source4/dsdb/samdb/ldb_modules/schema_data.c

   1 /*
   2    Unix SMB/CIFS mplementation.
   3
   4    The module that handles the Schema checkings and dynamic attributes
   5
   6    Copyright (C) Stefan Metzmacher <metze@samba.org> 2007
   7    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2009
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21
  22 */
  23
  24 #include "includes.h"
  25 #include "ldb_module.h"
  26 #include "dsdb/samdb/samdb.h"
  27 #include "librpc/gen_ndr/ndr_misc.h"
  28 #include "librpc/gen_ndr/ndr_drsuapi.h"
  29 #include "librpc/gen_ndr/ndr_drsblobs.h"
  30 #include "param/param.h"
  31 #include "dsdb/samdb/ldb_modules/util.h"
  32
  33 static int generate_objectClasses(struct ldb_context *ldb, struct ldb_message *msg,
  34                                   const struct dsdb_schema *schema);
  35 static int generate_attributeTypes(struct ldb_context *ldb, struct ldb_message *msg,
  36                                    const struct dsdb_schema *schema);
  37 static int generate_dITContentRules(struct ldb_context *ldb, struct ldb_message *msg,
  38                                     const struct dsdb_schema *schema);
  39 static int generate_extendedAttributeInfo(struct ldb_context *ldb, struct ldb_message *msg,
  40                                           const struct dsdb_schema *schema);
  41 static int generate_extendedClassInfo(struct ldb_context *ldb, struct ldb_message *msg,
  42                                       const struct dsdb_schema *schema);
  43 static int generate_possibleInferiors(struct ldb_context *ldb, struct ldb_message *msg,
  44                                       const struct dsdb_schema *schema);
  45
  46 static const struct {
  47         const char *attr;
  48         int (*fn)(struct ldb_context *, struct ldb_message *, const struct dsdb_schema *);
  49         bool aggregate;
  50 } generated_attrs[] = {
  51         {
  52                 .attr = "objectClasses",
  53                 .fn = generate_objectClasses,
  54                 .aggregate = true,
  55         },
  56         {
  57                 .attr = "attributeTypes",
  58                 .fn = generate_attributeTypes,
  59                 .aggregate = true,
  60         },
  61         {
  62                 .attr = "dITContentRules",
  63                 .fn = generate_dITContentRules,
  64                 .aggregate = true,
  65         },
  66         {
  67                 .attr = "extendedAttributeInfo",
  68                 .fn = generate_extendedAttributeInfo,
  69                 .aggregate = true,
  70         },
  71         {
  72                 .attr = "extendedClassInfo",
  73                 .fn = generate_extendedClassInfo,
  74                 .aggregate = true,
  75         },
  76         {
  77                 .attr = "possibleInferiors",
  78                 .fn = generate_possibleInferiors,
  79                 .aggregate = false,
  80         }
  81 };
  82
  83 struct schema_data_private_data {
  84         struct ldb_dn *aggregate_dn;
  85         struct ldb_dn *schema_dn;
  86 };
  87
  88 struct schema_data_search_data {
  89         struct ldb_module *module;
  90         struct ldb_request *req;
  91
  92         const struct dsdb_schema *schema;
  93 };
  94
  95 static int schema_data_init(struct ldb_module *module)
  96 {
  97         struct ldb_context *ldb;
  98         struct ldb_dn *schema_dn;
  99         int ret;
 100         struct schema_data_private_data *data;
 101
 102         ret = ldb_next_init(module);
 103         if (ret != LDB_SUCCESS) {
 104                 return ret;
 105         }
 106
 107         ldb = ldb_module_get_ctx(module);
 108         schema_dn = ldb_get_schema_basedn(ldb);
 109         if (!schema_dn) {
 110                 ldb_reset_err_string(ldb);
 111                 ldb_debug(ldb, LDB_DEBUG_WARNING,
 112                           "schema_data_init: no schema dn present: (skip schema loading)\n");
 113                 return LDB_SUCCESS;
 114         }
 115
 116         data = talloc(module, struct schema_data_private_data);
 117         if (data == NULL) {
 118                 return ldb_oom(ldb);
 119         }
 120
 121         data->schema_dn = schema_dn;
 122
 123         /* Used to check to see if this is a result on the CN=Aggregate schema */
 124         data->aggregate_dn = samdb_aggregate_schema_dn(ldb, data);
 125         if (!data->aggregate_dn) {
 126                 ldb_asprintf_errstring(ldb, "schema_data_init: Could not build aggregate schema DN for schema in %s", ldb_dn_get_linearized(schema_dn));
 127                 return LDB_ERR_OPERATIONS_ERROR;
 128         }
 129
 130         ldb_module_set_private(module, data);
 131         return LDB_SUCCESS;
 132 }
 133
 134 static int schema_data_add(struct ldb_module *module, struct ldb_request *req)
 135 {
 136         struct ldb_context *ldb;
 137         struct dsdb_schema *schema;
 138         const struct ldb_val *attributeID = NULL;
 139         const struct ldb_val *governsID = NULL;
 140         const char *oid_attr = NULL;
 141         const char *oid = NULL;
 142         struct ldb_dn *parent_dn = NULL;
 143         int cmp;
 144         WERROR status;
 145         bool rodc = false;
 146         int ret;
 147
 148         ldb = ldb_module_get_ctx(module);
 149
 150         /* special objects should always go through */
 151         if (ldb_dn_is_special(req->op.add.message->dn)) {
 152                 return ldb_next_request(module, req);
 153         }
 154
 155         /* replicated update should always go through */
 156         if (ldb_request_get_control(req, DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
 157                 return ldb_next_request(module, req);
 158         }
 159
 160         schema = dsdb_get_schema(ldb, req);
 161         if (!schema) {
 162                 return ldb_next_request(module, req);
 163         }
 164
 165         if (schema->base_dn == NULL) {
 166                 ldb_debug_set(ldb, LDB_DEBUG_FATAL,
 167                           "schema_data_add: base_dn NULL\n");
 168                 return LDB_ERR_OPERATIONS_ERROR;
 169         }
 170
 171         ret = samdb_rodc(ldb, &rodc);
 172         if (ret != LDB_SUCCESS) {
 173                 DEBUG(4, (__location__ ": unable to tell if we are an RODC \n"));
 174         }
 175
 176         if (!schema->fsmo.we_are_master && !rodc) {
 177                 ldb_debug_set(ldb, LDB_DEBUG_ERROR,
 178                           "schema_data_add: we are not master: reject request\n");
 179                 return LDB_ERR_UNWILLING_TO_PERFORM;
 180         }
 181
 182         if (!schema->fsmo.update_allowed && !rodc) {
 183                 ldb_debug_set(ldb, LDB_DEBUG_ERROR,
 184                           "schema_data_add: updates are not allowed: reject request\n");
 185                 return LDB_ERR_UNWILLING_TO_PERFORM;
 186         }
 187
 188         if (ldb_request_get_control(req, LDB_CONTROL_RELAX_OID)) {
 189                 /*
 190                  * the provision code needs to create
 191                  * the schema root object.
 192                  */
 193                 cmp = ldb_dn_compare(req->op.add.message->dn, schema->base_dn);
 194                 if (cmp == 0) {
 195                         return ldb_next_request(module, req);
 196                 }
 197         }
 198
 199         parent_dn = ldb_dn_get_parent(req, req->op.add.message->dn);
 200         if (!parent_dn) {
 201                 return ldb_oom(ldb);
 202         }
 203
 204         cmp = ldb_dn_compare(parent_dn, schema->base_dn);
 205         if (cmp != 0) {
 206                 ldb_debug_set(ldb, LDB_DEBUG_ERROR,
 207                           "schema_data_add: no direct child :%s\n",
 208                           ldb_dn_get_linearized(req->op.add.message->dn));
 209                 return LDB_ERR_UNWILLING_TO_PERFORM;
 210         }
 211
 212         attributeID = ldb_msg_find_ldb_val(req->op.add.message, "attributeID");
 213         governsID = ldb_msg_find_ldb_val(req->op.add.message, "governsID");
 214
 215         if (attributeID) {
 216                 oid_attr = "attributeID";
 217                 oid = talloc_strndup(req, (const char *)attributeID->data, attributeID->length);
 218         } else if (governsID) {
 219                 oid_attr = "governsID";
 220                 oid = talloc_strndup(req, (const char *)governsID->data, governsID->length);
 221         } else {
 222                 return ldb_next_request(module, req);
 223         }
 224
 225         if (!oid) {
 226                 return ldb_oom(ldb);
 227         }
 228
 229         status = dsdb_schema_pfm_find_oid(schema->prefixmap, oid, NULL);
 230         if (!W_ERROR_IS_OK(status)) {
 231                 /* check for internal errors */
 232                 if (!W_ERROR_EQUAL(status, WERR_NOT_FOUND)) {
 233                         ldb_debug_set(ldb, LDB_DEBUG_ERROR,
 234                                       "schema_data_add: failed to map %s[%s]: %s\n",
 235                                       oid_attr, oid, win_errstr(status));
 236                         return LDB_ERR_UNWILLING_TO_PERFORM;
 237                 }
 238
 239                 /* Update prefixMap and save it */
 240                 status = dsdb_create_prefix_mapping(ldb, schema, oid);
 241                 if (!W_ERROR_IS_OK(status)) {
 242                         ldb_debug_set(ldb, LDB_DEBUG_ERROR,
 243                                   "schema_data_add: failed to create prefix mapping for %s[%s]: %s\n",
 244                                   oid_attr, oid, win_errstr(status));
 245                         return LDB_ERR_UNWILLING_TO_PERFORM;
 246                 }
 247         }
 248
 249         return ldb_next_request(module, req);
 250 }
 251
 252 static int schema_data_modify(struct ldb_module *module, struct ldb_request *req)
 253 {
 254         struct ldb_context *ldb;
 255         struct dsdb_schema *schema;
 256         int cmp;
 257         bool rodc = false;
 258         int ret;
 259
 260         ldb = ldb_module_get_ctx(module);
 261
 262         /* special objects should always go through */
 263         if (ldb_dn_is_special(req->op.mod.message->dn)) {
 264                 return ldb_next_request(module, req);
 265         }
 266
 267         /* replicated update should always go through */
 268         if (ldb_request_get_control(req, DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
 269                 return ldb_next_request(module, req);
 270         }
 271
 272         /* dbcheck should be able to fix things */
 273         if (ldb_request_get_control(req, DSDB_CONTROL_DBCHECK)) {
 274                 return ldb_next_request(module, req);
 275         }
 276
 277         schema = dsdb_get_schema(ldb, req);
 278         if (!schema) {
 279                 return ldb_next_request(module, req);
 280         }
 281
 282         cmp = ldb_dn_compare(req->op.mod.message->dn, schema->base_dn);
 283         if (cmp == 0) {
 284                 static const char * const constrained_attrs[] = {
 285                         "schemaInfo",
 286                         "prefixMap",
 287                         "msDs-Schema-Extensions",
 288                         "msDS-IntId",
 289                         NULL
 290                 };
 291                 size_t i;
 292                 struct ldb_message_element *el;
 293
 294                 if (ldb_request_get_control(req, LDB_CONTROL_AS_SYSTEM_OID)) {
 295                         return ldb_next_request(module, req);
 296                 }
 297
 298                 for (i=0; constrained_attrs[i]; i++) {
 299                         el = ldb_msg_find_element(req->op.mod.message,
 300                                                   constrained_attrs[i]);
 301                         if (el == NULL) {
 302                                 continue;
 303                         }
 304
 305                         ldb_debug_set(ldb, LDB_DEBUG_ERROR,
 306                                       "schema_data_modify: reject update "
 307                                       "of attribute[%s]\n",
 308                                       constrained_attrs[i]);
 309                         return LDB_ERR_CONSTRAINT_VIOLATION;
 310                 }
 311
 312                 return ldb_next_request(module, req);
 313         }
 314
 315         ret = samdb_rodc(ldb, &rodc);
 316         if (ret != LDB_SUCCESS) {
 317                 DEBUG(4, (__location__ ": unable to tell if we are an RODC \n"));
 318         }
 319
 320         if (!schema->fsmo.we_are_master && !rodc) {
 321                 ldb_debug_set(ldb, LDB_DEBUG_ERROR,
 322                           "schema_data_modify: we are not master: reject request\n");
 323                 return LDB_ERR_UNWILLING_TO_PERFORM;
 324         }
 325
 326         if (!schema->fsmo.update_allowed && !rodc) {
 327                 ldb_debug_set(ldb, LDB_DEBUG_ERROR,
 328                           "schema_data_add: updates are not allowed: reject request\n");
 329                 return LDB_ERR_UNWILLING_TO_PERFORM;
 330         }
 331
 332         return ldb_next_request(module, req);
 333 }
 334
 335 static int schema_data_del(struct ldb_module *module, struct ldb_request *req)
 336 {
 337         struct ldb_context *ldb;
 338         struct dsdb_schema *schema;
 339         bool rodc = false;
 340         int ret;
 341
 342         ldb = ldb_module_get_ctx(module);
 343
 344         /* special objects should always go through */
 345         if (ldb_dn_is_special(req->op.del.dn)) {
 346                 return ldb_next_request(module, req);
 347         }
 348
 349         /* replicated update should always go through */
 350         if (ldb_request_get_control(req, DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
 351                 return ldb_next_request(module, req);
 352         }
 353
 354         /* dbcheck should be able to fix things */
 355         if (ldb_request_get_control(req, DSDB_CONTROL_DBCHECK)) {
 356                 return ldb_next_request(module, req);
 357         }
 358
 359         schema = dsdb_get_schema(ldb, req);
 360         if (!schema) {
 361                 return ldb_next_request(module, req);
 362         }
 363
 364         ret = samdb_rodc(ldb, &rodc);
 365         if (ret != LDB_SUCCESS) {
 366                 DEBUG(4, (__location__ ": unable to tell if we are an RODC \n"));
 367         }
 368
 369         if (!schema->fsmo.we_are_master && !rodc) {
 370                 ldb_debug_set(ldb, LDB_DEBUG_ERROR,
 371                           "schema_data_modify: we are not master: reject request\n");
 372                 return LDB_ERR_UNWILLING_TO_PERFORM;
 373         }
 374
 375         /*
 376          * normaly the DACL will prevent delete
 377          * with LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS
 378          * above us.
 379          */
 380         ldb_debug_set(ldb, LDB_DEBUG_ERROR,
 381                       "schema_data_del: delete is not allowed in the schema\n");
 382         return LDB_ERR_UNWILLING_TO_PERFORM;
 383 }
 384
 385 static int generate_objectClasses(struct ldb_context *ldb, struct ldb_message *msg,
 386                                   const struct dsdb_schema *schema)
 387 {
 388         const struct dsdb_class *sclass;
 389         int ret;
 390
 391         for (sclass = schema->classes; sclass; sclass = sclass->next) {
 392                 ret = ldb_msg_add_string(msg, "objectClasses", schema_class_to_description(msg, sclass));
 393                 if (ret != LDB_SUCCESS) {
 394                         return ret;
 395                 }
 396         }
 397         return LDB_SUCCESS;
 398 }
 399 static int generate_attributeTypes(struct ldb_context *ldb, struct ldb_message *msg,
 400                                   const struct dsdb_schema *schema)
 401 {
 402         const struct dsdb_attribute *attribute;
 403         int ret;
 404
 405         for (attribute = schema->attributes; attribute; attribute = attribute->next) {
 406                 ret = ldb_msg_add_string(msg, "attributeTypes", schema_attribute_to_description(msg, attribute));
 407                 if (ret != LDB_SUCCESS) {
 408                         return ret;
 409                 }
 410         }
 411         return LDB_SUCCESS;
 412 }
 413
 414 static int generate_dITContentRules(struct ldb_context *ldb, struct ldb_message *msg,
 415                                     const struct dsdb_schema *schema)
 416 {
 417         const struct dsdb_class *sclass;
 418         int ret;
 419
 420         for (sclass = schema->classes; sclass; sclass = sclass->next) {
 421                 if (sclass->auxiliaryClass || sclass->systemAuxiliaryClass) {
 422                         char *ditcontentrule = schema_class_to_dITContentRule(msg, sclass, schema);
 423                         if (!ditcontentrule) {
 424                                 return ldb_oom(ldb);
 425                         }
 426                         ret = ldb_msg_add_steal_string(msg, "dITContentRules", ditcontentrule);
 427                         if (ret != LDB_SUCCESS) {
 428                                 return ret;
 429                         }
 430                 }
 431         }
 432         return LDB_SUCCESS;
 433 }
 434
 435 static int generate_extendedAttributeInfo(struct ldb_context *ldb,
 436                                           struct ldb_message *msg,
 437                                           const struct dsdb_schema *schema)
 438 {
 439         const struct dsdb_attribute *attribute;
 440         int ret;
 441
 442         for (attribute = schema->attributes; attribute; attribute = attribute->next) {
 443                 char *val = schema_attribute_to_extendedInfo(msg, attribute);
 444                 if (!val) {
 445                         return ldb_oom(ldb);
 446                 }
 447
 448                 ret = ldb_msg_add_string(msg, "extendedAttributeInfo", val);
 449                 if (ret != LDB_SUCCESS) {
 450                         return ret;
 451                 }
 452         }
 453
 454         return LDB_SUCCESS;
 455 }
 456
 457 static int generate_extendedClassInfo(struct ldb_context *ldb,
 458                                       struct ldb_message *msg,
 459                                       const struct dsdb_schema *schema)
 460 {
 461         const struct dsdb_class *sclass;
 462         int ret;
 463
 464         for (sclass = schema->classes; sclass; sclass = sclass->next) {
 465                 char *val = schema_class_to_extendedInfo(msg, sclass);
 466                 if (!val) {
 467                         return ldb_oom(ldb);
 468                 }
 469
 470                 ret = ldb_msg_add_string(msg, "extendedClassInfo", val);
 471                 if (ret != LDB_SUCCESS) {
 472                         return ret;
 473                 }
 474         }
 475
 476         return LDB_SUCCESS;
 477 }
 478
 479
 480 static int generate_possibleInferiors(struct ldb_context *ldb, struct ldb_message *msg,
 481                                       const struct dsdb_schema *schema)
 482 {
 483         struct ldb_dn *dn = msg->dn;
 484         unsigned int i;
 485         int ret;
 486         const char *first_component_name = ldb_dn_get_component_name(dn, 0);
 487         const struct ldb_val *first_component_val;
 488         const struct dsdb_class *schema_class;
 489         const char **possibleInferiors;
 490
 491         if (strcasecmp(first_component_name, "cn") != 0) {
 492                 return LDB_SUCCESS;
 493         }
 494
 495         first_component_val = ldb_dn_get_component_val(dn, 0);
 496
 497         schema_class = dsdb_class_by_cn_ldb_val(schema, first_component_val);
 498         if (schema_class == NULL) {
 499                 return LDB_SUCCESS;
 500         }
 501
 502         possibleInferiors = schema_class->possibleInferiors;
 503         if (possibleInferiors == NULL) {
 504                 return LDB_SUCCESS;
 505         }
 506
 507         for (i=0;possibleInferiors[i];i++) {
 508                 ret = ldb_msg_add_string(msg, "possibleInferiors", possibleInferiors[i]);
 509                 if (ret != LDB_SUCCESS) {
 510                         return ret;
 511                 }
 512         }
 513
 514         return LDB_SUCCESS;
 515 }
 516
 517
 518 /* Add objectClasses, attributeTypes and dITContentRules from the
 519    schema object (they are not stored in the database)
 520  */
 521 static int schema_data_search_callback(struct ldb_request *req, struct ldb_reply *ares)
 522 {
 523         struct ldb_context *ldb;
 524         struct schema_data_search_data *ac;
 525         struct schema_data_private_data *mc;
 526         unsigned int i;
 527         int ret;
 528
 529         ac = talloc_get_type(req->context, struct schema_data_search_data);
 530         mc = talloc_get_type(ldb_module_get_private(ac->module), struct schema_data_private_data);
 531         ldb = ldb_module_get_ctx(ac->module);
 532
 533         if (!ares) {
 534                 return ldb_module_done(ac->req, NULL, NULL,
 535                                         LDB_ERR_OPERATIONS_ERROR);
 536         }
 537         if (ares->error != LDB_SUCCESS) {
 538                 return ldb_module_done(ac->req, ares->controls,
 539                                         ares->response, ares->error);
 540         }
 541         /* Only entries are interesting, and we handle the case of the parent seperatly */
 542
 543         switch (ares->type) {
 544         case LDB_REPLY_ENTRY:
 545
 546                 if (ldb_dn_compare(ares->message->dn, mc->aggregate_dn) == 0) {
 547                         for (i=0; i < ARRAY_SIZE(generated_attrs); i++) {
 548                                 if (generated_attrs[i].aggregate &&
 549                                     ldb_attr_in_list(ac->req->op.search.attrs, generated_attrs[i].attr)) {
 550                                         ret = generated_attrs[i].fn(ldb, ares->message, ac->schema);
 551                                         if (ret != LDB_SUCCESS) {
 552                                                 return ret;
 553                                         }
 554                                 }
 555                         }
 556                 } else if ((ldb_dn_compare_base(mc->schema_dn, ares->message->dn) == 0)
 557                            && (ldb_dn_compare(mc->schema_dn, ares->message->dn) != 0)) {
 558                         for (i=0; i < ARRAY_SIZE(generated_attrs); i++) {
 559                                 if (!generated_attrs[i].aggregate &&
 560                                     ldb_attr_in_list(ac->req->op.search.attrs, generated_attrs[i].attr)) {
 561                                         ret = generated_attrs[i].fn(ldb, ares->message, ac->schema);
 562                                         if (ret != LDB_SUCCESS) {
 563                                                 return ret;
 564                                         }
 565                                 }
 566                         }
 567                 }
 568
 569
 570                 return ldb_module_send_entry(ac->req, ares->message, ares->controls);
 571
 572         case LDB_REPLY_REFERRAL:
 573
 574                 return ldb_module_send_referral(ac->req, ares->referral);
 575
 576         case LDB_REPLY_DONE:
 577
 578                 return ldb_module_done(ac->req, ares->controls,
 579                                         ares->response, ares->error);
 580         }
 581
 582         return LDB_SUCCESS;
 583 }
 584
 585 /* search */
 586 static int schema_data_search(struct ldb_module *module, struct ldb_request *req)
 587 {
 588         struct ldb_context *ldb = ldb_module_get_ctx(module);
 589         unsigned int i;
 590         int ret;
 591         struct schema_data_search_data *search_context;
 592         struct ldb_request *down_req;
 593         const struct dsdb_schema *schema;
 594         if (!ldb_module_get_private(module)) {
 595                 /* If there is no module data, there is little we can do */
 596                 return ldb_next_request(module, req);
 597         }
 598
 599         /* The schema manipulation does not apply to special DNs */
 600         if (ldb_dn_is_special(req->op.search.base)) {
 601                 return ldb_next_request(module, req);
 602         }
 603
 604         for (i=0; i < ARRAY_SIZE(generated_attrs); i++) {
 605                 if (ldb_attr_in_list(req->op.search.attrs, generated_attrs[i].attr)) {
 606                         break;
 607                 }
 608         }
 609         if (i == ARRAY_SIZE(generated_attrs)) {
 610                 /* No request for a generated attr found, nothing to
 611                  * see here, move along... */
 612                 return ldb_next_request(module, req);
 613         }
 614
 615         schema = dsdb_get_schema(ldb, NULL);
 616         if (!schema || !ldb_module_get_private(module)) {
 617                 /* If there is no schema, there is little we can do */
 618                 return ldb_next_request(module, req);
 619         }
 620
 621         search_context = talloc(req, struct schema_data_search_data);
 622         if (!search_context) {
 623                 return ldb_oom(ldb);
 624         }
 625
 626         search_context->module = module;
 627         search_context->req = req;
 628         search_context->schema = talloc_reference(search_context, schema);
 629         if (!search_context->schema) {
 630                 return ldb_oom(ldb);
 631         }
 632
 633         ret = ldb_build_search_req_ex(&down_req, ldb, search_context,
 634                                         req->op.search.base,
 635                                         req->op.search.scope,
 636                                         req->op.search.tree,
 637                                         req->op.search.attrs,
 638                                         req->controls,
 639                                         search_context, schema_data_search_callback,
 640                                         req);
 641         LDB_REQ_SET_LOCATION(down_req);
 642         if (ret != LDB_SUCCESS) {
 643                 return ldb_operr(ldb);
 644         }
 645
 646         return ldb_next_request(module, down_req);
 647 }
 648
 649
 650 static const struct ldb_module_ops ldb_schema_data_module_ops = {
 651         .name           = "schema_data",
 652         .init_context   = schema_data_init,
 653         .add            = schema_data_add,
 654         .modify         = schema_data_modify,
 655         .del            = schema_data_del,
 656         .search         = schema_data_search
 657 };
 658
 659 int ldb_schema_data_module_init(const char *version)
 660 {
 661         LDB_MODULE_CHECK_VERSION(version);
 662         return ldb_register_module(&ldb_schema_data_module_ops);
 663 }