source4/dsdb/samdb/ldb_modules/samldb.c

   1 /*
   2    SAM ldb module
   3
   4    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
   5    Copyright (C) Simo Sorce  2004-2008
   6    Copyright (C) Matthias Dieter Wallnöfer 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 samldb module
  26  *
  27  *  Description: add embedded user/group creation functionality
  28  *
  29  *  Author: Simo Sorce
  30  */
  31
  32 #include "includes.h"
  33 #include "libcli/ldap/ldap_ndr.h"
  34 #include "ldb_module.h"
  35 #include "dsdb/samdb/samdb.h"
  36 #include "dsdb/samdb/ldb_modules/util.h"
  37 #include "libcli/security/security.h"
  38 #include "librpc/gen_ndr/ndr_security.h"
  39 #include "../lib/util/util_ldb.h"
  40 #include "ldb_wrap.h"
  41 #include "param/param.h"
  42
  43 struct samldb_ctx;
  44
  45 typedef int (*samldb_step_fn_t)(struct samldb_ctx *);
  46
  47 struct samldb_step {
  48         struct samldb_step *next;
  49         samldb_step_fn_t fn;
  50 };
  51
  52 struct samldb_ctx {
  53         struct ldb_module *module;
  54         struct ldb_request *req;
  55
  56         /* used for add operations */
  57         const char *type;
  58
  59         /* the resulting message */
  60         struct ldb_message *msg;
  61
  62         /* holds the entry SID */
  63         struct dom_sid *sid;
  64
  65         /* holds a generic dn */
  66         struct ldb_dn *dn;
  67
  68         /* used in conjunction with "sid" in "samldb_dn_from_sid" */
  69         struct ldb_dn *res_dn;
  70
  71         /* used in conjunction with "dn" in "samldb_sid_from_dn" */
  72         struct dom_sid *res_sid;
  73
  74         /* used in "samldb_user_dn_to_prim_group_rid" */
  75         uint32_t prim_group_rid;
  76
  77         /* used in conjunction with "prim_group_rid" in
  78          * "samldb_prim_group_rid_to_users_cnt" */
  79         unsigned int users_cnt;
  80
  81         /* used in "samldb_group_add_member" and "samldb_group_del_member" */
  82         struct ldb_dn *group_dn;
  83         struct ldb_dn *member_dn;
  84
  85         /* used in "samldb_primary_group_change" */
  86         struct ldb_dn *user_dn;
  87         struct ldb_dn *old_prim_group_dn, *new_prim_group_dn;
  88
  89         /* generic counter - used in "samldb_member_check" */
  90         unsigned int cnt;
  91
  92         /* all the async steps necessary to complete the operation */
  93         struct samldb_step *steps;
  94         struct samldb_step *curstep;
  95
  96         /* If someone set an ares to forward controls and response back to the caller */
  97         struct ldb_reply *ares;
  98 };
  99
 100 static struct samldb_ctx *samldb_ctx_init(struct ldb_module *module,
 101                                           struct ldb_request *req)
 102 {
 103         struct ldb_context *ldb;
 104         struct samldb_ctx *ac;
 105
 106         ldb = ldb_module_get_ctx(module);
 107
 108         ac = talloc_zero(req, struct samldb_ctx);
 109         if (ac == NULL) {
 110                 ldb_oom(ldb);
 111                 return NULL;
 112         }
 113
 114         ac->module = module;
 115         ac->req = req;
 116
 117         return ac;
 118 }
 119
 120 static int samldb_add_step(struct samldb_ctx *ac, samldb_step_fn_t fn)
 121 {
 122         struct samldb_step *step, *stepper;
 123
 124         step = talloc_zero(ac, struct samldb_step);
 125         if (step == NULL) {
 126                 return LDB_ERR_OPERATIONS_ERROR;
 127         }
 128
 129         step->fn = fn;
 130
 131         if (ac->steps == NULL) {
 132                 ac->steps = step;
 133                 ac->curstep = step;
 134         } else {
 135                 if (ac->curstep == NULL)
 136                         return LDB_ERR_OPERATIONS_ERROR;
 137                 for (stepper = ac->curstep; stepper->next != NULL;
 138                         stepper = stepper->next);
 139                 stepper->next = step;
 140         }
 141
 142         return LDB_SUCCESS;
 143 }
 144
 145 static int samldb_first_step(struct samldb_ctx *ac)
 146 {
 147         if (ac->steps == NULL) {
 148                 return LDB_ERR_OPERATIONS_ERROR;
 149         }
 150
 151         ac->curstep = ac->steps;
 152         return ac->curstep->fn(ac);
 153 }
 154
 155 static int samldb_next_step(struct samldb_ctx *ac)
 156 {
 157         if (ac->curstep->next) {
 158                 ac->curstep = ac->curstep->next;
 159                 return ac->curstep->fn(ac);
 160         }
 161
 162         /* we exit the samldb module here */
 163         /* If someone set an ares to forward controls and response back to the caller, use them */
 164         if (ac->ares) {
 165                 return ldb_module_done(ac->req, ac->ares->controls,
 166                                        ac->ares->response, LDB_SUCCESS);
 167         } else {
 168                 return ldb_module_done(ac->req, NULL, NULL, LDB_SUCCESS);
 169         }
 170 }
 171
 172 static int samldb_generate_samAccountName(struct ldb_message *msg)
 173 {
 174         char *name;
 175
 176         /* Format: $000000-000000000000 */
 177
 178         name = talloc_asprintf(msg, "$%.6X-%.6X%.6X",
 179                                 (unsigned int)generate_random(),
 180                                 (unsigned int)generate_random(),
 181                                 (unsigned int)generate_random());
 182         if (name == NULL) {
 183                 return LDB_ERR_OPERATIONS_ERROR;
 184         }
 185         return ldb_msg_add_steal_string(msg, "samAccountName", name);
 186 }
 187
 188 /*
 189  * samldb_check_samAccountName (async)
 190  */
 191
 192 static int samldb_check_samAccountName_callback(struct ldb_request *req,
 193                                                 struct ldb_reply *ares)
 194 {
 195         struct samldb_ctx *ac;
 196         int ret;
 197
 198         ac = talloc_get_type(req->context, struct samldb_ctx);
 199
 200         if (ares->error != LDB_SUCCESS) {
 201                 return ldb_module_done(ac->req, ares->controls,
 202                                        ares->response, ares->error);
 203         }
 204
 205         switch (ares->type) {
 206         case LDB_REPLY_ENTRY:
 207                 /* if we get an entry it means this samAccountName
 208                  * already exists */
 209                 return ldb_module_done(ac->req, NULL, NULL,
 210                                        LDB_ERR_ENTRY_ALREADY_EXISTS);
 211
 212         case LDB_REPLY_REFERRAL:
 213                 /* ignore */
 214                 talloc_free(ares);
 215                 ret = LDB_SUCCESS;
 216                 break;
 217
 218         case LDB_REPLY_DONE:
 219                 /* not found, go on */
 220                 talloc_free(ares);
 221                 ret = samldb_next_step(ac);
 222                 break;
 223         }
 224
 225         if (ret != LDB_SUCCESS) {
 226                 return ldb_module_done(ac->req, NULL, NULL, ret);
 227         }
 228
 229         return LDB_SUCCESS;
 230 }
 231
 232 static int samldb_check_samAccountName(struct samldb_ctx *ac)
 233 {
 234         struct ldb_context *ldb;
 235         struct ldb_request *req;
 236         const char *name;
 237         char *filter;
 238         int ret;
 239
 240         ldb = ldb_module_get_ctx(ac->module);
 241
 242         if (ldb_msg_find_element(ac->msg, "samAccountName") == NULL) {
 243                 ret = samldb_generate_samAccountName(ac->msg);
 244                 if (ret != LDB_SUCCESS) {
 245                         return ret;
 246                 }
 247         }
 248
 249         name = ldb_msg_find_attr_as_string(ac->msg, "samAccountName", NULL);
 250         if (name == NULL) {
 251                 return LDB_ERR_OPERATIONS_ERROR;
 252         }
 253         filter = talloc_asprintf(ac, "samAccountName=%s",
 254                                  ldb_binary_encode_string(ac, name));
 255         if (filter == NULL) {
 256                 return LDB_ERR_OPERATIONS_ERROR;
 257         }
 258
 259         ret = ldb_build_search_req(&req, ldb, ac,
 260                                    samdb_base_dn(ldb), LDB_SCOPE_SUBTREE,
 261                                    filter, NULL,
 262                                    NULL,
 263                                    ac, samldb_check_samAccountName_callback,
 264                                    ac->req);
 265         talloc_free(filter);
 266         if (ret != LDB_SUCCESS) {
 267                 return ret;
 268         }
 269         return ldb_next_request(ac->module, req);
 270 }
 271
 272
 273 static int samldb_check_samAccountType(struct samldb_ctx *ac)
 274 {
 275         struct ldb_context *ldb;
 276         unsigned int account_type;
 277         unsigned int group_type;
 278         unsigned int uac;
 279         int ret;
 280
 281         ldb = ldb_module_get_ctx(ac->module);
 282
 283         /* make sure sAMAccountType is not specified */
 284         if (ldb_msg_find_element(ac->msg, "sAMAccountType") != NULL) {
 285                 ldb_asprintf_errstring(ldb,
 286                         "sAMAccountType must not be specified!");
 287                 return LDB_ERR_UNWILLING_TO_PERFORM;
 288         }
 289
 290         if (strcmp("user", ac->type) == 0) {
 291                 uac = samdb_result_uint(ac->msg, "userAccountControl", 0);
 292                 if (uac == 0) {
 293                         ldb_asprintf_errstring(ldb,
 294                                 "userAccountControl invalid!");
 295                         return LDB_ERR_UNWILLING_TO_PERFORM;
 296                 } else {
 297                         account_type = ds_uf2atype(uac);
 298                         ret = samdb_msg_add_uint(ldb,
 299                                                  ac->msg, ac->msg,
 300                                                  "sAMAccountType",
 301                                                  account_type);
 302                         if (ret != LDB_SUCCESS) {
 303                                 return ret;
 304                         }
 305                 }
 306         } else
 307         if (strcmp("group", ac->type) == 0) {
 308
 309                 group_type = samdb_result_uint(ac->msg, "groupType", 0);
 310                 if (group_type == 0) {
 311                         ldb_asprintf_errstring(ldb,
 312                                 "groupType invalid!\n");
 313                         return LDB_ERR_UNWILLING_TO_PERFORM;
 314                 } else {
 315                         account_type = ds_gtype2atype(group_type);
 316                         ret = samdb_msg_add_uint(ldb,
 317                                                  ac->msg, ac->msg,
 318                                                  "sAMAccountType",
 319                                                  account_type);
 320                         if (ret != LDB_SUCCESS) {
 321                                 return ret;
 322                         }
 323                 }
 324         }
 325
 326         return samldb_next_step(ac);
 327 }
 328
 329 static bool samldb_msg_add_sid(struct ldb_message *msg,
 330                                 const char *name,
 331                                 const struct dom_sid *sid)
 332 {
 333         struct ldb_val v;
 334         enum ndr_err_code ndr_err;
 335
 336         ndr_err = ndr_push_struct_blob(&v, msg, NULL, sid,
 337                                        (ndr_push_flags_fn_t)ndr_push_dom_sid);
 338         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 339                 return false;
 340         }
 341         return (ldb_msg_add_value(msg, name, &v, NULL) == 0);
 342 }
 343
 344
 345 /* allocate a SID using our RID Set */
 346 static int samldb_allocate_sid(struct samldb_ctx *ac)
 347 {
 348         uint32_t rid;
 349         int ret;
 350         struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
 351
 352         ret = ridalloc_allocate_rid(ac->module, &rid);
 353         if (ret != LDB_SUCCESS) {
 354                 return ret;
 355         }
 356
 357         ac->sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
 358         if (ac->sid == NULL) {
 359                 ldb_module_oom(ac->module);
 360                 return LDB_ERR_OPERATIONS_ERROR;
 361         }
 362
 363         if ( ! samldb_msg_add_sid(ac->msg, "objectSid", ac->sid)) {
 364                 return LDB_ERR_OPERATIONS_ERROR;
 365         }
 366
 367         return samldb_next_step(ac);
 368 }
 369
 370 /*
 371  * samldb_dn_from_sid (async)
 372  */
 373
 374 static int samldb_dn_from_sid(struct samldb_ctx *ac);
 375
 376 static int samldb_dn_from_sid_callback(struct ldb_request *req,
 377         struct ldb_reply *ares)
 378 {
 379         struct ldb_context *ldb;
 380         struct samldb_ctx *ac;
 381         int ret;
 382
 383         ac = talloc_get_type(req->context, struct samldb_ctx);
 384         ldb = ldb_module_get_ctx(ac->module);
 385
 386         if (!ares) {
 387                 ret = LDB_ERR_OPERATIONS_ERROR;
 388                 goto done;
 389         }
 390         if (ares->error != LDB_SUCCESS) {
 391                 return ldb_module_done(ac->req, ares->controls,
 392                                         ares->response, ares->error);
 393         }
 394
 395         switch (ares->type) {
 396         case LDB_REPLY_ENTRY:
 397                 /* save entry */
 398                 if (ac->res_dn != NULL) {
 399                         /* one too many! */
 400                         ldb_set_errstring(ldb,
 401                                 "Invalid number of results while searching "
 402                                 "for domain objects!");
 403                         ret = LDB_ERR_OPERATIONS_ERROR;
 404                         break;
 405                 }
 406                 ac->res_dn = ldb_dn_copy(ac, ares->message->dn);
 407
 408                 talloc_free(ares);
 409                 ret = LDB_SUCCESS;
 410                 break;
 411
 412         case LDB_REPLY_REFERRAL:
 413                 /* ignore */
 414                 talloc_free(ares);
 415                 ret = LDB_SUCCESS;
 416                 break;
 417
 418         case LDB_REPLY_DONE:
 419                 talloc_free(ares);
 420
 421                 /* found or not found, go on */
 422                 ret = samldb_next_step(ac);
 423                 break;
 424         }
 425
 426 done:
 427         if (ret != LDB_SUCCESS) {
 428                 return ldb_module_done(ac->req, NULL, NULL, ret);
 429         }
 430
 431         return LDB_SUCCESS;
 432 }
 433
 434 /* Finds the DN "res_dn" of an object with a given SID "sid" */
 435 static int samldb_dn_from_sid(struct samldb_ctx *ac)
 436 {
 437         struct ldb_context *ldb;
 438         static const char * const attrs[] = { NULL };
 439         struct ldb_request *req;
 440         char *filter;
 441         int ret;
 442
 443         ldb = ldb_module_get_ctx(ac->module);
 444
 445         if (ac->sid == NULL)
 446                 return LDB_ERR_OPERATIONS_ERROR;
 447
 448         filter = talloc_asprintf(ac, "(objectSid=%s)",
 449                 ldap_encode_ndr_dom_sid(ac, ac->sid));
 450         if (filter == NULL)
 451                 return LDB_ERR_OPERATIONS_ERROR;
 452
 453         ret = ldb_build_search_req(&req, ldb, ac,
 454                                 ldb_get_default_basedn(ldb),
 455                                 LDB_SCOPE_SUBTREE,
 456                                 filter, attrs,
 457                                 NULL,
 458                                 ac, samldb_dn_from_sid_callback,
 459                                 ac->req);
 460         if (ret != LDB_SUCCESS)
 461                 return ret;
 462
 463         return ldb_next_request(ac->module, req);
 464 }
 465
 466
 467 static int samldb_check_primaryGroupID_1(struct samldb_ctx *ac)
 468 {
 469         struct ldb_context *ldb;
 470         uint32_t rid;
 471
 472         ldb = ldb_module_get_ctx(ac->module);
 473
 474         rid = samdb_result_uint(ac->msg, "primaryGroupID", ~0);
 475         ac->sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
 476         if (ac->sid == NULL)
 477                 return LDB_ERR_OPERATIONS_ERROR;
 478         ac->res_dn = NULL;
 479
 480         return samldb_next_step(ac);
 481 }
 482
 483 static int samldb_check_primaryGroupID_2(struct samldb_ctx *ac)
 484 {
 485         if (ac->res_dn == NULL) {
 486                 struct ldb_context *ldb;
 487                 ldb = ldb_module_get_ctx(ac->module);
 488                 ldb_asprintf_errstring(ldb,
 489                                        "Failed to find group sid %s!",
 490                                        dom_sid_string(ac->sid, ac->sid));
 491                 return LDB_ERR_UNWILLING_TO_PERFORM;
 492         }
 493
 494         return samldb_next_step(ac);
 495 }
 496
 497
 498 /*
 499  * samldb_set_defaultObjectCategory_callback (async)
 500  */
 501
 502 static int samldb_set_defaultObjectCategory_callback(struct ldb_request *req,
 503                                                      struct ldb_reply *ares)
 504 {
 505         struct ldb_context *ldb;
 506         struct samldb_ctx *ac;
 507         int ret;
 508
 509         ac = talloc_get_type(req->context, struct samldb_ctx);
 510         ldb = ldb_module_get_ctx(ac->module);
 511
 512         if (!ares) {
 513                 ret = LDB_ERR_OPERATIONS_ERROR;
 514                 goto done;
 515         }
 516         if (ares->error != LDB_SUCCESS) {
 517                 return ldb_module_done(ac->req, ares->controls,
 518                                         ares->response, ares->error);
 519         }
 520         if (ares->type != LDB_REPLY_DONE) {
 521                 ldb_set_errstring(ldb,
 522                         "Invalid reply type!");
 523                 ret = LDB_ERR_OPERATIONS_ERROR;
 524                 goto done;
 525         }
 526
 527         ret = samldb_next_step(ac);
 528
 529 done:
 530         if (ret != LDB_SUCCESS) {
 531                 return ldb_module_done(ac->req, NULL, NULL, ret);
 532         }
 533
 534         return LDB_SUCCESS;
 535 }
 536
 537 static int samldb_set_defaultObjectCategory(struct samldb_ctx *ac)
 538 {
 539         struct ldb_context *ldb;
 540         struct ldb_message *msg;
 541         struct ldb_request *req;
 542         int ret;
 543
 544         ldb = ldb_module_get_ctx(ac->module);
 545
 546         /* (Re)set the default object category to have it set to the DN in the
 547          * storage format */
 548         msg = ldb_msg_new(ac);
 549         msg->dn = ac->msg->dn;
 550         ldb_msg_add_empty(msg, "defaultObjectCategory",
 551                           LDB_FLAG_MOD_REPLACE, NULL);
 552         ldb_msg_add_steal_string(msg, "defaultObjectCategory",
 553                                  ldb_dn_alloc_linearized(msg, ac->dn));
 554
 555         ret = ldb_build_mod_req(&req, ldb, ac,
 556                                 msg, NULL,
 557                                 ac,
 558                                 samldb_set_defaultObjectCategory_callback,
 559                                 ac->req);
 560         if (ret != LDB_SUCCESS) {
 561                 talloc_free(msg);
 562                 return ret;
 563         }
 564
 565         return ldb_next_request(ac->module, req);
 566 }
 567
 568 /*
 569  * samldb_find_for_defaultObjectCategory (async)
 570  */
 571
 572 static int samldb_find_for_defaultObjectCategory_callback(struct ldb_request *req,
 573                                                           struct ldb_reply *ares)
 574 {
 575         struct ldb_context *ldb;
 576         struct samldb_ctx *ac;
 577         int ret;
 578
 579         ac = talloc_get_type(req->context, struct samldb_ctx);
 580         ldb = ldb_module_get_ctx(ac->module);
 581
 582         if (!ares) {
 583                 ret = LDB_ERR_OPERATIONS_ERROR;
 584                 goto done;
 585         }
 586         if (ares->error != LDB_SUCCESS) {
 587                 if (ares->error == LDB_ERR_NO_SUCH_OBJECT) {
 588                         if (ldb_request_get_control(ac->req,
 589                                                     LDB_CONTROL_RELAX_OID) != NULL) {
 590                                 /* Don't be pricky when the DN doesn't exist */
 591                                 /* if we have the RELAX control specified */
 592                                 ac->dn = req->op.search.base;
 593                                 return samldb_next_step(ac);
 594                         } else {
 595                                 ldb_set_errstring(ldb,
 596                                         "samldb_find_defaultObjectCategory: "
 597                                         "Invalid DN for 'defaultObjectCategory'!");
 598                                 ares->error = LDB_ERR_CONSTRAINT_VIOLATION;
 599                         }
 600                 }
 601
 602                 return ldb_module_done(ac->req, ares->controls,
 603                                        ares->response, ares->error);
 604         }
 605
 606         switch (ares->type) {
 607         case LDB_REPLY_ENTRY:
 608                 ac->dn = talloc_steal(ac, ares->message->dn);
 609
 610                 ret = LDB_SUCCESS;
 611                 break;
 612
 613         case LDB_REPLY_REFERRAL:
 614                 /* ignore */
 615                 talloc_free(ares);
 616                 ret = LDB_SUCCESS;
 617                 break;
 618
 619         case LDB_REPLY_DONE:
 620                 talloc_free(ares);
 621
 622                 if (ac->dn != NULL) {
 623                         /* when found go on */
 624                         ret = samldb_next_step(ac);
 625                 } else {
 626                         ret = LDB_ERR_OPERATIONS_ERROR;
 627                 }
 628                 break;
 629         }
 630
 631 done:
 632         if (ret != LDB_SUCCESS) {
 633                 return ldb_module_done(ac->req, NULL, NULL, ret);
 634         }
 635
 636         return LDB_SUCCESS;
 637 }
 638
 639 static int samldb_find_for_defaultObjectCategory(struct samldb_ctx *ac)
 640 {
 641         struct ldb_context *ldb;
 642         struct ldb_request *req;
 643         static const char *no_attrs[] = { NULL };
 644         int ret;
 645         const struct ldb_val *val;
 646         struct ldb_dn *def_obj_cat_dn;
 647
 648         ldb = ldb_module_get_ctx(ac->module);
 649
 650         ac->dn = NULL;
 651
 652         val = ldb_msg_find_ldb_val(ac->msg, "defaultObjectCategory");
 653         if (val != NULL) {
 654                 /* "defaultObjectCategory" has been set by the caller. Do some
 655                  * checks for consistency.
 656                  * NOTE: The real constraint check (that 'defaultObjectCategory'
 657                  * is the DN of the new objectclass or any parent of it) is
 658                  * still incomplete.
 659                  * For now we say that 'defaultObjectCategory' is valid if it
 660                  * exists and it is of objectclass "classSchema". */
 661                 def_obj_cat_dn = ldb_dn_from_ldb_val(ac, ldb, val);
 662                 if (def_obj_cat_dn == NULL) {
 663                         ldb_set_errstring(ldb,
 664                                 "samldb_find_defaultObjectCategory: Invalid DN "
 665                                 "for 'defaultObjectCategory'!");
 666                         return LDB_ERR_CONSTRAINT_VIOLATION;
 667                 }
 668         } else {
 669                 /* "defaultObjectCategory" has not been set by the caller. Use
 670                  * the entry DN for it. */
 671                 def_obj_cat_dn = ac->msg->dn;
 672         }
 673
 674         ret = ldb_build_search_req(&req, ldb, ac,
 675                                    def_obj_cat_dn, LDB_SCOPE_BASE,
 676                                    "objectClass=classSchema", no_attrs,
 677                                    NULL,
 678                                    ac, samldb_find_for_defaultObjectCategory_callback,
 679                                    ac->req);
 680         if (ret != LDB_SUCCESS) {
 681                 return ret;
 682         }
 683
 684         ret = dsdb_request_add_controls(req,
 685                                         DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT);
 686         if (ret != LDB_SUCCESS) {
 687                 return ret;
 688         }
 689
 690         return ldb_next_request(ac->module, req);
 691 }
 692
 693 /**
 694  * msDS-IntId attributeSchema attribute handling
 695  * during LDB_ADD request processing
 696  */
 697 static int samldb_add_handle_msDS_IntId(struct samldb_ctx *ac)
 698 {
 699         int ret;
 700         bool id_exists;
 701         uint32_t msds_intid;
 702         uint32_t system_flags;
 703         struct ldb_context *ldb;
 704         struct ldb_result *ldb_res;
 705         struct ldb_dn *schema_dn;
 706
 707         ldb = ldb_module_get_ctx(ac->module);
 708         schema_dn = ldb_get_schema_basedn(ldb);
 709
 710         /* replicated update should always go through */
 711         if (ldb_request_get_control(ac->req, DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
 712                 return LDB_SUCCESS;
 713         }
 714
 715         /* msDS-IntId is handled by system and should never be
 716          * passed by clients */
 717         if (ldb_msg_find_element(ac->msg, "msDS-IntId")) {
 718                 return LDB_ERR_UNWILLING_TO_PERFORM;
 719         }
 720
 721         /* do not generate msDS-IntId if Relax control is passed */
 722         if (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
 723                 return LDB_SUCCESS;
 724         }
 725
 726         /* check Functional Level */
 727         if (dsdb_functional_level(ldb) < DS_DOMAIN_FUNCTION_2003) {
 728                 return LDB_SUCCESS;
 729         }
 730
 731         /* check systemFlags for SCHEMA_BASE_OBJECT flag */
 732         system_flags = ldb_msg_find_attr_as_uint(ac->msg, "systemFlags", 0);
 733         if (system_flags & SYSTEM_FLAG_SCHEMA_BASE_OBJECT) {
 734                 return LDB_SUCCESS;
 735         }
 736
 737         /* Generate new value for msDs-IntId
 738          * Value should be in 0x80000000..0xBFFFFFFF range */
 739         msds_intid = generate_random() % 0X3FFFFFFF;
 740         msds_intid += 0x80000000;
 741
 742         /* probe id values until unique one is found */
 743         do {
 744                 msds_intid++;
 745                 if (msds_intid > 0xBFFFFFFF) {
 746                         msds_intid = 0x80000001;
 747                 }
 748
 749                 ret = dsdb_module_search(ac->module, ac,
 750                                          &ldb_res,
 751                                          schema_dn, LDB_SCOPE_ONELEVEL, NULL, 0,
 752                                          "(msDS-IntId=%d)", msds_intid);
 753                 if (ret != LDB_SUCCESS) {
 754                         ldb_debug_set(ldb, LDB_DEBUG_ERROR,
 755                                       __location__": Searching for msDS-IntId=%d failed - %s\n",
 756                                       msds_intid,
 757                                       ldb_errstring(ldb));
 758                         return LDB_ERR_OPERATIONS_ERROR;
 759                 }
 760                 id_exists = (ldb_res->count > 0);
 761
 762                 talloc_free(ldb_res);
 763         } while(id_exists);
 764
 765         return ldb_msg_add_fmt(ac->msg, "msDS-IntId", "%d", msds_intid);
 766 }
 767
 768
 769 /*
 770  * samldb_add_entry (async)
 771  */
 772
 773 static int samldb_add_entry_callback(struct ldb_request *req,
 774                                         struct ldb_reply *ares)
 775 {
 776         struct ldb_context *ldb;
 777         struct samldb_ctx *ac;
 778         int ret;
 779
 780         ac = talloc_get_type(req->context, struct samldb_ctx);
 781         ldb = ldb_module_get_ctx(ac->module);
 782
 783         if (!ares) {
 784                 return ldb_module_done(ac->req, NULL, NULL,
 785                                         LDB_ERR_OPERATIONS_ERROR);
 786         }
 787         if (ares->error != LDB_SUCCESS) {
 788                 return ldb_module_done(ac->req, ares->controls,
 789                                         ares->response, ares->error);
 790         }
 791         if (ares->type != LDB_REPLY_DONE) {
 792                 ldb_set_errstring(ldb,
 793                         "Invalid reply type!\n");
 794                 return ldb_module_done(ac->req, NULL, NULL,
 795                                         LDB_ERR_OPERATIONS_ERROR);
 796         }
 797
 798         /* The caller may wish to get controls back from the add */
 799         ac->ares = talloc_steal(ac, ares);
 800
 801         ret = samldb_next_step(ac);
 802         if (ret != LDB_SUCCESS) {
 803                 return ldb_module_done(ac->req, NULL, NULL, ret);
 804         }
 805         return ret;
 806 }
 807
 808 static int samldb_add_entry(struct samldb_ctx *ac)
 809 {
 810         struct ldb_context *ldb;
 811         struct ldb_request *req;
 812         int ret;
 813
 814         ldb = ldb_module_get_ctx(ac->module);
 815
 816         ret = ldb_build_add_req(&req, ldb, ac,
 817                                 ac->msg,
 818                                 ac->req->controls,
 819                                 ac, samldb_add_entry_callback,
 820                                 ac->req);
 821         if (ret != LDB_SUCCESS) {
 822                 return ret;
 823         }
 824
 825         return ldb_next_request(ac->module, req);
 826 }
 827
 828
 829 static int samldb_fill_object(struct samldb_ctx *ac, const char *type)
 830 {
 831         struct ldb_context *ldb;
 832         struct loadparm_context *lp_ctx;
 833         enum sid_generator sid_generator;
 834         int ret;
 835
 836         ldb = ldb_module_get_ctx(ac->module);
 837
 838         /* Add informations for the different account types */
 839         ac->type = type;
 840         if (strcmp(ac->type, "user") == 0) {
 841                 ret = samdb_find_or_add_attribute(ldb, ac->msg,
 842                         "userAccountControl", "546");
 843                 if (ret != LDB_SUCCESS) return ret;
 844                 ret = samdb_find_or_add_attribute(ldb, ac->msg,
 845                         "badPwdCount", "0");
 846                 if (ret != LDB_SUCCESS) return ret;
 847                 ret = samdb_find_or_add_attribute(ldb, ac->msg,
 848                         "codePage", "0");
 849                 if (ret != LDB_SUCCESS) return ret;
 850                 ret = samdb_find_or_add_attribute(ldb, ac->msg,
 851                         "countryCode", "0");
 852                 if (ret != LDB_SUCCESS) return ret;
 853                 ret = samdb_find_or_add_attribute(ldb, ac->msg,
 854                         "badPasswordTime", "0");
 855                 if (ret != LDB_SUCCESS) return ret;
 856                 ret = samdb_find_or_add_attribute(ldb, ac->msg,
 857                         "lastLogoff", "0");
 858                 if (ret != LDB_SUCCESS) return ret;
 859                 ret = samdb_find_or_add_attribute(ldb, ac->msg,
 860                         "lastLogon", "0");
 861                 if (ret != LDB_SUCCESS) return ret;
 862                 ret = samdb_find_or_add_attribute(ldb, ac->msg,
 863                         "pwdLastSet", "0");
 864                 if (ret != LDB_SUCCESS) return ret;
 865                 if (!ldb_msg_find_element(ac->msg, "primaryGroupID")) {
 866                         ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
 867                                                  "primaryGroupID", DOMAIN_RID_USERS);
 868                         if (ret != LDB_SUCCESS) return ret;
 869                 }
 870                 ret = samdb_find_or_add_attribute(ldb, ac->msg,
 871                         "accountExpires", "9223372036854775807");
 872                 if (ret != LDB_SUCCESS) return ret;
 873                 ret = samdb_find_or_add_attribute(ldb, ac->msg,
 874                         "logonCount", "0");
 875                 if (ret != LDB_SUCCESS) return ret;
 876         } else if (strcmp(ac->type, "group") == 0) {
 877                 ret = samdb_find_or_add_attribute(ldb, ac->msg,
 878                         "groupType", "-2147483646");
 879                 if (ret != LDB_SUCCESS) return ret;
 880         } else if (strcmp(ac->type, "classSchema") == 0) {
 881                 const struct ldb_val *rdn_value;
 882
 883                 ret = samdb_find_or_add_attribute(ldb, ac->msg,
 884                                                   "rdnAttId", "cn");
 885                 if (ret != LDB_SUCCESS) return ret;
 886
 887                 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
 888                 if (!ldb_msg_find_element(ac->msg, "lDAPDisplayName")) {
 889                         /* the RDN has prefix "CN" */
 890                         ret = ldb_msg_add_string(ac->msg, "lDAPDisplayName",
 891                                 samdb_cn_to_lDAPDisplayName(ac,
 892                                         (const char *) rdn_value->data));
 893                         if (ret != LDB_SUCCESS) {
 894                                 ldb_oom(ldb);
 895                                 return ret;
 896                         }
 897                 }
 898
 899                 if (!ldb_msg_find_element(ac->msg, "schemaIDGUID")) {
 900                         struct GUID guid;
 901                         /* a new GUID */
 902                         guid = GUID_random();
 903                         ret = dsdb_msg_add_guid(ac->msg, &guid, "schemaIDGUID");
 904                         if (ret != LDB_SUCCESS) {
 905                                 ldb_oom(ldb);
 906                                 return ret;
 907                         }
 908                 }
 909
 910                 ret = samldb_add_step(ac, samldb_add_entry);
 911                 if (ret != LDB_SUCCESS) return ret;
 912
 913                 ret = samldb_add_step(ac, samldb_find_for_defaultObjectCategory);
 914                 if (ret != LDB_SUCCESS) return ret;
 915
 916                 ret = samldb_add_step(ac, samldb_set_defaultObjectCategory);
 917                 if (ret != LDB_SUCCESS) return ret;
 918
 919                 return samldb_first_step(ac);
 920         } else if (strcmp(ac->type, "attributeSchema") == 0) {
 921                 const struct ldb_val *rdn_value;
 922                 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
 923                 if (!ldb_msg_find_element(ac->msg, "lDAPDisplayName")) {
 924                         /* the RDN has prefix "CN" */
 925                         ret = ldb_msg_add_string(ac->msg, "lDAPDisplayName",
 926                                 samdb_cn_to_lDAPDisplayName(ac,
 927                                         (const char *) rdn_value->data));
 928                         if (ret != LDB_SUCCESS) {
 929                                 ldb_oom(ldb);
 930                                 return ret;
 931                         }
 932                 }
 933
 934                 ret = samdb_find_or_add_attribute(ldb, ac->msg,
 935                                                   "isSingleValued", "FALSE");
 936                 if (ret != LDB_SUCCESS) return ret;
 937
 938                 if (!ldb_msg_find_element(ac->msg, "schemaIDGUID")) {
 939                         struct GUID guid;
 940                         /* a new GUID */
 941                         guid = GUID_random();
 942                         ret = dsdb_msg_add_guid(ac->msg, &guid, "schemaIDGUID");
 943                         if (ret != LDB_SUCCESS) {
 944                                 ldb_oom(ldb);
 945                                 return ret;
 946                         }
 947                 }
 948
 949                 /* handle msDS-IntID attribute */
 950                 ret = samldb_add_handle_msDS_IntId(ac);
 951                 if (ret != LDB_SUCCESS) return ret;
 952
 953                 ret = samldb_add_step(ac, samldb_add_entry);
 954                 if (ret != LDB_SUCCESS) return ret;
 955
 956                 return samldb_first_step(ac);
 957         } else {
 958                 ldb_asprintf_errstring(ldb,
 959                         "Invalid entry type!");
 960                 return LDB_ERR_OPERATIONS_ERROR;
 961         }
 962
 963         /* check if we have a valid samAccountName */
 964         ret = samldb_add_step(ac, samldb_check_samAccountName);
 965         if (ret != LDB_SUCCESS) return ret;
 966
 967         /* check account_type/group_type */
 968         ret = samldb_add_step(ac, samldb_check_samAccountType);
 969         if (ret != LDB_SUCCESS) return ret;
 970
 971         /* check if we have a valid primary group ID */
 972         if (strcmp(ac->type, "user") == 0) {
 973                 ret = samldb_add_step(ac, samldb_check_primaryGroupID_1);
 974                 if (ret != LDB_SUCCESS) return ret;
 975                 ret = samldb_add_step(ac, samldb_dn_from_sid);
 976                 if (ret != LDB_SUCCESS) return ret;
 977                 ret = samldb_add_step(ac, samldb_check_primaryGroupID_2);
 978                 if (ret != LDB_SUCCESS) return ret;
 979         }
 980
 981         lp_ctx = talloc_get_type(ldb_get_opaque(ldb, "loadparm"),
 982                  struct loadparm_context);
 983
 984         /* don't allow objectSID to be specified without the RELAX control */
 985         ac->sid = samdb_result_dom_sid(ac, ac->msg, "objectSid");
 986         if (ac->sid && !ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID) &&
 987             !dsdb_module_am_system(ac->module)) {
 988                 ldb_asprintf_errstring(ldb, "No SID may be specified in user/group creation for %s",
 989                                        ldb_dn_get_linearized(ac->msg->dn));
 990                 return LDB_ERR_UNWILLING_TO_PERFORM;
 991         }
 992
 993         if ( ! ac->sid) {
 994                 sid_generator = lp_sid_generator(lp_ctx);
 995                 if (sid_generator == SID_GENERATOR_INTERNAL) {
 996                         ret = samldb_add_step(ac, samldb_allocate_sid);
 997                         if (ret != LDB_SUCCESS) return ret;
 998                 }
 999         }
1000
1001         /* finally proceed with adding the entry */
1002         ret = samldb_add_step(ac, samldb_add_entry);
1003         if (ret != LDB_SUCCESS) return ret;
1004
1005         return samldb_first_step(ac);
1006 }
1007
1008 static int samldb_fill_foreignSecurityPrincipal_object(struct samldb_ctx *ac)
1009 {
1010         struct ldb_context *ldb;
1011         int ret;
1012
1013         ldb = ldb_module_get_ctx(ac->module);
1014
1015         ac->sid = samdb_result_dom_sid(ac->msg, ac->msg, "objectSid");
1016         if (ac->sid == NULL) {
1017                 ac->sid = dom_sid_parse_talloc(ac->msg,
1018                            (const char *)ldb_dn_get_rdn_val(ac->msg->dn)->data);
1019                 if (!ac->sid) {
1020                         ldb_set_errstring(ldb,
1021                                         "No valid SID found in "
1022                                         "ForeignSecurityPrincipal CN!");
1023                         talloc_free(ac);
1024                         return LDB_ERR_CONSTRAINT_VIOLATION;
1025                 }
1026                 if ( ! samldb_msg_add_sid(ac->msg, "objectSid", ac->sid)) {
1027                         talloc_free(ac);
1028                         return LDB_ERR_OPERATIONS_ERROR;
1029                 }
1030         }
1031
1032         /* finally proceed with adding the entry */
1033         ret = samldb_add_step(ac, samldb_add_entry);
1034         if (ret != LDB_SUCCESS) return ret;
1035
1036         return samldb_first_step(ac);
1037 }
1038
1039 static int samldb_check_rdn(struct ldb_module *module, struct ldb_dn *dn)
1040 {
1041         struct ldb_context *ldb;
1042         const char *rdn_name;
1043
1044         ldb = ldb_module_get_ctx(module);
1045         rdn_name = ldb_dn_get_rdn_name(dn);
1046
1047         if (strcasecmp(rdn_name, "cn") != 0) {
1048                 ldb_asprintf_errstring(ldb,
1049                                         "Bad RDN (%s=) for samldb object, "
1050                                         "should be CN=!", rdn_name);
1051                 return LDB_ERR_CONSTRAINT_VIOLATION;
1052         }
1053
1054         return LDB_SUCCESS;
1055 }
1056
1057 /*
1058  * samldb_sid_from_dn (async)
1059  */
1060
1061 static int samldb_sid_from_dn(struct samldb_ctx *ac);
1062
1063 static int samldb_sid_from_dn_callback(struct ldb_request *req,
1064         struct ldb_reply *ares)
1065 {
1066         struct ldb_context *ldb;
1067         struct samldb_ctx *ac;
1068         int ret;
1069
1070         ac = talloc_get_type(req->context, struct samldb_ctx);
1071         ldb = ldb_module_get_ctx(ac->module);
1072
1073         if (!ares) {
1074                 ret = LDB_ERR_OPERATIONS_ERROR;
1075                 goto done;
1076         }
1077         if (ares->error != LDB_SUCCESS) {
1078                 return ldb_module_done(ac->req, ares->controls,
1079                                         ares->response, ares->error);
1080         }
1081
1082         switch (ares->type) {
1083         case LDB_REPLY_ENTRY:
1084                 /* save entry */
1085                 if (ac->res_sid != NULL) {
1086                         /* one too many! */
1087                         ldb_set_errstring(ldb,
1088                                 "Invalid number of results while searching "
1089                                 "for domain objects!");
1090                         ret = LDB_ERR_OPERATIONS_ERROR;
1091                         break;
1092                 }
1093                 ac->res_sid = samdb_result_dom_sid(ac, ares->message,
1094                         "objectSid");
1095
1096                 talloc_free(ares);
1097                 ret = LDB_SUCCESS;
1098                 break;
1099
1100         case LDB_REPLY_REFERRAL:
1101                 /* ignore */
1102                 talloc_free(ares);
1103                 ret = LDB_SUCCESS;
1104                 break;
1105
1106         case LDB_REPLY_DONE:
1107                 talloc_free(ares);
1108
1109                 /* found or not found, go on */
1110                 ret = samldb_next_step(ac);
1111                 break;
1112         }
1113
1114 done:
1115         if (ret != LDB_SUCCESS) {
1116                 return ldb_module_done(ac->req, NULL, NULL, ret);
1117         }
1118
1119         return LDB_SUCCESS;
1120 }
1121
1122 /* Finds the SID "res_sid" of an object with a given DN "dn" */
1123 static int samldb_sid_from_dn(struct samldb_ctx *ac)
1124 {
1125         struct ldb_context *ldb;
1126         static const char * const attrs[] = { "objectSid", NULL };
1127         struct ldb_request *req;
1128         int ret;
1129
1130         ldb = ldb_module_get_ctx(ac->module);
1131
1132         if (ac->dn == NULL)
1133                 return LDB_ERR_OPERATIONS_ERROR;
1134
1135         ret = ldb_build_search_req(&req, ldb, ac,
1136                                 ac->dn,
1137                                 LDB_SCOPE_BASE,
1138                                 NULL, attrs,
1139                                 NULL,
1140                                 ac, samldb_sid_from_dn_callback,
1141                                 ac->req);
1142         if (ret != LDB_SUCCESS)
1143                 return ret;
1144
1145         return ldb_next_request(ac->module, req);
1146 }
1147
1148 /*
1149  * samldb_user_dn_to_prim_group_rid (async)
1150  */
1151
1152 static int samldb_user_dn_to_prim_group_rid(struct samldb_ctx *ac);
1153
1154 static int samldb_user_dn_to_prim_group_rid_callback(struct ldb_request *req,
1155         struct ldb_reply *ares)
1156 {
1157         struct ldb_context *ldb;
1158         struct samldb_ctx *ac;
1159         int ret;
1160
1161         ac = talloc_get_type(req->context, struct samldb_ctx);
1162         ldb = ldb_module_get_ctx(ac->module);
1163
1164         if (!ares) {
1165                 ret = LDB_ERR_OPERATIONS_ERROR;
1166                 goto done;
1167         }
1168         if (ares->error != LDB_SUCCESS) {
1169                 return ldb_module_done(ac->req, ares->controls,
1170                                         ares->response, ares->error);
1171         }
1172
1173         switch (ares->type) {
1174         case LDB_REPLY_ENTRY:
1175                 /* save entry */
1176                 if (ac->prim_group_rid != 0) {
1177                         /* one too many! */
1178                         ldb_set_errstring(ldb,
1179                                 "Invalid number of results while searching "
1180                                 "for domain objects!");
1181                         ret = LDB_ERR_OPERATIONS_ERROR;
1182                         break;
1183                 }
1184                 ac->prim_group_rid = samdb_result_uint(ares->message,
1185                         "primaryGroupID", ~0);
1186
1187                 talloc_free(ares);
1188                 ret = LDB_SUCCESS;
1189                 break;
1190
1191         case LDB_REPLY_REFERRAL:
1192                 /* ignore */
1193                 talloc_free(ares);
1194                 ret = LDB_SUCCESS;
1195                 break;
1196
1197         case LDB_REPLY_DONE:
1198                 talloc_free(ares);
1199                 if (ac->prim_group_rid == 0) {
1200                         ldb_asprintf_errstring(ldb,
1201                                 "Unable to get the primary group RID!");
1202                         ret = LDB_ERR_OPERATIONS_ERROR;
1203                         break;
1204                 }
1205
1206                 /* found, go on */
1207                 ret = samldb_next_step(ac);
1208                 break;
1209         }
1210
1211 done:
1212         if (ret != LDB_SUCCESS) {
1213                 return ldb_module_done(ac->req, NULL, NULL, ret);
1214         }
1215
1216         return LDB_SUCCESS;
1217 }
1218
1219 /* Locates the "primaryGroupID" attribute from a certain user specified as
1220  * "user_dn". Saves the result in "prim_group_rid". */
1221 static int samldb_user_dn_to_prim_group_rid(struct samldb_ctx *ac)
1222 {
1223         struct ldb_context *ldb;
1224         static const char * const attrs[] = { "primaryGroupID", NULL };
1225         struct ldb_request *req;
1226         int ret;
1227
1228         ldb = ldb_module_get_ctx(ac->module);
1229
1230         if (ac->user_dn == NULL)
1231                 return LDB_ERR_OPERATIONS_ERROR;
1232
1233         ret = ldb_build_search_req(&req, ldb, ac,
1234                                 ac->user_dn,
1235                                 LDB_SCOPE_BASE,
1236                                 NULL, attrs,
1237                                 NULL,
1238                                 ac, samldb_user_dn_to_prim_group_rid_callback,
1239                                 ac->req);
1240         if (ret != LDB_SUCCESS)
1241                 return ret;
1242
1243         return ldb_next_request(ac->module, req);
1244 }
1245
1246 /*
1247  * samldb_prim_group_rid_to_users_cnt (async)
1248  */
1249
1250 static int samldb_prim_group_rid_to_users_cnt(struct samldb_ctx *ac);
1251
1252 static int samldb_prim_group_rid_to_users_cnt_callback(struct ldb_request *req,
1253         struct ldb_reply *ares)
1254 {
1255         struct ldb_context *ldb;
1256         struct samldb_ctx *ac;
1257         int ret;
1258
1259         ac = talloc_get_type(req->context, struct samldb_ctx);
1260         ldb = ldb_module_get_ctx(ac->module);
1261
1262         if (!ares) {
1263                 ret = LDB_ERR_OPERATIONS_ERROR;
1264                 goto done;
1265         }
1266         if (ares->error != LDB_SUCCESS) {
1267                 return ldb_module_done(ac->req, ares->controls,
1268                                         ares->response, ares->error);
1269         }
1270
1271         switch (ares->type) {
1272         case LDB_REPLY_ENTRY:
1273                 /* save entry */
1274                 ++(ac->users_cnt);
1275
1276                 talloc_free(ares);
1277                 ret = LDB_SUCCESS;
1278                 break;
1279
1280         case LDB_REPLY_REFERRAL:
1281                 /* ignore */
1282                 talloc_free(ares);
1283                 ret = LDB_SUCCESS;
1284                 break;
1285
1286         case LDB_REPLY_DONE:
1287                 talloc_free(ares);
1288
1289                 /* found or not found, go on */
1290                 ret = samldb_next_step(ac);
1291                 break;
1292         }
1293
1294 done:
1295         if (ret != LDB_SUCCESS) {
1296                 return ldb_module_done(ac->req, NULL, NULL, ret);
1297         }
1298
1299         return LDB_SUCCESS;
1300 }
1301
1302 /* Finds the amount of users which have the primary group "prim_group_rid" and
1303  * save the result in "users_cnt" */
1304 static int samldb_prim_group_rid_to_users_cnt(struct samldb_ctx *ac)
1305 {
1306         struct ldb_context *ldb;
1307         static const char * const attrs[] = { NULL };
1308         struct ldb_request *req;
1309         char *filter;
1310         int ret;
1311
1312         ldb = ldb_module_get_ctx(ac->module);
1313
1314         if ((ac->prim_group_rid == 0) || (ac->users_cnt != 0))
1315                 return LDB_ERR_OPERATIONS_ERROR;
1316
1317         filter = talloc_asprintf(ac, "(&(primaryGroupID=%u)(objectclass=user))",
1318                 ac->prim_group_rid);
1319         if (filter == NULL)
1320                 return LDB_ERR_OPERATIONS_ERROR;
1321
1322         ret = ldb_build_search_req(&req, ldb, ac,
1323                                 ldb_get_default_basedn(ldb),
1324                                 LDB_SCOPE_SUBTREE,
1325                                 filter, attrs,
1326                                 NULL,
1327                                 ac,
1328                                 samldb_prim_group_rid_to_users_cnt_callback,
1329                                 ac->req);
1330         if (ret != LDB_SUCCESS)
1331                 return ret;
1332
1333         return ldb_next_request(ac->module, req);
1334 }
1335
1336 /*
1337  * samldb_group_add_member (async)
1338  * samldb_group_del_member (async)
1339  */
1340
1341 static int samldb_group_add_del_member_callback(struct ldb_request *req,
1342         struct ldb_reply *ares)
1343 {
1344         struct ldb_context *ldb;
1345         struct samldb_ctx *ac;
1346         int ret;
1347
1348         ac = talloc_get_type(req->context, struct samldb_ctx);
1349         ldb = ldb_module_get_ctx(ac->module);
1350
1351         if (!ares) {
1352                 ret = LDB_ERR_OPERATIONS_ERROR;
1353                 goto done;
1354         }
1355         if (ares->error != LDB_SUCCESS) {
1356                 if (ares->error == LDB_ERR_NO_SUCH_ATTRIBUTE) {
1357                         /* On error "NO_SUCH_ATTRIBUTE" (delete of an invalid
1358                          * "member" attribute) return "UNWILLING_TO_PERFORM" */
1359                         ares->error = LDB_ERR_UNWILLING_TO_PERFORM;
1360                 }
1361                 return ldb_module_done(ac->req, ares->controls,
1362                                         ares->response, ares->error);
1363         }
1364         if (ares->type != LDB_REPLY_DONE) {
1365                 ldb_set_errstring(ldb,
1366                         "Invalid reply type!");
1367                 ret = LDB_ERR_OPERATIONS_ERROR;
1368                 goto done;
1369         }
1370
1371         ret = samldb_next_step(ac);
1372
1373 done:
1374         if (ret != LDB_SUCCESS) {
1375                 return ldb_module_done(ac->req, NULL, NULL, ret);
1376         }
1377
1378         return LDB_SUCCESS;
1379 }
1380
1381 /* Adds a member with DN "member_dn" to a group with DN "group_dn" */
1382 static int samldb_group_add_member(struct samldb_ctx *ac)
1383 {
1384         struct ldb_context *ldb;
1385         struct ldb_request *req;
1386         struct ldb_message *msg;
1387         int ret;
1388
1389         ldb = ldb_module_get_ctx(ac->module);
1390
1391         if ((ac->group_dn == NULL) || (ac->member_dn == NULL))
1392                 return LDB_ERR_OPERATIONS_ERROR;
1393
1394         msg = ldb_msg_new(ac);
1395         msg->dn = ac->group_dn;
1396         samdb_msg_add_addval(ldb, ac, msg, "member",
1397                 ldb_dn_get_linearized(ac->member_dn));
1398
1399         ret = ldb_build_mod_req(&req, ldb, ac,
1400                                 msg, NULL,
1401                                 ac, samldb_group_add_del_member_callback,
1402                                 ac->req);
1403         if (ret != LDB_SUCCESS)
1404                 return ret;
1405
1406         return ldb_next_request(ac->module, req);
1407 }
1408
1409 /* Removes a member with DN "member_dn" from a group with DN "group_dn" */
1410 static int samldb_group_del_member(struct samldb_ctx *ac)
1411 {
1412         struct ldb_context *ldb;
1413         struct ldb_request *req;
1414         struct ldb_message *msg;
1415         int ret;
1416
1417         ldb = ldb_module_get_ctx(ac->module);
1418
1419         if ((ac->group_dn == NULL) || (ac->member_dn == NULL))
1420                 return LDB_ERR_OPERATIONS_ERROR;
1421
1422         msg = ldb_msg_new(ac);
1423         msg->dn = ac->group_dn;
1424         samdb_msg_add_delval(ldb, ac, msg, "member",
1425                 ldb_dn_get_linearized(ac->member_dn));
1426
1427         ret = ldb_build_mod_req(&req, ldb, ac,
1428                                 msg, NULL,
1429                                 ac, samldb_group_add_del_member_callback,
1430                                 ac->req);
1431         if (ret != LDB_SUCCESS)
1432                 return ret;
1433
1434         return ldb_next_request(ac->module, req);
1435 }
1436
1437
1438 static int samldb_prim_group_change_1(struct samldb_ctx *ac)
1439 {
1440         struct ldb_context *ldb;
1441         uint32_t rid;
1442
1443         ldb = ldb_module_get_ctx(ac->module);
1444
1445         ac->user_dn = ac->msg->dn;
1446
1447         rid = samdb_result_uint(ac->msg, "primaryGroupID", ~0);
1448         ac->sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
1449         if (ac->sid == NULL)
1450                 return LDB_ERR_OPERATIONS_ERROR;
1451         ac->res_dn = NULL;
1452
1453         ac->prim_group_rid = 0;
1454
1455         return samldb_next_step(ac);
1456 }
1457
1458 static int samldb_prim_group_change_2(struct samldb_ctx *ac)
1459 {
1460         struct ldb_context *ldb;
1461
1462         ldb = ldb_module_get_ctx(ac->module);
1463
1464         if (ac->res_dn != NULL)
1465                 ac->new_prim_group_dn = ac->res_dn;
1466         else
1467                 return LDB_ERR_UNWILLING_TO_PERFORM;
1468
1469         ac->sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb),
1470                 ac->prim_group_rid);
1471         if (ac->sid == NULL)
1472                 return LDB_ERR_OPERATIONS_ERROR;
1473         ac->res_dn = NULL;
1474
1475         return samldb_next_step(ac);
1476 }
1477
1478 static int samldb_prim_group_change_4(struct samldb_ctx *ac);
1479 static int samldb_prim_group_change_5(struct samldb_ctx *ac);
1480 static int samldb_prim_group_change_6(struct samldb_ctx *ac);
1481
1482 static int samldb_prim_group_change_3(struct samldb_ctx *ac)
1483 {
1484         int ret;
1485
1486         if (ac->res_dn != NULL)
1487                 ac->old_prim_group_dn = ac->res_dn;
1488         else
1489                 return LDB_ERR_UNWILLING_TO_PERFORM;
1490
1491         /* Only update when the primary group changed */
1492         if (ldb_dn_compare(ac->old_prim_group_dn, ac->new_prim_group_dn) != 0) {
1493                 ac->member_dn = ac->user_dn;
1494                 /* Remove the "member" attribute of the actual (new) primary
1495                  * group */
1496
1497                 ret = samldb_add_step(ac, samldb_prim_group_change_4);
1498                 if (ret != LDB_SUCCESS) return ret;
1499
1500                 ret = samldb_add_step(ac, samldb_group_del_member);
1501                 if (ret != LDB_SUCCESS) return ret;
1502
1503                 /* Add a "member" attribute for the previous primary group */
1504
1505                 ret = samldb_add_step(ac, samldb_prim_group_change_5);
1506                 if (ret != LDB_SUCCESS) return ret;
1507
1508                 ret = samldb_add_step(ac, samldb_group_add_member);
1509                 if (ret != LDB_SUCCESS) return ret;
1510         }
1511
1512         ret = samldb_add_step(ac, samldb_prim_group_change_6);
1513         if (ret != LDB_SUCCESS) return ret;
1514
1515         return samldb_next_step(ac);
1516 }
1517
1518 static int samldb_prim_group_change_4(struct samldb_ctx *ac)
1519 {
1520         ac->group_dn = ac->new_prim_group_dn;
1521
1522         return samldb_next_step(ac);
1523 }
1524
1525 static int samldb_prim_group_change_5(struct samldb_ctx *ac)
1526 {
1527         ac->group_dn = ac->old_prim_group_dn;
1528
1529         return samldb_next_step(ac);
1530 }
1531
1532 static int samldb_prim_group_change_6(struct samldb_ctx *ac)
1533 {
1534         return ldb_next_request(ac->module, ac->req);
1535 }
1536
1537 static int samldb_prim_group_change(struct samldb_ctx *ac)
1538 {
1539         int ret;
1540
1541         /* Finds out the DN of the new primary group */
1542
1543         ret = samldb_add_step(ac, samldb_prim_group_change_1);
1544         if (ret != LDB_SUCCESS) return ret;
1545
1546         ret = samldb_add_step(ac, samldb_dn_from_sid);
1547         if (ret != LDB_SUCCESS) return ret;
1548
1549         ret = samldb_add_step(ac, samldb_user_dn_to_prim_group_rid);
1550         if (ret != LDB_SUCCESS) return ret;
1551
1552         /* Finds out the DN of the old primary group */
1553
1554         ret = samldb_add_step(ac, samldb_prim_group_change_2);
1555         if (ret != LDB_SUCCESS) return ret;
1556
1557         ret = samldb_add_step(ac, samldb_dn_from_sid);
1558         if (ret != LDB_SUCCESS) return ret;
1559
1560         ret = samldb_add_step(ac, samldb_prim_group_change_3);
1561         if (ret != LDB_SUCCESS) return ret;
1562
1563         return samldb_first_step(ac);
1564 }
1565
1566
1567 static int samldb_member_check_1(struct samldb_ctx *ac)
1568 {
1569         struct ldb_context *ldb;
1570         struct ldb_message_element *el;
1571
1572         ldb = ldb_module_get_ctx(ac->module);
1573
1574         el = ldb_msg_find_element(ac->msg, "member");
1575
1576         ac->user_dn = ldb_dn_from_ldb_val(ac, ldb, &el->values[ac->cnt]);
1577         if (!ldb_dn_validate(ac->user_dn))
1578                 return LDB_ERR_OPERATIONS_ERROR;
1579         ac->prim_group_rid = 0;
1580
1581         return samldb_next_step(ac);
1582 }
1583
1584 static int samldb_member_check_2(struct samldb_ctx *ac)
1585 {
1586         struct ldb_context *ldb;
1587
1588         ldb = ldb_module_get_ctx(ac->module);
1589
1590         ac->sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb),
1591                 ac->prim_group_rid);
1592         if (ac->sid == NULL)
1593                 return LDB_ERR_OPERATIONS_ERROR;
1594         ac->res_dn = NULL;
1595
1596         return samldb_next_step(ac);
1597 }
1598
1599 static int samldb_member_check_3(struct samldb_ctx *ac)
1600 {
1601         if (ldb_dn_compare(ac->res_dn, ac->msg->dn) == 0)
1602                 return LDB_ERR_ENTRY_ALREADY_EXISTS;
1603
1604         ++(ac->cnt);
1605
1606         return samldb_next_step(ac);
1607 }
1608
1609 static int samldb_member_check_4(struct samldb_ctx *ac)
1610 {
1611         return ldb_next_request(ac->module, ac->req);
1612 }
1613
1614 static int samldb_member_check(struct samldb_ctx *ac)
1615 {
1616         struct ldb_message_element *el;
1617         int i, ret;
1618
1619         el = ldb_msg_find_element(ac->msg, "member");
1620         ac->cnt = 0;
1621         for (i = 0; i < el->num_values; i++) {
1622                 /* Denies to add "member"s to groups which are primary ones
1623                  * for them */
1624                 ret = samldb_add_step(ac, samldb_member_check_1);
1625                 if (ret != LDB_SUCCESS) return ret;
1626
1627                 ret = samldb_add_step(ac, samldb_user_dn_to_prim_group_rid);
1628                 if (ret != LDB_SUCCESS) return ret;
1629
1630                 ret = samldb_add_step(ac, samldb_member_check_2);
1631                 if (ret != LDB_SUCCESS) return ret;
1632
1633                 ret = samldb_add_step(ac, samldb_dn_from_sid);
1634                 if (ret != LDB_SUCCESS) return ret;
1635
1636                 ret = samldb_add_step(ac, samldb_member_check_3);
1637                 if (ret != LDB_SUCCESS) return ret;
1638         }
1639
1640         ret = samldb_add_step(ac, samldb_member_check_4);
1641         if (ret != LDB_SUCCESS) return ret;
1642
1643         return samldb_first_step(ac);
1644 }
1645
1646
1647 static int samldb_prim_group_users_check_1(struct samldb_ctx *ac)
1648 {
1649         ac->dn = ac->req->op.del.dn;
1650         ac->res_sid = NULL;
1651
1652         return samldb_next_step(ac);
1653 }
1654
1655 static int samldb_prim_group_users_check_2(struct samldb_ctx *ac)
1656 {
1657         NTSTATUS status;
1658         uint32_t rid;
1659
1660         if (ac->res_sid == NULL) {
1661                 /* No SID - therefore ok here */
1662                 return ldb_next_request(ac->module, ac->req);
1663         }
1664         status = dom_sid_split_rid(ac, ac->res_sid, NULL, &rid);
1665         if (!NT_STATUS_IS_OK(status))
1666                 return LDB_ERR_OPERATIONS_ERROR;
1667
1668         if (rid == 0) {
1669                 /* Special object (security principal?) */
1670                 return ldb_next_request(ac->module, ac->req);
1671         }
1672
1673         ac->prim_group_rid = rid;
1674         ac->users_cnt = 0;
1675
1676         return samldb_next_step(ac);
1677 }
1678
1679 static int samldb_prim_group_users_check_3(struct samldb_ctx *ac)
1680 {
1681         if (ac->users_cnt > 0)
1682                 return LDB_ERR_ENTRY_ALREADY_EXISTS;
1683
1684         return ldb_next_request(ac->module, ac->req);
1685 }
1686
1687 static int samldb_prim_group_users_check(struct samldb_ctx *ac)
1688 {
1689         int ret;
1690
1691         /* Finds out the SID/RID of the domain object */
1692
1693         ret = samldb_add_step(ac, samldb_prim_group_users_check_1);
1694         if (ret != LDB_SUCCESS) return ret;
1695
1696         ret = samldb_add_step(ac, samldb_sid_from_dn);
1697         if (ret != LDB_SUCCESS) return ret;
1698
1699         /* Deny delete requests from groups which are primary ones */
1700
1701         ret = samldb_add_step(ac, samldb_prim_group_users_check_2);
1702         if (ret != LDB_SUCCESS) return ret;
1703
1704         ret = samldb_add_step(ac, samldb_prim_group_rid_to_users_cnt);
1705         if (ret != LDB_SUCCESS) return ret;
1706
1707         ret = samldb_add_step(ac, samldb_prim_group_users_check_3);
1708         if (ret != LDB_SUCCESS) return ret;
1709
1710         return samldb_first_step(ac);
1711 }
1712
1713
1714 /* add */
1715 static int samldb_add(struct ldb_module *module, struct ldb_request *req)
1716 {
1717         struct ldb_context *ldb;
1718         struct samldb_ctx *ac;
1719         int ret;
1720
1721         ldb = ldb_module_get_ctx(module);
1722         ldb_debug(ldb, LDB_DEBUG_TRACE, "samldb_add\n");
1723
1724         /* do not manipulate our control entries */
1725         if (ldb_dn_is_special(req->op.add.message->dn)) {
1726                 return ldb_next_request(module, req);
1727         }
1728
1729         ac = samldb_ctx_init(module, req);
1730         if (ac == NULL) {
1731                 return LDB_ERR_OPERATIONS_ERROR;
1732         }
1733
1734         /* build the new msg */
1735         ac->msg = ldb_msg_copy(ac, ac->req->op.add.message);
1736         if (!ac->msg) {
1737                 talloc_free(ac);
1738                 ldb_debug(ldb, LDB_DEBUG_FATAL,
1739                           "samldb_add: ldb_msg_copy failed!\n");
1740                 return LDB_ERR_OPERATIONS_ERROR;
1741         }
1742
1743         if (samdb_find_attribute(ldb, ac->msg,
1744                                  "objectclass", "computer") != NULL) {
1745
1746                 /* make sure the computer object also has the 'user'
1747                  * objectclass so it will be handled by the next call */
1748                 ret = samdb_find_or_add_value(ldb, ac->msg,
1749                                                 "objectclass", "user");
1750                 if (ret != LDB_SUCCESS) {
1751                         talloc_free(ac);
1752                         return ret;
1753                 }
1754         }
1755
1756         if (samdb_find_attribute(ldb, ac->msg,
1757                                  "objectclass", "user") != NULL) {
1758
1759                 ret = samldb_check_rdn(module, ac->req->op.add.message->dn);
1760                 if (ret != LDB_SUCCESS) {
1761                         talloc_free(ac);
1762                         return ret;
1763                 }
1764
1765                 return samldb_fill_object(ac, "user");
1766         }
1767
1768         if (samdb_find_attribute(ldb, ac->msg,
1769                                  "objectclass", "group") != NULL) {
1770
1771                 ret = samldb_check_rdn(module, ac->req->op.add.message->dn);
1772                 if (ret != LDB_SUCCESS) {
1773                         talloc_free(ac);
1774                         return ret;
1775                 }
1776
1777                 return samldb_fill_object(ac, "group");
1778         }
1779
1780         /* perhaps a foreignSecurityPrincipal? */
1781         if (samdb_find_attribute(ldb, ac->msg,
1782                                  "objectclass",
1783                                  "foreignSecurityPrincipal") != NULL) {
1784
1785                 ret = samldb_check_rdn(module, ac->req->op.add.message->dn);
1786                 if (ret != LDB_SUCCESS) {
1787                         talloc_free(ac);
1788                         return ret;
1789                 }
1790
1791                 return samldb_fill_foreignSecurityPrincipal_object(ac);
1792         }
1793
1794         if (samdb_find_attribute(ldb, ac->msg,
1795                                  "objectclass", "classSchema") != NULL) {
1796
1797                 ret = samldb_check_rdn(module, ac->req->op.add.message->dn);
1798                 if (ret != LDB_SUCCESS) {
1799                         talloc_free(ac);
1800                         return ret;
1801                 }
1802
1803                 return samldb_fill_object(ac, "classSchema");
1804         }
1805
1806         if (samdb_find_attribute(ldb, ac->msg,
1807                                  "objectclass", "attributeSchema") != NULL) {
1808
1809                 ret = samldb_check_rdn(module, ac->req->op.add.message->dn);
1810                 if (ret != LDB_SUCCESS) {
1811                         talloc_free(ac);
1812                         return ret;
1813                 }
1814
1815                 return samldb_fill_object(ac, "attributeSchema");
1816         }
1817
1818         talloc_free(ac);
1819
1820         /* nothing matched, go on */
1821         return ldb_next_request(module, req);
1822 }
1823
1824 /* modify */
1825 static int samldb_modify(struct ldb_module *module, struct ldb_request *req)
1826 {
1827         struct ldb_context *ldb;
1828         struct ldb_message *msg;
1829         struct ldb_message_element *el, *el2;
1830         int ret;
1831         uint32_t account_type;
1832
1833         if (ldb_dn_is_special(req->op.mod.message->dn)) {
1834                 /* do not manipulate our control entries */
1835                 return ldb_next_request(module, req);
1836         }
1837
1838         ldb = ldb_module_get_ctx(module);
1839
1840         if (ldb_msg_find_element(req->op.mod.message, "sAMAccountType") != NULL) {
1841                 ldb_asprintf_errstring(ldb,
1842                         "sAMAccountType must not be specified!");
1843                 return LDB_ERR_UNWILLING_TO_PERFORM;
1844         }
1845
1846         /* msDS-IntId is not allowed to be modified
1847          * except when modification comes from replication */
1848         if (ldb_msg_find_element(req->op.mod.message, "msDS-IntId")) {
1849                 if (!ldb_request_get_control(req, DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
1850                         return LDB_ERR_CONSTRAINT_VIOLATION;
1851                 }
1852         }
1853
1854         /* TODO: do not modify original request, create a new one */
1855
1856         el = ldb_msg_find_element(req->op.mod.message, "groupType");
1857         if (el && el->flags & (LDB_FLAG_MOD_ADD|LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
1858                 uint32_t group_type;
1859
1860                 req->op.mod.message = msg = ldb_msg_copy_shallow(req,
1861                         req->op.mod.message);
1862
1863                 group_type = strtoul((const char *)el->values[0].data, NULL, 0);
1864                 account_type =  ds_gtype2atype(group_type);
1865                 ret = samdb_msg_add_uint(ldb, msg, msg,
1866                                          "sAMAccountType",
1867                                          account_type);
1868                 if (ret != LDB_SUCCESS) {
1869                         return ret;
1870                 }
1871                 el2 = ldb_msg_find_element(msg, "sAMAccountType");
1872                 el2->flags = LDB_FLAG_MOD_REPLACE;
1873         }
1874
1875         el = ldb_msg_find_element(req->op.mod.message, "primaryGroupID");
1876         if (el && el->flags & (LDB_FLAG_MOD_ADD|LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
1877                 struct samldb_ctx *ac;
1878
1879                 ac = samldb_ctx_init(module, req);
1880                 if (ac == NULL)
1881                         return LDB_ERR_OPERATIONS_ERROR;
1882
1883                 req->op.mod.message = ac->msg = ldb_msg_copy_shallow(req,
1884                         req->op.mod.message);
1885
1886                 return samldb_prim_group_change(ac);
1887         }
1888
1889         el = ldb_msg_find_element(req->op.mod.message, "userAccountControl");
1890         if (el && el->flags & (LDB_FLAG_MOD_ADD|LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
1891                 uint32_t user_account_control;
1892
1893                 req->op.mod.message = msg = ldb_msg_copy_shallow(req,
1894                         req->op.mod.message);
1895
1896                 user_account_control = strtoul((const char *)el->values[0].data,
1897                         NULL, 0);
1898                 account_type = ds_uf2atype(user_account_control);
1899                 ret = samdb_msg_add_uint(ldb, msg, msg,
1900                                          "sAMAccountType",
1901                                          account_type);
1902                 if (ret != LDB_SUCCESS) {
1903                         return ret;
1904                 }
1905                 el2 = ldb_msg_find_element(msg, "sAMAccountType");
1906                 el2->flags = LDB_FLAG_MOD_REPLACE;
1907
1908                 if (user_account_control & UF_SERVER_TRUST_ACCOUNT) {
1909                         ret = samdb_msg_add_string(ldb, msg, msg,
1910                                                    "isCriticalSystemObject", "TRUE");
1911                         if (ret != LDB_SUCCESS) {
1912                                 return ret;
1913                         }
1914                         el2 = ldb_msg_find_element(msg, "isCriticalSystemObject");
1915                         el2->flags = LDB_FLAG_MOD_REPLACE;
1916
1917                         /* DCs have primaryGroupID of DOMAIN_RID_DCS */
1918                         if (!ldb_msg_find_element(msg, "primaryGroupID")) {
1919                                 ret = samdb_msg_add_uint(ldb, msg, msg,
1920                                                          "primaryGroupID", DOMAIN_RID_DCS);
1921                                 if (ret != LDB_SUCCESS) {
1922                                         return ret;
1923                                 }
1924                                 el2 = ldb_msg_find_element(msg, "primaryGroupID");
1925                                 el2->flags = LDB_FLAG_MOD_REPLACE;
1926                         }
1927                 }
1928         }
1929
1930         el = ldb_msg_find_element(req->op.mod.message, "member");
1931         if (el && el->flags & (LDB_FLAG_MOD_ADD|LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
1932                 struct samldb_ctx *ac;
1933
1934                 ac = samldb_ctx_init(module, req);
1935                 if (ac == NULL)
1936                         return LDB_ERR_OPERATIONS_ERROR;
1937
1938                 req->op.mod.message = ac->msg = ldb_msg_copy_shallow(req,
1939                         req->op.mod.message);
1940
1941                 return samldb_member_check(ac);
1942         }
1943
1944         /* nothing matched, go on */
1945         return ldb_next_request(module, req);
1946 }
1947
1948 /* delete */
1949 static int samldb_delete(struct ldb_module *module, struct ldb_request *req)
1950 {
1951         struct samldb_ctx *ac;
1952
1953         if (ldb_dn_is_special(req->op.del.dn)) {
1954                 /* do not manipulate our control entries */
1955                 return ldb_next_request(module, req);
1956         }
1957
1958         ac = samldb_ctx_init(module, req);
1959         if (ac == NULL)
1960                 return LDB_ERR_OPERATIONS_ERROR;
1961
1962         return samldb_prim_group_users_check(ac);
1963 }
1964
1965 static int samldb_extended_allocate_rid_pool(struct ldb_module *module, struct ldb_request *req)
1966 {
1967         struct ldb_context *ldb = ldb_module_get_ctx(module);
1968         struct dsdb_fsmo_extended_op *exop;
1969         int ret;
1970
1971         exop = talloc_get_type(req->op.extended.data, struct dsdb_fsmo_extended_op);
1972         if (!exop) {
1973                 ldb_debug(ldb, LDB_DEBUG_FATAL, "samldb_extended_allocate_rid_pool: invalid extended data\n");
1974                 return LDB_ERR_PROTOCOL_ERROR;
1975         }
1976
1977         ret = ridalloc_allocate_rid_pool_fsmo(module, exop);
1978         if (ret != LDB_SUCCESS) {
1979                 return ret;
1980         }
1981
1982         return ldb_module_done(req, NULL, NULL, LDB_SUCCESS);
1983 }
1984
1985 static int samldb_extended(struct ldb_module *module, struct ldb_request *req)
1986 {
1987         if (strcmp(req->op.extended.oid, DSDB_EXTENDED_ALLOCATE_RID_POOL) == 0) {
1988                 return samldb_extended_allocate_rid_pool(module, req);
1989         }
1990
1991         return ldb_next_request(module, req);
1992 }
1993
1994
1995 _PUBLIC_ const struct ldb_module_ops ldb_samldb_module_ops = {
1996         .name          = "samldb",
1997         .add           = samldb_add,
1998         .modify        = samldb_modify,
1999         .del           = samldb_delete,
2000         .extended      = samldb_extended
2001 };
2002