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 void smbd_echo_init(struct smbd_server_connection *sconn);
 119
 120 NTSTATUS smbd_do_locking(struct smb_request *req,
 121                          files_struct *fsp,
 122                          uint8_t type,
 123                          int32_t timeout,
 124                          uint16_t num_locks,
 125                          struct smbd_lock_element *locks,
 126                          bool *async);
 127 NTSTATUS smbd_do_unlocking(struct smb_request *req,
 128                            files_struct *fsp,
 129                            uint16_t num_ulocks,
 130                            struct smbd_lock_element *ulocks);
 131
 132 NTSTATUS smbd_do_qfilepathinfo(connection_struct *conn,
 133                                TALLOC_CTX *mem_ctx,
 134                                uint16_t info_level,
 135                                files_struct *fsp,
 136                                struct smb_filename *smb_fname,
 137                                bool delete_pending,
 138                                struct timespec write_time_ts,
 139                                struct ea_list *ea_list,
 140                                int lock_data_count,
 141                                char *lock_data,
 142                                uint16_t flags2,
 143                                unsigned int max_data_bytes,
 144                                size_t *fixed_portion,
 145                                char **ppdata,
 146                                unsigned int *pdata_size);
 147
 148 NTSTATUS smbd_do_setfilepathinfo(connection_struct *conn,
 149                                 struct smb_request *req,
 150                                 TALLOC_CTX *mem_ctx,
 151                                 uint16_t info_level,
 152                                 files_struct *fsp,
 153                                 struct smb_filename *smb_fname,
 154                                 char **ppdata, int total_data,
 155                                 int *ret_data_size);
 156
 157 NTSTATUS smbd_do_qfsinfo(connection_struct *conn,
 158                          TALLOC_CTX *mem_ctx,
 159                          uint16_t info_level,
 160                          uint16_t flags2,
 161                          unsigned int max_data_bytes,
 162                          size_t *fixed_portion,
 163                          struct smb_filename *smb_fname,
 164                          char **ppdata,
 165                          int *ret_data_len);
 166
 167 bool smbd_dirptr_get_entry(TALLOC_CTX *ctx,
 168                            struct dptr_struct *dirptr,
 169                            const char *mask,
 170                            uint32_t dirtype,
 171                            bool dont_descend,
 172                            bool ask_sharemode,
 173                            bool (*match_fn)(TALLOC_CTX *ctx,
 174                                             void *private_data,
 175                                             const char *dname,
 176                                             const char *mask,
 177                                             char **_fname),
 178                            bool (*mode_fn)(TALLOC_CTX *ctx,
 179                                            void *private_data,
 180                                            struct smb_filename *smb_fname,
 181                                            uint32_t *_mode),
 182                            void *private_data,
 183                            char **_fname,
 184                            struct smb_filename **_smb_fname,
 185                            uint32_t *_mode,
 186                            long *_prev_offset);
 187
 188 bool smbd_dirptr_lanman2_entry(TALLOC_CTX *ctx,
 189                                connection_struct *conn,
 190                                struct dptr_struct *dirptr,
 191                                uint16 flags2,
 192                                const char *path_mask,
 193                                uint32 dirtype,
 194                                int info_level,
 195                                int requires_resume_key,
 196                                bool dont_descend,
 197                                bool ask_sharemode,
 198                                uint8_t align,
 199                                bool do_pad,
 200                                char **ppdata,
 201                                char *base_data,
 202                                char *end_data,
 203                                int space_remaining,
 204                                bool *out_of_space,
 205                                bool *got_exact_match,
 206                                int *_last_entry_off,
 207                                struct ea_list *name_list);
 208
 209 NTSTATUS smbd_calculate_access_mask(connection_struct *conn,
 210                                     const struct smb_filename *smb_fname,
 211                                     bool use_privs,
 212                                     uint32_t access_mask,
 213                                     uint32_t *access_mask_out);
 214
 215 void smbd_notify_cancel_by_smbreq(const struct smb_request *smbreq);
 216
 217 void smbd_server_connection_terminate_ex(struct smbd_server_connection *sconn,
 218                                          const char *reason,
 219                                          const char *location);
 220 #define smbd_server_connection_terminate(sconn, reason) \
 221         smbd_server_connection_terminate_ex(sconn, reason, __location__)
 222
 223 const char *smb2_opcode_name(uint16_t opcode);
 224 bool smbd_is_smb2_header(const uint8_t *inbuf, size_t size);
 225
 226 void reply_smb2002(struct smb_request *req, uint16_t choice);
 227 void reply_smb20ff(struct smb_request *req, uint16_t choice);
 228 void smbd_smb2_first_negprot(struct smbd_server_connection *sconn,
 229                              uint8_t *inbuf, size_t size);
 230
 231 DATA_BLOB smbd_smb2_generate_outbody(struct smbd_smb2_request *req, size_t size);
 232
 233 NTSTATUS smbd_smb2_request_error_ex(struct smbd_smb2_request *req,
 234                                     NTSTATUS status,
 235                                     DATA_BLOB *info,
 236                                     const char *location);
 237 #define smbd_smb2_request_error(req, status) \
 238         smbd_smb2_request_error_ex(req, status, NULL, __location__)
 239 NTSTATUS smbd_smb2_request_done_ex(struct smbd_smb2_request *req,
 240                                    NTSTATUS status,
 241                                    DATA_BLOB body, DATA_BLOB *dyn,
 242                                    const char *location);
 243 #define smbd_smb2_request_done(req, body, dyn) \
 244         smbd_smb2_request_done_ex(req, NT_STATUS_OK, body, dyn, __location__)
 245
 246 NTSTATUS smbd_smb2_send_oplock_break(struct smbd_server_connection *sconn,
 247                                      struct smbXsrv_session *session,
 248                                      struct smbXsrv_tcon *tcon,
 249                                      struct smbXsrv_open *op,
 250                                      uint8_t oplock_level);
 251
 252 NTSTATUS smbd_smb2_request_pending_queue(struct smbd_smb2_request *req,
 253                                          struct tevent_req *subreq,
 254                                          uint32_t defer_time);
 255
 256 struct smb_request *smbd_smb2_fake_smb_request(struct smbd_smb2_request *req);
 257 size_t smbd_smb2_unread_bytes(struct smbd_smb2_request *req);
 258 void remove_smb2_chained_fsp(files_struct *fsp);
 259
 260 NTSTATUS smbd_smb2_request_verify_creditcharge(struct smbd_smb2_request *req,
 261                                                uint32_t data_length);
 262
 263 NTSTATUS smbd_smb2_request_verify_sizes(struct smbd_smb2_request *req,
 264                                         size_t expected_body_size);
 265
 266 enum protocol_types smbd_smb2_protocol_dialect_match(const uint8_t *indyn,
 267                                                      const int dialect_count,
 268                                                      uint16_t *dialect);
 269 NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req);
 270 NTSTATUS smbd_smb2_request_process_sesssetup(struct smbd_smb2_request *req);
 271 NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req);
 272 NTSTATUS smbd_smb2_request_process_tcon(struct smbd_smb2_request *req);
 273 NTSTATUS smbd_smb2_request_process_tdis(struct smbd_smb2_request *req);
 274 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req);
 275 NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req);
 276 NTSTATUS smbd_smb2_request_process_flush(struct smbd_smb2_request *req);
 277 NTSTATUS smbd_smb2_request_process_read(struct smbd_smb2_request *req);
 278 NTSTATUS smb2_read_complete(struct tevent_req *req, ssize_t nread, int err);
 279 NTSTATUS smbd_smb2_request_process_write(struct smbd_smb2_request *req);
 280 NTSTATUS smb2_write_complete(struct tevent_req *req, ssize_t nwritten, int err);
 281 NTSTATUS smb2_write_complete_nosync(struct tevent_req *req, ssize_t nwritten,
 282                                     int err);
 283 NTSTATUS smbd_smb2_request_process_lock(struct smbd_smb2_request *req);
 284 NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req);
 285 NTSTATUS smbd_smb2_request_process_keepalive(struct smbd_smb2_request *req);
 286 NTSTATUS smbd_smb2_request_process_find(struct smbd_smb2_request *req);
 287 NTSTATUS smbd_smb2_request_process_notify(struct smbd_smb2_request *req);
 288 NTSTATUS smbd_smb2_request_process_getinfo(struct smbd_smb2_request *req);
 289 NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req);
 290 NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req);
 291 NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req);
 292 void smbd_smb2_request_dispatch_immediate(struct tevent_context *ctx,
 293                                 struct tevent_immediate *im,
 294                                 void *private_data);
 295
 296 struct deferred_open_record;
 297
 298 /* SMB1 -> SMB2 glue. */
 299 void send_break_message_smb2(files_struct *fsp, int level);
 300 struct blocking_lock_record *get_pending_smb2req_blr(struct smbd_smb2_request *smb2req);
 301 bool push_blocking_lock_request_smb2( struct byte_range_lock *br_lck,
 302                                 struct smb_request *req,
 303                                 files_struct *fsp,
 304                                 int lock_timeout,
 305                                 int lock_num,
 306                                 uint64_t smblctx,
 307                                 enum brl_type lock_type,
 308                                 enum brl_flavour lock_flav,
 309                                 uint64_t offset,
 310                                 uint64_t count,
 311                                 uint64_t blocking_smblctx);
 312 void process_blocking_lock_queue_smb2(
 313         struct smbd_server_connection *sconn, struct timeval tv_curr);
 314 void cancel_pending_lock_requests_by_fid_smb2(files_struct *fsp,
 315                         struct byte_range_lock *br_lck,
 316                         enum file_close_type close_type);
 317 /* From smbd/smb2_create.c */
 318 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level);
 319 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
 320                         struct timeval *p_request_time,
 321                         struct deferred_open_record **open_rec);
 322 bool open_was_deferred_smb2(struct smbd_server_connection *sconn,
 323                             uint64_t mid);
 324 void remove_deferred_open_message_smb2(
 325         struct smbd_server_connection *sconn, uint64_t mid);
 326 bool schedule_deferred_open_message_smb2(
 327         struct smbd_server_connection *sconn, uint64_t mid);
 328 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
 329                                 struct timeval request_time,
 330                                 struct timeval timeout,
 331                                 struct file_id id,
 332                                 struct deferred_open_record *open_rec);
 333
 334 struct smbXsrv_connection {
 335         struct smbd_server_connection *sconn;
 336
 337         const struct tsocket_address *local_address;
 338         const struct tsocket_address *remote_address;
 339         const char *remote_hostname;
 340
 341         struct tevent_context *ev_ctx;
 342         struct messaging_context *msg_ctx;
 343
 344         enum protocol_types protocol;
 345
 346         struct {
 347                 int sock;
 348                 struct tevent_fd *fde;
 349
 350                 struct {
 351                         bool got_session;
 352                 } nbt;
 353         } transport;
 354
 355         struct {
 356                 struct {
 357                         uint32_t capabilities;
 358                         struct GUID guid;
 359                         uint16_t security_mode;
 360                         uint16_t num_dialects;
 361                         uint16_t *dialects;
 362                 } client;
 363                 struct {
 364                         uint32_t capabilities;
 365                         struct GUID guid;
 366                         uint16_t security_mode;
 367                         uint16_t dialect;
 368                         uint32_t max_trans;
 369                         uint32_t max_read;
 370                         uint32_t max_write;
 371                 } server;
 372         } smb2;
 373
 374         struct msg_state *msg_state;
 375
 376         /*
 377          * Link into libasys for asynchronous operations
 378          */
 379         struct asys_context *asys_ctx;
 380         struct tevent_fd *asys_fde;
 381
 382         uint64_t smbd_idle_profstamp;
 383
 384         /*
 385          * this session_table is used for SMB1 and SMB2,
 386          */
 387         struct smbXsrv_session_table *session_table;
 388         uint64_t last_session_id;
 389         /*
 390          * this tcon_table is only used for SMB1.
 391          */
 392         struct smbXsrv_tcon_table *tcon_table;
 393         /*
 394          * this open_table is used for SMB1 and SMB2,
 395          * because we have a global sconn->real_max_open_files
 396          * limit.
 397          */
 398         struct smbXsrv_open_table *open_table;
 399 };
 400
 401 const char *smbXsrv_connection_dbg(const struct smbXsrv_connection *xconn);
 402
 403 NTSTATUS smbXsrv_version_global_init(const struct server_id *server_id);
 404 uint32_t smbXsrv_version_global_current(void);
 405
 406 NTSTATUS smbXsrv_connection_init_tables(struct smbXsrv_connection *conn,
 407                                         enum protocol_types protocol);
 408
 409 NTSTATUS smbXsrv_session_global_init(void);
 410 NTSTATUS smbXsrv_session_create(struct smbXsrv_connection *conn,
 411                                 NTTIME now,
 412                                 struct smbXsrv_session **_session);
 413 NTSTATUS smbXsrv_session_update(struct smbXsrv_session *session);
 414 NTSTATUS smbXsrv_session_logoff(struct smbXsrv_session *session);
 415 NTSTATUS smbXsrv_session_logoff_all(struct smbXsrv_connection *conn);
 416 NTSTATUS smb1srv_session_table_init(struct smbXsrv_connection *conn);
 417 NTSTATUS smb1srv_session_lookup(struct smbXsrv_connection *conn,
 418                                 uint16_t vuid, NTTIME now,
 419                                 struct smbXsrv_session **session);
 420 NTSTATUS smb2srv_session_table_init(struct smbXsrv_connection *conn);
 421 NTSTATUS smb2srv_session_lookup(struct smbXsrv_connection *conn,
 422                                 uint64_t session_id, NTTIME now,
 423                                 struct smbXsrv_session **session);
 424 struct smbXsrv_session_global0;
 425 NTSTATUS smbXsrv_session_global_traverse(
 426                         int (*fn)(struct smbXsrv_session_global0 *, void *),
 427                         void *private_data);
 428 struct tevent_req *smb2srv_session_close_previous_send(TALLOC_CTX *mem_ctx,
 429                                         struct tevent_context *ev,
 430                                         struct smbXsrv_connection *conn,
 431                                         struct auth_session_info *session_info,
 432                                         uint64_t previous_session_id,
 433                                         uint64_t current_session_id);
 434 NTSTATUS smb2srv_session_close_previous_recv(struct tevent_req *req);
 435
 436 NTSTATUS smbXsrv_tcon_global_init(void);
 437 NTSTATUS smbXsrv_tcon_update(struct smbXsrv_tcon *tcon);
 438 NTSTATUS smbXsrv_tcon_disconnect(struct smbXsrv_tcon *tcon, uint64_t vuid);
 439 NTSTATUS smb1srv_tcon_table_init(struct smbXsrv_connection *conn);
 440 NTSTATUS smb1srv_tcon_create(struct smbXsrv_connection *conn,
 441                              NTTIME now,
 442                              struct smbXsrv_tcon **_tcon);
 443 NTSTATUS smb1srv_tcon_lookup(struct smbXsrv_connection *conn,
 444                              uint16_t tree_id, NTTIME now,
 445                              struct smbXsrv_tcon **tcon);
 446 NTSTATUS smb1srv_tcon_disconnect_all(struct smbXsrv_connection *conn);
 447 NTSTATUS smb2srv_tcon_table_init(struct smbXsrv_session *session);
 448 NTSTATUS smb2srv_tcon_create(struct smbXsrv_session *session,
 449                              NTTIME now,
 450                              struct smbXsrv_tcon **_tcon);
 451 NTSTATUS smb2srv_tcon_lookup(struct smbXsrv_session *session,
 452                              uint32_t tree_id, NTTIME now,
 453                              struct smbXsrv_tcon **tcon);
 454 NTSTATUS smb2srv_tcon_disconnect_all(struct smbXsrv_session *session);
 455 struct smbXsrv_tcon_global0;
 456 NTSTATUS smbXsrv_tcon_global_traverse(
 457                         int (*fn)(struct smbXsrv_tcon_global0 *, void *),
 458                         void *private_data);
 459
 460 NTSTATUS smbXsrv_open_global_init(void);
 461 NTSTATUS smbXsrv_open_create(struct smbXsrv_connection *conn,
 462                              struct auth_session_info *session_info,
 463                              NTTIME now,
 464                              struct smbXsrv_open **_open);
 465 uint32_t smbXsrv_open_hash(struct smbXsrv_open *_open);
 466 NTSTATUS smbXsrv_open_update(struct smbXsrv_open *_open);
 467 NTSTATUS smbXsrv_open_close(struct smbXsrv_open *op, NTTIME now);
 468 NTSTATUS smb1srv_open_table_init(struct smbXsrv_connection *conn);
 469 NTSTATUS smb1srv_open_lookup(struct smbXsrv_connection *conn,
 470                              uint16_t fnum, NTTIME now,
 471                              struct smbXsrv_open **_open);
 472 NTSTATUS smb2srv_open_table_init(struct smbXsrv_connection *conn);
 473 NTSTATUS smb2srv_open_lookup(struct smbXsrv_connection *conn,
 474                              uint64_t persistent_id,
 475                              uint64_t volatile_id,
 476                              NTTIME now,
 477                              struct smbXsrv_open **_open);
 478 NTSTATUS smb2srv_open_recreate(struct smbXsrv_connection *conn,
 479                                struct auth_session_info *session_info,
 480                                uint64_t persistent_id,
 481                                const struct GUID *create_guid,
 482                                NTTIME now,
 483                                struct smbXsrv_open **_open);
 484 struct smbXsrv_open_global0;
 485 NTSTATUS smbXsrv_open_global_traverse(
 486         int (*fn)(struct smbXsrv_open_global0 *, void *),
 487         void *private_data);
 488
 489 NTSTATUS smbXsrv_open_cleanup(uint64_t persistent_id);
 490
 491 struct smbd_smb2_send_queue {
 492         struct smbd_smb2_send_queue *prev, *next;
 493
 494         DATA_BLOB *sendfile_header;
 495         struct iovec *vector;
 496         int count;
 497
 498         TALLOC_CTX *mem_ctx;
 499 };
 500
 501 struct smbd_smb2_request {
 502         struct smbd_smb2_request *prev, *next;
 503
 504         struct smbd_server_connection *sconn;
 505
 506         struct smbd_smb2_send_queue queue_entry;
 507
 508         /* the session the request operates on, maybe NULL */
 509         struct smbXsrv_session *session;
 510         uint64_t last_session_id;
 511
 512         /* the tcon the request operates on, maybe NULL */
 513         struct smbXsrv_tcon *tcon;
 514         uint32_t last_tid;
 515
 516         int current_idx;
 517         bool do_signing;
 518         bool do_encryption;
 519         struct tevent_timer *async_te;
 520         bool compound_related;
 521
 522         /*
 523          * the encryption key for the whole
 524          * compound chain
 525          */
 526         DATA_BLOB first_key;
 527         /*
 528          * the signing key for the last
 529          * request/response of a compound chain
 530          */
 531         DATA_BLOB last_key;
 532
 533         struct timeval request_time;
 534
 535         /* fake smb1 request. */
 536         struct smb_request *smb1req;
 537         struct files_struct *compat_chain_fsp;
 538
 539         /*
 540          * The sub request for async backend calls.
 541          * This is used for SMB2 Cancel.
 542          */
 543         struct tevent_req *subreq;
 544
 545 #define SMBD_SMB2_TF_IOV_OFS 0
 546 #define SMBD_SMB2_HDR_IOV_OFS 1
 547 #define SMBD_SMB2_BODY_IOV_OFS 2
 548 #define SMBD_SMB2_DYN_IOV_OFS 3
 549
 550 #define SMBD_SMB2_NUM_IOV_PER_REQ 4
 551
 552 #define SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,ofs) \
 553         (&req->dir.vector[(idx)+(ofs)])
 554
 555 #define SMBD_SMB2_IDX_TF_IOV(req,dir,idx) \
 556         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_TF_IOV_OFS)
 557 #define SMBD_SMB2_IDX_HDR_IOV(req,dir,idx) \
 558         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_HDR_IOV_OFS)
 559 #define SMBD_SMB2_IDX_BODY_IOV(req,dir,idx) \
 560         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_BODY_IOV_OFS)
 561 #define SMBD_SMB2_IDX_DYN_IOV(req,dir,idx) \
 562         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_DYN_IOV_OFS)
 563
 564 #define SMBD_SMB2_IN_TF_IOV(req)    SMBD_SMB2_IDX_TF_IOV(req,in,req->current_idx)
 565 #define SMBD_SMB2_IN_TF_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_TF_IOV(req)->iov_base)
 566 #define SMBD_SMB2_IN_HDR_IOV(req)    SMBD_SMB2_IDX_HDR_IOV(req,in,req->current_idx)
 567 #define SMBD_SMB2_IN_HDR_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_HDR_IOV(req)->iov_base)
 568 #define SMBD_SMB2_IN_BODY_IOV(req)   SMBD_SMB2_IDX_BODY_IOV(req,in,req->current_idx)
 569 #define SMBD_SMB2_IN_BODY_PTR(req)   (uint8_t *)(SMBD_SMB2_IN_BODY_IOV(req)->iov_base)
 570 #define SMBD_SMB2_IN_BODY_LEN(req)   (SMBD_SMB2_IN_BODY_IOV(req)->iov_len)
 571 #define SMBD_SMB2_IN_DYN_IOV(req)    SMBD_SMB2_IDX_DYN_IOV(req,in,req->current_idx)
 572 #define SMBD_SMB2_IN_DYN_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_DYN_IOV(req)->iov_base)
 573 #define SMBD_SMB2_IN_DYN_LEN(req)    (SMBD_SMB2_IN_DYN_IOV(req)->iov_len)
 574
 575 #define SMBD_SMB2_OUT_TF_IOV(req)   SMBD_SMB2_IDX_TF_IOV(req,out,req->current_idx)
 576 #define SMBD_SMB2_OUT_TF_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_TF_IOV(req)->iov_base)
 577 #define SMBD_SMB2_OUT_HDR_IOV(req)   SMBD_SMB2_IDX_HDR_IOV(req,out,req->current_idx)
 578 #define SMBD_SMB2_OUT_HDR_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_HDR_IOV(req)->iov_base)
 579 #define SMBD_SMB2_OUT_BODY_IOV(req)  SMBD_SMB2_IDX_BODY_IOV(req,out,req->current_idx)
 580 #define SMBD_SMB2_OUT_BODY_PTR(req)  (uint8_t *)(SMBD_SMB2_OUT_BODY_IOV(req)->iov_base)
 581 #define SMBD_SMB2_OUT_BODY_LEN(req)  (SMBD_SMB2_OUT_BODY_IOV(req)->iov_len)
 582 #define SMBD_SMB2_OUT_DYN_IOV(req)   SMBD_SMB2_IDX_DYN_IOV(req,out,req->current_idx)
 583 #define SMBD_SMB2_OUT_DYN_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_DYN_IOV(req)->iov_base)
 584 #define SMBD_SMB2_OUT_DYN_LEN(req)   (SMBD_SMB2_OUT_DYN_IOV(req)->iov_len)
 585
 586 #define SMBD_SMB2_SHORT_RECEIVEFILE_WRITE_LEN (SMB2_HDR_BODY + 0x30)
 587
 588         struct {
 589                 /*
 590                  * vector[0] TRANSPORT HEADER (empty)
 591                  * .
 592                  * vector[1] SMB2_TRANSFORM (optional)
 593                  * vector[2] SMB2
 594                  * vector[3] fixed body
 595                  * vector[4] dynamic body
 596                  * .
 597                  * .
 598                  * .
 599                  * vector[5] SMB2_TRANSFORM (optional)
 600                  * vector[6] SMB2
 601                  * vector[7] fixed body
 602                  * vector[8] dynamic body
 603                  * .
 604                  * .
 605                  * .
 606                  */
 607                 struct iovec *vector;
 608                 int vector_count;
 609                 struct iovec _vector[1 + SMBD_SMB2_NUM_IOV_PER_REQ];
 610         } in;
 611         struct {
 612                 /* the NBT header is not allocated */
 613                 uint8_t nbt_hdr[4];
 614                 /*
 615                  * vector[0] TRANSPORT HEADER
 616                  * .
 617                  * vector[1] SMB2_TRANSFORM (optional)
 618                  * vector[2] SMB2
 619                  * vector[3] fixed body
 620                  * vector[4] dynamic body
 621                  * .
 622                  * .
 623                  * .
 624                  * vector[5] SMB2_TRANSFORM (empty)
 625                  * vector[6] SMB2
 626                  * vector[7] fixed body
 627                  * vector[8] dynamic body
 628                  * .
 629                  * .
 630                  * .
 631                  */
 632                 struct iovec *vector;
 633                 int vector_count;
 634                 struct iovec _vector[1 + SMBD_SMB2_NUM_IOV_PER_REQ];
 635 #define OUTVEC_ALLOC_SIZE (SMB2_HDR_BODY + 9)
 636                 uint8_t _hdr[OUTVEC_ALLOC_SIZE];
 637                 uint8_t _body[0x58];
 638         } out;
 639 };
 640
 641 struct smbd_server_connection;
 642 struct user_struct;
 643
 644 struct pending_message_list;
 645 struct pending_auth_data;
 646
 647 struct user_struct {
 648         struct user_struct *next, *prev;
 649         uint64_t vuid; /* Tag for this entry. */
 650
 651         char *session_keystr; /* used by utmp and pam session code.
 652                                  TDB key string */
 653         int homes_snum;
 654
 655         struct auth_session_info *session_info;
 656
 657         struct smbXsrv_session *session;
 658 };
 659
 660 struct smbd_server_connection {
 661         NTSTATUS status;
 662         const struct tsocket_address *local_address;
 663         const struct tsocket_address *remote_address;
 664         const char *remote_hostname;
 665         struct tevent_context *ev_ctx;
 666         struct messaging_context *msg_ctx;
 667         struct sys_notify_context *sys_notify_ctx;
 668         struct notify_context *notify_ctx;
 669         bool using_smb2;
 670         int trans_num;
 671
 672         size_t num_users;
 673         struct user_struct *users;
 674
 675         size_t num_connections;
 676         struct connection_struct *connections;
 677
 678         size_t num_files;
 679         struct files_struct *files;
 680
 681         int real_max_open_files;
 682         struct fsp_singleton_cache fsp_fi_cache;
 683
 684         struct pending_message_list *deferred_open_queue;
 685
 686
 687         /* open directory handles. */
 688         struct {
 689                 struct bitmap *dptr_bmap;
 690                 struct dptr_struct *dirptrs;
 691                 int dirhandles_open;
 692         } searches;
 693
 694         uint64_t num_requests;
 695
 696         /* Current number of oplocks we have outstanding. */
 697         struct {
 698                 int32_t exclusive_open;
 699                 int32_t level_II_open;
 700                 struct kernel_oplocks *kernel_ops;
 701         } oplocks;
 702
 703         struct {
 704                 struct {
 705
 706                         /*
 707                          * fd for the fcntl lock and process shared
 708                          * robust mutex to coordinate access to the
 709                          * client socket. When the system supports
 710                          * process shared robust mutexes, those are
 711                          * used. If not, then the fcntl lock will be
 712                          * used.
 713                          */
 714                         int socket_lock_fd;
 715 #ifdef HAVE_ROBUST_MUTEXES
 716                         pthread_mutex_t *socket_mutex;
 717 #endif
 718
 719                         /*
 720                          * fd for the trusted pipe from
 721                          * echo handler child
 722                          */
 723                         int trusted_fd;
 724
 725                         /*
 726                          * fde for the trusted_fd
 727                          */
 728                         struct tevent_fd *trusted_fde;
 729
 730                         /*
 731                          * Reference count for the fcntl lock to
 732                          * allow recursive locks.
 733                          */
 734                         int ref_count;
 735                 } echo_handler;
 736
 737                 struct {
 738                         bool encrypted_passwords;
 739                         bool spnego;
 740                         struct auth4_context *auth_context;
 741                         bool done;
 742                         /*
 743                          * Size of the data we can receive. Set by us.
 744                          * Can be modified by the max xmit parameter.
 745                          */
 746                         int max_recv;
 747                 } negprot;
 748
 749                 struct {
 750                         uint16_t client_major;
 751                         uint16_t client_minor;
 752                         uint32_t client_cap_low;
 753                         uint32_t client_cap_high;
 754                 } unix_info;
 755
 756                 struct {
 757                         bool done_sesssetup;
 758                         /*
 759                          * Size of data we can send to client. Set
 760                          *  by the client for all protocols above CORE.
 761                          *  Set by us for CORE protocol.
 762                          */
 763                         int max_send;
 764                 } sessions;
 765                 struct smb_signing_state *signing_state;
 766
 767                 struct notify_mid_map *notify_mid_maps;
 768
 769                 struct {
 770                         /* dlink list we store pending lock records on. */
 771                         struct blocking_lock_record *blocking_lock_queue;
 772                         /* dlink list we move cancelled lock records onto. */
 773                         struct blocking_lock_record *blocking_lock_cancelled_queue;
 774
 775                         /* The event that makes us process our blocking lock queue */
 776                         struct tevent_timer *brl_timeout;
 777
 778                         bool blocking_lock_unlock_state;
 779                         bool blocking_lock_cancel_state;
 780                 } locks;
 781         } smb1;
 782         struct {
 783                 struct smbd_smb2_request_read_state {
 784                         struct smbd_smb2_request *req;
 785                         struct {
 786                                 uint8_t nbt[NBT_HDR_SIZE];
 787                                 bool done;
 788                         } hdr;
 789                         struct iovec vector;
 790                         bool doing_receivefile;
 791                         size_t min_recv_size;
 792                         size_t pktfull;
 793                         size_t pktlen;
 794                         uint8_t *pktbuf;
 795                 } request_read_state;
 796                 struct smbd_smb2_send_queue *send_queue;
 797                 size_t send_queue_len;
 798                 struct tevent_fd *fde;
 799                 bool negprot_2ff;
 800                 struct {
 801                         /* The event that makes us process our blocking lock queue */
 802                         struct tevent_timer *brl_timeout;
 803                         bool blocking_lock_unlock_state;
 804                 } locks;
 805                 struct smbd_smb2_request *requests;
 806                 /*
 807                  * seqnum_low is the lowest sequence number
 808                  * we will accept.
 809                  */
 810                 uint64_t seqnum_low;
 811                 /*
 812                  * seqnum_range is the range of credits we have
 813                  * granted from the sequence windows starting
 814                  * at seqnum_low.
 815                  *
 816                  * This gets incremented when new credits are
 817                  * granted and gets decremented when the
 818                  * lowest sequence number is consumed
 819                  * (when seqnum_low gets incremented).
 820                  */
 821                 uint16_t seqnum_range;
 822                 /*
 823                  * credits_grantedThe number of credits we have currently granted
 824                  * to the client.
 825                  *
 826                  * This gets incremented when new credits are
 827                  * granted and gets decremented when any credit
 828                  * is comsumed.
 829                  *
 830                  * Note: the decrementing is different compared
 831                  *       to seqnum_range.
 832                  */
 833                 uint16_t credits_granted;
 834                 /*
 835                  * The maximum number of credits we will ever
 836                  * grant to the client.
 837                  *
 838                  * Typically we will only grant 1/16th of
 839                  * max_credits.
 840                  *
 841                  * This is the "server max credits" parameter.
 842                  */
 843                 uint16_t max_credits;
 844                 /*
 845                  * a bitmap of size max_credits
 846                  */
 847                 struct bitmap *credits_bitmap;
 848                 bool supports_multicredit;
 849                 uint32_t max_trans;
 850                 uint32_t max_read;
 851                 uint32_t max_write;
 852         } smb2;
 853
 854         struct smbXsrv_connection *conn;
 855 };
 856
 857 extern struct smbXsrv_connection *global_smbXsrv_connection;
 858
 859 void smbd_init_globals(void);