid;
	int snum;
	connection_struct *compat_conn;
};

struct pending_auth_data;

struct smbd_server_connection {
	const struct tsocket_address *local_address;
	const struct tsocket_address *remote_address;
	struct {
		bool got_session;
	} nbt;
	bool using_smb2;
	struct {
		struct fd_event *fde;

		struct {
			/*
			 * fd for the fcntl lock mutexing access to smbd_server_fd
			 */
			int socket_lock_fd;

			/*
			 * fd for the trusted pipe from
			 * echo handler child
			 */
			int trusted_fd;

			/*
			 * fde for the trusted_fd
			 */
			struct fd_event *trusted_fde;

			/*
			 * Reference count for the fcntl lock to
			 * allow recursive locks.
			 */
			int ref_count;
		} echo_handler;

		uint64_t num_requests;
		struct {
			bool encrypted_passwords;
			bool spnego;
			struct auth_context *auth_context;
			bool done;
			/*
			 * Size of the data we can receive. Set by us.
			 * Can be modified by the max xmit parameter.
			 */
			int max_recv;
		} negprot;

		struct {
			bool done_sesssetup;
			/*
			 * Size of data we can send to client. Set
			 *  by the client for all protocols above CORE.
			 *  Set by us for CORE protocol.
			 */
			int max_send;
			uint16_t last_session_tag;

			/* users from session setup */
			char *session_userlist;
			/* workgroup from session setup. */
			char *session_workgroup;
			/*
			 * this holds info on user ids that are already
			 * validated for this VC
			 */
			user_struct *validated_users;
			uint16_t next_vuid;
			int num_validated_vuids;
		} sessions;
		struct {
			connection_struct *Connections;
			/* number of open connections */
			struct bitmap *bmap;
			int num_open;
		} tcons;
		struct smb_signing_state *signing_state;
		/* List to store partial SPNEGO auth fragments. */
		struct pending_auth_data *pd_list;

		struct notify_mid_map *notify_mid_maps;

		struct {
			struct bitmap *dptr_bmap;
			struct dptr_struct *dirptrs;
			int dirhandles_open;
		} searches;
		struct {
			/* dlink list we store pending lock records on. */
			struct blocking_lock_record *blocking_lock_queue;
			/* dlink list we move cancelled lock records onto. */
			struct blocking_lock_record *blocking_lock_cancelled_queue;

			/* The event that makes us process our blocking lock queue */
			struct timed_event *brl_timeout;

			bool blocking_lock_unlock_state;
			bool blocking_lock_cancel_state;
		} locks;
	} smb1;
	struct {
		struct tevent_context *event_ctx;
		struct tevent_queue *recv_queue;
		struct tevent_queue *send_queue;
		struct tstream_context *stream;
		struct {
			/* an id tree used to allocate vuids */
			/* this holds info on session vuids that are already
			 * validated for this VC */
			struct idr_context *idtree;

			/* this is the limit of vuid values for this connection */
			uint64_t limit;

			struct smbd_smb2_session *list;
		} sessions;
		struct {
			/* The event that makes us process our blocking lock queue */
			struct timed_event *brl_timeout;
			bool blocking_lock_unlock_state;
		} locks;
		struct smbd_smb2_request *requests;
		uint64_t credits_granted;
	} smb2;
};

extern struct smbd_server_connection *smbd_server_conn;

void smbd_init_globals(void);