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                          struct smb_filename *smb_fname,
 159                          char **ppdata,
 160                          int *ret_data_len);
 161
 162 bool smbd_dirptr_get_entry(TALLOC_CTX *ctx,
 163                            struct dptr_struct *dirptr,
 164                            const char *mask,
 165                            uint32_t dirtype,
 166                            bool dont_descend,
 167                            bool ask_sharemode,
 168                            bool (*match_fn)(TALLOC_CTX *ctx,
 169                                             void *private_data,
 170                                             const char *dname,
 171                                             const char *mask,
 172                                             char **_fname),
 173                            bool (*mode_fn)(TALLOC_CTX *ctx,
 174                                            void *private_data,
 175                                            struct smb_filename *smb_fname,
 176                                            uint32_t *_mode),
 177                            void *private_data,
 178                            char **_fname,
 179                            struct smb_filename **_smb_fname,
 180                            uint32_t *_mode,
 181                            long *_prev_offset);
 182
 183 bool smbd_dirptr_lanman2_entry(TALLOC_CTX *ctx,
 184                                connection_struct *conn,
 185                                struct dptr_struct *dirptr,
 186                                uint16 flags2,
 187                                const char *path_mask,
 188                                uint32 dirtype,
 189                                int info_level,
 190                                int requires_resume_key,
 191                                bool dont_descend,
 192                                bool ask_sharemode,
 193                                uint8_t align,
 194                                bool do_pad,
 195                                char **ppdata,
 196                                char *base_data,
 197                                char *end_data,
 198                                int space_remaining,
 199                                bool *out_of_space,
 200                                bool *got_exact_match,
 201                                int *_last_entry_off,
 202                                struct ea_list *name_list);
 203
 204 NTSTATUS smbd_calculate_access_mask(connection_struct *conn,
 205                                     const struct smb_filename *smb_fname,
 206                                     bool use_privs,
 207                                     uint32_t access_mask,
 208                                     uint32_t *access_mask_out);
 209
 210 void smbd_notify_cancel_by_smbreq(const struct smb_request *smbreq);
 211
 212 void smbd_server_connection_terminate_ex(struct smbd_server_connection *sconn,
 213                                          const char *reason,
 214                                          const char *location);
 215 #define smbd_server_connection_terminate(sconn, reason) \
 216         smbd_server_connection_terminate_ex(sconn, reason, __location__)
 217
 218 const char *smb2_opcode_name(uint16_t opcode);
 219 bool smbd_is_smb2_header(const uint8_t *inbuf, size_t size);
 220
 221 void reply_smb2002(struct smb_request *req, uint16_t choice);
 222 void reply_smb20ff(struct smb_request *req, uint16_t choice);
 223 void smbd_smb2_first_negprot(struct smbd_server_connection *sconn,
 224                              uint8_t *inbuf, size_t size);
 225
 226 NTSTATUS smbd_smb2_request_error_ex(struct smbd_smb2_request *req,
 227                                     NTSTATUS status,
 228                                     DATA_BLOB *info,
 229                                     const char *location);
 230 #define smbd_smb2_request_error(req, status) \
 231         smbd_smb2_request_error_ex(req, status, NULL, __location__)
 232 NTSTATUS smbd_smb2_request_done_ex(struct smbd_smb2_request *req,
 233                                    NTSTATUS status,
 234                                    DATA_BLOB body, DATA_BLOB *dyn,
 235                                    const char *location);
 236 #define smbd_smb2_request_done(req, body, dyn) \
 237         smbd_smb2_request_done_ex(req, NT_STATUS_OK, body, dyn, __location__)
 238
 239 NTSTATUS smbd_smb2_send_oplock_break(struct smbd_server_connection *sconn,
 240                                      struct smbXsrv_session *session,
 241                                      struct smbXsrv_tcon *tcon,
 242                                      struct smbXsrv_open *op,
 243                                      uint8_t oplock_level);
 244
 245 NTSTATUS smbd_smb2_request_pending_queue(struct smbd_smb2_request *req,
 246                                          struct tevent_req *subreq,
 247                                          uint32_t defer_time);
 248
 249 struct smb_request *smbd_smb2_fake_smb_request(struct smbd_smb2_request *req);
 250 size_t smbd_smb2_unread_bytes(struct smbd_smb2_request *req);
 251 void remove_smb2_chained_fsp(files_struct *fsp);
 252
 253 NTSTATUS smbd_smb2_request_verify_creditcharge(struct smbd_smb2_request *req,
 254                                                uint32_t data_length);
 255
 256 NTSTATUS smbd_smb2_request_verify_sizes(struct smbd_smb2_request *req,
 257                                         size_t expected_body_size);
 258
 259 NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req);
 260 NTSTATUS smbd_smb2_request_process_sesssetup(struct smbd_smb2_request *req);
 261 NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req);
 262 NTSTATUS smbd_smb2_request_process_tcon(struct smbd_smb2_request *req);
 263 NTSTATUS smbd_smb2_request_process_tdis(struct smbd_smb2_request *req);
 264 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req);
 265 NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req);
 266 NTSTATUS smbd_smb2_request_process_flush(struct smbd_smb2_request *req);
 267 NTSTATUS smbd_smb2_request_process_read(struct smbd_smb2_request *req);
 268 NTSTATUS smb2_read_complete(struct tevent_req *req, ssize_t nread, int err);
 269 NTSTATUS smbd_smb2_request_process_write(struct smbd_smb2_request *req);
 270 NTSTATUS smb2_write_complete(struct tevent_req *req, ssize_t nwritten, int err);
 271 NTSTATUS smb2_write_complete_nosync(struct tevent_req *req, ssize_t nwritten,
 272                                     int err);
 273 NTSTATUS smbd_smb2_request_process_lock(struct smbd_smb2_request *req);
 274 NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req);
 275 NTSTATUS smbd_smb2_request_process_keepalive(struct smbd_smb2_request *req);
 276 NTSTATUS smbd_smb2_request_process_find(struct smbd_smb2_request *req);
 277 NTSTATUS smbd_smb2_request_process_notify(struct smbd_smb2_request *req);
 278 NTSTATUS smbd_smb2_request_process_getinfo(struct smbd_smb2_request *req);
 279 NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req);
 280 NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req);
 281 NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req);
 282 void smbd_smb2_request_dispatch_immediate(struct tevent_context *ctx,
 283                                 struct tevent_immediate *im,
 284                                 void *private_data);
 285
 286 /* SMB1 -> SMB2 glue. */
 287 void send_break_message_smb2(files_struct *fsp, int level);
 288 struct blocking_lock_record *get_pending_smb2req_blr(struct smbd_smb2_request *smb2req);
 289 bool push_blocking_lock_request_smb2( struct byte_range_lock *br_lck,
 290                                 struct smb_request *req,
 291                                 files_struct *fsp,
 292                                 int lock_timeout,
 293                                 int lock_num,
 294                                 uint64_t smblctx,
 295                                 enum brl_type lock_type,
 296                                 enum brl_flavour lock_flav,
 297                                 uint64_t offset,
 298                                 uint64_t count,
 299                                 uint64_t blocking_smblctx);
 300 void process_blocking_lock_queue_smb2(
 301         struct smbd_server_connection *sconn, struct timeval tv_curr);
 302 void cancel_pending_lock_requests_by_fid_smb2(files_struct *fsp,
 303                         struct byte_range_lock *br_lck,
 304                         enum file_close_type close_type);
 305 /* From smbd/smb2_create.c */
 306 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level);
 307 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
 308                         struct timeval *p_request_time,
 309                         void **pp_state);
 310 bool open_was_deferred_smb2(struct smbd_server_connection *sconn,
 311                             uint64_t mid);
 312 void remove_deferred_open_message_smb2(
 313         struct smbd_server_connection *sconn, uint64_t mid);
 314 bool schedule_deferred_open_message_smb2(
 315         struct smbd_server_connection *sconn, uint64_t mid);
 316 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
 317                         struct timeval request_time,
 318                         struct timeval timeout,
 319                         struct file_id id,
 320                         char *private_data,
 321                         size_t priv_len);
 322
 323 struct smbXsrv_connection {
 324         struct smbd_server_connection *sconn;
 325
 326         const struct tsocket_address *local_address;
 327         const struct tsocket_address *remote_address;
 328         const char *remote_hostname;
 329
 330         struct tevent_context *ev_ctx;
 331         struct messaging_context *msg_ctx;
 332
 333         enum protocol_types protocol;
 334
 335         struct {
 336                 struct {
 337                         uint32_t capabilities;
 338                         struct GUID guid;
 339                         uint16_t security_mode;
 340                         uint16_t num_dialects;
 341                         uint16_t *dialects;
 342                 } client;
 343                 struct {
 344                         uint32_t capabilities;
 345                         struct GUID guid;
 346                         uint16_t security_mode;
 347                         uint16_t dialect;
 348                         uint32_t max_trans;
 349                         uint32_t max_read;
 350                         uint32_t max_write;
 351                 } server;
 352         } smb2;
 353
 354         struct msg_state *msg_state;
 355
 356         /*
 357          * Link into libasys for asynchronous operations
 358          */
 359         struct asys_context *asys_ctx;
 360         struct tevent_fd *asys_fde;
 361
 362         uint64_t smbd_idle_profstamp;
 363
 364         /*
 365          * this session_table is used for SMB1 and SMB2,
 366          */
 367         struct smbXsrv_session_table *session_table;
 368         /*
 369          * this tcon_table is only used for SMB1.
 370          */
 371         struct smbXsrv_tcon_table *tcon_table;
 372         /*
 373          * this open_table is used for SMB1 and SMB2,
 374          * because we have a global sconn->real_max_open_files
 375          * limit.
 376          */
 377         struct smbXsrv_open_table *open_table;
 378 };
 379
 380 NTSTATUS smbXsrv_version_global_init(const struct server_id *server_id);
 381 uint32_t smbXsrv_version_global_current(void);
 382
 383 NTSTATUS smbXsrv_connection_init_tables(struct smbXsrv_connection *conn,
 384                                         enum protocol_types protocol);
 385
 386 NTSTATUS smbXsrv_session_global_init(void);
 387 NTSTATUS smbXsrv_session_create(struct smbXsrv_connection *conn,
 388                                 NTTIME now,
 389                                 struct smbXsrv_session **_session);
 390 NTSTATUS smbXsrv_session_update(struct smbXsrv_session *session);
 391 NTSTATUS smbXsrv_session_logoff(struct smbXsrv_session *session);
 392 NTSTATUS smbXsrv_session_logoff_all(struct smbXsrv_connection *conn);
 393 NTSTATUS smb1srv_session_table_init(struct smbXsrv_connection *conn);
 394 NTSTATUS smb1srv_session_lookup(struct smbXsrv_connection *conn,
 395                                 uint16_t vuid, NTTIME now,
 396                                 struct smbXsrv_session **session);
 397 NTSTATUS smb2srv_session_table_init(struct smbXsrv_connection *conn);
 398 NTSTATUS smb2srv_session_lookup(struct smbXsrv_connection *conn,
 399                                 uint64_t session_id, NTTIME now,
 400                                 struct smbXsrv_session **session);
 401 struct smbXsrv_session_global0;
 402 NTSTATUS smbXsrv_session_global_traverse(
 403                         int (*fn)(struct smbXsrv_session_global0 *, void *),
 404                         void *private_data);
 405 struct tevent_req *smb2srv_session_close_previous_send(TALLOC_CTX *mem_ctx,
 406                                         struct tevent_context *ev,
 407                                         struct smbXsrv_connection *conn,
 408                                         struct auth_session_info *session_info,
 409                                         uint64_t previous_session_id,
 410                                         uint64_t current_session_id);
 411 NTSTATUS smb2srv_session_close_previous_recv(struct tevent_req *req);
 412
 413 NTSTATUS smbXsrv_tcon_global_init(void);
 414 NTSTATUS smbXsrv_tcon_update(struct smbXsrv_tcon *tcon);
 415 NTSTATUS smbXsrv_tcon_disconnect(struct smbXsrv_tcon *tcon, uint64_t vuid);
 416 NTSTATUS smb1srv_tcon_table_init(struct smbXsrv_connection *conn);
 417 NTSTATUS smb1srv_tcon_create(struct smbXsrv_connection *conn,
 418                              NTTIME now,
 419                              struct smbXsrv_tcon **_tcon);
 420 NTSTATUS smb1srv_tcon_lookup(struct smbXsrv_connection *conn,
 421                              uint16_t tree_id, NTTIME now,
 422                              struct smbXsrv_tcon **tcon);
 423 NTSTATUS smb1srv_tcon_disconnect_all(struct smbXsrv_connection *conn);
 424 NTSTATUS smb2srv_tcon_table_init(struct smbXsrv_session *session);
 425 NTSTATUS smb2srv_tcon_create(struct smbXsrv_session *session,
 426                              NTTIME now,
 427                              struct smbXsrv_tcon **_tcon);
 428 NTSTATUS smb2srv_tcon_lookup(struct smbXsrv_session *session,
 429                              uint32_t tree_id, NTTIME now,
 430                              struct smbXsrv_tcon **tcon);
 431 NTSTATUS smb2srv_tcon_disconnect_all(struct smbXsrv_session *session);
 432 struct smbXsrv_tcon_global0;
 433 NTSTATUS smbXsrv_tcon_global_traverse(
 434                         int (*fn)(struct smbXsrv_tcon_global0 *, void *),
 435                         void *private_data);
 436
 437 NTSTATUS smbXsrv_open_global_init(void);
 438 NTSTATUS smbXsrv_open_create(struct smbXsrv_connection *conn,
 439                              struct auth_session_info *session_info,
 440                              NTTIME now,
 441                              struct smbXsrv_open **_open);
 442 uint32_t smbXsrv_open_hash(struct smbXsrv_open *_open);
 443 NTSTATUS smbXsrv_open_update(struct smbXsrv_open *_open);
 444 NTSTATUS smbXsrv_open_close(struct smbXsrv_open *op, NTTIME now);
 445 NTSTATUS smb1srv_open_table_init(struct smbXsrv_connection *conn);
 446 NTSTATUS smb1srv_open_lookup(struct smbXsrv_connection *conn,
 447                              uint16_t fnum, NTTIME now,
 448                              struct smbXsrv_open **_open);
 449 NTSTATUS smb2srv_open_table_init(struct smbXsrv_connection *conn);
 450 NTSTATUS smb2srv_open_lookup(struct smbXsrv_connection *conn,
 451                              uint64_t persistent_id,
 452                              uint64_t volatile_id,
 453                              NTTIME now,
 454                              struct smbXsrv_open **_open);
 455 NTSTATUS smb2srv_open_recreate(struct smbXsrv_connection *conn,
 456                                struct auth_session_info *session_info,
 457                                uint64_t persistent_id,
 458                                struct GUID create_guid,
 459                                NTTIME now,
 460                                struct smbXsrv_open **_open);
 461 struct smbXsrv_open_global0;
 462 NTSTATUS smbXsrv_open_global_traverse(
 463         int (*fn)(struct smbXsrv_open_global0 *, void *),
 464         void *private_data);
 465
 466 NTSTATUS smbXsrv_open_cleanup(uint64_t persistent_id);
 467
 468
 469 struct smbd_smb2_request {
 470         struct smbd_smb2_request *prev, *next;
 471
 472         struct smbd_server_connection *sconn;
 473
 474         /* the session the request operates on, maybe NULL */
 475         struct smbXsrv_session *session;
 476         uint64_t last_session_id;
 477
 478         /* the tcon the request operates on, maybe NULL */
 479         struct smbXsrv_tcon *tcon;
 480         uint32_t last_tid;
 481
 482         int current_idx;
 483         bool do_signing;
 484         bool do_encryption;
 485         struct tevent_timer *async_te;
 486         bool compound_related;
 487
 488         /*
 489          * the encryption key for the whole
 490          * compound chain
 491          */
 492         DATA_BLOB first_key;
 493         /*
 494          * the signing key for the last
 495          * request/response of a compound chain
 496          */
 497         DATA_BLOB last_key;
 498
 499         struct timeval request_time;
 500
 501         /* fake smb1 request. */
 502         struct smb_request *smb1req;
 503         struct files_struct *compat_chain_fsp;
 504
 505         /*
 506          * The sub request for async backend calls.
 507          * This is used for SMB2 Cancel.
 508          */
 509         struct tevent_req *subreq;
 510
 511 #define SMBD_SMB2_TF_IOV_OFS 0
 512 #define SMBD_SMB2_HDR_IOV_OFS 1
 513 #define SMBD_SMB2_BODY_IOV_OFS 2
 514 #define SMBD_SMB2_DYN_IOV_OFS 3
 515
 516 #define SMBD_SMB2_NUM_IOV_PER_REQ 4
 517
 518 #define SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,ofs) \
 519         (&req->dir.vector[(idx)+(ofs)])
 520
 521 #define SMBD_SMB2_IDX_TF_IOV(req,dir,idx) \
 522         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_TF_IOV_OFS)
 523 #define SMBD_SMB2_IDX_HDR_IOV(req,dir,idx) \
 524         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_HDR_IOV_OFS)
 525 #define SMBD_SMB2_IDX_BODY_IOV(req,dir,idx) \
 526         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_BODY_IOV_OFS)
 527 #define SMBD_SMB2_IDX_DYN_IOV(req,dir,idx) \
 528         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_DYN_IOV_OFS)
 529
 530 #define SMBD_SMB2_IN_TF_IOV(req)    SMBD_SMB2_IDX_TF_IOV(req,in,req->current_idx)
 531 #define SMBD_SMB2_IN_TF_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_TF_IOV(req)->iov_base)
 532 #define SMBD_SMB2_IN_HDR_IOV(req)    SMBD_SMB2_IDX_HDR_IOV(req,in,req->current_idx)
 533 #define SMBD_SMB2_IN_HDR_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_HDR_IOV(req)->iov_base)
 534 #define SMBD_SMB2_IN_BODY_IOV(req)   SMBD_SMB2_IDX_BODY_IOV(req,in,req->current_idx)
 535 #define SMBD_SMB2_IN_BODY_PTR(req)   (uint8_t *)(SMBD_SMB2_IN_BODY_IOV(req)->iov_base)
 536 #define SMBD_SMB2_IN_BODY_LEN(req)   (SMBD_SMB2_IN_BODY_IOV(req)->iov_len)
 537 #define SMBD_SMB2_IN_DYN_IOV(req)    SMBD_SMB2_IDX_DYN_IOV(req,in,req->current_idx)
 538 #define SMBD_SMB2_IN_DYN_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_DYN_IOV(req)->iov_base)
 539 #define SMBD_SMB2_IN_DYN_LEN(req)    (SMBD_SMB2_IN_DYN_IOV(req)->iov_len)
 540
 541 #define SMBD_SMB2_OUT_TF_IOV(req)   SMBD_SMB2_IDX_TF_IOV(req,out,req->current_idx)
 542 #define SMBD_SMB2_OUT_TF_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_TF_IOV(req)->iov_base)
 543 #define SMBD_SMB2_OUT_HDR_IOV(req)   SMBD_SMB2_IDX_HDR_IOV(req,out,req->current_idx)
 544 #define SMBD_SMB2_OUT_HDR_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_HDR_IOV(req)->iov_base)
 545 #define SMBD_SMB2_OUT_BODY_IOV(req)  SMBD_SMB2_IDX_BODY_IOV(req,out,req->current_idx)
 546 #define SMBD_SMB2_OUT_BODY_PTR(req)  (uint8_t *)(SMBD_SMB2_OUT_BODY_IOV(req)->iov_base)
 547 #define SMBD_SMB2_OUT_BODY_LEN(req)  (SMBD_SMB2_OUT_BODY_IOV(req)->iov_len)
 548 #define SMBD_SMB2_OUT_DYN_IOV(req)   SMBD_SMB2_IDX_DYN_IOV(req,out,req->current_idx)
 549 #define SMBD_SMB2_OUT_DYN_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_DYN_IOV(req)->iov_base)
 550 #define SMBD_SMB2_OUT_DYN_LEN(req)   (SMBD_SMB2_OUT_DYN_IOV(req)->iov_len)
 551
 552 #define SMBD_SMB2_SHORT_RECEIVEFILE_WRITE_LEN (SMB2_HDR_BODY + 0x30)
 553
 554         struct {
 555                 /*
 556                  * vector[0] TRANSPORT HEADER (empty)
 557                  * .
 558                  * vector[1] SMB2_TRANSFORM (optional)
 559                  * vector[2] SMB2
 560                  * vector[3] fixed body
 561                  * vector[4] dynamic body
 562                  * .
 563                  * .
 564                  * .
 565                  * vector[5] SMB2_TRANSFORM (optional)
 566                  * vector[6] SMB2
 567                  * vector[7] fixed body
 568                  * vector[8] dynamic body
 569                  * .
 570                  * .
 571                  * .
 572                  */
 573                 struct iovec *vector;
 574                 int vector_count;
 575         } in;
 576         struct {
 577                 /* the NBT header is not allocated */
 578                 uint8_t nbt_hdr[4];
 579                 /*
 580                  * vector[0] TRANSPORT HEADER
 581                  * .
 582                  * vector[1] SMB2_TRANSFORM (optional)
 583                  * vector[2] SMB2
 584                  * vector[3] fixed body
 585                  * vector[4] dynamic body
 586                  * .
 587                  * .
 588                  * .
 589                  * vector[5] SMB2_TRANSFORM (empty)
 590                  * vector[6] SMB2
 591                  * vector[7] fixed body
 592                  * vector[8] dynamic body
 593                  * .
 594                  * .
 595                  * .
 596                  */
 597                 struct iovec *vector;
 598                 int vector_count;
 599         } out;
 600 };
 601
 602 struct smbd_server_connection;
 603 struct user_struct;
 604
 605 struct pending_message_list;
 606 struct pending_auth_data;
 607
 608 struct user_struct {
 609         struct user_struct *next, *prev;
 610         uint64_t vuid; /* Tag for this entry. */
 611
 612         char *session_keystr; /* used by utmp and pam session code.
 613                                  TDB key string */
 614         int homes_snum;
 615
 616         struct auth_session_info *session_info;
 617
 618         struct smbXsrv_session *session;
 619 };
 620
 621 struct smbd_server_connection {
 622         int sock;
 623         const struct tsocket_address *local_address;
 624         const struct tsocket_address *remote_address;
 625         const char *remote_hostname;
 626         struct tevent_context *ev_ctx;
 627         struct messaging_context *msg_ctx;
 628         struct sys_notify_context *sys_notify_ctx;
 629         struct notify_context *notify_ctx;
 630         struct {
 631                 bool got_session;
 632         } nbt;
 633         bool using_smb2;
 634         int trans_num;
 635
 636         size_t num_users;
 637         struct user_struct *users;
 638
 639         size_t num_connections;
 640         struct connection_struct *connections;
 641
 642         size_t num_files;
 643         struct files_struct *files;
 644
 645         int real_max_open_files;
 646         struct fsp_singleton_cache fsp_fi_cache;
 647
 648         struct pending_message_list *deferred_open_queue;
 649
 650
 651         /* open directory handles. */
 652         struct {
 653                 struct bitmap *dptr_bmap;
 654                 struct dptr_struct *dirptrs;
 655                 int dirhandles_open;
 656         } searches;
 657
 658         uint64_t num_requests;
 659
 660         /* Current number of oplocks we have outstanding. */
 661         struct {
 662                 int32_t exclusive_open;
 663                 int32_t level_II_open;
 664                 struct kernel_oplocks *kernel_ops;
 665         } oplocks;
 666
 667         struct {
 668                 struct tevent_fd *fde;
 669
 670                 struct {
 671                         /*
 672                          * fd for the fcntl lock mutexing access to our sock
 673                          */
 674                         int socket_lock_fd;
 675
 676                         /*
 677                          * fd for the trusted pipe from
 678                          * echo handler child
 679                          */
 680                         int trusted_fd;
 681
 682                         /*
 683                          * fde for the trusted_fd
 684                          */
 685                         struct tevent_fd *trusted_fde;
 686
 687                         /*
 688                          * Reference count for the fcntl lock to
 689                          * allow recursive locks.
 690                          */
 691                         int ref_count;
 692                 } echo_handler;
 693
 694                 struct {
 695                         bool encrypted_passwords;
 696                         bool spnego;
 697                         struct auth4_context *auth_context;
 698                         bool done;
 699                         /*
 700                          * Size of the data we can receive. Set by us.
 701                          * Can be modified by the max xmit parameter.
 702                          */
 703                         int max_recv;
 704                 } negprot;
 705
 706                 struct {
 707                         uint16_t client_major;
 708                         uint16_t client_minor;
 709                         uint32_t client_cap_low;
 710                         uint32_t client_cap_high;
 711                 } unix_info;
 712
 713                 struct {
 714                         bool done_sesssetup;
 715                         /*
 716                          * Size of data we can send to client. Set
 717                          *  by the client for all protocols above CORE.
 718                          *  Set by us for CORE protocol.
 719                          */
 720                         int max_send;
 721                         uint64_t last_session_tag;
 722                 } sessions;
 723                 struct smb_signing_state *signing_state;
 724
 725                 struct notify_mid_map *notify_mid_maps;
 726
 727                 struct {
 728                         /* dlink list we store pending lock records on. */
 729                         struct blocking_lock_record *blocking_lock_queue;
 730                         /* dlink list we move cancelled lock records onto. */
 731                         struct blocking_lock_record *blocking_lock_cancelled_queue;
 732
 733                         /* The event that makes us process our blocking lock queue */
 734                         struct tevent_timer *brl_timeout;
 735
 736                         bool blocking_lock_unlock_state;
 737                         bool blocking_lock_cancel_state;
 738                 } locks;
 739         } smb1;
 740         struct {
 741                 struct tevent_queue *recv_queue;
 742                 struct tevent_queue *send_queue;
 743                 struct tstream_context *stream;
 744                 bool negprot_2ff;
 745                 struct {
 746                         /* The event that makes us process our blocking lock queue */
 747                         struct tevent_timer *brl_timeout;
 748                         bool blocking_lock_unlock_state;
 749                 } locks;
 750                 struct smbd_smb2_request *requests;
 751                 /*
 752                  * seqnum_low is the lowest sequence number
 753                  * we will accept.
 754                  */
 755                 uint64_t seqnum_low;
 756                 /*
 757                  * seqnum_range is the range of credits we have
 758                  * granted from the sequence windows starting
 759                  * at seqnum_low.
 760                  *
 761                  * This gets incremented when new credits are
 762                  * granted and gets decremented when the
 763                  * lowest sequence number is consumed
 764                  * (when seqnum_low gets incremented).
 765                  */
 766                 uint16_t seqnum_range;
 767                 /*
 768                  * credits_grantedThe number of credits we have currently granted
 769                  * to the client.
 770                  *
 771                  * This gets incremented when new credits are
 772                  * granted and gets decremented when any credit
 773                  * is comsumed.
 774                  *
 775                  * Note: the decrementing is different compared
 776                  *       to seqnum_range.
 777                  */
 778                 uint16_t credits_granted;
 779                 /*
 780                  * The maximum number of credits we will ever
 781                  * grant to the client.
 782                  *
 783                  * Typically we will only grant 1/16th of
 784                  * max_credits.
 785                  *
 786                  * This is the "server max credits" parameter.
 787                  */
 788                 uint16_t max_credits;
 789                 /*
 790                  * a bitmap of size max_credits
 791                  */
 792                 struct bitmap *credits_bitmap;
 793                 bool supports_multicredit;
 794                 uint32_t max_trans;
 795                 uint32_t max_read;
 796                 uint32_t max_write;
 797         } smb2;
 798
 799         struct smbXsrv_connection *conn;
 800 };
 801
 802 extern struct smbXsrv_connection *global_smbXsrv_connection;
 803
 804 void smbd_init_globals(void);