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