source4/dsdb/samdb/ldb_modules/partition_init.c

   1 /*
   2    Partitions ldb module
   3
   4    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2006
   5    Copyright (C) Stefan Metzmacher <metze@samba.org> 2007
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 /*
  22  *  Name: ldb
  23  *
  24  *  Component: ldb partitions module
  25  *
  26  *  Description: Implement LDAP partitions
  27  *
  28  *  Author: Andrew Bartlett
  29  *  Author: Stefan Metzmacher
  30  */
  31
  32 #include "dsdb/samdb/ldb_modules/partition.h"
  33 static int partition_sort_compare(const void *v1, const void *v2)
  34 {
  35         const struct dsdb_partition *p1;
  36         const struct dsdb_partition *p2;
  37
  38         p1 = *((struct dsdb_partition * const*)v1);
  39         p2 = *((struct dsdb_partition * const*)v2);
  40
  41         return ldb_dn_compare(p1->ctrl->dn, p2->ctrl->dn);
  42 }
  43
  44 /* Load the list of DNs that we must replicate to all partitions */
  45 static int partition_load_replicate_dns(struct ldb_context *ldb, struct partition_private_data *data, struct ldb_message *msg)
  46 {
  47         struct ldb_message_element *replicate_attributes = ldb_msg_find_element(msg, "replicateEntries");
  48
  49         talloc_free(data->replicate);
  50         if (!replicate_attributes) {
  51                 data->replicate = NULL;
  52         } else {
  53                 int i;
  54                 data->replicate = talloc_array(data, struct ldb_dn *, replicate_attributes->num_values + 1);
  55                 if (!data->replicate) {
  56                         return LDB_ERR_OPERATIONS_ERROR;
  57                 }
  58
  59                 for (i=0; i < replicate_attributes->num_values; i++) {
  60                         data->replicate[i] = ldb_dn_from_ldb_val(data->replicate, ldb, &replicate_attributes->values[i]);
  61                         if (!ldb_dn_validate(data->replicate[i])) {
  62                                 ldb_asprintf_errstring(ldb,
  63                                                         "partition_init: "
  64                                                         "invalid DN in partition replicate record: %s",
  65                                                         replicate_attributes->values[i].data);
  66                                 return LDB_ERR_CONSTRAINT_VIOLATION;
  67                         }
  68                 }
  69                 data->replicate[i] = NULL;
  70         }
  71         return LDB_SUCCESS;
  72 }
  73
  74 /* Load the list of modules for the partitions */
  75 static int partition_load_modules(struct ldb_context *ldb,
  76                                   struct partition_private_data *data, struct ldb_message *msg)
  77 {
  78         int i;
  79         struct ldb_message_element *modules_attributes = ldb_msg_find_element(msg, "modules");
  80         talloc_free(data->modules);
  81         if (!modules_attributes) {
  82                 return LDB_SUCCESS;
  83         }
  84
  85         data->modules = talloc_array(data, struct partition_module *, modules_attributes->num_values + 1);
  86         if (!data->modules) {
  87                 ldb_oom(ldb);
  88                 return LDB_ERR_OPERATIONS_ERROR;
  89         }
  90
  91         for (i=0; i < modules_attributes->num_values; i++) {
  92                 char *p;
  93                 DATA_BLOB dn_blob;
  94                 data->modules[i] = talloc(data->modules, struct partition_module);
  95                 if (!data->modules[i]) {
  96                         ldb_oom(ldb);
  97                         return LDB_ERR_OPERATIONS_ERROR;
  98                 }
  99
 100                 dn_blob = modules_attributes->values[i];
 101
 102                 p = strchr((const char *)dn_blob.data, ':');
 103                 if (!p) {
 104                         ldb_asprintf_errstring(ldb,
 105                                                "partition_load_modules: "
 106                                                "invalid form for partition module record (missing ':'): %s", (const char *)dn_blob.data);
 107                         return LDB_ERR_CONSTRAINT_VIOLATION;
 108                 }
 109                 /* Now trim off the filename */
 110                 dn_blob.length = ((uint8_t *)p - dn_blob.data);
 111
 112                 p++;
 113                 data->modules[i]->modules = ldb_modules_list_from_string(ldb, data->modules[i],
 114                                                                          p);
 115
 116                 if (dn_blob.length == 1 && dn_blob.data[0] == '*') {
 117                         data->modules[i]->dn = NULL;
 118                 } else {
 119                         data->modules[i]->dn = ldb_dn_from_ldb_val(data->modules[i], ldb, &dn_blob);
 120                         if (!data->modules[i]->dn || !ldb_dn_validate(data->modules[i]->dn)) {
 121                                 return LDB_ERR_OPERATIONS_ERROR;
 122                         }
 123                 }
 124         }
 125         data->modules[i] = NULL;
 126         return LDB_SUCCESS;
 127 }
 128
 129 static int partition_reload_metadata(struct ldb_module *module, struct partition_private_data *data, TALLOC_CTX *mem_ctx, struct ldb_message **_msg)
 130 {
 131         int ret;
 132         struct ldb_message *msg;
 133         struct ldb_result *res;
 134         struct ldb_context *ldb = ldb_module_get_ctx(module);
 135         const char *attrs[] = { "partition", "replicateEntries", "modules", NULL };
 136         /* perform search for @PARTITION, looking for module, replicateEntries and ldapBackend */
 137         ret = dsdb_module_search_dn(module, mem_ctx, &res,
 138                                     ldb_dn_new(mem_ctx, ldb, DSDB_PARTITION_DN),
 139                                     attrs);
 140         if (ret != LDB_SUCCESS) {
 141                 return ret;
 142         }
 143
 144         msg = res->msgs[0];
 145
 146         ret = partition_load_replicate_dns(ldb, data, msg);
 147         if (ret != LDB_SUCCESS) {
 148                 return ret;
 149         }
 150
 151         ret = partition_load_modules(ldb, data, msg);
 152         if (ret != LDB_SUCCESS) {
 153                 return ret;
 154         }
 155
 156         data->ldapBackend = talloc_steal(data, ldb_msg_find_attr_as_string(msg, "ldapBackend", NULL));
 157         if (_msg) {
 158                 *_msg = msg;
 159         } else {
 160                 talloc_free(msg);
 161         }
 162
 163         return LDB_SUCCESS;
 164 }
 165
 166 static const char **find_modules_for_dn(struct partition_private_data *data, struct ldb_dn *dn)
 167 {
 168         int i;
 169         struct partition_module *default_mod = NULL;
 170         for (i=0; data->modules && data->modules[i]; i++) {
 171                 if (!data->modules[i]->dn) {
 172                         default_mod = data->modules[i];
 173                 } else if (ldb_dn_compare(dn, data->modules[i]->dn) == 0) {
 174                         return data->modules[i]->modules;
 175                 }
 176         }
 177         if (default_mod) {
 178                 return default_mod->modules;
 179         } else {
 180                 return NULL;
 181         }
 182 }
 183
 184 static int new_partition_from_dn(struct ldb_context *ldb, struct partition_private_data *data,
 185                                  TALLOC_CTX *mem_ctx,
 186                                  struct ldb_dn *dn, const char *filename_base,
 187                                  struct dsdb_partition **partition) {
 188         const char *backend_url;
 189         struct dsdb_control_current_partition *ctrl;
 190         struct ldb_module *backend_module;
 191         const char **modules;
 192         int ret;
 193
 194         (*partition) = talloc(mem_ctx, struct dsdb_partition);
 195         if (!*partition) {
 196                 return LDB_ERR_OPERATIONS_ERROR;
 197         }
 198
 199         (*partition)->ctrl = ctrl = talloc((*partition), struct dsdb_control_current_partition);
 200         if (!ctrl) {
 201                 talloc_free(*partition);
 202                 ldb_oom(ldb);
 203                 return LDB_ERR_OPERATIONS_ERROR;
 204         }
 205
 206         /* See if an LDAP backend has been specified */
 207         if (data->ldapBackend) {
 208                 backend_url = data->ldapBackend;
 209         } else {
 210
 211                 /* the backend LDB is the DN (base64 encoded if not 'plain') followed by .ldb */
 212                 const char *p;
 213                 char *backend_path;
 214                 char *base64_dn = NULL;
 215                 for (p = filename_base; *p; p++) {
 216                         /* We have such a strict check because I don't want shell metacharacters in the file name, nor ../ */
 217                         if (!(isalnum(*p) || *p == ' ' || *p == '=' || *p == ',')) {
 218                                 break;
 219                         }
 220                 }
 221                 if (*p) {
 222                         filename_base = base64_dn = ldb_base64_encode(data, filename_base, strlen(filename_base));
 223                 }
 224
 225                 backend_path = samdb_relative_path(ldb,
 226                                                    *partition,
 227                                                    filename_base);
 228                 if (base64_dn) {
 229                         talloc_free(base64_dn);
 230                 }
 231                 if (!backend_path) {
 232                         ldb_asprintf_errstring(ldb,
 233                                                "partition_init: unable to determine an relative path for partition: %s", filename_base);
 234                         talloc_free(*partition);
 235                         return LDB_ERR_OPERATIONS_ERROR;
 236                 }
 237                 backend_url = talloc_asprintf(*partition, "tdb://%s.ldb",
 238                                               backend_path);
 239                 talloc_free(backend_path);
 240                 if (!backend_url) {
 241                         ldb_oom(ldb);
 242                         talloc_free(*partition);
 243                         return LDB_ERR_OPERATIONS_ERROR;
 244                 }
 245         }
 246
 247         (*partition)->backend_url = backend_url;
 248         ctrl->version = DSDB_CONTROL_CURRENT_PARTITION_VERSION;
 249         ctrl->dn = talloc_steal(ctrl, dn);
 250
 251         ret = ldb_connect_backend(ldb, backend_url, NULL, &backend_module);
 252         if (ret != LDB_SUCCESS) {
 253                 return ret;
 254         }
 255         talloc_steal((*partition), backend_module);
 256
 257         modules = find_modules_for_dn(data, dn);
 258
 259         if (!modules) {
 260                 DEBUG(0, ("Unable to load partition modules for new DN %s, perhaps you need to reprovision?  See partition-upgrade.txt for instructions\n", ldb_dn_get_linearized(dn)));
 261                 talloc_free(*partition);
 262                 return LDB_ERR_CONSTRAINT_VIOLATION;
 263         }
 264         ret = ldb_load_modules_list(ldb, modules, backend_module, &(*partition)->module);
 265         if (ret != LDB_SUCCESS) {
 266                 ldb_asprintf_errstring(ldb,
 267                                        "partition_init: "
 268                                        "loading backend for %s failed: %s",
 269                                        ldb_dn_get_linearized(dn), ldb_errstring(ldb));
 270                 talloc_free(*partition);
 271                 return ret;
 272         }
 273         ret = ldb_init_module_chain(ldb, (*partition)->module);
 274         if (ret != LDB_SUCCESS) {
 275                 ldb_asprintf_errstring(ldb,
 276                                        "partition_init: "
 277                                        "initialising backend for %s failed: %s",
 278                                        ldb_dn_get_linearized(dn), ldb_errstring(ldb));
 279                 talloc_free(*partition);
 280                 return ret;
 281         }
 282
 283         talloc_steal((*partition), (*partition)->module);
 284
 285         return ret;
 286 }
 287
 288 /* Tell the rootDSE about the new partition */
 289 static int partition_register(struct ldb_context *ldb, struct dsdb_control_current_partition *ctrl)
 290 {
 291         struct ldb_request *req;
 292         int ret;
 293
 294         req = talloc_zero(NULL, struct ldb_request);
 295         if (req == NULL) {
 296                 ldb_oom(ldb);
 297                 return LDB_ERR_OPERATIONS_ERROR;
 298         }
 299
 300         req->operation = LDB_REQ_REGISTER_PARTITION;
 301         req->op.reg_partition.dn = ctrl->dn;
 302         req->callback = ldb_op_default_callback;
 303
 304         ldb_set_timeout(ldb, req, 0);
 305
 306         req->handle = ldb_handle_new(req, ldb);
 307         if (req->handle == NULL) {
 308                 talloc_free(req);
 309                 return LDB_ERR_OPERATIONS_ERROR;
 310         }
 311
 312         ret = ldb_request(ldb, req);
 313         if (ret == LDB_SUCCESS) {
 314                 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
 315         }
 316         if (ret != LDB_SUCCESS) {
 317                 ldb_debug(ldb, LDB_DEBUG_ERROR, "partition: Unable to register partition with rootdse!\n");
 318                 talloc_free(req);
 319                 return LDB_ERR_OTHER;
 320         }
 321         talloc_free(req);
 322
 323         return LDB_SUCCESS;
 324 }
 325
 326 /* Add a newly found partition to the global data */
 327 static int add_partition_to_data(struct ldb_context *ldb, struct partition_private_data *data,
 328                                  struct dsdb_partition *partition)
 329 {
 330         int i, ret;
 331         /* Count the partitions */
 332         for (i=0; data->partitions && data->partitions[i]; i++) { /* noop */};
 333
 334         /* Add partition to list of partitions */
 335         data->partitions = talloc_realloc(data, data->partitions, struct dsdb_partition *, i + 2);
 336         if (!data->partitions) {
 337                 ldb_oom(ldb);
 338                 return LDB_ERR_OPERATIONS_ERROR;
 339         }
 340         data->partitions[i] = talloc_steal(data->partitions, partition);
 341         data->partitions[i+1] = NULL;
 342
 343         /* Sort again (should use binary insert) */
 344         qsort(data->partitions, i+1,
 345               sizeof(*data->partitions), partition_sort_compare);
 346
 347         ret = partition_register(ldb, partition->ctrl);
 348         if (ret != LDB_SUCCESS) {
 349                 return ret;
 350         }
 351         return LDB_SUCCESS;
 352 }
 353
 354 int partition_reload_if_required(struct ldb_module *module,
 355                                  struct partition_private_data *data)
 356 {
 357         uint64_t seq;
 358         int ret, i;
 359         struct ldb_context *ldb = ldb_module_get_ctx(module);
 360         struct ldb_message *msg;
 361         struct ldb_message_element *partition_attributes;
 362         TALLOC_CTX *mem_ctx;
 363
 364         if (!data) {
 365                 /* Not initilised yet */
 366                 return LDB_SUCCESS;
 367         }
 368
 369         mem_ctx = talloc_new(data);
 370         if (!mem_ctx) {
 371                 ldb_oom(ldb);
 372                 return LDB_ERR_OPERATIONS_ERROR;
 373         }
 374
 375         ret = partition_primary_sequence_number(module, mem_ctx, LDB_SEQ_HIGHEST_SEQ, &seq);
 376         if (ret != LDB_SUCCESS) {
 377                 talloc_free(mem_ctx);
 378                 return ret;
 379         }
 380         if (seq == data->metadata_seq) {
 381                 talloc_free(mem_ctx);
 382                 return LDB_SUCCESS;
 383         }
 384
 385         ret = partition_reload_metadata(module, data, mem_ctx, &msg);
 386         if (ret != LDB_SUCCESS) {
 387                 talloc_free(mem_ctx);
 388                 return ret;
 389         }
 390
 391         data->metadata_seq = seq;
 392
 393         partition_attributes = ldb_msg_find_element(msg, "partition");
 394
 395         for (i=0; partition_attributes && i < partition_attributes->num_values; i++) {
 396                 int j;
 397                 bool new_partition = true;
 398                 const char *filename_base = NULL;
 399                 DATA_BLOB dn_blob;
 400                 struct ldb_dn *dn;
 401                 struct dsdb_partition *partition;
 402                 struct ldb_module tmp_module;
 403                 struct ldb_result *dn_res;
 404                 const char *no_attrs[] = { NULL };
 405
 406                 for (j=0; data->partitions && data->partitions[j]; j++) {
 407                         DATA_BLOB casefold = data_blob_string_const(ldb_dn_get_casefold(data->partitions[j]->ctrl->dn));
 408                         if (data_blob_cmp(&casefold, &partition_attributes->values[i]) == 0) {
 409                                 new_partition = false;
 410                                 break;
 411                         }
 412                 }
 413                 if (new_partition == false) {
 414                         continue;
 415                 }
 416
 417                 dn_blob = partition_attributes->values[i];
 418
 419                 if (dn_blob.length > 4 &&
 420                     (strncmp((const char *)&dn_blob.data[dn_blob.length-4], ".ldb", 4) == 0)) {
 421
 422                         /* Look for DN:filename.ldb */
 423                         char *p = strchr((const char *)dn_blob.data, ':');
 424                         if (!p) {
 425                                 ldb_asprintf_errstring(ldb,
 426                                                        "partition_init: invalid DN in attempting to parse old-style partition record: %s", (const char *)dn_blob.data);
 427                                 talloc_free(mem_ctx);
 428                                 return LDB_ERR_CONSTRAINT_VIOLATION;
 429                         }
 430                         filename_base = p+1;
 431
 432                         /* Trim off the .ldb */
 433                         dn_blob.data[dn_blob.length-4] = '\0';
 434
 435                         /* Now trim off the filename */
 436                         dn_blob.length = ((uint8_t *)p - dn_blob.data);
 437                 }
 438
 439                 dn = ldb_dn_from_ldb_val(mem_ctx, ldb, &dn_blob);
 440                 if (!dn) {
 441                         ldb_asprintf_errstring(ldb,
 442                                                "partition_init: invalid DN in partition record: %s", (const char *)dn_blob.data);
 443                         talloc_free(mem_ctx);
 444                         return LDB_ERR_CONSTRAINT_VIOLATION;
 445                 }
 446
 447                 if (!filename_base) {
 448                         filename_base = ldb_dn_get_linearized(dn);
 449                 }
 450
 451                 /* We call ldb_dn_get_linearized() because the DN in
 452                  * partition_attributes is already casefolded
 453                  * correctly.  We don't want to mess that up as the
 454                  * schema isn't loaded yet */
 455                 ret = new_partition_from_dn(ldb, data, data->partitions, dn,
 456                                             filename_base,
 457                                             &partition);
 458                 if (ret != LDB_SUCCESS) {
 459                         talloc_free(mem_ctx);
 460                         return ret;
 461                 }
 462
 463                 /* Hack to be able to re-use dsdb_module_search_dn, which calls ldb_next_request(), which needs ->next filled out */
 464                 tmp_module = *partition->module;
 465                 tmp_module.next = partition->module;
 466
 467                 /* Get the 'correct' case of the partition DNs from the database */
 468                 ret = dsdb_module_search_dn(&tmp_module, data, &dn_res,
 469                                             dn, no_attrs);
 470                 if (ret == LDB_SUCCESS) {
 471                         talloc_free(partition->ctrl->dn);
 472                         partition->ctrl->dn = talloc_steal(partition->ctrl, dn_res->msgs[0]->dn);
 473                         talloc_free(dn_res);
 474                 } else if (ret != LDB_ERR_NO_SUCH_OBJECT) {
 475                         ldb_asprintf_errstring(ldb,
 476                                                "Failed to search for partition base %s in new partition at %s: %s",
 477                                                ldb_dn_get_linearized(dn),
 478                                                partition->backend_url,
 479                                                ldb_errstring(ldb));
 480                         talloc_free(mem_ctx);
 481                         return ret;
 482                 }
 483
 484                 ret = add_partition_to_data(ldb, data, partition);
 485                 if (ret != LDB_SUCCESS) {
 486                         talloc_free(mem_ctx);
 487                         return ret;
 488                 }
 489         }
 490
 491         talloc_free(mem_ctx);
 492         return LDB_SUCCESS;
 493 }
 494
 495 /* Copy the metadata (@OPTIONS etc) for the new partition into the partition */
 496
 497 static int new_partition_set_replicated_metadata(struct ldb_context *ldb,
 498                                                  struct ldb_module *module, struct ldb_request *last_req,
 499                                                  struct partition_private_data *data,
 500                                                  struct dsdb_partition *partition)
 501 {
 502         int i, ret;
 503         /* for each replicate, copy from main partition.  If we get an error, we report it up the chain */
 504         for (i=0; data->replicate && data->replicate[i]; i++) {
 505                 struct ldb_result *replicate_res;
 506                 struct ldb_request *add_req;
 507                 ret = dsdb_module_search_dn(module, last_req, &replicate_res,
 508                                             data->replicate[i],
 509                                             NULL);
 510                 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
 511                         continue;
 512                 }
 513                 if (ret != LDB_SUCCESS) {
 514                         ldb_asprintf_errstring(ldb,
 515                                                "Failed to search for %s from " DSDB_PARTITION_DN
 516                                                " replicateEntries for new partition at %s on %s: %s",
 517                                                ldb_dn_get_linearized(data->replicate[i]),
 518                                                partition->backend_url,
 519                                                ldb_dn_get_linearized(partition->ctrl->dn),
 520                                                ldb_errstring(ldb));
 521                         return ret;
 522                 }
 523
 524                 /* Build add request */
 525                 ret = ldb_build_add_req(&add_req, ldb, replicate_res,
 526                                         replicate_res->msgs[0], NULL, NULL,
 527                                         ldb_op_default_callback, last_req);
 528                 last_req = add_req;
 529                 if (ret != LDB_SUCCESS) {
 530                         /* return directly, this is a very unlikely error */
 531                         return ret;
 532                 }
 533                 /* do request */
 534                 ret = partition_request(partition->module, add_req);
 535                 /* wait */
 536                 if (ret == LDB_SUCCESS) {
 537                         ret = ldb_wait(add_req->handle, LDB_WAIT_ALL);
 538                 }
 539
 540                 switch (ret) {
 541                 case LDB_SUCCESS:
 542                         break;
 543
 544                 case LDB_ERR_ENTRY_ALREADY_EXISTS:
 545                         /* Handle this case specially - if the
 546                          * metadata already exists, replace it */
 547                 {
 548                         struct ldb_request *del_req;
 549
 550                         /* Don't leave a confusing string in the ldb_errstring() */
 551                         ldb_reset_err_string(ldb);
 552                         /* Build del request */
 553                         ret = ldb_build_del_req(&del_req, ldb, replicate_res, replicate_res->msgs[0]->dn, NULL, NULL,
 554                                                 ldb_op_default_callback, last_req);
 555                         last_req = del_req;
 556                         if (ret != LDB_SUCCESS) {
 557                                 /* return directly, this is a very unlikely error */
 558                                 return ret;
 559                         }
 560                         /* do request */
 561                         ret = partition_request(partition->module, del_req);
 562
 563                         /* wait */
 564                         if (ret == LDB_SUCCESS) {
 565                                 ret = ldb_wait(del_req->handle, LDB_WAIT_ALL);
 566                         }
 567                         if (ret != LDB_SUCCESS) {
 568                                 ldb_asprintf_errstring(ldb,
 569                                                        "Failed to delete  (for re-add) %s from " DSDB_PARTITION_DN
 570                                                        " replicateEntries in new partition at %s on %s: %s",
 571                                                        ldb_dn_get_linearized(data->replicate[i]),
 572                                                        partition->backend_url,
 573                                                        ldb_dn_get_linearized(partition->ctrl->dn),
 574                                                        ldb_errstring(ldb));
 575                                 return ret;
 576                         }
 577
 578                         /* Build add request */
 579                         ret = ldb_build_add_req(&add_req, ldb, replicate_res, replicate_res->msgs[0], NULL, NULL,
 580                                                 ldb_op_default_callback, last_req);
 581                         last_req = add_req;
 582                         if (ret != LDB_SUCCESS) {
 583                                 /* return directly, this is a very unlikely error */
 584                                 return ret;
 585                         }
 586
 587                         /* do the add again */
 588                         ret = partition_request(partition->module, add_req);
 589
 590                         /* wait */
 591                         if (ret == LDB_SUCCESS) {
 592                                 ret = ldb_wait(add_req->handle, LDB_WAIT_ALL);
 593                         }
 594
 595                         if (ret != LDB_SUCCESS) {
 596                                 ldb_asprintf_errstring(ldb,
 597                                                        "Failed to add (after delete) %s from " DSDB_PARTITION_DN
 598                                                        " replicateEntries to new partition at %s on %s: %s",
 599                                                        ldb_dn_get_linearized(data->replicate[i]),
 600                                                        partition->backend_url,
 601                                                        ldb_dn_get_linearized(partition->ctrl->dn),
 602                                                        ldb_errstring(ldb));
 603                                 return ret;
 604                         }
 605                         break;
 606                 }
 607                 default:
 608                 {
 609                         ldb_asprintf_errstring(ldb,
 610                                                "Failed to add %s from " DSDB_PARTITION_DN
 611                                                " replicateEntries to new partition at %s on %s: %s",
 612                                                ldb_dn_get_linearized(data->replicate[i]),
 613                                                partition->backend_url,
 614                                                ldb_dn_get_linearized(partition->ctrl->dn),
 615                                                ldb_errstring(ldb));
 616                         return ret;
 617                 }
 618                 }
 619
 620                 /* And around again, for the next thing we must merge */
 621         }
 622         return LDB_SUCCESS;
 623 }
 624
 625 /* Extended operation to create a new partition, called when
 626  * 'new_partition' detects that one is being added based on it's
 627  * instanceType */
 628 int partition_create(struct ldb_module *module, struct ldb_request *req)
 629 {
 630         int i, ret;
 631         struct ldb_context *ldb = ldb_module_get_ctx(module);
 632         struct ldb_request *mod_req, *last_req = req;
 633         struct ldb_message *mod_msg;
 634         struct partition_private_data *data;
 635         struct dsdb_partition *partition = NULL;
 636         const char *casefold_dn;
 637         bool new_partition = false;
 638
 639         /* Check if this is already a partition */
 640
 641         struct dsdb_create_partition_exop *ex_op = talloc_get_type(req->op.extended.data, struct dsdb_create_partition_exop);
 642         struct ldb_dn *dn = ex_op->new_dn;
 643
 644         data = talloc_get_type(module->private_data, struct partition_private_data);
 645         if (!data) {
 646                 /* We are not going to create a partition before we are even set up */
 647                 return LDB_ERR_UNWILLING_TO_PERFORM;
 648         }
 649
 650         for (i=0; data->partitions && data->partitions[i]; i++) {
 651                 if (ldb_dn_compare(data->partitions[i]->ctrl->dn, dn) == 0) {
 652                         partition = data->partitions[i];
 653                 }
 654         }
 655
 656         if (!partition) {
 657                 new_partition = true;
 658                 mod_msg = ldb_msg_new(req);
 659                 if (!mod_msg) {
 660                         ldb_oom(ldb);
 661                         return LDB_ERR_OPERATIONS_ERROR;
 662                 }
 663
 664                 mod_msg->dn = ldb_dn_new(mod_msg, ldb, DSDB_PARTITION_DN);
 665                 ret = ldb_msg_add_empty(mod_msg, DSDB_PARTITION_ATTR, LDB_FLAG_MOD_ADD, NULL);
 666                 if (ret != LDB_SUCCESS) {
 667                         return ret;
 668                 }
 669
 670                 casefold_dn = ldb_dn_get_casefold(dn);
 671
 672                 ret = ldb_msg_add_string(mod_msg, DSDB_PARTITION_ATTR, casefold_dn);
 673                 if (ret != LDB_SUCCESS) {
 674                         return ret;
 675                 }
 676
 677                 /* Perform modify on @PARTITION record */
 678                 ret = ldb_build_mod_req(&mod_req, ldb, req, mod_msg, NULL, NULL,
 679                                         ldb_op_default_callback, req);
 680
 681                 if (ret != LDB_SUCCESS) {
 682                         return ret;
 683                 }
 684
 685                 last_req = mod_req;
 686
 687                 ret = partition_request(module, mod_req);
 688                 if (ret == LDB_SUCCESS) {
 689                         ret = ldb_wait(mod_req->handle, LDB_WAIT_ALL);
 690                 }
 691
 692                 if (ret != LDB_SUCCESS) {
 693                         return ret;
 694                 }
 695
 696                 /* Make a partition structure for this new partition, so we can copy in the template structure */
 697                 ret = new_partition_from_dn(ldb, data, req, ldb_dn_copy(req, dn), casefold_dn, &partition);
 698                 if (ret != LDB_SUCCESS) {
 699                         return ret;
 700                 }
 701
 702                 /* Start a transaction on the DB (as it won't be in one being brand new) */
 703                 {
 704                         struct ldb_module *next = partition->module;
 705                         PARTITION_FIND_OP(next, start_transaction);
 706
 707                         ret = next->ops->start_transaction(next);
 708                         if (ret != LDB_SUCCESS) {
 709                                 return ret;
 710                         }
 711                 }
 712         }
 713
 714         ret = new_partition_set_replicated_metadata(ldb, module, last_req, data, partition);
 715         if (ret != LDB_SUCCESS) {
 716                 return ret;
 717         }
 718
 719         if (new_partition) {
 720                 ret = add_partition_to_data(ldb, data, partition);
 721                 if (ret != LDB_SUCCESS) {
 722                         return ret;
 723                 }
 724         }
 725
 726         /* send request done */
 727         return ldb_module_done(req, NULL, NULL, LDB_SUCCESS);
 728 }
 729
 730
 731 int partition_init(struct ldb_module *module)
 732 {
 733         int ret;
 734         TALLOC_CTX *mem_ctx = talloc_new(module);
 735
 736         struct partition_private_data *data;
 737
 738         if (!mem_ctx) {
 739                 return LDB_ERR_OPERATIONS_ERROR;
 740         }
 741
 742         data = talloc_zero(mem_ctx, struct partition_private_data);
 743         if (data == NULL) {
 744                 return LDB_ERR_OPERATIONS_ERROR;
 745         }
 746
 747         /* This loads the partitions */
 748         ret = partition_reload_if_required(module, data);
 749         if (ret != LDB_SUCCESS) {
 750                 return ret;
 751         }
 752
 753         module->private_data = talloc_steal(module, data);
 754         talloc_free(mem_ctx);
 755
 756         ret = ldb_mod_register_control(module, LDB_CONTROL_DOMAIN_SCOPE_OID);
 757         if (ret != LDB_SUCCESS) {
 758                 ldb_debug(ldb_module_get_ctx(module), LDB_DEBUG_ERROR,
 759                         "partition: Unable to register control with rootdse!\n");
 760                 return LDB_ERR_OPERATIONS_ERROR;
 761         }
 762
 763         ret = ldb_mod_register_control(module, LDB_CONTROL_SEARCH_OPTIONS_OID);
 764         if (ret != LDB_SUCCESS) {
 765                 ldb_debug(ldb_module_get_ctx(module), LDB_DEBUG_ERROR,
 766                         "partition: Unable to register control with rootdse!\n");
 767                 return LDB_ERR_OPERATIONS_ERROR;
 768         }
 769
 770         return ldb_next_init(module);
 771 }