lib/ldb-samba/ldif_handlers.c

   1 /*
   2    ldb database library - ldif handlers for Samba
   3
   4    Copyright (C) Andrew Tridgell 2005
   5    Copyright (C) Andrew Bartlett 2006-2009
   6    Copyright (C) Matthias Dieter Wallnöfer 2009
   7      ** NOTE! The following LGPL license applies to the ldb
   8      ** library. This does NOT imply that all of Samba is released
   9      ** under the LGPL
  10
  11    This library is free software; you can redistribute it and/or
  12    modify it under the terms of the GNU Lesser General Public
  13    License as published by the Free Software Foundation; either
  14    version 3 of the License, or (at your option) any later version.
  15
  16    This library is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19    Lesser General Public License for more details.
  20
  21    You should have received a copy of the GNU Lesser General Public
  22    License along with this library; if not, see <http://www.gnu.org/licenses/>.
  23 */
  24
  25 #include "includes.h"
  26 #include <ldb.h>
  27 #include <ldb_module.h>
  28 #include "ldb_handlers.h"
  29 #include "dsdb/samdb/samdb.h"
  30 #include "librpc/gen_ndr/ndr_security.h"
  31 #include "librpc/gen_ndr/ndr_misc.h"
  32 #include "librpc/gen_ndr/ndr_drsblobs.h"
  33 #include "librpc/gen_ndr/ndr_dnsp.h"
  34 #include "librpc/ndr/libndr.h"
  35 #include "libcli/security/security.h"
  36 #include "param/param.h"
  37 #include "../lib/util/asn1.h"
  38
  39 /*
  40   use ndr_print_* to convert a NDR formatted blob to a ldif formatted blob
  41
  42   If mask_errors is true, then function succeeds but out data
  43   is set to "<Unable to decode binary data>" message
  44
  45   \return 0 on success; -1 on error
  46 */
  47 static int ldif_write_NDR(struct ldb_context *ldb, void *mem_ctx,
  48                           const struct ldb_val *in, struct ldb_val *out,
  49                           size_t struct_size,
  50                           ndr_pull_flags_fn_t pull_fn,
  51                           ndr_print_fn_t print_fn,
  52                           bool mask_errors)
  53 {
  54         uint8_t *p;
  55         enum ndr_err_code err;
  56         if (!(ldb_get_flags(ldb) & LDB_FLG_SHOW_BINARY)) {
  57                 return ldb_handler_copy(ldb, mem_ctx, in, out);
  58         }
  59         p = talloc_size(mem_ctx, struct_size);
  60         err = ndr_pull_struct_blob(in, mem_ctx,
  61                                    p, pull_fn);
  62         if (err != NDR_ERR_SUCCESS) {
  63                 /* fail in not in mask_error mode */
  64                 if (!mask_errors) {
  65                         return -1;
  66                 }
  67                 talloc_free(p);
  68                 out->data = (uint8_t *)talloc_strdup(mem_ctx, "<Unable to decode binary data>");
  69                 out->length = strlen((const char *)out->data);
  70                 return 0;
  71         }
  72         out->data = (uint8_t *)ndr_print_struct_string(mem_ctx, print_fn, "NDR", p);
  73         talloc_free(p);
  74         if (out->data == NULL) {
  75                 return ldb_handler_copy(ldb, mem_ctx, in, out);
  76         }
  77         out->length = strlen((char *)out->data);
  78         return 0;
  79 }
  80
  81 /*
  82   convert a ldif formatted objectSid to a NDR formatted blob
  83 */
  84 static int ldif_read_objectSid(struct ldb_context *ldb, void *mem_ctx,
  85                                const struct ldb_val *in, struct ldb_val *out)
  86 {
  87         enum ndr_err_code ndr_err;
  88         struct dom_sid *sid;
  89         sid = dom_sid_parse_length(mem_ctx, in);
  90         if (sid == NULL) {
  91                 return -1;
  92         }
  93         ndr_err = ndr_push_struct_blob(out, mem_ctx, sid,
  94                                        (ndr_push_flags_fn_t)ndr_push_dom_sid);
  95         talloc_free(sid);
  96         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
  97                 return -1;
  98         }
  99         return 0;
 100 }
 101
 102 /*
 103   convert a NDR formatted blob to a ldif formatted objectSid
 104 */
 105 int ldif_write_objectSid(struct ldb_context *ldb, void *mem_ctx,
 106                                 const struct ldb_val *in, struct ldb_val *out)
 107 {
 108         struct dom_sid *sid;
 109         enum ndr_err_code ndr_err;
 110
 111         sid = talloc(mem_ctx, struct dom_sid);
 112         if (sid == NULL) {
 113                 return -1;
 114         }
 115         ndr_err = ndr_pull_struct_blob_all(in, sid, sid,
 116                                            (ndr_pull_flags_fn_t)ndr_pull_dom_sid);
 117         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 118                 talloc_free(sid);
 119                 return -1;
 120         }
 121         *out = data_blob_string_const(dom_sid_string(mem_ctx, sid));
 122         talloc_free(sid);
 123         if (out->data == NULL) {
 124                 return -1;
 125         }
 126         return 0;
 127 }
 128
 129 bool ldif_comparision_objectSid_isString(const struct ldb_val *v)
 130 {
 131         if (v->length < 3) {
 132                 return false;
 133         }
 134
 135         if (strncmp("S-", (const char *)v->data, 2) != 0) return false;
 136
 137         return true;
 138 }
 139
 140 /*
 141   compare two objectSids
 142 */
 143 static int ldif_comparison_objectSid(struct ldb_context *ldb, void *mem_ctx,
 144                                     const struct ldb_val *v1, const struct ldb_val *v2)
 145 {
 146         if (ldif_comparision_objectSid_isString(v1) && ldif_comparision_objectSid_isString(v2)) {
 147                 return ldb_comparison_binary(ldb, mem_ctx, v1, v2);
 148         } else if (ldif_comparision_objectSid_isString(v1)
 149                    && !ldif_comparision_objectSid_isString(v2)) {
 150                 struct ldb_val v;
 151                 int ret;
 152                 if (ldif_read_objectSid(ldb, mem_ctx, v1, &v) != 0) {
 153                         /* Perhaps not a string after all */
 154                         return ldb_comparison_binary(ldb, mem_ctx, v1, v2);
 155                 }
 156                 ret = ldb_comparison_binary(ldb, mem_ctx, &v, v2);
 157                 talloc_free(v.data);
 158                 return ret;
 159         } else if (!ldif_comparision_objectSid_isString(v1)
 160                    && ldif_comparision_objectSid_isString(v2)) {
 161                 struct ldb_val v;
 162                 int ret;
 163                 if (ldif_read_objectSid(ldb, mem_ctx, v2, &v) != 0) {
 164                         /* Perhaps not a string after all */
 165                         return ldb_comparison_binary(ldb, mem_ctx, v1, v2);
 166                 }
 167                 ret = ldb_comparison_binary(ldb, mem_ctx, v1, &v);
 168                 talloc_free(v.data);
 169                 return ret;
 170         }
 171         return ldb_comparison_binary(ldb, mem_ctx, v1, v2);
 172 }
 173
 174 /*
 175   canonicalise a objectSid
 176 */
 177 static int ldif_canonicalise_objectSid(struct ldb_context *ldb, void *mem_ctx,
 178                                       const struct ldb_val *in, struct ldb_val *out)
 179 {
 180         if (ldif_comparision_objectSid_isString(in)) {
 181                 if (ldif_read_objectSid(ldb, mem_ctx, in, out) != 0) {
 182                         /* Perhaps not a string after all */
 183                         return ldb_handler_copy(ldb, mem_ctx, in, out);
 184                 }
 185                 return 0;
 186         }
 187         return ldb_handler_copy(ldb, mem_ctx, in, out);
 188 }
 189
 190 static int extended_dn_read_SID(struct ldb_context *ldb, void *mem_ctx,
 191                               const struct ldb_val *in, struct ldb_val *out)
 192 {
 193         struct dom_sid sid;
 194         enum ndr_err_code ndr_err;
 195         if (ldif_comparision_objectSid_isString(in)) {
 196                 if (ldif_read_objectSid(ldb, mem_ctx, in, out) == 0) {
 197                         return 0;
 198                 }
 199         }
 200
 201         /* Perhaps not a string after all */
 202         *out = data_blob_talloc(mem_ctx, NULL, in->length/2+1);
 203
 204         if (!out->data) {
 205                 return -1;
 206         }
 207
 208         (*out).length = strhex_to_str((char *)out->data, out->length,
 209                                      (const char *)in->data, in->length);
 210
 211         /* Check it looks like a SID */
 212         ndr_err = ndr_pull_struct_blob_all(out, mem_ctx, &sid,
 213                                            (ndr_pull_flags_fn_t)ndr_pull_dom_sid);
 214         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 215                 return -1;
 216         }
 217         return 0;
 218 }
 219
 220 /*
 221   convert a ldif formatted objectGUID to a NDR formatted blob
 222 */
 223 static int ldif_read_objectGUID(struct ldb_context *ldb, void *mem_ctx,
 224                                 const struct ldb_val *in, struct ldb_val *out)
 225 {
 226         struct GUID guid;
 227         NTSTATUS status;
 228
 229         status = GUID_from_data_blob(in, &guid);
 230         if (!NT_STATUS_IS_OK(status)) {
 231                 return -1;
 232         }
 233
 234         status = GUID_to_ndr_blob(&guid, mem_ctx, out);
 235         if (!NT_STATUS_IS_OK(status)) {
 236                 return -1;
 237         }
 238         return 0;
 239 }
 240
 241 /*
 242   convert a NDR formatted blob to a ldif formatted objectGUID
 243 */
 244 static int ldif_write_objectGUID(struct ldb_context *ldb, void *mem_ctx,
 245                                  const struct ldb_val *in, struct ldb_val *out)
 246 {
 247         struct GUID guid;
 248         NTSTATUS status;
 249
 250         status = GUID_from_ndr_blob(in, &guid);
 251         if (!NT_STATUS_IS_OK(status)) {
 252                 return -1;
 253         }
 254         out->data = (uint8_t *)GUID_string(mem_ctx, &guid);
 255         if (out->data == NULL) {
 256                 return -1;
 257         }
 258         out->length = strlen((const char *)out->data);
 259         return 0;
 260 }
 261
 262 static bool ldif_comparision_objectGUID_isString(const struct ldb_val *v)
 263 {
 264         if (v->length != 36 && v->length != 38) return false;
 265
 266         /* Might be a GUID string, can't be a binary GUID (fixed 16 bytes) */
 267         return true;
 268 }
 269
 270 static int extended_dn_read_GUID(struct ldb_context *ldb, void *mem_ctx,
 271                               const struct ldb_val *in, struct ldb_val *out)
 272 {
 273         struct GUID guid;
 274         NTSTATUS status;
 275
 276         if (in->length == 36 && ldif_read_objectGUID(ldb, mem_ctx, in, out) == 0) {
 277                 return 0;
 278         }
 279
 280         /* Try as 'hex' form */
 281         if (in->length != 32) {
 282                 return -1;
 283         }
 284
 285         *out = data_blob_talloc(mem_ctx, NULL, in->length/2+1);
 286
 287         if (!out->data) {
 288                 return -1;
 289         }
 290
 291         (*out).length = strhex_to_str((char *)out->data, out->length,
 292                                       (const char *)in->data, in->length);
 293
 294         /* Check it looks like a GUID */
 295         status = GUID_from_ndr_blob(out, &guid);
 296         if (!NT_STATUS_IS_OK(status)) {
 297                 data_blob_free(out);
 298                 return -1;
 299         }
 300         return 0;
 301 }
 302
 303 /*
 304   compare two objectGUIDs
 305 */
 306 static int ldif_comparison_objectGUID(struct ldb_context *ldb, void *mem_ctx,
 307                                      const struct ldb_val *v1, const struct ldb_val *v2)
 308 {
 309         if (ldif_comparision_objectGUID_isString(v1) && ldif_comparision_objectGUID_isString(v2)) {
 310                 return ldb_comparison_binary(ldb, mem_ctx, v1, v2);
 311         } else if (ldif_comparision_objectGUID_isString(v1)
 312                    && !ldif_comparision_objectGUID_isString(v2)) {
 313                 struct ldb_val v;
 314                 int ret;
 315                 if (ldif_read_objectGUID(ldb, mem_ctx, v1, &v) != 0) {
 316                         /* Perhaps it wasn't a valid string after all */
 317                         return ldb_comparison_binary(ldb, mem_ctx, v1, v2);
 318                 }
 319                 ret = ldb_comparison_binary(ldb, mem_ctx, &v, v2);
 320                 talloc_free(v.data);
 321                 return ret;
 322         } else if (!ldif_comparision_objectGUID_isString(v1)
 323                    && ldif_comparision_objectGUID_isString(v2)) {
 324                 struct ldb_val v;
 325                 int ret;
 326                 if (ldif_read_objectGUID(ldb, mem_ctx, v2, &v) != 0) {
 327                         /* Perhaps it wasn't a valid string after all */
 328                         return ldb_comparison_binary(ldb, mem_ctx, v1, v2);
 329                 }
 330                 ret = ldb_comparison_binary(ldb, mem_ctx, v1, &v);
 331                 talloc_free(v.data);
 332                 return ret;
 333         }
 334         return ldb_comparison_binary(ldb, mem_ctx, v1, v2);
 335 }
 336
 337 /*
 338   canonicalise a objectGUID
 339 */
 340 static int ldif_canonicalise_objectGUID(struct ldb_context *ldb, void *mem_ctx,
 341                                        const struct ldb_val *in, struct ldb_val *out)
 342 {
 343         if (ldif_comparision_objectGUID_isString(in)) {
 344                 if (ldif_read_objectGUID(ldb, mem_ctx, in, out) != 0) {
 345                         /* Perhaps it wasn't a valid string after all */
 346                         return ldb_handler_copy(ldb, mem_ctx, in, out);
 347                 }
 348                 return 0;
 349         }
 350         return ldb_handler_copy(ldb, mem_ctx, in, out);
 351 }
 352
 353
 354 /*
 355   convert a ldif (SDDL) formatted ntSecurityDescriptor to a NDR formatted blob
 356 */
 357 static int ldif_read_ntSecurityDescriptor(struct ldb_context *ldb, void *mem_ctx,
 358                                           const struct ldb_val *in, struct ldb_val *out)
 359 {
 360         struct security_descriptor *sd;
 361         enum ndr_err_code ndr_err;
 362
 363         sd = talloc(mem_ctx, struct security_descriptor);
 364         if (sd == NULL) {
 365                 return -1;
 366         }
 367
 368         ndr_err = ndr_pull_struct_blob(in, sd, sd,
 369                                        (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 370         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 371                 /* If this does not parse, then it is probably SDDL, and we should try it that way */
 372
 373                 const struct dom_sid *sid = samdb_domain_sid(ldb);
 374                 talloc_free(sd);
 375                 sd = sddl_decode(mem_ctx, (const char *)in->data, sid);
 376                 if (sd == NULL) {
 377                         return -1;
 378                 }
 379         }
 380
 381         ndr_err = ndr_push_struct_blob(out, mem_ctx, sd,
 382                                        (ndr_push_flags_fn_t)ndr_push_security_descriptor);
 383         talloc_free(sd);
 384         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 385                 return -1;
 386         }
 387
 388         return 0;
 389 }
 390
 391 /*
 392   convert a NDR formatted blob to a ldif formatted ntSecurityDescriptor (SDDL format)
 393 */
 394 static int ldif_write_ntSecurityDescriptor(struct ldb_context *ldb, void *mem_ctx,
 395                                            const struct ldb_val *in, struct ldb_val *out)
 396 {
 397         struct security_descriptor *sd;
 398         enum ndr_err_code ndr_err;
 399
 400         if (ldb_get_flags(ldb) & LDB_FLG_SHOW_BINARY) {
 401                 return ldif_write_NDR(ldb, mem_ctx, in, out,
 402                                       sizeof(struct security_descriptor),
 403                                       (ndr_pull_flags_fn_t)ndr_pull_security_descriptor,
 404                                       (ndr_print_fn_t)ndr_print_security_descriptor,
 405                                       true);
 406
 407         }
 408
 409         sd = talloc(mem_ctx, struct security_descriptor);
 410         if (sd == NULL) {
 411                 return -1;
 412         }
 413         /* We can't use ndr_pull_struct_blob_all because this contains relative pointers */
 414         ndr_err = ndr_pull_struct_blob(in, sd, sd,
 415                                            (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 416         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 417                 talloc_free(sd);
 418                 return -1;
 419         }
 420         out->data = (uint8_t *)sddl_encode(mem_ctx, sd, samdb_domain_sid_cache_only(ldb));
 421         talloc_free(sd);
 422         if (out->data == NULL) {
 423                 return -1;
 424         }
 425         out->length = strlen((const char *)out->data);
 426         return 0;
 427 }
 428
 429 /*
 430   convert a string formatted SDDL to a ldif formatted ntSecurityDescriptor (SDDL format)
 431 */
 432 static int ldif_write_sddlSecurityDescriptor(struct ldb_context *ldb, void *mem_ctx,
 433                                            const struct ldb_val *in, struct ldb_val *out)
 434 {
 435         if (ldb_get_flags(ldb) & LDB_FLG_SHOW_BINARY) {
 436                 struct security_descriptor *sd;
 437                 const struct dom_sid *sid = samdb_domain_sid(ldb);
 438
 439                 sd = sddl_decode(mem_ctx, (const char *)in->data, sid);
 440                 out->data = (uint8_t *)ndr_print_struct_string(mem_ctx,
 441                                         (ndr_print_fn_t)ndr_print_security_descriptor,
 442                                         "SDDL", sd);
 443                 out->length = strlen((const char *)out->data);
 444                 talloc_free(sd);
 445                 return 0;
 446         }
 447
 448         return ldb_handler_copy(ldb, mem_ctx, in, out);
 449 }
 450
 451 /*
 452    canonicalise an objectCategory.  We use the long form as the canonical form:
 453    'person' becomes cn=Person,cn=Schema,cn=Configuration,<basedn>
 454
 455    Also any short name of an objectClass that points to a different
 456    class (such as user) has the canonical form of the class it's
 457    defaultObjectCategory points to (eg
 458    cn=Person,cn=Schema,cn=Configuration,<basedn>)
 459 */
 460
 461 static int ldif_canonicalise_objectCategory(struct ldb_context *ldb, void *mem_ctx,
 462                                             const struct ldb_val *in, struct ldb_val *out)
 463 {
 464         struct ldb_dn *dn1 = NULL;
 465         const struct dsdb_schema *schema = dsdb_get_schema(ldb, NULL);
 466         const struct dsdb_class *sclass;
 467         TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
 468         if (!tmp_ctx) {
 469                 return LDB_ERR_OPERATIONS_ERROR;
 470         }
 471
 472         if (!schema) {
 473                 talloc_free(tmp_ctx);
 474                 *out = data_blob_talloc(mem_ctx, in->data, in->length);
 475                 if (in->data && !out->data) {
 476                         return LDB_ERR_OPERATIONS_ERROR;
 477                 }
 478                 return LDB_SUCCESS;
 479         }
 480         dn1 = ldb_dn_from_ldb_val(tmp_ctx, ldb, in);
 481         if ( ! ldb_dn_validate(dn1)) {
 482                 const char *lDAPDisplayName = talloc_strndup(tmp_ctx, (char *)in->data, in->length);
 483                 sclass = dsdb_class_by_lDAPDisplayName(schema, lDAPDisplayName);
 484                 if (sclass) {
 485                         struct ldb_dn *dn = ldb_dn_new(mem_ctx, ldb,
 486                                                        sclass->defaultObjectCategory);
 487                         *out = data_blob_string_const(ldb_dn_alloc_casefold(mem_ctx, dn));
 488                         talloc_free(tmp_ctx);
 489
 490                         if (!out->data) {
 491                                 return LDB_ERR_OPERATIONS_ERROR;
 492                         }
 493                         return LDB_SUCCESS;
 494                 } else {
 495                         *out = data_blob_talloc(mem_ctx, in->data, in->length);
 496                         talloc_free(tmp_ctx);
 497
 498                         if (in->data && !out->data) {
 499                                 return LDB_ERR_OPERATIONS_ERROR;
 500                         }
 501                         return LDB_SUCCESS;
 502                 }
 503         }
 504         *out = data_blob_string_const(ldb_dn_alloc_casefold(mem_ctx, dn1));
 505         talloc_free(tmp_ctx);
 506
 507         if (!out->data) {
 508                 return LDB_ERR_OPERATIONS_ERROR;
 509         }
 510         return LDB_SUCCESS;
 511 }
 512
 513 static int ldif_comparison_objectCategory(struct ldb_context *ldb, void *mem_ctx,
 514                                           const struct ldb_val *v1,
 515                                           const struct ldb_val *v2)
 516 {
 517         return ldb_any_comparison(ldb, mem_ctx, ldif_canonicalise_objectCategory,
 518                                   v1, v2);
 519 }
 520
 521 /*
 522   convert a NDR formatted blob to a ldif formatted schemaInfo
 523 */
 524 static int ldif_write_schemaInfo(struct ldb_context *ldb, void *mem_ctx,
 525                                  const struct ldb_val *in, struct ldb_val *out)
 526 {
 527         return ldif_write_NDR(ldb, mem_ctx, in, out,
 528                               sizeof(struct repsFromToBlob),
 529                               (ndr_pull_flags_fn_t)ndr_pull_schemaInfoBlob,
 530                               (ndr_print_fn_t)ndr_print_schemaInfoBlob,
 531                               true);
 532 }
 533
 534 /*
 535   convert a ldif formatted prefixMap to a NDR formatted blob
 536 */
 537 static int ldif_read_prefixMap(struct ldb_context *ldb, void *mem_ctx,
 538                                const struct ldb_val *in, struct ldb_val *out)
 539 {
 540         struct prefixMapBlob *blob;
 541         enum ndr_err_code ndr_err;
 542         char *string, *line, *p, *oid;
 543         DATA_BLOB oid_blob;
 544
 545         TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
 546
 547         if (tmp_ctx == NULL) {
 548                 return -1;
 549         }
 550
 551         blob = talloc_zero(tmp_ctx, struct prefixMapBlob);
 552         if (blob == NULL) {
 553                 talloc_free(tmp_ctx);
 554                 return -1;
 555         }
 556
 557         /* use the switch value to detect if this is in the binary
 558          * format
 559          */
 560         if (in->length >= 4 && IVAL(in->data, 0) == PREFIX_MAP_VERSION_DSDB) {
 561                 ndr_err = ndr_pull_struct_blob(in, tmp_ctx, blob,
 562                                                (ndr_pull_flags_fn_t)ndr_pull_prefixMapBlob);
 563                 if (NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 564                         ndr_err = ndr_push_struct_blob(out, mem_ctx,
 565                                                        blob,
 566                                                        (ndr_push_flags_fn_t)ndr_push_prefixMapBlob);
 567                         talloc_free(tmp_ctx);
 568                         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 569                                 return -1;
 570                         }
 571                         return 0;
 572                 }
 573         }
 574
 575         /* If this does not parse, then it is probably the text version, and we should try it that way */
 576         blob->version = PREFIX_MAP_VERSION_DSDB;
 577
 578         string = talloc_strndup(mem_ctx, (const char *)in->data, in->length);
 579         if (string == NULL) {
 580                 talloc_free(blob);
 581                 return -1;
 582         }
 583
 584         line = string;
 585         while (line && line[0]) {
 586                 p=strchr(line, ';');
 587                 if (p) {
 588                         p[0] = '\0';
 589                 } else {
 590                         p=strchr(line, '\n');
 591                         if (p) {
 592                                 p[0] = '\0';
 593                         }
 594                 }
 595                 /* allow a trailing separator */
 596                 if (line == p) {
 597                         break;
 598                 }
 599
 600                 blob->ctr.dsdb.mappings = talloc_realloc(blob,
 601                                                          blob->ctr.dsdb.mappings,
 602                                                          struct drsuapi_DsReplicaOIDMapping,
 603                                                          blob->ctr.dsdb.num_mappings+1);
 604                 if (!blob->ctr.dsdb.mappings) {
 605                         talloc_free(tmp_ctx);
 606                         return -1;
 607                 }
 608
 609                 blob->ctr.dsdb.mappings[blob->ctr.dsdb.num_mappings].id_prefix = strtoul(line, &oid, 10);
 610
 611                 if (oid[0] != ':') {
 612                         talloc_free(tmp_ctx);
 613                         return -1;
 614                 }
 615
 616                 /* we know there must be at least ":" */
 617                 oid++;
 618
 619                 if (!ber_write_partial_OID_String(blob->ctr.dsdb.mappings, &oid_blob, oid)) {
 620                         talloc_free(tmp_ctx);
 621                         return -1;
 622                 }
 623                 blob->ctr.dsdb.mappings[blob->ctr.dsdb.num_mappings].oid.length = oid_blob.length;
 624                 blob->ctr.dsdb.mappings[blob->ctr.dsdb.num_mappings].oid.binary_oid = oid_blob.data;
 625
 626                 blob->ctr.dsdb.num_mappings++;
 627
 628                 /* Now look past the terminator we added above */
 629                 if (p) {
 630                         line = p + 1;
 631                 } else {
 632                         line = NULL;
 633                 }
 634         }
 635
 636         ndr_err = ndr_push_struct_blob(out, mem_ctx,
 637                                        blob,
 638                                        (ndr_push_flags_fn_t)ndr_push_prefixMapBlob);
 639         talloc_free(tmp_ctx);
 640         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 641                 return -1;
 642         }
 643         return 0;
 644 }
 645
 646 /*
 647   convert a NDR formatted blob to a ldif formatted prefixMap
 648 */
 649 static int ldif_write_prefixMap(struct ldb_context *ldb, void *mem_ctx,
 650                                 const struct ldb_val *in, struct ldb_val *out)
 651 {
 652         struct prefixMapBlob *blob;
 653         enum ndr_err_code ndr_err;
 654         char *string;
 655         uint32_t i;
 656
 657         if (ldb_get_flags(ldb) & LDB_FLG_SHOW_BINARY) {
 658                 int err;
 659                 /* try to decode the blob as S4 prefixMap */
 660                 err = ldif_write_NDR(ldb, mem_ctx, in, out,
 661                                      sizeof(struct prefixMapBlob),
 662                                      (ndr_pull_flags_fn_t)ndr_pull_prefixMapBlob,
 663                                      (ndr_print_fn_t)ndr_print_prefixMapBlob,
 664                                      false);
 665                 if (0 == err) {
 666                         return err;
 667                 }
 668                 /* try parsing it as Windows PrefixMap value */
 669                 return ldif_write_NDR(ldb, mem_ctx, in, out,
 670                                       sizeof(struct drsuapi_MSPrefixMap_Ctr),
 671                                       (ndr_pull_flags_fn_t)ndr_pull_drsuapi_MSPrefixMap_Ctr,
 672                                       (ndr_print_fn_t)ndr_print_drsuapi_MSPrefixMap_Ctr,
 673                                       true);
 674         }
 675
 676         blob = talloc(mem_ctx, struct prefixMapBlob);
 677         if (blob == NULL) {
 678                 return -1;
 679         }
 680         ndr_err = ndr_pull_struct_blob_all(in, blob,
 681                                            blob,
 682                                            (ndr_pull_flags_fn_t)ndr_pull_prefixMapBlob);
 683         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 684                 goto failed;
 685         }
 686         if (blob->version != PREFIX_MAP_VERSION_DSDB) {
 687                 goto failed;
 688         }
 689         string = talloc_strdup(mem_ctx, "");
 690         if (string == NULL) {
 691                 goto failed;
 692         }
 693
 694         for (i=0; i < blob->ctr.dsdb.num_mappings; i++) {
 695                 DATA_BLOB oid_blob;
 696                 char *partial_oid = NULL;
 697
 698                 if (i > 0) {
 699                         string = talloc_asprintf_append(string, ";");
 700                 }
 701
 702                 oid_blob = data_blob_const(blob->ctr.dsdb.mappings[i].oid.binary_oid,
 703                                            blob->ctr.dsdb.mappings[i].oid.length);
 704                 if (!ber_read_partial_OID_String(blob, oid_blob, &partial_oid)) {
 705                         DEBUG(0, ("ber_read_partial_OID failed on prefixMap item with id: 0x%X",
 706                                   blob->ctr.dsdb.mappings[i].id_prefix));
 707                         goto failed;
 708                 }
 709                 string = talloc_asprintf_append(string, "%u:%s",
 710                                                    blob->ctr.dsdb.mappings[i].id_prefix,
 711                                                    partial_oid);
 712                 talloc_free(discard_const(partial_oid));
 713                 if (string == NULL) {
 714                         goto failed;
 715                 }
 716         }
 717
 718         talloc_free(blob);
 719         *out = data_blob_string_const(string);
 720         return 0;
 721
 722 failed:
 723         talloc_free(blob);
 724         return -1;
 725 }
 726
 727 static bool ldif_comparision_prefixMap_isString(const struct ldb_val *v)
 728 {
 729         if (v->length < 4) {
 730                 return true;
 731         }
 732
 733         if (IVAL(v->data, 0) == PREFIX_MAP_VERSION_DSDB) {
 734                 return false;
 735         }
 736
 737         return true;
 738 }
 739
 740 /*
 741   canonicalise a prefixMap
 742 */
 743 static int ldif_canonicalise_prefixMap(struct ldb_context *ldb, void *mem_ctx,
 744                                        const struct ldb_val *in, struct ldb_val *out)
 745 {
 746         if (ldif_comparision_prefixMap_isString(in)) {
 747                 return ldif_read_prefixMap(ldb, mem_ctx, in, out);
 748         }
 749         return ldb_handler_copy(ldb, mem_ctx, in, out);
 750 }
 751
 752 static int ldif_comparison_prefixMap(struct ldb_context *ldb, void *mem_ctx,
 753                                      const struct ldb_val *v1,
 754                                      const struct ldb_val *v2)
 755 {
 756         return ldb_any_comparison(ldb, mem_ctx, ldif_canonicalise_prefixMap,
 757                                   v1, v2);
 758 }
 759
 760 /* length limited conversion of a ldb_val to a int32_t */
 761 static int val_to_int32(const struct ldb_val *in, int32_t *v)
 762 {
 763         char *end;
 764         char buf[64];
 765
 766         /* make sure we don't read past the end of the data */
 767         if (in->length > sizeof(buf)-1) {
 768                 return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
 769         }
 770         strncpy(buf, (char *)in->data, in->length);
 771         buf[in->length] = 0;
 772
 773         /* We've to use "strtoll" here to have the intended overflows.
 774          * Otherwise we may get "LONG_MAX" and the conversion is wrong. */
 775         *v = (int32_t) strtoll(buf, &end, 0);
 776         if (*end != 0) {
 777                 return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
 778         }
 779         return LDB_SUCCESS;
 780 }
 781
 782 /* length limited conversion of a ldb_val to a int64_t */
 783 static int val_to_int64(const struct ldb_val *in, int64_t *v)
 784 {
 785         char *end;
 786         char buf[64];
 787
 788         /* make sure we don't read past the end of the data */
 789         if (in->length > sizeof(buf)-1) {
 790                 return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
 791         }
 792         strncpy(buf, (char *)in->data, in->length);
 793         buf[in->length] = 0;
 794
 795         *v = (int64_t) strtoll(buf, &end, 0);
 796         if (*end != 0) {
 797                 return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
 798         }
 799         return LDB_SUCCESS;
 800 }
 801
 802 /* Canonicalisation of two 32-bit integers */
 803 static int ldif_canonicalise_int32(struct ldb_context *ldb, void *mem_ctx,
 804                         const struct ldb_val *in, struct ldb_val *out)
 805 {
 806         int32_t i;
 807         int ret;
 808
 809         ret = val_to_int32(in, &i);
 810         if (ret != LDB_SUCCESS) {
 811                 return ret;
 812         }
 813         out->data = (uint8_t *) talloc_asprintf(mem_ctx, "%d", i);
 814         if (out->data == NULL) {
 815                 ldb_oom(ldb);
 816                 return LDB_ERR_OPERATIONS_ERROR;
 817         }
 818         out->length = strlen((char *)out->data);
 819         return 0;
 820 }
 821
 822 /* Comparison of two 32-bit integers */
 823 static int ldif_comparison_int32(struct ldb_context *ldb, void *mem_ctx,
 824                                  const struct ldb_val *v1, const struct ldb_val *v2)
 825 {
 826         int32_t i1=0, i2=0;
 827         val_to_int32(v1, &i1);
 828         val_to_int32(v2, &i2);
 829         if (i1 == i2) return 0;
 830         return i1 > i2? 1 : -1;
 831 }
 832
 833 /* Canonicalisation of two 64-bit integers */
 834 static int ldif_canonicalise_int64(struct ldb_context *ldb, void *mem_ctx,
 835                                    const struct ldb_val *in, struct ldb_val *out)
 836 {
 837         int64_t i;
 838         int ret;
 839
 840         ret = val_to_int64(in, &i);
 841         if (ret != LDB_SUCCESS) {
 842                 return ret;
 843         }
 844         out->data = (uint8_t *) talloc_asprintf(mem_ctx, "%lld", (long long)i);
 845         if (out->data == NULL) {
 846                 ldb_oom(ldb);
 847                 return LDB_ERR_OPERATIONS_ERROR;
 848         }
 849         out->length = strlen((char *)out->data);
 850         return 0;
 851 }
 852
 853 /* Comparison of two 64-bit integers */
 854 static int ldif_comparison_int64(struct ldb_context *ldb, void *mem_ctx,
 855                                  const struct ldb_val *v1, const struct ldb_val *v2)
 856 {
 857         int64_t i1=0, i2=0;
 858         val_to_int64(v1, &i1);
 859         val_to_int64(v2, &i2);
 860         if (i1 == i2) return 0;
 861         return i1 > i2? 1 : -1;
 862 }
 863
 864 /*
 865   convert a NDR formatted blob to a ldif formatted repsFromTo
 866 */
 867 static int ldif_write_repsFromTo(struct ldb_context *ldb, void *mem_ctx,
 868                                  const struct ldb_val *in, struct ldb_val *out)
 869 {
 870         return ldif_write_NDR(ldb, mem_ctx, in, out,
 871                               sizeof(struct repsFromToBlob),
 872                               (ndr_pull_flags_fn_t)ndr_pull_repsFromToBlob,
 873                               (ndr_print_fn_t)ndr_print_repsFromToBlob,
 874                               true);
 875 }
 876
 877 /*
 878   convert a NDR formatted blob to a ldif formatted replPropertyMetaData
 879 */
 880 static int ldif_write_replPropertyMetaData(struct ldb_context *ldb, void *mem_ctx,
 881                                            const struct ldb_val *in, struct ldb_val *out)
 882 {
 883         return ldif_write_NDR(ldb, mem_ctx, in, out,
 884                               sizeof(struct replPropertyMetaDataBlob),
 885                               (ndr_pull_flags_fn_t)ndr_pull_replPropertyMetaDataBlob,
 886                               (ndr_print_fn_t)ndr_print_replPropertyMetaDataBlob,
 887                               true);
 888 }
 889
 890 /*
 891   convert a NDR formatted blob to a ldif formatted replUpToDateVector
 892 */
 893 static int ldif_write_replUpToDateVector(struct ldb_context *ldb, void *mem_ctx,
 894                                          const struct ldb_val *in, struct ldb_val *out)
 895 {
 896         return ldif_write_NDR(ldb, mem_ctx, in, out,
 897                               sizeof(struct replUpToDateVectorBlob),
 898                               (ndr_pull_flags_fn_t)ndr_pull_replUpToDateVectorBlob,
 899                               (ndr_print_fn_t)ndr_print_replUpToDateVectorBlob,
 900                               true);
 901 }
 902
 903
 904 /*
 905   convert a NDR formatted blob to a ldif formatted dnsRecord
 906 */
 907 static int ldif_write_dnsRecord(struct ldb_context *ldb, void *mem_ctx,
 908                                 const struct ldb_val *in, struct ldb_val *out)
 909 {
 910         return ldif_write_NDR(ldb, mem_ctx, in, out,
 911                               sizeof(struct dnsp_DnssrvRpcRecord),
 912                               (ndr_pull_flags_fn_t)ndr_pull_dnsp_DnssrvRpcRecord,
 913                               (ndr_print_fn_t)ndr_print_dnsp_DnssrvRpcRecord,
 914                               true);
 915 }
 916
 917 /*
 918   convert a NDR formatted blob to a ldif formatted dnsProperty
 919 */
 920 static int ldif_write_dnsProperty(struct ldb_context *ldb, void *mem_ctx,
 921                                 const struct ldb_val *in, struct ldb_val *out)
 922 {
 923         return ldif_write_NDR(ldb, mem_ctx, in, out,
 924                               sizeof(struct dnsp_DnsProperty),
 925                               (ndr_pull_flags_fn_t)ndr_pull_dnsp_DnsProperty,
 926                               (ndr_print_fn_t)ndr_print_dnsp_DnsProperty,
 927                               true);
 928 }
 929
 930 /*
 931   convert a NDR formatted blob of a supplementalCredentials into text
 932 */
 933 static int ldif_write_supplementalCredentialsBlob(struct ldb_context *ldb, void *mem_ctx,
 934                                                   const struct ldb_val *in, struct ldb_val *out)
 935 {
 936         return ldif_write_NDR(ldb, mem_ctx, in, out,
 937                               sizeof(struct supplementalCredentialsBlob),
 938                               (ndr_pull_flags_fn_t)ndr_pull_supplementalCredentialsBlob,
 939                               (ndr_print_fn_t)ndr_print_supplementalCredentialsBlob,
 940                               true);
 941 }
 942
 943 /*
 944   convert a NDR formatted blob to a ldif formatted trustAuthInOutBlob
 945 */
 946 static int ldif_write_trustAuthInOutBlob(struct ldb_context *ldb, void *mem_ctx,
 947                                            const struct ldb_val *in, struct ldb_val *out)
 948 {
 949         return ldif_write_NDR(ldb, mem_ctx, in, out,
 950                               sizeof(struct trustAuthInOutBlob),
 951                               (ndr_pull_flags_fn_t)ndr_pull_trustAuthInOutBlob,
 952                               (ndr_print_fn_t)ndr_print_trustAuthInOutBlob,
 953                               true);
 954 }
 955
 956 /*
 957   convert a NDR formatted blob of a partialAttributeSet into text
 958 */
 959 static int ldif_write_partialAttributeSet(struct ldb_context *ldb, void *mem_ctx,
 960                                           const struct ldb_val *in, struct ldb_val *out)
 961 {
 962         return ldif_write_NDR(ldb, mem_ctx, in, out,
 963                               sizeof(struct partialAttributeSetBlob),
 964                               (ndr_pull_flags_fn_t)ndr_pull_partialAttributeSetBlob,
 965                               (ndr_print_fn_t)ndr_print_partialAttributeSetBlob,
 966                               true);
 967 }
 968
 969
 970 static int extended_dn_write_hex(struct ldb_context *ldb, void *mem_ctx,
 971                                  const struct ldb_val *in, struct ldb_val *out)
 972 {
 973         *out = data_blob_string_const(data_blob_hex_string_lower(mem_ctx, in));
 974         if (!out->data) {
 975                 return -1;
 976         }
 977         return 0;
 978 }
 979
 980 /*
 981   compare two dns
 982 */
 983 static int samba_ldb_dn_link_comparison(struct ldb_context *ldb, void *mem_ctx,
 984                                         const struct ldb_val *v1, const struct ldb_val *v2)
 985 {
 986         struct ldb_dn *dn1 = NULL, *dn2 = NULL;
 987         int ret;
 988
 989         if (dsdb_dn_is_deleted_val(v1)) {
 990                 /* If the DN is deleted, then we can't search for it */
 991                 return -1;
 992         }
 993
 994         if (dsdb_dn_is_deleted_val(v2)) {
 995                 /* If the DN is deleted, then we can't search for it */
 996                 return -1;
 997         }
 998
 999         dn1 = ldb_dn_from_ldb_val(mem_ctx, ldb, v1);
1000         if ( ! ldb_dn_validate(dn1)) return -1;
1001
1002         dn2 = ldb_dn_from_ldb_val(mem_ctx, ldb, v2);
1003         if ( ! ldb_dn_validate(dn2)) {
1004                 talloc_free(dn1);
1005                 return -1;
1006         }
1007
1008         ret = ldb_dn_compare(dn1, dn2);
1009
1010         talloc_free(dn1);
1011         talloc_free(dn2);
1012         return ret;
1013 }
1014
1015 static int samba_ldb_dn_link_canonicalise(struct ldb_context *ldb, void *mem_ctx,
1016                                           const struct ldb_val *in, struct ldb_val *out)
1017 {
1018         struct ldb_dn *dn;
1019         int ret = -1;
1020
1021         out->length = 0;
1022         out->data = NULL;
1023
1024         dn = ldb_dn_from_ldb_val(mem_ctx, ldb, in);
1025         if ( ! ldb_dn_validate(dn)) {
1026                 return LDB_ERR_INVALID_DN_SYNTAX;
1027         }
1028
1029         /* By including the RMD_FLAGS of a deleted DN, we ensure it
1030          * does not casually match a not deleted DN */
1031         if (dsdb_dn_is_deleted_val(in)) {
1032                 out->data = (uint8_t *)talloc_asprintf(mem_ctx,
1033                                                        "<RMD_FLAGS=%u>%s",
1034                                                        dsdb_dn_val_rmd_flags(in),
1035                                                        ldb_dn_get_casefold(dn));
1036         } else {
1037                 out->data = (uint8_t *)ldb_dn_alloc_casefold(mem_ctx, dn);
1038         }
1039
1040         if (out->data == NULL) {
1041                 goto done;
1042         }
1043         out->length = strlen((char *)out->data);
1044
1045         ret = 0;
1046
1047 done:
1048         talloc_free(dn);
1049
1050         return ret;
1051 }
1052
1053
1054 /*
1055   write a 64 bit 2-part range
1056 */
1057 static int ldif_write_range64(struct ldb_context *ldb, void *mem_ctx,
1058                               const struct ldb_val *in, struct ldb_val *out)
1059 {
1060         int64_t v;
1061         int ret;
1062         ret = val_to_int64(in, &v);
1063         if (ret != LDB_SUCCESS) {
1064                 return ret;
1065         }
1066         out->data = (uint8_t *)talloc_asprintf(mem_ctx, "%lu-%lu",
1067                                                (unsigned long)(v&0xFFFFFFFF),
1068                                                (unsigned long)(v>>32));
1069         if (out->data == NULL) {
1070                 ldb_oom(ldb);
1071                 return LDB_ERR_OPERATIONS_ERROR;
1072         }
1073         out->length = strlen((char *)out->data);
1074         return LDB_SUCCESS;
1075 }
1076
1077 /*
1078   read a 64 bit 2-part range
1079 */
1080 static int ldif_read_range64(struct ldb_context *ldb, void *mem_ctx,
1081                               const struct ldb_val *in, struct ldb_val *out)
1082 {
1083         unsigned long high, low;
1084         char buf[64];
1085
1086         if (memchr(in->data, '-', in->length) == NULL) {
1087                 return ldb_handler_copy(ldb, mem_ctx, in, out);
1088         }
1089
1090         if (in->length > sizeof(buf)-1) {
1091                 return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
1092         }
1093         strncpy(buf, (const char *)in->data, in->length);
1094         buf[in->length] = 0;
1095
1096         if (sscanf(buf, "%lu-%lu", &low, &high) != 2) {
1097                 return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
1098         }
1099
1100         out->data = (uint8_t *)talloc_asprintf(mem_ctx, "%llu",
1101                                                (unsigned long long)(((uint64_t)high)<<32) | (low));
1102
1103         if (out->data == NULL) {
1104                 ldb_oom(ldb);
1105                 return LDB_ERR_OPERATIONS_ERROR;
1106         }
1107         out->length = strlen((char *)out->data);
1108         return LDB_SUCCESS;
1109 }
1110
1111 /*
1112   when this operator_fn is set for a syntax, the backend calls is in
1113   preference to the comparison function. We are told the exact
1114   comparison operation that is needed, and we can return errors
1115  */
1116 static int samba_syntax_operator_fn(struct ldb_context *ldb, enum ldb_parse_op operation,
1117                                     const struct ldb_schema_attribute *a,
1118                                     const struct ldb_val *v1, const struct ldb_val *v2, bool *matched)
1119 {
1120         switch (operation) {
1121         case LDB_OP_AND:
1122         case LDB_OP_OR:
1123         case LDB_OP_NOT:
1124         case LDB_OP_SUBSTRING:
1125         case LDB_OP_APPROX:
1126         case LDB_OP_EXTENDED:
1127                 /* handled in the backends */
1128                 return LDB_ERR_INAPPROPRIATE_MATCHING;
1129
1130         case LDB_OP_GREATER:
1131         case LDB_OP_LESS:
1132         case LDB_OP_EQUALITY:
1133         {
1134                 TALLOC_CTX *tmp_ctx = talloc_new(ldb);
1135                 int ret;
1136                 if (tmp_ctx == NULL) {
1137                         return ldb_oom(ldb);
1138                 }
1139                 ret = a->syntax->comparison_fn(ldb, tmp_ctx, v1, v2);
1140                 talloc_free(tmp_ctx);
1141                 if (operation == LDB_OP_GREATER) {
1142                         *matched = (ret > 0);
1143                 } else if (operation == LDB_OP_LESS) {
1144                         *matched = (ret < 0);
1145                 } else {
1146                         *matched = (ret == 0);
1147                 }
1148                 return LDB_SUCCESS;
1149         }
1150
1151         case LDB_OP_PRESENT:
1152                 *matched = true;
1153                 return LDB_SUCCESS;
1154         }
1155
1156         /* we shouldn't get here */
1157         return LDB_ERR_INAPPROPRIATE_MATCHING;
1158 }
1159
1160 /*
1161   see if two DNs match, comparing first by GUID, then by SID, and
1162   finally by string components
1163  */
1164 static int samba_dn_extended_match(struct ldb_context *ldb,
1165                                    const struct ldb_val *v1,
1166                                    const struct ldb_val *v2,
1167                                    bool *matched)
1168 {
1169         TALLOC_CTX *tmp_ctx;
1170         struct ldb_dn *dn1, *dn2;
1171         const struct ldb_val *guid1, *guid2, *sid1, *sid2;
1172         uint32_t rmd_flags1, rmd_flags2;
1173
1174         tmp_ctx = talloc_new(ldb);
1175
1176         dn1 = ldb_dn_from_ldb_val(tmp_ctx, ldb, v1);
1177         dn2 = ldb_dn_from_ldb_val(tmp_ctx, ldb, v2);
1178         if (!dn1 || !dn2) {
1179                 /* couldn't parse as DN's */
1180                 talloc_free(tmp_ctx);
1181                 (*matched) = false;
1182                 return LDB_SUCCESS;
1183         }
1184
1185         rmd_flags1 = dsdb_dn_rmd_flags(dn1);
1186         rmd_flags2 = dsdb_dn_rmd_flags(dn2);
1187
1188         if ((rmd_flags1 & DSDB_RMD_FLAG_DELETED) !=
1189             (rmd_flags2 & DSDB_RMD_FLAG_DELETED)) {
1190                 /* only match if they have the same deletion status */
1191                 talloc_free(tmp_ctx);
1192                 (*matched) = false;
1193                 return LDB_SUCCESS;
1194         }
1195
1196
1197         guid1 = ldb_dn_get_extended_component(dn1, "GUID");
1198         guid2 = ldb_dn_get_extended_component(dn2, "GUID");
1199         if (guid1 && guid2) {
1200                 (*matched) = (data_blob_cmp(guid1, guid2) == 0);
1201                 talloc_free(tmp_ctx);
1202                 return LDB_SUCCESS;
1203         }
1204
1205         sid1 = ldb_dn_get_extended_component(dn1, "SID");
1206         sid2 = ldb_dn_get_extended_component(dn2, "SID");
1207         if (sid1 && sid2) {
1208                 (*matched) = (data_blob_cmp(sid1, sid2) == 0);
1209                 talloc_free(tmp_ctx);
1210                 return LDB_SUCCESS;
1211         }
1212
1213         (*matched) = (ldb_dn_compare(dn1, dn2) == 0);
1214
1215         talloc_free(tmp_ctx);
1216         return LDB_SUCCESS;
1217 }
1218
1219 /*
1220   special operation for DNs, to take account of the RMD_FLAGS deleted bit
1221  */
1222 static int samba_syntax_operator_dn(struct ldb_context *ldb, enum ldb_parse_op operation,
1223                                     const struct ldb_schema_attribute *a,
1224                                     const struct ldb_val *v1, const struct ldb_val *v2, bool *matched)
1225 {
1226         if (operation == LDB_OP_PRESENT && dsdb_dn_is_deleted_val(v1)) {
1227                 /* If the DN is deleted, then we can't search for it */
1228
1229                 /* should this be for equality too? */
1230                 *matched = false;
1231                 return LDB_SUCCESS;
1232         }
1233
1234         if (operation == LDB_OP_EQUALITY &&
1235             samba_dn_extended_match(ldb, v1, v2, matched) == LDB_SUCCESS) {
1236                 return LDB_SUCCESS;
1237         }
1238
1239         return samba_syntax_operator_fn(ldb, operation, a, v1, v2, matched);
1240 }
1241
1242
1243 static const struct ldb_schema_syntax samba_syntaxes[] = {
1244         {
1245                 .name             = LDB_SYNTAX_SAMBA_SID,
1246                 .ldif_read_fn     = ldif_read_objectSid,
1247                 .ldif_write_fn    = ldif_write_objectSid,
1248                 .canonicalise_fn  = ldif_canonicalise_objectSid,
1249                 .comparison_fn    = ldif_comparison_objectSid,
1250                 .operator_fn      = samba_syntax_operator_fn
1251         },{
1252                 .name             = LDB_SYNTAX_SAMBA_SECURITY_DESCRIPTOR,
1253                 .ldif_read_fn     = ldif_read_ntSecurityDescriptor,
1254                 .ldif_write_fn    = ldif_write_ntSecurityDescriptor,
1255                 .canonicalise_fn  = ldb_handler_copy,
1256                 .comparison_fn    = ldb_comparison_binary,
1257                 .operator_fn      = samba_syntax_operator_fn
1258         },{
1259                 .name             = LDB_SYNTAX_SAMBA_SDDL_SECURITY_DESCRIPTOR,
1260                 .ldif_read_fn     = ldb_handler_copy,
1261                 .ldif_write_fn    = ldif_write_sddlSecurityDescriptor,
1262                 .canonicalise_fn  = ldb_handler_fold,
1263                 .comparison_fn    = ldb_comparison_fold,
1264                 .operator_fn      = samba_syntax_operator_fn
1265         },{
1266                 .name             = LDB_SYNTAX_SAMBA_GUID,
1267                 .ldif_read_fn     = ldif_read_objectGUID,
1268                 .ldif_write_fn    = ldif_write_objectGUID,
1269                 .canonicalise_fn  = ldif_canonicalise_objectGUID,
1270                 .comparison_fn    = ldif_comparison_objectGUID,
1271                 .operator_fn      = samba_syntax_operator_fn
1272         },{
1273                 .name             = LDB_SYNTAX_SAMBA_OBJECT_CATEGORY,
1274                 .ldif_read_fn     = ldb_handler_copy,
1275                 .ldif_write_fn    = ldb_handler_copy,
1276                 .canonicalise_fn  = ldif_canonicalise_objectCategory,
1277                 .comparison_fn    = ldif_comparison_objectCategory,
1278                 .operator_fn      = samba_syntax_operator_fn
1279         },{
1280                 .name             = LDB_SYNTAX_SAMBA_SCHEMAINFO,
1281                 .ldif_read_fn     = ldb_handler_copy,
1282                 .ldif_write_fn    = ldif_write_schemaInfo,
1283                 .canonicalise_fn  = ldb_handler_copy,
1284                 .comparison_fn    = ldb_comparison_binary,
1285                 .operator_fn      = samba_syntax_operator_fn
1286         },{
1287                 .name             = LDB_SYNTAX_SAMBA_PREFIX_MAP,
1288                 .ldif_read_fn     = ldif_read_prefixMap,
1289                 .ldif_write_fn    = ldif_write_prefixMap,
1290                 .canonicalise_fn  = ldif_canonicalise_prefixMap,
1291                 .comparison_fn    = ldif_comparison_prefixMap,
1292                 .operator_fn      = samba_syntax_operator_fn
1293         },{
1294                 .name             = LDB_SYNTAX_SAMBA_INT32,
1295                 .ldif_read_fn     = ldb_handler_copy,
1296                 .ldif_write_fn    = ldb_handler_copy,
1297                 .canonicalise_fn  = ldif_canonicalise_int32,
1298                 .comparison_fn    = ldif_comparison_int32,
1299                 .operator_fn      = samba_syntax_operator_fn
1300         },{
1301                 .name             = LDB_SYNTAX_SAMBA_REPSFROMTO,
1302                 .ldif_read_fn     = ldb_handler_copy,
1303                 .ldif_write_fn    = ldif_write_repsFromTo,
1304                 .canonicalise_fn  = ldb_handler_copy,
1305                 .comparison_fn    = ldb_comparison_binary,
1306                 .operator_fn      = samba_syntax_operator_fn
1307         },{
1308                 .name             = LDB_SYNTAX_SAMBA_REPLPROPERTYMETADATA,
1309                 .ldif_read_fn     = ldb_handler_copy,
1310                 .ldif_write_fn    = ldif_write_replPropertyMetaData,
1311                 .canonicalise_fn  = ldb_handler_copy,
1312                 .comparison_fn    = ldb_comparison_binary,
1313                 .operator_fn      = samba_syntax_operator_fn
1314         },{
1315                 .name             = LDB_SYNTAX_SAMBA_REPLUPTODATEVECTOR,
1316                 .ldif_read_fn     = ldb_handler_copy,
1317                 .ldif_write_fn    = ldif_write_replUpToDateVector,
1318                 .canonicalise_fn  = ldb_handler_copy,
1319                 .comparison_fn    = ldb_comparison_binary,
1320                 .operator_fn      = samba_syntax_operator_fn
1321         },{
1322                 .name             = LDB_SYNTAX_SAMBA_TRUSTAUTHINOUTBLOB,
1323                 .ldif_read_fn     = ldb_handler_copy,
1324                 .ldif_write_fn    = ldif_write_trustAuthInOutBlob,
1325                 .canonicalise_fn  = ldb_handler_copy,
1326                 .comparison_fn    = ldb_comparison_binary,
1327                 .operator_fn      = samba_syntax_operator_fn
1328         },{
1329                 .name             = DSDB_SYNTAX_BINARY_DN,
1330                 .ldif_read_fn     = ldb_handler_copy,
1331                 .ldif_write_fn    = ldb_handler_copy,
1332                 .canonicalise_fn  = dsdb_dn_binary_canonicalise,
1333                 .comparison_fn    = dsdb_dn_binary_comparison,
1334                 .operator_fn      = samba_syntax_operator_fn
1335         },{
1336                 .name             = DSDB_SYNTAX_STRING_DN,
1337                 .ldif_read_fn     = ldb_handler_copy,
1338                 .ldif_write_fn    = ldb_handler_copy,
1339                 .canonicalise_fn  = dsdb_dn_string_canonicalise,
1340                 .comparison_fn    = dsdb_dn_string_comparison,
1341                 .operator_fn      = samba_syntax_operator_fn
1342         },{
1343                 .name             = LDB_SYNTAX_DN,
1344                 .ldif_read_fn     = ldb_handler_copy,
1345                 .ldif_write_fn    = ldb_handler_copy,
1346                 .canonicalise_fn  = samba_ldb_dn_link_canonicalise,
1347                 .comparison_fn    = samba_ldb_dn_link_comparison,
1348                 .operator_fn      = samba_syntax_operator_dn
1349         },{
1350                 .name             = LDB_SYNTAX_SAMBA_RANGE64,
1351                 .ldif_read_fn     = ldif_read_range64,
1352                 .ldif_write_fn    = ldif_write_range64,
1353                 .canonicalise_fn  = ldif_canonicalise_int64,
1354                 .comparison_fn    = ldif_comparison_int64,
1355                 .operator_fn      = samba_syntax_operator_fn
1356         },{
1357                 .name             = LDB_SYNTAX_SAMBA_DNSRECORD,
1358                 .ldif_read_fn     = ldb_handler_copy,
1359                 .ldif_write_fn    = ldif_write_dnsRecord,
1360                 .canonicalise_fn  = ldb_handler_copy,
1361                 .comparison_fn    = ldb_comparison_binary,
1362                 .operator_fn      = samba_syntax_operator_fn
1363         },{
1364                 .name             = LDB_SYNTAX_SAMBA_DNSPROPERTY,
1365                 .ldif_read_fn     = ldb_handler_copy,
1366                 .ldif_write_fn    = ldif_write_dnsProperty,
1367                 .canonicalise_fn  = ldb_handler_copy,
1368                 .comparison_fn    = ldb_comparison_binary,
1369                 .operator_fn      = samba_syntax_operator_fn
1370         },{
1371                 .name             = LDB_SYNTAX_SAMBA_SUPPLEMENTALCREDENTIALS,
1372                 .ldif_read_fn     = ldb_handler_copy,
1373                 .ldif_write_fn    = ldif_write_supplementalCredentialsBlob,
1374                 .canonicalise_fn  = ldb_handler_copy,
1375                 .comparison_fn    = ldb_comparison_binary,
1376                 .operator_fn      = samba_syntax_operator_fn
1377         },{
1378                 .name             = LDB_SYNTAX_SAMBA_PARTIALATTRIBUTESET,
1379                 .ldif_read_fn     = ldb_handler_copy,
1380                 .ldif_write_fn    = ldif_write_partialAttributeSet,
1381                 .canonicalise_fn  = ldb_handler_copy,
1382                 .comparison_fn    = ldb_comparison_binary,
1383                 .operator_fn      = samba_syntax_operator_fn
1384         }
1385 };
1386
1387 static const struct ldb_dn_extended_syntax samba_dn_syntax[] = {
1388         {
1389                 .name             = "SID",
1390                 .read_fn          = extended_dn_read_SID,
1391                 .write_clear_fn   = ldif_write_objectSid,
1392                 .write_hex_fn     = extended_dn_write_hex
1393         },{
1394                 .name             = "GUID",
1395                 .read_fn          = extended_dn_read_GUID,
1396                 .write_clear_fn   = ldif_write_objectGUID,
1397                 .write_hex_fn     = extended_dn_write_hex
1398         },{
1399                 .name             = "WKGUID",
1400                 .read_fn          = ldb_handler_copy,
1401                 .write_clear_fn   = ldb_handler_copy,
1402                 .write_hex_fn     = ldb_handler_copy
1403         },{
1404                 .name             = "RMD_INVOCID",
1405                 .read_fn          = extended_dn_read_GUID,
1406                 .write_clear_fn   = ldif_write_objectGUID,
1407                 .write_hex_fn     = extended_dn_write_hex
1408         },{
1409                 .name             = "RMD_FLAGS",
1410                 .read_fn          = ldb_handler_copy,
1411                 .write_clear_fn   = ldb_handler_copy,
1412                 .write_hex_fn     = ldb_handler_copy
1413         },{
1414                 .name             = "RMD_ADDTIME",
1415                 .read_fn          = ldb_handler_copy,
1416                 .write_clear_fn   = ldb_handler_copy,
1417                 .write_hex_fn     = ldb_handler_copy
1418         },{
1419                 .name             = "RMD_CHANGETIME",
1420                 .read_fn          = ldb_handler_copy,
1421                 .write_clear_fn   = ldb_handler_copy,
1422                 .write_hex_fn     = ldb_handler_copy
1423         },{
1424                 .name             = "RMD_LOCAL_USN",
1425                 .read_fn          = ldb_handler_copy,
1426                 .write_clear_fn   = ldb_handler_copy,
1427                 .write_hex_fn     = ldb_handler_copy
1428         },{
1429                 .name             = "RMD_ORIGINATING_USN",
1430                 .read_fn          = ldb_handler_copy,
1431                 .write_clear_fn   = ldb_handler_copy,
1432                 .write_hex_fn     = ldb_handler_copy
1433         },{
1434                 .name             = "RMD_VERSION",
1435                 .read_fn          = ldb_handler_copy,
1436                 .write_clear_fn   = ldb_handler_copy,
1437                 .write_hex_fn     = ldb_handler_copy
1438         }
1439 };
1440
1441 /* TODO: Should be dynamic at some point */
1442 static const struct {
1443         const char *name;
1444         const char *syntax;
1445 } samba_attributes[] = {
1446         { "objectSid",                  LDB_SYNTAX_SAMBA_SID },
1447         { "securityIdentifier",         LDB_SYNTAX_SAMBA_SID },
1448         { "tokenGroups",                LDB_SYNTAX_SAMBA_SID },
1449         { "ntSecurityDescriptor",       LDB_SYNTAX_SAMBA_SECURITY_DESCRIPTOR },
1450         { "oMSyntax",                   LDB_SYNTAX_SAMBA_INT32 },
1451         { "objectCategory",             LDB_SYNTAX_SAMBA_OBJECT_CATEGORY },
1452         { "schemaInfo",                 LDB_SYNTAX_SAMBA_SCHEMAINFO },
1453         { "prefixMap",                  LDB_SYNTAX_SAMBA_PREFIX_MAP },
1454         { "repsFrom",                   LDB_SYNTAX_SAMBA_REPSFROMTO },
1455         { "repsTo",                     LDB_SYNTAX_SAMBA_REPSFROMTO },
1456         { "replPropertyMetaData",       LDB_SYNTAX_SAMBA_REPLPROPERTYMETADATA },
1457         { "replUpToDateVector",         LDB_SYNTAX_SAMBA_REPLUPTODATEVECTOR },
1458         { "trustAuthIncoming",          LDB_SYNTAX_SAMBA_TRUSTAUTHINOUTBLOB },
1459         { "trustAuthOutgoing",          LDB_SYNTAX_SAMBA_TRUSTAUTHINOUTBLOB },
1460         { "rIDAllocationPool",          LDB_SYNTAX_SAMBA_RANGE64 },
1461         { "rIDPreviousAllocationPool",  LDB_SYNTAX_SAMBA_RANGE64 },
1462         { "rIDAvailablePool",           LDB_SYNTAX_SAMBA_RANGE64 },
1463         { "defaultSecurityDescriptor",  LDB_SYNTAX_SAMBA_SDDL_SECURITY_DESCRIPTOR },
1464
1465         /*
1466          * these are extracted by searching
1467          * (&(attributeSyntax=2.5.5.10)(rangeLower=16)(rangeUpper=16)(omSyntax=4))
1468          */
1469         { "attributeSecurityGUID",              LDB_SYNTAX_SAMBA_GUID },
1470         { "categoryId",                         LDB_SYNTAX_SAMBA_GUID },
1471         { "controlAccessRights",                LDB_SYNTAX_SAMBA_GUID },
1472         { "currMachineId",                      LDB_SYNTAX_SAMBA_GUID },
1473         { "fRSReplicaSetGUID",                  LDB_SYNTAX_SAMBA_GUID },
1474         { "fRSVersionGUID",                     LDB_SYNTAX_SAMBA_GUID },
1475         { "implementedCategories",              LDB_SYNTAX_SAMBA_GUID },
1476         { "msDS-AzObjectGuid",                  LDB_SYNTAX_SAMBA_GUID },
1477         { "msDFSR-ContentSetGuid",              LDB_SYNTAX_SAMBA_GUID },
1478         { "msDFSR-ReplicationGroupGuid",        LDB_SYNTAX_SAMBA_GUID },
1479         { "mSMQDigests",                        LDB_SYNTAX_SAMBA_GUID },
1480         { "mSMQOwnerID",                        LDB_SYNTAX_SAMBA_GUID },
1481         { "mSMQQMID",                           LDB_SYNTAX_SAMBA_GUID },
1482         { "mSMQQueueType",                      LDB_SYNTAX_SAMBA_GUID },
1483         { "mSMQSites",                          LDB_SYNTAX_SAMBA_GUID },
1484         { "netbootGUID",                        LDB_SYNTAX_SAMBA_GUID },
1485         { "objectGUID",                         LDB_SYNTAX_SAMBA_GUID },
1486         { "pKTGuid",                            LDB_SYNTAX_SAMBA_GUID },
1487         { "requiredCategories",                 LDB_SYNTAX_SAMBA_GUID },
1488         { "schemaIDGUID",                       LDB_SYNTAX_SAMBA_GUID },
1489         { "siteGUID",                           LDB_SYNTAX_SAMBA_GUID },
1490         { "msDFS-GenerationGUIDv2",             LDB_SYNTAX_SAMBA_GUID },
1491         { "msDFS-LinkIdentityGUIDv2",           LDB_SYNTAX_SAMBA_GUID },
1492         { "msDFS-NamespaceIdentityGUIDv2",      LDB_SYNTAX_SAMBA_GUID },
1493
1494         /*
1495          * these are known to be GUIDs
1496          */
1497         { "invocationId",                       LDB_SYNTAX_SAMBA_GUID },
1498         { "parentGUID",                         LDB_SYNTAX_SAMBA_GUID },
1499         { "msDS-OptionalFeatureGUID",           LDB_SYNTAX_SAMBA_GUID },
1500
1501         /* These NDR encoded things we want to be able to read with --show-binary */
1502         { "dnsRecord",                          LDB_SYNTAX_SAMBA_DNSRECORD },
1503         { "dNSProperty",                        LDB_SYNTAX_SAMBA_DNSPROPERTY },
1504         { "supplementalCredentials",            LDB_SYNTAX_SAMBA_SUPPLEMENTALCREDENTIALS},
1505         { "partialAttributeSet",                LDB_SYNTAX_SAMBA_PARTIALATTRIBUTESET}
1506 };
1507
1508 const struct ldb_schema_syntax *ldb_samba_syntax_by_name(struct ldb_context *ldb, const char *name)
1509 {
1510         unsigned int j;
1511         const struct ldb_schema_syntax *s = NULL;
1512
1513         for (j=0; j < ARRAY_SIZE(samba_syntaxes); j++) {
1514                 if (strcmp(name, samba_syntaxes[j].name) == 0) {
1515                         s = &samba_syntaxes[j];
1516                         break;
1517                 }
1518         }
1519         return s;
1520 }
1521
1522 const struct ldb_schema_syntax *ldb_samba_syntax_by_lDAPDisplayName(struct ldb_context *ldb, const char *name)
1523 {
1524         unsigned int j;
1525         const struct ldb_schema_syntax *s = NULL;
1526
1527         for (j=0; j < ARRAY_SIZE(samba_attributes); j++) {
1528                 if (strcmp(samba_attributes[j].name, name) == 0) {
1529                         s = ldb_samba_syntax_by_name(ldb, samba_attributes[j].syntax);
1530                         break;
1531                 }
1532         }
1533
1534         return s;
1535 }
1536
1537 /*
1538   register the samba ldif handlers
1539 */
1540 int ldb_register_samba_handlers(struct ldb_context *ldb)
1541 {
1542         unsigned int i;
1543         int ret;
1544
1545         if (ldb_get_opaque(ldb, "SAMBA_HANDLERS_REGISTERED") != NULL) {
1546                 return LDB_SUCCESS;
1547         }
1548
1549         for (i=0; i < ARRAY_SIZE(samba_attributes); i++) {
1550                 const struct ldb_schema_syntax *s = NULL;
1551
1552                 s = ldb_samba_syntax_by_name(ldb, samba_attributes[i].syntax);
1553
1554                 if (!s) {
1555                         s = ldb_standard_syntax_by_name(ldb, samba_attributes[i].syntax);
1556                 }
1557
1558                 if (!s) {
1559                         return LDB_ERR_OPERATIONS_ERROR;
1560                 }
1561
1562                 ret = ldb_schema_attribute_add_with_syntax(ldb, samba_attributes[i].name, LDB_ATTR_FLAG_FIXED, s);
1563                 if (ret != LDB_SUCCESS) {
1564                         return ret;
1565                 }
1566         }
1567
1568         for (i=0; i < ARRAY_SIZE(samba_dn_syntax); i++) {
1569                 ret = ldb_dn_extended_add_syntax(ldb, LDB_ATTR_FLAG_FIXED, &samba_dn_syntax[i]);
1570                 if (ret != LDB_SUCCESS) {
1571                         return ret;
1572                 }
1573
1574         }
1575
1576         ret = ldb_set_opaque(ldb, "SAMBA_HANDLERS_REGISTERED", (void*)1);
1577         if (ret != LDB_SUCCESS) {
1578                 return ret;
1579         }
1580
1581         return LDB_SUCCESS;
1582 }