source3/libnet/libnet_dssync.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Copyright (C) Stefan (metze) Metzmacher 2005
   5    Copyright (C) Guenther Deschner 2008
   6    Copyright (C) Michael Adam 2008
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22
  23 #include "includes.h"
  24 #include "libnet/libnet_dssync.h"
  25 #include "../libcli/drsuapi/drsuapi.h"
  26 #include "../librpc/gen_ndr/ndr_drsuapi_c.h"
  27
  28 /****************************************************************
  29 ****************************************************************/
  30
  31 static int libnet_dssync_free_context(struct dssync_context *ctx)
  32 {
  33         WERROR result;
  34         struct dcerpc_binding_handle *b;
  35
  36         if (!ctx) {
  37                 return 0;
  38         }
  39
  40         if (is_valid_policy_hnd(&ctx->bind_handle) && ctx->cli) {
  41                 b = ctx->cli->binding_handle;
  42                 dcerpc_drsuapi_DsUnbind(b, ctx, &ctx->bind_handle, &result);
  43         }
  44
  45         return 0;
  46 }
  47
  48 /****************************************************************
  49 ****************************************************************/
  50
  51 NTSTATUS libnet_dssync_init_context(TALLOC_CTX *mem_ctx,
  52                                     struct dssync_context **ctx_p)
  53 {
  54         struct dssync_context *ctx;
  55
  56         ctx = TALLOC_ZERO_P(mem_ctx, struct dssync_context);
  57         NT_STATUS_HAVE_NO_MEMORY(ctx);
  58
  59         talloc_set_destructor(ctx, libnet_dssync_free_context);
  60         ctx->clean_old_entries = false;
  61
  62         *ctx_p = ctx;
  63
  64         return NT_STATUS_OK;
  65 }
  66
  67 /****************************************************************
  68 ****************************************************************/
  69
  70 static void parse_obj_identifier(struct drsuapi_DsReplicaObjectIdentifier *id,
  71                                  uint32_t *rid)
  72 {
  73         if (!id || !rid) {
  74                 return;
  75         }
  76
  77         *rid = 0;
  78
  79         if (id->sid.num_auths > 0) {
  80                 *rid = id->sid.sub_auths[id->sid.num_auths - 1];
  81         }
  82 }
  83
  84 /****************************************************************
  85 ****************************************************************/
  86
  87 static void libnet_dssync_decrypt_attributes(TALLOC_CTX *mem_ctx,
  88                                              DATA_BLOB *session_key,
  89                                              struct drsuapi_DsReplicaObjectListItemEx *cur)
  90 {
  91         for (; cur; cur = cur->next_object) {
  92
  93                 uint32_t i;
  94                 uint32_t rid = 0;
  95
  96                 parse_obj_identifier(cur->object.identifier, &rid);
  97
  98                 for (i=0; i < cur->object.attribute_ctr.num_attributes; i++) {
  99
 100                         struct drsuapi_DsReplicaAttribute *attr;
 101
 102                         attr = &cur->object.attribute_ctr.attributes[i];
 103
 104                         if (attr->value_ctr.num_values < 1) {
 105                                 continue;
 106                         }
 107
 108                         if (!attr->value_ctr.values[0].blob) {
 109                                 continue;
 110                         }
 111
 112                         drsuapi_decrypt_attribute(mem_ctx,
 113                                                   session_key,
 114                                                   rid,
 115                                                   attr);
 116                 }
 117         }
 118 }
 119 /****************************************************************
 120 ****************************************************************/
 121
 122 static NTSTATUS libnet_dssync_bind(TALLOC_CTX *mem_ctx,
 123                                    struct dssync_context *ctx)
 124 {
 125         NTSTATUS status;
 126         WERROR werr;
 127
 128         struct GUID bind_guid;
 129         struct drsuapi_DsBindInfoCtr bind_info;
 130         struct drsuapi_DsBindInfo28 info28;
 131         struct dcerpc_binding_handle *b = ctx->cli->binding_handle;
 132
 133         ZERO_STRUCT(info28);
 134
 135         GUID_from_string(DRSUAPI_DS_BIND_GUID, &bind_guid);
 136
 137         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_BASE;
 138         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_ASYNC_REPLICATION;
 139         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_REMOVEAPI;
 140         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_MOVEREQ_V2;
 141         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_GETCHG_COMPRESS;
 142         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V1;
 143         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_RESTORE_USN_OPTIMIZATION;
 144         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_KCC_EXECUTE;
 145         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_ADDENTRY_V2;
 146         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_LINKED_VALUE_REPLICATION;
 147         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V2;
 148         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_INSTANCE_TYPE_NOT_REQ_ON_MOD;
 149         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_CRYPTO_BIND;
 150         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_GET_REPL_INFO;
 151         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_STRONG_ENCRYPTION;
 152         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V01;
 153         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_TRANSITIVE_MEMBERSHIP;
 154         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_ADD_SID_HISTORY;
 155         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_POST_BETA3;
 156         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_GET_MEMBERSHIPS2;
 157         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V6;
 158         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_NONDOMAIN_NCS;
 159         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V8;
 160         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V5;
 161         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V6;
 162         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_ADDENTRYREPLY_V3;
 163         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V7;
 164         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_VERIFY_OBJECT;
 165         info28.site_guid                = GUID_zero();
 166         info28.pid                      = 508;
 167         info28.repl_epoch               = 0;
 168
 169         bind_info.length = 28;
 170         bind_info.info.info28 = info28;
 171
 172         status = dcerpc_drsuapi_DsBind(b, mem_ctx,
 173                                        &bind_guid,
 174                                        &bind_info,
 175                                        &ctx->bind_handle,
 176                                        &werr);
 177
 178         if (!NT_STATUS_IS_OK(status)) {
 179                 return status;
 180         }
 181
 182         if (!W_ERROR_IS_OK(werr)) {
 183                 return werror_to_ntstatus(werr);
 184         }
 185
 186         ZERO_STRUCT(ctx->remote_info28);
 187         switch (bind_info.length) {
 188         case 24: {
 189                 struct drsuapi_DsBindInfo24 *info24;
 190                 info24 = &bind_info.info.info24;
 191                 ctx->remote_info28.site_guid            = info24->site_guid;
 192                 ctx->remote_info28.supported_extensions = info24->supported_extensions;
 193                 ctx->remote_info28.pid                  = info24->pid;
 194                 ctx->remote_info28.repl_epoch           = 0;
 195                 break;
 196         }
 197         case 28:
 198                 ctx->remote_info28 = bind_info.info.info28;
 199                 break;
 200         case 48: {
 201                 struct drsuapi_DsBindInfo48 *info48;
 202                 info48 = &bind_info.info.info48;
 203                 ctx->remote_info28.site_guid            = info48->site_guid;
 204                 ctx->remote_info28.supported_extensions = info48->supported_extensions;
 205                 ctx->remote_info28.pid                  = info48->pid;
 206                 ctx->remote_info28.repl_epoch           = info48->repl_epoch;
 207                 break;
 208         }
 209         default:
 210                 DEBUG(1, ("Warning: invalid info length in bind info: %d\n",
 211                           bind_info.length));
 212                 break;
 213         }
 214
 215         return status;
 216 }
 217
 218 /****************************************************************
 219 ****************************************************************/
 220
 221 static NTSTATUS libnet_dssync_lookup_nc(TALLOC_CTX *mem_ctx,
 222                                         struct dssync_context *ctx)
 223 {
 224         NTSTATUS status;
 225         WERROR werr;
 226         uint32_t level = 1;
 227         union drsuapi_DsNameRequest req;
 228         uint32_t level_out;
 229         struct drsuapi_DsNameString names[1];
 230         union drsuapi_DsNameCtr ctr;
 231         struct dcerpc_binding_handle *b = ctx->cli->binding_handle;
 232
 233         names[0].str = talloc_asprintf(mem_ctx, "%s\\", ctx->domain_name);
 234         NT_STATUS_HAVE_NO_MEMORY(names[0].str);
 235
 236         req.req1.codepage       = 1252; /* german */
 237         req.req1.language       = 0x00000407; /* german */
 238         req.req1.count          = 1;
 239         req.req1.names          = names;
 240         req.req1.format_flags   = DRSUAPI_DS_NAME_FLAG_NO_FLAGS;
 241         req.req1.format_offered = DRSUAPI_DS_NAME_FORMAT_UNKNOWN;
 242         req.req1.format_desired = DRSUAPI_DS_NAME_FORMAT_FQDN_1779;
 243
 244         status = dcerpc_drsuapi_DsCrackNames(b, mem_ctx,
 245                                              &ctx->bind_handle,
 246                                              level,
 247                                              &req,
 248                                              &level_out,
 249                                              &ctr,
 250                                              &werr);
 251         if (!NT_STATUS_IS_OK(status)) {
 252                 ctx->error_message = talloc_asprintf(ctx,
 253                         "Failed to lookup DN for domain name: %s",
 254                         get_friendly_werror_msg(werr));
 255                 return status;
 256         }
 257
 258         if (!W_ERROR_IS_OK(werr)) {
 259                 return werror_to_ntstatus(werr);
 260         }
 261
 262         if (ctr.ctr1->count != 1) {
 263                 return NT_STATUS_UNSUCCESSFUL;
 264         }
 265
 266         if (ctr.ctr1->array[0].status != DRSUAPI_DS_NAME_STATUS_OK) {
 267                 return NT_STATUS_UNSUCCESSFUL;
 268         }
 269
 270         ctx->nc_dn = talloc_strdup(mem_ctx, ctr.ctr1->array[0].result_name);
 271         NT_STATUS_HAVE_NO_MEMORY(ctx->nc_dn);
 272
 273         if (!ctx->dns_domain_name) {
 274                 ctx->dns_domain_name = talloc_strdup_upper(mem_ctx,
 275                         ctr.ctr1->array[0].dns_domain_name);
 276                 NT_STATUS_HAVE_NO_MEMORY(ctx->dns_domain_name);
 277         }
 278
 279         return NT_STATUS_OK;
 280 }
 281
 282 /****************************************************************
 283 ****************************************************************/
 284
 285 static NTSTATUS libnet_dssync_init(TALLOC_CTX *mem_ctx,
 286                                    struct dssync_context *ctx)
 287 {
 288         NTSTATUS status;
 289
 290         status = libnet_dssync_bind(mem_ctx, ctx);
 291         if (!NT_STATUS_IS_OK(status)) {
 292                 return status;
 293         }
 294
 295         if (!ctx->nc_dn) {
 296                 status = libnet_dssync_lookup_nc(mem_ctx, ctx);
 297         }
 298
 299         return status;
 300 }
 301
 302 /****************************************************************
 303 ****************************************************************/
 304
 305 static NTSTATUS libnet_dssync_build_request(TALLOC_CTX *mem_ctx,
 306                                             struct dssync_context *ctx,
 307                                             const char *dn,
 308                                             struct replUpToDateVectorBlob *utdv,
 309                                             uint32_t *plevel,
 310                                             union drsuapi_DsGetNCChangesRequest *preq)
 311 {
 312         NTSTATUS status;
 313         uint32_t count;
 314         uint32_t level;
 315         union drsuapi_DsGetNCChangesRequest req;
 316         struct dom_sid null_sid;
 317         enum drsuapi_DsExtendedOperation extended_op;
 318         struct drsuapi_DsReplicaObjectIdentifier *nc = NULL;
 319         struct drsuapi_DsReplicaCursorCtrEx *cursors = NULL;
 320
 321         uint32_t replica_flags  = DRSUAPI_DRS_WRIT_REP |
 322                                   DRSUAPI_DRS_INIT_SYNC |
 323                                   DRSUAPI_DRS_PER_SYNC |
 324                                   DRSUAPI_DRS_GET_ANC |
 325                                   DRSUAPI_DRS_NEVER_SYNCED;
 326
 327         ZERO_STRUCT(null_sid);
 328         ZERO_STRUCT(req);
 329
 330         if (ctx->remote_info28.supported_extensions
 331             & DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V8)
 332         {
 333                 level = 8;
 334         } else {
 335                 level = 5;
 336         }
 337
 338         nc = TALLOC_ZERO_P(mem_ctx, struct drsuapi_DsReplicaObjectIdentifier);
 339         if (!nc) {
 340                 status = NT_STATUS_NO_MEMORY;
 341                 goto fail;
 342         }
 343         nc->dn = dn;
 344         nc->guid = GUID_zero();
 345         nc->sid = null_sid;
 346
 347         if (!ctx->single_object_replication &&
 348             !ctx->force_full_replication && utdv)
 349         {
 350                 cursors = TALLOC_ZERO_P(mem_ctx,
 351                                          struct drsuapi_DsReplicaCursorCtrEx);
 352                 if (!cursors) {
 353                         status = NT_STATUS_NO_MEMORY;
 354                         goto fail;
 355                 }
 356
 357                 switch (utdv->version) {
 358                 case 1:
 359                         cursors->count = utdv->ctr.ctr1.count;
 360                         cursors->cursors = utdv->ctr.ctr1.cursors;
 361                         break;
 362                 case 2:
 363                         cursors->count = utdv->ctr.ctr2.count;
 364                         cursors->cursors = talloc_array(cursors,
 365                                                 struct drsuapi_DsReplicaCursor,
 366                                                 cursors->count);
 367                         if (!cursors->cursors) {
 368                                 status = NT_STATUS_NO_MEMORY;
 369                                 goto fail;
 370                         }
 371                         for (count = 0; count < cursors->count; count++) {
 372                                 cursors->cursors[count].source_dsa_invocation_id =
 373                                         utdv->ctr.ctr2.cursors[count].source_dsa_invocation_id;
 374                                 cursors->cursors[count].highest_usn =
 375                                         utdv->ctr.ctr2.cursors[count].highest_usn;
 376                         }
 377                         break;
 378                 }
 379         }
 380
 381         if (ctx->single_object_replication) {
 382                 extended_op = DRSUAPI_EXOP_REPL_OBJ;
 383         } else {
 384                 extended_op = DRSUAPI_EXOP_NONE;
 385         }
 386
 387         if (level == 8) {
 388                 req.req8.naming_context         = nc;
 389                 req.req8.replica_flags          = replica_flags;
 390                 req.req8.max_object_count       = 402;
 391                 req.req8.max_ndr_size           = 402116;
 392                 req.req8.uptodateness_vector    = cursors;
 393                 req.req8.extended_op            = extended_op;
 394         } else if (level == 5) {
 395                 req.req5.naming_context         = nc;
 396                 req.req5.replica_flags          = replica_flags;
 397                 req.req5.max_object_count       = 402;
 398                 req.req5.max_ndr_size           = 402116;
 399                 req.req5.uptodateness_vector    = cursors;
 400                 req.req5.extended_op            = extended_op;
 401         } else {
 402                 status = NT_STATUS_INVALID_PARAMETER;
 403                 goto fail;
 404         }
 405
 406         if (plevel) {
 407                 *plevel = level;
 408         }
 409
 410         if (preq) {
 411                 *preq = req;
 412         }
 413
 414         return NT_STATUS_OK;
 415
 416 fail:
 417         TALLOC_FREE(nc);
 418         TALLOC_FREE(cursors);
 419         return status;
 420 }
 421
 422 static NTSTATUS libnet_dssync_getncchanges(TALLOC_CTX *mem_ctx,
 423                                            struct dssync_context *ctx,
 424                                            uint32_t level,
 425                                            union drsuapi_DsGetNCChangesRequest *req,
 426                                            struct replUpToDateVectorBlob **pnew_utdv)
 427 {
 428         NTSTATUS status;
 429         WERROR werr;
 430         union drsuapi_DsGetNCChangesCtr ctr;
 431         struct drsuapi_DsGetNCChangesCtr1 *ctr1 = NULL;
 432         struct drsuapi_DsGetNCChangesCtr6 *ctr6 = NULL;
 433         struct replUpToDateVectorBlob *new_utdv = NULL;
 434         uint32_t level_out = 0;
 435         uint32_t out_level = 0;
 436         int y;
 437         bool last_query;
 438         struct dcerpc_binding_handle *b = ctx->cli->binding_handle;
 439
 440         if (!ctx->single_object_replication) {
 441                 new_utdv = TALLOC_ZERO_P(mem_ctx, struct replUpToDateVectorBlob);
 442                 if (!new_utdv) {
 443                         status = NT_STATUS_NO_MEMORY;
 444                         goto out;
 445                 }
 446         }
 447
 448         for (y=0, last_query = false; !last_query; y++) {
 449                 struct drsuapi_DsReplicaObjectListItemEx *first_object = NULL;
 450                 struct drsuapi_DsReplicaOIDMapping_Ctr *mapping_ctr = NULL;
 451
 452                 if (level == 8) {
 453                         DEBUG(1,("start[%d] tmp_higest_usn: %llu , highest_usn: %llu\n",y,
 454                                 (long long)req->req8.highwatermark.tmp_highest_usn,
 455                                 (long long)req->req8.highwatermark.highest_usn));
 456                 } else if (level == 5) {
 457                         DEBUG(1,("start[%d] tmp_higest_usn: %llu , highest_usn: %llu\n",y,
 458                                 (long long)req->req5.highwatermark.tmp_highest_usn,
 459                                 (long long)req->req5.highwatermark.highest_usn));
 460                 }
 461
 462                 status = dcerpc_drsuapi_DsGetNCChanges(b, mem_ctx,
 463                                                        &ctx->bind_handle,
 464                                                        level,
 465                                                        req,
 466                                                        &level_out,
 467                                                        &ctr,
 468                                                        &werr);
 469                 if (!NT_STATUS_IS_OK(status)) {
 470                         ctx->error_message = talloc_asprintf(ctx,
 471                                 "Failed to get NC Changes: %s",
 472                                 get_friendly_werror_msg(werr));
 473                         goto out;
 474                 }
 475
 476                 if (!W_ERROR_IS_OK(werr)) {
 477                         status = werror_to_ntstatus(werr);
 478                         ctx->error_message = talloc_asprintf(ctx,
 479                                 "Failed to get NC Changes: %s",
 480                                 get_friendly_werror_msg(werr));
 481                         goto out;
 482                 }
 483
 484                 if (level_out == 1) {
 485                         out_level = 1;
 486                         ctr1 = &ctr.ctr1;
 487                 } else if (level_out == 2 && ctr.ctr2.mszip1.ts) {
 488                         out_level = 1;
 489                         ctr1 = &ctr.ctr2.mszip1.ts->ctr1;
 490                 } else if (level_out == 6) {
 491                         out_level = 6;
 492                         ctr6 = &ctr.ctr6;
 493                 } else if (level_out == 7
 494                            && ctr.ctr7.level == 6
 495                            && ctr.ctr7.type == DRSUAPI_COMPRESSION_TYPE_MSZIP
 496                            && ctr.ctr7.ctr.mszip6.ts) {
 497                         out_level = 6;
 498                         ctr6 = &ctr.ctr7.ctr.mszip6.ts->ctr6;
 499                 } else if (level_out == 7
 500                            && ctr.ctr7.level == 6
 501                            && ctr.ctr7.type == DRSUAPI_COMPRESSION_TYPE_XPRESS
 502                            && ctr.ctr7.ctr.xpress6.ts) {
 503                         out_level = 6;
 504                         ctr6 = &ctr.ctr7.ctr.xpress6.ts->ctr6;
 505                 }
 506
 507                 if (out_level == 1) {
 508                         DEBUG(1,("end[%d] tmp_highest_usn: %llu , highest_usn: %llu\n",y,
 509                                 (long long)ctr1->new_highwatermark.tmp_highest_usn,
 510                                 (long long)ctr1->new_highwatermark.highest_usn));
 511
 512                         first_object = ctr1->first_object;
 513                         mapping_ctr = &ctr1->mapping_ctr;
 514
 515                         if (ctr1->more_data) {
 516                                 req->req5.highwatermark = ctr1->new_highwatermark;
 517                         } else {
 518                                 last_query = true;
 519                                 if (ctr1->uptodateness_vector &&
 520                                     !ctx->single_object_replication)
 521                                 {
 522                                         new_utdv->version = 1;
 523                                         new_utdv->ctr.ctr1.count =
 524                                                 ctr1->uptodateness_vector->count;
 525                                         new_utdv->ctr.ctr1.cursors =
 526                                                 ctr1->uptodateness_vector->cursors;
 527                                 }
 528                         }
 529                 } else if (out_level == 6) {
 530                         DEBUG(1,("end[%d] tmp_highest_usn: %llu , highest_usn: %llu\n",y,
 531                                 (long long)ctr6->new_highwatermark.tmp_highest_usn,
 532                                 (long long)ctr6->new_highwatermark.highest_usn));
 533
 534                         first_object = ctr6->first_object;
 535                         mapping_ctr = &ctr6->mapping_ctr;
 536
 537                         if (ctr6->more_data) {
 538                                 req->req8.highwatermark = ctr6->new_highwatermark;
 539                         } else {
 540                                 last_query = true;
 541                                 if (ctr6->uptodateness_vector &&
 542                                     !ctx->single_object_replication)
 543                                 {
 544                                         new_utdv->version = 2;
 545                                         new_utdv->ctr.ctr2.count =
 546                                                 ctr6->uptodateness_vector->count;
 547                                         new_utdv->ctr.ctr2.cursors =
 548                                                 ctr6->uptodateness_vector->cursors;
 549                                 }
 550                         }
 551                 }
 552
 553                 status = cli_get_session_key(mem_ctx, ctx->cli, &ctx->session_key);
 554                 if (!NT_STATUS_IS_OK(status)) {
 555                         ctx->error_message = talloc_asprintf(ctx,
 556                                 "Failed to get Session Key: %s",
 557                                 nt_errstr(status));
 558                         goto out;
 559                 }
 560
 561                 libnet_dssync_decrypt_attributes(mem_ctx,
 562                                                  &ctx->session_key,
 563                                                  first_object);
 564
 565                 if (ctx->ops->process_objects) {
 566                         status = ctx->ops->process_objects(ctx, mem_ctx,
 567                                                            first_object,
 568                                                            mapping_ctr);
 569                         if (!NT_STATUS_IS_OK(status)) {
 570                                 ctx->error_message = talloc_asprintf(ctx,
 571                                         "Failed to call processing function: %s",
 572                                         nt_errstr(status));
 573                                 goto out;
 574                         }
 575                 }
 576         }
 577
 578         *pnew_utdv = new_utdv;
 579
 580 out:
 581         return status;
 582 }
 583
 584 static NTSTATUS libnet_dssync_process(TALLOC_CTX *mem_ctx,
 585                                       struct dssync_context *ctx)
 586 {
 587         NTSTATUS status;
 588
 589         uint32_t level = 0;
 590         union drsuapi_DsGetNCChangesRequest req;
 591         struct replUpToDateVectorBlob *old_utdv = NULL;
 592         struct replUpToDateVectorBlob *pnew_utdv = NULL;
 593         const char **dns;
 594         uint32_t dn_count;
 595         uint32_t count;
 596
 597         if (ctx->ops->startup) {
 598                 status = ctx->ops->startup(ctx, mem_ctx, &old_utdv);
 599                 if (!NT_STATUS_IS_OK(status)) {
 600                         ctx->error_message = talloc_asprintf(ctx,
 601                                 "Failed to call startup operation: %s",
 602                                 nt_errstr(status));
 603                         goto out;
 604                 }
 605         }
 606
 607         if (ctx->single_object_replication && ctx->object_dns) {
 608                 dns = ctx->object_dns;
 609                 dn_count = ctx->object_count;
 610         } else {
 611                 dns = &ctx->nc_dn;
 612                 dn_count = 1;
 613         }
 614
 615         status = NT_STATUS_OK;
 616
 617         for (count=0; count < dn_count; count++) {
 618                 status = libnet_dssync_build_request(mem_ctx, ctx,
 619                                                      dns[count],
 620                                                      old_utdv, &level,
 621                                                      &req);
 622                 if (!NT_STATUS_IS_OK(status)) {
 623                         goto out;
 624                 }
 625
 626                 status = libnet_dssync_getncchanges(mem_ctx, ctx, level, &req,
 627                                                     &pnew_utdv);
 628                 if (!NT_STATUS_IS_OK(status)) {
 629                         ctx->error_message = talloc_asprintf(ctx,
 630                                 "Failed to call DsGetNCCHanges: %s",
 631                                 nt_errstr(status));
 632                         goto out;
 633                 }
 634         }
 635
 636         if (ctx->ops->finish) {
 637                 status = ctx->ops->finish(ctx, mem_ctx, pnew_utdv);
 638                 if (!NT_STATUS_IS_OK(status)) {
 639                         ctx->error_message = talloc_asprintf(ctx,
 640                                 "Failed to call finishing operation: %s",
 641                                 nt_errstr(status));
 642                         goto out;
 643                 }
 644         }
 645
 646  out:
 647         return status;
 648 }
 649
 650 /****************************************************************
 651 ****************************************************************/
 652
 653 NTSTATUS libnet_dssync(TALLOC_CTX *mem_ctx,
 654                        struct dssync_context *ctx)
 655 {
 656         NTSTATUS status;
 657         TALLOC_CTX *tmp_ctx;
 658
 659         tmp_ctx = talloc_new(mem_ctx);
 660         if (!tmp_ctx) {
 661                 return NT_STATUS_NO_MEMORY;
 662         }
 663
 664         status = libnet_dssync_init(tmp_ctx, ctx);
 665         if (!NT_STATUS_IS_OK(status)) {
 666                 goto out;
 667         }
 668
 669         status = libnet_dssync_process(tmp_ctx, ctx);
 670         if (!NT_STATUS_IS_OK(status)) {
 671                 goto out;
 672         }
 673
 674  out:
 675         TALLOC_FREE(tmp_ctx);
 676         return status;
 677 }
 678