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
 105 struct smbd_parent_context;
 106 extern struct smbd_parent_context *am_parent;
 107 extern struct memcache *smbd_memcache_ctx;
 108 extern bool exit_firsttime;
 109
 110 struct tstream_context;
 111 struct smbd_smb2_request;
 112
 113 DATA_BLOB negprot_spnego(TALLOC_CTX *ctx, struct smbd_server_connection *sconn);
 114
 115 void smbd_lock_socket(struct smbd_server_connection *sconn);
 116 void smbd_unlock_socket(struct smbd_server_connection *sconn);
 117
 118 NTSTATUS smbd_do_locking(struct smb_request *req,
 119                          files_struct *fsp,
 120                          uint8_t type,
 121                          int32_t timeout,
 122                          uint16_t num_ulocks,
 123                          struct smbd_lock_element *ulocks,
 124                          uint16_t num_locks,
 125                          struct smbd_lock_element *locks,
 126                          bool *async);
 127
 128 NTSTATUS smbd_do_qfilepathinfo(connection_struct *conn,
 129                                TALLOC_CTX *mem_ctx,
 130                                uint16_t info_level,
 131                                files_struct *fsp,
 132                                struct smb_filename *smb_fname,
 133                                bool delete_pending,
 134                                struct timespec write_time_ts,
 135                                struct ea_list *ea_list,
 136                                int lock_data_count,
 137                                char *lock_data,
 138                                uint16_t flags2,
 139                                unsigned int max_data_bytes,
 140                                char **ppdata,
 141                                unsigned int *pdata_size);
 142
 143 NTSTATUS smbd_do_setfilepathinfo(connection_struct *conn,
 144                                 struct smb_request *req,
 145                                 TALLOC_CTX *mem_ctx,
 146                                 uint16_t info_level,
 147                                 files_struct *fsp,
 148                                 struct smb_filename *smb_fname,
 149                                 char **ppdata, int total_data,
 150                                 int *ret_data_size);
 151
 152 NTSTATUS smbd_do_qfsinfo(connection_struct *conn,
 153                          TALLOC_CTX *mem_ctx,
 154                          uint16_t info_level,
 155                          uint16_t flags2,
 156                          unsigned int max_data_bytes,
 157                          char **ppdata,
 158                          int *ret_data_len);
 159
 160 bool smbd_dirptr_get_entry(TALLOC_CTX *ctx,
 161                            struct dptr_struct *dirptr,
 162                            const char *mask,
 163                            uint32_t dirtype,
 164                            bool dont_descend,
 165                            bool ask_sharemode,
 166                            bool (*match_fn)(TALLOC_CTX *ctx,
 167                                             void *private_data,
 168                                             const char *dname,
 169                                             const char *mask,
 170                                             char **_fname),
 171                            bool (*mode_fn)(TALLOC_CTX *ctx,
 172                                            void *private_data,
 173                                            struct smb_filename *smb_fname,
 174                                            uint32_t *_mode),
 175                            void *private_data,
 176                            char **_fname,
 177                            struct smb_filename **_smb_fname,
 178                            uint32_t *_mode,
 179                            long *_prev_offset);
 180
 181 bool smbd_dirptr_lanman2_entry(TALLOC_CTX *ctx,
 182                                connection_struct *conn,
 183                                struct dptr_struct *dirptr,
 184                                uint16 flags2,
 185                                const char *path_mask,
 186                                uint32 dirtype,
 187                                int info_level,
 188                                int requires_resume_key,
 189                                bool dont_descend,
 190                                bool ask_sharemode,
 191                                uint8_t align,
 192                                bool do_pad,
 193                                char **ppdata,
 194                                char *base_data,
 195                                char *end_data,
 196                                int space_remaining,
 197                                bool *out_of_space,
 198                                bool *got_exact_match,
 199                                int *_last_entry_off,
 200                                struct ea_list *name_list);
 201
 202 NTSTATUS smbd_calculate_access_mask(connection_struct *conn,
 203                                     const struct smb_filename *smb_fname,
 204                                     uint32_t access_mask,
 205                                     uint32_t *access_mask_out);
 206
 207 void smbd_notify_cancel_by_smbreq(const struct smb_request *smbreq);
 208
 209 void smbd_server_connection_terminate_ex(struct smbd_server_connection *sconn,
 210                                          const char *reason,
 211                                          const char *location);
 212 #define smbd_server_connection_terminate(sconn, reason) \
 213         smbd_server_connection_terminate_ex(sconn, reason, __location__)
 214
 215 const char *smb2_opcode_name(uint16_t opcode);
 216 bool smbd_is_smb2_header(const uint8_t *inbuf, size_t size);
 217
 218 void reply_smb2002(struct smb_request *req, uint16_t choice);
 219 void reply_smb20ff(struct smb_request *req, uint16_t choice);
 220 void smbd_smb2_first_negprot(struct smbd_server_connection *sconn,
 221                              uint8_t *inbuf, size_t size);
 222
 223 NTSTATUS smbd_smb2_request_error_ex(struct smbd_smb2_request *req,
 224                                     NTSTATUS status,
 225                                     DATA_BLOB *info,
 226                                     const char *location);
 227 #define smbd_smb2_request_error(req, status) \
 228         smbd_smb2_request_error_ex(req, status, NULL, __location__)
 229 NTSTATUS smbd_smb2_request_done_ex(struct smbd_smb2_request *req,
 230                                    NTSTATUS status,
 231                                    DATA_BLOB body, DATA_BLOB *dyn,
 232                                    const char *location);
 233 #define smbd_smb2_request_done(req, body, dyn) \
 234         smbd_smb2_request_done_ex(req, NT_STATUS_OK, body, dyn, __location__)
 235
 236 NTSTATUS smbd_smb2_send_oplock_break(struct smbd_server_connection *sconn,
 237                                      struct smbXsrv_session *session,
 238                                      struct smbXsrv_tcon *tcon,
 239                                      struct smbXsrv_open *op,
 240                                      uint8_t oplock_level);
 241
 242 NTSTATUS smbd_smb2_request_pending_queue(struct smbd_smb2_request *req,
 243                                          struct tevent_req *subreq,
 244                                          uint32_t defer_time);
 245
 246 struct smb_request *smbd_smb2_fake_smb_request(struct smbd_smb2_request *req);
 247 void remove_smb2_chained_fsp(files_struct *fsp);
 248
 249 NTSTATUS smbd_smb2_request_verify_creditcharge(struct smbd_smb2_request *req,
 250                                                uint32_t data_length);
 251
 252 NTSTATUS smbd_smb2_request_verify_sizes(struct smbd_smb2_request *req,
 253                                         size_t expected_body_size);
 254
 255 NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req);
 256 NTSTATUS smbd_smb2_request_process_sesssetup(struct smbd_smb2_request *req);
 257 NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req);
 258 NTSTATUS smbd_smb2_request_process_tcon(struct smbd_smb2_request *req);
 259 NTSTATUS smbd_smb2_request_process_tdis(struct smbd_smb2_request *req);
 260 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req);
 261 NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req);
 262 NTSTATUS smbd_smb2_request_process_flush(struct smbd_smb2_request *req);
 263 NTSTATUS smbd_smb2_request_process_read(struct smbd_smb2_request *req);
 264 NTSTATUS smb2_read_complete(struct tevent_req *req, ssize_t nread, int err);
 265 NTSTATUS smbd_smb2_request_process_write(struct smbd_smb2_request *req);
 266 NTSTATUS smb2_write_complete(struct tevent_req *req, ssize_t nwritten, int err);
 267 NTSTATUS smb2_write_complete_nosync(struct tevent_req *req, ssize_t nwritten,
 268                                     int err);
 269 NTSTATUS smbd_smb2_request_process_lock(struct smbd_smb2_request *req);
 270 NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req);
 271 NTSTATUS smbd_smb2_request_process_keepalive(struct smbd_smb2_request *req);
 272 NTSTATUS smbd_smb2_request_process_find(struct smbd_smb2_request *req);
 273 NTSTATUS smbd_smb2_request_process_notify(struct smbd_smb2_request *req);
 274 NTSTATUS smbd_smb2_request_process_getinfo(struct smbd_smb2_request *req);
 275 NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req);
 276 NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req);
 277 NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req);
 278 void smbd_smb2_request_dispatch_immediate(struct tevent_context *ctx,
 279                                 struct tevent_immediate *im,
 280                                 void *private_data);
 281
 282 /* SMB1 -> SMB2 glue. */
 283 void send_break_message_smb2(files_struct *fsp, int level);
 284 struct blocking_lock_record *get_pending_smb2req_blr(struct smbd_smb2_request *smb2req);
 285 bool push_blocking_lock_request_smb2( struct byte_range_lock *br_lck,
 286                                 struct smb_request *req,
 287                                 files_struct *fsp,
 288                                 int lock_timeout,
 289                                 int lock_num,
 290                                 uint64_t smblctx,
 291                                 enum brl_type lock_type,
 292                                 enum brl_flavour lock_flav,
 293                                 uint64_t offset,
 294                                 uint64_t count,
 295                                 uint64_t blocking_smblctx);
 296 void process_blocking_lock_queue_smb2(
 297         struct smbd_server_connection *sconn, struct timeval tv_curr);
 298 void cancel_pending_lock_requests_by_fid_smb2(files_struct *fsp,
 299                         struct byte_range_lock *br_lck,
 300                         enum file_close_type close_type);
 301 /* From smbd/smb2_create.c */
 302 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level);
 303 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
 304                         struct timeval *p_request_time,
 305                         void **pp_state);
 306 bool open_was_deferred_smb2(struct smbd_server_connection *sconn,
 307                             uint64_t mid);
 308 void remove_deferred_open_message_smb2(
 309         struct smbd_server_connection *sconn, uint64_t mid);
 310 bool schedule_deferred_open_message_smb2(
 311         struct smbd_server_connection *sconn, uint64_t mid);
 312 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
 313                         struct timeval request_time,
 314                         struct timeval timeout,
 315                         struct file_id id,
 316                         char *private_data,
 317                         size_t priv_len);
 318
 319 struct smbXsrv_connection {
 320         struct smbd_server_connection *sconn;
 321
 322         const struct tsocket_address *local_address;
 323         const struct tsocket_address *remote_address;
 324         const char *remote_hostname;
 325
 326         struct tevent_context *ev_ctx;
 327         struct messaging_context *msg_ctx;
 328
 329         enum protocol_types protocol;
 330
 331         struct {
 332                 struct {
 333                         uint32_t capabilities;
 334                         struct GUID guid;
 335                         uint16_t security_mode;
 336                         uint16_t num_dialects;
 337                         uint16_t *dialects;
 338                 } client;
 339                 struct {
 340                         uint32_t capabilities;
 341                         struct GUID guid;
 342                         uint16_t security_mode;
 343                         uint16_t dialect;
 344                         uint32_t max_trans;
 345                         uint32_t max_read;
 346                         uint32_t max_write;
 347                 } server;
 348         } smb2;
 349
 350         struct msg_state *msg_state;
 351
 352         /*
 353          * Link into libasys for asynchronous operations
 354          */
 355         struct asys_context *asys_ctx;
 356         struct tevent_fd *asys_fde;
 357
 358         uint64_t smbd_idle_profstamp;
 359
 360         /*
 361          * this session_table is used for SMB1 and SMB2,
 362          */
 363         struct smbXsrv_session_table *session_table;
 364         /*
 365          * this tcon_table is only used for SMB1.
 366          */
 367         struct smbXsrv_tcon_table *tcon_table;
 368         /*
 369          * this open_table is used for SMB1 and SMB2,
 370          * because we have a global sconn->real_max_open_files
 371          * limit.
 372          */
 373         struct smbXsrv_open_table *open_table;
 374 };
 375
 376 NTSTATUS smbXsrv_version_global_init(const struct server_id *server_id);
 377 uint32_t smbXsrv_version_global_current(void);
 378
 379 NTSTATUS smbXsrv_connection_init_tables(struct smbXsrv_connection *conn,
 380                                         enum protocol_types protocol);
 381
 382 NTSTATUS smbXsrv_session_global_init(void);
 383 NTSTATUS smbXsrv_session_create(struct smbXsrv_connection *conn,
 384                                 NTTIME now,
 385                                 struct smbXsrv_session **_session);
 386 NTSTATUS smbXsrv_session_update(struct smbXsrv_session *session);
 387 NTSTATUS smbXsrv_session_logoff(struct smbXsrv_session *session);
 388 NTSTATUS smbXsrv_session_logoff_all(struct smbXsrv_connection *conn);
 389 NTSTATUS smb1srv_session_table_init(struct smbXsrv_connection *conn);
 390 NTSTATUS smb1srv_session_lookup(struct smbXsrv_connection *conn,
 391                                 uint16_t vuid, NTTIME now,
 392                                 struct smbXsrv_session **session);
 393 NTSTATUS smb2srv_session_table_init(struct smbXsrv_connection *conn);
 394 NTSTATUS smb2srv_session_lookup(struct smbXsrv_connection *conn,
 395                                 uint64_t session_id, NTTIME now,
 396                                 struct smbXsrv_session **session);
 397 struct tevent_req *smb2srv_session_close_previous_send(TALLOC_CTX *mem_ctx,
 398                                         struct tevent_context *ev,
 399                                         struct smbXsrv_connection *conn,
 400                                         struct auth_session_info *session_info,
 401                                         uint64_t previous_session_id,
 402                                         uint64_t current_session_id);
 403 NTSTATUS smb2srv_session_close_previous_recv(struct tevent_req *req);
 404
 405 NTSTATUS smbXsrv_tcon_global_init(void);
 406 NTSTATUS smbXsrv_tcon_update(struct smbXsrv_tcon *tcon);
 407 NTSTATUS smbXsrv_tcon_disconnect(struct smbXsrv_tcon *tcon, uint64_t vuid);
 408 NTSTATUS smb1srv_tcon_table_init(struct smbXsrv_connection *conn);
 409 NTSTATUS smb1srv_tcon_create(struct smbXsrv_connection *conn,
 410                              NTTIME now,
 411                              struct smbXsrv_tcon **_tcon);
 412 NTSTATUS smb1srv_tcon_lookup(struct smbXsrv_connection *conn,
 413                              uint16_t tree_id, NTTIME now,
 414                              struct smbXsrv_tcon **tcon);
 415 NTSTATUS smb1srv_tcon_disconnect_all(struct smbXsrv_connection *conn);
 416 NTSTATUS smb2srv_tcon_table_init(struct smbXsrv_session *session);
 417 NTSTATUS smb2srv_tcon_create(struct smbXsrv_session *session,
 418                              NTTIME now,
 419                              struct smbXsrv_tcon **_tcon);
 420 NTSTATUS smb2srv_tcon_lookup(struct smbXsrv_session *session,
 421                              uint32_t tree_id, NTTIME now,
 422                              struct smbXsrv_tcon **tcon);
 423 NTSTATUS smb2srv_tcon_disconnect_all(struct smbXsrv_session *session);
 424
 425 NTSTATUS smbXsrv_open_global_init(void);
 426 NTSTATUS smbXsrv_open_create(struct smbXsrv_connection *conn,
 427                              struct auth_session_info *session_info,
 428                              NTTIME now,
 429                              struct smbXsrv_open **_open);
 430 uint32_t smbXsrv_open_hash(struct smbXsrv_open *_open);
 431 NTSTATUS smbXsrv_open_update(struct smbXsrv_open *_open);
 432 NTSTATUS smbXsrv_open_close(struct smbXsrv_open *op, NTTIME now);
 433 NTSTATUS smb1srv_open_table_init(struct smbXsrv_connection *conn);
 434 NTSTATUS smb1srv_open_lookup(struct smbXsrv_connection *conn,
 435                              uint16_t fnum, NTTIME now,
 436                              struct smbXsrv_open **_open);
 437 NTSTATUS smb2srv_open_table_init(struct smbXsrv_connection *conn);
 438 NTSTATUS smb2srv_open_lookup(struct smbXsrv_connection *conn,
 439                              uint64_t persistent_id,
 440                              uint64_t volatile_id,
 441                              NTTIME now,
 442                              struct smbXsrv_open **_open);
 443 NTSTATUS smb2srv_open_recreate(struct smbXsrv_connection *conn,
 444                                struct auth_session_info *session_info,
 445                                uint64_t persistent_id,
 446                                struct GUID create_guid,
 447                                NTTIME now,
 448                                struct smbXsrv_open **_open);
 449
 450 struct smbd_smb2_request {
 451         struct smbd_smb2_request *prev, *next;
 452
 453         struct smbd_server_connection *sconn;
 454
 455         /* the session the request operates on, maybe NULL */
 456         struct smbXsrv_session *session;
 457         uint64_t last_session_id;
 458
 459         /* the tcon the request operates on, maybe NULL */
 460         struct smbXsrv_tcon *tcon;
 461         uint32_t last_tid;
 462
 463         int current_idx;
 464         bool do_signing;
 465         bool do_encryption;
 466         struct tevent_timer *async_te;
 467         bool cancelled;
 468         bool compound_related;
 469
 470         /*
 471          * the encryption key for the whole
 472          * compound chain
 473          */
 474         DATA_BLOB first_key;
 475         /*
 476          * the signing key for the last
 477          * request/response of a compound chain
 478          */
 479         DATA_BLOB last_key;
 480
 481         struct timeval request_time;
 482
 483         /* fake smb1 request. */
 484         struct smb_request *smb1req;
 485         struct files_struct *compat_chain_fsp;
 486
 487         NTSTATUS next_status;
 488
 489         /*
 490          * The sub request for async backend calls.
 491          * This is used for SMB2 Cancel.
 492          */
 493         struct tevent_req *subreq;
 494
 495 #define SMBD_SMB2_TF_IOV_OFS 0
 496 #define SMBD_SMB2_HDR_IOV_OFS 1
 497 #define SMBD_SMB2_BODY_IOV_OFS 2
 498 #define SMBD_SMB2_DYN_IOV_OFS 3
 499
 500 #define SMBD_SMB2_NUM_IOV_PER_REQ 4
 501
 502 #define SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,ofs) \
 503         (&req->dir.vector[(idx)+(ofs)])
 504
 505 #define SMBD_SMB2_IDX_TF_IOV(req,dir,idx) \
 506         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_TF_IOV_OFS)
 507 #define SMBD_SMB2_IDX_HDR_IOV(req,dir,idx) \
 508         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_HDR_IOV_OFS)
 509 #define SMBD_SMB2_IDX_BODY_IOV(req,dir,idx) \
 510         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_BODY_IOV_OFS)
 511 #define SMBD_SMB2_IDX_DYN_IOV(req,dir,idx) \
 512         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_DYN_IOV_OFS)
 513
 514 #define SMBD_SMB2_IN_TF_IOV(req)    SMBD_SMB2_IDX_TF_IOV(req,in,req->current_idx)
 515 #define SMBD_SMB2_IN_TF_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_TF_IOV(req)->iov_base)
 516 #define SMBD_SMB2_IN_HDR_IOV(req)    SMBD_SMB2_IDX_HDR_IOV(req,in,req->current_idx)
 517 #define SMBD_SMB2_IN_HDR_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_HDR_IOV(req)->iov_base)
 518 #define SMBD_SMB2_IN_BODY_IOV(req)   SMBD_SMB2_IDX_BODY_IOV(req,in,req->current_idx)
 519 #define SMBD_SMB2_IN_BODY_PTR(req)   (uint8_t *)(SMBD_SMB2_IN_BODY_IOV(req)->iov_base)
 520 #define SMBD_SMB2_IN_BODY_LEN(req)   (SMBD_SMB2_IN_BODY_IOV(req)->iov_len)
 521 #define SMBD_SMB2_IN_DYN_IOV(req)    SMBD_SMB2_IDX_DYN_IOV(req,in,req->current_idx)
 522 #define SMBD_SMB2_IN_DYN_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_DYN_IOV(req)->iov_base)
 523 #define SMBD_SMB2_IN_DYN_LEN(req)    (SMBD_SMB2_IN_DYN_IOV(req)->iov_len)
 524
 525 #define SMBD_SMB2_OUT_TF_IOV(req)   SMBD_SMB2_IDX_TF_IOV(req,out,req->current_idx)
 526 #define SMBD_SMB2_OUT_TF_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_TF_IOV(req)->iov_base)
 527 #define SMBD_SMB2_OUT_HDR_IOV(req)   SMBD_SMB2_IDX_HDR_IOV(req,out,req->current_idx)
 528 #define SMBD_SMB2_OUT_HDR_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_HDR_IOV(req)->iov_base)
 529 #define SMBD_SMB2_OUT_BODY_IOV(req)  SMBD_SMB2_IDX_BODY_IOV(req,out,req->current_idx)
 530 #define SMBD_SMB2_OUT_BODY_PTR(req)  (uint8_t *)(SMBD_SMB2_OUT_BODY_IOV(req)->iov_base)
 531 #define SMBD_SMB2_OUT_BODY_LEN(req)  (SMBD_SMB2_OUT_BODY_IOV(req)->iov_len)
 532 #define SMBD_SMB2_OUT_DYN_IOV(req)   SMBD_SMB2_IDX_DYN_IOV(req,out,req->current_idx)
 533 #define SMBD_SMB2_OUT_DYN_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_DYN_IOV(req)->iov_base)
 534 #define SMBD_SMB2_OUT_DYN_LEN(req)   (SMBD_SMB2_OUT_DYN_IOV(req)->iov_len)
 535
 536         struct {
 537                 /*
 538                  * vector[0] TRANSPORT HEADER (empty)
 539                  * .
 540                  * vector[1] SMB2_TRANSFORM (optional)
 541                  * vector[2] SMB2
 542                  * vector[3] fixed body
 543                  * vector[4] dynamic body
 544                  * .
 545                  * .
 546                  * .
 547                  * vector[5] SMB2_TRANSFORM (optional)
 548                  * vector[6] SMB2
 549                  * vector[7] fixed body
 550                  * vector[8] dynamic body
 551                  * .
 552                  * .
 553                  * .
 554                  */
 555                 struct iovec *vector;
 556                 int vector_count;
 557         } in;
 558         struct {
 559                 /* the NBT header is not allocated */
 560                 uint8_t nbt_hdr[4];
 561                 /*
 562                  * vector[0] TRANSPORT HEADER
 563                  * .
 564                  * vector[1] SMB2_TRANSFORM (optional)
 565                  * vector[2] SMB2
 566                  * vector[3] fixed body
 567                  * vector[4] dynamic body
 568                  * .
 569                  * .
 570                  * .
 571                  * vector[5] SMB2_TRANSFORM (empty)
 572                  * vector[6] SMB2
 573                  * vector[7] fixed body
 574                  * vector[8] dynamic body
 575                  * .
 576                  * .
 577                  * .
 578                  */
 579                 struct iovec *vector;
 580                 int vector_count;
 581         } out;
 582 };
 583
 584 struct smbd_server_connection;
 585 struct user_struct;
 586
 587 struct pending_message_list;
 588 struct pending_auth_data;
 589
 590 struct user_struct {
 591         struct user_struct *next, *prev;
 592         uint64_t vuid; /* Tag for this entry. */
 593
 594         char *session_keystr; /* used by utmp and pam session code.
 595                                  TDB key string */
 596         int homes_snum;
 597
 598         struct auth_session_info *session_info;
 599
 600         struct smbXsrv_session *session;
 601 };
 602
 603 struct smbd_server_connection {
 604         int sock;
 605         const struct tsocket_address *local_address;
 606         const struct tsocket_address *remote_address;
 607         const char *remote_hostname;
 608         struct tevent_context *ev_ctx;
 609         struct messaging_context *msg_ctx;
 610         struct sys_notify_context *sys_notify_ctx;
 611         struct notify_context *notify_ctx;
 612         struct {
 613                 bool got_session;
 614         } nbt;
 615         bool using_smb2;
 616         int trans_num;
 617
 618         size_t num_users;
 619         struct user_struct *users;
 620
 621         size_t num_connections;
 622         struct connection_struct *connections;
 623
 624         size_t num_files;
 625         struct files_struct *files;
 626
 627         int real_max_open_files;
 628         struct fsp_singleton_cache fsp_fi_cache;
 629
 630         struct pending_message_list *deferred_open_queue;
 631
 632
 633         /* open directory handles. */
 634         struct {
 635                 struct bitmap *dptr_bmap;
 636                 struct dptr_struct *dirptrs;
 637                 int dirhandles_open;
 638         } searches;
 639
 640         uint64_t num_requests;
 641
 642         /* Current number of oplocks we have outstanding. */
 643         struct {
 644                 int32_t exclusive_open;
 645                 int32_t level_II_open;
 646                 struct kernel_oplocks *kernel_ops;
 647         } oplocks;
 648
 649         struct {
 650                 struct fd_event *fde;
 651
 652                 struct {
 653                         /*
 654                          * fd for the fcntl lock mutexing access to our sock
 655                          */
 656                         int socket_lock_fd;
 657
 658                         /*
 659                          * fd for the trusted pipe from
 660                          * echo handler child
 661                          */
 662                         int trusted_fd;
 663
 664                         /*
 665                          * fde for the trusted_fd
 666                          */
 667                         struct fd_event *trusted_fde;
 668
 669                         /*
 670                          * Reference count for the fcntl lock to
 671                          * allow recursive locks.
 672                          */
 673                         int ref_count;
 674                 } echo_handler;
 675
 676                 struct {
 677                         bool encrypted_passwords;
 678                         bool spnego;
 679                         struct auth4_context *auth_context;
 680                         bool done;
 681                         /*
 682                          * Size of the data we can receive. Set by us.
 683                          * Can be modified by the max xmit parameter.
 684                          */
 685                         int max_recv;
 686                 } negprot;
 687
 688                 struct {
 689                         uint16_t client_major;
 690                         uint16_t client_minor;
 691                         uint32_t client_cap_low;
 692                         uint32_t client_cap_high;
 693                 } unix_info;
 694
 695                 struct {
 696                         bool done_sesssetup;
 697                         /*
 698                          * Size of data we can send to client. Set
 699                          *  by the client for all protocols above CORE.
 700                          *  Set by us for CORE protocol.
 701                          */
 702                         int max_send;
 703                         uint64_t last_session_tag;
 704                 } sessions;
 705                 struct smb_signing_state *signing_state;
 706
 707                 struct notify_mid_map *notify_mid_maps;
 708
 709                 struct {
 710                         /* dlink list we store pending lock records on. */
 711                         struct blocking_lock_record *blocking_lock_queue;
 712                         /* dlink list we move cancelled lock records onto. */
 713                         struct blocking_lock_record *blocking_lock_cancelled_queue;
 714
 715                         /* The event that makes us process our blocking lock queue */
 716                         struct timed_event *brl_timeout;
 717
 718                         bool blocking_lock_unlock_state;
 719                         bool blocking_lock_cancel_state;
 720                 } locks;
 721         } smb1;
 722         struct {
 723                 struct tevent_queue *recv_queue;
 724                 struct tevent_queue *send_queue;
 725                 struct tstream_context *stream;
 726                 bool negprot_2ff;
 727                 struct {
 728                         /* The event that makes us process our blocking lock queue */
 729                         struct timed_event *brl_timeout;
 730                         bool blocking_lock_unlock_state;
 731                 } locks;
 732                 struct smbd_smb2_request *requests;
 733                 /*
 734                  * seqnum_low is the lowest sequence number
 735                  * we will accept.
 736                  */
 737                 uint64_t seqnum_low;
 738                 /*
 739                  * seqnum_range is the range of credits we have
 740                  * granted from the sequence windows starting
 741                  * at seqnum_low.
 742                  *
 743                  * This gets incremented when new credits are
 744                  * granted and gets decremented when the
 745                  * lowest sequence number is consumed
 746                  * (when seqnum_low gets incremented).
 747                  */
 748                 uint16_t seqnum_range;
 749                 /*
 750                  * credits_grantedThe number of credits we have currently granted
 751                  * to the client.
 752                  *
 753                  * This gets incremented when new credits are
 754                  * granted and gets decremented when any credit
 755                  * is comsumed.
 756                  *
 757                  * Note: the decrementing is different compared
 758                  *       to seqnum_range.
 759                  */
 760                 uint16_t credits_granted;
 761                 /*
 762                  * The maximum number of credits we will ever
 763                  * grant to the client.
 764                  *
 765                  * Typically we will only grant 1/16th of
 766                  * max_credits.
 767                  *
 768                  * This is the "server max credits" parameter.
 769                  */
 770                 uint16_t max_credits;
 771                 /*
 772                  * a bitmap of size max_credits
 773                  */
 774                 struct bitmap *credits_bitmap;
 775                 bool supports_multicredit;
 776                 uint32_t max_trans;
 777                 uint32_t max_read;
 778                 uint32_t max_write;
 779                 bool compound_related_in_progress;
 780         } smb2;
 781
 782         struct smbXsrv_connection *conn;
 783 };
 784
 785 extern struct smbXsrv_connection *global_smbXsrv_connection;
 786
 787 void smbd_init_globals(void);