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