source3/smbd/smbXsrv_client.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Copyright (C) Stefan Metzmacher 2014
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "includes.h"
  21 #include "system/filesys.h"
  22 #include <tevent.h>
  23 #include "lib/util/server_id.h"
  24 #include "smbd/smbd.h"
  25 #include "smbd/globals.h"
  26 #include "dbwrap/dbwrap.h"
  27 #include "dbwrap/dbwrap_rbt.h"
  28 #include "dbwrap/dbwrap_open.h"
  29 #include "dbwrap/dbwrap_watch.h"
  30 #include "session.h"
  31 #include "auth.h"
  32 #include "auth/gensec/gensec.h"
  33 #include "../lib/tsocket/tsocket.h"
  34 #include "../libcli/security/security.h"
  35 #include "messages.h"
  36 #include "lib/util/util_tdb.h"
  37 #include "librpc/gen_ndr/ndr_smbXsrv.h"
  38 #include "serverid.h"
  39 #include "lib/util/tevent_ntstatus.h"
  40 #include "lib/util/iov_buf.h"
  41
  42 struct smbXsrv_client_table {
  43         struct {
  44                 uint32_t max_clients;
  45                 uint32_t num_clients;
  46         } local;
  47         struct {
  48                 struct db_context *db_ctx;
  49         } global;
  50 };
  51
  52 static struct db_context *smbXsrv_client_global_db_ctx = NULL;
  53
  54 NTSTATUS smbXsrv_client_global_init(void)
  55 {
  56         const char *global_path = NULL;
  57         struct db_context *db_ctx = NULL;
  58
  59         if (smbXsrv_client_global_db_ctx != NULL) {
  60                 return NT_STATUS_OK;
  61         }
  62
  63         /*
  64          * This contains secret information like client keys!
  65          */
  66         global_path = lock_path(talloc_tos(), "smbXsrv_client_global.tdb");
  67         if (global_path == NULL) {
  68                 return NT_STATUS_NO_MEMORY;
  69         }
  70
  71         db_ctx = db_open(NULL, global_path,
  72                          0, /* hash_size */
  73                          TDB_DEFAULT |
  74                          TDB_CLEAR_IF_FIRST |
  75                          TDB_INCOMPATIBLE_HASH,
  76                          O_RDWR | O_CREAT, 0600,
  77                          DBWRAP_LOCK_ORDER_1,
  78                          DBWRAP_FLAG_NONE);
  79         if (db_ctx == NULL) {
  80                 NTSTATUS status;
  81
  82                 status = map_nt_error_from_unix_common(errno);
  83
  84                 return status;
  85         }
  86
  87         smbXsrv_client_global_db_ctx = db_ctx;
  88
  89         return NT_STATUS_OK;
  90 }
  91
  92 /*
  93  * NOTE:
  94  * We need to store the keys in big endian so that dbwrap_rbt's memcmp
  95  * has the same result as integer comparison between the uint32_t
  96  * values.
  97  *
  98  * TODO: implement string based key
  99  */
 100
 101 #define SMBXSRV_CLIENT_GLOBAL_TDB_KEY_SIZE 16
 102
 103 static TDB_DATA smbXsrv_client_global_id_to_key(const struct GUID *client_guid,
 104                                                 uint8_t *key_buf)
 105 {
 106         TDB_DATA key = { .dsize = 0, };
 107         NTSTATUS status;
 108         DATA_BLOB b;
 109
 110         status = GUID_to_ndr_blob(client_guid, talloc_tos(), &b);
 111         if (!NT_STATUS_IS_OK(status)) {
 112                 return key;
 113         }
 114         memcpy(key_buf, b.data, SMBXSRV_CLIENT_GLOBAL_TDB_KEY_SIZE);
 115         data_blob_free(&b);
 116
 117         key = make_tdb_data(key_buf, SMBXSRV_CLIENT_GLOBAL_TDB_KEY_SIZE);
 118
 119         return key;
 120 }
 121
 122 static struct db_record *smbXsrv_client_global_fetch_locked(
 123                         struct db_context *db,
 124                         const struct GUID *client_guid,
 125                         TALLOC_CTX *mem_ctx)
 126 {
 127         TDB_DATA key;
 128         uint8_t key_buf[SMBXSRV_CLIENT_GLOBAL_TDB_KEY_SIZE];
 129         struct db_record *rec = NULL;
 130
 131         key = smbXsrv_client_global_id_to_key(client_guid, key_buf);
 132
 133         rec = dbwrap_fetch_locked(db, mem_ctx, key);
 134
 135         if (rec == NULL) {
 136                 struct GUID_txt_buf buf;
 137                 DBG_DEBUG("Failed to lock guid [%s], key '%s'\n",
 138                           GUID_buf_string(client_guid, &buf),
 139                           hex_encode_talloc(talloc_tos(), key.dptr, key.dsize));
 140         }
 141
 142         return rec;
 143 }
 144
 145 static NTSTATUS smbXsrv_client_table_create(TALLOC_CTX *mem_ctx,
 146                                             struct messaging_context *msg_ctx,
 147                                             uint32_t max_clients,
 148                                             struct smbXsrv_client_table **_table)
 149 {
 150         struct smbXsrv_client_table *table;
 151         NTSTATUS status;
 152
 153         if (max_clients > 1) {
 154                 return NT_STATUS_INTERNAL_ERROR;
 155         }
 156
 157         table = talloc_zero(mem_ctx, struct smbXsrv_client_table);
 158         if (table == NULL) {
 159                 return NT_STATUS_NO_MEMORY;
 160         }
 161
 162         table->local.max_clients = max_clients;
 163
 164         status = smbXsrv_client_global_init();
 165         if (!NT_STATUS_IS_OK(status)) {
 166                 TALLOC_FREE(table);
 167                 return status;
 168         }
 169
 170         table->global.db_ctx = smbXsrv_client_global_db_ctx;
 171
 172         *_table = table;
 173         return NT_STATUS_OK;
 174 }
 175
 176 static int smbXsrv_client_global_destructor(struct smbXsrv_client_global0 *global)
 177 {
 178         return 0;
 179 }
 180
 181 static void smbXsrv_client_global_verify_record(struct db_record *db_rec,
 182                                         bool *is_free,
 183                                         bool *was_free,
 184                                         TALLOC_CTX *mem_ctx,
 185                                         struct smbXsrv_client_global0 **_g)
 186 {
 187         TDB_DATA key;
 188         TDB_DATA val;
 189         DATA_BLOB blob;
 190         struct smbXsrv_client_globalB global_blob;
 191         enum ndr_err_code ndr_err;
 192         struct smbXsrv_client_global0 *global = NULL;
 193         bool exists;
 194         TALLOC_CTX *frame = talloc_stackframe();
 195
 196         *is_free = false;
 197
 198         if (was_free) {
 199                 *was_free = false;
 200         }
 201         if (_g) {
 202                 *_g = NULL;
 203         }
 204
 205         key = dbwrap_record_get_key(db_rec);
 206
 207         val = dbwrap_record_get_value(db_rec);
 208         if (val.dsize == 0) {
 209                 TALLOC_FREE(frame);
 210                 *is_free = true;
 211                 if (was_free) {
 212                         *was_free = true;
 213                 }
 214                 return;
 215         }
 216
 217         blob = data_blob_const(val.dptr, val.dsize);
 218
 219         ndr_err = ndr_pull_struct_blob(&blob, frame, &global_blob,
 220                         (ndr_pull_flags_fn_t)ndr_pull_smbXsrv_client_globalB);
 221         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 222                 NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
 223                 DBG_WARNING("smbXsrv_client_global_verify_record: "
 224                             "key '%s' ndr_pull_struct_blob - %s\n",
 225                             hex_encode_talloc(frame, key.dptr, key.dsize),
 226                             nt_errstr(status));
 227                 TALLOC_FREE(frame);
 228                 return;
 229         }
 230
 231         DBG_DEBUG("client_global:\n");
 232         if (DEBUGLVL(DBGLVL_DEBUG)) {
 233                 NDR_PRINT_DEBUG(smbXsrv_client_globalB, &global_blob);
 234         }
 235
 236         if (global_blob.version != SMBXSRV_VERSION_0) {
 237                 DBG_ERR("key '%s' use unsupported version %u\n",
 238                         hex_encode_talloc(frame, key.dptr, key.dsize),
 239                         global_blob.version);
 240                 NDR_PRINT_DEBUG(smbXsrv_client_globalB, &global_blob);
 241                 TALLOC_FREE(frame);
 242                 return;
 243         }
 244
 245         global = global_blob.info.info0;
 246
 247         exists = serverid_exists(&global->server_id);
 248         if (!exists) {
 249                 struct server_id_buf tmp;
 250
 251                 DBG_NOTICE("key '%s' server_id %s does not exist.\n",
 252                            hex_encode_talloc(frame, key.dptr, key.dsize),
 253                            server_id_str_buf(global->server_id, &tmp));
 254                 if (DEBUGLVL(DBGLVL_NOTICE)) {
 255                         NDR_PRINT_DEBUG(smbXsrv_client_globalB, &global_blob);
 256                 }
 257                 TALLOC_FREE(frame);
 258                 dbwrap_record_delete(db_rec);
 259                 *is_free = true;
 260                 return;
 261         }
 262
 263         if (_g) {
 264                 *_g = talloc_move(mem_ctx, &global);
 265         }
 266         TALLOC_FREE(frame);
 267 }
 268
 269 NTSTATUS smb2srv_client_lookup_global(struct smbXsrv_client *client,
 270                                       struct GUID client_guid,
 271                                       TALLOC_CTX *mem_ctx,
 272                                       struct smbXsrv_client_global0 **_global)
 273 {
 274         struct smbXsrv_client_table *table = client->table;
 275         struct smbXsrv_client_global0 *global = NULL;
 276         bool is_free = false;
 277         struct db_record *db_rec;
 278
 279         db_rec = smbXsrv_client_global_fetch_locked(table->global.db_ctx,
 280                                                     &client_guid,
 281                                                     talloc_tos());
 282         if (db_rec == NULL) {
 283                 return NT_STATUS_INTERNAL_DB_ERROR;
 284         }
 285
 286         smbXsrv_client_global_verify_record(db_rec,
 287                                             &is_free,
 288                                             NULL,
 289                                             mem_ctx,
 290                                             &global);
 291         TALLOC_FREE(db_rec);
 292
 293         if (is_free) {
 294                 return NT_STATUS_OBJECTID_NOT_FOUND;
 295         }
 296
 297         *_global = global;
 298         return NT_STATUS_OK;
 299 }
 300
 301 NTSTATUS smb2srv_client_connection_pass(struct smbd_smb2_request *smb2req,
 302                                         struct smbXsrv_client_global0 *global)
 303 {
 304         DATA_BLOB blob;
 305         enum ndr_err_code ndr_err;
 306         NTSTATUS status;
 307         struct smbXsrv_connection_pass0 pass_info0;
 308         struct smbXsrv_connection_passB pass_blob;
 309         ssize_t reqlen;
 310         struct iovec iov;
 311
 312         pass_info0.initial_connect_time = global->initial_connect_time;
 313         pass_info0.client_guid = global->client_guid;
 314
 315         reqlen = iov_buflen(smb2req->in.vector, smb2req->in.vector_count);
 316         if (reqlen == -1) {
 317                 return NT_STATUS_INVALID_BUFFER_SIZE;
 318         }
 319
 320         pass_info0.negotiate_request.length = reqlen;
 321         pass_info0.negotiate_request.data = talloc_array(talloc_tos(), uint8_t,
 322                                                          reqlen);
 323         if (pass_info0.negotiate_request.data == NULL) {
 324                 return NT_STATUS_NO_MEMORY;
 325         }
 326         iov_buf(smb2req->in.vector, smb2req->in.vector_count,
 327                 pass_info0.negotiate_request.data,
 328                 pass_info0.negotiate_request.length);
 329
 330         ZERO_STRUCT(pass_blob);
 331         pass_blob.version = smbXsrv_version_global_current();
 332         pass_blob.info.info0 = &pass_info0;
 333
 334         if (DEBUGLVL(DBGLVL_DEBUG)) {
 335                 NDR_PRINT_DEBUG(smbXsrv_connection_passB, &pass_blob);
 336         }
 337
 338         ndr_err = ndr_push_struct_blob(&blob, talloc_tos(), &pass_blob,
 339                         (ndr_push_flags_fn_t)ndr_push_smbXsrv_connection_passB);
 340         data_blob_free(&pass_info0.negotiate_request);
 341         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 342                 status = ndr_map_error2ntstatus(ndr_err);
 343                 return status;
 344         }
 345
 346         iov.iov_base = blob.data;
 347         iov.iov_len = blob.length;
 348
 349         status = messaging_send_iov(smb2req->xconn->client->msg_ctx,
 350                                     global->server_id,
 351                                     MSG_SMBXSRV_CONNECTION_PASS,
 352                                     &iov, 1,
 353                                     &smb2req->xconn->transport.sock, 1);
 354         data_blob_free(&blob);
 355         if (!NT_STATUS_IS_OK(status)) {
 356                 return status;
 357         }
 358
 359         return NT_STATUS_OK;
 360 }
 361
 362 static NTSTATUS smbXsrv_client_global_store(struct smbXsrv_client_global0 *global)
 363 {
 364         struct smbXsrv_client_globalB global_blob;
 365         DATA_BLOB blob = data_blob_null;
 366         TDB_DATA key;
 367         TDB_DATA val;
 368         NTSTATUS status;
 369         enum ndr_err_code ndr_err;
 370         bool saved_stored = global->stored;
 371
 372         /*
 373          * TODO: if we use other versions than '0'
 374          * we would add glue code here, that would be able to
 375          * store the information in the old format.
 376          */
 377
 378         if (global->db_rec == NULL) {
 379                 return NT_STATUS_INTERNAL_ERROR;
 380         }
 381
 382         key = dbwrap_record_get_key(global->db_rec);
 383         val = dbwrap_record_get_value(global->db_rec);
 384
 385         ZERO_STRUCT(global_blob);
 386         global_blob.version = smbXsrv_version_global_current();
 387         if (val.dsize >= 8) {
 388                 global_blob.seqnum = IVAL(val.dptr, 4);
 389         }
 390         global_blob.seqnum += 1;
 391         global_blob.info.info0 = global;
 392
 393         global->stored = true;
 394         ndr_err = ndr_push_struct_blob(&blob, global->db_rec, &global_blob,
 395                         (ndr_push_flags_fn_t)ndr_push_smbXsrv_client_globalB);
 396         global->stored = saved_stored;
 397         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 398                 status = ndr_map_error2ntstatus(ndr_err);
 399                 DBG_WARNING("key '%s' ndr_push - %s\n",
 400                         hex_encode_talloc(global->db_rec, key.dptr, key.dsize),
 401                         nt_errstr(status));
 402                 TALLOC_FREE(global->db_rec);
 403                 return status;
 404         }
 405
 406         val = make_tdb_data(blob.data, blob.length);
 407         status = dbwrap_record_store(global->db_rec, val, TDB_REPLACE);
 408         if (!NT_STATUS_IS_OK(status)) {
 409                 DBG_WARNING("key '%s' store - %s\n",
 410                         hex_encode_talloc(global->db_rec, key.dptr, key.dsize),
 411                         nt_errstr(status));
 412                 TALLOC_FREE(global->db_rec);
 413                 return status;
 414         }
 415
 416         global->stored = true;
 417
 418         if (DEBUGLVL(DBGLVL_DEBUG)) {
 419                 DBG_DEBUG("key '%s' stored\n",
 420                         hex_encode_talloc(global->db_rec, key.dptr, key.dsize));
 421                 NDR_PRINT_DEBUG(smbXsrv_client_globalB, &global_blob);
 422         }
 423
 424         TALLOC_FREE(global->db_rec);
 425
 426         return NT_STATUS_OK;
 427 }
 428
 429 static NTSTATUS smbXsrv_client_global_remove(struct smbXsrv_client_global0 *global)
 430 {
 431         TDB_DATA key;
 432         NTSTATUS status;
 433
 434         /*
 435          * TODO: if we use other versions than '0'
 436          * we would add glue code here, that would be able to
 437          * store the information in the old format.
 438          */
 439
 440         if (global->db_rec == NULL) {
 441                 return NT_STATUS_INTERNAL_ERROR;
 442         }
 443
 444         key = dbwrap_record_get_key(global->db_rec);
 445
 446         status = dbwrap_record_delete(global->db_rec);
 447         if (!NT_STATUS_IS_OK(status)) {
 448                 DBG_WARNING("key '%s' delete - %s\n",
 449                         hex_encode_talloc(global->db_rec, key.dptr, key.dsize),
 450                         nt_errstr(status));
 451                 TALLOC_FREE(global->db_rec);
 452                 return status;
 453         }
 454         global->stored = false;
 455         DBG_DEBUG("key '%s' delete\n",
 456                   hex_encode_talloc(global->db_rec, key.dptr, key.dsize));
 457
 458         TALLOC_FREE(global->db_rec);
 459
 460         return NT_STATUS_OK;
 461 }
 462
 463 static int smbXsrv_client_destructor(struct smbXsrv_client *client)
 464 {
 465         NTSTATUS status;
 466
 467         status = smbXsrv_client_remove(client);
 468         if (!NT_STATUS_IS_OK(status)) {
 469                 DBG_ERR("smbXsrv_client_remove() failed: %s\n",
 470                         nt_errstr(status));
 471         }
 472
 473         TALLOC_FREE(client->global);
 474
 475         return 0;
 476 }
 477
 478 static bool smbXsrv_client_connection_pass_filter(struct messaging_rec *rec, void *private_data);
 479 static void smbXsrv_client_connection_pass_loop(struct tevent_req *subreq);
 480
 481 NTSTATUS smbXsrv_client_create(TALLOC_CTX *mem_ctx,
 482                                struct tevent_context *ev_ctx,
 483                                struct messaging_context *msg_ctx,
 484                                NTTIME now,
 485                                struct smbXsrv_client **_client)
 486 {
 487         struct smbXsrv_client_table *table;
 488         struct smbXsrv_client *client = NULL;
 489         struct smbXsrv_client_global0 *global = NULL;
 490         NTSTATUS status;
 491         struct tevent_req *subreq = NULL;
 492
 493         status = smbXsrv_client_table_create(mem_ctx,
 494                                              msg_ctx,
 495                                              1, /* max_clients */
 496                                              &table);
 497         if (!NT_STATUS_IS_OK(status)) {
 498                 return status;
 499         }
 500
 501         if (table->local.num_clients >= table->local.max_clients) {
 502                 TALLOC_FREE(table);
 503                 return NT_STATUS_INSUFFICIENT_RESOURCES;
 504         }
 505
 506         client = talloc_zero(mem_ctx, struct smbXsrv_client);
 507         if (client == NULL) {
 508                 TALLOC_FREE(table);
 509                 return NT_STATUS_NO_MEMORY;
 510         }
 511         client->raw_ev_ctx = ev_ctx;
 512         client->msg_ctx = msg_ctx;
 513
 514         client->server_multi_channel_enabled = lp_server_multi_channel_support();
 515
 516         client->table = talloc_move(client, &table);
 517         table = client->table;
 518
 519         global = talloc_zero(client, struct smbXsrv_client_global0);
 520         if (global == NULL) {
 521                 TALLOC_FREE(client);
 522                 return NT_STATUS_NO_MEMORY;
 523         }
 524         talloc_set_destructor(global, smbXsrv_client_global_destructor);
 525         client->global = global;
 526
 527         global->initial_connect_time = now;
 528
 529         global->server_id = messaging_server_id(client->msg_ctx);
 530
 531         table->local.num_clients += 1;
 532
 533         talloc_set_destructor(client, smbXsrv_client_destructor);
 534
 535         if (DEBUGLVL(DBGLVL_DEBUG)) {
 536                 struct smbXsrv_clientB client_blob = {
 537                         .version = SMBXSRV_VERSION_0,
 538                         .info.info0 = client,
 539                 };
 540                 struct GUID_txt_buf buf;
 541
 542                 DBG_DEBUG("client_guid[%s] created\n",
 543                           GUID_buf_string(&global->client_guid, &buf));
 544                 NDR_PRINT_DEBUG(smbXsrv_clientB, &client_blob);
 545         }
 546
 547         subreq = messaging_filtered_read_send(client,
 548                                         client->raw_ev_ctx,
 549                                         client->msg_ctx,
 550                                         smbXsrv_client_connection_pass_filter,
 551                                         client);
 552         if (subreq == NULL) {
 553                 TALLOC_FREE(client);
 554                 return NT_STATUS_NO_MEMORY;
 555         }
 556         tevent_req_set_callback(subreq, smbXsrv_client_connection_pass_loop, client);
 557
 558         *_client = client;
 559         return NT_STATUS_OK;
 560 }
 561
 562 static bool smbXsrv_client_connection_pass_filter(struct messaging_rec *rec, void *private_data)
 563 {
 564         if (rec->msg_type != MSG_SMBXSRV_CONNECTION_PASS) {
 565                 return false;
 566         }
 567
 568         if (rec->num_fds != 1) {
 569                 return false;
 570         }
 571
 572         if (rec->buf.length < SMB2_HDR_BODY) {
 573                 return false;
 574         }
 575
 576         /* TODO: verify client_guid...? */
 577
 578         return true;
 579 }
 580
 581 static void smbXsrv_client_connection_pass_loop(struct tevent_req *subreq)
 582 {
 583         struct smbXsrv_client *client =
 584                 tevent_req_callback_data(subreq,
 585                 struct smbXsrv_client);
 586         struct smbXsrv_connection *xconn = NULL;
 587         int ret;
 588         struct messaging_rec *rec = NULL;
 589         struct smbXsrv_connection_passB pass_blob;
 590         enum ndr_err_code ndr_err;
 591         struct smbXsrv_connection_pass0 *pass_info0 = NULL;
 592         NTSTATUS status;
 593         int sock_fd = -1;
 594         uint64_t seq_low;
 595
 596         ret = messaging_filtered_read_recv(subreq, talloc_tos(), &rec);
 597         TALLOC_FREE(subreq);
 598         if (ret != 0) {
 599                 goto next;
 600         }
 601
 602         ndr_err = ndr_pull_struct_blob(&rec->buf, rec, &pass_blob,
 603                         (ndr_pull_flags_fn_t)ndr_pull_smbXsrv_connection_passB);
 604         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 605                 status = ndr_map_error2ntstatus(ndr_err);
 606                 DBG_WARNING("ndr_pull_struct_blob - %s\n", nt_errstr(status));
 607                 goto next;
 608         }
 609
 610         DBG_DEBUG("MSG_SMBXSRV_CLIENT_CLOSE\n");
 611         if (DEBUGLVL(DBGLVL_DEBUG)) {
 612                 NDR_PRINT_DEBUG(smbXsrv_connection_passB, &pass_blob);
 613         }
 614
 615         if (pass_blob.version != SMBXSRV_VERSION_0) {
 616                 DBG_ERR("ignore invalid version %u\n", pass_blob.version);
 617                 NDR_PRINT_DEBUG(smbXsrv_connection_passB, &pass_blob);
 618                 goto next;
 619         }
 620
 621         pass_info0 = pass_blob.info.info0;
 622         if (pass_info0 == NULL) {
 623                 DBG_ERR("ignore NULL info %u\n", pass_blob.version);
 624                 NDR_PRINT_DEBUG(smbXsrv_connection_passB, &pass_blob);
 625                 goto next;
 626         }
 627
 628         if (!GUID_equal(&client->global->client_guid, &pass_info0->client_guid))
 629         {
 630                 struct GUID_txt_buf buf1, buf2;
 631
 632                 DBG_WARNING("client's client_guid [%s] != passed guid [%s]\n",
 633                             GUID_buf_string(&client->global->client_guid,
 634                                             &buf1),
 635                             GUID_buf_string(&pass_info0->client_guid,
 636                                             &buf2));
 637                 if (DEBUGLVL(DBGLVL_WARNING)) {
 638                         NDR_PRINT_DEBUG(smbXsrv_connection_passB, &pass_blob);
 639                 }
 640                 goto next;
 641         }
 642
 643         if (client->global->initial_connect_time !=
 644             pass_info0->initial_connect_time)
 645         {
 646                 DBG_WARNING("client's initial connect time [%s] (%llu) != "
 647                         "passed initial connect time [%s] (%llu)\n",
 648                         nt_time_string(talloc_tos(),
 649                                        client->global->initial_connect_time),
 650                         (unsigned long long)client->global->initial_connect_time,
 651                         nt_time_string(talloc_tos(),
 652                                        pass_info0->initial_connect_time),
 653                         (unsigned long long)pass_info0->initial_connect_time);
 654                 if (DEBUGLVL(DBGLVL_WARNING)) {
 655                         NDR_PRINT_DEBUG(smbXsrv_connection_passB, &pass_blob);
 656                 }
 657                 goto next;
 658         }
 659
 660         SMB_ASSERT(rec->num_fds == 1);
 661         sock_fd = rec->fds[0];
 662
 663         DBG_ERR("got connection sockfd[%d]\n", sock_fd);
 664         NDR_PRINT_DEBUG(smbXsrv_connection_passB, &pass_blob);
 665         status = smbd_add_connection(client, sock_fd, &xconn);
 666         if (!NT_STATUS_IS_OK(status)) {
 667                 close(sock_fd);
 668                 sock_fd = -1;
 669                 DBG_ERR("smbd_add_connection => %s\n", nt_errstr(status));
 670                 NDR_PRINT_DEBUG(smbXsrv_connection_passB, &pass_blob);
 671                 goto next;
 672         }
 673
 674         /*
 675          * Set seq_low to mid received in negprot
 676          */
 677         seq_low = BVAL(pass_info0->negotiate_request.data,
 678                        SMB2_HDR_MESSAGE_ID);
 679
 680         xconn->smb2.client.guid_verified = true;
 681         smbd_smb2_process_negprot(xconn, seq_low,
 682                                   pass_info0->negotiate_request.data,
 683                                   pass_info0->negotiate_request.length);
 684
 685 next:
 686         TALLOC_FREE(rec);
 687
 688         subreq = messaging_filtered_read_send(client,
 689                                         client->raw_ev_ctx,
 690                                         client->msg_ctx,
 691                                         smbXsrv_client_connection_pass_filter,
 692                                         client);
 693         if (subreq == NULL) {
 694                 const char *r;
 695                 r = "messaging_read_send(MSG_SMBXSRV_CONNECTION_PASS failed";
 696                 exit_server_cleanly(r);
 697                 return;
 698         }
 699         tevent_req_set_callback(subreq, smbXsrv_client_connection_pass_loop, client);
 700 }
 701
 702 NTSTATUS smbXsrv_client_update(struct smbXsrv_client *client)
 703 {
 704         struct smbXsrv_client_table *table = client->table;
 705         NTSTATUS status;
 706
 707         if (client->global->db_rec != NULL) {
 708                 struct GUID_txt_buf buf;
 709                 DBG_ERR("guid [%s]: Called with db_rec != NULL'\n",
 710                         GUID_buf_string(&client->global->client_guid,
 711                                         &buf));
 712                 return NT_STATUS_INTERNAL_ERROR;
 713         }
 714
 715         client->global->db_rec = smbXsrv_client_global_fetch_locked(
 716                                         table->global.db_ctx,
 717                                         &client->global->client_guid,
 718                                         client->global /* TALLOC_CTX */);
 719         if (client->global->db_rec == NULL) {
 720                 return NT_STATUS_INTERNAL_DB_ERROR;
 721         }
 722
 723         status = smbXsrv_client_global_store(client->global);
 724         if (!NT_STATUS_IS_OK(status)) {
 725                 struct GUID_txt_buf buf;
 726                 DBG_ERR("client_guid[%s] store failed - %s\n",
 727                         GUID_buf_string(&client->global->client_guid,
 728                                         &buf),
 729                         nt_errstr(status));
 730                 return status;
 731         }
 732
 733         if (DEBUGLVL(DBGLVL_DEBUG)) {
 734                 struct smbXsrv_clientB client_blob = {
 735                         .version = SMBXSRV_VERSION_0,
 736                         .info.info0 = client,
 737                 };
 738                 struct GUID_txt_buf buf;
 739
 740                 DBG_DEBUG("client_guid[%s] stored\n",
 741                           GUID_buf_string(&client->global->client_guid,
 742                                           &buf));
 743                 NDR_PRINT_DEBUG(smbXsrv_clientB, &client_blob);
 744         }
 745
 746         return NT_STATUS_OK;
 747 }
 748
 749 NTSTATUS smbXsrv_client_remove(struct smbXsrv_client *client)
 750 {
 751         struct smbXsrv_client_table *table = client->table;
 752         NTSTATUS status;
 753
 754         if (client->global->db_rec != NULL) {
 755                 struct GUID_txt_buf buf;
 756                 DBG_ERR("client_guid[%s]: Called with db_rec != NULL'\n",
 757                         GUID_buf_string(&client->global->client_guid,
 758                                         &buf));
 759                 return NT_STATUS_INTERNAL_ERROR;
 760         }
 761
 762         if (!client->global->stored) {
 763                 return NT_STATUS_OK;
 764         }
 765
 766         client->global->db_rec = smbXsrv_client_global_fetch_locked(
 767                                         table->global.db_ctx,
 768                                         &client->global->client_guid,
 769                                         client->global /* TALLOC_CTX */);
 770         if (client->global->db_rec == NULL) {
 771                 return NT_STATUS_INTERNAL_DB_ERROR;
 772         }
 773
 774         status = smbXsrv_client_global_remove(client->global);
 775         if (!NT_STATUS_IS_OK(status)) {
 776                 struct GUID_txt_buf buf;
 777                 DBG_ERR("client_guid[%s] store failed - %s\n",
 778                         GUID_buf_string(&client->global->client_guid, &buf),
 779                         nt_errstr(status));
 780                 return status;
 781         }
 782
 783         if (DEBUGLVL(DBGLVL_DEBUG)) {
 784                 struct smbXsrv_clientB client_blob = {
 785                         .version = SMBXSRV_VERSION_0,
 786                         .info.info0 = client,
 787                 };
 788                 struct GUID_txt_buf buf;
 789
 790                 DBG_DEBUG("client_guid[%s] stored\n",
 791                           GUID_buf_string(&client->global->client_guid, &buf));
 792                 NDR_PRINT_DEBUG(smbXsrv_clientB, &client_blob);
 793         }
 794
 795         return NT_STATUS_OK;
 796 }