dns: Use new DNS debugclass in DNS server
[kai/samba.git] / source3 / smbd / globals.h
1 /*
2    Unix SMB/Netbios implementation.
3    smbd globals
4    Copyright (C) Stefan Metzmacher 2009
5    Copyright (C) Jeremy Allison 2010
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 "system/select.h"
22 #include "librpc/gen_ndr/smbXsrv.h"
23
24 extern int aio_pending_size;
25 extern int outstanding_aio_calls;
26
27 #ifdef USE_DMAPI
28 struct smbd_dmapi_context;
29 extern struct smbd_dmapi_context *dmapi_ctx;
30 #endif
31
32 extern bool dfree_broken;
33
34 /* how many write cache buffers have been allocated */
35 extern unsigned int allocated_write_caches;
36
37 /* A singleton cache to speed up searching by dev/inode. */
38 struct fsp_singleton_cache {
39         files_struct *fsp;
40         struct file_id id;
41 };
42
43 extern const struct mangle_fns *mangle_fns;
44
45 extern unsigned char *chartest;
46 struct tdb_context;
47 extern struct tdb_context *tdb_mangled_cache;
48
49 /*
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.
53 */
54 extern unsigned mangle_prefix;
55
56 struct msg_state;
57
58 extern bool logged_ioctl_message;
59
60 extern int trans_num;
61
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;
65
66 /****************************************************************************
67  structure to hold a linked list of queued messages.
68  for processing.
69 ****************************************************************************/
70 extern uint32_t common_flags2;
71
72 extern struct smb_trans_enc_state *partial_srv_trans_enc_ctx;
73 extern struct smb_trans_enc_state *srv_trans_enc_ctx;
74
75 struct sec_ctx {
76         struct security_unix_token ut;
77         struct security_token *token;
78 };
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;
85
86 extern connection_struct *last_conn;
87 extern uint16_t last_flags;
88
89 extern uint32_t global_client_caps;
90
91 extern uint16_t fnf_handle;
92
93 struct conn_ctx {
94         connection_struct *conn;
95         uint64_t vuid;
96 };
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;
100
101 struct vfs_init_function_entry;
102 extern struct vfs_init_function_entry *backends;
103 extern char *sparse_buf;
104 extern char *LastDir;
105
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;
110
111 struct tstream_context;
112 struct smbd_smb2_request;
113
114 DATA_BLOB negprot_spnego(TALLOC_CTX *ctx, struct smbd_server_connection *sconn);
115
116 void smbd_lock_socket(struct smbd_server_connection *sconn);
117 void smbd_unlock_socket(struct smbd_server_connection *sconn);
118
119 NTSTATUS smbd_do_locking(struct smb_request *req,
120                          files_struct *fsp,
121                          uint8_t type,
122                          int32_t timeout,
123                          uint16_t num_ulocks,
124                          struct smbd_lock_element *ulocks,
125                          uint16_t num_locks,
126                          struct smbd_lock_element *locks,
127                          bool *async);
128
129 NTSTATUS smbd_do_qfilepathinfo(connection_struct *conn,
130                                TALLOC_CTX *mem_ctx,
131                                uint16_t info_level,
132                                files_struct *fsp,
133                                struct smb_filename *smb_fname,
134                                bool delete_pending,
135                                struct timespec write_time_ts,
136                                struct ea_list *ea_list,
137                                int lock_data_count,
138                                char *lock_data,
139                                uint16_t flags2,
140                                unsigned int max_data_bytes,
141                                char **ppdata,
142                                unsigned int *pdata_size);
143
144 NTSTATUS smbd_do_setfilepathinfo(connection_struct *conn,
145                                 struct smb_request *req,
146                                 TALLOC_CTX *mem_ctx,
147                                 uint16_t info_level,
148                                 files_struct *fsp,
149                                 struct smb_filename *smb_fname,
150                                 char **ppdata, int total_data,
151                                 int *ret_data_size);
152
153 NTSTATUS smbd_do_qfsinfo(connection_struct *conn,
154                          TALLOC_CTX *mem_ctx,
155                          uint16_t info_level,
156                          uint16_t flags2,
157                          unsigned int max_data_bytes,
158                          char **ppdata,
159                          int *ret_data_len);
160
161 bool smbd_dirptr_get_entry(TALLOC_CTX *ctx,
162                            struct dptr_struct *dirptr,
163                            const char *mask,
164                            uint32_t dirtype,
165                            bool dont_descend,
166                            bool ask_sharemode,
167                            bool (*match_fn)(TALLOC_CTX *ctx,
168                                             void *private_data,
169                                             const char *dname,
170                                             const char *mask,
171                                             char **_fname),
172                            bool (*mode_fn)(TALLOC_CTX *ctx,
173                                            void *private_data,
174                                            struct smb_filename *smb_fname,
175                                            uint32_t *_mode),
176                            void *private_data,
177                            char **_fname,
178                            struct smb_filename **_smb_fname,
179                            uint32_t *_mode,
180                            long *_prev_offset);
181
182 bool smbd_dirptr_lanman2_entry(TALLOC_CTX *ctx,
183                                connection_struct *conn,
184                                struct dptr_struct *dirptr,
185                                uint16 flags2,
186                                const char *path_mask,
187                                uint32 dirtype,
188                                int info_level,
189                                int requires_resume_key,
190                                bool dont_descend,
191                                bool ask_sharemode,
192                                uint8_t align,
193                                bool do_pad,
194                                char **ppdata,
195                                char *base_data,
196                                char *end_data,
197                                int space_remaining,
198                                bool *out_of_space,
199                                bool *got_exact_match,
200                                int *_last_entry_off,
201                                struct ea_list *name_list);
202
203 NTSTATUS smbd_calculate_access_mask(connection_struct *conn,
204                                     const struct smb_filename *smb_fname,
205                                     bool use_privs,
206                                     uint32_t access_mask,
207                                     uint32_t *access_mask_out);
208
209 void smbd_notify_cancel_by_smbreq(const struct smb_request *smbreq);
210
211 void smbd_server_connection_terminate_ex(struct smbd_server_connection *sconn,
212                                          const char *reason,
213                                          const char *location);
214 #define smbd_server_connection_terminate(sconn, reason) \
215         smbd_server_connection_terminate_ex(sconn, reason, __location__)
216
217 const char *smb2_opcode_name(uint16_t opcode);
218 bool smbd_is_smb2_header(const uint8_t *inbuf, size_t size);
219
220 void reply_smb2002(struct smb_request *req, uint16_t choice);
221 void reply_smb20ff(struct smb_request *req, uint16_t choice);
222 void smbd_smb2_first_negprot(struct smbd_server_connection *sconn,
223                              uint8_t *inbuf, size_t size);
224
225 NTSTATUS smbd_smb2_request_error_ex(struct smbd_smb2_request *req,
226                                     NTSTATUS status,
227                                     DATA_BLOB *info,
228                                     const char *location);
229 #define smbd_smb2_request_error(req, status) \
230         smbd_smb2_request_error_ex(req, status, NULL, __location__)
231 NTSTATUS smbd_smb2_request_done_ex(struct smbd_smb2_request *req,
232                                    NTSTATUS status,
233                                    DATA_BLOB body, DATA_BLOB *dyn,
234                                    const char *location);
235 #define smbd_smb2_request_done(req, body, dyn) \
236         smbd_smb2_request_done_ex(req, NT_STATUS_OK, body, dyn, __location__)
237
238 NTSTATUS smbd_smb2_send_oplock_break(struct smbd_server_connection *sconn,
239                                      struct smbXsrv_session *session,
240                                      struct smbXsrv_tcon *tcon,
241                                      struct smbXsrv_open *op,
242                                      uint8_t oplock_level);
243
244 NTSTATUS smbd_smb2_request_pending_queue(struct smbd_smb2_request *req,
245                                          struct tevent_req *subreq,
246                                          uint32_t defer_time);
247
248 struct smb_request *smbd_smb2_fake_smb_request(struct smbd_smb2_request *req);
249 void remove_smb2_chained_fsp(files_struct *fsp);
250
251 NTSTATUS smbd_smb2_request_verify_creditcharge(struct smbd_smb2_request *req,
252                                                uint32_t data_length);
253
254 NTSTATUS smbd_smb2_request_verify_sizes(struct smbd_smb2_request *req,
255                                         size_t expected_body_size);
256
257 NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req);
258 NTSTATUS smbd_smb2_request_process_sesssetup(struct smbd_smb2_request *req);
259 NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req);
260 NTSTATUS smbd_smb2_request_process_tcon(struct smbd_smb2_request *req);
261 NTSTATUS smbd_smb2_request_process_tdis(struct smbd_smb2_request *req);
262 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req);
263 NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req);
264 NTSTATUS smbd_smb2_request_process_flush(struct smbd_smb2_request *req);
265 NTSTATUS smbd_smb2_request_process_read(struct smbd_smb2_request *req);
266 NTSTATUS smb2_read_complete(struct tevent_req *req, ssize_t nread, int err);
267 NTSTATUS smbd_smb2_request_process_write(struct smbd_smb2_request *req);
268 NTSTATUS smb2_write_complete(struct tevent_req *req, ssize_t nwritten, int err);
269 NTSTATUS smb2_write_complete_nosync(struct tevent_req *req, ssize_t nwritten,
270                                     int err);
271 NTSTATUS smbd_smb2_request_process_lock(struct smbd_smb2_request *req);
272 NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req);
273 NTSTATUS smbd_smb2_request_process_keepalive(struct smbd_smb2_request *req);
274 NTSTATUS smbd_smb2_request_process_find(struct smbd_smb2_request *req);
275 NTSTATUS smbd_smb2_request_process_notify(struct smbd_smb2_request *req);
276 NTSTATUS smbd_smb2_request_process_getinfo(struct smbd_smb2_request *req);
277 NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req);
278 NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req);
279 NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req);
280 void smbd_smb2_request_dispatch_immediate(struct tevent_context *ctx,
281                                 struct tevent_immediate *im,
282                                 void *private_data);
283
284 /* SMB1 -> SMB2 glue. */
285 void send_break_message_smb2(files_struct *fsp, int level);
286 struct blocking_lock_record *get_pending_smb2req_blr(struct smbd_smb2_request *smb2req);
287 bool push_blocking_lock_request_smb2( struct byte_range_lock *br_lck,
288                                 struct smb_request *req,
289                                 files_struct *fsp,
290                                 int lock_timeout,
291                                 int lock_num,
292                                 uint64_t smblctx,
293                                 enum brl_type lock_type,
294                                 enum brl_flavour lock_flav,
295                                 uint64_t offset,
296                                 uint64_t count,
297                                 uint64_t blocking_smblctx);
298 void process_blocking_lock_queue_smb2(
299         struct smbd_server_connection *sconn, struct timeval tv_curr);
300 void cancel_pending_lock_requests_by_fid_smb2(files_struct *fsp,
301                         struct byte_range_lock *br_lck,
302                         enum file_close_type close_type);
303 /* From smbd/smb2_create.c */
304 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level);
305 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
306                         struct timeval *p_request_time,
307                         void **pp_state);
308 bool open_was_deferred_smb2(struct smbd_server_connection *sconn,
309                             uint64_t mid);
310 void remove_deferred_open_message_smb2(
311         struct smbd_server_connection *sconn, uint64_t mid);
312 bool schedule_deferred_open_message_smb2(
313         struct smbd_server_connection *sconn, uint64_t mid);
314 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
315                         struct timeval request_time,
316                         struct timeval timeout,
317                         struct file_id id,
318                         char *private_data,
319                         size_t priv_len);
320
321 struct smbXsrv_connection {
322         struct smbd_server_connection *sconn;
323
324         const struct tsocket_address *local_address;
325         const struct tsocket_address *remote_address;
326         const char *remote_hostname;
327
328         struct tevent_context *ev_ctx;
329         struct messaging_context *msg_ctx;
330
331         enum protocol_types protocol;
332
333         struct {
334                 struct {
335                         uint32_t capabilities;
336                         struct GUID guid;
337                         uint16_t security_mode;
338                         uint16_t num_dialects;
339                         uint16_t *dialects;
340                 } client;
341                 struct {
342                         uint32_t capabilities;
343                         struct GUID guid;
344                         uint16_t security_mode;
345                         uint16_t dialect;
346                         uint32_t max_trans;
347                         uint32_t max_read;
348                         uint32_t max_write;
349                 } server;
350         } smb2;
351
352         struct msg_state *msg_state;
353
354         /*
355          * Link into libasys for asynchronous operations
356          */
357         struct asys_context *asys_ctx;
358         struct tevent_fd *asys_fde;
359
360         uint64_t smbd_idle_profstamp;
361
362         /*
363          * this session_table is used for SMB1 and SMB2,
364          */
365         struct smbXsrv_session_table *session_table;
366         /*
367          * this tcon_table is only used for SMB1.
368          */
369         struct smbXsrv_tcon_table *tcon_table;
370         /*
371          * this open_table is used for SMB1 and SMB2,
372          * because we have a global sconn->real_max_open_files
373          * limit.
374          */
375         struct smbXsrv_open_table *open_table;
376 };
377
378 NTSTATUS smbXsrv_version_global_init(const struct server_id *server_id);
379 uint32_t smbXsrv_version_global_current(void);
380
381 NTSTATUS smbXsrv_connection_init_tables(struct smbXsrv_connection *conn,
382                                         enum protocol_types protocol);
383
384 NTSTATUS smbXsrv_session_global_init(void);
385 NTSTATUS smbXsrv_session_create(struct smbXsrv_connection *conn,
386                                 NTTIME now,
387                                 struct smbXsrv_session **_session);
388 NTSTATUS smbXsrv_session_update(struct smbXsrv_session *session);
389 NTSTATUS smbXsrv_session_logoff(struct smbXsrv_session *session);
390 NTSTATUS smbXsrv_session_logoff_all(struct smbXsrv_connection *conn);
391 NTSTATUS smb1srv_session_table_init(struct smbXsrv_connection *conn);
392 NTSTATUS smb1srv_session_lookup(struct smbXsrv_connection *conn,
393                                 uint16_t vuid, NTTIME now,
394                                 struct smbXsrv_session **session);
395 NTSTATUS smb2srv_session_table_init(struct smbXsrv_connection *conn);
396 NTSTATUS smb2srv_session_lookup(struct smbXsrv_connection *conn,
397                                 uint64_t session_id, NTTIME now,
398                                 struct smbXsrv_session **session);
399 struct smbXsrv_session_global0;
400 NTSTATUS smbXsrv_session_global_traverse(
401                         int (*fn)(struct smbXsrv_session_global0 *, void *),
402                         void *private_data);
403 struct tevent_req *smb2srv_session_close_previous_send(TALLOC_CTX *mem_ctx,
404                                         struct tevent_context *ev,
405                                         struct smbXsrv_connection *conn,
406                                         struct auth_session_info *session_info,
407                                         uint64_t previous_session_id,
408                                         uint64_t current_session_id);
409 NTSTATUS smb2srv_session_close_previous_recv(struct tevent_req *req);
410
411 NTSTATUS smbXsrv_tcon_global_init(void);
412 NTSTATUS smbXsrv_tcon_update(struct smbXsrv_tcon *tcon);
413 NTSTATUS smbXsrv_tcon_disconnect(struct smbXsrv_tcon *tcon, uint64_t vuid);
414 NTSTATUS smb1srv_tcon_table_init(struct smbXsrv_connection *conn);
415 NTSTATUS smb1srv_tcon_create(struct smbXsrv_connection *conn,
416                              NTTIME now,
417                              struct smbXsrv_tcon **_tcon);
418 NTSTATUS smb1srv_tcon_lookup(struct smbXsrv_connection *conn,
419                              uint16_t tree_id, NTTIME now,
420                              struct smbXsrv_tcon **tcon);
421 NTSTATUS smb1srv_tcon_disconnect_all(struct smbXsrv_connection *conn);
422 NTSTATUS smb2srv_tcon_table_init(struct smbXsrv_session *session);
423 NTSTATUS smb2srv_tcon_create(struct smbXsrv_session *session,
424                              NTTIME now,
425                              struct smbXsrv_tcon **_tcon);
426 NTSTATUS smb2srv_tcon_lookup(struct smbXsrv_session *session,
427                              uint32_t tree_id, NTTIME now,
428                              struct smbXsrv_tcon **tcon);
429 NTSTATUS smb2srv_tcon_disconnect_all(struct smbXsrv_session *session);
430 struct smbXsrv_tcon_global0;
431 NTSTATUS smbXsrv_tcon_global_traverse(
432                         int (*fn)(struct smbXsrv_tcon_global0 *, void *),
433                         void *private_data);
434
435 NTSTATUS smbXsrv_open_global_init(void);
436 NTSTATUS smbXsrv_open_create(struct smbXsrv_connection *conn,
437                              struct auth_session_info *session_info,
438                              NTTIME now,
439                              struct smbXsrv_open **_open);
440 uint32_t smbXsrv_open_hash(struct smbXsrv_open *_open);
441 NTSTATUS smbXsrv_open_update(struct smbXsrv_open *_open);
442 NTSTATUS smbXsrv_open_close(struct smbXsrv_open *op, NTTIME now);
443 NTSTATUS smb1srv_open_table_init(struct smbXsrv_connection *conn);
444 NTSTATUS smb1srv_open_lookup(struct smbXsrv_connection *conn,
445                              uint16_t fnum, NTTIME now,
446                              struct smbXsrv_open **_open);
447 NTSTATUS smb2srv_open_table_init(struct smbXsrv_connection *conn);
448 NTSTATUS smb2srv_open_lookup(struct smbXsrv_connection *conn,
449                              uint64_t persistent_id,
450                              uint64_t volatile_id,
451                              NTTIME now,
452                              struct smbXsrv_open **_open);
453 NTSTATUS smb2srv_open_recreate(struct smbXsrv_connection *conn,
454                                struct auth_session_info *session_info,
455                                uint64_t persistent_id,
456                                struct GUID create_guid,
457                                NTTIME now,
458                                struct smbXsrv_open **_open);
459
460 struct smbd_smb2_request {
461         struct smbd_smb2_request *prev, *next;
462
463         struct smbd_server_connection *sconn;
464
465         /* the session the request operates on, maybe NULL */
466         struct smbXsrv_session *session;
467         uint64_t last_session_id;
468
469         /* the tcon the request operates on, maybe NULL */
470         struct smbXsrv_tcon *tcon;
471         uint32_t last_tid;
472
473         int current_idx;
474         bool do_signing;
475         bool do_encryption;
476         struct tevent_timer *async_te;
477         bool compound_related;
478
479         /*
480          * the encryption key for the whole
481          * compound chain
482          */
483         DATA_BLOB first_key;
484         /*
485          * the signing key for the last
486          * request/response of a compound chain
487          */
488         DATA_BLOB last_key;
489
490         struct timeval request_time;
491
492         /* fake smb1 request. */
493         struct smb_request *smb1req;
494         struct files_struct *compat_chain_fsp;
495
496         /*
497          * The sub request for async backend calls.
498          * This is used for SMB2 Cancel.
499          */
500         struct tevent_req *subreq;
501
502 #define SMBD_SMB2_TF_IOV_OFS 0
503 #define SMBD_SMB2_HDR_IOV_OFS 1
504 #define SMBD_SMB2_BODY_IOV_OFS 2
505 #define SMBD_SMB2_DYN_IOV_OFS 3
506
507 #define SMBD_SMB2_NUM_IOV_PER_REQ 4
508
509 #define SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,ofs) \
510         (&req->dir.vector[(idx)+(ofs)])
511
512 #define SMBD_SMB2_IDX_TF_IOV(req,dir,idx) \
513         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_TF_IOV_OFS)
514 #define SMBD_SMB2_IDX_HDR_IOV(req,dir,idx) \
515         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_HDR_IOV_OFS)
516 #define SMBD_SMB2_IDX_BODY_IOV(req,dir,idx) \
517         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_BODY_IOV_OFS)
518 #define SMBD_SMB2_IDX_DYN_IOV(req,dir,idx) \
519         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_DYN_IOV_OFS)
520
521 #define SMBD_SMB2_IN_TF_IOV(req)    SMBD_SMB2_IDX_TF_IOV(req,in,req->current_idx)
522 #define SMBD_SMB2_IN_TF_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_TF_IOV(req)->iov_base)
523 #define SMBD_SMB2_IN_HDR_IOV(req)    SMBD_SMB2_IDX_HDR_IOV(req,in,req->current_idx)
524 #define SMBD_SMB2_IN_HDR_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_HDR_IOV(req)->iov_base)
525 #define SMBD_SMB2_IN_BODY_IOV(req)   SMBD_SMB2_IDX_BODY_IOV(req,in,req->current_idx)
526 #define SMBD_SMB2_IN_BODY_PTR(req)   (uint8_t *)(SMBD_SMB2_IN_BODY_IOV(req)->iov_base)
527 #define SMBD_SMB2_IN_BODY_LEN(req)   (SMBD_SMB2_IN_BODY_IOV(req)->iov_len)
528 #define SMBD_SMB2_IN_DYN_IOV(req)    SMBD_SMB2_IDX_DYN_IOV(req,in,req->current_idx)
529 #define SMBD_SMB2_IN_DYN_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_DYN_IOV(req)->iov_base)
530 #define SMBD_SMB2_IN_DYN_LEN(req)    (SMBD_SMB2_IN_DYN_IOV(req)->iov_len)
531
532 #define SMBD_SMB2_OUT_TF_IOV(req)   SMBD_SMB2_IDX_TF_IOV(req,out,req->current_idx)
533 #define SMBD_SMB2_OUT_TF_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_TF_IOV(req)->iov_base)
534 #define SMBD_SMB2_OUT_HDR_IOV(req)   SMBD_SMB2_IDX_HDR_IOV(req,out,req->current_idx)
535 #define SMBD_SMB2_OUT_HDR_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_HDR_IOV(req)->iov_base)
536 #define SMBD_SMB2_OUT_BODY_IOV(req)  SMBD_SMB2_IDX_BODY_IOV(req,out,req->current_idx)
537 #define SMBD_SMB2_OUT_BODY_PTR(req)  (uint8_t *)(SMBD_SMB2_OUT_BODY_IOV(req)->iov_base)
538 #define SMBD_SMB2_OUT_BODY_LEN(req)  (SMBD_SMB2_OUT_BODY_IOV(req)->iov_len)
539 #define SMBD_SMB2_OUT_DYN_IOV(req)   SMBD_SMB2_IDX_DYN_IOV(req,out,req->current_idx)
540 #define SMBD_SMB2_OUT_DYN_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_DYN_IOV(req)->iov_base)
541 #define SMBD_SMB2_OUT_DYN_LEN(req)   (SMBD_SMB2_OUT_DYN_IOV(req)->iov_len)
542
543         struct {
544                 /*
545                  * vector[0] TRANSPORT HEADER (empty)
546                  * .
547                  * vector[1] SMB2_TRANSFORM (optional)
548                  * vector[2] SMB2
549                  * vector[3] fixed body
550                  * vector[4] dynamic body
551                  * .
552                  * .
553                  * .
554                  * vector[5] SMB2_TRANSFORM (optional)
555                  * vector[6] SMB2
556                  * vector[7] fixed body
557                  * vector[8] dynamic body
558                  * .
559                  * .
560                  * .
561                  */
562                 struct iovec *vector;
563                 int vector_count;
564         } in;
565         struct {
566                 /* the NBT header is not allocated */
567                 uint8_t nbt_hdr[4];
568                 /*
569                  * vector[0] TRANSPORT HEADER
570                  * .
571                  * vector[1] SMB2_TRANSFORM (optional)
572                  * vector[2] SMB2
573                  * vector[3] fixed body
574                  * vector[4] dynamic body
575                  * .
576                  * .
577                  * .
578                  * vector[5] SMB2_TRANSFORM (empty)
579                  * vector[6] SMB2
580                  * vector[7] fixed body
581                  * vector[8] dynamic body
582                  * .
583                  * .
584                  * .
585                  */
586                 struct iovec *vector;
587                 int vector_count;
588         } out;
589 };
590
591 struct smbd_server_connection;
592 struct user_struct;
593
594 struct pending_message_list;
595 struct pending_auth_data;
596
597 struct user_struct {
598         struct user_struct *next, *prev;
599         uint64_t vuid; /* Tag for this entry. */
600
601         char *session_keystr; /* used by utmp and pam session code.
602                                  TDB key string */
603         int homes_snum;
604
605         struct auth_session_info *session_info;
606
607         struct smbXsrv_session *session;
608 };
609
610 struct smbd_server_connection {
611         int sock;
612         const struct tsocket_address *local_address;
613         const struct tsocket_address *remote_address;
614         const char *remote_hostname;
615         struct tevent_context *ev_ctx;
616         struct messaging_context *msg_ctx;
617         struct sys_notify_context *sys_notify_ctx;
618         struct notify_context *notify_ctx;
619         struct {
620                 bool got_session;
621         } nbt;
622         bool using_smb2;
623         int trans_num;
624
625         size_t num_users;
626         struct user_struct *users;
627
628         size_t num_connections;
629         struct connection_struct *connections;
630
631         size_t num_files;
632         struct files_struct *files;
633
634         int real_max_open_files;
635         struct fsp_singleton_cache fsp_fi_cache;
636
637         struct pending_message_list *deferred_open_queue;
638
639
640         /* open directory handles. */
641         struct {
642                 struct bitmap *dptr_bmap;
643                 struct dptr_struct *dirptrs;
644                 int dirhandles_open;
645         } searches;
646
647         uint64_t num_requests;
648
649         /* Current number of oplocks we have outstanding. */
650         struct {
651                 int32_t exclusive_open;
652                 int32_t level_II_open;
653                 struct kernel_oplocks *kernel_ops;
654         } oplocks;
655
656         struct {
657                 struct fd_event *fde;
658
659                 struct {
660                         /*
661                          * fd for the fcntl lock mutexing access to our sock
662                          */
663                         int socket_lock_fd;
664
665                         /*
666                          * fd for the trusted pipe from
667                          * echo handler child
668                          */
669                         int trusted_fd;
670
671                         /*
672                          * fde for the trusted_fd
673                          */
674                         struct fd_event *trusted_fde;
675
676                         /*
677                          * Reference count for the fcntl lock to
678                          * allow recursive locks.
679                          */
680                         int ref_count;
681                 } echo_handler;
682
683                 struct {
684                         bool encrypted_passwords;
685                         bool spnego;
686                         struct auth4_context *auth_context;
687                         bool done;
688                         /*
689                          * Size of the data we can receive. Set by us.
690                          * Can be modified by the max xmit parameter.
691                          */
692                         int max_recv;
693                 } negprot;
694
695                 struct {
696                         uint16_t client_major;
697                         uint16_t client_minor;
698                         uint32_t client_cap_low;
699                         uint32_t client_cap_high;
700                 } unix_info;
701
702                 struct {
703                         bool done_sesssetup;
704                         /*
705                          * Size of data we can send to client. Set
706                          *  by the client for all protocols above CORE.
707                          *  Set by us for CORE protocol.
708                          */
709                         int max_send;
710                         uint64_t last_session_tag;
711                 } sessions;
712                 struct smb_signing_state *signing_state;
713
714                 struct notify_mid_map *notify_mid_maps;
715
716                 struct {
717                         /* dlink list we store pending lock records on. */
718                         struct blocking_lock_record *blocking_lock_queue;
719                         /* dlink list we move cancelled lock records onto. */
720                         struct blocking_lock_record *blocking_lock_cancelled_queue;
721
722                         /* The event that makes us process our blocking lock queue */
723                         struct timed_event *brl_timeout;
724
725                         bool blocking_lock_unlock_state;
726                         bool blocking_lock_cancel_state;
727                 } locks;
728         } smb1;
729         struct {
730                 struct tevent_queue *recv_queue;
731                 struct tevent_queue *send_queue;
732                 struct tstream_context *stream;
733                 bool negprot_2ff;
734                 struct {
735                         /* The event that makes us process our blocking lock queue */
736                         struct timed_event *brl_timeout;
737                         bool blocking_lock_unlock_state;
738                 } locks;
739                 struct smbd_smb2_request *requests;
740                 /*
741                  * seqnum_low is the lowest sequence number
742                  * we will accept.
743                  */
744                 uint64_t seqnum_low;
745                 /*
746                  * seqnum_range is the range of credits we have
747                  * granted from the sequence windows starting
748                  * at seqnum_low.
749                  *
750                  * This gets incremented when new credits are
751                  * granted and gets decremented when the
752                  * lowest sequence number is consumed
753                  * (when seqnum_low gets incremented).
754                  */
755                 uint16_t seqnum_range;
756                 /*
757                  * credits_grantedThe number of credits we have currently granted
758                  * to the client.
759                  *
760                  * This gets incremented when new credits are
761                  * granted and gets decremented when any credit
762                  * is comsumed.
763                  *
764                  * Note: the decrementing is different compared
765                  *       to seqnum_range.
766                  */
767                 uint16_t credits_granted;
768                 /*
769                  * The maximum number of credits we will ever
770                  * grant to the client.
771                  *
772                  * Typically we will only grant 1/16th of
773                  * max_credits.
774                  *
775                  * This is the "server max credits" parameter.
776                  */
777                 uint16_t max_credits;
778                 /*
779                  * a bitmap of size max_credits
780                  */
781                 struct bitmap *credits_bitmap;
782                 bool supports_multicredit;
783                 uint32_t max_trans;
784                 uint32_t max_read;
785                 uint32_t max_write;
786                 bool compound_related_in_progress;
787         } smb2;
788
789         struct smbXsrv_connection *conn;
790 };
791
792 extern struct smbXsrv_connection *global_smbXsrv_connection;
793
794 void smbd_init_globals(void);