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

   1 /* filterentry.c - apply a filter to an entry */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
   5  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   6  */
   7
   8 #include "portable.h"
   9
  10 #include <stdio.h>
  11
  12 #include <ac/socket.h>
  13 #include <ac/string.h>
  14
  15
  16 #include "slap.h"
  17
  18 static int      test_filter_and( Backend *be,
  19         Connection *conn, Operation *op,
  20         Entry *e, Filter *flist );
  21 static int      test_filter_or( Backend *be,
  22         Connection *conn, Operation *op,
  23         Entry *e, Filter *flist );
  24 static int      test_substrings_filter( Backend *be,
  25         Connection *conn, Operation *op,
  26         Entry *e, Filter *f);
  27 static int      test_ava_filter( Backend *be,
  28         Connection *conn, Operation *op,
  29         Entry *e, AttributeAssertion *ava, int type );
  30 static int      test_mra_filter( Backend *be,
  31         Connection *conn, Operation *op,
  32         Entry *e, MatchingRuleAssertion *mra );
  33 static int      test_presence_filter( Backend *be,
  34         Connection *conn, Operation *op,
  35         Entry *e, AttributeDescription *desc );
  36
  37
  38 /*
  39  * test_filter - test a filter against a single entry.
  40  * returns:
  41  *              LDAP_COMPARE_TRUE               filter matched
  42  *              LDAP_COMPARE_FALSE              filter did not match
  43  *              SLAPD_COMPARE_UNDEFINED filter is undefined
  44  *      or an ldap result code indicating error
  45  */
  46
  47 int
  48 test_filter(
  49     Backend     *be,
  50     Connection  *conn,
  51     Operation   *op,
  52     Entry       *e,
  53     Filter      *f
  54 )
  55 {
  56         int     rc;
  57
  58 #ifdef NEW_LOGGING
  59         LDAP_LOG( FILTER, ENTRY, "test_filter: begin\n", 0, 0, 0 );
  60 #else
  61         Debug( LDAP_DEBUG_FILTER, "=> test_filter\n", 0, 0, 0 );
  62 #endif
  63
  64
  65         switch ( f->f_choice ) {
  66         case SLAPD_FILTER_COMPUTED:
  67 #ifdef NEW_LOGGING
  68                 LDAP_LOG( FILTER, DETAIL1,
  69                         "test_filter:   COMPUTED %s (%d)\n",
  70                         f->f_result == LDAP_COMPARE_FALSE ? "false" :
  71                         f->f_result == LDAP_COMPARE_TRUE         ? "true"  :
  72                         f->f_result == SLAPD_COMPARE_UNDEFINED ? "undefined" :
  73                         "error", f->f_result, 0 );
  74 #else
  75                 Debug( LDAP_DEBUG_FILTER, "    COMPUTED %s (%d)\n",
  76                         f->f_result == LDAP_COMPARE_FALSE ? "false" :
  77                         f->f_result == LDAP_COMPARE_TRUE ? "true" :
  78                         f->f_result == SLAPD_COMPARE_UNDEFINED ? "undefined" : "error",
  79                         f->f_result, 0 );
  80 #endif
  81
  82                 rc = f->f_result;
  83                 break;
  84
  85         case LDAP_FILTER_EQUALITY:
  86 #ifdef NEW_LOGGING
  87                 LDAP_LOG( FILTER, DETAIL1, "test_filter:   EQUALITY\n", 0, 0, 0 );
  88 #else
  89                 Debug( LDAP_DEBUG_FILTER, "    EQUALITY\n", 0, 0, 0 );
  90 #endif
  91
  92                 rc = test_ava_filter( be, conn, op, e, f->f_ava,
  93                     LDAP_FILTER_EQUALITY );
  94                 break;
  95
  96         case LDAP_FILTER_SUBSTRINGS:
  97 #ifdef NEW_LOGGING
  98                 LDAP_LOG( FILTER, DETAIL1, "test_filter  SUBSTRINGS\n", 0, 0, 0 );
  99 #else
 100                 Debug( LDAP_DEBUG_FILTER, "    SUBSTRINGS\n", 0, 0, 0 );
 101 #endif
 102
 103                 rc = test_substrings_filter( be, conn, op, e, f );
 104                 break;
 105
 106         case LDAP_FILTER_GE:
 107                 rc = test_ava_filter( be, conn, op, e, f->f_ava,
 108                     LDAP_FILTER_GE );
 109                 break;
 110
 111         case LDAP_FILTER_LE:
 112                 rc = test_ava_filter( be, conn, op, e, f->f_ava,
 113                     LDAP_FILTER_LE );
 114                 break;
 115
 116         case LDAP_FILTER_PRESENT:
 117 #ifdef NEW_LOGGING
 118                 LDAP_LOG( FILTER, DETAIL1, "test_filter:        PRESENT\n", 0, 0, 0 );
 119 #else
 120                 Debug( LDAP_DEBUG_FILTER, "    PRESENT\n", 0, 0, 0 );
 121 #endif
 122
 123                 rc = test_presence_filter( be, conn, op, e, f->f_desc );
 124                 break;
 125
 126         case LDAP_FILTER_APPROX:
 127 #ifdef NEW_LOGGING
 128                 LDAP_LOG( FILTER, DETAIL1, "test_filter: APPROX\n", 0, 0, 0 );
 129 #else
 130                 Debug( LDAP_DEBUG_FILTER, "    APPROX\n", 0, 0, 0 );
 131 #endif
 132                 rc = test_ava_filter( be, conn, op, e, f->f_ava,
 133                     LDAP_FILTER_APPROX );
 134                 break;
 135
 136         case LDAP_FILTER_AND:
 137 #ifdef NEW_LOGGING
 138                 LDAP_LOG( FILTER, DETAIL1, "test_filter:  AND\n", 0, 0, 0 );
 139 #else
 140                 Debug( LDAP_DEBUG_FILTER, "    AND\n", 0, 0, 0 );
 141 #endif
 142
 143                 rc = test_filter_and( be, conn, op, e, f->f_and );
 144                 break;
 145
 146         case LDAP_FILTER_OR:
 147 #ifdef NEW_LOGGING
 148                 LDAP_LOG( FILTER, DETAIL1, "test_filter:        OR\n", 0, 0, 0 );
 149 #else
 150                 Debug( LDAP_DEBUG_FILTER, "    OR\n", 0, 0, 0 );
 151 #endif
 152
 153                 rc = test_filter_or( be, conn, op, e, f->f_or );
 154                 break;
 155
 156         case LDAP_FILTER_NOT:
 157 #ifdef NEW_LOGGING
 158                 LDAP_LOG( FILTER, DETAIL1, "test_filter:        NOT\n", 0, 0, 0 );
 159 #else
 160                 Debug( LDAP_DEBUG_FILTER, "    NOT\n", 0, 0, 0 );
 161 #endif
 162
 163                 rc = test_filter( be, conn, op, e, f->f_not );
 164
 165                 /* Flip true to false and false to true
 166                  * but leave Undefined alone.
 167                  */
 168                 switch( rc ) {
 169                 case LDAP_COMPARE_TRUE:
 170                         rc = LDAP_COMPARE_FALSE;
 171                         break;
 172                 case LDAP_COMPARE_FALSE:
 173                         rc = LDAP_COMPARE_TRUE;
 174                         break;
 175                 }
 176                 break;
 177
 178         case LDAP_FILTER_EXT:
 179 #ifdef NEW_LOGGING
 180                 LDAP_LOG( FILTER, DETAIL1, "test_filter:        EXT\n", 0, 0, 0 );
 181 #else
 182                 Debug( LDAP_DEBUG_FILTER, "    EXT\n", 0, 0, 0 );
 183 #endif
 184
 185                 rc = test_mra_filter( be, conn, op, e, f->f_mra );
 186                 break;
 187
 188         default:
 189 #ifdef NEW_LOGGING
 190                 LDAP_LOG( FILTER, INFO,
 191                         "test_filter:  unknown filter type %lu\n", f->f_choice, 0, 0 );
 192 #else
 193                 Debug( LDAP_DEBUG_ANY, "    unknown filter type %lu\n",
 194                     f->f_choice, 0, 0 );
 195 #endif
 196
 197                 rc = LDAP_PROTOCOL_ERROR;
 198         }
 199
 200 #ifdef NEW_LOGGING
 201         LDAP_LOG( FILTER, RESULTS, "test_filter:  return=%d\n", rc, 0, 0 );
 202 #else
 203         Debug( LDAP_DEBUG_FILTER, "<= test_filter %d\n", rc, 0, 0 );
 204 #endif
 205
 206         return( rc );
 207 }
 208
 209 static int test_mra_filter(
 210         Backend *be,
 211         Connection *conn,
 212         Operation *op,
 213         Entry *e,
 214         MatchingRuleAssertion *mra )
 215 {
 216         Attribute       *a;
 217
 218         if ( mra->ma_desc ) {
 219                 /*
 220                  * if ma_desc is available, then we're filtering for
 221                  * one attribute, and SEARCH permissions can be checked
 222                  * directly.
 223                  */
 224                 if( !access_allowed( be, conn, op, e,
 225                         mra->ma_desc, &mra->ma_value, ACL_SEARCH, NULL ) )
 226                 {
 227                         return LDAP_INSUFFICIENT_ACCESS;
 228                 }
 229
 230                 for(a = attrs_find( e->e_attrs, mra->ma_desc );
 231                         a != NULL;
 232                         a = attrs_find( a->a_next, mra->ma_desc ) )
 233                 {
 234                         struct berval *bv;
 235 #ifdef SLAP_NVALUES
 236                         bv = a->a_nvals;
 237 #else
 238                         bv = a->a_vals;
 239 #endif
 240                         for ( ; bv->bv_val != NULL; bv++ )
 241                         {
 242                                 int ret;
 243                                 int rc;
 244                                 const char *text;
 245
 246                                 rc = value_match( &ret, a->a_desc, mra->ma_rule, 0,
 247                                         bv, &mra->ma_value, &text );
 248
 249                                 if( rc != LDAP_SUCCESS ) {
 250                                         return rc;
 251                                 }
 252
 253                                 if ( ret == 0 ) {
 254                                         return LDAP_COMPARE_TRUE;
 255                                 }
 256                         }
 257                 }
 258         } else {
 259
 260                 /*
 261                  * No attribute description: test all
 262                  */
 263                 for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
 264                         struct berval   *bv, value;
 265                         const char      *text = NULL;
 266                         int             rc;
 267
 268                         /* check if matching is appropriate */
 269                         if ( !mr_usable_with_at( mra->ma_rule, a->a_desc->ad_type )) {
 270                                 continue;
 271                         }
 272
 273                         /* normalize for equality */
 274 #ifdef SLAP_NVALUES
 275                         rc = asserted_value_validate_normalize( a->a_desc, mra->ma_rule,
 276                                 SLAP_MR_EXT|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,
 277                                 &mra->ma_value, &value, &text );
 278 #else
 279                         rc = value_validate_normalize( a->a_desc,
 280                                 SLAP_MR_EQUALITY,
 281                                 &mra->ma_value, &value, &text );
 282 #endif
 283                         if ( rc != LDAP_SUCCESS ) {
 284                                 continue;
 285                         }
 286
 287                         /* check search access */
 288                         if ( !access_allowed( be, conn, op, e,
 289                                 a->a_desc, &value, ACL_SEARCH, NULL ) ) {
 290                                 continue;
 291                         }
 292
 293                         /* check match */
 294 #ifdef SLAP_NVALUES
 295                         for ( bv = a->a_nvals; bv->bv_val != NULL; bv++ )
 296 #else
 297                         for ( bv = a->a_vals; bv->bv_val != NULL; bv++ )
 298 #endif
 299                         {
 300                                 int ret;
 301                                 int rc;
 302
 303                                 rc = value_match( &ret, a->a_desc, mra->ma_rule, 0,
 304                                         bv, &value, &text );
 305
 306                                 if( rc != LDAP_SUCCESS ) {
 307                                         return rc;
 308                                 }
 309
 310                                 if ( ret == 0 ) {
 311                                         return LDAP_COMPARE_TRUE;
 312                                 }
 313                         }
 314                 }
 315         }
 316
 317         /* check attrs in DN AVAs if required */
 318         if ( mra->ma_dnattrs ) {
 319                 LDAPDN          *dn = NULL;
 320                 int             iRDN, iAVA;
 321                 int             rc;
 322
 323                 /* parse and pretty the dn */
 324                 rc = dnPrettyDN( NULL, &e->e_name, &dn );
 325                 if ( rc != LDAP_SUCCESS ) {
 326                         return LDAP_INVALID_SYNTAX;
 327                 }
 328
 329                 /* for each AVA of each RDN ... */
 330                 for ( iRDN = 0; dn[ 0 ][ iRDN ]; iRDN++ ) {
 331                         LDAPRDN         *rdn = dn[ 0 ][ iRDN ];
 332
 333                         for ( iAVA = 0; rdn[ 0 ][ iAVA ]; iAVA++ ) {
 334                                 LDAPAVA         *ava = rdn[ 0 ][ iAVA ];
 335                                 struct berval   *bv = &ava->la_value, value;
 336                                 AttributeDescription *ad = (AttributeDescription *)ava->la_private;
 337                                 int ret;
 338                                 int rc;
 339                                 const char *text;
 340
 341                                 assert( ad );
 342
 343                                 if ( mra->ma_desc ) {
 344                                         /* have a mra type? check for subtype */
 345                                         if ( !is_ad_subtype( ad, mra->ma_desc ) ) {
 346                                                 continue;
 347                                         }
 348                                         value = mra->ma_value;
 349
 350                                 } else {
 351                                         const char      *text = NULL;
 352
 353                                         /* check if matching is appropriate */
 354                                         if ( !mr_usable_with_at( mra->ma_rule, ad->ad_type )) {
 355                                                 continue;
 356                                         }
 357
 358                                         /* normalize for equality */
 359 #ifdef SLAP_NVALUES
 360                                         rc = asserted_value_validate_normalize( ad,
 361                                                 mra->ma_rule,
 362                                                 SLAP_MR_EXT|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,
 363                                                 &mra->ma_value, &value, &text );
 364 #else
 365                                         rc = value_validate_normalize( ad, SLAP_MR_EQUALITY,
 366                                                 &mra->ma_value, &value, &text );
 367 #endif
 368                                         if ( rc != LDAP_SUCCESS ) {
 369                                                 continue;
 370                                         }
 371
 372                                         /* check search access */
 373                                         if ( !access_allowed( be, conn, op, e,
 374                                                 ad, &value, ACL_SEARCH, NULL ) ) {
 375                                                 continue;
 376                                         }
 377                                 }
 378
 379                                 /* check match */
 380                                 rc = value_match( &ret, ad, mra->ma_rule, 0,
 381                                         bv, &value, &text );
 382
 383                                 if( rc != LDAP_SUCCESS ) {
 384                                         ldap_dnfree( dn );
 385                                         return rc;
 386                                 }
 387
 388                                 if ( ret == 0 ) {
 389                                         ldap_dnfree( dn );
 390                                         return LDAP_COMPARE_TRUE;
 391                                 }
 392                         }
 393                 }
 394         }
 395
 396         return LDAP_COMPARE_FALSE;
 397 }
 398
 399 static int
 400 test_ava_filter(
 401     Backend     *be,
 402     Connection  *conn,
 403     Operation   *op,
 404     Entry       *e,
 405         AttributeAssertion *ava,
 406     int         type
 407 )
 408 {
 409         Attribute       *a;
 410
 411         if ( !access_allowed( be, conn, op, e,
 412                 ava->aa_desc, &ava->aa_value, ACL_SEARCH, NULL ) )
 413         {
 414                 return LDAP_INSUFFICIENT_ACCESS;
 415         }
 416
 417         for(a = attrs_find( e->e_attrs, ava->aa_desc );
 418                 a != NULL;
 419                 a = attrs_find( a->a_next, ava->aa_desc ) )
 420         {
 421                 MatchingRule *mr;
 422                 struct berval *bv;
 423
 424                 switch ( type ) {
 425                 case LDAP_FILTER_APPROX:
 426                         mr = a->a_desc->ad_type->sat_approx;
 427                         if( mr != NULL ) break;
 428
 429                         /* use EQUALITY matching rule if no APPROX rule */
 430
 431                 case LDAP_FILTER_EQUALITY:
 432                         mr = a->a_desc->ad_type->sat_equality;
 433                         break;
 434
 435                 case LDAP_FILTER_GE:
 436                 case LDAP_FILTER_LE:
 437                         mr = a->a_desc->ad_type->sat_ordering;
 438                         break;
 439
 440                 default:
 441                         mr = NULL;
 442                 }
 443
 444                 if( mr == NULL ) {
 445                         continue;
 446                 }
 447
 448 #ifdef SLAP_NVALUES
 449                 for ( bv = a->a_nvals; bv->bv_val != NULL; bv++ )
 450 #else
 451                 for ( bv = a->a_vals; bv->bv_val != NULL; bv++ )
 452 #endif
 453                 {
 454                         int ret;
 455                         int rc;
 456                         const char *text;
 457
 458                         rc = value_match( &ret, a->a_desc, mr, 0,
 459                                 bv, &ava->aa_value, &text );
 460
 461                         if( rc != LDAP_SUCCESS ) {
 462                                 return rc;
 463                         }
 464
 465                         switch ( type ) {
 466                         case LDAP_FILTER_EQUALITY:
 467                         case LDAP_FILTER_APPROX:
 468                                 if ( ret == 0 ) {
 469                                         return LDAP_COMPARE_TRUE;
 470                                 }
 471                                 break;
 472
 473                         case LDAP_FILTER_GE:
 474                                 if ( ret >= 0 ) {
 475                                         return LDAP_COMPARE_TRUE;
 476                                 }
 477                                 break;
 478
 479                         case LDAP_FILTER_LE:
 480                                 if ( ret <= 0 ) {
 481                                         return LDAP_COMPARE_TRUE;
 482                                 }
 483                                 break;
 484                         }
 485                 }
 486         }
 487
 488         if ( ava->aa_desc == slap_schema.si_ad_hasSubordinates
 489                         && be && be->be_has_subordinates ) {
 490                 int             hasSubordinates;
 491                 struct berval   hs;
 492
 493                 /*
 494                  * No other match should be allowed ...
 495                  */
 496                 assert( type == LDAP_FILTER_EQUALITY );
 497
 498                 if ( (*be->be_has_subordinates)( be, conn, op, e, &hasSubordinates ) ) {
 499                         return LDAP_OTHER;
 500                 }
 501
 502                 if ( hasSubordinates == LDAP_COMPARE_TRUE ) {
 503                         hs.bv_val = "TRUE";
 504                         hs.bv_len = sizeof( "TRUE" ) - 1;
 505
 506                 } else if ( hasSubordinates == LDAP_COMPARE_FALSE ) {
 507                         hs.bv_val = "FALSE";
 508                         hs.bv_len = sizeof( "FALSE" ) - 1;
 509
 510                 } else {
 511                         return LDAP_OTHER;
 512                 }
 513
 514                 if ( bvmatch( &ava->aa_value, &hs ) ) {
 515                         return LDAP_COMPARE_TRUE;
 516                 }
 517
 518                 return LDAP_COMPARE_FALSE;
 519         }
 520
 521         return( LDAP_COMPARE_FALSE );
 522 }
 523
 524
 525 static int
 526 test_presence_filter(
 527     Backend     *be,
 528     Connection  *conn,
 529     Operation   *op,
 530     Entry       *e,
 531         AttributeDescription *desc
 532 )
 533 {
 534         Attribute       *a;
 535
 536         if ( !access_allowed( be, conn, op, e, desc, NULL, ACL_SEARCH, NULL ) )
 537         {
 538                 return LDAP_INSUFFICIENT_ACCESS;
 539         }
 540
 541         a = attrs_find( e->e_attrs, desc );
 542
 543         if ( a == NULL && desc == slap_schema.si_ad_hasSubordinates ) {
 544
 545                 /*
 546                  * XXX: fairly optimistic: if the function is defined,
 547                  * then PRESENCE must succeed, because hasSubordinate
 548                  * is boolean-valued; I think we may live with this
 549                  * simplification by now
 550                  */
 551                 if ( be && be->be_has_subordinates ) {
 552                         return LDAP_COMPARE_TRUE;
 553                 }
 554
 555                 return LDAP_COMPARE_FALSE;
 556         }
 557
 558         return a != NULL ? LDAP_COMPARE_TRUE : LDAP_COMPARE_FALSE;
 559 }
 560
 561
 562 static int
 563 test_filter_and(
 564     Backend     *be,
 565     Connection  *conn,
 566     Operation   *op,
 567     Entry       *e,
 568     Filter      *flist
 569 )
 570 {
 571         Filter  *f;
 572         int rtn = LDAP_COMPARE_TRUE; /* True if empty */
 573
 574 #ifdef NEW_LOGGING
 575         LDAP_LOG( FILTER, ENTRY, "test_filter_and: begin\n", 0, 0, 0 );
 576 #else
 577         Debug( LDAP_DEBUG_FILTER, "=> test_filter_and\n", 0, 0, 0 );
 578 #endif
 579
 580
 581         for ( f = flist; f != NULL; f = f->f_next ) {
 582                 int rc = test_filter( be, conn, op, e, f );
 583
 584                 if ( rc == LDAP_COMPARE_FALSE ) {
 585                         /* filter is False */
 586                         rtn = rc;
 587                         break;
 588                 }
 589
 590                 if ( rc != LDAP_COMPARE_TRUE ) {
 591                         /* filter is Undefined unless later elements are False */
 592                         rtn = rc;
 593                 }
 594         }
 595
 596 #ifdef NEW_LOGGING
 597         LDAP_LOG( FILTER, RESULTS, "test_filter_and:  rc=%d\n", rtn, 0, 0 );
 598 #else
 599         Debug( LDAP_DEBUG_FILTER, "<= test_filter_and %d\n", rtn, 0, 0 );
 600 #endif
 601
 602         return rtn;
 603 }
 604
 605 static int
 606 test_filter_or(
 607     Backend     *be,
 608     Connection  *conn,
 609     Operation   *op,
 610     Entry       *e,
 611     Filter      *flist
 612 )
 613 {
 614         Filter  *f;
 615         int rtn = LDAP_COMPARE_FALSE; /* False if empty */
 616
 617 #ifdef NEW_LOGGING
 618         LDAP_LOG( FILTER, ENTRY, "test_filter_or: begin\n", 0, 0, 0 );
 619 #else
 620         Debug( LDAP_DEBUG_FILTER, "=> test_filter_or\n", 0, 0, 0 );
 621 #endif
 622
 623
 624         for ( f = flist; f != NULL; f = f->f_next ) {
 625                 int rc = test_filter( be, conn, op, e, f );
 626
 627                 if ( rc == LDAP_COMPARE_TRUE ) {
 628                         /* filter is True */
 629                         rtn = rc;
 630                         break;
 631                 }
 632
 633                 if ( rc != LDAP_COMPARE_FALSE ) {
 634                         /* filter is Undefined unless later elements are True */
 635                         rtn = rc;
 636                 }
 637         }
 638
 639 #ifdef NEW_LOGGING
 640         LDAP_LOG( FILTER, ENTRY, "test_filter_or: result=%d\n", rtn, 0, 0 );
 641 #else
 642         Debug( LDAP_DEBUG_FILTER, "<= test_filter_or %d\n", rtn, 0, 0 );
 643 #endif
 644
 645         return rtn;
 646 }
 647
 648
 649 static int
 650 test_substrings_filter(
 651     Backend     *be,
 652     Connection  *conn,
 653     Operation   *op,
 654     Entry       *e,
 655     Filter      *f
 656 )
 657 {
 658         Attribute       *a;
 659
 660 #ifdef NEW_LOGGING
 661         LDAP_LOG( FILTER, ENTRY, "test_substrings_filter: begin\n", 0, 0, 0 );
 662 #else
 663         Debug( LDAP_DEBUG_FILTER, "begin test_substrings_filter\n", 0, 0, 0 );
 664 #endif
 665
 666
 667         if ( !access_allowed( be, conn, op, e,
 668                 f->f_sub_desc, NULL, ACL_SEARCH, NULL ) )
 669         {
 670                 return LDAP_INSUFFICIENT_ACCESS;
 671         }
 672
 673         for(a = attrs_find( e->e_attrs, f->f_sub_desc );
 674                 a != NULL;
 675                 a = attrs_find( a->a_next, f->f_sub_desc ) )
 676         {
 677                 MatchingRule *mr = a->a_desc->ad_type->sat_substr;
 678                 struct berval *bv;
 679
 680                 if( mr == NULL ) {
 681                         continue;
 682                 }
 683
 684 #ifdef SLAP_NVALUES
 685                 for ( bv = a->a_nvals; bv->bv_val != NULL; bv++ )
 686 #else
 687                 for ( bv = a->a_vals; bv->bv_val != NULL; bv++ )
 688 #endif
 689                 {
 690                         int ret;
 691                         int rc;
 692                         const char *text;
 693
 694                         rc = value_match( &ret, a->a_desc, mr, 0,
 695                                 bv, f->f_sub, &text );
 696
 697                         if( rc != LDAP_SUCCESS ) {
 698                                 return rc;
 699                         }
 700
 701                         if ( ret == 0 ) {
 702                                 return LDAP_COMPARE_TRUE;
 703                         }
 704                 }
 705         }
 706
 707 #ifdef NEW_LOGGING
 708         LDAP_LOG( FILTER, ENTRY, "test_substrings_filter: return FALSE\n", 0, 0, 0 );
 709 #else
 710         Debug( LDAP_DEBUG_FILTER, "end test_substrings_filter 1\n", 0, 0, 0 );
 711 #endif
 712
 713         return LDAP_COMPARE_FALSE;
 714 }