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