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