git.sur5r.net Git - openldap/blob - servers/slapd/filterentry.c

   1 /* filterentry.c - apply a filter to an entry */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2004 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  17  * All rights reserved.
  18  *
  19  * Redistribution and use in source and binary forms are permitted
  20  * provided that this notice is preserved and that due credit is given
  21  * to the University of Michigan at Ann Arbor. The name of the University
  22  * may not be used to endorse or promote products derived from this
  23  * software without specific prior written permission. This software
  24  * is provided ``as is'' without express or implied warranty.
  25  */
  26
  27 #include "portable.h"
  28
  29 #include <stdio.h>
  30
  31 #include <ac/socket.h>
  32 #include <ac/string.h>
  33
  34
  35 #include "slap.h"
  36
  37 static int      test_filter_and( Operation *op, Entry *e, Filter *flist );
  38 static int      test_filter_or( Operation *op, Entry *e, Filter *flist );
  39 static int      test_substrings_filter( Operation *op, Entry *e, Filter *f);
  40 static int      test_ava_filter( Operation *op,
  41         Entry *e, AttributeAssertion *ava, int type );
  42 static int      test_mra_filter( Operation *op,
  43         Entry *e, MatchingRuleAssertion *mra );
  44 static int      test_presence_filter( Operation *op,
  45         Entry *e, AttributeDescription *desc );
  46
  47
  48 /*
  49  * test_filter - test a filter against a single entry.
  50  * returns:
  51  *              LDAP_COMPARE_TRUE               filter matched
  52  *              LDAP_COMPARE_FALSE              filter did not match
  53  *              SLAPD_COMPARE_UNDEFINED filter is undefined
  54  *      or an ldap result code indicating error
  55  */
  56
  57 int
  58 test_filter(
  59     Operation   *op,
  60     Entry       *e,
  61     Filter      *f )
  62 {
  63         int     rc;
  64         Debug( LDAP_DEBUG_FILTER, "=> test_filter\n", 0, 0, 0 );
  65
  66         switch ( f->f_choice ) {
  67         case SLAPD_FILTER_COMPUTED:
  68                 Debug( LDAP_DEBUG_FILTER, "    COMPUTED %s (%d)\n",
  69                         f->f_result == LDAP_COMPARE_FALSE ? "false" :
  70                         f->f_result == LDAP_COMPARE_TRUE ? "true" :
  71                         f->f_result == SLAPD_COMPARE_UNDEFINED ? "undefined" : "error",
  72                         f->f_result, 0 );
  73
  74                 rc = f->f_result;
  75                 break;
  76
  77         case LDAP_FILTER_EQUALITY:
  78                 Debug( LDAP_DEBUG_FILTER, "    EQUALITY\n", 0, 0, 0 );
  79                 rc = test_ava_filter( op, e, f->f_ava, LDAP_FILTER_EQUALITY );
  80                 break;
  81
  82         case LDAP_FILTER_SUBSTRINGS:
  83                 Debug( LDAP_DEBUG_FILTER, "    SUBSTRINGS\n", 0, 0, 0 );
  84                 rc = test_substrings_filter( op, e, f );
  85                 break;
  86
  87         case LDAP_FILTER_GE:
  88                 Debug( LDAP_DEBUG_FILTER, "    GE\n", 0, 0, 0 );
  89                 rc = test_ava_filter( op, e, f->f_ava, LDAP_FILTER_GE );
  90                 break;
  91
  92         case LDAP_FILTER_LE:
  93                 Debug( LDAP_DEBUG_FILTER, "    LE\n", 0, 0, 0 );
  94                 rc = test_ava_filter( op, e, f->f_ava, LDAP_FILTER_LE );
  95                 break;
  96
  97         case LDAP_FILTER_PRESENT:
  98                 Debug( LDAP_DEBUG_FILTER, "    PRESENT\n", 0, 0, 0 );
  99                 rc = test_presence_filter( op, e, f->f_desc );
 100                 break;
 101
 102         case LDAP_FILTER_APPROX:
 103                 Debug( LDAP_DEBUG_FILTER, "    APPROX\n", 0, 0, 0 );
 104                 rc = test_ava_filter( op, e, f->f_ava, LDAP_FILTER_APPROX );
 105                 break;
 106
 107         case LDAP_FILTER_AND:
 108                 Debug( LDAP_DEBUG_FILTER, "    AND\n", 0, 0, 0 );
 109                 rc = test_filter_and( op, e, f->f_and );
 110                 break;
 111
 112         case LDAP_FILTER_OR:
 113                 Debug( LDAP_DEBUG_FILTER, "    OR\n", 0, 0, 0 );
 114                 rc = test_filter_or( op, e, f->f_or );
 115                 break;
 116
 117         case LDAP_FILTER_NOT:
 118                 Debug( LDAP_DEBUG_FILTER, "    NOT\n", 0, 0, 0 );
 119                 rc = test_filter( op, e, f->f_not );
 120
 121                 /* Flip true to false and false to true
 122                  * but leave Undefined alone.
 123                  */
 124                 switch( rc ) {
 125                 case LDAP_COMPARE_TRUE:
 126                         rc = LDAP_COMPARE_FALSE;
 127                         break;
 128                 case LDAP_COMPARE_FALSE:
 129                         rc = LDAP_COMPARE_TRUE;
 130                         break;
 131                 }
 132                 break;
 133
 134         case LDAP_FILTER_EXT:
 135                 Debug( LDAP_DEBUG_FILTER, "    EXT\n", 0, 0, 0 );
 136                 rc = test_mra_filter( op, e, f->f_mra );
 137                 break;
 138
 139         default:
 140                 Debug( LDAP_DEBUG_ANY, "    unknown filter type %lu\n",
 141                     f->f_choice, 0, 0 );
 142                 rc = LDAP_PROTOCOL_ERROR;
 143         }
 144
 145         Debug( LDAP_DEBUG_FILTER, "<= test_filter %d\n", rc, 0, 0 );
 146         return( rc );
 147 }
 148
 149 static int test_mra_filter(
 150         Operation *op,
 151         Entry *e,
 152         MatchingRuleAssertion *mra )
 153 {
 154         Attribute       *a;
 155         void            *memctx;
 156         BER_MEMFREE_FN  *memfree;
 157
 158         if ( op == NULL ) {
 159                 memctx = NULL;
 160                 memfree = slap_sl_free;
 161         } else {
 162                 memctx = op->o_tmpmemctx;
 163                 memfree = op->o_tmpfree;
 164         }
 165
 166         if ( mra->ma_desc ) {
 167                 /*
 168                  * if ma_desc is available, then we're filtering for
 169                  * one attribute, and SEARCH permissions can be checked
 170                  * directly.
 171                  */
 172                 if( !access_allowed( op, e,
 173                         mra->ma_desc, &mra->ma_value, ACL_SEARCH, NULL ) )
 174                 {
 175                         return LDAP_INSUFFICIENT_ACCESS;
 176                 }
 177
 178                 if ( mra->ma_desc == slap_schema.si_ad_entryDN ) {
 179                         int ret, rc;
 180                         const char *text;
 181
 182                         rc = value_match( &ret, slap_schema.si_ad_entryDN, mra->ma_rule,
 183                                 0, &e->e_nname, &mra->ma_value, &text );
 184
 185
 186                         if( rc != LDAP_SUCCESS ) return rc;
 187                         if ( ret == 0 ) return LDAP_COMPARE_TRUE;
 188                         return LDAP_COMPARE_FALSE;
 189                 }
 190
 191                 for(a = attrs_find( e->e_attrs, mra->ma_desc );
 192                         a != NULL;
 193                         a = attrs_find( a->a_next, mra->ma_desc ) )
 194                 {
 195                         struct berval *bv;
 196                         /* If ma_rule is not the same as the attribute's
 197                          * normal rule, then we can't use the a_nvals.
 198                          */
 199                         if (mra->ma_rule == a->a_desc->ad_type->sat_equality) {
 200                                 bv = a->a_nvals;
 201                         } else {
 202                                 bv = a->a_vals;
 203                         }
 204
 205                         for ( ; bv->bv_val != NULL; bv++ ) {
 206                                 int ret;
 207                                 int rc;
 208                                 const char *text;
 209
 210 #ifdef LDAP_COMP_MATCH
 211                                 /* Component Matching */
 212                                 if( mra->ma_cf &&
 213                                         mra->ma_rule->smr_usage & SLAP_MR_COMPONENT )
 214                                 {
 215                                         rc = value_match( &ret, a->a_desc, mra->ma_rule, 0,
 216                                                 (struct berval *)a,(void*) mra , &text );
 217                                 } else
 218 #endif
 219                                 {
 220                                         rc = value_match( &ret, a->a_desc, mra->ma_rule, 0,
 221                                                 bv, &mra->ma_value, &text );
 222                                 }
 223
 224                                 if( rc != LDAP_SUCCESS ) return rc;
 225                                 if ( ret == 0 ) return LDAP_COMPARE_TRUE;
 226                         }
 227                 }
 228
 229         } else {
 230                 /*
 231                  * No attribute description: test all
 232                  */
 233                 for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
 234                         struct berval   *bv, value;
 235                         const char      *text = NULL;
 236                         int             rc;
 237
 238                         /* check if matching is appropriate */
 239                         if ( !mr_usable_with_at( mra->ma_rule, a->a_desc->ad_type )) {
 240                                 continue;
 241                         }
 242
 243                         /* normalize for equality */
 244                         rc = asserted_value_validate_normalize( a->a_desc, mra->ma_rule,
 245                                 SLAP_MR_EXT|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,
 246                                 &mra->ma_value, &value, &text, memctx );
 247                         if ( rc != LDAP_SUCCESS ) continue;
 248
 249                         /* check search access */
 250                         if ( !access_allowed( op, e,
 251                                 a->a_desc, &value, ACL_SEARCH, NULL ) ) {
 252                                 memfree( value.bv_val, memctx );
 253                                 continue;
 254                         }
 255
 256                         /* check match */
 257                         if (mra->ma_rule == a->a_desc->ad_type->sat_equality) {
 258                                 bv = a->a_nvals;
 259                         } else {
 260                                 bv = a->a_vals;
 261                         }
 262
 263                         for ( ; bv->bv_val != NULL; bv++ ) {
 264                                 int ret;
 265
 266 #ifdef LDAP_COMP_MATCH
 267                                 /* Component Matching */
 268                                 if( mra->ma_cf &&
 269                                         mra->ma_rule->smr_usage & SLAP_MR_COMPONENT)
 270                                 {
 271                                         rc = value_match( &ret, a->a_desc, mra->ma_rule, 0,
 272                                                 (struct berval*)a, (void*)mra, &text );
 273                                 } else
 274 #endif
 275                                 {
 276                                         rc = value_match( &ret, a->a_desc, mra->ma_rule, 0,
 277                                                 bv, &value, &text );
 278                                 }
 279
 280                                 if( rc != LDAP_SUCCESS ) break;
 281
 282                                 if ( ret == 0 ) {
 283                                         rc = LDAP_COMPARE_TRUE;
 284                                         break;
 285                                 }
 286                         }
 287                         memfree( value.bv_val, memctx );
 288                         if ( rc != LDAP_SUCCESS ) return rc;
 289                 }
 290         }
 291
 292         /* check attrs in DN AVAs if required */
 293         if ( mra->ma_dnattrs ) {
 294                 LDAPDN          dn = NULL;
 295                 int             iRDN, iAVA;
 296                 int             rc;
 297
 298                 /* parse and pretty the dn */
 299                 rc = dnPrettyDN( NULL, &e->e_name, &dn, memctx );
 300                 if ( rc != LDAP_SUCCESS ) {
 301                         return LDAP_INVALID_SYNTAX;
 302                 }
 303
 304                 /* for each AVA of each RDN ... */
 305                 for ( iRDN = 0; dn[ iRDN ]; iRDN++ ) {
 306                         LDAPRDN         rdn = dn[ iRDN ];
 307
 308                         for ( iAVA = 0; rdn[ iAVA ]; iAVA++ ) {
 309                                 LDAPAVA         *ava = rdn[ iAVA ];
 310                                 struct berval   *bv = &ava->la_value, value;
 311                                 AttributeDescription *ad =
 312                                         (AttributeDescription *)ava->la_private;
 313                                 int ret;
 314                                 const char *text;
 315
 316                                 assert( ad );
 317
 318                                 if ( mra->ma_desc ) {
 319                                         /* have a mra type? check for subtype */
 320                                         if ( !is_ad_subtype( ad, mra->ma_desc ) ) {
 321                                                 continue;
 322                                         }
 323                                         value = mra->ma_value;
 324
 325                                 } else {
 326                                         const char      *text = NULL;
 327
 328                                         /* check if matching is appropriate */
 329                                         if ( !mr_usable_with_at( mra->ma_rule, ad->ad_type )) {
 330                                                 continue;
 331                                         }
 332
 333                                         /* normalize for equality */
 334                                         rc = asserted_value_validate_normalize( ad,
 335                                                 mra->ma_rule,
 336                                                 SLAP_MR_EXT|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,
 337                                                 &mra->ma_value, &value, &text, memctx );
 338                                         if ( rc != LDAP_SUCCESS ) continue;
 339
 340                                         /* check search access */
 341                                         if ( !access_allowed( op, e,
 342                                                 ad, &value, ACL_SEARCH, NULL ) )
 343                                         {
 344                                                 memfree( value.bv_val, memctx );
 345                                                 continue;
 346                                         }
 347                                 }
 348
 349                                 /* check match */
 350                                 rc = value_match( &ret, ad, mra->ma_rule, 0,
 351                                         bv, &value, &text );
 352                                 if ( value.bv_val != mra->ma_value.bv_val ) {
 353                                         memfree( value.bv_val, memctx );
 354                                 }
 355
 356                                 if ( rc == LDAP_SUCCESS && ret == 0 ) rc = LDAP_COMPARE_TRUE;
 357
 358                                 if( rc != LDAP_SUCCESS ) {
 359                                         ldap_dnfree_x( dn, memctx );
 360                                         return rc;
 361                                 }
 362                         }
 363                 }
 364                 ldap_dnfree_x( dn, memctx );
 365         }
 366
 367         return LDAP_COMPARE_FALSE;
 368 }
 369
 370 static int
 371 test_ava_filter(
 372         Operation       *op,
 373         Entry           *e,
 374         AttributeAssertion *ava,
 375         int             type )
 376 {
 377         int rc;
 378         Attribute       *a;
 379
 380         if ( !access_allowed( op, e,
 381                 ava->aa_desc, &ava->aa_value, ACL_SEARCH, NULL ) )
 382         {
 383                 return LDAP_INSUFFICIENT_ACCESS;
 384         }
 385
 386         if ( ava->aa_desc == slap_schema.si_ad_hasSubordinates
 387                 && op && op->o_bd && op->o_bd->be_has_subordinates )
 388         {
 389                 int     hasSubordinates;
 390                 struct berval hs;
 391
 392                 if( type != LDAP_FILTER_EQUALITY &&
 393                         type != LDAP_FILTER_APPROX )
 394                 {
 395                         /* No other match is allowed */
 396                         return LDAP_INAPPROPRIATE_MATCHING;
 397                 }
 398
 399                 if ( op->o_bd->be_has_subordinates( op, e, &hasSubordinates ) !=
 400                         LDAP_SUCCESS )
 401                 {
 402                         return LDAP_OTHER;
 403                 }
 404
 405                 if ( hasSubordinates == LDAP_COMPARE_TRUE ) {
 406                         hs = slap_true_bv;
 407
 408                 } else if ( hasSubordinates == LDAP_COMPARE_FALSE ) {
 409                         hs = slap_false_bv;
 410
 411                 } else {
 412                         return LDAP_OTHER;
 413                 }
 414
 415                 if ( bvmatch( &ava->aa_value, &hs ) ) return LDAP_COMPARE_TRUE;
 416                 return LDAP_COMPARE_FALSE;
 417         }
 418
 419         if ( ava->aa_desc == slap_schema.si_ad_entryDN ) {
 420                 MatchingRule *mr;
 421                 int rc, match;
 422                 const char *text;
 423
 424                 if( type != LDAP_FILTER_EQUALITY &&
 425                         type != LDAP_FILTER_APPROX )
 426                 {
 427                         /* No other match is allowed */
 428                         return LDAP_INAPPROPRIATE_MATCHING;
 429                 }
 430
 431                 mr = slap_schema.si_ad_entryDN->ad_type->sat_equality;
 432                 assert( mr );
 433
 434                 rc = value_match( &match, slap_schema.si_ad_entryDN, mr, 0,
 435                         &e->e_nname, &ava->aa_value, &text );
 436
 437                 if( rc != LDAP_SUCCESS ) return rc;
 438                 if( match == 0 ) return LDAP_COMPARE_TRUE;
 439                 return LDAP_COMPARE_FALSE;
 440         }
 441
 442         rc = LDAP_COMPARE_FALSE;
 443
 444         for(a = attrs_find( e->e_attrs, ava->aa_desc );
 445                 a != NULL;
 446                 a = attrs_find( a->a_next, ava->aa_desc ) )
 447         {
 448                 MatchingRule *mr;
 449                 struct berval *bv;
 450
 451                 if (( ava->aa_desc != a->a_desc ) && !access_allowed( op,
 452                         e, a->a_desc, &ava->aa_value, ACL_SEARCH, NULL ))
 453                 {
 454                         rc = LDAP_INSUFFICIENT_ACCESS;
 455                         continue;
 456                 }
 457
 458                 switch ( type ) {
 459                 case LDAP_FILTER_APPROX:
 460                         mr = a->a_desc->ad_type->sat_approx;
 461                         if( mr != NULL ) break;
 462
 463                         /* use EQUALITY matching rule if no APPROX rule */
 464
 465                 case LDAP_FILTER_EQUALITY:
 466                         mr = a->a_desc->ad_type->sat_equality;
 467                         break;
 468
 469                 case LDAP_FILTER_GE:
 470                 case LDAP_FILTER_LE:
 471                         mr = a->a_desc->ad_type->sat_ordering;
 472                         break;
 473
 474                 default:
 475                         mr = NULL;
 476                 }
 477
 478                 if( mr == NULL ) {
 479                         rc = LDAP_INAPPROPRIATE_MATCHING;
 480                         continue;
 481                 }
 482
 483                 for ( bv = a->a_nvals; bv->bv_val != NULL; bv++ ) {
 484                         int ret, match;
 485                         const char *text;
 486
 487                         ret = value_match( &match, a->a_desc, mr, 0,
 488                                 bv, &ava->aa_value, &text );
 489
 490                         if( ret != LDAP_SUCCESS ) {
 491                                 rc = ret;
 492                                 break;
 493                         }
 494
 495                         switch ( type ) {
 496                         case LDAP_FILTER_EQUALITY:
 497                         case LDAP_FILTER_APPROX:
 498                                 if ( match == 0 ) return LDAP_COMPARE_TRUE;
 499                                 break;
 500
 501                         case LDAP_FILTER_GE:
 502                                 if ( match >= 0 ) return LDAP_COMPARE_TRUE;
 503                                 break;
 504
 505                         case LDAP_FILTER_LE:
 506                                 if ( match <= 0 ) return LDAP_COMPARE_TRUE;
 507                                 break;
 508                         }
 509                 }
 510         }
 511
 512         return rc;
 513 }
 514
 515
 516 static int
 517 test_presence_filter(
 518         Operation       *op,
 519         Entry           *e,
 520         AttributeDescription *desc )
 521 {
 522         Attribute       *a;
 523         int rc;
 524
 525         if ( !access_allowed( op, e, desc, NULL, ACL_SEARCH, NULL ) ) {
 526                 return LDAP_INSUFFICIENT_ACCESS;
 527         }
 528
 529         if ( desc == slap_schema.si_ad_hasSubordinates ) {
 530                 /*
 531                  * XXX: fairly optimistic: if the function is defined,
 532                  * then PRESENCE must succeed, because hasSubordinate
 533                  * is boolean-valued; I think we may live with this
 534                  * simplification by now
 535                  */
 536                 if ( op && op->o_bd && op->o_bd->be_has_subordinates ) {
 537                         return LDAP_COMPARE_TRUE;
 538                 }
 539
 540                 return LDAP_COMPARE_FALSE;
 541         }
 542
 543         if ( desc == slap_schema.si_ad_entryDN ||
 544                 desc == slap_schema.si_ad_subschemaSubentry )
 545         {
 546                 /* entryDN and subschemaSubentry are always present */
 547                 return LDAP_COMPARE_TRUE;
 548         }
 549
 550         rc = LDAP_COMPARE_FALSE;
 551
 552         for(a = attrs_find( e->e_attrs, desc );
 553                 a != NULL;
 554                 a = attrs_find( a->a_next, desc ) )
 555         {
 556                 if (( desc != a->a_desc ) && !access_allowed( op,
 557                         e, a->a_desc, NULL, ACL_SEARCH, NULL ))
 558                 {
 559                         rc = LDAP_INSUFFICIENT_ACCESS;
 560                         continue;
 561                 }
 562
 563                 rc = LDAP_COMPARE_TRUE;
 564                 break;
 565         }
 566
 567         return rc;
 568 }
 569
 570
 571 static int
 572 test_filter_and(
 573         Operation       *op,
 574         Entry   *e,
 575         Filter  *flist )
 576 {
 577         Filter  *f;
 578         int rtn = LDAP_COMPARE_TRUE; /* True if empty */
 579
 580         Debug( LDAP_DEBUG_FILTER, "=> test_filter_and\n", 0, 0, 0 );
 581
 582         for ( f = flist; f != NULL; f = f->f_next ) {
 583                 int rc = test_filter( op, e, f );
 584
 585                 if ( rc == LDAP_COMPARE_FALSE ) {
 586                         /* filter is False */
 587                         rtn = rc;
 588                         break;
 589                 }
 590
 591                 if ( rc != LDAP_COMPARE_TRUE ) {
 592                         /* filter is Undefined unless later elements are False */
 593                         rtn = rc;
 594                 }
 595         }
 596
 597         Debug( LDAP_DEBUG_FILTER, "<= test_filter_and %d\n", rtn, 0, 0 );
 598
 599         return rtn;
 600 }
 601
 602 static int
 603 test_filter_or(
 604         Operation       *op,
 605         Entry   *e,
 606         Filter  *flist )
 607 {
 608         Filter  *f;
 609         int rtn = LDAP_COMPARE_FALSE; /* False if empty */
 610
 611         Debug( LDAP_DEBUG_FILTER, "=> test_filter_or\n", 0, 0, 0 );
 612
 613         for ( f = flist; f != NULL; f = f->f_next ) {
 614                 int rc = test_filter( op, e, f );
 615
 616                 if ( rc == LDAP_COMPARE_TRUE ) {
 617                         /* filter is True */
 618                         rtn = rc;
 619                         break;
 620                 }
 621
 622                 if ( rc != LDAP_COMPARE_FALSE ) {
 623                         /* filter is Undefined unless later elements are True */
 624                         rtn = rc;
 625                 }
 626         }
 627
 628         Debug( LDAP_DEBUG_FILTER, "<= test_filter_or %d\n", rtn, 0, 0 );
 629         return rtn;
 630 }
 631
 632
 633 static int
 634 test_substrings_filter(
 635         Operation       *op,
 636         Entry   *e,
 637         Filter  *f )
 638 {
 639         Attribute       *a;
 640         int rc;
 641
 642         Debug( LDAP_DEBUG_FILTER, "begin test_substrings_filter\n", 0, 0, 0 );
 643
 644         if ( !access_allowed( op, e,
 645                 f->f_sub_desc, NULL, ACL_SEARCH, NULL ) )
 646         {
 647                 return LDAP_INSUFFICIENT_ACCESS;
 648         }
 649
 650         rc = LDAP_COMPARE_FALSE;
 651
 652         for(a = attrs_find( e->e_attrs, f->f_sub_desc );
 653                 a != NULL;
 654                 a = attrs_find( a->a_next, f->f_sub_desc ) )
 655         {
 656                 MatchingRule *mr;
 657                 struct berval *bv;
 658
 659                 if (( f->f_sub_desc != a->a_desc ) && !access_allowed( op,
 660                         e, a->a_desc, NULL, ACL_SEARCH, NULL ))
 661                 {
 662                         rc = LDAP_INSUFFICIENT_ACCESS;
 663                         continue;
 664                 }
 665
 666                 mr = a->a_desc->ad_type->sat_substr;
 667                 if( mr == NULL ) {
 668                         rc = LDAP_INAPPROPRIATE_MATCHING;
 669                         continue;
 670                 }
 671
 672                 for ( bv = a->a_nvals; bv->bv_val != NULL; bv++ ) {
 673                         int ret, match;
 674                         const char *text;
 675
 676                         ret = value_match( &match, a->a_desc, mr, 0,
 677                                 bv, f->f_sub, &text );
 678
 679                         if( ret != LDAP_SUCCESS ) {
 680                                 rc = ret;
 681                                 break;
 682                         }
 683                         if ( match == 0 ) return LDAP_COMPARE_TRUE;
 684                 }
 685         }
 686
 687         Debug( LDAP_DEBUG_FILTER, "end test_substrings_filter %d\n",
 688                 rc, 0, 0 );
 689         return rc;
 690 }