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 #include "smbprofile.h"
  24
  25 #ifdef USE_DMAPI
  26 struct smbd_dmapi_context;
  27 extern struct smbd_dmapi_context *dmapi_ctx;
  28 #endif
  29
  30 /* how many write cache buffers have been allocated */
  31 extern unsigned int allocated_write_caches;
  32
  33 /* A singleton cache to speed up searching by dev/inode. */
  34 struct fsp_singleton_cache {
  35         files_struct *fsp;
  36         struct file_id id;
  37 };
  38
  39 extern const struct mangle_fns *mangle_fns;
  40
  41 extern unsigned char *chartest;
  42 struct tdb_context;
  43 extern struct tdb_context *tdb_mangled_cache;
  44
  45 /*
  46   this determines how many characters are used from the original filename
  47   in the 8.3 mangled name. A larger value leads to a weaker hash and more collisions.
  48   The largest possible value is 6.
  49 */
  50 extern unsigned mangle_prefix;
  51
  52 struct msg_state;
  53
  54 extern bool logged_ioctl_message;
  55
  56 extern int trans_num;
  57
  58 extern time_t last_smb_conf_reload_time;
  59 extern time_t last_printer_reload_time;
  60 extern pid_t background_lpq_updater_pid;
  61
  62 /****************************************************************************
  63  structure to hold a linked list of queued messages.
  64  for processing.
  65 ****************************************************************************/
  66 extern uint32_t common_flags2;
  67
  68 extern struct smb_trans_enc_state *partial_srv_trans_enc_ctx;
  69 extern struct smb_trans_enc_state *srv_trans_enc_ctx;
  70
  71 struct sec_ctx {
  72         struct security_unix_token ut;
  73         struct security_token *token;
  74 };
  75 /* A stack of security contexts.  We include the current context as being
  76    the first one, so there is room for another MAX_SEC_CTX_DEPTH more. */
  77 extern struct sec_ctx sec_ctx_stack[MAX_SEC_CTX_DEPTH + 1];
  78 extern int sec_ctx_stack_ndx;
  79 extern bool become_uid_done;
  80 extern bool become_gid_done;
  81
  82 extern connection_struct *last_conn;
  83 extern uint16_t last_flags;
  84
  85 extern uint32_t global_client_caps;
  86
  87 extern uint16_t fnf_handle;
  88
  89 struct conn_ctx {
  90         connection_struct *conn;
  91         uint64_t vuid;
  92         bool need_chdir;
  93         bool done_chdir;
  94         userdom_struct user_info;
  95 };
  96 /* A stack of current_user connection contexts. */
  97 extern struct conn_ctx conn_ctx_stack[MAX_SEC_CTX_DEPTH];
  98 extern int conn_ctx_stack_ndx;
  99
 100 struct vfs_init_function_entry;
 101 extern struct vfs_init_function_entry *backends;
 102 extern char *sparse_buf;
 103 extern char *LastDir;
 104
 105 struct smbd_parent_context;
 106 extern struct smbd_parent_context *am_parent;
 107 extern struct memcache *smbd_memcache_ctx;
 108 extern bool exit_firsttime;
 109
 110 struct tstream_context;
 111 struct smbd_smb2_request;
 112
 113 DATA_BLOB negprot_spnego(TALLOC_CTX *ctx, struct smbXsrv_connection *xconn);
 114
 115 void smbd_lock_socket(struct smbXsrv_connection *xconn);
 116 void smbd_unlock_socket(struct smbXsrv_connection *xconn);
 117
 118 NTSTATUS smbd_do_locking(struct smb_request *req,
 119                          files_struct *fsp,
 120                          uint8_t type,
 121                          int32_t timeout,
 122                          uint16_t num_locks,
 123                          struct smbd_lock_element *locks,
 124                          bool *async);
 125 NTSTATUS smbd_do_unlocking(struct smb_request *req,
 126                            files_struct *fsp,
 127                            uint16_t num_ulocks,
 128                            struct smbd_lock_element *ulocks);
 129
 130 NTSTATUS smbd_do_qfilepathinfo(connection_struct *conn,
 131                                TALLOC_CTX *mem_ctx,
 132                                uint16_t info_level,
 133                                files_struct *fsp,
 134                                struct smb_filename *smb_fname,
 135                                bool delete_pending,
 136                                struct timespec write_time_ts,
 137                                struct ea_list *ea_list,
 138                                int lock_data_count,
 139                                char *lock_data,
 140                                uint16_t flags2,
 141                                unsigned int max_data_bytes,
 142                                size_t *fixed_portion,
 143                                char **ppdata,
 144                                unsigned int *pdata_size);
 145
 146 NTSTATUS smbd_do_setfsinfo(connection_struct *conn,
 147                                 struct smb_request *req,
 148                                 TALLOC_CTX *mem_ctx,
 149                                 uint16_t info_level,
 150                                 files_struct *fsp,
 151                                 const DATA_BLOB *pdata);
 152
 153 NTSTATUS smbd_do_setfilepathinfo(connection_struct *conn,
 154                                 struct smb_request *req,
 155                                 TALLOC_CTX *mem_ctx,
 156                                 uint16_t info_level,
 157                                 files_struct *fsp,
 158                                 struct smb_filename *smb_fname,
 159                                 char **ppdata, int total_data,
 160                                 int *ret_data_size);
 161
 162 NTSTATUS smbd_do_qfsinfo(struct smbXsrv_connection *xconn,
 163                          connection_struct *conn,
 164                          TALLOC_CTX *mem_ctx,
 165                          uint16_t info_level,
 166                          uint16_t flags2,
 167                          unsigned int max_data_bytes,
 168                          size_t *fixed_portion,
 169                          struct smb_filename *smb_fname,
 170                          char **ppdata,
 171                          int *ret_data_len);
 172
 173 bool smbd_dirptr_get_entry(TALLOC_CTX *ctx,
 174                            struct dptr_struct *dirptr,
 175                            const char *mask,
 176                            uint32_t dirtype,
 177                            bool dont_descend,
 178                            bool ask_sharemode,
 179                            bool (*match_fn)(TALLOC_CTX *ctx,
 180                                             void *private_data,
 181                                             const char *dname,
 182                                             const char *mask,
 183                                             char **_fname),
 184                            bool (*mode_fn)(TALLOC_CTX *ctx,
 185                                            void *private_data,
 186                                            struct smb_filename *smb_fname,
 187                                            uint32_t *_mode),
 188                            void *private_data,
 189                            char **_fname,
 190                            struct smb_filename **_smb_fname,
 191                            uint32_t *_mode,
 192                            long *_prev_offset);
 193
 194 NTSTATUS smbd_dirptr_lanman2_entry(TALLOC_CTX *ctx,
 195                                connection_struct *conn,
 196                                struct dptr_struct *dirptr,
 197                                uint16_t flags2,
 198                                const char *path_mask,
 199                                uint32_t dirtype,
 200                                int info_level,
 201                                int requires_resume_key,
 202                                bool dont_descend,
 203                                bool ask_sharemode,
 204                                uint8_t align,
 205                                bool do_pad,
 206                                char **ppdata,
 207                                char *base_data,
 208                                char *end_data,
 209                                int space_remaining,
 210                                bool *got_exact_match,
 211                                int *_last_entry_off,
 212                                struct ea_list *name_list,
 213                                struct file_id *file_id);
 214
 215 NTSTATUS smbd_calculate_access_mask(connection_struct *conn,
 216                                     const struct smb_filename *smb_fname,
 217                                     bool use_privs,
 218                                     uint32_t access_mask,
 219                                     uint32_t *access_mask_out);
 220
 221 void smbd_notify_cancel_by_smbreq(const struct smb_request *smbreq);
 222
 223 void smbd_server_connection_terminate_ex(struct smbXsrv_connection *xconn,
 224                                          const char *reason,
 225                                          const char *location);
 226 #define smbd_server_connection_terminate(xconn, reason) \
 227         smbd_server_connection_terminate_ex(xconn, reason, __location__)
 228
 229 const char *smb2_opcode_name(uint16_t opcode);
 230 bool smbd_is_smb2_header(const uint8_t *inbuf, size_t size);
 231 bool smbd_smb2_is_compound(const struct smbd_smb2_request *req);
 232
 233 NTSTATUS smbd_add_connection(struct smbXsrv_client *client, int sock_fd,
 234                              struct smbXsrv_connection **_xconn);
 235
 236 void reply_smb2002(struct smb_request *req, uint16_t choice);
 237 void reply_smb20ff(struct smb_request *req, uint16_t choice);
 238 void smbd_smb2_process_negprot(struct smbXsrv_connection *xconn,
 239                                uint64_t expected_seq_low,
 240                                const uint8_t *inpdu, size_t size);
 241
 242 DATA_BLOB smbd_smb2_generate_outbody(struct smbd_smb2_request *req, size_t size);
 243
 244 NTSTATUS smbd_smb2_request_error_ex(struct smbd_smb2_request *req,
 245                                     NTSTATUS status,
 246                                     DATA_BLOB *info,
 247                                     const char *location);
 248 #define smbd_smb2_request_error(req, status) \
 249         smbd_smb2_request_error_ex(req, status, NULL, __location__)
 250 NTSTATUS smbd_smb2_request_done_ex(struct smbd_smb2_request *req,
 251                                    NTSTATUS status,
 252                                    DATA_BLOB body, DATA_BLOB *dyn,
 253                                    const char *location);
 254 #define smbd_smb2_request_done(req, body, dyn) \
 255         smbd_smb2_request_done_ex(req, NT_STATUS_OK, body, dyn, __location__)
 256
 257 NTSTATUS smbd_smb2_send_oplock_break(struct smbXsrv_connection *xconn,
 258                                      struct smbXsrv_session *session,
 259                                      struct smbXsrv_tcon *tcon,
 260                                      struct smbXsrv_open *op,
 261                                      uint8_t oplock_level);
 262 NTSTATUS smbd_smb2_send_lease_break(struct smbXsrv_connection *xconn,
 263                                     uint16_t new_epoch,
 264                                     uint32_t lease_flags,
 265                                     struct smb2_lease_key *lease_key,
 266                                     uint32_t current_lease_state,
 267                                     uint32_t new_lease_state);
 268
 269 NTSTATUS smbd_smb2_request_pending_queue(struct smbd_smb2_request *req,
 270                                          struct tevent_req *subreq,
 271                                          uint32_t defer_time);
 272
 273 struct smb_request *smbd_smb2_fake_smb_request(struct smbd_smb2_request *req);
 274 size_t smbd_smb2_unread_bytes(struct smbd_smb2_request *req);
 275 void remove_smb2_chained_fsp(files_struct *fsp);
 276
 277 NTSTATUS smbd_smb2_request_verify_creditcharge(struct smbd_smb2_request *req,
 278                                                uint32_t data_length);
 279
 280 NTSTATUS smbd_smb2_request_verify_sizes(struct smbd_smb2_request *req,
 281                                         size_t expected_body_size);
 282
 283 void smb2_request_set_async_internal(struct smbd_smb2_request *req,
 284                                      bool async_internal);
 285
 286 enum protocol_types smbd_smb2_protocol_dialect_match(const uint8_t *indyn,
 287                                                      const int dialect_count,
 288                                                      uint16_t *dialect);
 289 NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req);
 290 NTSTATUS smbd_smb2_request_process_sesssetup(struct smbd_smb2_request *req);
 291 NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req);
 292 NTSTATUS smbd_smb2_request_process_tcon(struct smbd_smb2_request *req);
 293 NTSTATUS smbd_smb2_request_process_tdis(struct smbd_smb2_request *req);
 294 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req);
 295 NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req);
 296 NTSTATUS smbd_smb2_request_process_flush(struct smbd_smb2_request *req);
 297 NTSTATUS smbd_smb2_request_process_read(struct smbd_smb2_request *req);
 298 NTSTATUS smb2_read_complete(struct tevent_req *req, ssize_t nread, int err);
 299 NTSTATUS smbd_smb2_request_process_write(struct smbd_smb2_request *req);
 300 NTSTATUS smb2_write_complete(struct tevent_req *req, ssize_t nwritten, int err);
 301 NTSTATUS smb2_write_complete_nosync(struct tevent_req *req, ssize_t nwritten,
 302                                     int err);
 303 NTSTATUS smbd_smb2_request_process_lock(struct smbd_smb2_request *req);
 304 NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req);
 305 NTSTATUS smbd_smb2_request_process_keepalive(struct smbd_smb2_request *req);
 306 NTSTATUS smbd_smb2_request_process_query_directory(struct smbd_smb2_request *req);
 307 NTSTATUS smbd_smb2_request_process_notify(struct smbd_smb2_request *req);
 308 NTSTATUS smbd_smb2_request_process_getinfo(struct smbd_smb2_request *req);
 309 NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req);
 310 NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req);
 311 NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req);
 312 void smbd_smb2_request_dispatch_immediate(struct tevent_context *ctx,
 313                                 struct tevent_immediate *im,
 314                                 void *private_data);
 315
 316 struct deferred_open_record;
 317
 318 /* SMB1 -> SMB2 glue. */
 319 void send_break_message_smb2(files_struct *fsp,
 320                              uint32_t break_from,
 321                              uint32_t break_to);
 322 struct blocking_lock_record *get_pending_smb2req_blr(struct smbd_smb2_request *smb2req);
 323 bool push_blocking_lock_request_smb2( struct byte_range_lock *br_lck,
 324                                 struct smb_request *req,
 325                                 files_struct *fsp,
 326                                 int lock_timeout,
 327                                 int lock_num,
 328                                 uint64_t smblctx,
 329                                 enum brl_type lock_type,
 330                                 enum brl_flavour lock_flav,
 331                                 uint64_t offset,
 332                                 uint64_t count,
 333                                 uint64_t blocking_smblctx);
 334 void process_blocking_lock_queue_smb2(
 335         struct smbd_server_connection *sconn, struct timeval tv_curr);
 336 void cancel_pending_lock_requests_by_fid_smb2(files_struct *fsp,
 337                         struct byte_range_lock *br_lck,
 338                         enum file_close_type close_type);
 339 /* From smbd/smb2_create.c */
 340 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level);
 341 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
 342                         struct timeval *p_request_time,
 343                         struct deferred_open_record **open_rec);
 344 bool open_was_deferred_smb2(
 345         struct smbXsrv_connection *xconn, uint64_t mid);
 346 void remove_deferred_open_message_smb2(
 347         struct smbXsrv_connection *xconn, uint64_t mid);
 348 bool schedule_deferred_open_message_smb2(
 349         struct smbXsrv_connection *xconn, uint64_t mid);
 350 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
 351                                 struct timeval request_time,
 352                                 struct timeval timeout,
 353                                 struct file_id id,
 354                                 struct deferred_open_record *open_rec);
 355
 356 struct smbXsrv_client;
 357
 358 struct smbXsrv_preauth {
 359         uint8_t sha512_value[64];
 360 };
 361
 362 struct smbXsrv_connection {
 363         struct smbXsrv_connection *prev, *next;
 364
 365         struct smbXsrv_client *client;
 366
 367         const struct tsocket_address *local_address;
 368         const struct tsocket_address *remote_address;
 369         const char *remote_hostname;
 370
 371         enum protocol_types protocol;
 372
 373         struct {
 374                 NTSTATUS status;
 375                 int sock;
 376                 struct tevent_fd *fde;
 377
 378                 struct {
 379                         bool got_session;
 380                 } nbt;
 381         } transport;
 382
 383         struct {
 384                 struct {
 385                         /*
 386                          * fd for the fcntl lock and process shared
 387                          * robust mutex to coordinate access to the
 388                          * client socket. When the system supports
 389                          * process shared robust mutexes, those are
 390                          * used. If not, then the fcntl lock will be
 391                          * used.
 392                          */
 393                         int socket_lock_fd;
 394 #ifdef HAVE_ROBUST_MUTEXES
 395                         pthread_mutex_t *socket_mutex;
 396 #endif
 397
 398                         /*
 399                          * fd for the trusted pipe from
 400                          * echo handler child
 401                          */
 402                         int trusted_fd;
 403
 404                         /*
 405                          * fde for the trusted_fd
 406                          */
 407                         struct tevent_fd *trusted_fde;
 408
 409                         /*
 410                          * Reference count for the fcntl lock to
 411                          * allow recursive locks.
 412                          */
 413                         int ref_count;
 414                 } echo_handler;
 415
 416                 struct {
 417                         bool encrypted_passwords;
 418                         bool spnego;
 419                         struct auth4_context *auth_context;
 420                         bool done;
 421                         /*
 422                          * Size of the data we can receive. Set by us.
 423                          * Can be modified by the max xmit parameter.
 424                          */
 425                         int max_recv;
 426                 } negprot;
 427
 428                 struct {
 429                         bool done_sesssetup;
 430                         /*
 431                          * Size of data we can send to client. Set
 432                          *  by the client for all protocols above CORE.
 433                          *  Set by us for CORE protocol.
 434                          */
 435                         int max_send;
 436                 } sessions;
 437                 struct smb_signing_state *signing_state;
 438
 439                 struct {
 440                         uint16_t client_major;
 441                         uint16_t client_minor;
 442                         uint32_t client_cap_low;
 443                         uint32_t client_cap_high;
 444                 } unix_info;
 445
 446                 struct msg_state *msg_state;
 447         } smb1;
 448         struct {
 449                 struct smbd_smb2_request_read_state {
 450                         struct smbd_smb2_request *req;
 451                         struct {
 452                                 uint8_t nbt[NBT_HDR_SIZE];
 453                                 bool done;
 454                         } hdr;
 455                         struct iovec vector;
 456                         bool doing_receivefile;
 457                         size_t min_recv_size;
 458                         size_t pktfull;
 459                         size_t pktlen;
 460                         uint8_t *pktbuf;
 461                 } request_read_state;
 462                 struct smbd_smb2_send_queue *send_queue;
 463                 size_t send_queue_len;
 464                 uint64_t sent_bytes;
 465                 struct smbd_smb2_send_queue *ack_queue;
 466
 467                 struct {
 468                         /*
 469                          * seq_low is the lowest sequence number
 470                          * we will accept.
 471                          */
 472                         uint64_t seq_low;
 473                         /*
 474                          * seq_range is the range of credits we have
 475                          * granted from the sequence windows starting
 476                          * at seq_low.
 477                          *
 478                          * This gets incremented when new credits are
 479                          * granted and gets decremented when the
 480                          * lowest sequence number is consumed
 481                          * (when seq_low gets incremented).
 482                          */
 483                         uint16_t seq_range;
 484                         /*
 485                          * The number of credits we have currently granted
 486                          * to the client.
 487                          *
 488                          * This gets incremented when new credits are
 489                          * granted and gets decremented when any credit
 490                          * is comsumed.
 491                          *
 492                          * Note: the decrementing is different compared
 493                          *       to seq_range.
 494                          */
 495                         uint16_t granted;
 496                         /*
 497                          * The maximum number of credits we will ever
 498                          * grant to the client.
 499                          *
 500                          * Typically we will only grant 1/16th of
 501                          * max_credits.
 502                          *
 503                          * This is the "server max credits" parameter.
 504                          */
 505                         uint16_t max;
 506                         /*
 507                          * a bitmap of size max_credits
 508                          */
 509                         struct bitmap *bitmap;
 510                         bool multicredit;
 511                 } credits;
 512
 513                 bool allow_2ff;
 514                 struct {
 515                         uint32_t capabilities;
 516                         struct GUID guid;
 517                         bool guid_verified;
 518                         uint16_t security_mode;
 519                         uint16_t num_dialects;
 520                         uint16_t *dialects;
 521                 } client;
 522                 struct {
 523                         uint32_t capabilities;
 524                         struct GUID guid;
 525                         uint16_t security_mode;
 526                         uint16_t dialect;
 527                         uint32_t max_trans;
 528                         uint32_t max_read;
 529                         uint32_t max_write;
 530                         uint16_t cipher;
 531                 } server;
 532
 533                 struct smbXsrv_preauth preauth;
 534
 535                 struct smbd_smb2_request *requests;
 536         } smb2;
 537 };
 538
 539 const char *smbXsrv_connection_dbg(const struct smbXsrv_connection *xconn);
 540
 541 NTSTATUS smbXsrv_version_global_init(const struct server_id *server_id);
 542 uint32_t smbXsrv_version_global_current(void);
 543
 544 struct smbXsrv_client_table;
 545 NTSTATUS smbXsrv_client_global_init(void);
 546 NTSTATUS smbXsrv_client_create(TALLOC_CTX *mem_ctx,
 547                                struct tevent_context *ev_ctx,
 548                                struct messaging_context *msg_ctx,
 549                                NTTIME now,
 550                                struct smbXsrv_client **_client);
 551 NTSTATUS smbXsrv_client_update(struct smbXsrv_client *client);
 552 NTSTATUS smbXsrv_client_remove(struct smbXsrv_client *client);
 553 NTSTATUS smb2srv_client_lookup_global(struct smbXsrv_client *client,
 554                                       struct GUID client_guid,
 555                                       TALLOC_CTX *mem_ctx,
 556                                       struct smbXsrv_client_global0 **_pass);
 557 NTSTATUS smb2srv_client_connection_pass(struct smbd_smb2_request *smb2req,
 558                                         struct smbXsrv_client_global0 *global);
 559
 560 NTSTATUS smbXsrv_connection_init_tables(struct smbXsrv_connection *conn,
 561                                         enum protocol_types protocol);
 562
 563 NTSTATUS smbXsrv_session_global_init(struct messaging_context *msg_ctx);
 564 NTSTATUS smbXsrv_session_create(struct smbXsrv_connection *conn,
 565                                 NTTIME now,
 566                                 struct smbXsrv_session **_session);
 567 NTSTATUS smbXsrv_session_add_channel(struct smbXsrv_session *session,
 568                                      struct smbXsrv_connection *conn,
 569                                      struct smbXsrv_channel_global0 **_c);
 570 NTSTATUS smbXsrv_session_update(struct smbXsrv_session *session);
 571 struct smbXsrv_channel_global0;
 572 NTSTATUS smbXsrv_session_find_channel(const struct smbXsrv_session *session,
 573                                       const struct smbXsrv_connection *conn,
 574                                       struct smbXsrv_channel_global0 **_c);
 575 NTSTATUS smbXsrv_session_find_auth(const struct smbXsrv_session *session,
 576                                    const struct smbXsrv_connection *conn,
 577                                    NTTIME now,
 578                                    struct smbXsrv_session_auth0 **_a);
 579 NTSTATUS smbXsrv_session_create_auth(struct smbXsrv_session *session,
 580                                      struct smbXsrv_connection *conn,
 581                                      NTTIME now,
 582                                      uint8_t in_flags,
 583                                      uint8_t in_security_mode,
 584                                      struct smbXsrv_session_auth0 **_a);
 585 struct tevent_req *smb2srv_session_shutdown_send(TALLOC_CTX *mem_ctx,
 586                                         struct tevent_context *ev,
 587                                         struct smbXsrv_session *session,
 588                                         struct smbd_smb2_request *current_req);
 589 NTSTATUS smb2srv_session_shutdown_recv(struct tevent_req *req);
 590 NTSTATUS smbXsrv_session_logoff(struct smbXsrv_session *session);
 591 NTSTATUS smbXsrv_session_logoff_all(struct smbXsrv_connection *conn);
 592 NTSTATUS smb1srv_session_table_init(struct smbXsrv_connection *conn);
 593 NTSTATUS smb1srv_session_lookup(struct smbXsrv_connection *conn,
 594                                 uint16_t vuid, NTTIME now,
 595                                 struct smbXsrv_session **session);
 596 NTSTATUS smb2srv_session_table_init(struct smbXsrv_connection *conn);
 597 NTSTATUS smb2srv_session_lookup_conn(struct smbXsrv_connection *conn,
 598                                      uint64_t session_id, NTTIME now,
 599                                      struct smbXsrv_session **session);
 600 NTSTATUS smb2srv_session_lookup_client(struct smbXsrv_client *client,
 601                                        uint64_t session_id, NTTIME now,
 602                                        struct smbXsrv_session **session);
 603 struct smbXsrv_session_global0;
 604 NTSTATUS smbXsrv_session_global_traverse(
 605                         int (*fn)(struct smbXsrv_session_global0 *, void *),
 606                         void *private_data);
 607 struct tevent_req *smb2srv_session_close_previous_send(TALLOC_CTX *mem_ctx,
 608                                         struct tevent_context *ev,
 609                                         struct smbXsrv_connection *conn,
 610                                         struct auth_session_info *session_info,
 611                                         uint64_t previous_session_id,
 612                                         uint64_t current_session_id);
 613 NTSTATUS smb2srv_session_close_previous_recv(struct tevent_req *req);
 614
 615 NTSTATUS smbXsrv_tcon_global_init(void);
 616 NTSTATUS smbXsrv_tcon_update(struct smbXsrv_tcon *tcon);
 617 NTSTATUS smbXsrv_tcon_disconnect(struct smbXsrv_tcon *tcon, uint64_t vuid);
 618 NTSTATUS smb1srv_tcon_table_init(struct smbXsrv_connection *conn);
 619 NTSTATUS smb1srv_tcon_create(struct smbXsrv_connection *conn,
 620                              NTTIME now,
 621                              struct smbXsrv_tcon **_tcon);
 622 NTSTATUS smb1srv_tcon_lookup(struct smbXsrv_connection *conn,
 623                              uint16_t tree_id, NTTIME now,
 624                              struct smbXsrv_tcon **tcon);
 625 NTSTATUS smb1srv_tcon_disconnect_all(struct smbXsrv_connection *conn);
 626 NTSTATUS smb2srv_tcon_table_init(struct smbXsrv_session *session);
 627 NTSTATUS smb2srv_tcon_create(struct smbXsrv_session *session,
 628                              NTTIME now,
 629                              struct smbXsrv_tcon **_tcon);
 630 NTSTATUS smb2srv_tcon_lookup(struct smbXsrv_session *session,
 631                              uint32_t tree_id, NTTIME now,
 632                              struct smbXsrv_tcon **tcon);
 633 NTSTATUS smb2srv_tcon_disconnect_all(struct smbXsrv_session *session);
 634 struct smbXsrv_tcon_global0;
 635 NTSTATUS smbXsrv_tcon_global_traverse(
 636                         int (*fn)(struct smbXsrv_tcon_global0 *, void *),
 637                         void *private_data);
 638
 639 NTSTATUS smbXsrv_open_global_init(void);
 640 NTSTATUS smbXsrv_open_create(struct smbXsrv_connection *conn,
 641                              struct auth_session_info *session_info,
 642                              NTTIME now,
 643                              struct smbXsrv_open **_open);
 644 uint32_t smbXsrv_open_hash(struct smbXsrv_open *_open);
 645 NTSTATUS smbXsrv_open_update(struct smbXsrv_open *_open);
 646 NTSTATUS smbXsrv_open_close(struct smbXsrv_open *op, NTTIME now);
 647 NTSTATUS smb1srv_open_table_init(struct smbXsrv_connection *conn);
 648 NTSTATUS smb1srv_open_lookup(struct smbXsrv_connection *conn,
 649                              uint16_t fnum, NTTIME now,
 650                              struct smbXsrv_open **_open);
 651 NTSTATUS smb2srv_open_table_init(struct smbXsrv_connection *conn);
 652 NTSTATUS smb2srv_open_lookup(struct smbXsrv_connection *conn,
 653                              uint64_t persistent_id,
 654                              uint64_t volatile_id,
 655                              NTTIME now,
 656                              struct smbXsrv_open **_open);
 657 NTSTATUS smb2srv_open_lookup_replay_cache(struct smbXsrv_connection *conn,
 658                                           const struct GUID *create_guid,
 659                                           NTTIME now,
 660                                           struct smbXsrv_open **_open);
 661 NTSTATUS smb2srv_open_recreate(struct smbXsrv_connection *conn,
 662                                struct auth_session_info *session_info,
 663                                uint64_t persistent_id,
 664                                const struct GUID *create_guid,
 665                                NTTIME now,
 666                                struct smbXsrv_open **_open);
 667 struct smbXsrv_open_global0;
 668 NTSTATUS smbXsrv_open_global_traverse(
 669         int (*fn)(struct smbXsrv_open_global0 *, void *),
 670         void *private_data);
 671
 672 NTSTATUS smbXsrv_open_cleanup(uint64_t persistent_id);
 673 bool smbXsrv_is_encrypted(uint8_t encryption_flags);
 674 bool smbXsrv_is_partially_encrypted(uint8_t encryption_flags);
 675 bool smbXsrv_set_crypto_flag(uint8_t *flags, uint8_t flag);
 676 bool smbXsrv_is_signed(uint8_t signing_flags);
 677 bool smbXsrv_is_partially_signed(uint8_t signing_flags);
 678
 679 struct smbd_smb2_send_queue {
 680         struct smbd_smb2_send_queue *prev, *next;
 681
 682         DATA_BLOB *sendfile_header;
 683         NTSTATUS *sendfile_status;
 684         struct iovec *vector;
 685         int count;
 686
 687         struct {
 688                 struct tevent_req *req;
 689                 uint64_t last_byte;
 690         } ack;
 691
 692         TALLOC_CTX *mem_ctx;
 693 };
 694
 695 struct smbd_smb2_request {
 696         struct smbd_smb2_request *prev, *next;
 697
 698         struct smbd_server_connection *sconn;
 699         struct smbXsrv_connection *xconn;
 700
 701         struct smbd_smb2_send_queue queue_entry;
 702
 703         /* the session the request operates on, maybe NULL */
 704         struct smbXsrv_session *session;
 705         uint64_t last_session_id;
 706
 707         /* the tcon the request operates on, maybe NULL */
 708         struct smbXsrv_tcon *tcon;
 709         uint32_t last_tid;
 710
 711         /* the tevent_context (wrapper) the request operates on */
 712         struct tevent_context *ev_ctx;
 713
 714         int current_idx;
 715         bool do_signing;
 716         /* Was the request encrypted? */
 717         bool was_encrypted;
 718         /* Should we encrypt? */
 719         bool do_encryption;
 720         struct tevent_timer *async_te;
 721         bool compound_related;
 722
 723         /*
 724          * Give the implementation of an SMB2 req a way to tell the SMB2 request
 725          * processing engine that the internal request is going async, while
 726          * preserving synchronous SMB2 behaviour.
 727          */
 728         bool async_internal;
 729
 730         /*
 731          * the encryption key for the whole
 732          * compound chain
 733          */
 734         DATA_BLOB first_key;
 735         /*
 736          * the signing key for the last
 737          * request/response of a compound chain
 738          */
 739         DATA_BLOB last_key;
 740         struct smbXsrv_preauth *preauth;
 741
 742         struct timeval request_time;
 743
 744         SMBPROFILE_IOBYTES_ASYNC_STATE(profile);
 745
 746         /* fake smb1 request. */
 747         struct smb_request *smb1req;
 748         struct files_struct *compat_chain_fsp;
 749
 750         /*
 751          * Keep track of whether the outstanding request counters
 752          * had been updated in dispatch, so that they need to be
 753          * adapted again in reply.
 754          */
 755         bool request_counters_updated;
 756         uint64_t channel_generation;
 757
 758         /*
 759          * The sub request for async backend calls.
 760          * This is used for SMB2 Cancel.
 761          */
 762         struct tevent_req *subreq;
 763
 764 #define SMBD_SMB2_TF_IOV_OFS 0
 765 #define SMBD_SMB2_HDR_IOV_OFS 1
 766 #define SMBD_SMB2_BODY_IOV_OFS 2
 767 #define SMBD_SMB2_DYN_IOV_OFS 3
 768
 769 #define SMBD_SMB2_NUM_IOV_PER_REQ 4
 770
 771 #define SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,ofs) \
 772         (&req->dir.vector[(idx)+(ofs)])
 773
 774 #define SMBD_SMB2_IDX_TF_IOV(req,dir,idx) \
 775         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_TF_IOV_OFS)
 776 #define SMBD_SMB2_IDX_HDR_IOV(req,dir,idx) \
 777         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_HDR_IOV_OFS)
 778 #define SMBD_SMB2_IDX_BODY_IOV(req,dir,idx) \
 779         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_BODY_IOV_OFS)
 780 #define SMBD_SMB2_IDX_DYN_IOV(req,dir,idx) \
 781         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_DYN_IOV_OFS)
 782
 783 #define SMBD_SMB2_IN_TF_IOV(req)    SMBD_SMB2_IDX_TF_IOV(req,in,req->current_idx)
 784 #define SMBD_SMB2_IN_TF_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_TF_IOV(req)->iov_base)
 785 #define SMBD_SMB2_IN_HDR_IOV(req)    SMBD_SMB2_IDX_HDR_IOV(req,in,req->current_idx)
 786 #define SMBD_SMB2_IN_HDR_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_HDR_IOV(req)->iov_base)
 787 #define SMBD_SMB2_IN_BODY_IOV(req)   SMBD_SMB2_IDX_BODY_IOV(req,in,req->current_idx)
 788 #define SMBD_SMB2_IN_BODY_PTR(req)   (uint8_t *)(SMBD_SMB2_IN_BODY_IOV(req)->iov_base)
 789 #define SMBD_SMB2_IN_BODY_LEN(req)   (SMBD_SMB2_IN_BODY_IOV(req)->iov_len)
 790 #define SMBD_SMB2_IN_DYN_IOV(req)    SMBD_SMB2_IDX_DYN_IOV(req,in,req->current_idx)
 791 #define SMBD_SMB2_IN_DYN_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_DYN_IOV(req)->iov_base)
 792 #define SMBD_SMB2_IN_DYN_LEN(req)    (SMBD_SMB2_IN_DYN_IOV(req)->iov_len)
 793
 794 #define SMBD_SMB2_OUT_TF_IOV(req)   SMBD_SMB2_IDX_TF_IOV(req,out,req->current_idx)
 795 #define SMBD_SMB2_OUT_TF_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_TF_IOV(req)->iov_base)
 796 #define SMBD_SMB2_OUT_HDR_IOV(req)   SMBD_SMB2_IDX_HDR_IOV(req,out,req->current_idx)
 797 #define SMBD_SMB2_OUT_HDR_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_HDR_IOV(req)->iov_base)
 798 #define SMBD_SMB2_OUT_BODY_IOV(req)  SMBD_SMB2_IDX_BODY_IOV(req,out,req->current_idx)
 799 #define SMBD_SMB2_OUT_BODY_PTR(req)  (uint8_t *)(SMBD_SMB2_OUT_BODY_IOV(req)->iov_base)
 800 #define SMBD_SMB2_OUT_BODY_LEN(req)  (SMBD_SMB2_OUT_BODY_IOV(req)->iov_len)
 801 #define SMBD_SMB2_OUT_DYN_IOV(req)   SMBD_SMB2_IDX_DYN_IOV(req,out,req->current_idx)
 802 #define SMBD_SMB2_OUT_DYN_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_DYN_IOV(req)->iov_base)
 803 #define SMBD_SMB2_OUT_DYN_LEN(req)   (SMBD_SMB2_OUT_DYN_IOV(req)->iov_len)
 804
 805 #define SMBD_SMB2_SHORT_RECEIVEFILE_WRITE_LEN (SMB2_HDR_BODY + 0x30)
 806
 807         struct {
 808                 /*
 809                  * vector[0] TRANSPORT HEADER (empty)
 810                  * .
 811                  * vector[1] SMB2_TRANSFORM (optional)
 812                  * vector[2] SMB2
 813                  * vector[3] fixed body
 814                  * vector[4] dynamic body
 815                  * .
 816                  * .
 817                  * .
 818                  * vector[5] SMB2_TRANSFORM (optional)
 819                  * vector[6] SMB2
 820                  * vector[7] fixed body
 821                  * vector[8] dynamic body
 822                  * .
 823                  * .
 824                  * .
 825                  */
 826                 struct iovec *vector;
 827                 int vector_count;
 828                 struct iovec _vector[1 + SMBD_SMB2_NUM_IOV_PER_REQ];
 829         } in;
 830         struct {
 831                 /* the NBT header is not allocated */
 832                 uint8_t nbt_hdr[4];
 833                 /*
 834                  * vector[0] TRANSPORT HEADER
 835                  * .
 836                  * vector[1] SMB2_TRANSFORM (optional)
 837                  * vector[2] SMB2
 838                  * vector[3] fixed body
 839                  * vector[4] dynamic body
 840                  * .
 841                  * .
 842                  * .
 843                  * vector[5] SMB2_TRANSFORM (empty)
 844                  * vector[6] SMB2
 845                  * vector[7] fixed body
 846                  * vector[8] dynamic body
 847                  * .
 848                  * .
 849                  * .
 850                  */
 851                 struct iovec *vector;
 852                 int vector_count;
 853                 struct iovec _vector[1 + SMBD_SMB2_NUM_IOV_PER_REQ];
 854 #define OUTVEC_ALLOC_SIZE (SMB2_HDR_BODY + 9)
 855                 uint8_t _hdr[OUTVEC_ALLOC_SIZE];
 856                 uint8_t _body[0x58];
 857         } out;
 858 };
 859
 860 struct smbd_server_connection;
 861 struct user_struct;
 862
 863 struct pending_message_list;
 864 struct pending_auth_data;
 865
 866 struct user_struct {
 867         struct user_struct *next, *prev;
 868         uint64_t vuid; /* Tag for this entry. */
 869
 870         char *session_keystr; /* used by utmp and pam session code.
 871                                  TDB key string */
 872         int homes_snum;
 873
 874         struct auth_session_info *session_info;
 875
 876         struct smbXsrv_session *session;
 877 };
 878
 879 struct pthreadpool_tevent;
 880
 881 struct smbd_server_connection {
 882         const struct tsocket_address *local_address;
 883         const struct tsocket_address *remote_address;
 884         const char *remote_hostname;
 885         struct tevent_context *raw_ev_ctx;
 886         struct tevent_context *root_ev_ctx;
 887         struct tevent_context *guest_ev_ctx;
 888         struct messaging_context *msg_ctx;
 889         struct notify_context *notify_ctx;
 890         bool using_smb2;
 891         bool aapl_zero_file_id; /* Apple-specific */
 892         int trans_num;
 893
 894         size_t num_users;
 895         struct user_struct *users;
 896
 897         size_t num_connections;
 898         struct connection_struct *connections;
 899
 900         size_t num_files;
 901         struct files_struct *files;
 902
 903         int real_max_open_files;
 904         struct fsp_singleton_cache fsp_fi_cache;
 905
 906         struct pending_message_list *deferred_open_queue;
 907
 908
 909         /* open directory handles. */
 910         struct {
 911                 struct bitmap *dptr_bmap;
 912                 struct dptr_struct *dirptrs;
 913                 int dirhandles_open;
 914         } searches;
 915
 916         uint64_t num_requests;
 917
 918         /* Current number of oplocks we have outstanding. */
 919         struct {
 920                 int32_t exclusive_open;
 921                 int32_t level_II_open;
 922                 struct kernel_oplocks *kernel_ops;
 923         } oplocks;
 924
 925         struct {
 926                 struct notify_mid_map *notify_mid_maps;
 927
 928                 struct {
 929                         /* dlink list we store pending lock records on. */
 930                         struct blocking_lock_record *blocking_lock_queue;
 931                         /* dlink list we move cancelled lock records onto. */
 932                         struct blocking_lock_record *blocking_lock_cancelled_queue;
 933
 934                         /* The event that makes us process our blocking lock queue */
 935                         struct tevent_timer *brl_timeout;
 936
 937                         bool blocking_lock_unlock_state;
 938                         bool blocking_lock_cancel_state;
 939                 } locks;
 940         } smb1;
 941         struct {
 942                 struct {
 943                         /* The event that makes us process our blocking lock queue */
 944                         struct tevent_timer *brl_timeout;
 945                         bool blocking_lock_unlock_state;
 946                 } locks;
 947         } smb2;
 948
 949         struct pthreadpool_tevent *pool;
 950
 951         struct smbXsrv_client *client;
 952 };
 953
 954 extern struct smbXsrv_client *global_smbXsrv_client;
 955
 956 void smbd_init_globals(void);