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