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 #ifndef _SOURCE3_SMBD_GLOBALS_H_
  22 #define _SOURCE3_SMBD_GLOBALS_H_
  23
  24 #include "system/select.h"
  25 #include "librpc/gen_ndr/smbXsrv.h"
  26 #include "smbprofile.h"
  27
  28 #ifdef USE_DMAPI
  29 struct smbd_dmapi_context;
  30 extern struct smbd_dmapi_context *dmapi_ctx;
  31 #endif
  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 uint32_t global_client_caps;
  83
  84 extern uint16_t fnf_handle;
  85
  86 struct conn_ctx {
  87         connection_struct *conn;
  88         uint64_t vuid;
  89         userdom_struct user_info;
  90 };
  91 /* A stack of current_user connection contexts. */
  92 extern struct conn_ctx conn_ctx_stack[MAX_SEC_CTX_DEPTH];
  93 extern int conn_ctx_stack_ndx;
  94
  95 struct vfs_init_function_entry;
  96 extern struct vfs_init_function_entry *backends;
  97 extern char *sparse_buf;
  98 extern char *LastDir;
  99
 100 struct smbd_parent_context;
 101 extern struct smbd_parent_context *am_parent;
 102 extern struct memcache *smbd_memcache_ctx;
 103 extern bool exit_firsttime;
 104
 105 struct tstream_context;
 106 struct smbd_smb2_request;
 107
 108 DATA_BLOB negprot_spnego(TALLOC_CTX *ctx, struct smbXsrv_connection *xconn);
 109
 110 void smbd_lock_socket(struct smbXsrv_connection *xconn);
 111 void smbd_unlock_socket(struct smbXsrv_connection *xconn);
 112
 113 struct GUID smbd_request_guid(struct smb_request *smb1req, uint16_t idx);
 114
 115 NTSTATUS smbd_do_unlocking(struct smb_request *req,
 116                            files_struct *fsp,
 117                            uint16_t num_ulocks,
 118                            struct smbd_lock_element *ulocks);
 119
 120 NTSTATUS smbd_do_qfilepathinfo(connection_struct *conn,
 121                                TALLOC_CTX *mem_ctx,
 122                                struct smb_request *req,
 123                                uint16_t info_level,
 124                                files_struct *fsp,
 125                                struct smb_filename *smb_fname,
 126                                bool delete_pending,
 127                                struct timespec write_time_ts,
 128                                struct ea_list *ea_list,
 129                                uint16_t flags2,
 130                                unsigned int max_data_bytes,
 131                                size_t *fixed_portion,
 132                                char **ppdata,
 133                                unsigned int *pdata_size);
 134
 135 NTSTATUS smbd_do_setfsinfo(connection_struct *conn,
 136                                 struct smb_request *req,
 137                                 TALLOC_CTX *mem_ctx,
 138                                 uint16_t info_level,
 139                                 files_struct *fsp,
 140                                 const DATA_BLOB *pdata);
 141
 142 NTSTATUS smbd_do_setfilepathinfo(connection_struct *conn,
 143                                 struct smb_request *req,
 144                                 TALLOC_CTX *mem_ctx,
 145                                 uint16_t info_level,
 146                                 files_struct *fsp,
 147                                 struct share_mode_lock **lck,
 148                                 struct smb_filename *smb_fname,
 149                                 char *data,
 150                                 int total_data,
 151                                 int *ret_data_size);
 152
 153 NTSTATUS smbd_do_qfsinfo(struct smbXsrv_connection *xconn,
 154                          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 files_struct *fsp,
 161                          struct smb_filename *smb_fname,
 162                          char **ppdata,
 163                          int *ret_data_len);
 164
 165 NTSTATUS smbd_dirptr_lanman2_entry(TALLOC_CTX *ctx,
 166                                connection_struct *conn,
 167                                struct dptr_struct *dirptr,
 168                                uint16_t flags2,
 169                                const char *path_mask,
 170                                uint32_t dirtype,
 171                                int info_level,
 172                                int requires_resume_key,
 173                                bool dont_descend,
 174                                bool ask_sharemode,
 175                                bool get_dosmode,
 176                                uint8_t align,
 177                                bool do_pad,
 178                                char **ppdata,
 179                                char *base_data,
 180                                char *end_data,
 181                                int space_remaining,
 182                                struct smb_filename **smb_fname,
 183                                int *_last_entry_off,
 184                                struct ea_list *name_list,
 185                                struct file_id *file_id);
 186
 187 NTSTATUS smbd_calculate_access_mask_fsp(struct files_struct *dirsfp,
 188                         struct files_struct *fsp,
 189                         bool use_privs,
 190                         uint32_t access_mask,
 191                         uint32_t *access_mask_out);
 192
 193 void smbd_notify_cancel_by_smbreq(const struct smb_request *smbreq);
 194
 195 void smbXsrv_connection_disconnect_transport(struct smbXsrv_connection *xconn,
 196                                              NTSTATUS status);
 197 size_t smbXsrv_client_valid_connections(struct smbXsrv_client *client);
 198 void smbd_server_connection_terminate_ex(struct smbXsrv_connection *xconn,
 199                                          const char *reason,
 200                                          const char *location);
 201 #define smbd_server_connection_terminate(xconn, reason) \
 202         smbd_server_connection_terminate_ex(xconn, reason, __location__)
 203
 204 void smbd_server_disconnect_client_ex(struct smbXsrv_client *client,
 205                                       const char *reason,
 206                                       const char *location);
 207 #define smbd_server_disconnect_client(__client, __reason) \
 208         smbd_server_disconnect_client_ex(__client, __reason, __location__)
 209
 210 const char *smb2_opcode_name(uint16_t opcode);
 211 bool smbd_is_smb2_header(const uint8_t *inbuf, size_t size);
 212 bool smbd_smb2_is_compound(const struct smbd_smb2_request *req);
 213 bool smbd_smb2_is_last_in_compound(const struct smbd_smb2_request *req);
 214
 215 NTSTATUS smbd_add_connection(struct smbXsrv_client *client, int sock_fd,
 216                              NTTIME now, struct smbXsrv_connection **_xconn);
 217
 218 NTSTATUS reply_smb2002(struct smb_request *req, uint16_t choice);
 219 NTSTATUS reply_smb20ff(struct smb_request *req, uint16_t choice);
 220 NTSTATUS smbd_smb2_process_negprot(struct smbXsrv_connection *xconn,
 221                                uint64_t expected_seq_low,
 222                                const uint8_t *inpdu, size_t size);
 223 NTSTATUS smb2_multi_protocol_reply_negprot(struct smb_request *req);
 224
 225 DATA_BLOB smbd_smb2_generate_outbody(struct smbd_smb2_request *req, size_t size);
 226
 227 bool smbXsrv_server_multi_channel_enabled(void);
 228
 229 NTSTATUS smbd_smb2_request_error_ex(struct smbd_smb2_request *req,
 230                                     NTSTATUS status,
 231                                     uint8_t error_context_count,
 232                                     DATA_BLOB *info,
 233                                     const char *location);
 234 #define smbd_smb2_request_error(req, status) \
 235         smbd_smb2_request_error_ex(req, status, 0, 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 smbXsrv_client *client,
 244                                      struct smbXsrv_open *op,
 245                                      uint8_t oplock_level);
 246 NTSTATUS smbd_smb2_send_lease_break(struct smbXsrv_client *client,
 247                                     uint16_t new_epoch,
 248                                     uint32_t lease_flags,
 249                                     struct smb2_lease_key *lease_key,
 250                                     uint32_t current_lease_state,
 251                                     uint32_t new_lease_state);
 252
 253 NTSTATUS smbd_smb2_request_pending_queue(struct smbd_smb2_request *req,
 254                                          struct tevent_req *subreq,
 255                                          uint32_t defer_time);
 256
 257 struct smb_request *smbd_smb2_fake_smb_request(struct smbd_smb2_request *req,
 258                                                struct files_struct *fsp);
 259 size_t smbd_smb2_unread_bytes(struct smbd_smb2_request *req);
 260 void remove_smb2_chained_fsp(files_struct *fsp);
 261
 262 NTSTATUS smbd_smb2_request_verify_creditcharge(struct smbd_smb2_request *req,
 263                                                uint32_t data_length);
 264
 265 NTSTATUS smbd_smb2_request_verify_sizes(struct smbd_smb2_request *req,
 266                                         size_t expected_body_size);
 267
 268 void smb2_request_set_async_internal(struct smbd_smb2_request *req,
 269                                      bool async_internal);
 270
 271 enum protocol_types smbd_smb2_protocol_dialect_match(const uint8_t *indyn,
 272                                                      const int dialect_count,
 273                                                      uint16_t *dialect);
 274 NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req);
 275 NTSTATUS smbd_smb2_request_process_sesssetup(struct smbd_smb2_request *req);
 276 NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req);
 277 NTSTATUS smbd_smb2_request_process_tcon(struct smbd_smb2_request *req);
 278 NTSTATUS smbd_smb2_request_process_tdis(struct smbd_smb2_request *req);
 279 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req);
 280 NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req);
 281 NTSTATUS smbd_smb2_request_process_flush(struct smbd_smb2_request *req);
 282 NTSTATUS smbd_smb2_request_process_read(struct smbd_smb2_request *req);
 283 NTSTATUS smb2_read_complete(struct tevent_req *req, ssize_t nread, int err);
 284 NTSTATUS smbd_smb2_request_process_write(struct smbd_smb2_request *req);
 285 NTSTATUS smb2_write_complete(struct tevent_req *req, ssize_t nwritten, int err);
 286 NTSTATUS smb2_write_complete_nosync(struct tevent_req *req, ssize_t nwritten,
 287                                     int err);
 288 NTSTATUS smbd_smb2_request_process_lock(struct smbd_smb2_request *req);
 289 NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req);
 290 NTSTATUS smbd_smb2_request_process_keepalive(struct smbd_smb2_request *req);
 291 NTSTATUS smbd_smb2_request_process_query_directory(struct smbd_smb2_request *req);
 292 NTSTATUS smbd_smb2_request_process_notify(struct smbd_smb2_request *req);
 293 NTSTATUS smbd_smb2_request_process_getinfo(struct smbd_smb2_request *req);
 294 NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req);
 295 NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req);
 296 NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req);
 297 void smbd_smb2_request_dispatch_immediate(struct tevent_context *ctx,
 298                                 struct tevent_immediate *im,
 299                                 void *private_data);
 300
 301 struct deferred_open_record;
 302
 303 /* SMB1 -> SMB2 glue. */
 304 void send_break_message_smb2(files_struct *fsp,
 305                              uint32_t break_from,
 306                              uint32_t break_to);
 307 /* From smbd/smb2_create.c */
 308 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level);
 309 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
 310                         struct timeval *p_request_time,
 311                         struct deferred_open_record **open_rec);
 312 bool open_was_deferred_smb2(
 313         struct smbXsrv_connection *xconn, uint64_t mid);
 314 void remove_deferred_open_message_smb2(
 315         struct smbXsrv_connection *xconn, uint64_t mid);
 316 bool schedule_deferred_open_message_smb2(
 317         struct smbXsrv_connection *xconn, uint64_t mid);
 318 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
 319                                 struct timeval request_time,
 320                                 struct timeval timeout,
 321                                 struct file_id id,
 322                                 struct deferred_open_record *open_rec);
 323
 324 struct smbXsrv_client;
 325
 326 struct smbXsrv_preauth {
 327         uint8_t sha512_value[64];
 328 };
 329
 330 struct smbXsrv_connection {
 331         struct smbXsrv_connection *prev, *next;
 332
 333         struct smbXsrv_client *client;
 334
 335         NTTIME connect_time;
 336         uint64_t channel_id;
 337         const struct tsocket_address *local_address;
 338         const struct tsocket_address *remote_address;
 339         const char *remote_hostname;
 340         bool has_cluster_movable_ip;
 341
 342         enum protocol_types protocol;
 343
 344         struct {
 345                 NTSTATUS status;
 346                 bool terminating;
 347                 struct tevent_queue *shutdown_wait_queue;
 348                 int sock;
 349                 struct tevent_fd *fde;
 350
 351                 struct {
 352                         bool got_session;
 353                 } nbt;
 354         } transport;
 355
 356         struct {
 357                 bool force_unacked_timeout;
 358                 uint64_t unacked_bytes;
 359                 uint32_t rto_usecs;
 360                 struct tevent_req *checker_subreq;
 361                 struct smbd_smb2_send_queue *queue;
 362         } ack;
 363
 364 #if defined(WITH_SMB1SERVER)
 365         struct {
 366                 struct {
 367                         /*
 368                          * fd for the fcntl lock and process shared
 369                          * robust mutex to coordinate access to the
 370                          * client socket. When the system supports
 371                          * process shared robust mutexes, those are
 372                          * used. If not, then the fcntl lock will be
 373                          * used.
 374                          */
 375                         int socket_lock_fd;
 376 #ifdef HAVE_ROBUST_MUTEXES
 377                         pthread_mutex_t *socket_mutex;
 378 #endif
 379
 380                         /*
 381                          * fd for the trusted pipe from
 382                          * echo handler child
 383                          */
 384                         int trusted_fd;
 385
 386                         /*
 387                          * fde for the trusted_fd
 388                          */
 389                         struct tevent_fd *trusted_fde;
 390
 391                         /*
 392                          * Reference count for the fcntl lock to
 393                          * allow recursive locks.
 394                          */
 395                         int ref_count;
 396                 } echo_handler;
 397
 398                 struct {
 399                         bool encrypted_passwords;
 400                         bool spnego;
 401                         struct auth4_context *auth_context;
 402                         bool done;
 403                         /*
 404                          * Size of the data we can receive. Set by us.
 405                          * Can be modified by the max xmit parameter.
 406                          */
 407                         int max_recv;
 408                 } negprot;
 409
 410                 struct {
 411                         bool done_sesssetup;
 412                         /*
 413                          * Size of data we can send to client. Set
 414                          *  by the client for all protocols above CORE.
 415                          *  Set by us for CORE protocol.
 416                          */
 417                         int max_send;
 418                 } sessions;
 419                 struct smb1_signing_state *signing_state;
 420
 421                 struct {
 422                         uint16_t client_major;
 423                         uint16_t client_minor;
 424                         uint32_t client_cap_low;
 425                         uint32_t client_cap_high;
 426                 } unix_info;
 427
 428                 struct msg_state *msg_state;
 429         } smb1;
 430 #endif
 431         struct {
 432                 struct smbd_smb2_request_read_state {
 433                         struct smbd_smb2_request *req;
 434                         struct {
 435                                 uint8_t nbt[NBT_HDR_SIZE];
 436                         } hdr;
 437                         struct iovec _vector[1];
 438                         struct iovec *vector;
 439                         int count;
 440                         struct msghdr msg;
 441                         bool doing_receivefile;
 442                         size_t min_recv_size;
 443                         size_t pktfull;
 444                         size_t pktlen;
 445                         uint8_t *pktbuf;
 446                 } request_read_state;
 447                 struct smbd_smb2_send_queue *send_queue;
 448                 size_t send_queue_len;
 449
 450                 struct {
 451                         /*
 452                          * seq_low is the lowest sequence number
 453                          * we will accept.
 454                          */
 455                         uint64_t seq_low;
 456                         /*
 457                          * seq_range is the range of credits we have
 458                          * granted from the sequence windows starting
 459                          * at seq_low.
 460                          *
 461                          * This gets incremented when new credits are
 462                          * granted and gets decremented when the
 463                          * lowest sequence number is consumed
 464                          * (when seq_low gets incremented).
 465                          */
 466                         uint16_t seq_range;
 467                         /*
 468                          * The number of credits we have currently granted
 469                          * to the client.
 470                          *
 471                          * This gets incremented when new credits are
 472                          * granted and gets decremented when any credit
 473                          * is consumed.
 474                          *
 475                          * Note: the decrementing is different compared
 476                          *       to seq_range.
 477                          */
 478                         uint16_t granted;
 479                         /*
 480                          * The maximum number of credits we will ever
 481                          * grant to the client.
 482                          *
 483                          * Typically we will only grant 1/16th of
 484                          * max_credits.
 485                          *
 486                          * This is the "server max credits" parameter.
 487                          */
 488                         uint16_t max;
 489                         /*
 490                          * a bitmap of size max_credits
 491                          */
 492                         struct bitmap *bitmap;
 493                         bool multicredit;
 494                 } credits;
 495
 496                 bool allow_2ff;
 497                 struct {
 498                         uint32_t capabilities;
 499                         struct GUID guid;
 500                         bool guid_verified;
 501                         uint16_t security_mode;
 502                         uint16_t num_dialects;
 503                         uint16_t *dialects;
 504                 } client;
 505                 struct {
 506                         uint32_t capabilities;
 507                         struct GUID guid;
 508                         uint16_t security_mode;
 509                         uint16_t dialect;
 510                         uint32_t max_trans;
 511                         uint32_t max_read;
 512                         uint32_t max_write;
 513                         uint16_t sign_algo;
 514                         uint16_t cipher;
 515                         bool posix_extensions_negotiated;
 516                 } server;
 517
 518                 struct smbXsrv_preauth preauth;
 519
 520                 struct smbd_smb2_request *requests;
 521
 522                 struct {
 523                         uint8_t read_body_padding;
 524                 } smbtorture;
 525
 526                 bool signing_mandatory;
 527                 /*
 528                  * This is ConstrainedConnection in MS-SMB2,
 529                  * but with reversed value...
 530                  */
 531                 bool got_authenticated_session;
 532         } smb2;
 533 };
 534
 535 const char *smbXsrv_connection_dbg(const struct smbXsrv_connection *xconn);
 536
 537 NTSTATUS smbXsrv_version_global_init(const struct server_id *server_id);
 538 uint32_t smbXsrv_version_global_current(void);
 539
 540 struct smbXsrv_client_table;
 541 NTSTATUS smbXsrv_client_global_init(void);
 542 NTSTATUS smbXsrv_client_create(TALLOC_CTX *mem_ctx,
 543                                struct tevent_context *ev_ctx,
 544                                struct messaging_context *msg_ctx,
 545                                NTTIME now,
 546                                struct smbXsrv_client **_client);
 547 NTSTATUS smbXsrv_client_remove(struct smbXsrv_client *client);
 548 struct tevent_req *smb2srv_client_mc_negprot_send(TALLOC_CTX *mem_ctx,
 549                                                   struct tevent_context *ev,
 550                                                   struct smbd_smb2_request *smb2req);
 551 NTSTATUS smb2srv_client_mc_negprot_recv(struct tevent_req *req);
 552
 553 NTSTATUS smbXsrv_connection_init_tables(struct smbXsrv_connection *conn,
 554                                         enum protocol_types protocol);
 555
 556 NTSTATUS smbXsrv_tcon_global_init(void);
 557 NTSTATUS smbXsrv_tcon_update(struct smbXsrv_tcon *tcon);
 558 NTSTATUS smbXsrv_tcon_disconnect(struct smbXsrv_tcon *tcon, uint64_t vuid);
 559 NTSTATUS smb1srv_tcon_table_init(struct smbXsrv_connection *conn);
 560 NTSTATUS smb1srv_tcon_create(struct smbXsrv_connection *conn,
 561                              uint32_t session_global_id,
 562                              const char *share_name,
 563                              NTTIME now,
 564                              struct smbXsrv_tcon **_tcon);
 565 NTSTATUS smb1srv_tcon_lookup(struct smbXsrv_connection *conn,
 566                              uint16_t tree_id, NTTIME now,
 567                              struct smbXsrv_tcon **tcon);
 568 NTSTATUS smb1srv_tcon_disconnect_all(struct smbXsrv_client *client);
 569 NTSTATUS smb2srv_tcon_table_init(struct smbXsrv_session *session);
 570 NTSTATUS smb2srv_tcon_create(struct smbXsrv_session *session,
 571                              uint32_t session_global_id,
 572                              uint8_t encryption_flags,
 573                              const char *share_name,
 574                              NTTIME now,
 575                              struct smbXsrv_tcon **_tcon);
 576 NTSTATUS smb2srv_tcon_lookup(struct smbXsrv_session *session,
 577                              uint32_t tree_id, NTTIME now,
 578                              struct smbXsrv_tcon **tcon);
 579 NTSTATUS smb2srv_tcon_disconnect_all(struct smbXsrv_session *session);
 580 struct smbXsrv_tcon_global0;
 581 NTSTATUS smbXsrv_tcon_global_traverse(
 582                         int (*fn)(struct smbXsrv_tcon_global0 *, void *),
 583                         void *private_data);
 584
 585
 586 bool smbXsrv_is_encrypted(uint8_t encryption_flags);
 587 bool smbXsrv_is_partially_encrypted(uint8_t encryption_flags);
 588 bool smbXsrv_set_crypto_flag(uint8_t *flags, uint8_t flag);
 589 bool smbXsrv_is_signed(uint8_t signing_flags);
 590 bool smbXsrv_is_partially_signed(uint8_t signing_flags);
 591
 592 struct smbd_smb2_send_queue {
 593         struct smbd_smb2_send_queue *prev, *next;
 594
 595         DATA_BLOB *sendfile_header;
 596         uint32_t sendfile_body_size;
 597         NTSTATUS *sendfile_status;
 598
 599         struct msghdr msg;
 600         struct iovec *vector;
 601         int count;
 602
 603         struct {
 604                 struct tevent_req *req;
 605                 struct timeval timeout;
 606                 uint64_t required_acked_bytes;
 607         } ack;
 608
 609         TALLOC_CTX *mem_ctx;
 610 };
 611
 612 struct smbd_smb2_request {
 613         struct smbd_smb2_request *prev, *next;
 614
 615         struct smbd_server_connection *sconn;
 616         struct smbXsrv_connection *xconn;
 617
 618         struct smbd_smb2_send_queue queue_entry;
 619
 620         /* the session the request operates on, maybe NULL */
 621         struct smbXsrv_session *session;
 622         uint64_t last_session_id;
 623
 624         /* the tcon the request operates on, maybe NULL */
 625         struct smbXsrv_tcon *tcon;
 626         uint32_t last_tid;
 627
 628         int current_idx;
 629         bool do_signing;
 630         /* Was the request encrypted? */
 631         bool was_encrypted;
 632         /* Should we encrypt? */
 633         bool do_encryption;
 634         struct tevent_timer *async_te;
 635         bool compound_related;
 636         NTSTATUS compound_create_err;
 637
 638         /*
 639          * Give the implementation of an SMB2 req a way to tell the SMB2 request
 640          * processing engine that the internal request is going async, while
 641          * preserving synchronous SMB2 behaviour.
 642          */
 643         bool async_internal;
 644
 645         /*
 646          * the encryption key for the whole
 647          * compound chain
 648          */
 649         struct smb2_signing_key *first_enc_key;
 650         /*
 651          * the signing key for the last
 652          * request/response of a compound chain
 653          */
 654         struct smb2_signing_key *last_sign_key;
 655         struct smbXsrv_preauth *preauth;
 656
 657         struct timeval request_time;
 658
 659         SMBPROFILE_IOBYTES_ASYNC_STATE(profile);
 660
 661         /* fake smb1 request. */
 662         struct smb_request *smb1req;
 663         struct files_struct *compat_chain_fsp;
 664
 665         /*
 666          * Keep track of whether the outstanding request counters
 667          * had been updated in dispatch, so that they need to be
 668          * adapted again in reply.
 669          */
 670         bool request_counters_updated;
 671         uint64_t channel_generation;
 672
 673         /*
 674          * The sub request for async backend calls.
 675          * This is used for SMB2 Cancel.
 676          */
 677         struct tevent_req *subreq;
 678
 679 #define SMBD_SMB2_TF_IOV_OFS 0
 680 #define SMBD_SMB2_HDR_IOV_OFS 1
 681 #define SMBD_SMB2_BODY_IOV_OFS 2
 682 #define SMBD_SMB2_DYN_IOV_OFS 3
 683
 684 #define SMBD_SMB2_NUM_IOV_PER_REQ 4
 685
 686 #define SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,ofs) \
 687         (&req->dir.vector[(idx)+(ofs)])
 688
 689 #define SMBD_SMB2_IDX_TF_IOV(req,dir,idx) \
 690         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_TF_IOV_OFS)
 691 #define SMBD_SMB2_IDX_HDR_IOV(req,dir,idx) \
 692         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_HDR_IOV_OFS)
 693 #define SMBD_SMB2_IDX_BODY_IOV(req,dir,idx) \
 694         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_BODY_IOV_OFS)
 695 #define SMBD_SMB2_IDX_DYN_IOV(req,dir,idx) \
 696         SMBD_SMB2_IOV_IDX_OFS(req,dir,idx,SMBD_SMB2_DYN_IOV_OFS)
 697
 698 #define SMBD_SMB2_IN_TF_IOV(req)    SMBD_SMB2_IDX_TF_IOV(req,in,req->current_idx)
 699 #define SMBD_SMB2_IN_TF_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_TF_IOV(req)->iov_base)
 700 #define SMBD_SMB2_IN_HDR_IOV(req)    SMBD_SMB2_IDX_HDR_IOV(req,in,req->current_idx)
 701 #define SMBD_SMB2_IN_HDR_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_HDR_IOV(req)->iov_base)
 702 #define SMBD_SMB2_IN_BODY_IOV(req)   SMBD_SMB2_IDX_BODY_IOV(req,in,req->current_idx)
 703 #define SMBD_SMB2_IN_BODY_PTR(req)   (uint8_t *)(SMBD_SMB2_IN_BODY_IOV(req)->iov_base)
 704 #define SMBD_SMB2_IN_BODY_LEN(req)   (SMBD_SMB2_IN_BODY_IOV(req)->iov_len)
 705 #define SMBD_SMB2_IN_DYN_IOV(req)    SMBD_SMB2_IDX_DYN_IOV(req,in,req->current_idx)
 706 #define SMBD_SMB2_IN_DYN_PTR(req)    (uint8_t *)(SMBD_SMB2_IN_DYN_IOV(req)->iov_base)
 707 #define SMBD_SMB2_IN_DYN_LEN(req)    (SMBD_SMB2_IN_DYN_IOV(req)->iov_len)
 708
 709 #define SMBD_SMB2_OUT_TF_IOV(req)   SMBD_SMB2_IDX_TF_IOV(req,out,req->current_idx)
 710 #define SMBD_SMB2_OUT_TF_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_TF_IOV(req)->iov_base)
 711 #define SMBD_SMB2_OUT_HDR_IOV(req)   SMBD_SMB2_IDX_HDR_IOV(req,out,req->current_idx)
 712 #define SMBD_SMB2_OUT_HDR_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_HDR_IOV(req)->iov_base)
 713 #define SMBD_SMB2_OUT_BODY_IOV(req)  SMBD_SMB2_IDX_BODY_IOV(req,out,req->current_idx)
 714 #define SMBD_SMB2_OUT_BODY_PTR(req)  (uint8_t *)(SMBD_SMB2_OUT_BODY_IOV(req)->iov_base)
 715 #define SMBD_SMB2_OUT_BODY_LEN(req)  (SMBD_SMB2_OUT_BODY_IOV(req)->iov_len)
 716 #define SMBD_SMB2_OUT_DYN_IOV(req)   SMBD_SMB2_IDX_DYN_IOV(req,out,req->current_idx)
 717 #define SMBD_SMB2_OUT_DYN_PTR(req)   (uint8_t *)(SMBD_SMB2_OUT_DYN_IOV(req)->iov_base)
 718 #define SMBD_SMB2_OUT_DYN_LEN(req)   (SMBD_SMB2_OUT_DYN_IOV(req)->iov_len)
 719
 720 #define SMBD_SMB2_SHORT_RECEIVEFILE_WRITE_LEN (SMB2_HDR_BODY + 0x30)
 721
 722         struct {
 723                 /*
 724                  * vector[0] TRANSPORT HEADER (empty)
 725                  * .
 726                  * vector[1] SMB2_TRANSFORM (optional)
 727                  * vector[2] SMB2
 728                  * vector[3] fixed body
 729                  * vector[4] dynamic body
 730                  * .
 731                  * .
 732                  * .
 733                  * vector[5] SMB2_TRANSFORM (optional)
 734                  * vector[6] SMB2
 735                  * vector[7] fixed body
 736                  * vector[8] dynamic body
 737                  * .
 738                  * .
 739                  * .
 740                  */
 741                 struct iovec *vector;
 742                 int vector_count;
 743                 struct iovec _vector[1 + SMBD_SMB2_NUM_IOV_PER_REQ];
 744         } in;
 745         struct {
 746                 /* the NBT header is not allocated */
 747                 uint8_t nbt_hdr[4];
 748                 /*
 749                  * vector[0] TRANSPORT HEADER
 750                  * .
 751                  * vector[1] SMB2_TRANSFORM (optional)
 752                  * vector[2] SMB2
 753                  * vector[3] fixed body
 754                  * vector[4] dynamic body
 755                  * .
 756                  * .
 757                  * .
 758                  * vector[5] SMB2_TRANSFORM (empty)
 759                  * vector[6] SMB2
 760                  * vector[7] fixed body
 761                  * vector[8] dynamic body
 762                  * .
 763                  * .
 764                  * .
 765                  */
 766                 struct iovec *vector;
 767                 int vector_count;
 768                 struct iovec _vector[1 + SMBD_SMB2_NUM_IOV_PER_REQ];
 769 #define OUTVEC_ALLOC_SIZE (SMB2_HDR_BODY + 9)
 770                 uint8_t _hdr[OUTVEC_ALLOC_SIZE];
 771                 uint8_t _body[0x58];
 772         } out;
 773 };
 774
 775 struct smbd_server_connection;
 776
 777 struct pending_message_list;
 778 struct pending_auth_data;
 779
 780 struct pthreadpool_tevent;
 781 struct dcesrv_context;
 782
 783 struct smbd_server_connection {
 784         const struct tsocket_address *local_address;
 785         const struct tsocket_address *remote_address;
 786         const char *remote_hostname;
 787         struct tevent_context *ev_ctx;
 788         struct messaging_context *msg_ctx;
 789         struct dcesrv_context *dce_ctx;
 790         struct notify_context *notify_ctx;
 791         int trans_num;
 792
 793         size_t num_users;
 794
 795         size_t num_connections;
 796         struct connection_struct *connections;
 797
 798         size_t num_files;
 799         struct files_struct *files;
 800
 801         int real_max_open_files;
 802         struct fsp_singleton_cache fsp_fi_cache;
 803
 804         struct pending_message_list *deferred_open_queue;
 805
 806
 807         /* open directory handles. */
 808         struct {
 809                 struct bitmap *dptr_bmap;
 810                 struct dptr_struct *dirptrs;
 811         } searches;
 812
 813         uint64_t num_requests;
 814
 815         /* Current number of oplocks we have outstanding. */
 816         struct {
 817                 int32_t exclusive_open;
 818                 int32_t level_II_open;
 819                 struct kernel_oplocks *kernel_ops;
 820         } oplocks;
 821
 822         struct notify_mid_map *notify_mid_maps;
 823
 824         struct pthreadpool_tevent *pool;
 825
 826         struct smbXsrv_client *client;
 827 };
 828
 829 extern struct smbXsrv_client *global_smbXsrv_client;
 830
 831 void smbd_init_globals(void);
 832
 833 /****************************************************************************
 834  The buffer we keep around whilst an aio request is in process.
 835 *****************************************************************************/
 836
 837 struct aio_extra {
 838         files_struct *fsp;
 839         struct smb_request *smbreq;
 840         DATA_BLOB outbuf;
 841         struct lock_struct lock;
 842         size_t nbyte;
 843         off_t offset;
 844         bool write_through;
 845 };
 846
 847 #define SMBD_TMPNAME_PREFIX ".::TMPNAME:"
 848 #define SMBD_TMPDIR_PREFIX  SMBD_TMPNAME_PREFIX "D:"
 849 #define IS_SMBD_TMPNAME_PREFIX(__n) \
 850         unlikely(__n[0] == '.' && __n[1] == ':' && \
 851          strncmp(__n, SMBD_TMPNAME_PREFIX, sizeof(SMBD_TMPNAME_PREFIX) -1) == 0)
 852 #define IS_SMBD_TMPNAME(__n, __unlink_flags) \
 853         (IS_SMBD_TMPNAME_PREFIX(__n) && \
 854          smbd_is_tmpname(__n, __unlink_flags))
 855
 856 #endif /* _SOURCE3_SMBD_GLOBALS_H_ */