source4/dsdb/schema/schema_init.c

   1 /*
   2    Unix SMB/CIFS mplementation.
   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 "lib/ldb/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 "lib/ldb/include/ldb_module.h"
  33 #include "../lib/util/asn1.h"
  34
  35
  36 struct dsdb_schema *dsdb_new_schema(TALLOC_CTX *mem_ctx)
  37 {
  38         struct dsdb_schema *schema = talloc_zero(mem_ctx, struct dsdb_schema);
  39         if (!schema) {
  40                 return NULL;
  41         }
  42
  43         return schema;
  44 }
  45
  46
  47 WERROR dsdb_load_prefixmap_from_drsuapi(struct dsdb_schema *schema,
  48                                         const struct drsuapi_DsReplicaOIDMapping_Ctr *ctr)
  49 {
  50         WERROR werr;
  51         const char *schema_info;
  52         struct dsdb_schema_prefixmap *pfm;
  53
  54         werr = dsdb_schema_pfm_from_drsuapi_pfm(ctr, true, schema, &pfm, &schema_info);
  55         W_ERROR_NOT_OK_RETURN(werr);
  56
  57         /* set loaded prefixMap */
  58         talloc_free(schema->prefixmap);
  59         schema->prefixmap = pfm;
  60
  61         talloc_free(discard_const(schema->schema_info));
  62         schema->schema_info = schema_info;
  63
  64         return WERR_OK;
  65 }
  66
  67 static WERROR _dsdb_prefixmap_from_ldb_val(const struct ldb_val *pfm_ldb_val,
  68                                            TALLOC_CTX *mem_ctx,
  69                                            struct dsdb_schema_prefixmap **_pfm)
  70 {
  71         WERROR werr;
  72         enum ndr_err_code ndr_err;
  73         struct prefixMapBlob pfm_blob;
  74
  75         TALLOC_CTX *temp_ctx = talloc_new(mem_ctx);
  76         W_ERROR_HAVE_NO_MEMORY(temp_ctx);
  77
  78         ndr_err = ndr_pull_struct_blob(pfm_ldb_val, temp_ctx,
  79                                 &pfm_blob,
  80                                 (ndr_pull_flags_fn_t)ndr_pull_prefixMapBlob);
  81         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
  82                 NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
  83                 talloc_free(temp_ctx);
  84                 DEBUG(0,("_dsdb_prefixmap_from_ldb_val: Failed to parse prefixmap of length %u: %s\n",
  85                          (unsigned int)pfm_ldb_val->length, ndr_map_error2string(ndr_err)));
  86                 talloc_free(temp_ctx);
  87                 return ntstatus_to_werror(nt_status);
  88         }
  89
  90         if (pfm_blob.version != PREFIX_MAP_VERSION_DSDB) {
  91                 DEBUG(0,("_dsdb_prefixmap_from_ldb_val: pfm_blob->version %u incorrect\n", (unsigned int)pfm_blob.version));
  92                 talloc_free(temp_ctx);
  93                 return WERR_VERSION_PARSE_ERROR;
  94         }
  95
  96         /* call the drsuapi version */
  97         werr = dsdb_schema_pfm_from_drsuapi_pfm(&pfm_blob.ctr.dsdb, false, mem_ctx, _pfm, NULL);
  98         if (!W_ERROR_IS_OK(werr)) {
  99                 DEBUG(0, (__location__ " dsdb_schema_pfm_from_drsuapi_pfm failed: %s\n", win_errstr(werr)));
 100                 talloc_free(temp_ctx);
 101                 return werr;
 102         }
 103
 104         talloc_free(temp_ctx);
 105
 106         return werr;
 107 }
 108
 109 WERROR dsdb_load_oid_mappings_ldb(struct dsdb_schema *schema,
 110                                   const struct ldb_val *prefixMap,
 111                                   const struct ldb_val *schemaInfo)
 112 {
 113         WERROR werr;
 114         const char *schema_info;
 115         struct dsdb_schema_prefixmap *pfm;
 116         struct dsdb_schema_info *schi;
 117         TALLOC_CTX *mem_ctx;
 118
 119         mem_ctx = talloc_new(schema);
 120         W_ERROR_HAVE_NO_MEMORY(mem_ctx);
 121
 122         /* parse schemaInfo blob to verify it is valid */
 123         werr = dsdb_schema_info_from_blob(schemaInfo, mem_ctx, &schi);
 124         if (!W_ERROR_IS_OK(werr)) {
 125                 DEBUG(0, (__location__ " dsdb_schema_info_from_blob failed: %s\n", win_errstr(werr)));
 126                 talloc_free(mem_ctx);
 127                 return werr;
 128         }
 129
 130         /* fetch prefixMap */
 131         werr = _dsdb_prefixmap_from_ldb_val(prefixMap,
 132                                             mem_ctx, &pfm);
 133         if (!W_ERROR_IS_OK(werr)) {
 134                 DEBUG(0, (__location__ " _dsdb_prefixmap_from_ldb_val failed: %s\n", win_errstr(werr)));
 135                 talloc_free(mem_ctx);
 136                 return werr;
 137         }
 138
 139         /* decode schema_info */
 140         schema_info = hex_encode_talloc(mem_ctx,
 141                                         schemaInfo->data,
 142                                         schemaInfo->length);
 143         if (!schema_info) {
 144                 talloc_free(mem_ctx);
 145                 return WERR_NOMEM;
 146         }
 147
 148         /* store prefixMap and schema_info into cached Schema */
 149         talloc_free(schema->prefixmap);
 150         schema->prefixmap = talloc_steal(schema, pfm);
 151
 152         talloc_free(discard_const(schema->schema_info));
 153         schema->schema_info = talloc_steal(schema, schema_info);
 154
 155         /* clean up locally allocated mem */
 156         talloc_free(mem_ctx);
 157
 158         return WERR_OK;
 159 }
 160
 161 WERROR dsdb_get_oid_mappings_drsuapi(const struct dsdb_schema *schema,
 162                                      bool include_schema_info,
 163                                      TALLOC_CTX *mem_ctx,
 164                                      struct drsuapi_DsReplicaOIDMapping_Ctr **_ctr)
 165 {
 166         return dsdb_drsuapi_pfm_from_schema_pfm(schema->prefixmap,
 167                                                 include_schema_info ? schema->schema_info : NULL,
 168                                                 mem_ctx, _ctr);
 169 }
 170
 171 WERROR dsdb_get_drsuapi_prefixmap_as_blob(const struct drsuapi_DsReplicaOIDMapping_Ctr *ctr,
 172                                           TALLOC_CTX *mem_ctx,
 173                                           struct ldb_val *prefixMap)
 174 {
 175         struct prefixMapBlob pfm;
 176         enum ndr_err_code ndr_err;
 177         pfm.version     = PREFIX_MAP_VERSION_DSDB;
 178         pfm.reserved    = 0;
 179         pfm.ctr.dsdb    = *ctr;
 180
 181         ndr_err = ndr_push_struct_blob(prefixMap, mem_ctx, &pfm,
 182                                         (ndr_push_flags_fn_t)ndr_push_prefixMapBlob);
 183         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 184                 NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
 185                 return ntstatus_to_werror(nt_status);
 186         }
 187         return WERR_OK;
 188 }
 189
 190 WERROR dsdb_get_oid_mappings_ldb(const struct dsdb_schema *schema,
 191                                  TALLOC_CTX *mem_ctx,
 192                                  struct ldb_val *prefixMap,
 193                                  struct ldb_val *schemaInfo)
 194 {
 195         WERROR status;
 196         struct drsuapi_DsReplicaOIDMapping_Ctr *ctr;
 197
 198         status = dsdb_get_oid_mappings_drsuapi(schema, false, mem_ctx, &ctr);
 199         W_ERROR_NOT_OK_RETURN(status);
 200
 201         status = dsdb_get_drsuapi_prefixmap_as_blob(ctr, mem_ctx, prefixMap);
 202         talloc_free(ctr);
 203         W_ERROR_NOT_OK_RETURN(status);
 204
 205         *schemaInfo = strhex_to_data_blob(mem_ctx, schema->schema_info);
 206         W_ERROR_HAVE_NO_MEMORY(schemaInfo->data);
 207
 208         return WERR_OK;
 209 }
 210
 211
 212 /*
 213  * this function is called from within a ldb transaction from the schema_fsmo module
 214  */
 215 WERROR dsdb_create_prefix_mapping(struct ldb_context *ldb, struct dsdb_schema *schema, const char *full_oid)
 216 {
 217         WERROR status;
 218         uint32_t attid;
 219         TALLOC_CTX *mem_ctx;
 220         struct dsdb_schema_prefixmap *pfm;
 221
 222         mem_ctx = talloc_new(ldb);
 223         W_ERROR_HAVE_NO_MEMORY(mem_ctx);
 224
 225         /* Read prefixes from disk*/
 226         status = dsdb_read_prefixes_from_ldb(ldb, mem_ctx, &pfm);
 227         if (!W_ERROR_IS_OK(status)) {
 228                 DEBUG(0,("dsdb_create_prefix_mapping: dsdb_read_prefixes_from_ldb: %s\n",
 229                         win_errstr(status)));
 230                 talloc_free(mem_ctx);
 231                 return status;
 232         }
 233
 234         /* Check if there is a prefix for the oid in the prefixes array*/
 235         status = dsdb_schema_pfm_find_oid(pfm, full_oid, NULL);
 236         if (W_ERROR_IS_OK(status)) {
 237                 /* prefix found*/
 238                 talloc_free(mem_ctx);
 239                 return status;
 240         } else if (!W_ERROR_EQUAL(WERR_DS_NO_MSDS_INTID, status)) {
 241                 /* error */
 242                 DEBUG(0,("dsdb_create_prefix_mapping: dsdb_find_prefix_for_oid: %s\n",
 243                         win_errstr(status)));
 244                 talloc_free(mem_ctx);
 245                 return status;
 246         }
 247
 248         /* Create the new mapping for the prefix of full_oid */
 249         status = dsdb_schema_pfm_make_attid(pfm, full_oid, &attid);
 250         if (!W_ERROR_IS_OK(status)) {
 251                 DEBUG(0,("dsdb_create_prefix_mapping: dsdb_schema_pfm_make_attid: %s\n",
 252                         win_errstr(status)));
 253                 talloc_free(mem_ctx);
 254                 return status;
 255         }
 256
 257         talloc_unlink(schema, schema->prefixmap);
 258         schema->prefixmap = talloc_steal(schema, pfm);
 259
 260         /* Update prefixMap in ldb*/
 261         status = dsdb_write_prefixes_from_schema_to_ldb(mem_ctx, ldb, schema);
 262         if (!W_ERROR_IS_OK(status)) {
 263                 DEBUG(0,("dsdb_create_prefix_mapping: dsdb_write_prefixes_to_ldb: %s\n",
 264                         win_errstr(status)));
 265                 talloc_free(mem_ctx);
 266                 return status;
 267         }
 268
 269         DEBUG(2,(__location__ " Added prefixMap %s - now have %u prefixes\n",
 270                  full_oid, schema->prefixmap->length));
 271
 272         talloc_free(mem_ctx);
 273         return status;
 274 }
 275
 276
 277 WERROR dsdb_write_prefixes_from_schema_to_ldb(TALLOC_CTX *mem_ctx, struct ldb_context *ldb,
 278                                               const struct dsdb_schema *schema)
 279 {
 280         WERROR status;
 281         int ldb_ret;
 282         struct ldb_message *msg;
 283         struct ldb_dn *schema_dn;
 284         struct prefixMapBlob pfm_blob;
 285         struct ldb_val ndr_blob;
 286         enum ndr_err_code ndr_err;
 287         TALLOC_CTX *temp_ctx;
 288         struct drsuapi_DsReplicaOIDMapping_Ctr *ctr;
 289
 290         schema_dn = ldb_get_schema_basedn(ldb);
 291         if (!schema_dn) {
 292                 DEBUG(0,("dsdb_write_prefixes_from_schema_to_ldb: no schema dn present\n"));
 293                 return WERR_FOOBAR;
 294         }
 295
 296         temp_ctx = talloc_new(mem_ctx);
 297         W_ERROR_HAVE_NO_MEMORY(temp_ctx);
 298
 299         /* convert schema_prefixMap to prefixMap blob */
 300         status = dsdb_get_oid_mappings_drsuapi(schema, false, temp_ctx, &ctr);
 301         if (!W_ERROR_IS_OK(status)) {
 302                 talloc_free(temp_ctx);
 303                 return status;
 304         }
 305
 306         pfm_blob.version        = PREFIX_MAP_VERSION_DSDB;
 307         pfm_blob.ctr.dsdb       = *ctr;
 308
 309         ndr_err = ndr_push_struct_blob(&ndr_blob, temp_ctx,
 310                                        &pfm_blob,
 311                                        (ndr_push_flags_fn_t)ndr_push_prefixMapBlob);
 312         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 313                 talloc_free(temp_ctx);
 314                 return WERR_FOOBAR;
 315         }
 316
 317         /* write serialized prefixMap into LDB */
 318         msg = ldb_msg_new(temp_ctx);
 319         if (!msg) {
 320                 talloc_free(temp_ctx);
 321                 return WERR_NOMEM;
 322         }
 323
 324         msg->dn = schema_dn;
 325         ldb_ret = ldb_msg_add_value(msg, "prefixMap", &ndr_blob, NULL);
 326         if (ldb_ret != 0) {
 327                 talloc_free(temp_ctx);
 328                 DEBUG(0,("dsdb_write_prefixes_from_schema_to_ldb: ldb_msg_add_value failed\n"));
 329                 return WERR_NOMEM;
 330         }
 331
 332         ldb_ret = dsdb_replace(ldb, msg, DSDB_FLAG_AS_SYSTEM);
 333
 334         talloc_free(temp_ctx);
 335
 336         if (ldb_ret != 0) {
 337                 DEBUG(0,("dsdb_write_prefixes_from_schema_to_ldb: dsdb_replace failed\n"));
 338                 return WERR_FOOBAR;
 339         }
 340
 341         return WERR_OK;
 342 }
 343
 344 WERROR dsdb_read_prefixes_from_ldb(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, struct dsdb_schema_prefixmap **_pfm)
 345 {
 346         WERROR werr;
 347         int ldb_ret;
 348         const struct ldb_val *prefix_val;
 349         struct ldb_dn *schema_dn;
 350         struct ldb_result *schema_res = NULL;
 351         static const char *schema_attrs[] = {
 352                 "prefixMap",
 353                 NULL
 354         };
 355
 356         schema_dn = ldb_get_schema_basedn(ldb);
 357         if (!schema_dn) {
 358                 DEBUG(0,("dsdb_read_prefixes_from_ldb: no schema dn present\n"));
 359                 return WERR_FOOBAR;
 360         }
 361
 362         ldb_ret = ldb_search(ldb, mem_ctx, &schema_res, schema_dn, LDB_SCOPE_BASE, schema_attrs, NULL);
 363         if (ldb_ret == LDB_ERR_NO_SUCH_OBJECT) {
 364                 DEBUG(0,("dsdb_read_prefixes_from_ldb: no prefix map present\n"));
 365                 talloc_free(schema_res);
 366                 return WERR_FOOBAR;
 367         } else if (ldb_ret != LDB_SUCCESS) {
 368                 DEBUG(0,("dsdb_read_prefixes_from_ldb: failed to search the schema head\n"));
 369                 talloc_free(schema_res);
 370                 return WERR_FOOBAR;
 371         }
 372
 373         prefix_val = ldb_msg_find_ldb_val(schema_res->msgs[0], "prefixMap");
 374         if (!prefix_val) {
 375                 DEBUG(0,("dsdb_read_prefixes_from_ldb: no prefixMap attribute found\n"));
 376                 talloc_free(schema_res);
 377                 return WERR_FOOBAR;
 378         }
 379
 380         werr = _dsdb_prefixmap_from_ldb_val(prefix_val,
 381                                             mem_ctx,
 382                                             _pfm);
 383         talloc_free(schema_res);
 384         W_ERROR_NOT_OK_RETURN(werr);
 385
 386         return WERR_OK;
 387 }
 388
 389 /*
 390   this will be replaced with something that looks at the right part of
 391   the schema once we know where unique indexing information is hidden
 392  */
 393 static bool dsdb_schema_unique_attribute(const char *attr)
 394 {
 395         const char *attrs[] = { "objectGUID", "objectSID" , NULL };
 396         unsigned int i;
 397         for (i=0;attrs[i];i++) {
 398                 if (strcasecmp(attr, attrs[i]) == 0) {
 399                         return true;
 400                 }
 401         }
 402         return false;
 403 }
 404
 405
 406 /*
 407   setup the ldb_schema_attribute field for a dsdb_attribute
 408  */
 409 static int dsdb_schema_setup_ldb_schema_attribute(struct ldb_context *ldb,
 410                                                   struct dsdb_attribute *attr)
 411 {
 412         const char *syntax = attr->syntax->ldb_syntax;
 413         const struct ldb_schema_syntax *s;
 414         struct ldb_schema_attribute *a;
 415
 416         if (!syntax) {
 417                 syntax = attr->syntax->ldap_oid;
 418         }
 419
 420         s = ldb_samba_syntax_by_lDAPDisplayName(ldb, attr->lDAPDisplayName);
 421         if (s == NULL) {
 422                 s = ldb_samba_syntax_by_name(ldb, syntax);
 423         }
 424         if (s == NULL) {
 425                 s = ldb_standard_syntax_by_name(ldb, syntax);
 426         }
 427
 428         if (s == NULL) {
 429                 return LDB_ERR_OPERATIONS_ERROR;
 430         }
 431
 432         attr->ldb_schema_attribute = a = talloc(attr, struct ldb_schema_attribute);
 433         if (attr->ldb_schema_attribute == NULL) {
 434                 ldb_oom(ldb);
 435                 return LDB_ERR_OPERATIONS_ERROR;
 436         }
 437
 438         a->name = attr->lDAPDisplayName;
 439         a->flags = 0;
 440         a->syntax = s;
 441
 442         if (dsdb_schema_unique_attribute(a->name)) {
 443                 a->flags |= LDB_ATTR_FLAG_UNIQUE_INDEX;
 444         }
 445         if (attr->isSingleValued) {
 446                 a->flags |= LDB_ATTR_FLAG_SINGLE_VALUE;
 447         }
 448
 449
 450         return LDB_SUCCESS;
 451 }
 452
 453
 454 #define GET_STRING_LDB(msg, attr, mem_ctx, p, elem, strict) do { \
 455         const struct ldb_val *get_string_val = ldb_msg_find_ldb_val(msg, attr); \
 456         if (get_string_val == NULL) { \
 457                 if (strict) {                                     \
 458                         d_printf("%s: %s == NULL\n", __location__, attr); \
 459                         return WERR_INVALID_PARAM;                      \
 460                 } else {                                                \
 461                         (p)->elem = NULL;                               \
 462                 }                                                       \
 463         } else {                                                        \
 464                 (p)->elem = talloc_strndup(mem_ctx,                     \
 465                                            (const char *)get_string_val->data, \
 466                                            get_string_val->length); \
 467                 if (!(p)->elem) {                                       \
 468                         d_printf("%s: talloc_strndup failed for %s\n", __location__, attr); \
 469                         return WERR_NOMEM;                              \
 470                 }                                                       \
 471         }                                                               \
 472 } while (0)
 473
 474 #define GET_STRING_LIST_LDB(msg, attr, mem_ctx, p, elem, strict) do {   \
 475         int get_string_list_counter;                                    \
 476         struct ldb_message_element *get_string_list_el = ldb_msg_find_element(msg, attr); \
 477         if (get_string_list_el == NULL) {                               \
 478                 if (strict) {                                           \
 479                         d_printf("%s: %s == NULL\n", __location__, attr); \
 480                         return WERR_INVALID_PARAM;                      \
 481                 } else {                                                \
 482                         (p)->elem = NULL;                               \
 483                         break;                                          \
 484                 }                                                       \
 485         }                                                               \
 486         (p)->elem = talloc_array(mem_ctx, const char *, get_string_list_el->num_values + 1); \
 487         for (get_string_list_counter=0;                                 \
 488              get_string_list_counter < get_string_list_el->num_values;  \
 489              get_string_list_counter++) {                               \
 490                 (p)->elem[get_string_list_counter] = talloc_strndup((p)->elem, \
 491                                                                     (const char *)get_string_list_el->values[get_string_list_counter].data, \
 492                                                                     get_string_list_el->values[get_string_list_counter].length); \
 493                 if (!(p)->elem[get_string_list_counter]) {              \
 494                         d_printf("%s: talloc_strndup failed for %s\n", __location__, attr); \
 495                         return WERR_NOMEM;                              \
 496                 }                                                       \
 497                 (p)->elem[get_string_list_counter+1] = NULL;            \
 498         }                                                               \
 499         talloc_steal(mem_ctx, (p)->elem);                               \
 500 } while (0)
 501
 502 #define GET_BOOL_LDB(msg, attr, p, elem, strict) do { \
 503         const char *str; \
 504         str = samdb_result_string(msg, attr, NULL);\
 505         if (str == NULL) { \
 506                 if (strict) { \
 507                         d_printf("%s: %s == NULL\n", __location__, attr); \
 508                         return WERR_INVALID_PARAM; \
 509                 } else { \
 510                         (p)->elem = false; \
 511                 } \
 512         } else if (strcasecmp("TRUE", str) == 0) { \
 513                 (p)->elem = true; \
 514         } else if (strcasecmp("FALSE", str) == 0) { \
 515                 (p)->elem = false; \
 516         } else { \
 517                 d_printf("%s: %s == %s\n", __location__, attr, str); \
 518                 return WERR_INVALID_PARAM; \
 519         } \
 520 } while (0)
 521
 522 #define GET_UINT32_LDB(msg, attr, p, elem) do { \
 523         (p)->elem = samdb_result_uint(msg, attr, 0);\
 524 } while (0)
 525
 526 #define GET_UINT32_PTR_LDB(msg, attr, mem_ctx, p, elem) do {            \
 527         uint64_t _v = samdb_result_uint64(msg, attr, UINT64_MAX);\
 528         if (_v == UINT64_MAX) { \
 529                 (p)->elem = NULL; \
 530         } else if (_v > UINT32_MAX) { \
 531                 d_printf("%s: %s == 0x%llX\n", __location__, \
 532                          attr, (unsigned long long)_v); \
 533                 return WERR_INVALID_PARAM; \
 534         } else { \
 535                 (p)->elem = talloc(mem_ctx, uint32_t); \
 536                 if (!(p)->elem) { \
 537                         d_printf("%s: talloc failed for %s\n", __location__, attr); \
 538                         return WERR_NOMEM; \
 539                 } \
 540                 *(p)->elem = (uint32_t)_v; \
 541         } \
 542 } while (0)
 543
 544 #define GET_GUID_LDB(msg, attr, p, elem) do { \
 545         (p)->elem = samdb_result_guid(msg, attr);\
 546 } while (0)
 547
 548 #define GET_BLOB_LDB(msg, attr, mem_ctx, p, elem) do { \
 549         const struct ldb_val *_val;\
 550         _val = ldb_msg_find_ldb_val(msg, attr);\
 551         if (_val) {\
 552                 (p)->elem = *_val;\
 553                 talloc_steal(mem_ctx, (p)->elem.data);\
 554         } else {\
 555                 ZERO_STRUCT((p)->elem);\
 556         }\
 557 } while (0)
 558
 559 WERROR dsdb_attribute_from_ldb(struct ldb_context *ldb,
 560                                struct dsdb_schema *schema,
 561                                struct ldb_message *msg)
 562 {
 563         WERROR status;
 564         struct dsdb_attribute *attr = talloc_zero(schema, struct dsdb_attribute);
 565         if (!attr) {
 566                 return WERR_NOMEM;
 567         }
 568
 569         GET_STRING_LDB(msg, "cn", attr, attr, cn, false);
 570         GET_STRING_LDB(msg, "lDAPDisplayName", attr, attr, lDAPDisplayName, true);
 571         GET_STRING_LDB(msg, "attributeID", attr, attr, attributeID_oid, true);
 572         if (!schema->prefixmap || schema->prefixmap->length == 0) {
 573                 /* set an invalid value */
 574                 attr->attributeID_id = 0xFFFFFFFF;
 575         } else {
 576                 status = dsdb_schema_pfm_make_attid(schema->prefixmap,
 577                                                     attr->attributeID_oid,
 578                                                     &attr->attributeID_id);
 579                 if (!W_ERROR_IS_OK(status)) {
 580                         DEBUG(0,("%s: '%s': unable to map attributeID %s: %s\n",
 581                                 __location__, attr->lDAPDisplayName, attr->attributeID_oid,
 582                                 win_errstr(status)));
 583                         return status;
 584                 }
 585         }
 586         /* fetch msDS-IntId to be used in resolving ATTRTYP values */
 587         GET_UINT32_LDB(msg, "msDS-IntId", attr, msDS_IntId);
 588
 589         GET_GUID_LDB(msg, "schemaIDGUID", attr, schemaIDGUID);
 590         GET_UINT32_LDB(msg, "mAPIID", attr, mAPIID);
 591
 592         GET_GUID_LDB(msg, "attributeSecurityGUID", attr, attributeSecurityGUID);
 593
 594         GET_GUID_LDB(msg, "objectGUID", attr, objectGUID);
 595
 596         GET_UINT32_LDB(msg, "searchFlags", attr, searchFlags);
 597         GET_UINT32_LDB(msg, "systemFlags", attr, systemFlags);
 598         GET_BOOL_LDB(msg, "isMemberOfPartialAttributeSet", attr, isMemberOfPartialAttributeSet, false);
 599         GET_UINT32_LDB(msg, "linkID", attr, linkID);
 600
 601         GET_STRING_LDB(msg, "attributeSyntax", attr, attr, attributeSyntax_oid, true);
 602         if (!schema->prefixmap || schema->prefixmap->length == 0) {
 603                 /* set an invalid value */
 604                 attr->attributeSyntax_id = 0xFFFFFFFF;
 605         } else {
 606                 status = dsdb_schema_pfm_make_attid(schema->prefixmap,
 607                                                     attr->attributeSyntax_oid,
 608                                                     &attr->attributeSyntax_id);
 609                 if (!W_ERROR_IS_OK(status)) {
 610                         DEBUG(0,("%s: '%s': unable to map attributeSyntax_ %s: %s\n",
 611                                 __location__, attr->lDAPDisplayName, attr->attributeSyntax_oid,
 612                                 win_errstr(status)));
 613                         return status;
 614                 }
 615         }
 616         GET_UINT32_LDB(msg, "oMSyntax", attr, oMSyntax);
 617         GET_BLOB_LDB(msg, "oMObjectClass", attr, attr, oMObjectClass);
 618
 619         GET_BOOL_LDB(msg, "isSingleValued", attr, isSingleValued, true);
 620         GET_UINT32_PTR_LDB(msg, "rangeLower", attr, attr, rangeLower);
 621         GET_UINT32_PTR_LDB(msg, "rangeUpper", attr, attr, rangeUpper);
 622         GET_BOOL_LDB(msg, "extendedCharsAllowed", attr, extendedCharsAllowed, false);
 623
 624         GET_UINT32_LDB(msg, "schemaFlagsEx", attr, schemaFlagsEx);
 625         GET_BLOB_LDB(msg, "msDs-Schema-Extensions", attr, attr, msDs_Schema_Extensions);
 626
 627         GET_BOOL_LDB(msg, "showInAdvancedViewOnly", attr, showInAdvancedViewOnly, false);
 628         GET_STRING_LDB(msg, "adminDisplayName", attr, attr, adminDisplayName, false);
 629         GET_STRING_LDB(msg, "adminDescription", attr, attr, adminDescription, false);
 630         GET_STRING_LDB(msg, "classDisplayName", attr, attr, classDisplayName, false);
 631         GET_BOOL_LDB(msg, "isEphemeral", attr, isEphemeral, false);
 632         GET_BOOL_LDB(msg, "isDefunct", attr, isDefunct, false);
 633         GET_BOOL_LDB(msg, "systemOnly", attr, systemOnly, false);
 634
 635         attr->syntax = dsdb_syntax_for_attribute(attr);
 636         if (!attr->syntax) {
 637                 DEBUG(0,(__location__ ": Unknown schema syntax for %s\n",
 638                          attr->lDAPDisplayName));
 639                 return WERR_DS_ATT_SCHEMA_REQ_SYNTAX;
 640         }
 641
 642         if (dsdb_schema_setup_ldb_schema_attribute(ldb, attr) != LDB_SUCCESS) {
 643                 DEBUG(0,(__location__ ": Unknown schema syntax for %s\n",
 644                          attr->lDAPDisplayName));
 645                 return WERR_DS_ATT_SCHEMA_REQ_SYNTAX;
 646         }
 647
 648         DLIST_ADD(schema->attributes, attr);
 649         return WERR_OK;
 650 }
 651
 652 WERROR dsdb_class_from_ldb(struct dsdb_schema *schema,
 653                            struct ldb_message *msg)
 654 {
 655         WERROR status;
 656         struct dsdb_class *obj = talloc_zero(schema, struct dsdb_class);
 657         if (!obj) {
 658                 return WERR_NOMEM;
 659         }
 660         GET_STRING_LDB(msg, "cn", obj, obj, cn, false);
 661         GET_STRING_LDB(msg, "lDAPDisplayName", obj, obj, lDAPDisplayName, true);
 662         GET_STRING_LDB(msg, "governsID", obj, obj, governsID_oid, true);
 663         if (!schema->prefixmap || schema->prefixmap->length == 0) {
 664                 /* set an invalid value */
 665                 obj->governsID_id = 0xFFFFFFFF;
 666         } else {
 667                 status = dsdb_schema_pfm_make_attid(schema->prefixmap,
 668                                                     obj->governsID_oid,
 669                                                     &obj->governsID_id);
 670                 if (!W_ERROR_IS_OK(status)) {
 671                         DEBUG(0,("%s: '%s': unable to map governsID %s: %s\n",
 672                                 __location__, obj->lDAPDisplayName, obj->governsID_oid,
 673                                 win_errstr(status)));
 674                         return status;
 675                 }
 676         }
 677         GET_GUID_LDB(msg, "schemaIDGUID", obj, schemaIDGUID);
 678         GET_GUID_LDB(msg, "objectGUID", obj, objectGUID);
 679
 680         GET_UINT32_LDB(msg, "objectClassCategory", obj, objectClassCategory);
 681         GET_STRING_LDB(msg, "rDNAttID", obj, obj, rDNAttID, false);
 682         GET_STRING_LDB(msg, "defaultObjectCategory", obj, obj, defaultObjectCategory, true);
 683
 684         GET_STRING_LDB(msg, "subClassOf", obj, obj, subClassOf, true);
 685
 686         GET_STRING_LIST_LDB(msg, "systemAuxiliaryClass", obj, obj, systemAuxiliaryClass, false);
 687         GET_STRING_LIST_LDB(msg, "auxiliaryClass", obj, obj, auxiliaryClass, false);
 688
 689         GET_STRING_LIST_LDB(msg, "systemMustContain", obj, obj, systemMustContain, false);
 690         GET_STRING_LIST_LDB(msg, "systemMayContain", obj, obj, systemMayContain, false);
 691         GET_STRING_LIST_LDB(msg, "mustContain", obj, obj, mustContain, false);
 692         GET_STRING_LIST_LDB(msg, "mayContain", obj, obj, mayContain, false);
 693
 694         GET_STRING_LIST_LDB(msg, "systemPossSuperiors", obj, obj, systemPossSuperiors, false);
 695         GET_STRING_LIST_LDB(msg, "possSuperiors", obj, obj, possSuperiors, false);
 696
 697         GET_STRING_LDB(msg, "defaultSecurityDescriptor", obj, obj, defaultSecurityDescriptor, false);
 698
 699         GET_UINT32_LDB(msg, "schemaFlagsEx", obj, schemaFlagsEx);
 700         GET_BLOB_LDB(msg, "msDs-Schema-Extensions", obj, obj, msDs_Schema_Extensions);
 701
 702         GET_BOOL_LDB(msg, "showInAdvancedViewOnly", obj, showInAdvancedViewOnly, false);
 703         GET_STRING_LDB(msg, "adminDisplayName", obj, obj, adminDisplayName, false);
 704         GET_STRING_LDB(msg, "adminDescription", obj, obj, adminDescription, false);
 705         GET_STRING_LDB(msg, "classDisplayName", obj, obj, classDisplayName, false);
 706         GET_BOOL_LDB(msg, "defaultHidingValue", obj, defaultHidingValue, false);
 707         GET_BOOL_LDB(msg, "isDefunct", obj, isDefunct, false);
 708         GET_BOOL_LDB(msg, "systemOnly", obj, systemOnly, false);
 709
 710         DLIST_ADD(schema->classes, obj);
 711         return WERR_OK;
 712 }
 713
 714 #define dsdb_oom(error_string, mem_ctx) *error_string = talloc_asprintf(mem_ctx, "dsdb out of memory at %s:%d\n", __FILE__, __LINE__)
 715
 716 /*
 717  Create a DSDB schema from the ldb results provided.  This is called
 718  directly when the schema is provisioned from an on-disk LDIF file, or
 719  from dsdb_schema_from_schema_dn in schema_fsmo
 720 */
 721
 722 int dsdb_schema_from_ldb_results(TALLOC_CTX *mem_ctx, struct ldb_context *ldb,
 723                                  struct ldb_result *schema_res,
 724                                  struct ldb_result *attrs_res, struct ldb_result *objectclass_res,
 725                                  struct dsdb_schema **schema_out,
 726                                  char **error_string)
 727 {
 728         WERROR status;
 729         unsigned int i;
 730         const struct ldb_val *prefix_val;
 731         const struct ldb_val *info_val;
 732         struct ldb_val info_val_default;
 733         struct dsdb_schema *schema;
 734
 735         schema = dsdb_new_schema(mem_ctx);
 736         if (!schema) {
 737                 dsdb_oom(error_string, mem_ctx);
 738                 return LDB_ERR_OPERATIONS_ERROR;
 739         }
 740
 741         schema->base_dn = talloc_steal(schema, schema_res->msgs[0]->dn);
 742
 743         prefix_val = ldb_msg_find_ldb_val(schema_res->msgs[0], "prefixMap");
 744         if (!prefix_val) {
 745                 *error_string = talloc_asprintf(mem_ctx,
 746                                                 "schema_fsmo_init: no prefixMap attribute found");
 747                 DEBUG(0,(__location__ ": %s\n", *error_string));
 748                 return LDB_ERR_CONSTRAINT_VIOLATION;
 749         }
 750         info_val = ldb_msg_find_ldb_val(schema_res->msgs[0], "schemaInfo");
 751         if (!info_val) {
 752                 status = dsdb_schema_info_blob_new(mem_ctx, &info_val_default);
 753                 if (!W_ERROR_IS_OK(status)) {
 754                         *error_string = talloc_asprintf(mem_ctx,
 755                                                         "schema_fsmo_init: dsdb_schema_info_blob_new() failed - %s",
 756                                                         win_errstr(status));
 757                         DEBUG(0,(__location__ ": %s\n", *error_string));
 758                         return LDB_ERR_OPERATIONS_ERROR;
 759                 }
 760                 info_val = &info_val_default;
 761         }
 762
 763         status = dsdb_load_oid_mappings_ldb(schema, prefix_val, info_val);
 764         if (!W_ERROR_IS_OK(status)) {
 765                 *error_string = talloc_asprintf(mem_ctx,
 766                               "schema_fsmo_init: failed to load oid mappings: %s",
 767                               win_errstr(status));
 768                 DEBUG(0,(__location__ ": %s\n", *error_string));
 769                 return LDB_ERR_CONSTRAINT_VIOLATION;
 770         }
 771
 772         for (i=0; i < attrs_res->count; i++) {
 773                 status = dsdb_attribute_from_ldb(ldb, schema, attrs_res->msgs[i]);
 774                 if (!W_ERROR_IS_OK(status)) {
 775                         *error_string = talloc_asprintf(mem_ctx,
 776                                       "schema_fsmo_init: failed to load attribute definition: %s:%s",
 777                                       ldb_dn_get_linearized(attrs_res->msgs[i]->dn),
 778                                       win_errstr(status));
 779                         DEBUG(0,(__location__ ": %s\n", *error_string));
 780                         return LDB_ERR_CONSTRAINT_VIOLATION;
 781                 }
 782         }
 783
 784         for (i=0; i < objectclass_res->count; i++) {
 785                 status = dsdb_class_from_ldb(schema, objectclass_res->msgs[i]);
 786                 if (!W_ERROR_IS_OK(status)) {
 787                         *error_string = talloc_asprintf(mem_ctx,
 788                                       "schema_fsmo_init: failed to load class definition: %s:%s",
 789                                       ldb_dn_get_linearized(objectclass_res->msgs[i]->dn),
 790                                       win_errstr(status));
 791                         DEBUG(0,(__location__ ": %s\n", *error_string));
 792                         return LDB_ERR_CONSTRAINT_VIOLATION;
 793                 }
 794         }
 795
 796         schema->fsmo.master_dn = ldb_msg_find_attr_as_dn(ldb, schema, schema_res->msgs[0], "fSMORoleOwner");
 797         if (ldb_dn_compare(samdb_ntds_settings_dn(ldb), schema->fsmo.master_dn) == 0) {
 798                 schema->fsmo.we_are_master = true;
 799         } else {
 800                 schema->fsmo.we_are_master = false;
 801         }
 802
 803         DEBUG(5, ("schema_fsmo_init: we are master: %s\n",
 804                   (schema->fsmo.we_are_master?"yes":"no")));
 805
 806         *schema_out = schema;
 807         return LDB_SUCCESS;
 808 }