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                                     uint32_t access_mask,
 206                                     uint32_t *access_mask_out);
 207
 208 void smbd_notify_cancel_by_smbreq(const struct smb_request *smbreq);
 209
 210 void smbd_server_connection_terminate_ex(struct smbd_server_connection *sconn,
 211                                          const char *reason,
 212                                          const char *location);
 213 #define smbd_server_connection_terminate(sconn, reason) \
 214         smbd_server_connection_terminate_ex(sconn, reason, __location__)
 215
 216 const char *smb2_opcode_name(uint16_t opcode);
 217 bool smbd_is_smb2_header(const uint8_t *inbuf, size_t size);
 218
 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                              uint8_t *inbuf, size_t size);
 223
 224 NTSTATUS smbd_smb2_request_error_ex(struct smbd_smb2_request *req,
 225                                     NTSTATUS status,
 226                                     DATA_BLOB *info,
 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,
 231                                    NTSTATUS status,
 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__)
 236
 237 NTSTATUS smbd_smb2_send_oplock_break(struct smbd_server_connection *sconn,
 238                                      struct smbXsrv_session *session,
 239                                      struct smbXsrv_tcon *tcon,
 240                                      struct smbXsrv_open *op,
 241                                      uint8_t oplock_level);
 242
 243 NTSTATUS smbd_smb2_request_pending_queue(struct smbd_smb2_request *req,
 244                                          struct tevent_req *subreq,
 245                                          uint32_t defer_time);
 246
 247 struct smb_request *smbd_smb2_fake_smb_request(struct smbd_smb2_request *req);
 248 void remove_smb2_chained_fsp(files_struct *fsp);
 249
 250 NTSTATUS smbd_smb2_request_verify_creditcharge(struct smbd_smb2_request *req,
 251                                                uint32_t data_length);
 252
 253 NTSTATUS smbd_smb2_request_verify_sizes(struct smbd_smb2_request *req,
 254                                         size_t expected_body_size);
 255
 256 NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req);
 257 NTSTATUS smbd_smb2_request_process_sesssetup(struct smbd_smb2_request *req);
 258 NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req);
 259 NTSTATUS smbd_smb2_request_process_tcon(struct smbd_smb2_request *req);
 260 NTSTATUS smbd_smb2_request_process_tdis(struct smbd_smb2_request *req);
 261 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req);
 262 NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req);
 263 NTSTATUS smbd_smb2_request_process_flush(struct smbd_smb2_request *req);
 264 NTSTATUS smbd_smb2_request_process_read(struct smbd_smb2_request *req);
 265 NTSTATUS smb2_read_complete(struct tevent_req *req, ssize_t nread, int err);
 266 NTSTATUS smbd_smb2_request_process_write(struct smbd_smb2_request *req);
 267 NTSTATUS smb2_write_complete(struct tevent_req *req, ssize_t nwritten, int err);
 268 NTSTATUS smb2_write_complete_nosync(struct tevent_req *req, ssize_t nwritten,
 269                                     int err);
 270 NTSTATUS smbd_smb2_request_process_lock(struct smbd_smb2_request *req);
 271 NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req);
 272 NTSTATUS smbd_smb2_request_process_keepalive(struct smbd_smb2_request *req);
 273 NTSTATUS smbd_smb2_request_process_find(struct smbd_smb2_request *req);
 274 NTSTATUS smbd_smb2_request_process_notify(struct smbd_smb2_request *req);
 275 NTSTATUS smbd_smb2_request_process_getinfo(struct smbd_smb2_request *req);
 276 NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req);
 277 NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req);
 278 NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req);
 279 void smbd_smb2_request_dispatch_immediate(struct tevent_context *ctx,
 280                                 struct tevent_immediate *im,
 281                                 void *private_data);
 282
 283 /* SMB1 -> SMB2 glue. */
 284 void send_break_message_smb2(files_struct *fsp, int level);
 285 struct blocking_lock_record *get_pending_smb2req_blr(struct smbd_smb2_request *smb2req);
 286 bool push_blocking_lock_request_smb2( struct byte_range_lock *br_lck,
 287                                 struct smb_request *req,
 288                                 files_struct *fsp,
 289                                 int lock_timeout,
 290                                 int lock_num,
 291                                 uint64_t smblctx,
 292                                 enum brl_type lock_type,
 293                                 enum brl_flavour lock_flav,
 294                                 uint64_t offset,
 295                                 uint64_t count,
 296                                 uint64_t blocking_smblctx);
 297 void process_blocking_lock_queue_smb2(
 298         struct smbd_server_connection *sconn, struct timeval tv_curr);
 299 void cancel_pending_lock_requests_by_fid_smb2(files_struct *fsp,
 300                         struct byte_range_lock *br_lck,
 301                         enum file_close_type close_type);
 302 /* From smbd/smb2_create.c */
 303 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level);
 304 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
 305                         struct timeval *p_request_time,
 306                         void **pp_state);
 307 bool open_was_deferred_smb2(struct smbd_server_connection *sconn,
 308                             uint64_t mid);
 309 void remove_deferred_open_message_smb2(
 310         struct smbd_server_connection *sconn, uint64_t mid);
 311 bool schedule_deferred_open_message_smb2(
 312         struct smbd_server_connection *sconn, uint64_t mid);
 313 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
 314                         struct timeval request_time,
 315                         struct timeval timeout,
 316                         struct file_id id,
 317                         char *private_data,
 318                         size_t priv_len);
 319
 320 struct smbXsrv_connection {
 321         struct smbd_server_connection *sconn;
 322
 323         const struct tsocket_address *local_address;
 324         const struct tsocket_address *remote_address;
 325         const char *remote_hostname;
 326
 327         struct tevent_context *ev_ctx;
 328         struct messaging_context *msg_ctx;
 329
 330         enum protocol_types protocol;
 331
 332         struct {
 333                 struct {
 334                         uint32_t capabilities;
 335                         struct GUID guid;
 336                         uint16_t security_mode;
 337                         uint16_t num_dialects;
 338                         uint16_t *dialects;
 339                 } client;
 340                 struct {
 341                         uint32_t capabilities;
 342                         struct GUID guid;
 343                         uint16_t security_mode;
 344                         uint16_t dialect;
 345                         uint32_t max_trans;
 346                         uint32_t max_read;
 347                         uint32_t max_write;
 348                 } server;
 349         } smb2;
 350
 351         struct msg_state *msg_state;
 352
 353         /*
 354          * Link into libasys for asynchronous operations
 355          */
 356         struct asys_context *asys_ctx;
 357         struct tevent_fd *asys_fde;
 358
 359         uint64_t smbd_idle_profstamp;
 360
 361         /*
 362          * this session_table is used for SMB1 and SMB2,
 363          */
 364         struct smbXsrv_session_table *session_table;
 365         /*
 366          * this tcon_table is only used for SMB1.
 367          */
 368         struct smbXsrv_tcon_table *tcon_table;
 369         /*
 370          * this open_table is used for SMB1 and SMB2,
 371          * because we have a global sconn->real_max_open_files
 372          * limit.
 373          */
 374         struct smbXsrv_open_table *open_table;
 375 };
 376
 377 NTSTATUS smbXsrv_version_global_init(const struct server_id *server_id);
 378 uint32_t smbXsrv_version_global_current(void);
 379
 380 NTSTATUS smbXsrv_connection_init_tables(struct smbXsrv_connection *conn,
 381                                         enum protocol_types protocol);
 382
 383 NTSTATUS smbXsrv_session_global_init(void);
 384 NTSTATUS smbXsrv_session_create(struct smbXsrv_connection *conn,
 385                                 NTTIME now,
 386                                 struct smbXsrv_session **_session);
 387 NTSTATUS smbXsrv_session_update(struct smbXsrv_session *session);
 388 NTSTATUS smbXsrv_session_logoff(struct smbXsrv_session *session);
 389 NTSTATUS smbXsrv_session_logoff_all(struct smbXsrv_connection *conn);
 390 NTSTATUS smb1srv_session_table_init(struct smbXsrv_connection *conn);
 391 NTSTATUS smb1srv_session_lookup(struct smbXsrv_connection *conn,
 392                                 uint16_t vuid, NTTIME now,
 393                                 struct smbXsrv_session **session);
 394 NTSTATUS smb2srv_session_table_init(struct smbXsrv_connection *conn);
 395 NTSTATUS smb2srv_session_lookup(struct smbXsrv_connection *conn,
 396                                 uint64_t session_id, NTTIME now,
 397                                 struct smbXsrv_session **session);
 398 struct tevent_req *smb2srv_session_close_previous_send(TALLOC_CTX *mem_ctx,
 399                                         struct tevent_context *ev,
 400                                         struct smbXsrv_connection *conn,
 401                                         struct auth_session_info *session_info,
 402                                         uint64_t previous_session_id,
 403                                         uint64_t current_session_id);
 404 NTSTATUS smb2srv_session_close_previous_recv(struct tevent_req *req);
 405
 406 NTSTATUS smbXsrv_tcon_global_init(void);
 407 NTSTATUS smbXsrv_tcon_update(struct smbXsrv_tcon *tcon);
 408 NTSTATUS smbXsrv_tcon_disconnect(struct smbXsrv_tcon *tcon, uint64_t vuid);
 409 NTSTATUS smb1srv_tcon_table_init(struct smbXsrv_connection *conn);
 410 NTSTATUS smb1srv_tcon_create(struct smbXsrv_connection *conn,
 411                              NTTIME now,
 412                              struct smbXsrv_tcon **_tcon);
 413 NTSTATUS smb1srv_tcon_lookup(struct smbXsrv_connection *conn,
 414                              uint16_t tree_id, NTTIME now,
 415                              struct smbXsrv_tcon **tcon);
 416 NTSTATUS smb1srv_tcon_disconnect_all(struct smbXsrv_connection *conn);
 417 NTSTATUS smb2srv_tcon_table_init(struct smbXsrv_session *session);
 418 NTSTATUS smb2srv_tcon_create(struct smbXsrv_session *session,
 419                              NTTIME now,
 420                              struct smbXsrv_tcon **_tcon);
 421 NTSTATUS smb2srv_tcon_lookup(struct smbXsrv_session *session,
 422                              uint32_t tree_id, NTTIME now,
 423                              struct smbXsrv_tcon **tcon);
 424 NTSTATUS smb2srv_tcon_disconnect_all(struct smbXsrv_session *session);
 425
 426 NTSTATUS smbXsrv_open_global_init(void);
 427 NTSTATUS smbXsrv_open_create(struct smbXsrv_connection *conn,
 428                              struct auth_session_info *session_info,
 429                              NTTIME now,
 430                              struct smbXsrv_open **_open);
 431 uint32_t smbXsrv_open_hash(struct smbXsrv_open *_open);
 432 NTSTATUS smbXsrv_open_update(struct smbXsrv_open *_open);
 433 NTSTATUS smbXsrv_open_close(struct smbXsrv_open *op, NTTIME now);
 434 NTSTATUS smb1srv_open_table_init(struct smbXsrv_connection *conn);
 435 NTSTATUS smb1srv_open_lookup(struct smbXsrv_connection *conn,
 436                              uint16_t fnum, NTTIME now,
 437                              struct smbXsrv_open **_open);
 438 NTSTATUS smb2srv_open_table_init(struct smbXsrv_connection *conn);
 439 NTSTATUS smb2srv_open_lookup(struct smbXsrv_connection *conn,
 440                              uint64_t persistent_id,
 441                              uint64_t volatile_id,
 442                              NTTIME now,
 443                              struct smbXsrv_open **_open);
 444
 445 struct smbd_smb2_request {
 446         struct smbd_smb2_request *prev, *next;
 447
 448         struct smbd_server_connection *sconn;
 449
 450         /* the session the request operates on, maybe NULL */
 451         struct smbXsrv_session *session;
 452         uint64_t last_session_id;
 453
 454         /* the tcon the request operates on, maybe NULL */
 455         struct smbXsrv_tcon *tcon;
 456         uint32_t last_tid;
 457
 458         int current_idx;
 459         bool do_signing;
 460         bool do_encryption;
 461         struct tevent_timer *async_te;
 462         bool cancelled;
 463         bool compound_related;
 464
 465         /*
 466          * the encryption key for the whole
 467          * compound chain
 468          */
 469         DATA_BLOB first_key;
 470         /*
 471          * the signing key for the last
 472          * request/response of a compound chain
 473          */
 474         DATA_BLOB last_key;
 475
 476         struct timeval request_time;
 477
 478         /* fake smb1 request. */
 479         struct smb_request *smb1req;
 480         struct files_struct *compat_chain_fsp;
 481
 482         NTSTATUS next_status;
 483
 484         /*
 485          * The sub request for async backend calls.
 486          * This is used for SMB2 Cancel.
 487          */
 488         struct tevent_req *subreq;
 489
 490 #define SMBD_SMB2_TF_IOV_OFS 0
 491 #define SMBD_SMB2_HDR_IOV_OFS 1
 492 #define SMBD_SMB2_BODY_IOV_OFS 2
 493 #define SMBD_SMB2_DYN_IOV_OFS 3
 494
 495 #define SMBD_SMB2_NUM_IOV_PER_REQ 4
 496
 497 #define SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,ofs) \
 498         (&req->dir.vector[(idx)+(ofs)])
 499
 500 #define SMBD_SMB2_IDX_TF_IOV(req,dir,idx) \
 501         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_TF_IOV_OFS)
 502 #define SMBD_SMB2_IDX_HDR_IOV(req,dir,idx) \
 503         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_HDR_IOV_OFS)
 504 #define SMBD_SMB2_IDX_BODY_IOV(req,dir,idx) \
 505         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_BODY_IOV_OFS)
 506 #define SMBD_SMB2_IDX_DYN_IOV(req,dir,idx) \
 507         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_DYN_IOV_OFS)
 508
 509 #define SMBD_SMB2_IN_TF_IOV(req)    SMBD_SMB2_IDX_TF_IOV(req,in,req->current_idx)
 510 #define SMBD_SMB2_IN_TF_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_TF_IOV(req)->iov_base)
 511 #define SMBD_SMB2_IN_HDR_IOV(req)    SMBD_SMB2_IDX_HDR_IOV(req,in,req->current_idx)
 512 #define SMBD_SMB2_IN_HDR_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_HDR_IOV(req)->iov_base)
 513 #define SMBD_SMB2_IN_BODY_IOV(req)   SMBD_SMB2_IDX_BODY_IOV(req,in,req->current_idx)
 514 #define SMBD_SMB2_IN_BODY_PTR(req)   (uint8_t *)(SMBD_SMB2_IN_BODY_IOV(req)->iov_base)
 515 #define SMBD_SMB2_IN_BODY_LEN(req)   (SMBD_SMB2_IN_BODY_IOV(req)->iov_len)
 516 #define SMBD_SMB2_IN_DYN_IOV(req)    SMBD_SMB2_IDX_DYN_IOV(req,in,req->current_idx)
 517 #define SMBD_SMB2_IN_DYN_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_DYN_IOV(req)->iov_base)
 518 #define SMBD_SMB2_IN_DYN_LEN(req)    (SMBD_SMB2_IN_DYN_IOV(req)->iov_len)
 519
 520 #define SMBD_SMB2_OUT_TF_IOV(req)   SMBD_SMB2_IDX_TF_IOV(req,out,req->current_idx)
 521 #define SMBD_SMB2_OUT_TF_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_TF_IOV(req)->iov_base)
 522 #define SMBD_SMB2_OUT_HDR_IOV(req)   SMBD_SMB2_IDX_HDR_IOV(req,out,req->current_idx)
 523 #define SMBD_SMB2_OUT_HDR_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_HDR_IOV(req)->iov_base)
 524 #define SMBD_SMB2_OUT_BODY_IOV(req)  SMBD_SMB2_IDX_BODY_IOV(req,out,req->current_idx)
 525 #define SMBD_SMB2_OUT_BODY_PTR(req)  (uint8_t *)(SMBD_SMB2_OUT_BODY_IOV(req)->iov_base)
 526 #define SMBD_SMB2_OUT_BODY_LEN(req)  (SMBD_SMB2_OUT_BODY_IOV(req)->iov_len)
 527 #define SMBD_SMB2_OUT_DYN_IOV(req)   SMBD_SMB2_IDX_DYN_IOV(req,out,req->current_idx)
 528 #define SMBD_SMB2_OUT_DYN_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_DYN_IOV(req)->iov_base)
 529 #define SMBD_SMB2_OUT_DYN_LEN(req)   (SMBD_SMB2_OUT_DYN_IOV(req)->iov_len)
 530
 531         struct {
 532                 /*
 533                  * vector[0] TRANSPORT HEADER (empty)
 534                  * .
 535                  * vector[1] SMB2_TRANSFORM (optional)
 536                  * vector[2] SMB2
 537                  * vector[3] fixed body
 538                  * vector[4] dynamic body
 539                  * .
 540                  * .
 541                  * .
 542                  * vector[5] SMB2_TRANSFORM (optional)
 543                  * vector[6] SMB2
 544                  * vector[7] fixed body
 545                  * vector[8] dynamic body
 546                  * .
 547                  * .
 548                  * .
 549                  */
 550                 struct iovec *vector;
 551                 int vector_count;
 552         } in;
 553         struct {
 554                 /* the NBT header is not allocated */
 555                 uint8_t nbt_hdr[4];
 556                 /*
 557                  * vector[0] TRANSPORT HEADER
 558                  * .
 559                  * vector[1] SMB2_TRANSFORM (optional)
 560                  * vector[2] SMB2
 561                  * vector[3] fixed body
 562                  * vector[4] dynamic body
 563                  * .
 564                  * .
 565                  * .
 566                  * vector[5] SMB2_TRANSFORM (empty)
 567                  * vector[6] SMB2
 568                  * vector[7] fixed body
 569                  * vector[8] dynamic body
 570                  * .
 571                  * .
 572                  * .
 573                  */
 574                 struct iovec *vector;
 575                 int vector_count;
 576         } out;
 577 };
 578
 579 struct smbd_server_connection;
 580 struct user_struct;
 581
 582 struct pending_message_list;
 583 struct pending_auth_data;
 584
 585 struct user_struct {
 586         struct user_struct *next, *prev;
 587         uint64_t vuid; /* Tag for this entry. */
 588
 589         char *session_keystr; /* used by utmp and pam session code.
 590                                  TDB key string */
 591         int homes_snum;
 592
 593         struct auth_session_info *session_info;
 594
 595         struct smbXsrv_session *session;
 596 };
 597
 598 struct smbd_server_connection {
 599         int sock;
 600         const struct tsocket_address *local_address;
 601         const struct tsocket_address *remote_address;
 602         const char *remote_hostname;
 603         struct tevent_context *ev_ctx;
 604         struct messaging_context *msg_ctx;
 605         struct sys_notify_context *sys_notify_ctx;
 606         struct notify_context *notify_ctx;
 607         struct {
 608                 bool got_session;
 609         } nbt;
 610         bool using_smb2;
 611         int trans_num;
 612
 613         size_t num_users;
 614         struct user_struct *users;
 615
 616         size_t num_connections;
 617         struct connection_struct *connections;
 618
 619         size_t num_files;
 620         struct files_struct *files;
 621
 622         int real_max_open_files;
 623         struct fsp_singleton_cache fsp_fi_cache;
 624
 625         struct pending_message_list *deferred_open_queue;
 626
 627
 628         /* open directory handles. */
 629         struct {
 630                 struct bitmap *dptr_bmap;
 631                 struct dptr_struct *dirptrs;
 632                 int dirhandles_open;
 633         } searches;
 634
 635         uint64_t num_requests;
 636
 637         /* Current number of oplocks we have outstanding. */
 638         struct {
 639                 int32_t exclusive_open;
 640                 int32_t level_II_open;
 641                 struct kernel_oplocks *kernel_ops;
 642         } oplocks;
 643
 644         struct {
 645                 struct fd_event *fde;
 646
 647                 struct {
 648                         /*
 649                          * fd for the fcntl lock mutexing access to our sock
 650                          */
 651                         int socket_lock_fd;
 652
 653                         /*
 654                          * fd for the trusted pipe from
 655                          * echo handler child
 656                          */
 657                         int trusted_fd;
 658
 659                         /*
 660                          * fde for the trusted_fd
 661                          */
 662                         struct fd_event *trusted_fde;
 663
 664                         /*
 665                          * Reference count for the fcntl lock to
 666                          * allow recursive locks.
 667                          */
 668                         int ref_count;
 669                 } echo_handler;
 670
 671                 struct {
 672                         bool encrypted_passwords;
 673                         bool spnego;
 674                         struct auth4_context *auth_context;
 675                         bool done;
 676                         /*
 677                          * Size of the data we can receive. Set by us.
 678                          * Can be modified by the max xmit parameter.
 679                          */
 680                         int max_recv;
 681                 } negprot;
 682
 683                 struct {
 684                         uint16_t client_major;
 685                         uint16_t client_minor;
 686                         uint32_t client_cap_low;
 687                         uint32_t client_cap_high;
 688                 } unix_info;
 689
 690                 struct {
 691                         bool done_sesssetup;
 692                         /*
 693                          * Size of data we can send to client. Set
 694                          *  by the client for all protocols above CORE.
 695                          *  Set by us for CORE protocol.
 696                          */
 697                         int max_send;
 698                         uint64_t last_session_tag;
 699                 } sessions;
 700                 struct smb_signing_state *signing_state;
 701
 702                 struct notify_mid_map *notify_mid_maps;
 703
 704                 struct {
 705                         /* dlink list we store pending lock records on. */
 706                         struct blocking_lock_record *blocking_lock_queue;
 707                         /* dlink list we move cancelled lock records onto. */
 708                         struct blocking_lock_record *blocking_lock_cancelled_queue;
 709
 710                         /* The event that makes us process our blocking lock queue */
 711                         struct timed_event *brl_timeout;
 712
 713                         bool blocking_lock_unlock_state;
 714                         bool blocking_lock_cancel_state;
 715                 } locks;
 716         } smb1;
 717         struct {
 718                 struct tevent_queue *recv_queue;
 719                 struct tevent_queue *send_queue;
 720                 struct tstream_context *stream;
 721                 bool negprot_2ff;
 722                 struct {
 723                         /* The event that makes us process our blocking lock queue */
 724                         struct timed_event *brl_timeout;
 725                         bool blocking_lock_unlock_state;
 726                 } locks;
 727                 struct smbd_smb2_request *requests;
 728                 /*
 729                  * seqnum_low is the lowest sequence number
 730                  * we will accept.
 731                  */
 732                 uint64_t seqnum_low;
 733                 /*
 734                  * seqnum_range is the range of credits we have
 735                  * granted from the sequence windows starting
 736                  * at seqnum_low.
 737                  *
 738                  * This gets incremented when new credits are
 739                  * granted and gets decremented when the
 740                  * lowest sequence number is consumed
 741                  * (when seqnum_low gets incremented).
 742                  */
 743                 uint16_t seqnum_range;
 744                 /*
 745                  * credits_grantedThe number of credits we have currently granted
 746                  * to the client.
 747                  *
 748                  * This gets incremented when new credits are
 749                  * granted and gets decremented when any credit
 750                  * is comsumed.
 751                  *
 752                  * Note: the decrementing is different compared
 753                  *       to seqnum_range.
 754                  */
 755                 uint16_t credits_granted;
 756                 /*
 757                  * The maximum number of credits we will ever
 758                  * grant to the client.
 759                  *
 760                  * Typically we will only grant 1/16th of
 761                  * max_credits.
 762                  *
 763                  * This is the "server max credits" parameter.
 764                  */
 765                 uint16_t max_credits;
 766                 /*
 767                  * a bitmap of size max_credits
 768                  */
 769                 struct bitmap *credits_bitmap;
 770                 bool supports_multicredit;
 771                 uint32_t max_trans;
 772                 uint32_t max_read;
 773                 uint32_t max_write;
 774                 bool compound_related_in_progress;
 775         } smb2;
 776
 777         struct smbXsrv_connection *conn;
 778 };
 779
 780 extern struct smbXsrv_connection *global_smbXsrv_connection;
 781
 782 void smbd_init_globals(void);