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                                size_t *fixed_portion,
 142                                char **ppdata,
 143                                unsigned int *pdata_size);
 144
 145 NTSTATUS smbd_do_setfilepathinfo(connection_struct *conn,
 146                                 struct smb_request *req,
 147                                 TALLOC_CTX *mem_ctx,
 148                                 uint16_t info_level,
 149                                 files_struct *fsp,
 150                                 struct smb_filename *smb_fname,
 151                                 char **ppdata, int total_data,
 152                                 int *ret_data_size);
 153
 154 NTSTATUS smbd_do_qfsinfo(connection_struct *conn,
 155                          TALLOC_CTX *mem_ctx,
 156                          uint16_t info_level,
 157                          uint16_t flags2,
 158                          unsigned int max_data_bytes,
 159                          struct smb_filename *smb_fname,
 160                          char **ppdata,
 161                          int *ret_data_len);
 162
 163 bool smbd_dirptr_get_entry(TALLOC_CTX *ctx,
 164                            struct dptr_struct *dirptr,
 165                            const char *mask,
 166                            uint32_t dirtype,
 167                            bool dont_descend,
 168                            bool ask_sharemode,
 169                            bool (*match_fn)(TALLOC_CTX *ctx,
 170                                             void *private_data,
 171                                             const char *dname,
 172                                             const char *mask,
 173                                             char **_fname),
 174                            bool (*mode_fn)(TALLOC_CTX *ctx,
 175                                            void *private_data,
 176                                            struct smb_filename *smb_fname,
 177                                            uint32_t *_mode),
 178                            void *private_data,
 179                            char **_fname,
 180                            struct smb_filename **_smb_fname,
 181                            uint32_t *_mode,
 182                            long *_prev_offset);
 183
 184 bool smbd_dirptr_lanman2_entry(TALLOC_CTX *ctx,
 185                                connection_struct *conn,
 186                                struct dptr_struct *dirptr,
 187                                uint16 flags2,
 188                                const char *path_mask,
 189                                uint32 dirtype,
 190                                int info_level,
 191                                int requires_resume_key,
 192                                bool dont_descend,
 193                                bool ask_sharemode,
 194                                uint8_t align,
 195                                bool do_pad,
 196                                char **ppdata,
 197                                char *base_data,
 198                                char *end_data,
 199                                int space_remaining,
 200                                bool *out_of_space,
 201                                bool *got_exact_match,
 202                                int *_last_entry_off,
 203                                struct ea_list *name_list);
 204
 205 NTSTATUS smbd_calculate_access_mask(connection_struct *conn,
 206                                     const struct smb_filename *smb_fname,
 207                                     bool use_privs,
 208                                     uint32_t access_mask,
 209                                     uint32_t *access_mask_out);
 210
 211 void smbd_notify_cancel_by_smbreq(const struct smb_request *smbreq);
 212
 213 void smbd_server_connection_terminate_ex(struct smbd_server_connection *sconn,
 214                                          const char *reason,
 215                                          const char *location);
 216 #define smbd_server_connection_terminate(sconn, reason) \
 217         smbd_server_connection_terminate_ex(sconn, reason, __location__)
 218
 219 const char *smb2_opcode_name(uint16_t opcode);
 220 bool smbd_is_smb2_header(const uint8_t *inbuf, size_t size);
 221
 222 void reply_smb2002(struct smb_request *req, uint16_t choice);
 223 void reply_smb20ff(struct smb_request *req, uint16_t choice);
 224 void smbd_smb2_first_negprot(struct smbd_server_connection *sconn,
 225                              uint8_t *inbuf, size_t size);
 226
 227 NTSTATUS smbd_smb2_request_error_ex(struct smbd_smb2_request *req,
 228                                     NTSTATUS status,
 229                                     DATA_BLOB *info,
 230                                     const char *location);
 231 #define smbd_smb2_request_error(req, status) \
 232         smbd_smb2_request_error_ex(req, status, NULL, __location__)
 233 NTSTATUS smbd_smb2_request_done_ex(struct smbd_smb2_request *req,
 234                                    NTSTATUS status,
 235                                    DATA_BLOB body, DATA_BLOB *dyn,
 236                                    const char *location);
 237 #define smbd_smb2_request_done(req, body, dyn) \
 238         smbd_smb2_request_done_ex(req, NT_STATUS_OK, body, dyn, __location__)
 239
 240 NTSTATUS smbd_smb2_send_oplock_break(struct smbd_server_connection *sconn,
 241                                      struct smbXsrv_session *session,
 242                                      struct smbXsrv_tcon *tcon,
 243                                      struct smbXsrv_open *op,
 244                                      uint8_t oplock_level);
 245
 246 NTSTATUS smbd_smb2_request_pending_queue(struct smbd_smb2_request *req,
 247                                          struct tevent_req *subreq,
 248                                          uint32_t defer_time);
 249
 250 struct smb_request *smbd_smb2_fake_smb_request(struct smbd_smb2_request *req);
 251 size_t smbd_smb2_unread_bytes(struct smbd_smb2_request *req);
 252 void remove_smb2_chained_fsp(files_struct *fsp);
 253
 254 NTSTATUS smbd_smb2_request_verify_creditcharge(struct smbd_smb2_request *req,
 255                                                uint32_t data_length);
 256
 257 NTSTATUS smbd_smb2_request_verify_sizes(struct smbd_smb2_request *req,
 258                                         size_t expected_body_size);
 259
 260 NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req);
 261 NTSTATUS smbd_smb2_request_process_sesssetup(struct smbd_smb2_request *req);
 262 NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req);
 263 NTSTATUS smbd_smb2_request_process_tcon(struct smbd_smb2_request *req);
 264 NTSTATUS smbd_smb2_request_process_tdis(struct smbd_smb2_request *req);
 265 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req);
 266 NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req);
 267 NTSTATUS smbd_smb2_request_process_flush(struct smbd_smb2_request *req);
 268 NTSTATUS smbd_smb2_request_process_read(struct smbd_smb2_request *req);
 269 NTSTATUS smb2_read_complete(struct tevent_req *req, ssize_t nread, int err);
 270 NTSTATUS smbd_smb2_request_process_write(struct smbd_smb2_request *req);
 271 NTSTATUS smb2_write_complete(struct tevent_req *req, ssize_t nwritten, int err);
 272 NTSTATUS smb2_write_complete_nosync(struct tevent_req *req, ssize_t nwritten,
 273                                     int err);
 274 NTSTATUS smbd_smb2_request_process_lock(struct smbd_smb2_request *req);
 275 NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req);
 276 NTSTATUS smbd_smb2_request_process_keepalive(struct smbd_smb2_request *req);
 277 NTSTATUS smbd_smb2_request_process_find(struct smbd_smb2_request *req);
 278 NTSTATUS smbd_smb2_request_process_notify(struct smbd_smb2_request *req);
 279 NTSTATUS smbd_smb2_request_process_getinfo(struct smbd_smb2_request *req);
 280 NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req);
 281 NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req);
 282 NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req);
 283 void smbd_smb2_request_dispatch_immediate(struct tevent_context *ctx,
 284                                 struct tevent_immediate *im,
 285                                 void *private_data);
 286
 287 /* SMB1 -> SMB2 glue. */
 288 void send_break_message_smb2(files_struct *fsp, int level);
 289 struct blocking_lock_record *get_pending_smb2req_blr(struct smbd_smb2_request *smb2req);
 290 bool push_blocking_lock_request_smb2( struct byte_range_lock *br_lck,
 291                                 struct smb_request *req,
 292                                 files_struct *fsp,
 293                                 int lock_timeout,
 294                                 int lock_num,
 295                                 uint64_t smblctx,
 296                                 enum brl_type lock_type,
 297                                 enum brl_flavour lock_flav,
 298                                 uint64_t offset,
 299                                 uint64_t count,
 300                                 uint64_t blocking_smblctx);
 301 void process_blocking_lock_queue_smb2(
 302         struct smbd_server_connection *sconn, struct timeval tv_curr);
 303 void cancel_pending_lock_requests_by_fid_smb2(files_struct *fsp,
 304                         struct byte_range_lock *br_lck,
 305                         enum file_close_type close_type);
 306 /* From smbd/smb2_create.c */
 307 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level);
 308 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
 309                         struct timeval *p_request_time,
 310                         void **pp_state);
 311 bool open_was_deferred_smb2(struct smbd_server_connection *sconn,
 312                             uint64_t mid);
 313 void remove_deferred_open_message_smb2(
 314         struct smbd_server_connection *sconn, uint64_t mid);
 315 bool schedule_deferred_open_message_smb2(
 316         struct smbd_server_connection *sconn, uint64_t mid);
 317 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
 318                         struct timeval request_time,
 319                         struct timeval timeout,
 320                         struct file_id id,
 321                         char *private_data,
 322                         size_t priv_len);
 323
 324 struct smbXsrv_connection {
 325         struct smbd_server_connection *sconn;
 326
 327         const struct tsocket_address *local_address;
 328         const struct tsocket_address *remote_address;
 329         const char *remote_hostname;
 330
 331         struct tevent_context *ev_ctx;
 332         struct messaging_context *msg_ctx;
 333
 334         enum protocol_types protocol;
 335
 336         struct {
 337                 struct {
 338                         uint32_t capabilities;
 339                         struct GUID guid;
 340                         uint16_t security_mode;
 341                         uint16_t num_dialects;
 342                         uint16_t *dialects;
 343                 } client;
 344                 struct {
 345                         uint32_t capabilities;
 346                         struct GUID guid;
 347                         uint16_t security_mode;
 348                         uint16_t dialect;
 349                         uint32_t max_trans;
 350                         uint32_t max_read;
 351                         uint32_t max_write;
 352                 } server;
 353         } smb2;
 354
 355         struct msg_state *msg_state;
 356
 357         /*
 358          * Link into libasys for asynchronous operations
 359          */
 360         struct asys_context *asys_ctx;
 361         struct tevent_fd *asys_fde;
 362
 363         uint64_t smbd_idle_profstamp;
 364
 365         /*
 366          * this session_table is used for SMB1 and SMB2,
 367          */
 368         struct smbXsrv_session_table *session_table;
 369         /*
 370          * this tcon_table is only used for SMB1.
 371          */
 372         struct smbXsrv_tcon_table *tcon_table;
 373         /*
 374          * this open_table is used for SMB1 and SMB2,
 375          * because we have a global sconn->real_max_open_files
 376          * limit.
 377          */
 378         struct smbXsrv_open_table *open_table;
 379 };
 380
 381 NTSTATUS smbXsrv_version_global_init(const struct server_id *server_id);
 382 uint32_t smbXsrv_version_global_current(void);
 383
 384 NTSTATUS smbXsrv_connection_init_tables(struct smbXsrv_connection *conn,
 385                                         enum protocol_types protocol);
 386
 387 NTSTATUS smbXsrv_session_global_init(void);
 388 NTSTATUS smbXsrv_session_create(struct smbXsrv_connection *conn,
 389                                 NTTIME now,
 390                                 struct smbXsrv_session **_session);
 391 NTSTATUS smbXsrv_session_update(struct smbXsrv_session *session);
 392 NTSTATUS smbXsrv_session_logoff(struct smbXsrv_session *session);
 393 NTSTATUS smbXsrv_session_logoff_all(struct smbXsrv_connection *conn);
 394 NTSTATUS smb1srv_session_table_init(struct smbXsrv_connection *conn);
 395 NTSTATUS smb1srv_session_lookup(struct smbXsrv_connection *conn,
 396                                 uint16_t vuid, NTTIME now,
 397                                 struct smbXsrv_session **session);
 398 NTSTATUS smb2srv_session_table_init(struct smbXsrv_connection *conn);
 399 NTSTATUS smb2srv_session_lookup(struct smbXsrv_connection *conn,
 400                                 uint64_t session_id, NTTIME now,
 401                                 struct smbXsrv_session **session);
 402 struct smbXsrv_session_global0;
 403 NTSTATUS smbXsrv_session_global_traverse(
 404                         int (*fn)(struct smbXsrv_session_global0 *, void *),
 405                         void *private_data);
 406 struct tevent_req *smb2srv_session_close_previous_send(TALLOC_CTX *mem_ctx,
 407                                         struct tevent_context *ev,
 408                                         struct smbXsrv_connection *conn,
 409                                         struct auth_session_info *session_info,
 410                                         uint64_t previous_session_id,
 411                                         uint64_t current_session_id);
 412 NTSTATUS smb2srv_session_close_previous_recv(struct tevent_req *req);
 413
 414 NTSTATUS smbXsrv_tcon_global_init(void);
 415 NTSTATUS smbXsrv_tcon_update(struct smbXsrv_tcon *tcon);
 416 NTSTATUS smbXsrv_tcon_disconnect(struct smbXsrv_tcon *tcon, uint64_t vuid);
 417 NTSTATUS smb1srv_tcon_table_init(struct smbXsrv_connection *conn);
 418 NTSTATUS smb1srv_tcon_create(struct smbXsrv_connection *conn,
 419                              NTTIME now,
 420                              struct smbXsrv_tcon **_tcon);
 421 NTSTATUS smb1srv_tcon_lookup(struct smbXsrv_connection *conn,
 422                              uint16_t tree_id, NTTIME now,
 423                              struct smbXsrv_tcon **tcon);
 424 NTSTATUS smb1srv_tcon_disconnect_all(struct smbXsrv_connection *conn);
 425 NTSTATUS smb2srv_tcon_table_init(struct smbXsrv_session *session);
 426 NTSTATUS smb2srv_tcon_create(struct smbXsrv_session *session,
 427                              NTTIME now,
 428                              struct smbXsrv_tcon **_tcon);
 429 NTSTATUS smb2srv_tcon_lookup(struct smbXsrv_session *session,
 430                              uint32_t tree_id, NTTIME now,
 431                              struct smbXsrv_tcon **tcon);
 432 NTSTATUS smb2srv_tcon_disconnect_all(struct smbXsrv_session *session);
 433 struct smbXsrv_tcon_global0;
 434 NTSTATUS smbXsrv_tcon_global_traverse(
 435                         int (*fn)(struct smbXsrv_tcon_global0 *, void *),
 436                         void *private_data);
 437
 438 NTSTATUS smbXsrv_open_global_init(void);
 439 NTSTATUS smbXsrv_open_create(struct smbXsrv_connection *conn,
 440                              struct auth_session_info *session_info,
 441                              NTTIME now,
 442                              struct smbXsrv_open **_open);
 443 uint32_t smbXsrv_open_hash(struct smbXsrv_open *_open);
 444 NTSTATUS smbXsrv_open_update(struct smbXsrv_open *_open);
 445 NTSTATUS smbXsrv_open_close(struct smbXsrv_open *op, NTTIME now);
 446 NTSTATUS smb1srv_open_table_init(struct smbXsrv_connection *conn);
 447 NTSTATUS smb1srv_open_lookup(struct smbXsrv_connection *conn,
 448                              uint16_t fnum, NTTIME now,
 449                              struct smbXsrv_open **_open);
 450 NTSTATUS smb2srv_open_table_init(struct smbXsrv_connection *conn);
 451 NTSTATUS smb2srv_open_lookup(struct smbXsrv_connection *conn,
 452                              uint64_t persistent_id,
 453                              uint64_t volatile_id,
 454                              NTTIME now,
 455                              struct smbXsrv_open **_open);
 456 NTSTATUS smb2srv_open_recreate(struct smbXsrv_connection *conn,
 457                                struct auth_session_info *session_info,
 458                                uint64_t persistent_id,
 459                                struct GUID create_guid,
 460                                NTTIME now,
 461                                struct smbXsrv_open **_open);
 462 struct smbXsrv_open_global0;
 463 NTSTATUS smbXsrv_open_global_traverse(
 464         int (*fn)(struct smbXsrv_open_global0 *, void *),
 465         void *private_data);
 466
 467 NTSTATUS smbXsrv_open_cleanup(uint64_t persistent_id);
 468
 469
 470 struct smbd_smb2_request {
 471         struct smbd_smb2_request *prev, *next;
 472
 473         struct smbd_server_connection *sconn;
 474
 475         /* the session the request operates on, maybe NULL */
 476         struct smbXsrv_session *session;
 477         uint64_t last_session_id;
 478
 479         /* the tcon the request operates on, maybe NULL */
 480         struct smbXsrv_tcon *tcon;
 481         uint32_t last_tid;
 482
 483         int current_idx;
 484         bool do_signing;
 485         bool do_encryption;
 486         struct tevent_timer *async_te;
 487         bool compound_related;
 488
 489         /*
 490          * the encryption key for the whole
 491          * compound chain
 492          */
 493         DATA_BLOB first_key;
 494         /*
 495          * the signing key for the last
 496          * request/response of a compound chain
 497          */
 498         DATA_BLOB last_key;
 499
 500         struct timeval request_time;
 501
 502         /* fake smb1 request. */
 503         struct smb_request *smb1req;
 504         struct files_struct *compat_chain_fsp;
 505
 506         /*
 507          * The sub request for async backend calls.
 508          * This is used for SMB2 Cancel.
 509          */
 510         struct tevent_req *subreq;
 511
 512 #define SMBD_SMB2_TF_IOV_OFS 0
 513 #define SMBD_SMB2_HDR_IOV_OFS 1
 514 #define SMBD_SMB2_BODY_IOV_OFS 2
 515 #define SMBD_SMB2_DYN_IOV_OFS 3
 516
 517 #define SMBD_SMB2_NUM_IOV_PER_REQ 4
 518
 519 #define SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,ofs) \
 520         (&req->dir.vector[(idx)+(ofs)])
 521
 522 #define SMBD_SMB2_IDX_TF_IOV(req,dir,idx) \
 523         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_TF_IOV_OFS)
 524 #define SMBD_SMB2_IDX_HDR_IOV(req,dir,idx) \
 525         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_HDR_IOV_OFS)
 526 #define SMBD_SMB2_IDX_BODY_IOV(req,dir,idx) \
 527         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_BODY_IOV_OFS)
 528 #define SMBD_SMB2_IDX_DYN_IOV(req,dir,idx) \
 529         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_DYN_IOV_OFS)
 530
 531 #define SMBD_SMB2_IN_TF_IOV(req)    SMBD_SMB2_IDX_TF_IOV(req,in,req->current_idx)
 532 #define SMBD_SMB2_IN_TF_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_TF_IOV(req)->iov_base)
 533 #define SMBD_SMB2_IN_HDR_IOV(req)    SMBD_SMB2_IDX_HDR_IOV(req,in,req->current_idx)
 534 #define SMBD_SMB2_IN_HDR_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_HDR_IOV(req)->iov_base)
 535 #define SMBD_SMB2_IN_BODY_IOV(req)   SMBD_SMB2_IDX_BODY_IOV(req,in,req->current_idx)
 536 #define SMBD_SMB2_IN_BODY_PTR(req)   (uint8_t *)(SMBD_SMB2_IN_BODY_IOV(req)->iov_base)
 537 #define SMBD_SMB2_IN_BODY_LEN(req)   (SMBD_SMB2_IN_BODY_IOV(req)->iov_len)
 538 #define SMBD_SMB2_IN_DYN_IOV(req)    SMBD_SMB2_IDX_DYN_IOV(req,in,req->current_idx)
 539 #define SMBD_SMB2_IN_DYN_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_DYN_IOV(req)->iov_base)
 540 #define SMBD_SMB2_IN_DYN_LEN(req)    (SMBD_SMB2_IN_DYN_IOV(req)->iov_len)
 541
 542 #define SMBD_SMB2_OUT_TF_IOV(req)   SMBD_SMB2_IDX_TF_IOV(req,out,req->current_idx)
 543 #define SMBD_SMB2_OUT_TF_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_TF_IOV(req)->iov_base)
 544 #define SMBD_SMB2_OUT_HDR_IOV(req)   SMBD_SMB2_IDX_HDR_IOV(req,out,req->current_idx)
 545 #define SMBD_SMB2_OUT_HDR_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_HDR_IOV(req)->iov_base)
 546 #define SMBD_SMB2_OUT_BODY_IOV(req)  SMBD_SMB2_IDX_BODY_IOV(req,out,req->current_idx)
 547 #define SMBD_SMB2_OUT_BODY_PTR(req)  (uint8_t *)(SMBD_SMB2_OUT_BODY_IOV(req)->iov_base)
 548 #define SMBD_SMB2_OUT_BODY_LEN(req)  (SMBD_SMB2_OUT_BODY_IOV(req)->iov_len)
 549 #define SMBD_SMB2_OUT_DYN_IOV(req)   SMBD_SMB2_IDX_DYN_IOV(req,out,req->current_idx)
 550 #define SMBD_SMB2_OUT_DYN_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_DYN_IOV(req)->iov_base)
 551 #define SMBD_SMB2_OUT_DYN_LEN(req)   (SMBD_SMB2_OUT_DYN_IOV(req)->iov_len)
 552
 553 #define SMBD_SMB2_SHORT_RECEIVEFILE_WRITE_LEN (SMB2_HDR_BODY + 0x30)
 554
 555         struct {
 556                 /*
 557                  * vector[0] TRANSPORT HEADER (empty)
 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 (optional)
 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         } in;
 577         struct {
 578                 /* the NBT header is not allocated */
 579                 uint8_t nbt_hdr[4];
 580                 /*
 581                  * vector[0] TRANSPORT HEADER
 582                  * .
 583                  * vector[1] SMB2_TRANSFORM (optional)
 584                  * vector[2] SMB2
 585                  * vector[3] fixed body
 586                  * vector[4] dynamic body
 587                  * .
 588                  * .
 589                  * .
 590                  * vector[5] SMB2_TRANSFORM (empty)
 591                  * vector[6] SMB2
 592                  * vector[7] fixed body
 593                  * vector[8] dynamic body
 594                  * .
 595                  * .
 596                  * .
 597                  */
 598                 struct iovec *vector;
 599                 int vector_count;
 600         } out;
 601 };
 602
 603 struct smbd_server_connection;
 604 struct user_struct;
 605
 606 struct pending_message_list;
 607 struct pending_auth_data;
 608
 609 struct user_struct {
 610         struct user_struct *next, *prev;
 611         uint64_t vuid; /* Tag for this entry. */
 612
 613         char *session_keystr; /* used by utmp and pam session code.
 614                                  TDB key string */
 615         int homes_snum;
 616
 617         struct auth_session_info *session_info;
 618
 619         struct smbXsrv_session *session;
 620 };
 621
 622 struct smbd_server_connection {
 623         int sock;
 624         const struct tsocket_address *local_address;
 625         const struct tsocket_address *remote_address;
 626         const char *remote_hostname;
 627         struct tevent_context *ev_ctx;
 628         struct messaging_context *msg_ctx;
 629         struct sys_notify_context *sys_notify_ctx;
 630         struct notify_context *notify_ctx;
 631         struct {
 632                 bool got_session;
 633         } nbt;
 634         bool using_smb2;
 635         int trans_num;
 636
 637         size_t num_users;
 638         struct user_struct *users;
 639
 640         size_t num_connections;
 641         struct connection_struct *connections;
 642
 643         size_t num_files;
 644         struct files_struct *files;
 645
 646         int real_max_open_files;
 647         struct fsp_singleton_cache fsp_fi_cache;
 648
 649         struct pending_message_list *deferred_open_queue;
 650
 651
 652         /* open directory handles. */
 653         struct {
 654                 struct bitmap *dptr_bmap;
 655                 struct dptr_struct *dirptrs;
 656                 int dirhandles_open;
 657         } searches;
 658
 659         uint64_t num_requests;
 660
 661         /* Current number of oplocks we have outstanding. */
 662         struct {
 663                 int32_t exclusive_open;
 664                 int32_t level_II_open;
 665                 struct kernel_oplocks *kernel_ops;
 666         } oplocks;
 667
 668         struct {
 669                 struct tevent_fd *fde;
 670
 671                 struct {
 672                         /*
 673                          * fd for the fcntl lock mutexing access to our sock
 674                          */
 675                         int socket_lock_fd;
 676
 677                         /*
 678                          * fd for the trusted pipe from
 679                          * echo handler child
 680                          */
 681                         int trusted_fd;
 682
 683                         /*
 684                          * fde for the trusted_fd
 685                          */
 686                         struct tevent_fd *trusted_fde;
 687
 688                         /*
 689                          * Reference count for the fcntl lock to
 690                          * allow recursive locks.
 691                          */
 692                         int ref_count;
 693                 } echo_handler;
 694
 695                 struct {
 696                         bool encrypted_passwords;
 697                         bool spnego;
 698                         struct auth4_context *auth_context;
 699                         bool done;
 700                         /*
 701                          * Size of the data we can receive. Set by us.
 702                          * Can be modified by the max xmit parameter.
 703                          */
 704                         int max_recv;
 705                 } negprot;
 706
 707                 struct {
 708                         uint16_t client_major;
 709                         uint16_t client_minor;
 710                         uint32_t client_cap_low;
 711                         uint32_t client_cap_high;
 712                 } unix_info;
 713
 714                 struct {
 715                         bool done_sesssetup;
 716                         /*
 717                          * Size of data we can send to client. Set
 718                          *  by the client for all protocols above CORE.
 719                          *  Set by us for CORE protocol.
 720                          */
 721                         int max_send;
 722                         uint64_t last_session_tag;
 723                 } sessions;
 724                 struct smb_signing_state *signing_state;
 725
 726                 struct notify_mid_map *notify_mid_maps;
 727
 728                 struct {
 729                         /* dlink list we store pending lock records on. */
 730                         struct blocking_lock_record *blocking_lock_queue;
 731                         /* dlink list we move cancelled lock records onto. */
 732                         struct blocking_lock_record *blocking_lock_cancelled_queue;
 733
 734                         /* The event that makes us process our blocking lock queue */
 735                         struct tevent_timer *brl_timeout;
 736
 737                         bool blocking_lock_unlock_state;
 738                         bool blocking_lock_cancel_state;
 739                 } locks;
 740         } smb1;
 741         struct {
 742                 struct tevent_queue *recv_queue;
 743                 struct tevent_queue *send_queue;
 744                 struct tstream_context *stream;
 745                 bool negprot_2ff;
 746                 struct {
 747                         /* The event that makes us process our blocking lock queue */
 748                         struct tevent_timer *brl_timeout;
 749                         bool blocking_lock_unlock_state;
 750                 } locks;
 751                 struct smbd_smb2_request *requests;
 752                 /*
 753                  * seqnum_low is the lowest sequence number
 754                  * we will accept.
 755                  */
 756                 uint64_t seqnum_low;
 757                 /*
 758                  * seqnum_range is the range of credits we have
 759                  * granted from the sequence windows starting
 760                  * at seqnum_low.
 761                  *
 762                  * This gets incremented when new credits are
 763                  * granted and gets decremented when the
 764                  * lowest sequence number is consumed
 765                  * (when seqnum_low gets incremented).
 766                  */
 767                 uint16_t seqnum_range;
 768                 /*
 769                  * credits_grantedThe number of credits we have currently granted
 770                  * to the client.
 771                  *
 772                  * This gets incremented when new credits are
 773                  * granted and gets decremented when any credit
 774                  * is comsumed.
 775                  *
 776                  * Note: the decrementing is different compared
 777                  *       to seqnum_range.
 778                  */
 779                 uint16_t credits_granted;
 780                 /*
 781                  * The maximum number of credits we will ever
 782                  * grant to the client.
 783                  *
 784                  * Typically we will only grant 1/16th of
 785                  * max_credits.
 786                  *
 787                  * This is the "server max credits" parameter.
 788                  */
 789                 uint16_t max_credits;
 790                 /*
 791                  * a bitmap of size max_credits
 792                  */
 793                 struct bitmap *credits_bitmap;
 794                 bool supports_multicredit;
 795                 uint32_t max_trans;
 796                 uint32_t max_read;
 797                 uint32_t max_write;
 798         } smb2;
 799
 800         struct smbXsrv_connection *conn;
 801 };
 802
 803 extern struct smbXsrv_connection *global_smbXsrv_connection;
 804
 805 void smbd_init_globals(void);