source4/dsdb/samdb/ldb_modules/acl.c

   1 /*
   2   ldb database library
   3
   4   Copyright (C) Simo Sorce 2006-2008
   5   Copyright (C) Nadezhda Ivanova 2009
   6   Copyright (C) Anatoliy Atanasov  2009
   7
   8   This program is free software; you can redistribute it and/or modify
   9   it under the terms of the GNU General Public License as published by
  10   the Free Software Foundation; either version 3 of the License, or
  11   (at your option) any later version.
  12
  13   This program is distributed in the hope that it will be useful,
  14   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16   GNU General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 /*
  23  *  Name: ldb
  24  *
  25  *  Component: ldb ACL module
  26  *
  27  *  Description: Module that performs authorisation access checks based on the
  28  *               account's security context and the DACL of the object being polled.
  29  *               Only DACL checks implemented at this point
  30  *
  31  *  Authors: Nadezhda Ivanova, Anatoliy Atanasov
  32  */
  33
  34 #include "includes.h"
  35 #include "ldb_module.h"
  36 #include "auth/auth.h"
  37 #include "libcli/security/security.h"
  38 #include "dsdb/samdb/samdb.h"
  39 #include "librpc/gen_ndr/ndr_security.h"
  40 #include "param/param.h"
  41 #include "dsdb/samdb/ldb_modules/util.h"
  42 #include "lib/util/tsort.h"
  43
  44 struct extended_access_check_attribute {
  45         const char *oa_name;
  46         const uint32_t requires_rights;
  47 };
  48
  49 struct acl_private {
  50         bool acl_perform;
  51         const char **password_attrs;
  52 };
  53
  54 struct acl_context {
  55         struct ldb_module *module;
  56         struct ldb_request *req;
  57         bool am_system;
  58         bool allowedAttributes;
  59         bool allowedAttributesEffective;
  60         bool allowedChildClasses;
  61         bool allowedChildClassesEffective;
  62         bool sDRightsEffective;
  63         const char * const *attrs;
  64         struct dsdb_schema *schema;
  65 };
  66
  67 bool is_root_base_dn(struct ldb_context *ldb, struct ldb_dn *dn_to_check)
  68 {
  69         int result;
  70         struct ldb_dn *root_base_dn = ldb_get_root_basedn(ldb);
  71         result = ldb_dn_compare(root_base_dn,dn_to_check);
  72         return (result==0);
  73 }
  74
  75 static struct security_token *acl_user_token(struct ldb_module *module)
  76 {
  77         struct ldb_context *ldb = ldb_module_get_ctx(module);
  78         struct auth_session_info *session_info
  79                 = (struct auth_session_info *)ldb_get_opaque(ldb, "sessionInfo");
  80         if(!session_info) {
  81                 return NULL;
  82         }
  83         return session_info->security_token;
  84 }
  85
  86 /* performs an access check from inside the module stack
  87  * given the dn of the object to be checked, the required access
  88  * guid is either the guid of the extended right, or NULL
  89  */
  90
  91 int dsdb_module_check_access_on_dn(struct ldb_module *module,
  92                                    TALLOC_CTX *mem_ctx,
  93                                    struct ldb_dn *dn,
  94                                    uint32_t access,
  95                                    const struct GUID *guid)
  96 {
  97         int ret;
  98         struct ldb_result *acl_res;
  99         static const char *acl_attrs[] = {
 100                 "nTSecurityDescriptor",
 101                 "objectSid",
 102                 NULL
 103         };
 104         struct ldb_context *ldb = ldb_module_get_ctx(module);
 105         struct auth_session_info *session_info
 106                 = (struct auth_session_info *)ldb_get_opaque(ldb, "sessionInfo");
 107         if(!session_info) {
 108                 return LDB_ERR_OPERATIONS_ERROR;
 109         }
 110         ret = dsdb_module_search_dn(module, mem_ctx, &acl_res, dn,
 111                                     acl_attrs, DSDB_SEARCH_SHOW_DELETED);
 112         if (ret != LDB_SUCCESS) {
 113                 DEBUG(10,("access_check: failed to find object %s\n", ldb_dn_get_linearized(dn)));
 114                 return ret;
 115         }
 116         return dsdb_check_access_on_dn_internal(acl_res,
 117                                                 mem_ctx,
 118                                                 session_info->security_token,
 119                                                 dn,
 120                                                 access,
 121                                                 guid);
 122 }
 123
 124
 125 static int acl_module_init(struct ldb_module *module)
 126 {
 127         struct ldb_context *ldb;
 128         struct acl_private *data;
 129         int ret, i;
 130         TALLOC_CTX *mem_ctx = talloc_new(module);
 131         static const char *attrs[] = { "passwordAttribute", NULL };
 132         struct ldb_result *res;
 133         struct ldb_message *msg;
 134         struct ldb_message_element *password_attributes;
 135
 136         ldb = ldb_module_get_ctx(module);
 137
 138         ret = ldb_mod_register_control(module, LDB_CONTROL_SD_FLAGS_OID);
 139         if (ret != LDB_SUCCESS) {
 140                 ldb_debug(ldb, LDB_DEBUG_ERROR,
 141                           "acl_module_init: Unable to register control with rootdse!\n");
 142                 return LDB_ERR_OPERATIONS_ERROR;
 143         }
 144
 145         data = talloc(module, struct acl_private);
 146         if (data == NULL) {
 147                 ldb_oom(ldb);
 148                 return LDB_ERR_OPERATIONS_ERROR;
 149         }
 150
 151         data->password_attrs = NULL;
 152         data->acl_perform = lp_parm_bool(ldb_get_opaque(ldb, "loadparm"),
 153                                          NULL, "acl", "perform", false);
 154         ldb_module_set_private(module, data);
 155
 156         if (!mem_ctx) {
 157                 ldb_oom(ldb);
 158                 return LDB_ERR_OPERATIONS_ERROR;
 159         }
 160
 161         ret = dsdb_module_search_dn(module, mem_ctx, &res,
 162                                     ldb_dn_new(mem_ctx, ldb, "@KLUDGEACL"),
 163                                     attrs, 0);
 164         if (ret != LDB_SUCCESS) {
 165                 goto done;
 166         }
 167         if (res->count == 0) {
 168                 goto done;
 169         }
 170
 171         if (res->count > 1) {
 172                 talloc_free(mem_ctx);
 173                 return LDB_ERR_CONSTRAINT_VIOLATION;
 174         }
 175
 176         msg = res->msgs[0];
 177
 178         password_attributes = ldb_msg_find_element(msg, "passwordAttribute");
 179         if (!password_attributes) {
 180                 goto done;
 181         }
 182         data->password_attrs = talloc_array(data, const char *, password_attributes->num_values + 1);
 183         if (!data->password_attrs) {
 184                 talloc_free(mem_ctx);
 185                 ldb_oom(ldb);
 186                 return LDB_ERR_OPERATIONS_ERROR;
 187         }
 188         for (i=0; i < password_attributes->num_values; i++) {
 189                 data->password_attrs[i] = (const char *)password_attributes->values[i].data;
 190                 talloc_steal(data->password_attrs, password_attributes->values[i].data);
 191         }
 192         data->password_attrs[i] = NULL;
 193
 194 done:
 195         talloc_free(mem_ctx);
 196         return ldb_next_init(module);
 197 }
 198
 199 static const struct GUID *get_oc_guid_from_message(struct ldb_module *module,
 200                                                    const struct dsdb_schema *schema,
 201                                                    struct ldb_message *msg)
 202 {
 203         struct ldb_message_element *oc_el;
 204
 205         oc_el = ldb_msg_find_element(msg, "objectClass");
 206         if (!oc_el) {
 207                 return NULL;
 208         }
 209
 210         return class_schemaid_guid_by_lDAPDisplayName(schema,
 211                                                       (char *)oc_el->values[oc_el->num_values-1].data);
 212 }
 213
 214 static int acl_check_access_on_attribute(struct ldb_module *module,
 215                                          TALLOC_CTX *mem_ctx,
 216                                          struct security_descriptor *sd,
 217                                          struct dom_sid *rp_sid,
 218                                          uint32_t access,
 219                                          const struct dsdb_attribute *attr)
 220 {
 221         int ret;
 222         NTSTATUS status;
 223         uint32_t access_granted;
 224         struct object_tree *root = NULL;
 225         struct object_tree *new_node = NULL;
 226         TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
 227         struct security_token *token = acl_user_token(module);
 228         if (attr) {
 229                 if (!GUID_all_zero(&attr->attributeSecurityGUID)) {
 230                         if (!insert_in_object_tree(tmp_ctx,
 231                                                    &attr->attributeSecurityGUID, access,
 232                                                    &root, &new_node)) {
 233                                 DEBUG(10, ("acl_search: cannot add to object tree securityGUID\n"));
 234                                 goto fail;
 235                         }
 236
 237                         if (!insert_in_object_tree(tmp_ctx,
 238                                                    &attr->schemaIDGUID, access, &new_node, &new_node)) {
 239                                 DEBUG(10, ("acl_search: cannot add to object tree attributeGUID\n"));
 240                                 goto fail;
 241                         }
 242                 }
 243                 else {
 244                         if (!insert_in_object_tree(tmp_ctx,
 245                                                    &attr->schemaIDGUID, access, &root, &new_node)) {
 246                                 DEBUG(10, ("acl_search: cannot add to object tree attributeGUID\n"));
 247                                 goto fail;
 248                         }
 249                 }
 250         }
 251         status = sec_access_check_ds(sd, token,
 252                                      access,
 253                                      &access_granted,
 254                                      root,
 255                                      rp_sid);
 256         if (!NT_STATUS_IS_OK(status)) {
 257                 ret = LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS;
 258         }
 259         else {
 260                 ret = LDB_SUCCESS;
 261         }
 262         return ret;
 263 fail:
 264         return LDB_ERR_OPERATIONS_ERROR;
 265 }
 266
 267 static int acl_check_access_on_class(struct ldb_module *module,
 268                                      const struct dsdb_schema *schema,
 269                                      TALLOC_CTX *mem_ctx,
 270                                      struct security_descriptor *sd,
 271                                      struct dom_sid *rp_sid,
 272                                      uint32_t access,
 273                                      const char *class_name)
 274 {
 275         int ret;
 276         NTSTATUS status;
 277         uint32_t access_granted;
 278         struct object_tree *root = NULL;
 279         struct object_tree *new_node = NULL;
 280         const struct GUID *guid;
 281         TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
 282         struct security_token *token = acl_user_token(module);
 283         if (class_name) {
 284                 guid = class_schemaid_guid_by_lDAPDisplayName(schema, class_name);
 285                 if (!guid) {
 286                         DEBUG(10, ("acl_search: cannot find class %s\n",
 287                                    class_name));
 288                         goto fail;
 289                 }
 290                 if (!insert_in_object_tree(tmp_ctx,
 291                                            guid, access,
 292                                            &root, &new_node)) {
 293                         DEBUG(10, ("acl_search: cannot add to object tree guid\n"));
 294                         goto fail;
 295                 }
 296         }
 297         status = sec_access_check_ds(sd, token,
 298                                      access,
 299                                      &access_granted,
 300                                      root,
 301                                      rp_sid);
 302         if (!NT_STATUS_IS_OK(status)) {
 303                 ret = LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS;
 304         }
 305         else {
 306                 ret = LDB_SUCCESS;
 307         }
 308         return ret;
 309 fail:
 310         return LDB_ERR_OPERATIONS_ERROR;
 311 }
 312
 313 static int acl_allowedAttributes(struct ldb_module *module,
 314                                  const struct dsdb_schema *schema,
 315                                  struct ldb_message *sd_msg,
 316                                  struct ldb_message *msg,
 317                                  struct acl_context *ac)
 318 {
 319         struct ldb_message_element *oc_el;
 320         struct ldb_context *ldb = ldb_module_get_ctx(module);
 321         TALLOC_CTX *mem_ctx;
 322         const char **attr_list;
 323         int i, ret;
 324
 325         /* If we don't have a schema yet, we can't do anything... */
 326         if (schema == NULL) {
 327                 ldb_asprintf_errstring(ldb, "cannot add allowedAttributes to %s because no schema is loaded", ldb_dn_get_linearized(msg->dn));
 328                 return LDB_ERR_OPERATIONS_ERROR;
 329         }
 330
 331         /* Must remove any existing attribute */
 332         if (ac->allowedAttributes) {
 333                 ldb_msg_remove_attr(msg, "allowedAttributes");
 334         }
 335
 336         mem_ctx = talloc_new(msg);
 337         if (!mem_ctx) {
 338                 ldb_oom(ldb);
 339                 return LDB_ERR_OPERATIONS_ERROR;
 340         }
 341
 342         oc_el = ldb_msg_find_element(sd_msg, "objectClass");
 343         attr_list = dsdb_full_attribute_list(mem_ctx, schema, oc_el, DSDB_SCHEMA_ALL);
 344         if (!attr_list) {
 345                 ldb_asprintf_errstring(ldb, "acl: Failed to get list of attributes");
 346                 talloc_free(mem_ctx);
 347                 return LDB_ERR_OPERATIONS_ERROR;
 348         }
 349         if (ac->allowedAttributes) {
 350                 for (i=0; attr_list && attr_list[i]; i++) {
 351                         ldb_msg_add_string(msg, "allowedAttributes", attr_list[i]);
 352                 }
 353         }
 354         if (ac->allowedAttributesEffective) {
 355                 struct security_descriptor *sd;
 356                 struct dom_sid *sid = NULL;
 357                 struct ldb_control *as_system = ldb_request_get_control(ac->req,
 358                                                                         LDB_CONTROL_AS_SYSTEM_OID);
 359
 360                 if (as_system != NULL) {
 361                         as_system->critical = 0;
 362                 }
 363
 364                 ldb_msg_remove_attr(msg, "allowedAttributesEffective");
 365                 if (ac->am_system || as_system) {
 366                         for (i=0; attr_list && attr_list[i]; i++) {
 367                                 ldb_msg_add_string(msg, "allowedAttributesEffective", attr_list[i]);
 368                         }
 369                         return LDB_SUCCESS;
 370                 }
 371
 372                 ret = dsdb_get_sd_from_ldb_message(mem_ctx, sd_msg, &sd);
 373
 374                 if (ret != LDB_SUCCESS) {
 375                         return ret;
 376                 }
 377                 ret = dsdb_get_dom_sid_from_ldb_message(mem_ctx, sd_msg, &sid);
 378
 379                 if (ret != LDB_SUCCESS) {
 380                         return ret;
 381                 }
 382                 for (i=0; attr_list && attr_list[i]; i++) {
 383                         const struct dsdb_attribute *attr = dsdb_attribute_by_lDAPDisplayName(schema,
 384                                                                                         attr_list[i]);
 385                         if (!attr) {
 386                                 return LDB_ERR_OPERATIONS_ERROR;
 387                         }
 388                         /* remove constructed attributes */
 389                         if (attr->systemFlags & DS_FLAG_ATTR_IS_CONSTRUCTED
 390                             || attr->systemOnly
 391                             || (attr->linkID != 0 && attr->linkID % 2 != 0 )) {
 392                                 continue;
 393                         }
 394                         ret = acl_check_access_on_attribute(module,
 395                                                             msg,
 396                                                             sd,
 397                                                             sid,
 398                                                             SEC_ADS_WRITE_PROP,
 399                                                             attr);
 400                         if (ret == LDB_SUCCESS) {
 401                                 ldb_msg_add_string(msg, "allowedAttributesEffective", attr_list[i]);
 402                         }
 403                 }
 404         }
 405         return LDB_SUCCESS;
 406 }
 407
 408 static int acl_childClasses(struct ldb_module *module,
 409                             const struct dsdb_schema *schema,
 410                             struct ldb_message *sd_msg,
 411                             struct ldb_message *msg,
 412                             const char *attrName)
 413 {
 414         struct ldb_message_element *oc_el;
 415         struct ldb_message_element *allowedClasses;
 416         const struct dsdb_class *sclass;
 417         int i, j, ret;
 418
 419         /* If we don't have a schema yet, we can't do anything... */
 420         if (schema == NULL) {
 421                 ldb_asprintf_errstring(ldb_module_get_ctx(module), "cannot add childClassesEffective to %s because no schema is loaded", ldb_dn_get_linearized(msg->dn));
 422                 return LDB_ERR_OPERATIONS_ERROR;
 423         }
 424
 425         /* Must remove any existing attribute, or else confusion reins */
 426         ldb_msg_remove_attr(msg, attrName);
 427         ret = ldb_msg_add_empty(msg, attrName, 0, &allowedClasses);
 428         if (ret != LDB_SUCCESS) {
 429                 return ret;
 430         }
 431
 432         oc_el = ldb_msg_find_element(sd_msg, "objectClass");
 433
 434         for (i=0; oc_el && i < oc_el->num_values; i++) {
 435                 sclass = dsdb_class_by_lDAPDisplayName_ldb_val(schema, &oc_el->values[i]);
 436                 if (!sclass) {
 437                         /* We don't know this class?  what is going on? */
 438                         continue;
 439                 }
 440
 441                 for (j=0; sclass->possibleInferiors && sclass->possibleInferiors[j]; j++) {
 442                         ldb_msg_add_string(msg, attrName, sclass->possibleInferiors[j]);
 443                 }
 444         }
 445         if (allowedClasses->num_values > 1) {
 446                 TYPESAFE_QSORT(allowedClasses->values, allowedClasses->num_values, data_blob_cmp);
 447                 for (i=1 ; i < allowedClasses->num_values; i++) {
 448                         struct ldb_val *val1 = &allowedClasses->values[i-1];
 449                         struct ldb_val *val2 = &allowedClasses->values[i];
 450                         if (data_blob_cmp(val1, val2) == 0) {
 451                                 memmove(val1, val2, (allowedClasses->num_values - i) * sizeof(struct ldb_val));
 452                                 allowedClasses->num_values--;
 453                                 i--;
 454                         }
 455                 }
 456         }
 457
 458         return LDB_SUCCESS;
 459 }
 460
 461 static int acl_childClassesEffective(struct ldb_module *module,
 462                                      const struct dsdb_schema *schema,
 463                                      struct ldb_message *sd_msg,
 464                                      struct ldb_message *msg,
 465                                      struct acl_context *ac)
 466 {
 467         struct ldb_message_element *oc_el;
 468         struct ldb_message_element *allowedClasses = NULL;
 469         const struct dsdb_class *sclass;
 470         struct security_descriptor *sd;
 471         struct ldb_control *as_system = ldb_request_get_control(ac->req,
 472                                                                 LDB_CONTROL_AS_SYSTEM_OID);
 473         struct dom_sid *sid = NULL;
 474         int i, j, ret;
 475
 476         if (as_system != NULL) {
 477                 as_system->critical = 0;
 478         }
 479
 480         if (ac->am_system || as_system) {
 481                 return acl_childClasses(module, schema, sd_msg, msg, "allowedChildClassesEffective");
 482         }
 483
 484         /* If we don't have a schema yet, we can't do anything... */
 485         if (schema == NULL) {
 486                 ldb_asprintf_errstring(ldb_module_get_ctx(module), "cannot add allowedChildClassesEffective to %s because no schema is loaded", ldb_dn_get_linearized(msg->dn));
 487                 return LDB_ERR_OPERATIONS_ERROR;
 488         }
 489
 490         /* Must remove any existing attribute, or else confusion reins */
 491         ldb_msg_remove_attr(msg, "allowedChildClassesEffective");
 492
 493         oc_el = ldb_msg_find_element(sd_msg, "objectClass");
 494         ret = dsdb_get_sd_from_ldb_message(msg, sd_msg, &sd);
 495         if (ret != LDB_SUCCESS) {
 496                 return ret;
 497         }
 498         ret = dsdb_get_dom_sid_from_ldb_message(msg, sd_msg, &sid);
 499
 500         if (ret != LDB_SUCCESS) {
 501                 return ret;
 502         }
 503         for (i=0; oc_el && i < oc_el->num_values; i++) {
 504                 sclass = dsdb_class_by_lDAPDisplayName_ldb_val(schema, &oc_el->values[i]);
 505                 if (!sclass) {
 506                         /* We don't know this class?  what is going on? */
 507                         continue;
 508                 }
 509
 510                 for (j=0; sclass->possibleInferiors && sclass->possibleInferiors[j]; j++) {
 511                         ret = acl_check_access_on_class(module,
 512                                                         schema,
 513                                                         msg,
 514                                                         sd,
 515                                                         sid,
 516                                                         SEC_ADS_CREATE_CHILD,
 517                                                         sclass->possibleInferiors[j]);
 518                         if (ret == LDB_SUCCESS) {
 519                                 ldb_msg_add_string(msg, "allowedChildClassesEffective",
 520                                                    sclass->possibleInferiors[j]);
 521                         }
 522                 }
 523         }
 524         allowedClasses = ldb_msg_find_element(msg, "allowedChildClassesEffective");
 525         if (!allowedClasses) {
 526                 return LDB_SUCCESS;
 527         }
 528
 529         if (allowedClasses->num_values > 1) {
 530                 TYPESAFE_QSORT(allowedClasses->values, allowedClasses->num_values, data_blob_cmp);
 531                 for (i=1 ; i < allowedClasses->num_values; i++) {
 532                         struct ldb_val *val1 = &allowedClasses->values[i-1];
 533                         struct ldb_val *val2 = &allowedClasses->values[i];
 534                         if (data_blob_cmp(val1, val2) == 0) {
 535                                 memmove(val1, val2, (allowedClasses->num_values - i) * sizeof( struct ldb_val));
 536                                 allowedClasses->num_values--;
 537                                 i--;
 538                         }
 539                 }
 540         }
 541         return LDB_SUCCESS;
 542 }
 543
 544 static int acl_sDRightsEffective(struct ldb_module *module,
 545                                  struct ldb_message *sd_msg,
 546                                  struct ldb_message *msg,
 547                                  struct acl_context *ac)
 548 {
 549         struct ldb_message_element *rightsEffective;
 550         int ret;
 551         struct security_descriptor *sd;
 552         struct ldb_control *as_system = ldb_request_get_control(ac->req,
 553                                                                 LDB_CONTROL_AS_SYSTEM_OID);
 554         struct dom_sid *sid = NULL;
 555         uint32_t flags = 0;
 556
 557         if (as_system != NULL) {
 558                 as_system->critical = 0;
 559         }
 560
 561         /* Must remove any existing attribute, or else confusion reins */
 562         ldb_msg_remove_attr(msg, "sDRightsEffective");
 563         ret = ldb_msg_add_empty(msg, "sDRightsEffective", 0, &rightsEffective);
 564         if (ret != LDB_SUCCESS) {
 565                 return ret;
 566         }
 567         if (ac->am_system || as_system) {
 568                 flags = SECINFO_OWNER | SECINFO_GROUP |  SECINFO_SACL |  SECINFO_DACL;
 569         }
 570         else {
 571                 /* Get the security descriptor from the message */
 572                 ret = dsdb_get_sd_from_ldb_message(msg, sd_msg, &sd);
 573                 if (ret != LDB_SUCCESS) {
 574                         return ret;
 575                 }
 576                 ret = dsdb_get_dom_sid_from_ldb_message(msg, sd_msg, &sid);
 577
 578                 if (ret != LDB_SUCCESS) {
 579                         return ret;
 580                 }
 581                 ret = acl_check_access_on_attribute(module,
 582                                                     msg,
 583                                                     sd,
 584                                                     sid,
 585                                                     SEC_STD_WRITE_OWNER,
 586                                                     NULL);
 587                 if (ret == LDB_SUCCESS) {
 588                         flags |= SECINFO_OWNER | SECINFO_GROUP;
 589                 }
 590                 ret = acl_check_access_on_attribute(module,
 591                                                     msg,
 592                                                     sd,
 593                                                     sid,
 594                                                     SEC_STD_WRITE_DAC,
 595                                                     NULL);
 596                 if (ret == LDB_SUCCESS) {
 597                         flags |= SECINFO_DACL;
 598                 }
 599                 ret = acl_check_access_on_attribute(module,
 600                                                     msg,
 601                                                     sd,
 602                                                     sid,
 603                                                     SEC_FLAG_SYSTEM_SECURITY,
 604                                                     NULL);
 605                 if (ret == LDB_SUCCESS) {
 606                         flags |= SECINFO_SACL;
 607                 }
 608         }
 609         ldb_msg_add_fmt(msg, "sDRightsEffective", "%u", flags);
 610         return LDB_SUCCESS;
 611 }
 612
 613 static int acl_add(struct ldb_module *module, struct ldb_request *req)
 614 {
 615         int ret;
 616         struct ldb_dn *parent = ldb_dn_get_parent(req, req->op.add.message->dn);
 617         struct ldb_context *ldb;
 618         const struct dsdb_schema *schema;
 619         struct ldb_message_element *oc_el;
 620         const struct GUID *guid;
 621         struct ldb_control *as_system = ldb_request_get_control(req, LDB_CONTROL_AS_SYSTEM_OID);
 622
 623         if (as_system != NULL) {
 624                 as_system->critical = 0;
 625         }
 626
 627         if (dsdb_module_am_system(module) || as_system) {
 628                 return ldb_next_request(module, req);
 629         }
 630
 631         if (ldb_dn_is_special(req->op.add.message->dn)) {
 632                 return ldb_next_request(module, req);
 633         }
 634         ldb = ldb_module_get_ctx(module);
 635         /* Creating an NC. There is probably something we should do here,
 636          * but we will establish that later */
 637         if ((ldb_dn_compare(req->op.add.message->dn, (ldb_get_schema_basedn(ldb))) == 0) ||
 638             (ldb_dn_compare(req->op.add.message->dn, (ldb_get_config_basedn(ldb))) == 0) ||
 639             (ldb_dn_compare(req->op.add.message->dn, (ldb_get_root_basedn(ldb))) == 0)) {
 640                 return ldb_next_request(module, req);
 641         }
 642
 643         schema = dsdb_get_schema(ldb, req);
 644         if (!schema) {
 645                 return LDB_ERR_OPERATIONS_ERROR;
 646         }
 647
 648         oc_el = ldb_msg_find_element(req->op.add.message, "objectClass");
 649         if (!oc_el || oc_el->num_values == 0) {
 650                 DEBUG(10,("acl:operation error %s\n", ldb_dn_get_linearized(req->op.add.message->dn)));
 651                 return ldb_module_done(req, NULL, NULL, LDB_ERR_OPERATIONS_ERROR);
 652         }
 653
 654         guid = class_schemaid_guid_by_lDAPDisplayName(schema,
 655                                                       (char *)oc_el->values[oc_el->num_values-1].data);
 656         ret = dsdb_module_check_access_on_dn(module, req, parent, SEC_ADS_CREATE_CHILD, guid);
 657         if (ret != LDB_SUCCESS) {
 658                 return ret;
 659         }
 660         return ldb_next_request(module, req);
 661 }
 662
 663 static int acl_modify(struct ldb_module *module, struct ldb_request *req)
 664 {
 665         int ret;
 666         struct ldb_context *ldb = ldb_module_get_ctx(module);
 667         const struct dsdb_schema *schema;
 668         unsigned int i;
 669         bool modify_sd = false;
 670         const struct GUID *guid;
 671         uint32_t access_granted;
 672         struct object_tree *root = NULL;
 673         struct object_tree *new_node = NULL;
 674         NTSTATUS status;
 675         struct ldb_result *acl_res;
 676         struct security_descriptor *sd;
 677         struct dom_sid *sid = NULL;
 678         struct ldb_control *as_system = ldb_request_get_control(req, LDB_CONTROL_AS_SYSTEM_OID);
 679         TALLOC_CTX *tmp_ctx = talloc_new(req);
 680         static const char *acl_attrs[] = {
 681                 "nTSecurityDescriptor",
 682                 "objectClass",
 683                 "objectSid",
 684                 NULL
 685         };
 686
 687         if (as_system != NULL) {
 688                 as_system->critical = 0;
 689         }
 690
 691         /* Don't print this debug statement if elements[0].name is going to be NULL */
 692         if(req->op.mod.message->num_elements > 0)
 693         {
 694                 DEBUG(10, ("ldb:acl_modify: %s\n", req->op.mod.message->elements[0].name));
 695         }
 696         if (dsdb_module_am_system(module) || as_system) {
 697                 return ldb_next_request(module, req);
 698         }
 699         if (ldb_dn_is_special(req->op.mod.message->dn)) {
 700                 return ldb_next_request(module, req);
 701         }
 702         ret = dsdb_module_search_dn(module, req, &acl_res, req->op.mod.message->dn,
 703                                     acl_attrs, 0);
 704
 705         if (ret != LDB_SUCCESS) {
 706                 return ret;
 707         }
 708
 709         schema = dsdb_get_schema(ldb, acl_res);
 710         if (!schema) {
 711                 talloc_free(acl_res);
 712                 return LDB_ERR_OPERATIONS_ERROR;
 713         }
 714
 715         ret = dsdb_get_sd_from_ldb_message(req, acl_res->msgs[0], &sd);
 716         if (ret != LDB_SUCCESS) {
 717                 DEBUG(10, ("acl_modify: cannot get descriptor\n"));
 718                 return ret;
 719         }
 720         /* Theoretically we pass the check if the object has no sd */
 721         if (!sd) {
 722                 return LDB_SUCCESS;
 723         }
 724
 725         guid = get_oc_guid_from_message(module, schema, acl_res->msgs[0]);
 726         if (!guid) {
 727                 DEBUG(10, ("acl_modify: cannot get guid\n"));
 728                 goto fail;
 729         }
 730
 731         ret = dsdb_get_dom_sid_from_ldb_message(req, acl_res->msgs[0], &sid);
 732         if (ret != LDB_SUCCESS) {
 733                 return LDB_ERR_OPERATIONS_ERROR;
 734         }
 735
 736         if (!insert_in_object_tree(tmp_ctx, guid, SEC_ADS_WRITE_PROP,
 737                                    &root, &new_node)) {
 738                 DEBUG(10, ("acl_modify: cannot add to object tree\n"));
 739                 goto fail;
 740         }
 741         for (i=0; i < req->op.mod.message->num_elements; i++){
 742                 const struct dsdb_attribute *attr;
 743                 /* clearTextPassword is not in schema */
 744                 if (strcmp("clearTextPassword", req->op.mod.message->elements[i].name) == 0) {
 745                         attr = dsdb_attribute_by_lDAPDisplayName(schema, "unicodePwd");
 746                 } else {
 747                         attr = dsdb_attribute_by_lDAPDisplayName(schema,
 748                                                                  req->op.mod.message->elements[i].name);
 749                 }
 750                 if (strcmp("nTSecurityDescriptor", req->op.mod.message->elements[i].name) == 0) {
 751                         modify_sd = true;
 752                 } else {
 753
 754                         if (!attr) {
 755                                 DEBUG(10, ("acl_modify: cannot find attribute %s\n",
 756                                            req->op.mod.message->elements[i].name));
 757                                 goto fail;
 758                         }
 759                         if (!insert_in_object_tree(tmp_ctx,
 760                                                    &attr->attributeSecurityGUID, SEC_ADS_WRITE_PROP,
 761                                                    &new_node, &new_node)) {
 762                                 DEBUG(10, ("acl_modify: cannot add to object tree securityGUID\n"));
 763                                 goto fail;
 764                         }
 765
 766                         if (!insert_in_object_tree(tmp_ctx,
 767                                                    &attr->schemaIDGUID, SEC_ADS_WRITE_PROP, &new_node, &new_node)) {
 768                                 DEBUG(10, ("acl_modify: cannot add to object tree attributeGUID\n"));
 769                                 goto fail;
 770                         }
 771                 }
 772         }
 773
 774         if (root->num_of_children > 0) {
 775                 status = sec_access_check_ds(sd, acl_user_token(module),
 776                                              SEC_ADS_WRITE_PROP,
 777                                              &access_granted,
 778                                              root,
 779                                              sid);
 780
 781                 if (!NT_STATUS_IS_OK(status)) {
 782                         DEBUG(10, ("Object %s nas no write property access\n",
 783                                    ldb_dn_get_linearized(req->op.mod.message->dn)));
 784                         dsdb_acl_debug(sd,
 785                                   acl_user_token(module),
 786                                   req->op.mod.message->dn,
 787                                   true,
 788                                   10);
 789                         talloc_free(tmp_ctx);
 790                         return LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS;
 791                 }
 792         }
 793         if (modify_sd) {
 794                 status = sec_access_check_ds(sd, acl_user_token(module),
 795                                              SEC_STD_WRITE_DAC,
 796                                              &access_granted,
 797                                              NULL,
 798                                              sid);
 799
 800                 if (!NT_STATUS_IS_OK(status)) {
 801                         DEBUG(10, ("Object %s nas no write dacl access\n",
 802                                    ldb_dn_get_linearized(req->op.mod.message->dn)));
 803                         dsdb_acl_debug(sd,
 804                                   acl_user_token(module),
 805                                   req->op.mod.message->dn,
 806                                   true,
 807                                   10);
 808                         talloc_free(tmp_ctx);
 809                         return LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS;
 810                 }
 811         }
 812
 813         talloc_free(tmp_ctx);
 814         return ldb_next_request(module, req);
 815 fail:
 816         talloc_free(tmp_ctx);
 817         return LDB_ERR_OPERATIONS_ERROR;
 818 }
 819
 820 /* similar to the modify for the time being.
 821  * We need to concider the special delete tree case, though - TODO */
 822 static int acl_delete(struct ldb_module *module, struct ldb_request *req)
 823 {
 824         int ret;
 825         struct ldb_dn *parent = ldb_dn_get_parent(req, req->op.del.dn);
 826         struct ldb_context *ldb;
 827         struct ldb_control *as_system = ldb_request_get_control(req, LDB_CONTROL_AS_SYSTEM_OID);
 828
 829         if (as_system != NULL) {
 830                 as_system->critical = 0;
 831         }
 832
 833         DEBUG(10, ("ldb:acl_delete: %s\n", ldb_dn_get_linearized(req->op.del.dn)));
 834         if (dsdb_module_am_system(module) || as_system) {
 835                 return ldb_next_request(module, req);
 836         }
 837
 838         if (ldb_dn_is_special(req->op.del.dn)) {
 839                 return ldb_next_request(module, req);
 840         }
 841         ldb = ldb_module_get_ctx(module);
 842         /* first check if we have delete object right */
 843         ret = dsdb_module_check_access_on_dn(module, req, req->op.del.dn, SEC_STD_DELETE, NULL);
 844         if (ret == LDB_SUCCESS) {
 845                 return ldb_next_request(module, req);
 846         }
 847
 848         /* Nope, we don't have delete object. Lets check if we have delete child on the parent */
 849         /* No parent, so check fails */
 850         if ((ldb_dn_compare(req->op.del.dn, (ldb_get_schema_basedn(ldb))) == 0) ||
 851             (ldb_dn_compare(req->op.del.dn, (ldb_get_config_basedn(ldb))) == 0) ||
 852             (ldb_dn_compare(req->op.del.dn, (ldb_get_root_basedn(ldb))) == 0)) {
 853                 DEBUG(10,("acl:deleting an NC\n"));
 854                 return ldb_module_done(req, NULL, NULL, LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS);
 855         }
 856
 857         ret = dsdb_module_check_access_on_dn(module, req, parent, SEC_ADS_DELETE_CHILD, NULL);
 858         if (ret != LDB_SUCCESS) {
 859                 return ret;
 860         }
 861         return ldb_next_request(module, req);
 862 }
 863
 864 static int acl_rename(struct ldb_module *module, struct ldb_request *req)
 865 {
 866         int ret;
 867         struct ldb_dn *oldparent = ldb_dn_get_parent(req, req->op.rename.olddn);
 868         struct ldb_dn *newparent = ldb_dn_get_parent(req, req->op.rename.newdn);
 869         const struct dsdb_schema *schema;
 870         struct ldb_context *ldb;
 871         struct security_descriptor *sd = NULL;
 872         struct dom_sid *sid = NULL;
 873         struct ldb_result *acl_res;
 874         const struct GUID *guid;
 875         struct object_tree *root = NULL;
 876         struct object_tree *new_node = NULL;
 877         struct ldb_control *as_system = ldb_request_get_control(req, LDB_CONTROL_AS_SYSTEM_OID);
 878         TALLOC_CTX *tmp_ctx = talloc_new(req);
 879         NTSTATUS status;
 880         uint32_t access_granted;
 881         const char *rdn_name;
 882         static const char *acl_attrs[] = {
 883                 "nTSecurityDescriptor",
 884                 "objectClass",
 885                 "objectSid",
 886                 NULL
 887         };
 888
 889         if (as_system != NULL) {
 890                 as_system->critical = 0;
 891         }
 892
 893         DEBUG(10, ("ldb:acl_rename: %s\n", ldb_dn_get_linearized(req->op.rename.olddn)));
 894         if (dsdb_module_am_system(module) || as_system) {
 895                 return ldb_next_request(module, req);
 896         }
 897         if (ldb_dn_is_special(req->op.rename.olddn)) {
 898                 return ldb_next_request(module, req);
 899         }
 900         ldb = ldb_module_get_ctx(module);
 901
 902         ret = dsdb_module_search_dn(module, req, &acl_res, req->op.rename.olddn,
 903                                     acl_attrs, DSDB_SEARCH_SHOW_DELETED);
 904         /* we sould be able to find the parent */
 905         if (ret != LDB_SUCCESS) {
 906                 DEBUG(10,("acl: failed to find object %s\n",
 907                           ldb_dn_get_linearized(req->op.rename.olddn)));
 908                 return ret;
 909         }
 910
 911         schema = dsdb_get_schema(ldb, acl_res);
 912         if (!schema) {
 913                 talloc_free(acl_res);
 914                 return LDB_ERR_OPERATIONS_ERROR;
 915         }
 916
 917         guid = get_oc_guid_from_message(module, schema, acl_res->msgs[0]);
 918         if (!insert_in_object_tree(tmp_ctx, guid, SEC_ADS_WRITE_PROP,
 919                                    &root, &new_node)) {
 920                 return LDB_ERR_OPERATIONS_ERROR;
 921         };
 922
 923         guid = attribute_schemaid_guid_by_lDAPDisplayName(schema,
 924                                                           "name");
 925         if (!insert_in_object_tree(tmp_ctx, guid, SEC_ADS_WRITE_PROP,
 926                                    &new_node, &new_node)) {
 927                 return LDB_ERR_OPERATIONS_ERROR;
 928         };
 929
 930         rdn_name = ldb_dn_get_rdn_name(req->op.rename.olddn);
 931         if (rdn_name == NULL) {
 932                 return LDB_ERR_OPERATIONS_ERROR;
 933         }
 934         guid = attribute_schemaid_guid_by_lDAPDisplayName(schema,
 935                                                           rdn_name);
 936         if (!insert_in_object_tree(tmp_ctx, guid, SEC_ADS_WRITE_PROP,
 937                                    &new_node, &new_node)) {
 938                 return LDB_ERR_OPERATIONS_ERROR;
 939         };
 940
 941         ret = dsdb_get_sd_from_ldb_message(req, acl_res->msgs[0], &sd);
 942
 943         if (ret != LDB_SUCCESS) {
 944                 return LDB_ERR_OPERATIONS_ERROR;
 945         }
 946         /* Theoretically we pass the check if the object has no sd */
 947         if (!sd) {
 948                 return LDB_SUCCESS;
 949         }
 950         ret = dsdb_get_dom_sid_from_ldb_message(req, acl_res->msgs[0], &sid);
 951         if (ret != LDB_SUCCESS) {
 952                 return LDB_ERR_OPERATIONS_ERROR;
 953         }
 954
 955         status = sec_access_check_ds(sd, acl_user_token(module),
 956                                      SEC_ADS_WRITE_PROP,
 957                                      &access_granted,
 958                                      root,
 959                                      sid);
 960
 961         if (!NT_STATUS_IS_OK(status)) {
 962                 DEBUG(10, ("Object %s nas no wp on name\n",
 963                            ldb_dn_get_linearized(req->op.rename.olddn)));
 964                 dsdb_acl_debug(sd,
 965                           acl_user_token(module),
 966                           req->op.rename.olddn,
 967                           true,
 968                           10);
 969                 return LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS;
 970         }
 971
 972         if (ldb_dn_compare(oldparent, newparent) == 0) {
 973                 /* regular rename, not move, nothing more to do */
 974                 return ldb_next_request(module, req);
 975         }
 976
 977         /* What exactly to do in this case? It would fail anyway.. */
 978         if ((ldb_dn_compare(req->op.rename.newdn, (ldb_get_schema_basedn(ldb))) == 0) ||
 979             (ldb_dn_compare(req->op.rename.newdn, (ldb_get_config_basedn(ldb))) == 0) ||
 980             (ldb_dn_compare(req->op.rename.newdn, (ldb_get_root_basedn(ldb))) == 0)) {
 981                 DEBUG(10,("acl:moving as an NC\n"));
 982                 return LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS;
 983         }
 984         /* new parent should have create child */
 985         talloc_free(tmp_ctx);
 986         tmp_ctx = talloc_new(req);
 987         root = NULL;
 988         new_node = NULL;
 989         guid = get_oc_guid_from_message(module, schema, acl_res->msgs[0]);
 990         if (!guid) {
 991                 DEBUG(10,("acl:renamed object has no object class\n"));
 992                 return ldb_module_done(req, NULL, NULL,  LDB_ERR_OPERATIONS_ERROR);
 993         }
 994
 995         ret = dsdb_module_check_access_on_dn(module, req, newparent, SEC_ADS_CREATE_CHILD, guid);
 996         if (ret != LDB_SUCCESS) {
 997                 DEBUG(10,("acl:access_denied renaming %s", ldb_dn_get_linearized(req->op.rename.olddn)));
 998                 return ret;
 999         }
1000         /* do we have delete object on the object? */
1001
1002         status = sec_access_check_ds(sd, acl_user_token(module),
1003                                      SEC_STD_DELETE,
1004                                      &access_granted,
1005                                      NULL,
1006                                      sid);
1007
1008         if (NT_STATUS_IS_OK(status)) {
1009                 return ldb_next_request(module, req);
1010         }
1011         /* what about delete child on the current parent */
1012         ret = dsdb_module_check_access_on_dn(module, req, oldparent, SEC_ADS_DELETE_CHILD, NULL);
1013         if (ret != LDB_SUCCESS) {
1014                 DEBUG(10,("acl:access_denied renaming %s", ldb_dn_get_linearized(req->op.rename.olddn)));
1015                 return ldb_module_done(req, NULL, NULL, ret);
1016         }
1017         return ldb_next_request(module, req);
1018 }
1019
1020 static int acl_search_callback(struct ldb_request *req, struct ldb_reply *ares)
1021 {
1022         struct ldb_context *ldb;
1023         struct acl_context *ac;
1024         struct acl_private *data;
1025         struct ldb_result *acl_res;
1026         static const char *acl_attrs[] = {
1027                 "objectClass",
1028                 "nTSecurityDescriptor",
1029                 "objectSid",
1030                 NULL
1031         };
1032         int ret, i;
1033
1034         ac = talloc_get_type(req->context, struct acl_context);
1035         data = talloc_get_type(ldb_module_get_private(ac->module), struct acl_private);
1036         ldb = ldb_module_get_ctx(ac->module);
1037
1038         if (!ares) {
1039                 return ldb_module_done(ac->req, NULL, NULL,
1040                                        LDB_ERR_OPERATIONS_ERROR);
1041         }
1042         if (ares->error != LDB_SUCCESS) {
1043                 return ldb_module_done(ac->req, ares->controls,
1044                                        ares->response, ares->error);
1045         }
1046
1047         switch (ares->type) {
1048         case LDB_REPLY_ENTRY:
1049                 if (ac->allowedAttributes
1050                     || ac->allowedChildClasses
1051                     || ac->allowedChildClassesEffective
1052                     || ac->allowedAttributesEffective
1053                     || ac->sDRightsEffective) {
1054                         ret = dsdb_module_search_dn(ac->module, ac, &acl_res, ares->message->dn,
1055                                                     acl_attrs, 0);
1056                         if (ret != LDB_SUCCESS) {
1057                                 return ldb_module_done(ac->req, NULL, NULL, ret);
1058                         }
1059                         if (ac->allowedAttributes || ac->allowedAttributesEffective) {
1060                                 ret = acl_allowedAttributes(ac->module, ac->schema, acl_res->msgs[0], ares->message, ac);
1061                                 if (ret != LDB_SUCCESS) {
1062                                         return ldb_module_done(ac->req, NULL, NULL, ret);
1063                                 }
1064                         }
1065                         if (ac->allowedChildClasses) {
1066                                 ret = acl_childClasses(ac->module, ac->schema, acl_res->msgs[0],
1067                                                        ares->message, "allowedChildClasses");
1068                                 if (ret != LDB_SUCCESS) {
1069                                         return ldb_module_done(ac->req, NULL, NULL, ret);
1070                                 }
1071                         }
1072                         if (ac->allowedChildClassesEffective) {
1073                                 ret = acl_childClassesEffective(ac->module, ac->schema,
1074                                                                 acl_res->msgs[0], ares->message, ac);
1075                                 if (ret != LDB_SUCCESS) {
1076                                         return ldb_module_done(ac->req, NULL, NULL, ret);
1077                                 }
1078                         }
1079                         if (ac->sDRightsEffective) {
1080                                 ret = acl_sDRightsEffective(ac->module,
1081                                                             acl_res->msgs[0], ares->message, ac);
1082                                 if (ret != LDB_SUCCESS) {
1083                                         return ldb_module_done(ac->req, NULL, NULL, ret);
1084                                 }
1085                         }
1086                 }
1087                 if (data && data->password_attrs) {
1088                         if (!ac->am_system) {
1089                                 for (i = 0; data->password_attrs[i]; i++) {
1090                                         ldb_msg_remove_attr(ares->message, data->password_attrs[i]);
1091                                 }
1092                         }
1093                 }
1094                 return ldb_module_send_entry(ac->req, ares->message, ares->controls);
1095
1096         case LDB_REPLY_REFERRAL:
1097                 return ldb_module_send_referral(ac->req, ares->referral);
1098
1099         case LDB_REPLY_DONE:
1100                 return ldb_module_done(ac->req, ares->controls,
1101                                        ares->response, LDB_SUCCESS);
1102
1103         }
1104         return LDB_SUCCESS;
1105 }
1106
1107 static int acl_search(struct ldb_module *module, struct ldb_request *req)
1108 {
1109         struct ldb_context *ldb;
1110         struct acl_context *ac;
1111         struct ldb_request *down_req;
1112         struct acl_private *data;
1113         int ret, i;
1114
1115         ldb = ldb_module_get_ctx(module);
1116
1117         ac = talloc_zero(req, struct acl_context);
1118         if (ac == NULL) {
1119                 ldb_oom(ldb);
1120                 return LDB_ERR_OPERATIONS_ERROR;
1121         }
1122         data = talloc_get_type(ldb_module_get_private(module), struct acl_private);
1123
1124         ac->module = module;
1125         ac->req = req;
1126         ac->am_system = dsdb_module_am_system(module);
1127         ac->allowedAttributes = ldb_attr_in_list(req->op.search.attrs, "allowedAttributes");
1128         ac->allowedAttributesEffective = ldb_attr_in_list(req->op.search.attrs, "allowedAttributesEffective");
1129         ac->allowedChildClasses = ldb_attr_in_list(req->op.search.attrs, "allowedChildClasses");
1130         ac->allowedChildClassesEffective = ldb_attr_in_list(req->op.search.attrs, "allowedChildClassesEffective");
1131         ac->sDRightsEffective = ldb_attr_in_list(req->op.search.attrs, "sDRightsEffective");
1132         ac->schema = dsdb_get_schema(ldb, ac);
1133
1134         /* replace any attributes in the parse tree that are private,
1135            so we don't allow a search for 'userPassword=penguin',
1136            just as we would not allow that attribute to be returned */
1137         if (ac->am_system) {
1138                 /* FIXME: We should copy the tree and keep the original unmodified. */
1139                 /* remove password attributes */
1140                 if (data && data->password_attrs) {
1141                         for (i = 0; data->password_attrs[i]; i++) {
1142                                 ldb_parse_tree_attr_replace(req->op.search.tree,
1143                                                             data->password_attrs[i],
1144                                                             "kludgeACLredactedattribute");
1145                         }
1146                 }
1147         }
1148         ret = ldb_build_search_req_ex(&down_req,
1149                                       ldb, ac,
1150                                       req->op.search.base,
1151                                       req->op.search.scope,
1152                                       req->op.search.tree,
1153                                       req->op.search.attrs,
1154                                       req->controls,
1155                                       ac, acl_search_callback,
1156                                       req);
1157         if (ret != LDB_SUCCESS) {
1158                 return ret;
1159         }
1160         /* perform the search */
1161         return ldb_next_request(module, down_req);
1162 }
1163
1164 _PUBLIC_ const struct ldb_module_ops ldb_acl_module_ops = {
1165         .name              = "acl",
1166         .search            = acl_search,
1167         .add               = acl_add,
1168         .modify            = acl_modify,
1169         .del               = acl_delete,
1170         .rename            = acl_rename,
1171         .init_context      = acl_module_init
1172 };