source4/dsdb/schema/schema_init.c

   1 /*
   2    Unix SMB/CIFS Implementation.
   3    DSDB schema header
   4
   5    Copyright (C) Stefan Metzmacher <metze@samba.org> 2006-2007
   6    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2006-2008
   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 #include "includes.h"
  24 #include "dsdb/samdb/samdb.h"
  25 #include "dsdb/common/util.h"
  26 #include <ldb_errors.h>
  27 #include "../lib/util/dlinklist.h"
  28 #include "librpc/gen_ndr/ndr_misc.h"
  29 #include "librpc/gen_ndr/ndr_drsuapi.h"
  30 #include "librpc/gen_ndr/ndr_drsblobs.h"
  31 #include "param/param.h"
  32 #include <ldb_module.h>
  33 #include "../lib/util/asn1.h"
  34
  35 #undef strcasecmp
  36
  37 struct dsdb_schema *dsdb_new_schema(TALLOC_CTX *mem_ctx)
  38 {
  39         struct dsdb_schema *schema = talloc_zero(mem_ctx, struct dsdb_schema);
  40         if (!schema) {
  41                 return NULL;
  42         }
  43
  44         return schema;
  45 }
  46
  47 struct dsdb_schema *dsdb_schema_copy_shallow(TALLOC_CTX *mem_ctx,
  48                                              struct ldb_context *ldb,
  49                                              const struct dsdb_schema *schema)
  50 {
  51         int ret;
  52         struct dsdb_class *cls;
  53         struct dsdb_attribute *attr;
  54         struct dsdb_schema *schema_copy;
  55
  56         schema_copy = dsdb_new_schema(mem_ctx);
  57         if (!schema_copy) {
  58                 return NULL;
  59         }
  60
  61         /* copy prexiMap & schemaInfo */
  62         schema_copy->prefixmap = dsdb_schema_pfm_copy_shallow(schema_copy,
  63                                                               schema->prefixmap);
  64         if (!schema_copy->prefixmap) {
  65                 goto failed;
  66         }
  67
  68         schema_copy->schema_info = talloc(schema_copy, struct dsdb_schema_info);
  69         if (!schema_copy->schema_info) {
  70                 goto failed;
  71         }
  72         *schema_copy->schema_info = *schema->schema_info;
  73
  74         /* copy classes and attributes*/
  75         for (cls = schema->classes; cls; cls = cls->next) {
  76                 struct dsdb_class *class_copy = talloc_memdup(schema_copy,
  77                                                               cls, sizeof(*cls));
  78                 if (!class_copy) {
  79                         goto failed;
  80                 }
  81                 DLIST_ADD(schema_copy->classes, class_copy);
  82         }
  83         schema_copy->num_classes = schema->num_classes;
  84
  85         for (attr = schema->attributes; attr; attr = attr->next) {
  86                 struct dsdb_attribute *a_copy = talloc_memdup(schema_copy,
  87                                                               attr, sizeof(*attr));
  88                 if (!a_copy) {
  89                         goto failed;
  90                 }
  91                 DLIST_ADD(schema_copy->attributes, a_copy);
  92         }
  93         schema_copy->num_attributes = schema->num_attributes;
  94
  95         /* rebuild indexes */
  96         ret = dsdb_setup_sorted_accessors(ldb, schema_copy);
  97         if (ret != LDB_SUCCESS) {
  98                 goto failed;
  99         }
 100
 101         /* leave reload_seq_number = 0 so it will be refresh ASAP */
 102
 103         return schema_copy;
 104
 105 failed:
 106         talloc_free(schema_copy);
 107         return NULL;
 108 }
 109
 110
 111 WERROR dsdb_load_prefixmap_from_drsuapi(struct dsdb_schema *schema,
 112                                         const struct drsuapi_DsReplicaOIDMapping_Ctr *ctr)
 113 {
 114         WERROR werr;
 115         struct dsdb_schema_info *schema_info = NULL;
 116         struct dsdb_schema_prefixmap *pfm = NULL;
 117
 118         werr = dsdb_schema_pfm_from_drsuapi_pfm(ctr, true, schema, &pfm, &schema_info);
 119         W_ERROR_NOT_OK_RETURN(werr);
 120
 121         /* set loaded prefixMap */
 122         talloc_free(schema->prefixmap);
 123         schema->prefixmap = pfm;
 124
 125         talloc_free(schema->schema_info);
 126         schema->schema_info = schema_info;
 127
 128         return WERR_OK;
 129 }
 130
 131 static WERROR _dsdb_prefixmap_from_ldb_val(const struct ldb_val *pfm_ldb_val,
 132                                            TALLOC_CTX *mem_ctx,
 133                                            struct dsdb_schema_prefixmap **_pfm)
 134 {
 135         WERROR werr;
 136         enum ndr_err_code ndr_err;
 137         struct prefixMapBlob pfm_blob;
 138
 139         TALLOC_CTX *temp_ctx = talloc_new(mem_ctx);
 140         W_ERROR_HAVE_NO_MEMORY(temp_ctx);
 141
 142         ndr_err = ndr_pull_struct_blob(pfm_ldb_val, temp_ctx,
 143                                 &pfm_blob,
 144                                 (ndr_pull_flags_fn_t)ndr_pull_prefixMapBlob);
 145         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 146                 NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
 147                 DEBUG(0,("_dsdb_prefixmap_from_ldb_val: Failed to parse prefixmap of length %u: %s\n",
 148                          (unsigned int)pfm_ldb_val->length, ndr_map_error2string(ndr_err)));
 149                 talloc_free(temp_ctx);
 150                 return ntstatus_to_werror(nt_status);
 151         }
 152
 153         if (pfm_blob.version != PREFIX_MAP_VERSION_DSDB) {
 154                 DEBUG(0,("_dsdb_prefixmap_from_ldb_val: pfm_blob->version %u incorrect\n", (unsigned int)pfm_blob.version));
 155                 talloc_free(temp_ctx);
 156                 return WERR_VERSION_PARSE_ERROR;
 157         }
 158
 159         /* call the drsuapi version */
 160         werr = dsdb_schema_pfm_from_drsuapi_pfm(&pfm_blob.ctr.dsdb, false, mem_ctx, _pfm, NULL);
 161         if (!W_ERROR_IS_OK(werr)) {
 162                 DEBUG(0, (__location__ " dsdb_schema_pfm_from_drsuapi_pfm failed: %s\n", win_errstr(werr)));
 163                 talloc_free(temp_ctx);
 164                 return werr;
 165         }
 166
 167         talloc_free(temp_ctx);
 168
 169         return werr;
 170 }
 171
 172 WERROR dsdb_load_oid_mappings_ldb(struct dsdb_schema *schema,
 173                                   const struct ldb_val *prefixMap,
 174                                   const struct ldb_val *schemaInfo)
 175 {
 176         WERROR werr;
 177         struct dsdb_schema_info *schema_info = NULL;
 178         struct dsdb_schema_prefixmap *pfm = NULL;
 179         TALLOC_CTX *mem_ctx;
 180
 181         /* verify schemaInfo blob is valid one */
 182         if (!dsdb_schema_info_blob_is_valid(schemaInfo)) {
 183                 DEBUG(0,(__location__": dsdb_schema_info_blob_is_valid() failed.\n"));
 184                 return WERR_INVALID_PARAMETER;
 185         }
 186
 187         mem_ctx = talloc_new(schema);
 188         W_ERROR_HAVE_NO_MEMORY(mem_ctx);
 189
 190         /* fetch prefixMap */
 191         werr = _dsdb_prefixmap_from_ldb_val(prefixMap,
 192                                             mem_ctx, &pfm);
 193         if (!W_ERROR_IS_OK(werr)) {
 194                 DEBUG(0, (__location__ " _dsdb_prefixmap_from_ldb_val failed: %s\n", win_errstr(werr)));
 195                 talloc_free(mem_ctx);
 196                 return werr;
 197         }
 198
 199         /* decode schema_info */
 200         werr = dsdb_schema_info_from_blob(schemaInfo, mem_ctx, &schema_info);
 201         if (!W_ERROR_IS_OK(werr)) {
 202                 DEBUG(0, (__location__ " dsdb_schema_info_from_blob failed: %s\n", win_errstr(werr)));
 203                 talloc_free(mem_ctx);
 204                 return werr;
 205         }
 206
 207         /* store prefixMap and schema_info into cached Schema */
 208         talloc_free(schema->prefixmap);
 209         schema->prefixmap = talloc_steal(schema, pfm);
 210
 211         talloc_free(schema->schema_info);
 212         schema->schema_info = talloc_steal(schema, schema_info);
 213
 214         /* clean up locally allocated mem */
 215         talloc_free(mem_ctx);
 216
 217         return WERR_OK;
 218 }
 219
 220 WERROR dsdb_get_oid_mappings_drsuapi(const struct dsdb_schema *schema,
 221                                      bool include_schema_info,
 222                                      TALLOC_CTX *mem_ctx,
 223                                      struct drsuapi_DsReplicaOIDMapping_Ctr **_ctr)
 224 {
 225         return dsdb_drsuapi_pfm_from_schema_pfm(schema->prefixmap,
 226                                                 include_schema_info ? schema->schema_info : NULL,
 227                                                 mem_ctx, _ctr);
 228 }
 229
 230 WERROR dsdb_get_drsuapi_prefixmap_as_blob(const struct drsuapi_DsReplicaOIDMapping_Ctr *ctr,
 231                                           TALLOC_CTX *mem_ctx,
 232                                           struct ldb_val *prefixMap)
 233 {
 234         struct prefixMapBlob pfm;
 235         enum ndr_err_code ndr_err;
 236         pfm.version     = PREFIX_MAP_VERSION_DSDB;
 237         pfm.reserved    = 0;
 238         pfm.ctr.dsdb    = *ctr;
 239
 240         ndr_err = ndr_push_struct_blob(prefixMap, mem_ctx, &pfm,
 241                                         (ndr_push_flags_fn_t)ndr_push_prefixMapBlob);
 242         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 243                 NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
 244                 return ntstatus_to_werror(nt_status);
 245         }
 246         return WERR_OK;
 247 }
 248
 249 WERROR dsdb_get_oid_mappings_ldb(const struct dsdb_schema *schema,
 250                                  TALLOC_CTX *mem_ctx,
 251                                  struct ldb_val *prefixMap,
 252                                  struct ldb_val *schemaInfo)
 253 {
 254         WERROR status;
 255         struct drsuapi_DsReplicaOIDMapping_Ctr *ctr;
 256
 257         status = dsdb_get_oid_mappings_drsuapi(schema, false, mem_ctx, &ctr);
 258         W_ERROR_NOT_OK_RETURN(status);
 259
 260         status = dsdb_get_drsuapi_prefixmap_as_blob(ctr, mem_ctx, prefixMap);
 261         talloc_free(ctr);
 262         W_ERROR_NOT_OK_RETURN(status);
 263
 264         status = dsdb_blob_from_schema_info(schema->schema_info, mem_ctx, schemaInfo);
 265         W_ERROR_NOT_OK_RETURN(status);
 266
 267         return WERR_OK;
 268 }
 269
 270
 271 /*
 272  * this function is called from within a ldb transaction from the schema_fsmo module
 273  */
 274 WERROR dsdb_create_prefix_mapping(struct ldb_context *ldb, struct dsdb_schema *schema, const char *full_oid)
 275 {
 276         WERROR status;
 277         uint32_t attid;
 278         TALLOC_CTX *mem_ctx;
 279         struct dsdb_schema_prefixmap *pfm;
 280         struct dsdb_schema_prefixmap *orig_pfm = NULL;
 281
 282         mem_ctx = talloc_new(ldb);
 283         W_ERROR_HAVE_NO_MEMORY(mem_ctx);
 284
 285         /* Read prefixes from disk*/
 286         status = dsdb_read_prefixes_from_ldb(ldb, mem_ctx, &pfm);
 287         if (!W_ERROR_IS_OK(status)) {
 288                 DEBUG(0,("dsdb_create_prefix_mapping: dsdb_read_prefixes_from_ldb: %s\n",
 289                         win_errstr(status)));
 290                 talloc_free(mem_ctx);
 291                 return status;
 292         }
 293
 294         /* Check if there is a prefix for the oid in the prefixes array*/
 295         status = dsdb_schema_pfm_find_oid(pfm, full_oid, NULL);
 296         if (W_ERROR_IS_OK(status)) {
 297                 /* prefix found*/
 298                 talloc_free(mem_ctx);
 299                 return status;
 300         } else if (!W_ERROR_EQUAL(status, WERR_NOT_FOUND)) {
 301                 /* error */
 302                 DEBUG(0,("dsdb_create_prefix_mapping: dsdb_find_prefix_for_oid: %s\n",
 303                         win_errstr(status)));
 304                 talloc_free(mem_ctx);
 305                 return status;
 306         }
 307
 308         /* Create the new mapping for the prefix of full_oid */
 309         status = dsdb_schema_pfm_make_attid(pfm, full_oid, &attid);
 310         if (!W_ERROR_IS_OK(status)) {
 311                 DEBUG(0,("dsdb_create_prefix_mapping: dsdb_schema_pfm_make_attid: %s\n",
 312                         win_errstr(status)));
 313                 talloc_free(mem_ctx);
 314                 return status;
 315         }
 316
 317         /*
 318          * We temporary replcate schema->prefixmap.
 319          */
 320         orig_pfm = schema->prefixmap;
 321         schema->prefixmap = pfm;
 322
 323         /* Update prefixMap in ldb*/
 324         status = dsdb_write_prefixes_from_schema_to_ldb(mem_ctx, ldb, schema);
 325         if (!W_ERROR_IS_OK(status)) {
 326                 DEBUG(0,("dsdb_create_prefix_mapping: dsdb_write_prefixes_to_ldb: %s\n",
 327                         win_errstr(status)));
 328                 talloc_free(mem_ctx);
 329                 return status;
 330         }
 331
 332         DEBUG(2,(__location__ " Added prefixMap %s - now have %u prefixes\n",
 333                  full_oid, schema->prefixmap->length));
 334
 335         /*
 336          * We restore the original prefix map.
 337          *
 338          * The next schema reload should get an updated prefix map!
 339          */
 340         schema->prefixmap = orig_pfm;
 341
 342         talloc_free(mem_ctx);
 343         return status;
 344 }
 345
 346
 347 WERROR dsdb_write_prefixes_from_schema_to_ldb(TALLOC_CTX *mem_ctx, struct ldb_context *ldb,
 348                                               const struct dsdb_schema *schema)
 349 {
 350         WERROR status;
 351         int ldb_ret;
 352         struct ldb_message *msg;
 353         struct ldb_dn *schema_dn;
 354         struct prefixMapBlob pfm_blob;
 355         struct ldb_val ndr_blob;
 356         enum ndr_err_code ndr_err;
 357         TALLOC_CTX *temp_ctx;
 358         struct drsuapi_DsReplicaOIDMapping_Ctr *ctr;
 359
 360         schema_dn = ldb_get_schema_basedn(ldb);
 361         if (!schema_dn) {
 362                 DEBUG(0,("dsdb_write_prefixes_from_schema_to_ldb: no schema dn present\n"));
 363                 return WERR_FOOBAR;
 364         }
 365
 366         temp_ctx = talloc_new(mem_ctx);
 367         W_ERROR_HAVE_NO_MEMORY(temp_ctx);
 368
 369         /* convert schema_prefixMap to prefixMap blob */
 370         status = dsdb_get_oid_mappings_drsuapi(schema, false, temp_ctx, &ctr);
 371         if (!W_ERROR_IS_OK(status)) {
 372                 talloc_free(temp_ctx);
 373                 return status;
 374         }
 375
 376         pfm_blob.version        = PREFIX_MAP_VERSION_DSDB;
 377         pfm_blob.ctr.dsdb       = *ctr;
 378
 379         ndr_err = ndr_push_struct_blob(&ndr_blob, temp_ctx,
 380                                        &pfm_blob,
 381                                        (ndr_push_flags_fn_t)ndr_push_prefixMapBlob);
 382         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 383                 talloc_free(temp_ctx);
 384                 return WERR_FOOBAR;
 385         }
 386
 387         /* write serialized prefixMap into LDB */
 388         msg = ldb_msg_new(temp_ctx);
 389         if (!msg) {
 390                 talloc_free(temp_ctx);
 391                 return WERR_NOT_ENOUGH_MEMORY;
 392         }
 393
 394         msg->dn = schema_dn;
 395         ldb_ret = ldb_msg_add_value(msg, "prefixMap", &ndr_blob, NULL);
 396         if (ldb_ret != 0) {
 397                 talloc_free(temp_ctx);
 398                 DEBUG(0,("dsdb_write_prefixes_from_schema_to_ldb: ldb_msg_add_value failed\n"));
 399                 return WERR_NOT_ENOUGH_MEMORY;
 400         }
 401
 402         ldb_ret = dsdb_replace(ldb, msg, DSDB_FLAG_AS_SYSTEM);
 403
 404         talloc_free(temp_ctx);
 405
 406         if (ldb_ret != 0) {
 407                 DEBUG(0,("dsdb_write_prefixes_from_schema_to_ldb: dsdb_replace failed\n"));
 408                 return WERR_FOOBAR;
 409         }
 410
 411         return WERR_OK;
 412 }
 413
 414 WERROR dsdb_read_prefixes_from_ldb(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, struct dsdb_schema_prefixmap **_pfm)
 415 {
 416         WERROR werr;
 417         int ldb_ret;
 418         const struct ldb_val *prefix_val;
 419         struct ldb_dn *schema_dn;
 420         struct ldb_result *schema_res = NULL;
 421         static const char *schema_attrs[] = {
 422                 "prefixMap",
 423                 NULL
 424         };
 425
 426         schema_dn = ldb_get_schema_basedn(ldb);
 427         if (!schema_dn) {
 428                 DEBUG(0,("dsdb_read_prefixes_from_ldb: no schema dn present\n"));
 429                 return WERR_FOOBAR;
 430         }
 431
 432         ldb_ret = ldb_search(ldb, mem_ctx, &schema_res, schema_dn, LDB_SCOPE_BASE, schema_attrs, NULL);
 433         if (ldb_ret == LDB_ERR_NO_SUCH_OBJECT) {
 434                 DEBUG(0,("dsdb_read_prefixes_from_ldb: no prefix map present\n"));
 435                 talloc_free(schema_res);
 436                 return WERR_FOOBAR;
 437         } else if (ldb_ret != LDB_SUCCESS) {
 438                 DEBUG(0,("dsdb_read_prefixes_from_ldb: failed to search the schema head\n"));
 439                 talloc_free(schema_res);
 440                 return WERR_FOOBAR;
 441         }
 442
 443         prefix_val = ldb_msg_find_ldb_val(schema_res->msgs[0], "prefixMap");
 444         if (!prefix_val) {
 445                 DEBUG(0,("dsdb_read_prefixes_from_ldb: no prefixMap attribute found\n"));
 446                 talloc_free(schema_res);
 447                 return WERR_FOOBAR;
 448         }
 449
 450         werr = _dsdb_prefixmap_from_ldb_val(prefix_val,
 451                                             mem_ctx,
 452                                             _pfm);
 453         talloc_free(schema_res);
 454         W_ERROR_NOT_OK_RETURN(werr);
 455
 456         return WERR_OK;
 457 }
 458
 459 /*
 460   this will be replaced with something that looks at the right part of
 461   the schema once we know where unique indexing information is hidden
 462  */
 463 static bool dsdb_schema_unique_attribute(const char *attr)
 464 {
 465         const char *attrs[] = { "objectGUID", NULL };
 466         unsigned int i;
 467         for (i=0;attrs[i];i++) {
 468                 if (ldb_attr_cmp(attr, attrs[i]) == 0) {
 469                         return true;
 470                 }
 471         }
 472         return false;
 473 }
 474
 475
 476 /*
 477   setup the ldb_schema_attribute field for a dsdb_attribute
 478  */
 479 static int dsdb_schema_setup_ldb_schema_attribute(struct ldb_context *ldb,
 480                                                   struct dsdb_attribute *attr)
 481 {
 482         const char *syntax = attr->syntax->ldb_syntax;
 483         const struct ldb_schema_syntax *s;
 484         struct ldb_schema_attribute *a;
 485
 486         if (!syntax) {
 487                 syntax = attr->syntax->ldap_oid;
 488         }
 489
 490         s = ldb_samba_syntax_by_lDAPDisplayName(ldb, attr->lDAPDisplayName);
 491         if (s == NULL) {
 492                 s = ldb_samba_syntax_by_name(ldb, syntax);
 493         }
 494         if (s == NULL) {
 495                 s = ldb_standard_syntax_by_name(ldb, syntax);
 496         }
 497
 498         if (s == NULL) {
 499                 return ldb_operr(ldb);
 500         }
 501
 502         attr->ldb_schema_attribute = a = talloc(attr, struct ldb_schema_attribute);
 503         if (attr->ldb_schema_attribute == NULL) {
 504                 return ldb_oom(ldb);
 505         }
 506
 507         a->name = attr->lDAPDisplayName;
 508         a->flags = 0;
 509         a->syntax = s;
 510
 511         if (dsdb_schema_unique_attribute(a->name)) {
 512                 a->flags |= LDB_ATTR_FLAG_UNIQUE_INDEX;
 513         }
 514         if (attr->isSingleValued) {
 515                 a->flags |= LDB_ATTR_FLAG_SINGLE_VALUE;
 516         }
 517
 518         /*
 519          * Is the attribute indexed? By treating confidential attributes as
 520          * unindexed, we force searches to go through the unindexed search path,
 521          * avoiding observable timing differences.
 522          */
 523         if (attr->searchFlags & SEARCH_FLAG_ATTINDEX &&
 524             !(attr->searchFlags & SEARCH_FLAG_CONFIDENTIAL))
 525         {
 526                 a->flags |= LDB_ATTR_FLAG_INDEXED;
 527         }
 528
 529
 530         return LDB_SUCCESS;
 531 }
 532
 533
 534 #define GET_STRING_LDB(msg, attr, mem_ctx, p, elem, strict) do { \
 535         const struct ldb_val *get_string_val = ldb_msg_find_ldb_val(msg, attr); \
 536         if (get_string_val == NULL) { \
 537                 if (strict) {                                     \
 538                         d_printf("%s: %s == NULL in %s\n", __location__, attr, ldb_dn_get_linearized(msg->dn)); \
 539                         return WERR_INVALID_PARAMETER;                  \
 540                 } else {                                                \
 541                         (p)->elem = NULL;                               \
 542                 }                                                       \
 543         } else {                                                        \
 544                 (p)->elem = talloc_strndup(mem_ctx,                     \
 545                                            (const char *)get_string_val->data, \
 546                                            get_string_val->length); \
 547                 if (!(p)->elem) {                                       \
 548                         d_printf("%s: talloc_strndup failed for %s\n", __location__, attr); \
 549                         return WERR_NOT_ENOUGH_MEMORY;                          \
 550                 }                                                       \
 551         }                                                               \
 552 } while (0)
 553
 554 #define GET_STRING_LIST_LDB(msg, attr, mem_ctx, p, elem) do {   \
 555         int get_string_list_counter;                                    \
 556         struct ldb_message_element *get_string_list_el = ldb_msg_find_element(msg, attr); \
 557         /* We may get empty attributes over the replication channel */  \
 558         if (get_string_list_el == NULL || get_string_list_el->num_values == 0) {                                \
 559                 (p)->elem = NULL;                                       \
 560                 break;                                                  \
 561         }                                                               \
 562         (p)->elem = talloc_array(mem_ctx, const char *, get_string_list_el->num_values + 1); \
 563         for (get_string_list_counter=0;                                 \
 564              get_string_list_counter < get_string_list_el->num_values;  \
 565              get_string_list_counter++) {                               \
 566                 (p)->elem[get_string_list_counter] = talloc_strndup((p)->elem, \
 567                                                                     (const char *)get_string_list_el->values[get_string_list_counter].data, \
 568                                                                     get_string_list_el->values[get_string_list_counter].length); \
 569                 if (!(p)->elem[get_string_list_counter]) {              \
 570                         d_printf("%s: talloc_strndup failed for %s\n", __location__, attr); \
 571                         return WERR_NOT_ENOUGH_MEMORY;                          \
 572                 }                                                       \
 573                 (p)->elem[get_string_list_counter+1] = NULL;            \
 574         }                                                               \
 575         talloc_steal(mem_ctx, (p)->elem);                               \
 576 } while (0)
 577
 578 #define GET_BOOL_LDB(msg, attr, p, elem, strict) do { \
 579         const char *str; \
 580         str = ldb_msg_find_attr_as_string(msg, attr, NULL);\
 581         if (str == NULL) { \
 582                 if (strict) { \
 583                         d_printf("%s: %s == NULL\n", __location__, attr); \
 584                         return WERR_INVALID_PARAMETER; \
 585                 } else { \
 586                         (p)->elem = false; \
 587                 } \
 588         } else if (strcasecmp("TRUE", str) == 0) { \
 589                 (p)->elem = true; \
 590         } else if (strcasecmp("FALSE", str) == 0) { \
 591                 (p)->elem = false; \
 592         } else { \
 593                 d_printf("%s: %s == %s\n", __location__, attr, str); \
 594                 return WERR_INVALID_PARAMETER; \
 595         } \
 596 } while (0)
 597
 598 #define GET_UINT32_LDB(msg, attr, p, elem) do { \
 599         (p)->elem = ldb_msg_find_attr_as_uint(msg, attr, 0);\
 600 } while (0)
 601
 602 #define GET_UINT32_PTR_LDB(msg, attr, mem_ctx, p, elem) do {            \
 603         uint64_t _v = ldb_msg_find_attr_as_uint64(msg, attr, UINT64_MAX);\
 604         if (_v == UINT64_MAX) { \
 605                 (p)->elem = NULL; \
 606         } else if (_v > UINT32_MAX) { \
 607                 d_printf("%s: %s == 0x%llX\n", __location__, \
 608                          attr, (unsigned long long)_v); \
 609                 return WERR_INVALID_PARAMETER; \
 610         } else { \
 611                 (p)->elem = talloc(mem_ctx, uint32_t); \
 612                 if (!(p)->elem) { \
 613                         d_printf("%s: talloc failed for %s\n", __location__, attr); \
 614                         return WERR_NOT_ENOUGH_MEMORY; \
 615                 } \
 616                 *(p)->elem = (uint32_t)_v; \
 617         } \
 618 } while (0)
 619
 620 #define GET_GUID_LDB(msg, attr, p, elem) do { \
 621         (p)->elem = samdb_result_guid(msg, attr);\
 622 } while (0)
 623
 624 #define GET_BLOB_LDB(msg, attr, mem_ctx, p, elem) do { \
 625         const struct ldb_val *_val;\
 626         _val = ldb_msg_find_ldb_val(msg, attr);\
 627         if (_val) {\
 628                 (p)->elem = *_val;\
 629                 talloc_steal(mem_ctx, (p)->elem.data);\
 630         } else {\
 631                 ZERO_STRUCT((p)->elem);\
 632         }\
 633 } while (0)
 634
 635 /** Create an dsdb_attribute out of ldb message, attr must be already talloced
 636  *
 637  * If supplied the attribute will be checked against the prefixmap to
 638  * ensure it can be mapped.  However we can't have this attribute
 639  * const as dsdb_schema_pfm_attid_from_oid calls
 640  * dsdb_schema_pfm_make_attid_impl() which may modify prefixmap in
 641  * other situations.
 642  */
 643
 644 WERROR dsdb_attribute_from_ldb(struct dsdb_schema_prefixmap *prefixmap,
 645                                struct ldb_message *msg,
 646                                struct dsdb_attribute *attr)
 647 {
 648         WERROR status;
 649         if (attr == NULL) {
 650                 DEBUG(0, ("%s: attr is null, it's expected not to be so\n", __location__));
 651                 return WERR_INVALID_PARAMETER;
 652         }
 653
 654         GET_STRING_LDB(msg, "cn", attr, attr, cn, false);
 655
 656         /*
 657          * This allows for the fact that the CN attribute is not
 658          * replicated over DRS, it is only replicated under the alias
 659          * 'name'.
 660          */
 661         if (attr->cn == NULL) {
 662                 GET_STRING_LDB(msg, "name", attr, attr, cn, true);
 663         }
 664
 665         GET_STRING_LDB(msg, "lDAPDisplayName", attr, attr, lDAPDisplayName, true);
 666         GET_STRING_LDB(msg, "attributeID", attr, attr, attributeID_oid, true);
 667         if (!prefixmap || prefixmap->length == 0) {
 668                 /* set an invalid value */
 669                 attr->attributeID_id = DRSUAPI_ATTID_INVALID;
 670         } else {
 671                 status = dsdb_schema_pfm_attid_from_oid(prefixmap,
 672                                                         attr->attributeID_oid,
 673                                                         &attr->attributeID_id);
 674                 if (!W_ERROR_IS_OK(status)) {
 675                         DEBUG(0,("%s: '%s': unable to map attributeID %s: %s\n",
 676                                 __location__, attr->lDAPDisplayName, attr->attributeID_oid,
 677                                 win_errstr(status)));
 678                         return status;
 679                 }
 680         }
 681         /* fetch msDS-IntId to be used in resolving ATTRTYP values */
 682         GET_UINT32_LDB(msg, "msDS-IntId", attr, msDS_IntId);
 683
 684         GET_GUID_LDB(msg, "schemaIDGUID", attr, schemaIDGUID);
 685         GET_UINT32_LDB(msg, "mAPIID", attr, mAPIID);
 686
 687         GET_GUID_LDB(msg, "attributeSecurityGUID", attr, attributeSecurityGUID);
 688
 689         GET_GUID_LDB(msg, "objectGUID", attr, objectGUID);
 690
 691         GET_UINT32_LDB(msg, "searchFlags", attr, searchFlags);
 692         GET_UINT32_LDB(msg, "systemFlags", attr, systemFlags);
 693         GET_BOOL_LDB(msg, "isMemberOfPartialAttributeSet", attr, isMemberOfPartialAttributeSet, false);
 694         GET_UINT32_LDB(msg, "linkID", attr, linkID);
 695
 696         GET_STRING_LDB(msg, "attributeSyntax", attr, attr, attributeSyntax_oid, true);
 697         if (!prefixmap || prefixmap->length == 0) {
 698                 /* set an invalid value */
 699                 attr->attributeSyntax_id = DRSUAPI_ATTID_INVALID;
 700         } else {
 701                 status = dsdb_schema_pfm_attid_from_oid(prefixmap,
 702                                                         attr->attributeSyntax_oid,
 703                                                         &attr->attributeSyntax_id);
 704                 if (!W_ERROR_IS_OK(status)) {
 705                         DEBUG(0,("%s: '%s': unable to map attributeSyntax_ %s: %s\n",
 706                                 __location__, attr->lDAPDisplayName, attr->attributeSyntax_oid,
 707                                 win_errstr(status)));
 708                         return status;
 709                 }
 710         }
 711         GET_UINT32_LDB(msg, "oMSyntax", attr, oMSyntax);
 712         GET_BLOB_LDB(msg, "oMObjectClass", attr, attr, oMObjectClass);
 713
 714         GET_BOOL_LDB(msg, "isSingleValued", attr, isSingleValued, true);
 715         GET_UINT32_PTR_LDB(msg, "rangeLower", attr, attr, rangeLower);
 716         GET_UINT32_PTR_LDB(msg, "rangeUpper", attr, attr, rangeUpper);
 717         GET_BOOL_LDB(msg, "extendedCharsAllowed", attr, extendedCharsAllowed, false);
 718
 719         GET_UINT32_LDB(msg, "schemaFlagsEx", attr, schemaFlagsEx);
 720         GET_BLOB_LDB(msg, "msDs-Schema-Extensions", attr, attr, msDs_Schema_Extensions);
 721
 722         GET_BOOL_LDB(msg, "showInAdvancedViewOnly", attr, showInAdvancedViewOnly, false);
 723         GET_STRING_LDB(msg, "adminDisplayName", attr, attr, adminDisplayName, false);
 724         GET_STRING_LDB(msg, "adminDescription", attr, attr, adminDescription, false);
 725         GET_STRING_LDB(msg, "classDisplayName", attr, attr, classDisplayName, false);
 726         GET_BOOL_LDB(msg, "isEphemeral", attr, isEphemeral, false);
 727         GET_BOOL_LDB(msg, "isDefunct", attr, isDefunct, false);
 728         GET_BOOL_LDB(msg, "systemOnly", attr, systemOnly, false);
 729
 730         return WERR_OK;
 731 }
 732
 733 WERROR dsdb_set_attribute_from_ldb_dups(struct ldb_context *ldb,
 734                                         struct dsdb_schema *schema,
 735                                         struct ldb_message *msg,
 736                                         bool checkdups)
 737 {
 738         WERROR status;
 739         struct dsdb_attribute *attr = talloc_zero(schema, struct dsdb_attribute);
 740         if (!attr) {
 741                 return WERR_NOT_ENOUGH_MEMORY;
 742         }
 743
 744         status = dsdb_attribute_from_ldb(schema->prefixmap, msg, attr);
 745         if (!W_ERROR_IS_OK(status)) {
 746                 return status;
 747         }
 748
 749         attr->syntax = dsdb_syntax_for_attribute(attr);
 750         if (!attr->syntax) {
 751                 DEBUG(0,(__location__ ": Unknown schema syntax for %s\n",
 752                          attr->lDAPDisplayName));
 753                 return WERR_DS_ATT_SCHEMA_REQ_SYNTAX;
 754         }
 755
 756         if (dsdb_schema_setup_ldb_schema_attribute(ldb, attr) != LDB_SUCCESS) {
 757                 DEBUG(0,(__location__ ": Unknown schema syntax for %s - ldb_syntax: %s, ldap_oid: %s\n",
 758                          attr->lDAPDisplayName,
 759                          attr->syntax->ldb_syntax,
 760                          attr->syntax->ldap_oid));
 761                 return WERR_DS_ATT_SCHEMA_REQ_SYNTAX;
 762         }
 763
 764         if (checkdups) {
 765                 const struct dsdb_attribute *a2;
 766                 struct dsdb_attribute **a;
 767                 uint32_t i;
 768
 769                 a2 = dsdb_attribute_by_attributeID_id(schema,
 770                                                       attr->attributeID_id);
 771                 if (a2 == NULL) {
 772                         goto done;
 773                 }
 774
 775                 i = schema->attributes_to_remove_size;
 776                 a = talloc_realloc(schema, schema->attributes_to_remove,
 777                                    struct dsdb_attribute *, i + 1);
 778                 if (a == NULL) {
 779                         return WERR_NOT_ENOUGH_MEMORY;
 780                 }
 781                 /* Mark the old attribute as to be removed */
 782                 a[i] = discard_const_p(struct dsdb_attribute, a2);
 783                 schema->attributes_to_remove = a;
 784                 schema->attributes_to_remove_size++;
 785         }
 786
 787 done:
 788         DLIST_ADD(schema->attributes, attr);
 789         return WERR_OK;
 790 }
 791
 792 WERROR dsdb_set_attribute_from_ldb(struct ldb_context *ldb,
 793                                    struct dsdb_schema *schema,
 794                                    struct ldb_message *msg)
 795 {
 796         return dsdb_set_attribute_from_ldb_dups(ldb, schema, msg, false);
 797 }
 798
 799 WERROR dsdb_set_class_from_ldb_dups(struct dsdb_schema *schema,
 800                                     struct ldb_message *msg,
 801                                     bool checkdups)
 802 {
 803         WERROR status;
 804         struct dsdb_class *obj = talloc_zero(schema, struct dsdb_class);
 805         if (!obj) {
 806                 return WERR_NOT_ENOUGH_MEMORY;
 807         }
 808         GET_STRING_LDB(msg, "cn", obj, obj, cn, false);
 809
 810         /*
 811          * This allows for the fact that the CN attribute is not
 812          * replicated over DRS, it is only replicated under the alias
 813          * 'name'.
 814          */
 815         if (obj->cn == NULL) {
 816                 GET_STRING_LDB(msg, "name", obj, obj, cn, true);
 817         }
 818
 819         GET_STRING_LDB(msg, "lDAPDisplayName", obj, obj, lDAPDisplayName, true);
 820         GET_STRING_LDB(msg, "governsID", obj, obj, governsID_oid, true);
 821         if (!schema->prefixmap || schema->prefixmap->length == 0) {
 822                 /* set an invalid value */
 823                 obj->governsID_id = DRSUAPI_ATTID_INVALID;
 824         } else {
 825                 status = dsdb_schema_pfm_attid_from_oid(schema->prefixmap,
 826                                                         obj->governsID_oid,
 827                                                         &obj->governsID_id);
 828                 if (!W_ERROR_IS_OK(status)) {
 829                         DEBUG(0,("%s: '%s': unable to map governsID %s: %s\n",
 830                                 __location__, obj->lDAPDisplayName, obj->governsID_oid,
 831                                 win_errstr(status)));
 832                         return status;
 833                 }
 834         }
 835         GET_GUID_LDB(msg, "schemaIDGUID", obj, schemaIDGUID);
 836         GET_GUID_LDB(msg, "objectGUID", obj, objectGUID);
 837
 838         GET_UINT32_LDB(msg, "objectClassCategory", obj, objectClassCategory);
 839         GET_STRING_LDB(msg, "rDNAttID", obj, obj, rDNAttID, false);
 840         GET_STRING_LDB(msg, "defaultObjectCategory", obj, obj, defaultObjectCategory, true);
 841
 842         GET_STRING_LDB(msg, "subClassOf", obj, obj, subClassOf, true);
 843
 844         GET_STRING_LIST_LDB(msg, "systemAuxiliaryClass", obj, obj, systemAuxiliaryClass);
 845         GET_STRING_LIST_LDB(msg, "auxiliaryClass", obj, obj, auxiliaryClass);
 846
 847         GET_STRING_LIST_LDB(msg, "systemMustContain", obj, obj, systemMustContain);
 848         GET_STRING_LIST_LDB(msg, "systemMayContain", obj, obj, systemMayContain);
 849         GET_STRING_LIST_LDB(msg, "mustContain", obj, obj, mustContain);
 850         GET_STRING_LIST_LDB(msg, "mayContain", obj, obj, mayContain);
 851
 852         GET_STRING_LIST_LDB(msg, "systemPossSuperiors", obj, obj, systemPossSuperiors);
 853         GET_STRING_LIST_LDB(msg, "possSuperiors", obj, obj, possSuperiors);
 854
 855         GET_STRING_LDB(msg, "defaultSecurityDescriptor", obj, obj, defaultSecurityDescriptor, false);
 856
 857         GET_UINT32_LDB(msg, "schemaFlagsEx", obj, schemaFlagsEx);
 858         GET_UINT32_LDB(msg, "systemFlags", obj, systemFlags);
 859         GET_BLOB_LDB(msg, "msDs-Schema-Extensions", obj, obj, msDs_Schema_Extensions);
 860
 861         GET_BOOL_LDB(msg, "showInAdvancedViewOnly", obj, showInAdvancedViewOnly, false);
 862         GET_STRING_LDB(msg, "adminDisplayName", obj, obj, adminDisplayName, false);
 863         GET_STRING_LDB(msg, "adminDescription", obj, obj, adminDescription, false);
 864         GET_STRING_LDB(msg, "classDisplayName", obj, obj, classDisplayName, false);
 865         GET_BOOL_LDB(msg, "defaultHidingValue", obj, defaultHidingValue, false);
 866         GET_BOOL_LDB(msg, "isDefunct", obj, isDefunct, false);
 867         GET_BOOL_LDB(msg, "systemOnly", obj, systemOnly, false);
 868
 869         if (checkdups) {
 870                 const struct dsdb_class *c2;
 871                 struct dsdb_class **c;
 872                 uint32_t i;
 873
 874                 c2 = dsdb_class_by_governsID_id(schema, obj->governsID_id);
 875                 if (c2 == NULL) {
 876                         goto done;
 877                 }
 878
 879                 i = schema->classes_to_remove_size;
 880                 c = talloc_realloc(schema, schema->classes_to_remove,
 881                                    struct dsdb_class *, i + 1);
 882                 if (c == NULL) {
 883                         return WERR_NOT_ENOUGH_MEMORY;
 884                 }
 885                 /* Mark the old class to be removed */
 886                 c[i] = discard_const_p(struct dsdb_class, c2);
 887                 schema->classes_to_remove = c;
 888                 schema->classes_to_remove_size++;
 889         }
 890
 891 done:
 892         DLIST_ADD(schema->classes, obj);
 893         return WERR_OK;
 894 }
 895
 896 WERROR dsdb_set_class_from_ldb(struct dsdb_schema *schema,
 897                                struct ldb_message *msg)
 898 {
 899         return dsdb_set_class_from_ldb_dups(schema, msg, false);
 900 }
 901
 902 #define dsdb_oom(error_string, mem_ctx) *error_string = talloc_asprintf(mem_ctx, "dsdb out of memory at %s:%d\n", __FILE__, __LINE__)
 903
 904 /*
 905  Fill a DSDB schema from the ldb results provided.  This is called
 906  directly when a schema must be created with a pre-initialised prefixMap
 907 */
 908
 909 int dsdb_load_ldb_results_into_schema(TALLOC_CTX *mem_ctx, struct ldb_context *ldb,
 910                                       struct dsdb_schema *schema,
 911                                       struct ldb_result *attrs_class_res,
 912                                       char **error_string)
 913 {
 914         unsigned int i;
 915         WERROR status;
 916
 917         schema->ts_last_change = 0;
 918         for (i=0; i < attrs_class_res->count; i++) {
 919                 const char *prefixMap = NULL;
 920                 /*
 921                  * attrs_class_res also includes the schema object;
 922                  * we only want to process classes & attributes
 923                  */
 924                 prefixMap = ldb_msg_find_attr_as_string(
 925                                 attrs_class_res->msgs[i],
 926                                 "prefixMap", NULL);
 927                 if (prefixMap != NULL) {
 928                         continue;
 929                 }
 930
 931                 status = dsdb_schema_set_el_from_ldb_msg(ldb, schema,
 932                                                          attrs_class_res->msgs[i]);
 933                 if (!W_ERROR_IS_OK(status)) {
 934                         *error_string = talloc_asprintf(mem_ctx,
 935                                       "dsdb_load_ldb_results_into_schema: failed to load attribute or class definition: %s:%s",
 936                                       ldb_dn_get_linearized(attrs_class_res->msgs[i]->dn),
 937                                       win_errstr(status));
 938                         DEBUG(0,(__location__ ": %s\n", *error_string));
 939                         return LDB_ERR_CONSTRAINT_VIOLATION;
 940                 }
 941         }
 942
 943         return LDB_SUCCESS;
 944 }
 945
 946 /*
 947  Create a DSDB schema from the ldb results provided.  This is called
 948  directly when the schema is provisioned from an on-disk LDIF file, or
 949  from dsdb_schema_from_schema_dn in schema_fsmo
 950 */
 951
 952 int dsdb_schema_from_ldb_results(TALLOC_CTX *mem_ctx, struct ldb_context *ldb,
 953                                  struct ldb_message *schema_msg,
 954                                  struct ldb_result *attrs_class_res,
 955                                  struct dsdb_schema **schema_out,
 956                                  char **error_string)
 957 {
 958         WERROR status;
 959         const struct ldb_val *prefix_val;
 960         const struct ldb_val *info_val;
 961         struct ldb_val info_val_default;
 962         struct dsdb_schema *schema;
 963         void *lp_opaque = ldb_get_opaque(ldb, "loadparm");
 964         int ret;
 965
 966         TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
 967         if (!tmp_ctx) {
 968                 dsdb_oom(error_string, mem_ctx);
 969                 return ldb_operr(ldb);
 970         }
 971
 972         schema = dsdb_new_schema(tmp_ctx);
 973         if (!schema) {
 974                 dsdb_oom(error_string, mem_ctx);
 975                 talloc_free(tmp_ctx);
 976                 return ldb_operr(ldb);
 977         }
 978
 979         if (lp_opaque) {
 980                 struct loadparm_context *lp_ctx = talloc_get_type_abort(lp_opaque, struct loadparm_context);
 981                 schema->fsmo.update_allowed = lpcfg_parm_bool(lp_ctx, NULL,
 982                                                               "dsdb", "schema update allowed",
 983                                                               false);
 984         }
 985
 986         prefix_val = ldb_msg_find_ldb_val(schema_msg, "prefixMap");
 987         if (!prefix_val) {
 988                 *error_string = talloc_asprintf(mem_ctx,
 989                                                 "schema_fsmo_init: no prefixMap attribute found");
 990                 DEBUG(0,(__location__ ": %s\n", *error_string));
 991                 talloc_free(tmp_ctx);
 992                 return LDB_ERR_CONSTRAINT_VIOLATION;
 993         }
 994         info_val = ldb_msg_find_ldb_val(schema_msg, "schemaInfo");
 995         if (!info_val) {
 996                 status = dsdb_schema_info_blob_new(mem_ctx, &info_val_default);
 997                 if (!W_ERROR_IS_OK(status)) {
 998                         *error_string = talloc_asprintf(mem_ctx,
 999                                                         "schema_fsmo_init: dsdb_schema_info_blob_new() failed - %s",
1000                                                         win_errstr(status));
1001                         DEBUG(0,(__location__ ": %s\n", *error_string));
1002                         talloc_free(tmp_ctx);
1003                         return ldb_operr(ldb);
1004                 }
1005                 info_val = &info_val_default;
1006         }
1007
1008         status = dsdb_load_oid_mappings_ldb(schema, prefix_val, info_val);
1009         if (!W_ERROR_IS_OK(status)) {
1010                 *error_string = talloc_asprintf(mem_ctx,
1011                               "schema_fsmo_init: failed to load oid mappings: %s",
1012                               win_errstr(status));
1013                 DEBUG(0,(__location__ ": %s\n", *error_string));
1014                 talloc_free(tmp_ctx);
1015                 return LDB_ERR_CONSTRAINT_VIOLATION;
1016         }
1017
1018         ret = dsdb_load_ldb_results_into_schema(mem_ctx, ldb, schema, attrs_class_res, error_string);
1019         if (ret != LDB_SUCCESS) {
1020                 talloc_free(tmp_ctx);
1021                 return ret;
1022         }
1023
1024         schema->fsmo.master_dn = ldb_msg_find_attr_as_dn(ldb, schema, schema_msg, "fSMORoleOwner");
1025         if (ldb_dn_compare(samdb_ntds_settings_dn(ldb, tmp_ctx), schema->fsmo.master_dn) == 0) {
1026                 schema->fsmo.we_are_master = true;
1027         } else {
1028                 schema->fsmo.we_are_master = false;
1029         }
1030
1031         DEBUG(5, ("schema_fsmo_init: we are master[%s] updates allowed[%s]\n",
1032                   (schema->fsmo.we_are_master?"yes":"no"),
1033                   (schema->fsmo.update_allowed?"yes":"no")));
1034
1035         *schema_out = talloc_steal(mem_ctx, schema);
1036         talloc_free(tmp_ctx);
1037         return LDB_SUCCESS;
1038 }