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                          size_t *fixed_portion,
 160                          struct smb_filename *smb_fname,
 161                          char **ppdata,
 162                          int *ret_data_len);
 163
 164 bool smbd_dirptr_get_entry(TALLOC_CTX *ctx,
 165                            struct dptr_struct *dirptr,
 166                            const char *mask,
 167                            uint32_t dirtype,
 168                            bool dont_descend,
 169                            bool ask_sharemode,
 170                            bool (*match_fn)(TALLOC_CTX *ctx,
 171                                             void *private_data,
 172                                             const char *dname,
 173                                             const char *mask,
 174                                             char **_fname),
 175                            bool (*mode_fn)(TALLOC_CTX *ctx,
 176                                            void *private_data,
 177                                            struct smb_filename *smb_fname,
 178                                            uint32_t *_mode),
 179                            void *private_data,
 180                            char **_fname,
 181                            struct smb_filename **_smb_fname,
 182                            uint32_t *_mode,
 183                            long *_prev_offset);
 184
 185 bool smbd_dirptr_lanman2_entry(TALLOC_CTX *ctx,
 186                                connection_struct *conn,
 187                                struct dptr_struct *dirptr,
 188                                uint16 flags2,
 189                                const char *path_mask,
 190                                uint32 dirtype,
 191                                int info_level,
 192                                int requires_resume_key,
 193                                bool dont_descend,
 194                                bool ask_sharemode,
 195                                uint8_t align,
 196                                bool do_pad,
 197                                char **ppdata,
 198                                char *base_data,
 199                                char *end_data,
 200                                int space_remaining,
 201                                bool *out_of_space,
 202                                bool *got_exact_match,
 203                                int *_last_entry_off,
 204                                struct ea_list *name_list);
 205
 206 NTSTATUS smbd_calculate_access_mask(connection_struct *conn,
 207                                     const struct smb_filename *smb_fname,
 208                                     bool use_privs,
 209                                     uint32_t access_mask,
 210                                     uint32_t *access_mask_out);
 211
 212 void smbd_notify_cancel_by_smbreq(const struct smb_request *smbreq);
 213
 214 void smbd_server_connection_terminate_ex(struct smbd_server_connection *sconn,
 215                                          const char *reason,
 216                                          const char *location);
 217 #define smbd_server_connection_terminate(sconn, reason) \
 218         smbd_server_connection_terminate_ex(sconn, reason, __location__)
 219
 220 const char *smb2_opcode_name(uint16_t opcode);
 221 bool smbd_is_smb2_header(const uint8_t *inbuf, size_t size);
 222
 223 void reply_smb2002(struct smb_request *req, uint16_t choice);
 224 void reply_smb20ff(struct smb_request *req, uint16_t choice);
 225 void smbd_smb2_first_negprot(struct smbd_server_connection *sconn,
 226                              uint8_t *inbuf, size_t size);
 227
 228 NTSTATUS smbd_smb2_request_error_ex(struct smbd_smb2_request *req,
 229                                     NTSTATUS status,
 230                                     DATA_BLOB *info,
 231                                     const char *location);
 232 #define smbd_smb2_request_error(req, status) \
 233         smbd_smb2_request_error_ex(req, status, NULL, __location__)
 234 NTSTATUS smbd_smb2_request_done_ex(struct smbd_smb2_request *req,
 235                                    NTSTATUS status,
 236                                    DATA_BLOB body, DATA_BLOB *dyn,
 237                                    const char *location);
 238 #define smbd_smb2_request_done(req, body, dyn) \
 239         smbd_smb2_request_done_ex(req, NT_STATUS_OK, body, dyn, __location__)
 240
 241 NTSTATUS smbd_smb2_send_oplock_break(struct smbd_server_connection *sconn,
 242                                      struct smbXsrv_session *session,
 243                                      struct smbXsrv_tcon *tcon,
 244                                      struct smbXsrv_open *op,
 245                                      uint8_t oplock_level);
 246
 247 NTSTATUS smbd_smb2_request_pending_queue(struct smbd_smb2_request *req,
 248                                          struct tevent_req *subreq,
 249                                          uint32_t defer_time);
 250
 251 struct smb_request *smbd_smb2_fake_smb_request(struct smbd_smb2_request *req);
 252 size_t smbd_smb2_unread_bytes(struct smbd_smb2_request *req);
 253 void remove_smb2_chained_fsp(files_struct *fsp);
 254
 255 NTSTATUS smbd_smb2_request_verify_creditcharge(struct smbd_smb2_request *req,
 256                                                uint32_t data_length);
 257
 258 NTSTATUS smbd_smb2_request_verify_sizes(struct smbd_smb2_request *req,
 259                                         size_t expected_body_size);
 260
 261 NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req);
 262 NTSTATUS smbd_smb2_request_process_sesssetup(struct smbd_smb2_request *req);
 263 NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req);
 264 NTSTATUS smbd_smb2_request_process_tcon(struct smbd_smb2_request *req);
 265 NTSTATUS smbd_smb2_request_process_tdis(struct smbd_smb2_request *req);
 266 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req);
 267 NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req);
 268 NTSTATUS smbd_smb2_request_process_flush(struct smbd_smb2_request *req);
 269 NTSTATUS smbd_smb2_request_process_read(struct smbd_smb2_request *req);
 270 NTSTATUS smb2_read_complete(struct tevent_req *req, ssize_t nread, int err);
 271 NTSTATUS smbd_smb2_request_process_write(struct smbd_smb2_request *req);
 272 NTSTATUS smb2_write_complete(struct tevent_req *req, ssize_t nwritten, int err);
 273 NTSTATUS smb2_write_complete_nosync(struct tevent_req *req, ssize_t nwritten,
 274                                     int err);
 275 NTSTATUS smbd_smb2_request_process_lock(struct smbd_smb2_request *req);
 276 NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req);
 277 NTSTATUS smbd_smb2_request_process_keepalive(struct smbd_smb2_request *req);
 278 NTSTATUS smbd_smb2_request_process_find(struct smbd_smb2_request *req);
 279 NTSTATUS smbd_smb2_request_process_notify(struct smbd_smb2_request *req);
 280 NTSTATUS smbd_smb2_request_process_getinfo(struct smbd_smb2_request *req);
 281 NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req);
 282 NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req);
 283 NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req);
 284 void smbd_smb2_request_dispatch_immediate(struct tevent_context *ctx,
 285                                 struct tevent_immediate *im,
 286                                 void *private_data);
 287
 288 /* SMB1 -> SMB2 glue. */
 289 void send_break_message_smb2(files_struct *fsp, int level);
 290 struct blocking_lock_record *get_pending_smb2req_blr(struct smbd_smb2_request *smb2req);
 291 bool push_blocking_lock_request_smb2( struct byte_range_lock *br_lck,
 292                                 struct smb_request *req,
 293                                 files_struct *fsp,
 294                                 int lock_timeout,
 295                                 int lock_num,
 296                                 uint64_t smblctx,
 297                                 enum brl_type lock_type,
 298                                 enum brl_flavour lock_flav,
 299                                 uint64_t offset,
 300                                 uint64_t count,
 301                                 uint64_t blocking_smblctx);
 302 void process_blocking_lock_queue_smb2(
 303         struct smbd_server_connection *sconn, struct timeval tv_curr);
 304 void cancel_pending_lock_requests_by_fid_smb2(files_struct *fsp,
 305                         struct byte_range_lock *br_lck,
 306                         enum file_close_type close_type);
 307 /* From smbd/smb2_create.c */
 308 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level);
 309 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
 310                         struct timeval *p_request_time,
 311                         void **pp_state);
 312 bool open_was_deferred_smb2(struct smbd_server_connection *sconn,
 313                             uint64_t mid);
 314 void remove_deferred_open_message_smb2(
 315         struct smbd_server_connection *sconn, uint64_t mid);
 316 bool schedule_deferred_open_message_smb2(
 317         struct smbd_server_connection *sconn, uint64_t mid);
 318 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
 319                         struct timeval request_time,
 320                         struct timeval timeout,
 321                         struct file_id id,
 322                         char *private_data,
 323                         size_t priv_len);
 324
 325 struct smbXsrv_connection {
 326         struct smbd_server_connection *sconn;
 327
 328         const struct tsocket_address *local_address;
 329         const struct tsocket_address *remote_address;
 330         const char *remote_hostname;
 331
 332         struct tevent_context *ev_ctx;
 333         struct messaging_context *msg_ctx;
 334
 335         enum protocol_types protocol;
 336
 337         struct {
 338                 struct {
 339                         uint32_t capabilities;
 340                         struct GUID guid;
 341                         uint16_t security_mode;
 342                         uint16_t num_dialects;
 343                         uint16_t *dialects;
 344                 } client;
 345                 struct {
 346                         uint32_t capabilities;
 347                         struct GUID guid;
 348                         uint16_t security_mode;
 349                         uint16_t dialect;
 350                         uint32_t max_trans;
 351                         uint32_t max_read;
 352                         uint32_t max_write;
 353                 } server;
 354         } smb2;
 355
 356         struct msg_state *msg_state;
 357
 358         /*
 359          * Link into libasys for asynchronous operations
 360          */
 361         struct asys_context *asys_ctx;
 362         struct tevent_fd *asys_fde;
 363
 364         uint64_t smbd_idle_profstamp;
 365
 366         /*
 367          * this session_table is used for SMB1 and SMB2,
 368          */
 369         struct smbXsrv_session_table *session_table;
 370         uint64_t last_session_id;
 371         /*
 372          * this tcon_table is only used for SMB1.
 373          */
 374         struct smbXsrv_tcon_table *tcon_table;
 375         /*
 376          * this open_table is used for SMB1 and SMB2,
 377          * because we have a global sconn->real_max_open_files
 378          * limit.
 379          */
 380         struct smbXsrv_open_table *open_table;
 381 };
 382
 383 NTSTATUS smbXsrv_version_global_init(const struct server_id *server_id);
 384 uint32_t smbXsrv_version_global_current(void);
 385
 386 NTSTATUS smbXsrv_connection_init_tables(struct smbXsrv_connection *conn,
 387                                         enum protocol_types protocol);
 388
 389 NTSTATUS smbXsrv_session_global_init(void);
 390 NTSTATUS smbXsrv_session_create(struct smbXsrv_connection *conn,
 391                                 NTTIME now,
 392                                 struct smbXsrv_session **_session);
 393 NTSTATUS smbXsrv_session_update(struct smbXsrv_session *session);
 394 NTSTATUS smbXsrv_session_logoff(struct smbXsrv_session *session);
 395 NTSTATUS smbXsrv_session_logoff_all(struct smbXsrv_connection *conn);
 396 NTSTATUS smb1srv_session_table_init(struct smbXsrv_connection *conn);
 397 NTSTATUS smb1srv_session_lookup(struct smbXsrv_connection *conn,
 398                                 uint16_t vuid, NTTIME now,
 399                                 struct smbXsrv_session **session);
 400 NTSTATUS smb2srv_session_table_init(struct smbXsrv_connection *conn);
 401 NTSTATUS smb2srv_session_lookup(struct smbXsrv_connection *conn,
 402                                 uint64_t session_id, NTTIME now,
 403                                 struct smbXsrv_session **session);
 404 struct smbXsrv_session_global0;
 405 NTSTATUS smbXsrv_session_global_traverse(
 406                         int (*fn)(struct smbXsrv_session_global0 *, void *),
 407                         void *private_data);
 408 struct tevent_req *smb2srv_session_close_previous_send(TALLOC_CTX *mem_ctx,
 409                                         struct tevent_context *ev,
 410                                         struct smbXsrv_connection *conn,
 411                                         struct auth_session_info *session_info,
 412                                         uint64_t previous_session_id,
 413                                         uint64_t current_session_id);
 414 NTSTATUS smb2srv_session_close_previous_recv(struct tevent_req *req);
 415
 416 NTSTATUS smbXsrv_tcon_global_init(void);
 417 NTSTATUS smbXsrv_tcon_update(struct smbXsrv_tcon *tcon);
 418 NTSTATUS smbXsrv_tcon_disconnect(struct smbXsrv_tcon *tcon, uint64_t vuid);
 419 NTSTATUS smb1srv_tcon_table_init(struct smbXsrv_connection *conn);
 420 NTSTATUS smb1srv_tcon_create(struct smbXsrv_connection *conn,
 421                              NTTIME now,
 422                              struct smbXsrv_tcon **_tcon);
 423 NTSTATUS smb1srv_tcon_lookup(struct smbXsrv_connection *conn,
 424                              uint16_t tree_id, NTTIME now,
 425                              struct smbXsrv_tcon **tcon);
 426 NTSTATUS smb1srv_tcon_disconnect_all(struct smbXsrv_connection *conn);
 427 NTSTATUS smb2srv_tcon_table_init(struct smbXsrv_session *session);
 428 NTSTATUS smb2srv_tcon_create(struct smbXsrv_session *session,
 429                              NTTIME now,
 430                              struct smbXsrv_tcon **_tcon);
 431 NTSTATUS smb2srv_tcon_lookup(struct smbXsrv_session *session,
 432                              uint32_t tree_id, NTTIME now,
 433                              struct smbXsrv_tcon **tcon);
 434 NTSTATUS smb2srv_tcon_disconnect_all(struct smbXsrv_session *session);
 435 struct smbXsrv_tcon_global0;
 436 NTSTATUS smbXsrv_tcon_global_traverse(
 437                         int (*fn)(struct smbXsrv_tcon_global0 *, void *),
 438                         void *private_data);
 439
 440 NTSTATUS smbXsrv_open_global_init(void);
 441 NTSTATUS smbXsrv_open_create(struct smbXsrv_connection *conn,
 442                              struct auth_session_info *session_info,
 443                              NTTIME now,
 444                              struct smbXsrv_open **_open);
 445 uint32_t smbXsrv_open_hash(struct smbXsrv_open *_open);
 446 NTSTATUS smbXsrv_open_update(struct smbXsrv_open *_open);
 447 NTSTATUS smbXsrv_open_close(struct smbXsrv_open *op, NTTIME now);
 448 NTSTATUS smb1srv_open_table_init(struct smbXsrv_connection *conn);
 449 NTSTATUS smb1srv_open_lookup(struct smbXsrv_connection *conn,
 450                              uint16_t fnum, NTTIME now,
 451                              struct smbXsrv_open **_open);
 452 NTSTATUS smb2srv_open_table_init(struct smbXsrv_connection *conn);
 453 NTSTATUS smb2srv_open_lookup(struct smbXsrv_connection *conn,
 454                              uint64_t persistent_id,
 455                              uint64_t volatile_id,
 456                              NTTIME now,
 457                              struct smbXsrv_open **_open);
 458 NTSTATUS smb2srv_open_recreate(struct smbXsrv_connection *conn,
 459                                struct auth_session_info *session_info,
 460                                uint64_t persistent_id,
 461                                struct GUID create_guid,
 462                                NTTIME now,
 463                                struct smbXsrv_open **_open);
 464 struct smbXsrv_open_global0;
 465 NTSTATUS smbXsrv_open_global_traverse(
 466         int (*fn)(struct smbXsrv_open_global0 *, void *),
 467         void *private_data);
 468
 469 NTSTATUS smbXsrv_open_cleanup(uint64_t persistent_id);
 470
 471 struct smbd_smb2_send_queue {
 472         struct smbd_smb2_send_queue *prev, *next;
 473
 474         DATA_BLOB *sendfile_header;
 475         struct iovec *vector;
 476         int count;
 477
 478         TALLOC_CTX *mem_ctx;
 479 };
 480
 481 struct smbd_smb2_request {
 482         struct smbd_smb2_request *prev, *next;
 483
 484         struct smbd_server_connection *sconn;
 485
 486         struct smbd_smb2_send_queue queue_entry;
 487
 488         /* the session the request operates on, maybe NULL */
 489         struct smbXsrv_session *session;
 490         uint64_t last_session_id;
 491
 492         /* the tcon the request operates on, maybe NULL */
 493         struct smbXsrv_tcon *tcon;
 494         uint32_t last_tid;
 495
 496         int current_idx;
 497         bool do_signing;
 498         bool do_encryption;
 499         struct tevent_timer *async_te;
 500         bool compound_related;
 501
 502         /*
 503          * the encryption key for the whole
 504          * compound chain
 505          */
 506         DATA_BLOB first_key;
 507         /*
 508          * the signing key for the last
 509          * request/response of a compound chain
 510          */
 511         DATA_BLOB last_key;
 512
 513         struct timeval request_time;
 514
 515         /* fake smb1 request. */
 516         struct smb_request *smb1req;
 517         struct files_struct *compat_chain_fsp;
 518
 519         /*
 520          * The sub request for async backend calls.
 521          * This is used for SMB2 Cancel.
 522          */
 523         struct tevent_req *subreq;
 524
 525 #define SMBD_SMB2_TF_IOV_OFS 0
 526 #define SMBD_SMB2_HDR_IOV_OFS 1
 527 #define SMBD_SMB2_BODY_IOV_OFS 2
 528 #define SMBD_SMB2_DYN_IOV_OFS 3
 529
 530 #define SMBD_SMB2_NUM_IOV_PER_REQ 4
 531
 532 #define SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,ofs) \
 533         (&req->dir.vector[(idx)+(ofs)])
 534
 535 #define SMBD_SMB2_IDX_TF_IOV(req,dir,idx) \
 536         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_TF_IOV_OFS)
 537 #define SMBD_SMB2_IDX_HDR_IOV(req,dir,idx) \
 538         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_HDR_IOV_OFS)
 539 #define SMBD_SMB2_IDX_BODY_IOV(req,dir,idx) \
 540         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_BODY_IOV_OFS)
 541 #define SMBD_SMB2_IDX_DYN_IOV(req,dir,idx) \
 542         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_DYN_IOV_OFS)
 543
 544 #define SMBD_SMB2_IN_TF_IOV(req)    SMBD_SMB2_IDX_TF_IOV(req,in,req->current_idx)
 545 #define SMBD_SMB2_IN_TF_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_TF_IOV(req)->iov_base)
 546 #define SMBD_SMB2_IN_HDR_IOV(req)    SMBD_SMB2_IDX_HDR_IOV(req,in,req->current_idx)
 547 #define SMBD_SMB2_IN_HDR_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_HDR_IOV(req)->iov_base)
 548 #define SMBD_SMB2_IN_BODY_IOV(req)   SMBD_SMB2_IDX_BODY_IOV(req,in,req->current_idx)
 549 #define SMBD_SMB2_IN_BODY_PTR(req)   (uint8_t *)(SMBD_SMB2_IN_BODY_IOV(req)->iov_base)
 550 #define SMBD_SMB2_IN_BODY_LEN(req)   (SMBD_SMB2_IN_BODY_IOV(req)->iov_len)
 551 #define SMBD_SMB2_IN_DYN_IOV(req)    SMBD_SMB2_IDX_DYN_IOV(req,in,req->current_idx)
 552 #define SMBD_SMB2_IN_DYN_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_DYN_IOV(req)->iov_base)
 553 #define SMBD_SMB2_IN_DYN_LEN(req)    (SMBD_SMB2_IN_DYN_IOV(req)->iov_len)
 554
 555 #define SMBD_SMB2_OUT_TF_IOV(req)   SMBD_SMB2_IDX_TF_IOV(req,out,req->current_idx)
 556 #define SMBD_SMB2_OUT_TF_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_TF_IOV(req)->iov_base)
 557 #define SMBD_SMB2_OUT_HDR_IOV(req)   SMBD_SMB2_IDX_HDR_IOV(req,out,req->current_idx)
 558 #define SMBD_SMB2_OUT_HDR_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_HDR_IOV(req)->iov_base)
 559 #define SMBD_SMB2_OUT_BODY_IOV(req)  SMBD_SMB2_IDX_BODY_IOV(req,out,req->current_idx)
 560 #define SMBD_SMB2_OUT_BODY_PTR(req)  (uint8_t *)(SMBD_SMB2_OUT_BODY_IOV(req)->iov_base)
 561 #define SMBD_SMB2_OUT_BODY_LEN(req)  (SMBD_SMB2_OUT_BODY_IOV(req)->iov_len)
 562 #define SMBD_SMB2_OUT_DYN_IOV(req)   SMBD_SMB2_IDX_DYN_IOV(req,out,req->current_idx)
 563 #define SMBD_SMB2_OUT_DYN_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_DYN_IOV(req)->iov_base)
 564 #define SMBD_SMB2_OUT_DYN_LEN(req)   (SMBD_SMB2_OUT_DYN_IOV(req)->iov_len)
 565
 566 #define SMBD_SMB2_SHORT_RECEIVEFILE_WRITE_LEN (SMB2_HDR_BODY + 0x30)
 567
 568         struct {
 569                 /*
 570                  * vector[0] TRANSPORT HEADER (empty)
 571                  * .
 572                  * vector[1] SMB2_TRANSFORM (optional)
 573                  * vector[2] SMB2
 574                  * vector[3] fixed body
 575                  * vector[4] dynamic body
 576                  * .
 577                  * .
 578                  * .
 579                  * vector[5] SMB2_TRANSFORM (optional)
 580                  * vector[6] SMB2
 581                  * vector[7] fixed body
 582                  * vector[8] dynamic body
 583                  * .
 584                  * .
 585                  * .
 586                  */
 587                 struct iovec *vector;
 588                 int vector_count;
 589         } in;
 590         struct {
 591                 /* the NBT header is not allocated */
 592                 uint8_t nbt_hdr[4];
 593                 /*
 594                  * vector[0] TRANSPORT HEADER
 595                  * .
 596                  * vector[1] SMB2_TRANSFORM (optional)
 597                  * vector[2] SMB2
 598                  * vector[3] fixed body
 599                  * vector[4] dynamic body
 600                  * .
 601                  * .
 602                  * .
 603                  * vector[5] SMB2_TRANSFORM (empty)
 604                  * vector[6] SMB2
 605                  * vector[7] fixed body
 606                  * vector[8] dynamic body
 607                  * .
 608                  * .
 609                  * .
 610                  */
 611                 struct iovec *vector;
 612                 int vector_count;
 613         } out;
 614 };
 615
 616 struct smbd_server_connection;
 617 struct user_struct;
 618
 619 struct pending_message_list;
 620 struct pending_auth_data;
 621
 622 struct user_struct {
 623         struct user_struct *next, *prev;
 624         uint64_t vuid; /* Tag for this entry. */
 625
 626         char *session_keystr; /* used by utmp and pam session code.
 627                                  TDB key string */
 628         int homes_snum;
 629
 630         struct auth_session_info *session_info;
 631
 632         struct smbXsrv_session *session;
 633 };
 634
 635 struct smbd_server_connection {
 636         int sock;
 637         const struct tsocket_address *local_address;
 638         const struct tsocket_address *remote_address;
 639         const char *remote_hostname;
 640         struct tevent_context *ev_ctx;
 641         struct messaging_context *msg_ctx;
 642         struct sys_notify_context *sys_notify_ctx;
 643         struct notify_context *notify_ctx;
 644         struct {
 645                 bool got_session;
 646         } nbt;
 647         bool using_smb2;
 648         int trans_num;
 649
 650         size_t num_users;
 651         struct user_struct *users;
 652
 653         size_t num_connections;
 654         struct connection_struct *connections;
 655
 656         size_t num_files;
 657         struct files_struct *files;
 658
 659         int real_max_open_files;
 660         struct fsp_singleton_cache fsp_fi_cache;
 661
 662         struct pending_message_list *deferred_open_queue;
 663
 664
 665         /* open directory handles. */
 666         struct {
 667                 struct bitmap *dptr_bmap;
 668                 struct dptr_struct *dirptrs;
 669                 int dirhandles_open;
 670         } searches;
 671
 672         uint64_t num_requests;
 673
 674         /* Current number of oplocks we have outstanding. */
 675         struct {
 676                 int32_t exclusive_open;
 677                 int32_t level_II_open;
 678                 struct kernel_oplocks *kernel_ops;
 679         } oplocks;
 680
 681         struct {
 682                 struct tevent_fd *fde;
 683
 684                 struct {
 685                         /*
 686                          * fd for the fcntl lock mutexing access to our sock
 687                          */
 688                         int socket_lock_fd;
 689
 690                         /*
 691                          * fd for the trusted pipe from
 692                          * echo handler child
 693                          */
 694                         int trusted_fd;
 695
 696                         /*
 697                          * fde for the trusted_fd
 698                          */
 699                         struct tevent_fd *trusted_fde;
 700
 701                         /*
 702                          * Reference count for the fcntl lock to
 703                          * allow recursive locks.
 704                          */
 705                         int ref_count;
 706                 } echo_handler;
 707
 708                 struct {
 709                         bool encrypted_passwords;
 710                         bool spnego;
 711                         struct auth4_context *auth_context;
 712                         bool done;
 713                         /*
 714                          * Size of the data we can receive. Set by us.
 715                          * Can be modified by the max xmit parameter.
 716                          */
 717                         int max_recv;
 718                 } negprot;
 719
 720                 struct {
 721                         uint16_t client_major;
 722                         uint16_t client_minor;
 723                         uint32_t client_cap_low;
 724                         uint32_t client_cap_high;
 725                 } unix_info;
 726
 727                 struct {
 728                         bool done_sesssetup;
 729                         /*
 730                          * Size of data we can send to client. Set
 731                          *  by the client for all protocols above CORE.
 732                          *  Set by us for CORE protocol.
 733                          */
 734                         int max_send;
 735                 } sessions;
 736                 struct smb_signing_state *signing_state;
 737
 738                 struct notify_mid_map *notify_mid_maps;
 739
 740                 struct {
 741                         /* dlink list we store pending lock records on. */
 742                         struct blocking_lock_record *blocking_lock_queue;
 743                         /* dlink list we move cancelled lock records onto. */
 744                         struct blocking_lock_record *blocking_lock_cancelled_queue;
 745
 746                         /* The event that makes us process our blocking lock queue */
 747                         struct tevent_timer *brl_timeout;
 748
 749                         bool blocking_lock_unlock_state;
 750                         bool blocking_lock_cancel_state;
 751                 } locks;
 752         } smb1;
 753         struct {
 754                 struct smbd_smb2_request_read_state {
 755                         struct smbd_smb2_request *req;
 756                         struct {
 757                                 uint8_t nbt[NBT_HDR_SIZE];
 758                                 bool done;
 759                         } hdr;
 760                         struct iovec vector;
 761                         bool doing_receivefile;
 762                         size_t min_recv_size;
 763                         size_t pktlen;
 764                         uint8_t *pktbuf;
 765                 } request_read_state;
 766                 struct smbd_smb2_send_queue *send_queue;
 767                 size_t send_queue_len;
 768                 struct tevent_fd *fde;
 769                 bool negprot_2ff;
 770                 struct {
 771                         /* The event that makes us process our blocking lock queue */
 772                         struct tevent_timer *brl_timeout;
 773                         bool blocking_lock_unlock_state;
 774                 } locks;
 775                 struct smbd_smb2_request *requests;
 776                 /*
 777                  * seqnum_low is the lowest sequence number
 778                  * we will accept.
 779                  */
 780                 uint64_t seqnum_low;
 781                 /*
 782                  * seqnum_range is the range of credits we have
 783                  * granted from the sequence windows starting
 784                  * at seqnum_low.
 785                  *
 786                  * This gets incremented when new credits are
 787                  * granted and gets decremented when the
 788                  * lowest sequence number is consumed
 789                  * (when seqnum_low gets incremented).
 790                  */
 791                 uint16_t seqnum_range;
 792                 /*
 793                  * credits_grantedThe number of credits we have currently granted
 794                  * to the client.
 795                  *
 796                  * This gets incremented when new credits are
 797                  * granted and gets decremented when any credit
 798                  * is comsumed.
 799                  *
 800                  * Note: the decrementing is different compared
 801                  *       to seqnum_range.
 802                  */
 803                 uint16_t credits_granted;
 804                 /*
 805                  * The maximum number of credits we will ever
 806                  * grant to the client.
 807                  *
 808                  * Typically we will only grant 1/16th of
 809                  * max_credits.
 810                  *
 811                  * This is the "server max credits" parameter.
 812                  */
 813                 uint16_t max_credits;
 814                 /*
 815                  * a bitmap of size max_credits
 816                  */
 817                 struct bitmap *credits_bitmap;
 818                 bool supports_multicredit;
 819                 uint32_t max_trans;
 820                 uint32_t max_read;
 821                 uint32_t max_write;
 822         } smb2;
 823
 824         struct smbXsrv_connection *conn;
 825 };
 826
 827 extern struct smbXsrv_connection *global_smbXsrv_connection;
 828
 829 void smbd_init_globals(void);