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