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
 378                 sid = samdb_result_dom_sid(mem_ctx, sd_msg, "objectSid");
 379                 for (i=0; attr_list && attr_list[i]; i++) {
 380                         const struct dsdb_attribute *attr = dsdb_attribute_by_lDAPDisplayName(schema,
 381                                                                                         attr_list[i]);
 382                         if (!attr) {
 383                                 return LDB_ERR_OPERATIONS_ERROR;
 384                         }
 385                         /* remove constructed attributes */
 386                         if (attr->systemFlags & DS_FLAG_ATTR_IS_CONSTRUCTED
 387                             || attr->systemOnly
 388                             || (attr->linkID != 0 && attr->linkID % 2 != 0 )) {
 389                                 continue;
 390                         }
 391                         ret = acl_check_access_on_attribute(module,
 392                                                             msg,
 393                                                             sd,
 394                                                             sid,
 395                                                             SEC_ADS_WRITE_PROP,
 396                                                             attr);
 397                         if (ret == LDB_SUCCESS) {
 398                                 ldb_msg_add_string(msg, "allowedAttributesEffective", attr_list[i]);
 399                         }
 400                 }
 401         }
 402         return LDB_SUCCESS;
 403 }
 404
 405 static int acl_childClasses(struct ldb_module *module,
 406                             const struct dsdb_schema *schema,
 407                             struct ldb_message *sd_msg,
 408                             struct ldb_message *msg,
 409                             const char *attrName)
 410 {
 411         struct ldb_message_element *oc_el;
 412         struct ldb_message_element *allowedClasses;
 413         const struct dsdb_class *sclass;
 414         int i, j, ret;
 415
 416         /* If we don't have a schema yet, we can't do anything... */
 417         if (schema == NULL) {
 418                 ldb_asprintf_errstring(ldb_module_get_ctx(module), "cannot add childClassesEffective to %s because no schema is loaded", ldb_dn_get_linearized(msg->dn));
 419                 return LDB_ERR_OPERATIONS_ERROR;
 420         }
 421
 422         /* Must remove any existing attribute, or else confusion reins */
 423         ldb_msg_remove_attr(msg, attrName);
 424         ret = ldb_msg_add_empty(msg, attrName, 0, &allowedClasses);
 425         if (ret != LDB_SUCCESS) {
 426                 return ret;
 427         }
 428
 429         oc_el = ldb_msg_find_element(sd_msg, "objectClass");
 430
 431         for (i=0; oc_el && i < oc_el->num_values; i++) {
 432                 sclass = dsdb_class_by_lDAPDisplayName_ldb_val(schema, &oc_el->values[i]);
 433                 if (!sclass) {
 434                         /* We don't know this class?  what is going on? */
 435                         continue;
 436                 }
 437
 438                 for (j=0; sclass->possibleInferiors && sclass->possibleInferiors[j]; j++) {
 439                         ldb_msg_add_string(msg, attrName, sclass->possibleInferiors[j]);
 440                 }
 441         }
 442         if (allowedClasses->num_values > 1) {
 443                 TYPESAFE_QSORT(allowedClasses->values, allowedClasses->num_values, data_blob_cmp);
 444                 for (i=1 ; i < allowedClasses->num_values; i++) {
 445                         struct ldb_val *val1 = &allowedClasses->values[i-1];
 446                         struct ldb_val *val2 = &allowedClasses->values[i];
 447                         if (data_blob_cmp(val1, val2) == 0) {
 448                                 memmove(val1, val2, (allowedClasses->num_values - i) * sizeof(struct ldb_val));
 449                                 allowedClasses->num_values--;
 450                                 i--;
 451                         }
 452                 }
 453         }
 454
 455         return LDB_SUCCESS;
 456 }
 457
 458 static int acl_childClassesEffective(struct ldb_module *module,
 459                                      const struct dsdb_schema *schema,
 460                                      struct ldb_message *sd_msg,
 461                                      struct ldb_message *msg,
 462                                      struct acl_context *ac)
 463 {
 464         struct ldb_message_element *oc_el;
 465         struct ldb_message_element *allowedClasses = NULL;
 466         const struct dsdb_class *sclass;
 467         struct security_descriptor *sd;
 468         struct ldb_control *as_system = ldb_request_get_control(ac->req,
 469                                                                 LDB_CONTROL_AS_SYSTEM_OID);
 470         struct dom_sid *sid = NULL;
 471         int i, j, ret;
 472
 473         if (as_system != NULL) {
 474                 as_system->critical = 0;
 475         }
 476
 477         if (ac->am_system || as_system) {
 478                 return acl_childClasses(module, schema, sd_msg, msg, "allowedChildClassesEffective");
 479         }
 480
 481         /* If we don't have a schema yet, we can't do anything... */
 482         if (schema == NULL) {
 483                 ldb_asprintf_errstring(ldb_module_get_ctx(module), "cannot add allowedChildClassesEffective to %s because no schema is loaded", ldb_dn_get_linearized(msg->dn));
 484                 return LDB_ERR_OPERATIONS_ERROR;
 485         }
 486
 487         /* Must remove any existing attribute, or else confusion reins */
 488         ldb_msg_remove_attr(msg, "allowedChildClassesEffective");
 489
 490         oc_el = ldb_msg_find_element(sd_msg, "objectClass");
 491         ret = dsdb_get_sd_from_ldb_message(msg, sd_msg, &sd);
 492         if (ret != LDB_SUCCESS) {
 493                 return ret;
 494         }
 495
 496         sid = samdb_result_dom_sid(msg, sd_msg, "objectSid");
 497         for (i=0; oc_el && i < oc_el->num_values; i++) {
 498                 sclass = dsdb_class_by_lDAPDisplayName_ldb_val(schema, &oc_el->values[i]);
 499                 if (!sclass) {
 500                         /* We don't know this class?  what is going on? */
 501                         continue;
 502                 }
 503
 504                 for (j=0; sclass->possibleInferiors && sclass->possibleInferiors[j]; j++) {
 505                         ret = acl_check_access_on_class(module,
 506                                                         schema,
 507                                                         msg,
 508                                                         sd,
 509                                                         sid,
 510                                                         SEC_ADS_CREATE_CHILD,
 511                                                         sclass->possibleInferiors[j]);
 512                         if (ret == LDB_SUCCESS) {
 513                                 ldb_msg_add_string(msg, "allowedChildClassesEffective",
 514                                                    sclass->possibleInferiors[j]);
 515                         }
 516                 }
 517         }
 518         allowedClasses = ldb_msg_find_element(msg, "allowedChildClassesEffective");
 519         if (!allowedClasses) {
 520                 return LDB_SUCCESS;
 521         }
 522
 523         if (allowedClasses->num_values > 1) {
 524                 TYPESAFE_QSORT(allowedClasses->values, allowedClasses->num_values, data_blob_cmp);
 525                 for (i=1 ; i < allowedClasses->num_values; i++) {
 526                         struct ldb_val *val1 = &allowedClasses->values[i-1];
 527                         struct ldb_val *val2 = &allowedClasses->values[i];
 528                         if (data_blob_cmp(val1, val2) == 0) {
 529                                 memmove(val1, val2, (allowedClasses->num_values - i) * sizeof( struct ldb_val));
 530                                 allowedClasses->num_values--;
 531                                 i--;
 532                         }
 533                 }
 534         }
 535         return LDB_SUCCESS;
 536 }
 537
 538 static int acl_sDRightsEffective(struct ldb_module *module,
 539                                  struct ldb_message *sd_msg,
 540                                  struct ldb_message *msg,
 541                                  struct acl_context *ac)
 542 {
 543         struct ldb_message_element *rightsEffective;
 544         int ret;
 545         struct security_descriptor *sd;
 546         struct ldb_control *as_system = ldb_request_get_control(ac->req,
 547                                                                 LDB_CONTROL_AS_SYSTEM_OID);
 548         struct dom_sid *sid = NULL;
 549         uint32_t flags = 0;
 550
 551         if (as_system != NULL) {
 552                 as_system->critical = 0;
 553         }
 554
 555         /* Must remove any existing attribute, or else confusion reins */
 556         ldb_msg_remove_attr(msg, "sDRightsEffective");
 557         ret = ldb_msg_add_empty(msg, "sDRightsEffective", 0, &rightsEffective);
 558         if (ret != LDB_SUCCESS) {
 559                 return ret;
 560         }
 561         if (ac->am_system || as_system) {
 562                 flags = SECINFO_OWNER | SECINFO_GROUP |  SECINFO_SACL |  SECINFO_DACL;
 563         }
 564         else {
 565                 /* Get the security descriptor from the message */
 566                 ret = dsdb_get_sd_from_ldb_message(msg, sd_msg, &sd);
 567                 if (ret != LDB_SUCCESS) {
 568                         return ret;
 569                 }
 570                 sid = samdb_result_dom_sid(msg, sd_msg, "objectSid");
 571                 ret = acl_check_access_on_attribute(module,
 572                                                     msg,
 573                                                     sd,
 574                                                     sid,
 575                                                     SEC_STD_WRITE_OWNER,
 576                                                     NULL);
 577                 if (ret == LDB_SUCCESS) {
 578                         flags |= SECINFO_OWNER | SECINFO_GROUP;
 579                 }
 580                 ret = acl_check_access_on_attribute(module,
 581                                                     msg,
 582                                                     sd,
 583                                                     sid,
 584                                                     SEC_STD_WRITE_DAC,
 585                                                     NULL);
 586                 if (ret == LDB_SUCCESS) {
 587                         flags |= SECINFO_DACL;
 588                 }
 589                 ret = acl_check_access_on_attribute(module,
 590                                                     msg,
 591                                                     sd,
 592                                                     sid,
 593                                                     SEC_FLAG_SYSTEM_SECURITY,
 594                                                     NULL);
 595                 if (ret == LDB_SUCCESS) {
 596                         flags |= SECINFO_SACL;
 597                 }
 598         }
 599         ldb_msg_add_fmt(msg, "sDRightsEffective", "%u", flags);
 600         return LDB_SUCCESS;
 601 }
 602
 603 static int acl_add(struct ldb_module *module, struct ldb_request *req)
 604 {
 605         int ret;
 606         struct ldb_dn *parent = ldb_dn_get_parent(req, req->op.add.message->dn);
 607         struct ldb_context *ldb;
 608         const struct dsdb_schema *schema;
 609         struct ldb_message_element *oc_el;
 610         const struct GUID *guid;
 611         struct ldb_control *as_system = ldb_request_get_control(req, LDB_CONTROL_AS_SYSTEM_OID);
 612
 613         if (as_system != NULL) {
 614                 as_system->critical = 0;
 615         }
 616
 617         if (dsdb_module_am_system(module) || as_system) {
 618                 return ldb_next_request(module, req);
 619         }
 620
 621         if (ldb_dn_is_special(req->op.add.message->dn)) {
 622                 return ldb_next_request(module, req);
 623         }
 624         ldb = ldb_module_get_ctx(module);
 625         /* Creating an NC. There is probably something we should do here,
 626          * but we will establish that later */
 627         /* FIXME: this has to be made dynamic at some point */
 628         if ((ldb_dn_compare(req->op.add.message->dn, (ldb_get_schema_basedn(ldb))) == 0) ||
 629             (ldb_dn_compare(req->op.add.message->dn, (ldb_get_config_basedn(ldb))) == 0) ||
 630             (ldb_dn_compare(req->op.add.message->dn, (ldb_get_default_basedn(ldb))) == 0) ||
 631             (ldb_dn_compare(req->op.add.message->dn, (ldb_get_root_basedn(ldb))) == 0)) {
 632                 return ldb_next_request(module, req);
 633         }
 634
 635         schema = dsdb_get_schema(ldb, req);
 636         if (!schema) {
 637                 return LDB_ERR_OPERATIONS_ERROR;
 638         }
 639
 640         oc_el = ldb_msg_find_element(req->op.add.message, "objectClass");
 641         if (!oc_el || oc_el->num_values == 0) {
 642                 DEBUG(10,("acl:operation error %s\n", ldb_dn_get_linearized(req->op.add.message->dn)));
 643                 return ldb_module_done(req, NULL, NULL, LDB_ERR_OPERATIONS_ERROR);
 644         }
 645
 646         guid = class_schemaid_guid_by_lDAPDisplayName(schema,
 647                                                       (char *)oc_el->values[oc_el->num_values-1].data);
 648         ret = dsdb_module_check_access_on_dn(module, req, parent, SEC_ADS_CREATE_CHILD, guid);
 649         if (ret != LDB_SUCCESS) {
 650                 return ret;
 651         }
 652         return ldb_next_request(module, req);
 653 }
 654
 655 static int acl_modify(struct ldb_module *module, struct ldb_request *req)
 656 {
 657         int ret;
 658         struct ldb_context *ldb = ldb_module_get_ctx(module);
 659         const struct dsdb_schema *schema;
 660         unsigned int i;
 661         bool modify_sd = false;
 662         const struct GUID *guid;
 663         uint32_t access_granted;
 664         struct object_tree *root = NULL;
 665         struct object_tree *new_node = NULL;
 666         NTSTATUS status;
 667         struct ldb_result *acl_res;
 668         struct security_descriptor *sd;
 669         struct dom_sid *sid = NULL;
 670         struct ldb_control *as_system = ldb_request_get_control(req, LDB_CONTROL_AS_SYSTEM_OID);
 671         TALLOC_CTX *tmp_ctx = talloc_new(req);
 672         static const char *acl_attrs[] = {
 673                 "nTSecurityDescriptor",
 674                 "objectClass",
 675                 "objectSid",
 676                 NULL
 677         };
 678
 679         if (as_system != NULL) {
 680                 as_system->critical = 0;
 681         }
 682
 683         /* Don't print this debug statement if elements[0].name is going to be NULL */
 684         if(req->op.mod.message->num_elements > 0)
 685         {
 686                 DEBUG(10, ("ldb:acl_modify: %s\n", req->op.mod.message->elements[0].name));
 687         }
 688         if (dsdb_module_am_system(module) || as_system) {
 689                 return ldb_next_request(module, req);
 690         }
 691         if (ldb_dn_is_special(req->op.mod.message->dn)) {
 692                 return ldb_next_request(module, req);
 693         }
 694         ret = dsdb_module_search_dn(module, req, &acl_res, req->op.mod.message->dn,
 695                                     acl_attrs, 0);
 696
 697         if (ret != LDB_SUCCESS) {
 698                 return ret;
 699         }
 700
 701         schema = dsdb_get_schema(ldb, acl_res);
 702         if (!schema) {
 703                 talloc_free(acl_res);
 704                 return LDB_ERR_OPERATIONS_ERROR;
 705         }
 706
 707         ret = dsdb_get_sd_from_ldb_message(req, acl_res->msgs[0], &sd);
 708         if (ret != LDB_SUCCESS) {
 709                 DEBUG(10, ("acl_modify: cannot get descriptor\n"));
 710                 return ret;
 711         }
 712         /* Theoretically we pass the check if the object has no sd */
 713         if (!sd) {
 714                 return LDB_SUCCESS;
 715         }
 716
 717         guid = get_oc_guid_from_message(module, schema, acl_res->msgs[0]);
 718         if (!guid) {
 719                 DEBUG(10, ("acl_modify: cannot get guid\n"));
 720                 goto fail;
 721         }
 722         sid = samdb_result_dom_sid(req, acl_res->msgs[0], "objectSid");
 723         if (!insert_in_object_tree(tmp_ctx, guid, SEC_ADS_WRITE_PROP,
 724                                    &root, &new_node)) {
 725                 DEBUG(10, ("acl_modify: cannot add to object tree\n"));
 726                 goto fail;
 727         }
 728         for (i=0; i < req->op.mod.message->num_elements; i++){
 729                 const struct dsdb_attribute *attr;
 730                 /* clearTextPassword is not in schema */
 731                 if (strcmp("clearTextPassword", req->op.mod.message->elements[i].name) == 0) {
 732                         attr = dsdb_attribute_by_lDAPDisplayName(schema, "unicodePwd");
 733                 } else {
 734                         attr = dsdb_attribute_by_lDAPDisplayName(schema,
 735                                                                  req->op.mod.message->elements[i].name);
 736                 }
 737                 if (strcmp("nTSecurityDescriptor", req->op.mod.message->elements[i].name) == 0) {
 738                         modify_sd = true;
 739                 } else {
 740
 741                         if (!attr) {
 742                                 DEBUG(10, ("acl_modify: cannot find attribute %s\n",
 743                                            req->op.mod.message->elements[i].name));
 744                                 goto fail;
 745                         }
 746                         if (!insert_in_object_tree(tmp_ctx,
 747                                                    &attr->attributeSecurityGUID, SEC_ADS_WRITE_PROP,
 748                                                    &new_node, &new_node)) {
 749                                 DEBUG(10, ("acl_modify: cannot add to object tree securityGUID\n"));
 750                                 goto fail;
 751                         }
 752
 753                         if (!insert_in_object_tree(tmp_ctx,
 754                                                    &attr->schemaIDGUID, SEC_ADS_WRITE_PROP, &new_node, &new_node)) {
 755                                 DEBUG(10, ("acl_modify: cannot add to object tree attributeGUID\n"));
 756                                 goto fail;
 757                         }
 758                 }
 759         }
 760
 761         if (root->num_of_children > 0) {
 762                 status = sec_access_check_ds(sd, acl_user_token(module),
 763                                              SEC_ADS_WRITE_PROP,
 764                                              &access_granted,
 765                                              root,
 766                                              sid);
 767
 768                 if (!NT_STATUS_IS_OK(status)) {
 769                         DEBUG(10, ("Object %s nas no write property access\n",
 770                                    ldb_dn_get_linearized(req->op.mod.message->dn)));
 771                         dsdb_acl_debug(sd,
 772                                   acl_user_token(module),
 773                                   req->op.mod.message->dn,
 774                                   true,
 775                                   10);
 776                         talloc_free(tmp_ctx);
 777                         return LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS;
 778                 }
 779         }
 780         if (modify_sd) {
 781                 status = sec_access_check_ds(sd, acl_user_token(module),
 782                                              SEC_STD_WRITE_DAC,
 783                                              &access_granted,
 784                                              NULL,
 785                                              sid);
 786
 787                 if (!NT_STATUS_IS_OK(status)) {
 788                         DEBUG(10, ("Object %s nas no write dacl access\n",
 789                                    ldb_dn_get_linearized(req->op.mod.message->dn)));
 790                         dsdb_acl_debug(sd,
 791                                   acl_user_token(module),
 792                                   req->op.mod.message->dn,
 793                                   true,
 794                                   10);
 795                         talloc_free(tmp_ctx);
 796                         return LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS;
 797                 }
 798         }
 799
 800         talloc_free(tmp_ctx);
 801         return ldb_next_request(module, req);
 802 fail:
 803         talloc_free(tmp_ctx);
 804         return LDB_ERR_OPERATIONS_ERROR;
 805 }
 806
 807 /* similar to the modify for the time being.
 808  * We need to concider the special delete tree case, though - TODO */
 809 static int acl_delete(struct ldb_module *module, struct ldb_request *req)
 810 {
 811         int ret;
 812         struct ldb_dn *parent = ldb_dn_get_parent(req, req->op.del.dn);
 813         struct ldb_context *ldb;
 814         struct ldb_control *as_system = ldb_request_get_control(req, LDB_CONTROL_AS_SYSTEM_OID);
 815
 816         if (as_system != NULL) {
 817                 as_system->critical = 0;
 818         }
 819
 820         DEBUG(10, ("ldb:acl_delete: %s\n", ldb_dn_get_linearized(req->op.del.dn)));
 821         if (dsdb_module_am_system(module) || as_system) {
 822                 return ldb_next_request(module, req);
 823         }
 824
 825         if (ldb_dn_is_special(req->op.del.dn)) {
 826                 return ldb_next_request(module, req);
 827         }
 828         ldb = ldb_module_get_ctx(module);
 829         /* first check if we have delete object right */
 830         ret = dsdb_module_check_access_on_dn(module, req, req->op.del.dn, SEC_STD_DELETE, NULL);
 831         if (ret == LDB_SUCCESS) {
 832                 return ldb_next_request(module, req);
 833         }
 834
 835         /* Nope, we don't have delete object. Lets check if we have delete child on the parent */
 836         /* No parent, so check fails */
 837         /* FIXME: this has to be made dynamic at some point */
 838         if ((ldb_dn_compare(req->op.del.dn, (ldb_get_schema_basedn(ldb))) == 0) ||
 839             (ldb_dn_compare(req->op.del.dn, (ldb_get_config_basedn(ldb))) == 0) ||
 840             (ldb_dn_compare(req->op.del.dn, (ldb_get_default_basedn(ldb))) == 0) ||
 841             (ldb_dn_compare(req->op.del.dn, (ldb_get_root_basedn(ldb))) == 0)) {
 842                 DEBUG(10,("acl:deleting an NC\n"));
 843                 return ldb_module_done(req, NULL, NULL, LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS);
 844         }
 845
 846         ret = dsdb_module_check_access_on_dn(module, req, parent, SEC_ADS_DELETE_CHILD, NULL);
 847         if (ret != LDB_SUCCESS) {
 848                 return ret;
 849         }
 850         return ldb_next_request(module, req);
 851 }
 852
 853 static int acl_rename(struct ldb_module *module, struct ldb_request *req)
 854 {
 855         int ret;
 856         struct ldb_dn *oldparent = ldb_dn_get_parent(req, req->op.rename.olddn);
 857         struct ldb_dn *newparent = ldb_dn_get_parent(req, req->op.rename.newdn);
 858         const struct dsdb_schema *schema;
 859         struct ldb_context *ldb;
 860         struct security_descriptor *sd = NULL;
 861         struct dom_sid *sid = NULL;
 862         struct ldb_result *acl_res;
 863         const struct GUID *guid;
 864         struct object_tree *root = NULL;
 865         struct object_tree *new_node = NULL;
 866         struct ldb_control *as_system = ldb_request_get_control(req, LDB_CONTROL_AS_SYSTEM_OID);
 867         TALLOC_CTX *tmp_ctx = talloc_new(req);
 868         NTSTATUS status;
 869         uint32_t access_granted;
 870         const char *rdn_name;
 871         static const char *acl_attrs[] = {
 872                 "nTSecurityDescriptor",
 873                 "objectClass",
 874                 "objectSid",
 875                 NULL
 876         };
 877
 878         if (as_system != NULL) {
 879                 as_system->critical = 0;
 880         }
 881
 882         DEBUG(10, ("ldb:acl_rename: %s\n", ldb_dn_get_linearized(req->op.rename.olddn)));
 883         if (dsdb_module_am_system(module) || as_system) {
 884                 return ldb_next_request(module, req);
 885         }
 886         if (ldb_dn_is_special(req->op.rename.olddn)) {
 887                 return ldb_next_request(module, req);
 888         }
 889         ldb = ldb_module_get_ctx(module);
 890
 891         ret = dsdb_module_search_dn(module, req, &acl_res, req->op.rename.olddn,
 892                                     acl_attrs, DSDB_SEARCH_SHOW_DELETED);
 893         /* we sould be able to find the parent */
 894         if (ret != LDB_SUCCESS) {
 895                 DEBUG(10,("acl: failed to find object %s\n",
 896                           ldb_dn_get_linearized(req->op.rename.olddn)));
 897                 return ret;
 898         }
 899
 900         schema = dsdb_get_schema(ldb, acl_res);
 901         if (!schema) {
 902                 talloc_free(acl_res);
 903                 return LDB_ERR_OPERATIONS_ERROR;
 904         }
 905
 906         guid = get_oc_guid_from_message(module, schema, acl_res->msgs[0]);
 907         if (!insert_in_object_tree(tmp_ctx, guid, SEC_ADS_WRITE_PROP,
 908                                    &root, &new_node)) {
 909                 return LDB_ERR_OPERATIONS_ERROR;
 910         };
 911
 912         guid = attribute_schemaid_guid_by_lDAPDisplayName(schema,
 913                                                           "name");
 914         if (!insert_in_object_tree(tmp_ctx, guid, SEC_ADS_WRITE_PROP,
 915                                    &new_node, &new_node)) {
 916                 return LDB_ERR_OPERATIONS_ERROR;
 917         };
 918
 919         rdn_name = ldb_dn_get_rdn_name(req->op.rename.olddn);
 920         if (rdn_name == NULL) {
 921                 return LDB_ERR_OPERATIONS_ERROR;
 922         }
 923         guid = attribute_schemaid_guid_by_lDAPDisplayName(schema,
 924                                                           rdn_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         ret = dsdb_get_sd_from_ldb_message(req, acl_res->msgs[0], &sd);
 931
 932         if (ret != LDB_SUCCESS) {
 933                 return LDB_ERR_OPERATIONS_ERROR;
 934         }
 935         /* Theoretically we pass the check if the object has no sd */
 936         if (!sd) {
 937                 return LDB_SUCCESS;
 938         }
 939         sid = samdb_result_dom_sid(req, acl_res->msgs[0], "objectSid");
 940         status = sec_access_check_ds(sd, acl_user_token(module),
 941                                      SEC_ADS_WRITE_PROP,
 942                                      &access_granted,
 943                                      root,
 944                                      sid);
 945
 946         if (!NT_STATUS_IS_OK(status)) {
 947                 DEBUG(10, ("Object %s nas no wp on name\n",
 948                            ldb_dn_get_linearized(req->op.rename.olddn)));
 949                 dsdb_acl_debug(sd,
 950                           acl_user_token(module),
 951                           req->op.rename.olddn,
 952                           true,
 953                           10);
 954                 return LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS;
 955         }
 956
 957         if (ldb_dn_compare(oldparent, newparent) == 0) {
 958                 /* regular rename, not move, nothing more to do */
 959                 return ldb_next_request(module, req);
 960         }
 961
 962         /* What exactly to do in this case? It would fail anyway.. */
 963         /* FIXME: this has to be made dynamic at some point */
 964         if ((ldb_dn_compare(req->op.rename.newdn, (ldb_get_schema_basedn(ldb))) == 0) ||
 965             (ldb_dn_compare(req->op.rename.newdn, (ldb_get_config_basedn(ldb))) == 0) ||
 966             (ldb_dn_compare(req->op.rename.newdn, (ldb_get_default_basedn(ldb))) == 0) ||
 967             (ldb_dn_compare(req->op.rename.newdn, (ldb_get_root_basedn(ldb))) == 0)) {
 968                 DEBUG(10,("acl:moving as an NC\n"));
 969                 return LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS;
 970         }
 971         /* new parent should have create child */
 972         talloc_free(tmp_ctx);
 973         tmp_ctx = talloc_new(req);
 974         root = NULL;
 975         new_node = NULL;
 976         guid = get_oc_guid_from_message(module, schema, acl_res->msgs[0]);
 977         if (!guid) {
 978                 DEBUG(10,("acl:renamed object has no object class\n"));
 979                 return ldb_module_done(req, NULL, NULL,  LDB_ERR_OPERATIONS_ERROR);
 980         }
 981
 982         ret = dsdb_module_check_access_on_dn(module, req, newparent, SEC_ADS_CREATE_CHILD, guid);
 983         if (ret != LDB_SUCCESS) {
 984                 DEBUG(10,("acl:access_denied renaming %s", ldb_dn_get_linearized(req->op.rename.olddn)));
 985                 return ret;
 986         }
 987         /* do we have delete object on the object? */
 988
 989         status = sec_access_check_ds(sd, acl_user_token(module),
 990                                      SEC_STD_DELETE,
 991                                      &access_granted,
 992                                      NULL,
 993                                      sid);
 994
 995         if (NT_STATUS_IS_OK(status)) {
 996                 return ldb_next_request(module, req);
 997         }
 998         /* what about delete child on the current parent */
 999         ret = dsdb_module_check_access_on_dn(module, req, oldparent, SEC_ADS_DELETE_CHILD, NULL);
1000         if (ret != LDB_SUCCESS) {
1001                 DEBUG(10,("acl:access_denied renaming %s", ldb_dn_get_linearized(req->op.rename.olddn)));
1002                 return ldb_module_done(req, NULL, NULL, ret);
1003         }
1004         return ldb_next_request(module, req);
1005 }
1006
1007 static int acl_search_callback(struct ldb_request *req, struct ldb_reply *ares)
1008 {
1009         struct ldb_context *ldb;
1010         struct acl_context *ac;
1011         struct acl_private *data;
1012         struct ldb_result *acl_res;
1013         static const char *acl_attrs[] = {
1014                 "objectClass",
1015                 "nTSecurityDescriptor",
1016                 "objectSid",
1017                 NULL
1018         };
1019         int ret, i;
1020
1021         ac = talloc_get_type(req->context, struct acl_context);
1022         data = talloc_get_type(ldb_module_get_private(ac->module), struct acl_private);
1023         ldb = ldb_module_get_ctx(ac->module);
1024
1025         if (!ares) {
1026                 return ldb_module_done(ac->req, NULL, NULL,
1027                                        LDB_ERR_OPERATIONS_ERROR);
1028         }
1029         if (ares->error != LDB_SUCCESS) {
1030                 return ldb_module_done(ac->req, ares->controls,
1031                                        ares->response, ares->error);
1032         }
1033
1034         switch (ares->type) {
1035         case LDB_REPLY_ENTRY:
1036                 if (ac->allowedAttributes
1037                     || ac->allowedChildClasses
1038                     || ac->allowedChildClassesEffective
1039                     || ac->allowedAttributesEffective
1040                     || ac->sDRightsEffective) {
1041                         ret = dsdb_module_search_dn(ac->module, ac, &acl_res, ares->message->dn,
1042                                                     acl_attrs, 0);
1043                         if (ret != LDB_SUCCESS) {
1044                                 return ldb_module_done(ac->req, NULL, NULL, ret);
1045                         }
1046                         if (ac->allowedAttributes || ac->allowedAttributesEffective) {
1047                                 ret = acl_allowedAttributes(ac->module, ac->schema, acl_res->msgs[0], ares->message, ac);
1048                                 if (ret != LDB_SUCCESS) {
1049                                         return ldb_module_done(ac->req, NULL, NULL, ret);
1050                                 }
1051                         }
1052                         if (ac->allowedChildClasses) {
1053                                 ret = acl_childClasses(ac->module, ac->schema, acl_res->msgs[0],
1054                                                        ares->message, "allowedChildClasses");
1055                                 if (ret != LDB_SUCCESS) {
1056                                         return ldb_module_done(ac->req, NULL, NULL, ret);
1057                                 }
1058                         }
1059                         if (ac->allowedChildClassesEffective) {
1060                                 ret = acl_childClassesEffective(ac->module, ac->schema,
1061                                                                 acl_res->msgs[0], ares->message, ac);
1062                                 if (ret != LDB_SUCCESS) {
1063                                         return ldb_module_done(ac->req, NULL, NULL, ret);
1064                                 }
1065                         }
1066                         if (ac->sDRightsEffective) {
1067                                 ret = acl_sDRightsEffective(ac->module,
1068                                                             acl_res->msgs[0], ares->message, ac);
1069                                 if (ret != LDB_SUCCESS) {
1070                                         return ldb_module_done(ac->req, NULL, NULL, ret);
1071                                 }
1072                         }
1073                 }
1074                 if (data && data->password_attrs) {
1075                         if (!ac->am_system) {
1076                                 for (i = 0; data->password_attrs[i]; i++) {
1077                                         ldb_msg_remove_attr(ares->message, data->password_attrs[i]);
1078                                 }
1079                         }
1080                 }
1081                 return ldb_module_send_entry(ac->req, ares->message, ares->controls);
1082
1083         case LDB_REPLY_REFERRAL:
1084                 return ldb_module_send_referral(ac->req, ares->referral);
1085
1086         case LDB_REPLY_DONE:
1087                 return ldb_module_done(ac->req, ares->controls,
1088                                        ares->response, LDB_SUCCESS);
1089
1090         }
1091         return LDB_SUCCESS;
1092 }
1093
1094 static int acl_search(struct ldb_module *module, struct ldb_request *req)
1095 {
1096         struct ldb_context *ldb;
1097         struct acl_context *ac;
1098         struct ldb_request *down_req;
1099         struct acl_private *data;
1100         int ret, i;
1101
1102         ldb = ldb_module_get_ctx(module);
1103
1104         ac = talloc_zero(req, struct acl_context);
1105         if (ac == NULL) {
1106                 ldb_oom(ldb);
1107                 return LDB_ERR_OPERATIONS_ERROR;
1108         }
1109         data = talloc_get_type(ldb_module_get_private(module), struct acl_private);
1110
1111         ac->module = module;
1112         ac->req = req;
1113         ac->am_system = dsdb_module_am_system(module);
1114         ac->allowedAttributes = ldb_attr_in_list(req->op.search.attrs, "allowedAttributes");
1115         ac->allowedAttributesEffective = ldb_attr_in_list(req->op.search.attrs, "allowedAttributesEffective");
1116         ac->allowedChildClasses = ldb_attr_in_list(req->op.search.attrs, "allowedChildClasses");
1117         ac->allowedChildClassesEffective = ldb_attr_in_list(req->op.search.attrs, "allowedChildClassesEffective");
1118         ac->sDRightsEffective = ldb_attr_in_list(req->op.search.attrs, "sDRightsEffective");
1119         ac->schema = dsdb_get_schema(ldb, ac);
1120
1121         /* replace any attributes in the parse tree that are private,
1122            so we don't allow a search for 'userPassword=penguin',
1123            just as we would not allow that attribute to be returned */
1124         if (ac->am_system) {
1125                 /* FIXME: We should copy the tree and keep the original unmodified. */
1126                 /* remove password attributes */
1127                 if (data && data->password_attrs) {
1128                         for (i = 0; data->password_attrs[i]; i++) {
1129                                 ldb_parse_tree_attr_replace(req->op.search.tree,
1130                                                             data->password_attrs[i],
1131                                                             "kludgeACLredactedattribute");
1132                         }
1133                 }
1134         }
1135         ret = ldb_build_search_req_ex(&down_req,
1136                                       ldb, ac,
1137                                       req->op.search.base,
1138                                       req->op.search.scope,
1139                                       req->op.search.tree,
1140                                       req->op.search.attrs,
1141                                       req->controls,
1142                                       ac, acl_search_callback,
1143                                       req);
1144         if (ret != LDB_SUCCESS) {
1145                 return ret;
1146         }
1147         /* perform the search */
1148         return ldb_next_request(module, down_req);
1149 }
1150
1151 _PUBLIC_ const struct ldb_module_ops ldb_acl_module_ops = {
1152         .name              = "acl",
1153         .search            = acl_search,
1154         .add               = acl_add,
1155         .modify            = acl_modify,
1156         .del               = acl_delete,
1157         .rename            = acl_rename,
1158         .init_context      = acl_module_init
1159 };