source3/smbd/globals.h

   1 /*
   2    Unix SMB/Netbios implementation.
   3    smbd globals
   4    Copyright (C) Stefan Metzmacher 2009
   5    Copyright (C) Jeremy Allison 2010
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "system/select.h"
  22 #include "librpc/gen_ndr/smbXsrv.h"
  23
  24 extern int aio_pending_size;
  25 extern int outstanding_aio_calls;
  26
  27 #ifdef USE_DMAPI
  28 struct smbd_dmapi_context;
  29 extern struct smbd_dmapi_context *dmapi_ctx;
  30 #endif
  31
  32 extern bool dfree_broken;
  33
  34 /* how many write cache buffers have been allocated */
  35 extern unsigned int allocated_write_caches;
  36
  37 /* A singleton cache to speed up searching by dev/inode. */
  38 struct fsp_singleton_cache {
  39         files_struct *fsp;
  40         struct file_id id;
  41 };
  42
  43 extern const struct mangle_fns *mangle_fns;
  44
  45 extern unsigned char *chartest;
  46 struct tdb_context;
  47 extern struct tdb_context *tdb_mangled_cache;
  48
  49 /*
  50   this determines how many characters are used from the original filename
  51   in the 8.3 mangled name. A larger value leads to a weaker hash and more collisions.
  52   The largest possible value is 6.
  53 */
  54 extern unsigned mangle_prefix;
  55
  56 struct msg_state;
  57
  58 extern bool logged_ioctl_message;
  59
  60 extern int trans_num;
  61
  62 extern time_t last_smb_conf_reload_time;
  63 extern time_t last_printer_reload_time;
  64 extern pid_t background_lpq_updater_pid;
  65
  66 /****************************************************************************
  67  structure to hold a linked list of queued messages.
  68  for processing.
  69 ****************************************************************************/
  70 extern uint32_t common_flags2;
  71
  72 extern struct smb_trans_enc_state *partial_srv_trans_enc_ctx;
  73 extern struct smb_trans_enc_state *srv_trans_enc_ctx;
  74
  75 struct sec_ctx {
  76         struct security_unix_token ut;
  77         struct security_token *token;
  78 };
  79 /* A stack of security contexts.  We include the current context as being
  80    the first one, so there is room for another MAX_SEC_CTX_DEPTH more. */
  81 extern struct sec_ctx sec_ctx_stack[MAX_SEC_CTX_DEPTH + 1];
  82 extern int sec_ctx_stack_ndx;
  83 extern bool become_uid_done;
  84 extern bool become_gid_done;
  85
  86 extern connection_struct *last_conn;
  87 extern uint16_t last_flags;
  88
  89 extern uint32_t global_client_caps;
  90
  91 extern uint16_t fnf_handle;
  92
  93 struct conn_ctx {
  94         connection_struct *conn;
  95         uint64_t vuid;
  96 };
  97 /* A stack of current_user connection contexts. */
  98 extern struct conn_ctx conn_ctx_stack[MAX_SEC_CTX_DEPTH];
  99 extern int conn_ctx_stack_ndx;
 100
 101 struct vfs_init_function_entry;
 102 extern struct vfs_init_function_entry *backends;
 103 extern char *sparse_buf;
 104 extern char *LastDir;
 105
 106 struct smbd_parent_context;
 107 extern struct smbd_parent_context *am_parent;
 108 extern struct memcache *smbd_memcache_ctx;
 109 extern bool exit_firsttime;
 110
 111 struct tstream_context;
 112 struct smbd_smb2_request;
 113
 114 DATA_BLOB negprot_spnego(TALLOC_CTX *ctx, struct smbd_server_connection *sconn);
 115
 116 void smbd_lock_socket(struct smbd_server_connection *sconn);
 117 void smbd_unlock_socket(struct smbd_server_connection *sconn);
 118
 119 NTSTATUS smbd_do_locking(struct smb_request *req,
 120                          files_struct *fsp,
 121                          uint8_t type,
 122                          int32_t timeout,
 123                          uint16_t num_ulocks,
 124                          struct smbd_lock_element *ulocks,
 125                          uint16_t num_locks,
 126                          struct smbd_lock_element *locks,
 127                          bool *async);
 128
 129 NTSTATUS smbd_do_qfilepathinfo(connection_struct *conn,
 130                                TALLOC_CTX *mem_ctx,
 131                                uint16_t info_level,
 132                                files_struct *fsp,
 133                                struct smb_filename *smb_fname,
 134                                bool delete_pending,
 135                                struct timespec write_time_ts,
 136                                struct ea_list *ea_list,
 137                                int lock_data_count,
 138                                char *lock_data,
 139                                uint16_t flags2,
 140                                unsigned int max_data_bytes,
 141                                char **ppdata,
 142                                unsigned int *pdata_size);
 143
 144 NTSTATUS smbd_do_setfilepathinfo(connection_struct *conn,
 145                                 struct smb_request *req,
 146                                 TALLOC_CTX *mem_ctx,
 147                                 uint16_t info_level,
 148                                 files_struct *fsp,
 149                                 struct smb_filename *smb_fname,
 150                                 char **ppdata, int total_data,
 151                                 int *ret_data_size);
 152
 153 NTSTATUS smbd_do_qfsinfo(connection_struct *conn,
 154                          TALLOC_CTX *mem_ctx,
 155                          uint16_t info_level,
 156                          uint16_t flags2,
 157                          unsigned int max_data_bytes,
 158                          char **ppdata,
 159                          int *ret_data_len);
 160
 161 bool smbd_dirptr_get_entry(TALLOC_CTX *ctx,
 162                            struct dptr_struct *dirptr,
 163                            const char *mask,
 164                            uint32_t dirtype,
 165                            bool dont_descend,
 166                            bool ask_sharemode,
 167                            bool (*match_fn)(TALLOC_CTX *ctx,
 168                                             void *private_data,
 169                                             const char *dname,
 170                                             const char *mask,
 171                                             char **_fname),
 172                            bool (*mode_fn)(TALLOC_CTX *ctx,
 173                                            void *private_data,
 174                                            struct smb_filename *smb_fname,
 175                                            uint32_t *_mode),
 176                            void *private_data,
 177                            char **_fname,
 178                            struct smb_filename **_smb_fname,
 179                            uint32_t *_mode,
 180                            long *_prev_offset);
 181
 182 bool smbd_dirptr_lanman2_entry(TALLOC_CTX *ctx,
 183                                connection_struct *conn,
 184                                struct dptr_struct *dirptr,
 185                                uint16 flags2,
 186                                const char *path_mask,
 187                                uint32 dirtype,
 188                                int info_level,
 189                                int requires_resume_key,
 190                                bool dont_descend,
 191                                bool ask_sharemode,
 192                                uint8_t align,
 193                                bool do_pad,
 194                                char **ppdata,
 195                                char *base_data,
 196                                char *end_data,
 197                                int space_remaining,
 198                                bool *out_of_space,
 199                                bool *got_exact_match,
 200                                int *_last_entry_off,
 201                                struct ea_list *name_list);
 202
 203 NTSTATUS smbd_calculate_access_mask(connection_struct *conn,
 204                                     const struct smb_filename *smb_fname,
 205                                     uint32_t access_mask,
 206                                     uint32_t *access_mask_out);
 207
 208 void smbd_notify_cancel_by_smbreq(const struct smb_request *smbreq);
 209
 210 void smbd_server_connection_terminate_ex(struct smbd_server_connection *sconn,
 211                                          const char *reason,
 212                                          const char *location);
 213 #define smbd_server_connection_terminate(sconn, reason) \
 214         smbd_server_connection_terminate_ex(sconn, reason, __location__)
 215
 216 const char *smb2_opcode_name(uint16_t opcode);
 217 bool smbd_is_smb2_header(const uint8_t *inbuf, size_t size);
 218
 219 void reply_smb2002(struct smb_request *req, uint16_t choice);
 220 void reply_smb20ff(struct smb_request *req, uint16_t choice);
 221 void smbd_smb2_first_negprot(struct smbd_server_connection *sconn,
 222                              uint8_t *inbuf, size_t size);
 223
 224 NTSTATUS smbd_smb2_request_error_ex(struct smbd_smb2_request *req,
 225                                     NTSTATUS status,
 226                                     DATA_BLOB *info,
 227                                     const char *location);
 228 #define smbd_smb2_request_error(req, status) \
 229         smbd_smb2_request_error_ex(req, status, NULL, __location__)
 230 NTSTATUS smbd_smb2_request_done_ex(struct smbd_smb2_request *req,
 231                                    NTSTATUS status,
 232                                    DATA_BLOB body, DATA_BLOB *dyn,
 233                                    const char *location);
 234 #define smbd_smb2_request_done(req, body, dyn) \
 235         smbd_smb2_request_done_ex(req, NT_STATUS_OK, body, dyn, __location__)
 236
 237 NTSTATUS smbd_smb2_send_oplock_break(struct smbd_server_connection *sconn,
 238                                      uint64_t file_id_persistent,
 239                                      uint64_t file_id_volatile,
 240                                      uint8_t oplock_level);
 241
 242 NTSTATUS smbd_smb2_request_pending_queue(struct smbd_smb2_request *req,
 243                                          struct tevent_req *subreq,
 244                                          uint32_t defer_time);
 245
 246 struct smb_request *smbd_smb2_fake_smb_request(struct smbd_smb2_request *req);
 247 void remove_smb2_chained_fsp(files_struct *fsp);
 248
 249 NTSTATUS smbd_smb2_request_verify_creditcharge(struct smbd_smb2_request *req,
 250                                                uint32_t data_length);
 251
 252 NTSTATUS smbd_smb2_request_verify_sizes(struct smbd_smb2_request *req,
 253                                         size_t expected_body_size);
 254
 255 NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req);
 256 NTSTATUS smbd_smb2_request_process_sesssetup(struct smbd_smb2_request *req);
 257 NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req);
 258 NTSTATUS smbd_smb2_request_process_tcon(struct smbd_smb2_request *req);
 259 NTSTATUS smbd_smb2_request_process_tdis(struct smbd_smb2_request *req);
 260 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req);
 261 NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req);
 262 NTSTATUS smbd_smb2_request_process_flush(struct smbd_smb2_request *req);
 263 NTSTATUS smbd_smb2_request_process_read(struct smbd_smb2_request *req);
 264 NTSTATUS smb2_read_complete(struct tevent_req *req, ssize_t nread, int err);
 265 NTSTATUS smbd_smb2_request_process_write(struct smbd_smb2_request *req);
 266 NTSTATUS smb2_write_complete(struct tevent_req *req, ssize_t nwritten, int err);
 267 NTSTATUS smb2_write_complete_nosync(struct tevent_req *req, ssize_t nwritten,
 268                                     int err);
 269 NTSTATUS smbd_smb2_request_process_lock(struct smbd_smb2_request *req);
 270 NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req);
 271 NTSTATUS smbd_smb2_request_process_keepalive(struct smbd_smb2_request *req);
 272 NTSTATUS smbd_smb2_request_process_find(struct smbd_smb2_request *req);
 273 NTSTATUS smbd_smb2_request_process_notify(struct smbd_smb2_request *req);
 274 NTSTATUS smbd_smb2_request_process_getinfo(struct smbd_smb2_request *req);
 275 NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req);
 276 NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req);
 277 NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req);
 278 void smbd_smb2_request_dispatch_immediate(struct tevent_context *ctx,
 279                                 struct tevent_immediate *im,
 280                                 void *private_data);
 281
 282 /* SMB1 -> SMB2 glue. */
 283 void send_break_message_smb2(files_struct *fsp, int level);
 284 struct blocking_lock_record *get_pending_smb2req_blr(struct smbd_smb2_request *smb2req);
 285 bool push_blocking_lock_request_smb2( struct byte_range_lock *br_lck,
 286                                 struct smb_request *req,
 287                                 files_struct *fsp,
 288                                 int lock_timeout,
 289                                 int lock_num,
 290                                 uint64_t smblctx,
 291                                 enum brl_type lock_type,
 292                                 enum brl_flavour lock_flav,
 293                                 uint64_t offset,
 294                                 uint64_t count,
 295                                 uint64_t blocking_smblctx);
 296 void process_blocking_lock_queue_smb2(
 297         struct smbd_server_connection *sconn, struct timeval tv_curr);
 298 void cancel_pending_lock_requests_by_fid_smb2(files_struct *fsp,
 299                         struct byte_range_lock *br_lck,
 300                         enum file_close_type close_type);
 301 /* From smbd/smb2_create.c */
 302 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level);
 303 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
 304                         struct timeval *p_request_time,
 305                         void **pp_state);
 306 bool open_was_deferred_smb2(struct smbd_server_connection *sconn,
 307                             uint64_t mid);
 308 void remove_deferred_open_message_smb2(
 309         struct smbd_server_connection *sconn, uint64_t mid);
 310 bool schedule_deferred_open_message_smb2(
 311         struct smbd_server_connection *sconn, uint64_t mid);
 312 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
 313                         struct timeval request_time,
 314                         struct timeval timeout,
 315                         struct file_id id,
 316                         char *private_data,
 317                         size_t priv_len);
 318
 319 struct smbXsrv_connection {
 320         struct smbd_server_connection *sconn;
 321
 322         const struct tsocket_address *local_address;
 323         const struct tsocket_address *remote_address;
 324         const char *remote_hostname;
 325
 326         struct tevent_context *ev_ctx;
 327         struct messaging_context *msg_ctx;
 328
 329         enum protocol_types protocol;
 330
 331         struct {
 332                 struct {
 333                         uint32_t capabilities;
 334                         struct GUID guid;
 335                         uint16_t security_mode;
 336                         uint16_t num_dialects;
 337                         uint16_t *dialects;
 338                 } client;
 339                 struct {
 340                         uint32_t capabilities;
 341                         struct GUID guid;
 342                         uint16_t security_mode;
 343                         uint16_t dialect;
 344                         uint32_t max_trans;
 345                         uint32_t max_read;
 346                         uint32_t max_write;
 347                 } server;
 348         } smb2;
 349
 350         struct msg_state *msg_state;
 351
 352         /*
 353          * Link into libasys for asynchronous operations
 354          */
 355         struct asys_context *asys_ctx;
 356         struct tevent_fd *asys_fde;
 357
 358         uint64_t smbd_idle_profstamp;
 359
 360         /*
 361          * this session_table is used for SMB1 and SMB2,
 362          */
 363         struct smbXsrv_session_table *session_table;
 364         /*
 365          * this tcon_table is only used for SMB1.
 366          */
 367         struct smbXsrv_tcon_table *tcon_table;
 368         /*
 369          * this open_table is used for SMB1 and SMB2,
 370          * because we have a global sconn->real_max_open_files
 371          * limit.
 372          */
 373         struct smbXsrv_open_table *open_table;
 374 };
 375
 376 NTSTATUS smbXsrv_version_global_init(const struct server_id *server_id);
 377 uint32_t smbXsrv_version_global_current(void);
 378
 379 NTSTATUS smbXsrv_connection_init_tables(struct smbXsrv_connection *conn,
 380                                         enum protocol_types protocol);
 381
 382 NTSTATUS smbXsrv_session_global_init(void);
 383 NTSTATUS smbXsrv_session_create(struct smbXsrv_connection *conn,
 384                                 NTTIME now,
 385                                 struct smbXsrv_session **_session);
 386 NTSTATUS smbXsrv_session_update(struct smbXsrv_session *session);
 387 NTSTATUS smbXsrv_session_logoff(struct smbXsrv_session *session);
 388 NTSTATUS smbXsrv_session_logoff_all(struct smbXsrv_connection *conn);
 389 NTSTATUS smb1srv_session_table_init(struct smbXsrv_connection *conn);
 390 NTSTATUS smb1srv_session_lookup(struct smbXsrv_connection *conn,
 391                                 uint16_t vuid, NTTIME now,
 392                                 struct smbXsrv_session **session);
 393 NTSTATUS smb2srv_session_table_init(struct smbXsrv_connection *conn);
 394 NTSTATUS smb2srv_session_lookup(struct smbXsrv_connection *conn,
 395                                 uint64_t session_id, NTTIME now,
 396                                 struct smbXsrv_session **session);
 397 struct tevent_req *smb2srv_session_close_previous_send(TALLOC_CTX *mem_ctx,
 398                                         struct tevent_context *ev,
 399                                         struct smbXsrv_connection *conn,
 400                                         struct auth_session_info *session_info,
 401                                         uint64_t previous_session_id,
 402                                         uint64_t current_session_id);
 403 NTSTATUS smb2srv_session_close_previous_recv(struct tevent_req *req);
 404
 405 NTSTATUS smbXsrv_tcon_global_init(void);
 406 NTSTATUS smbXsrv_tcon_update(struct smbXsrv_tcon *tcon);
 407 NTSTATUS smbXsrv_tcon_disconnect(struct smbXsrv_tcon *tcon, uint64_t vuid);
 408 NTSTATUS smb1srv_tcon_table_init(struct smbXsrv_connection *conn);
 409 NTSTATUS smb1srv_tcon_create(struct smbXsrv_connection *conn,
 410                              NTTIME now,
 411                              struct smbXsrv_tcon **_tcon);
 412 NTSTATUS smb1srv_tcon_lookup(struct smbXsrv_connection *conn,
 413                              uint16_t tree_id, NTTIME now,
 414                              struct smbXsrv_tcon **tcon);
 415 NTSTATUS smb1srv_tcon_disconnect_all(struct smbXsrv_connection *conn);
 416 NTSTATUS smb2srv_tcon_table_init(struct smbXsrv_session *session);
 417 NTSTATUS smb2srv_tcon_create(struct smbXsrv_session *session,
 418                              NTTIME now,
 419                              struct smbXsrv_tcon **_tcon);
 420 NTSTATUS smb2srv_tcon_lookup(struct smbXsrv_session *session,
 421                              uint32_t tree_id, NTTIME now,
 422                              struct smbXsrv_tcon **tcon);
 423 NTSTATUS smb2srv_tcon_disconnect_all(struct smbXsrv_session *session);
 424
 425 NTSTATUS smbXsrv_open_global_init(void);
 426 NTSTATUS smbXsrv_open_create(struct smbXsrv_connection *conn,
 427                              struct auth_session_info *session_info,
 428                              NTTIME now,
 429                              struct smbXsrv_open **_open);
 430 uint32_t smbXsrv_open_hash(struct smbXsrv_open *_open);
 431 NTSTATUS smbXsrv_open_update(struct smbXsrv_open *_open);
 432 NTSTATUS smbXsrv_open_close(struct smbXsrv_open *op, NTTIME now);
 433 NTSTATUS smb1srv_open_table_init(struct smbXsrv_connection *conn);
 434 NTSTATUS smb1srv_open_lookup(struct smbXsrv_connection *conn,
 435                              uint16_t fnum, NTTIME now,
 436                              struct smbXsrv_open **_open);
 437 NTSTATUS smb2srv_open_table_init(struct smbXsrv_connection *conn);
 438 NTSTATUS smb2srv_open_lookup(struct smbXsrv_connection *conn,
 439                              uint64_t persistent_id,
 440                              uint64_t volatile_id,
 441                              NTTIME now,
 442                              struct smbXsrv_open **_open);
 443
 444 struct smbd_smb2_request {
 445         struct smbd_smb2_request *prev, *next;
 446
 447         struct smbd_server_connection *sconn;
 448
 449         /* the session the request operates on, maybe NULL */
 450         struct smbXsrv_session *session;
 451         uint64_t last_session_id;
 452
 453         /* the tcon the request operates on, maybe NULL */
 454         struct smbXsrv_tcon *tcon;
 455         uint32_t last_tid;
 456
 457         int current_idx;
 458         bool do_signing;
 459         bool do_encryption;
 460         struct tevent_timer *async_te;
 461         bool cancelled;
 462         bool compound_related;
 463
 464         /*
 465          * the encryption key for the whole
 466          * compound chain
 467          */
 468         DATA_BLOB first_key;
 469         /*
 470          * the signing key for the last
 471          * request/response of a compound chain
 472          */
 473         DATA_BLOB last_key;
 474
 475         struct timeval request_time;
 476
 477         /* fake smb1 request. */
 478         struct smb_request *smb1req;
 479         struct files_struct *compat_chain_fsp;
 480
 481         NTSTATUS next_status;
 482
 483         /*
 484          * The sub request for async backend calls.
 485          * This is used for SMB2 Cancel.
 486          */
 487         struct tevent_req *subreq;
 488
 489 #define SMBD_SMB2_TF_IOV_OFS 0
 490 #define SMBD_SMB2_HDR_IOV_OFS 1
 491 #define SMBD_SMB2_BODY_IOV_OFS 2
 492 #define SMBD_SMB2_DYN_IOV_OFS 3
 493
 494 #define SMBD_SMB2_NUM_IOV_PER_REQ 4
 495
 496 #define SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,ofs) \
 497         (&req->dir.vector[(idx)+(ofs)])
 498
 499 #define SMBD_SMB2_IDX_TF_IOV(req,dir,idx) \
 500         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_TF_IOV_OFS)
 501 #define SMBD_SMB2_IDX_HDR_IOV(req,dir,idx) \
 502         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_HDR_IOV_OFS)
 503 #define SMBD_SMB2_IDX_BODY_IOV(req,dir,idx) \
 504         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_BODY_IOV_OFS)
 505 #define SMBD_SMB2_IDX_DYN_IOV(req,dir,idx) \
 506         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_DYN_IOV_OFS)
 507
 508 #define SMBD_SMB2_IN_TF_IOV(req)    SMBD_SMB2_IDX_TF_IOV(req,in,req->current_idx)
 509 #define SMBD_SMB2_IN_TF_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_TF_IOV(req)->iov_base)
 510 #define SMBD_SMB2_IN_HDR_IOV(req)    SMBD_SMB2_IDX_HDR_IOV(req,in,req->current_idx)
 511 #define SMBD_SMB2_IN_HDR_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_HDR_IOV(req)->iov_base)
 512 #define SMBD_SMB2_IN_BODY_IOV(req)   SMBD_SMB2_IDX_BODY_IOV(req,in,req->current_idx)
 513 #define SMBD_SMB2_IN_BODY_PTR(req)   (uint8_t *)(SMBD_SMB2_IN_BODY_IOV(req)->iov_base)
 514 #define SMBD_SMB2_IN_BODY_LEN(req)   (SMBD_SMB2_IN_BODY_IOV(req)->iov_len)
 515 #define SMBD_SMB2_IN_DYN_IOV(req)    SMBD_SMB2_IDX_DYN_IOV(req,in,req->current_idx)
 516 #define SMBD_SMB2_IN_DYN_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_DYN_IOV(req)->iov_base)
 517 #define SMBD_SMB2_IN_DYN_LEN(req)    (SMBD_SMB2_IN_DYN_IOV(req)->iov_len)
 518
 519 #define SMBD_SMB2_OUT_TF_IOV(req)   SMBD_SMB2_IDX_TF_IOV(req,out,req->current_idx)
 520 #define SMBD_SMB2_OUT_TF_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_TF_IOV(req)->iov_base)
 521 #define SMBD_SMB2_OUT_HDR_IOV(req)   SMBD_SMB2_IDX_HDR_IOV(req,out,req->current_idx)
 522 #define SMBD_SMB2_OUT_HDR_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_HDR_IOV(req)->iov_base)
 523 #define SMBD_SMB2_OUT_BODY_IOV(req)  SMBD_SMB2_IDX_BODY_IOV(req,out,req->current_idx)
 524 #define SMBD_SMB2_OUT_BODY_PTR(req)  (uint8_t *)(SMBD_SMB2_OUT_BODY_IOV(req)->iov_base)
 525 #define SMBD_SMB2_OUT_BODY_LEN(req)  (SMBD_SMB2_OUT_BODY_IOV(req)->iov_len)
 526 #define SMBD_SMB2_OUT_DYN_IOV(req)   SMBD_SMB2_IDX_DYN_IOV(req,out,req->current_idx)
 527 #define SMBD_SMB2_OUT_DYN_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_DYN_IOV(req)->iov_base)
 528 #define SMBD_SMB2_OUT_DYN_LEN(req)   (SMBD_SMB2_OUT_DYN_IOV(req)->iov_len)
 529
 530         struct {
 531                 /*
 532                  * vector[0] TRANSPORT HEADER (empty)
 533                  * .
 534                  * vector[1] SMB2_TRANSFORM (optional)
 535                  * vector[2] SMB2
 536                  * vector[3] fixed body
 537                  * vector[4] dynamic body
 538                  * .
 539                  * .
 540                  * .
 541                  * vector[5] SMB2_TRANSFORM (optional)
 542                  * vector[6] SMB2
 543                  * vector[7] fixed body
 544                  * vector[8] dynamic body
 545                  * .
 546                  * .
 547                  * .
 548                  */
 549                 struct iovec *vector;
 550                 int vector_count;
 551         } in;
 552         struct {
 553                 /* the NBT header is not allocated */
 554                 uint8_t nbt_hdr[4];
 555                 /*
 556                  * vector[0] TRANSPORT HEADER
 557                  * .
 558                  * vector[1] SMB2_TRANSFORM (optional)
 559                  * vector[2] SMB2
 560                  * vector[3] fixed body
 561                  * vector[4] dynamic body
 562                  * .
 563                  * .
 564                  * .
 565                  * vector[5] SMB2_TRANSFORM (empty)
 566                  * vector[6] SMB2
 567                  * vector[7] fixed body
 568                  * vector[8] dynamic body
 569                  * .
 570                  * .
 571                  * .
 572                  */
 573                 struct iovec *vector;
 574                 int vector_count;
 575         } out;
 576 };
 577
 578 struct smbd_server_connection;
 579 struct user_struct;
 580
 581 struct pending_message_list;
 582 struct pending_auth_data;
 583
 584 struct user_struct {
 585         struct user_struct *next, *prev;
 586         uint64_t vuid; /* Tag for this entry. */
 587
 588         char *session_keystr; /* used by utmp and pam session code.
 589                                  TDB key string */
 590         int homes_snum;
 591
 592         struct auth_session_info *session_info;
 593
 594         struct smbXsrv_session *session;
 595 };
 596
 597 struct smbd_server_connection {
 598         int sock;
 599         const struct tsocket_address *local_address;
 600         const struct tsocket_address *remote_address;
 601         const char *remote_hostname;
 602         struct tevent_context *ev_ctx;
 603         struct messaging_context *msg_ctx;
 604         struct sys_notify_context *sys_notify_ctx;
 605         struct notify_context *notify_ctx;
 606         struct {
 607                 bool got_session;
 608         } nbt;
 609         bool using_smb2;
 610         int trans_num;
 611
 612         size_t num_users;
 613         struct user_struct *users;
 614
 615         size_t num_connections;
 616         struct connection_struct *connections;
 617
 618         size_t num_files;
 619         struct files_struct *files;
 620
 621         int real_max_open_files;
 622         struct fsp_singleton_cache fsp_fi_cache;
 623
 624         struct pending_message_list *deferred_open_queue;
 625
 626
 627         /* open directory handles. */
 628         struct {
 629                 struct bitmap *dptr_bmap;
 630                 struct dptr_struct *dirptrs;
 631                 int dirhandles_open;
 632         } searches;
 633
 634         uint64_t num_requests;
 635
 636         /* Current number of oplocks we have outstanding. */
 637         struct {
 638                 int32_t exclusive_open;
 639                 int32_t level_II_open;
 640                 struct kernel_oplocks *kernel_ops;
 641         } oplocks;
 642
 643         struct {
 644                 struct fd_event *fde;
 645
 646                 struct {
 647                         /*
 648                          * fd for the fcntl lock mutexing access to our sock
 649                          */
 650                         int socket_lock_fd;
 651
 652                         /*
 653                          * fd for the trusted pipe from
 654                          * echo handler child
 655                          */
 656                         int trusted_fd;
 657
 658                         /*
 659                          * fde for the trusted_fd
 660                          */
 661                         struct fd_event *trusted_fde;
 662
 663                         /*
 664                          * Reference count for the fcntl lock to
 665                          * allow recursive locks.
 666                          */
 667                         int ref_count;
 668                 } echo_handler;
 669
 670                 struct {
 671                         bool encrypted_passwords;
 672                         bool spnego;
 673                         struct auth4_context *auth_context;
 674                         bool done;
 675                         /*
 676                          * Size of the data we can receive. Set by us.
 677                          * Can be modified by the max xmit parameter.
 678                          */
 679                         int max_recv;
 680                 } negprot;
 681
 682                 struct {
 683                         uint16_t client_major;
 684                         uint16_t client_minor;
 685                         uint32_t client_cap_low;
 686                         uint32_t client_cap_high;
 687                 } unix_info;
 688
 689                 struct {
 690                         bool done_sesssetup;
 691                         /*
 692                          * Size of data we can send to client. Set
 693                          *  by the client for all protocols above CORE.
 694                          *  Set by us for CORE protocol.
 695                          */
 696                         int max_send;
 697                         uint64_t last_session_tag;
 698                 } sessions;
 699                 struct smb_signing_state *signing_state;
 700
 701                 struct notify_mid_map *notify_mid_maps;
 702
 703                 struct {
 704                         /* dlink list we store pending lock records on. */
 705                         struct blocking_lock_record *blocking_lock_queue;
 706                         /* dlink list we move cancelled lock records onto. */
 707                         struct blocking_lock_record *blocking_lock_cancelled_queue;
 708
 709                         /* The event that makes us process our blocking lock queue */
 710                         struct timed_event *brl_timeout;
 711
 712                         bool blocking_lock_unlock_state;
 713                         bool blocking_lock_cancel_state;
 714                 } locks;
 715         } smb1;
 716         struct {
 717                 struct tevent_queue *recv_queue;
 718                 struct tevent_queue *send_queue;
 719                 struct tstream_context *stream;
 720                 bool negprot_2ff;
 721                 struct {
 722                         /* The event that makes us process our blocking lock queue */
 723                         struct timed_event *brl_timeout;
 724                         bool blocking_lock_unlock_state;
 725                 } locks;
 726                 struct smbd_smb2_request *requests;
 727                 /*
 728                  * seqnum_low is the lowest sequence number
 729                  * we will accept.
 730                  */
 731                 uint64_t seqnum_low;
 732                 /*
 733                  * seqnum_range is the range of credits we have
 734                  * granted from the sequence windows starting
 735                  * at seqnum_low.
 736                  *
 737                  * This gets incremented when new credits are
 738                  * granted and gets decremented when the
 739                  * lowest sequence number is consumed
 740                  * (when seqnum_low gets incremented).
 741                  */
 742                 uint16_t seqnum_range;
 743                 /*
 744                  * credits_grantedThe number of credits we have currently granted
 745                  * to the client.
 746                  *
 747                  * This gets incremented when new credits are
 748                  * granted and gets decremented when any credit
 749                  * is comsumed.
 750                  *
 751                  * Note: the decrementing is different compared
 752                  *       to seqnum_range.
 753                  */
 754                 uint16_t credits_granted;
 755                 /*
 756                  * The maximum number of credits we will ever
 757                  * grant to the client.
 758                  *
 759                  * Typically we will only grant 1/16th of
 760                  * max_credits.
 761                  *
 762                  * This is the "server max credits" parameter.
 763                  */
 764                 uint16_t max_credits;
 765                 /*
 766                  * a bitmap of size max_credits
 767                  */
 768                 struct bitmap *credits_bitmap;
 769                 bool supports_multicredit;
 770                 uint32_t max_trans;
 771                 uint32_t max_read;
 772                 uint32_t max_write;
 773                 bool compound_related_in_progress;
 774         } smb2;
 775
 776         struct smbXsrv_connection *conn;
 777 };
 778
 779 extern struct smbXsrv_connection *global_smbXsrv_connection;
 780
 781 void smbd_init_globals(void);