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