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

   1 /* filter.c - routines for parsing and dealing with filters */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2008 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 #include "slap.h"
  35 #include "lutil.h"
  36
  37 const Filter *slap_filter_objectClass_pres;
  38 const struct berval *slap_filterstr_objectClass_pres;
  39
  40 static int      get_filter_list(
  41         Operation *op,
  42         BerElement *ber,
  43         Filter **f,
  44         const char **text );
  45
  46 static int      get_ssa(
  47         Operation *op,
  48         BerElement *ber,
  49         Filter *f,
  50         const char **text );
  51
  52 static void simple_vrFilter2bv(
  53         Operation *op,
  54         ValuesReturnFilter *f,
  55         struct berval *fstr );
  56
  57 static int      get_simple_vrFilter(
  58         Operation *op,
  59         BerElement *ber,
  60         ValuesReturnFilter **f,
  61         const char **text );
  62
  63 int
  64 filter_init( void )
  65 {
  66         static Filter filter_objectClass_pres = { LDAP_FILTER_PRESENT };
  67         static struct berval filterstr_objectClass_pres = BER_BVC("(objectClass=*)");
  68
  69         filter_objectClass_pres.f_desc = slap_schema.si_ad_objectClass;
  70
  71         slap_filter_objectClass_pres = &filter_objectClass_pres;
  72         slap_filterstr_objectClass_pres = &filterstr_objectClass_pres;
  73
  74         return 0;
  75 }
  76
  77 void
  78 filter_destroy( void )
  79 {
  80         return;
  81 }
  82
  83 int
  84 get_filter(
  85         Operation *op,
  86         BerElement *ber,
  87         Filter **filt,
  88         const char **text )
  89 {
  90         ber_tag_t       tag;
  91         ber_len_t       len;
  92         int             err;
  93         Filter          f;
  94
  95         Debug( LDAP_DEBUG_FILTER, "begin get_filter\n", 0, 0, 0 );
  96         /*
  97          * A filter looks like this coming in:
  98          *      Filter ::= CHOICE {
  99          *              and             [0]     SET OF Filter,
 100          *              or              [1]     SET OF Filter,
 101          *              not             [2]     Filter,
 102          *              equalityMatch   [3]     AttributeValueAssertion,
 103          *              substrings      [4]     SubstringFilter,
 104          *              greaterOrEqual  [5]     AttributeValueAssertion,
 105          *              lessOrEqual     [6]     AttributeValueAssertion,
 106          *              present         [7]     AttributeType,
 107          *              approxMatch     [8]     AttributeValueAssertion,
 108          *              extensibleMatch [9]     MatchingRuleAssertion
 109          *      }
 110          *
 111          *      SubstringFilter ::= SEQUENCE {
 112          *              type               AttributeType,
 113          *              SEQUENCE OF CHOICE {
 114          *                      initial          [0] IA5String,
 115          *                      any              [1] IA5String,
 116          *                      final            [2] IA5String
 117          *              }
 118          *      }
 119          *
 120          *      MatchingRuleAssertion ::= SEQUENCE {
 121          *              matchingRule    [1] MatchingRuleId OPTIONAL,
 122          *              type            [2] AttributeDescription OPTIONAL,
 123          *              matchValue      [3] AssertionValue,
 124          *              dnAttributes    [4] BOOLEAN DEFAULT FALSE
 125          *      }
 126          *
 127          */
 128
 129         tag = ber_peek_tag( ber, &len );
 130
 131         if( tag == LBER_ERROR ) {
 132                 *text = "error decoding filter";
 133                 return SLAPD_DISCONNECT;
 134         }
 135
 136         err = LDAP_SUCCESS;
 137
 138         f.f_next = NULL;
 139         f.f_choice = tag;
 140
 141         switch ( f.f_choice ) {
 142         case LDAP_FILTER_EQUALITY:
 143                 Debug( LDAP_DEBUG_FILTER, "EQUALITY\n", 0, 0, 0 );
 144                 err = get_ava( op, ber, &f, SLAP_MR_EQUALITY, text );
 145                 if ( err != LDAP_SUCCESS ) {
 146                         break;
 147                 }
 148
 149                 assert( f.f_ava != NULL );
 150                 break;
 151
 152         case LDAP_FILTER_SUBSTRINGS:
 153                 Debug( LDAP_DEBUG_FILTER, "SUBSTRINGS\n", 0, 0, 0 );
 154                 err = get_ssa( op, ber, &f, text );
 155                 if( err != LDAP_SUCCESS ) {
 156                         break;
 157                 }
 158                 assert( f.f_sub != NULL );
 159                 break;
 160
 161         case LDAP_FILTER_GE:
 162                 Debug( LDAP_DEBUG_FILTER, "GE\n", 0, 0, 0 );
 163                 err = get_ava( op, ber, &f, SLAP_MR_ORDERING, text );
 164                 if ( err != LDAP_SUCCESS ) {
 165                         break;
 166                 }
 167                 assert( f.f_ava != NULL );
 168                 break;
 169
 170         case LDAP_FILTER_LE:
 171                 Debug( LDAP_DEBUG_FILTER, "LE\n", 0, 0, 0 );
 172                 err = get_ava( op, ber, &f, SLAP_MR_ORDERING, text );
 173                 if ( err != LDAP_SUCCESS ) {
 174                         break;
 175                 }
 176                 assert( f.f_ava != NULL );
 177                 break;
 178
 179         case LDAP_FILTER_PRESENT: {
 180                 struct berval type;
 181
 182                 Debug( LDAP_DEBUG_FILTER, "PRESENT\n", 0, 0, 0 );
 183                 if ( ber_scanf( ber, "m", &type ) == LBER_ERROR ) {
 184                         err = SLAPD_DISCONNECT;
 185                         *text = "error decoding filter";
 186                         break;
 187                 }
 188
 189                 f.f_desc = NULL;
 190                 err = slap_bv2ad( &type, &f.f_desc, text );
 191
 192                 if( err != LDAP_SUCCESS ) {
 193                         f.f_choice |= SLAPD_FILTER_UNDEFINED;
 194                         err = slap_bv2undef_ad( &type, &f.f_desc, text,
 195                                 SLAP_AD_PROXIED|SLAP_AD_NOINSERT );
 196
 197                         if ( err != LDAP_SUCCESS ) {
 198                                 /* unrecognized attribute description or other error */
 199                                 Debug( LDAP_DEBUG_ANY,
 200                                         "get_filter: conn %lu unknown attribute "
 201                                         "type=%s (%d)\n",
 202                                         op->o_connid, type.bv_val, err );
 203
 204                                 err = LDAP_SUCCESS;
 205                                 f.f_desc = slap_bv2tmp_ad( &type, op->o_tmpmemctx );
 206                         }
 207                         *text = NULL;
 208                 }
 209
 210                 assert( f.f_desc != NULL );
 211                 } break;
 212
 213         case LDAP_FILTER_APPROX:
 214                 Debug( LDAP_DEBUG_FILTER, "APPROX\n", 0, 0, 0 );
 215                 err = get_ava( op, ber, &f, SLAP_MR_EQUALITY_APPROX, text );
 216                 if ( err != LDAP_SUCCESS ) {
 217                         break;
 218                 }
 219                 assert( f.f_ava != NULL );
 220                 break;
 221
 222         case LDAP_FILTER_AND:
 223                 Debug( LDAP_DEBUG_FILTER, "AND\n", 0, 0, 0 );
 224                 err = get_filter_list( op, ber, &f.f_and, text );
 225                 if ( err != LDAP_SUCCESS ) {
 226                         break;
 227                 }
 228                 if ( f.f_and == NULL ) {
 229                         f.f_choice = SLAPD_FILTER_COMPUTED;
 230                         f.f_result = LDAP_COMPARE_TRUE;
 231                 }
 232                 /* no assert - list could be empty */
 233                 break;
 234
 235         case LDAP_FILTER_OR:
 236                 Debug( LDAP_DEBUG_FILTER, "OR\n", 0, 0, 0 );
 237                 err = get_filter_list( op, ber, &f.f_or, text );
 238                 if ( err != LDAP_SUCCESS ) {
 239                         break;
 240                 }
 241                 if ( f.f_or == NULL ) {
 242                         f.f_choice = SLAPD_FILTER_COMPUTED;
 243                         f.f_result = LDAP_COMPARE_FALSE;
 244                 }
 245                 /* no assert - list could be empty */
 246                 break;
 247
 248         case LDAP_FILTER_NOT:
 249                 Debug( LDAP_DEBUG_FILTER, "NOT\n", 0, 0, 0 );
 250                 (void) ber_skip_tag( ber, &len );
 251                 err = get_filter( op, ber, &f.f_not, text );
 252                 if ( err != LDAP_SUCCESS ) {
 253                         break;
 254                 }
 255
 256                 assert( f.f_not != NULL );
 257                 if ( f.f_not->f_choice == SLAPD_FILTER_COMPUTED ) {
 258                         int fresult = f.f_not->f_result;
 259                         f.f_choice = SLAPD_FILTER_COMPUTED;
 260                         op->o_tmpfree( f.f_not, op->o_tmpmemctx );
 261                         f.f_not = NULL;
 262
 263                         switch( fresult ) {
 264                         case LDAP_COMPARE_TRUE:
 265                                 f.f_result = LDAP_COMPARE_FALSE;
 266                                 break;
 267                         case LDAP_COMPARE_FALSE:
 268                                 f.f_result = LDAP_COMPARE_TRUE;
 269                                 break;
 270                         default: ;
 271                                 /* (!Undefined) is Undefined */
 272                         }
 273                 }
 274                 break;
 275
 276         case LDAP_FILTER_EXT:
 277                 Debug( LDAP_DEBUG_FILTER, "EXTENSIBLE\n", 0, 0, 0 );
 278
 279                 err = get_mra( op, ber, &f, text );
 280                 if ( err != LDAP_SUCCESS ) {
 281                         break;
 282                 }
 283
 284                 assert( f.f_mra != NULL );
 285                 break;
 286
 287         default:
 288                 (void) ber_scanf( ber, "x" ); /* skip the element */
 289                 Debug( LDAP_DEBUG_ANY, "get_filter: unknown filter type=%lu\n",
 290                         f.f_choice, 0, 0 );
 291                 f.f_choice = SLAPD_FILTER_COMPUTED;
 292                 f.f_result = SLAPD_COMPARE_UNDEFINED;
 293                 break;
 294         }
 295
 296         if( err != LDAP_SUCCESS && err != SLAPD_DISCONNECT ) {
 297                 /* ignore error */
 298                 *text = NULL;
 299                 f.f_choice = SLAPD_FILTER_COMPUTED;
 300                 f.f_result = SLAPD_COMPARE_UNDEFINED;
 301                 err = LDAP_SUCCESS;
 302         }
 303
 304         if ( err == LDAP_SUCCESS ) {
 305                 *filt = op->o_tmpalloc( sizeof(f), op->o_tmpmemctx );
 306                 **filt = f;
 307         }
 308
 309         Debug( LDAP_DEBUG_FILTER, "end get_filter %d\n", err, 0, 0 );
 310
 311         return( err );
 312 }
 313
 314 static int
 315 get_filter_list( Operation *op, BerElement *ber,
 316         Filter **f,
 317         const char **text )
 318 {
 319         Filter          **new;
 320         int             err;
 321         ber_tag_t       tag;
 322         ber_len_t       len;
 323         char            *last;
 324
 325         Debug( LDAP_DEBUG_FILTER, "begin get_filter_list\n", 0, 0, 0 );
 326         new = f;
 327         for ( tag = ber_first_element( ber, &len, &last );
 328                 tag != LBER_DEFAULT;
 329                 tag = ber_next_element( ber, &len, last ) )
 330         {
 331                 err = get_filter( op, ber, new, text );
 332                 if ( err != LDAP_SUCCESS )
 333                         return( err );
 334                 new = &(*new)->f_next;
 335         }
 336         *new = NULL;
 337
 338         Debug( LDAP_DEBUG_FILTER, "end get_filter_list\n", 0, 0, 0 );
 339         return( LDAP_SUCCESS );
 340 }
 341
 342 static int
 343 get_ssa(
 344         Operation *op,
 345         BerElement      *ber,
 346         Filter          *f,
 347         const char      **text )
 348 {
 349         ber_tag_t       tag;
 350         ber_len_t       len;
 351         ber_tag_t       rc;
 352         struct berval desc, value, nvalue;
 353         char            *last;
 354         SubstringsAssertion ssa;
 355
 356         *text = "error decoding filter";
 357
 358         Debug( LDAP_DEBUG_FILTER, "begin get_ssa\n", 0, 0, 0 );
 359         if ( ber_scanf( ber, "{m" /*}*/, &desc ) == LBER_ERROR ) {
 360                 return SLAPD_DISCONNECT;
 361         }
 362
 363         *text = NULL;
 364
 365         ssa.sa_desc = NULL;
 366         ssa.sa_initial.bv_val = NULL;
 367         ssa.sa_any = NULL;
 368         ssa.sa_final.bv_val = NULL;
 369
 370         rc = slap_bv2ad( &desc, &ssa.sa_desc, text );
 371
 372         if( rc != LDAP_SUCCESS ) {
 373                 f->f_choice |= SLAPD_FILTER_UNDEFINED;
 374                 rc = slap_bv2undef_ad( &desc, &ssa.sa_desc, text,
 375                         SLAP_AD_PROXIED|SLAP_AD_NOINSERT );
 376
 377                 if( rc != LDAP_SUCCESS ) {
 378                         Debug( LDAP_DEBUG_ANY,
 379                                 "get_ssa: conn %lu unknown attribute type=%s (%ld)\n",
 380                                 op->o_connid, desc.bv_val, (long) rc );
 381
 382                         ssa.sa_desc = slap_bv2tmp_ad( &desc, op->o_tmpmemctx );
 383                 }
 384         }
 385
 386         rc = LDAP_PROTOCOL_ERROR;
 387
 388         for ( tag = ber_first_element( ber, &len, &last );
 389                 tag != LBER_DEFAULT;
 390                 tag = ber_next_element( ber, &len, last ) )
 391         {
 392                 unsigned usage;
 393
 394                 rc = ber_scanf( ber, "m", &value );
 395                 if ( rc == LBER_ERROR ) {
 396                         rc = SLAPD_DISCONNECT;
 397                         goto return_error;
 398                 }
 399
 400                 if ( value.bv_val == NULL || value.bv_len == 0 ) {
 401                         rc = LDAP_INVALID_SYNTAX;
 402                         goto return_error;
 403                 }
 404
 405                 switch ( tag ) {
 406                 case LDAP_SUBSTRING_INITIAL:
 407                         if ( ssa.sa_initial.bv_val != NULL
 408                                 || ssa.sa_any != NULL
 409                                 || ssa.sa_final.bv_val != NULL )
 410                         {
 411                                 rc = LDAP_PROTOCOL_ERROR;
 412                                 goto return_error;
 413                         }
 414                         usage = SLAP_MR_SUBSTR_INITIAL;
 415                         break;
 416
 417                 case LDAP_SUBSTRING_ANY:
 418                         if ( ssa.sa_final.bv_val != NULL ) {
 419                                 rc = LDAP_PROTOCOL_ERROR;
 420                                 goto return_error;
 421                         }
 422                         usage = SLAP_MR_SUBSTR_ANY;
 423                         break;
 424
 425                 case LDAP_SUBSTRING_FINAL:
 426                         if ( ssa.sa_final.bv_val != NULL ) {
 427                                 rc = LDAP_PROTOCOL_ERROR;
 428                                 goto return_error;
 429                         }
 430
 431                         usage = SLAP_MR_SUBSTR_FINAL;
 432                         break;
 433
 434                 default:
 435                         Debug( LDAP_DEBUG_FILTER,
 436                                 "  unknown substring choice=%ld\n",
 437                                 (long) tag, 0, 0 );
 438
 439                         rc = LDAP_PROTOCOL_ERROR;
 440                         goto return_error;
 441                 }
 442
 443                 /* validate/normalize using equality matching rule validator! */
 444                 rc = asserted_value_validate_normalize(
 445                         ssa.sa_desc, ssa.sa_desc->ad_type->sat_equality,
 446                         usage, &value, &nvalue, text, op->o_tmpmemctx );
 447                 if( rc != LDAP_SUCCESS ) goto return_error;
 448
 449                 switch ( tag ) {
 450                 case LDAP_SUBSTRING_INITIAL:
 451                         Debug( LDAP_DEBUG_FILTER, "  INITIAL\n", 0, 0, 0 );
 452                         ssa.sa_initial = nvalue;
 453                         break;
 454
 455                 case LDAP_SUBSTRING_ANY:
 456                         Debug( LDAP_DEBUG_FILTER, "  ANY\n", 0, 0, 0 );
 457                         ber_bvarray_add_x( &ssa.sa_any, &nvalue, op->o_tmpmemctx );
 458                         break;
 459
 460                 case LDAP_SUBSTRING_FINAL:
 461                         Debug( LDAP_DEBUG_FILTER, "  FINAL\n", 0, 0, 0 );
 462                         ssa.sa_final = nvalue;
 463                         break;
 464
 465                 default:
 466                         assert( 0 );
 467                         slap_sl_free( nvalue.bv_val, op->o_tmpmemctx );
 468                         rc = LDAP_PROTOCOL_ERROR;
 469
 470 return_error:
 471                         Debug( LDAP_DEBUG_FILTER, "  error=%ld\n",
 472                                 (long) rc, 0, 0 );
 473                         slap_sl_free( ssa.sa_initial.bv_val, op->o_tmpmemctx );
 474                         ber_bvarray_free_x( ssa.sa_any, op->o_tmpmemctx );
 475                         if ( ssa.sa_desc->ad_flags & SLAP_DESC_TEMPORARY )
 476                                 op->o_tmpfree( ssa.sa_desc, op->o_tmpmemctx );
 477                         slap_sl_free( ssa.sa_final.bv_val, op->o_tmpmemctx );
 478                         return rc;
 479                 }
 480
 481                 *text = NULL;
 482                 rc = LDAP_SUCCESS;
 483         }
 484
 485         if( rc == LDAP_SUCCESS ) {
 486                 f->f_sub = op->o_tmpalloc( sizeof( ssa ), op->o_tmpmemctx );
 487                 *f->f_sub = ssa;
 488         }
 489
 490         Debug( LDAP_DEBUG_FILTER, "end get_ssa\n", 0, 0, 0 );
 491         return rc /* LDAP_SUCCESS */ ;
 492 }
 493
 494 void
 495 filter_free_x( Operation *op, Filter *f )
 496 {
 497         Filter  *p, *next;
 498
 499         if ( f == NULL ) {
 500                 return;
 501         }
 502
 503         f->f_choice &= SLAPD_FILTER_MASK;
 504
 505         switch ( f->f_choice ) {
 506         case LDAP_FILTER_PRESENT:
 507                 break;
 508
 509         case LDAP_FILTER_EQUALITY:
 510         case LDAP_FILTER_GE:
 511         case LDAP_FILTER_LE:
 512         case LDAP_FILTER_APPROX:
 513                 ava_free( op, f->f_ava, 1 );
 514                 break;
 515
 516         case LDAP_FILTER_SUBSTRINGS:
 517                 if ( f->f_sub_initial.bv_val != NULL ) {
 518                         op->o_tmpfree( f->f_sub_initial.bv_val, op->o_tmpmemctx );
 519                 }
 520                 ber_bvarray_free_x( f->f_sub_any, op->o_tmpmemctx );
 521                 if ( f->f_sub_final.bv_val != NULL ) {
 522                         op->o_tmpfree( f->f_sub_final.bv_val, op->o_tmpmemctx );
 523                 }
 524                 if ( f->f_sub->sa_desc->ad_flags & SLAP_DESC_TEMPORARY )
 525                         op->o_tmpfree( f->f_sub->sa_desc, op->o_tmpmemctx );
 526                 op->o_tmpfree( f->f_sub, op->o_tmpmemctx );
 527                 break;
 528
 529         case LDAP_FILTER_AND:
 530         case LDAP_FILTER_OR:
 531         case LDAP_FILTER_NOT:
 532                 for ( p = f->f_list; p != NULL; p = next ) {
 533                         next = p->f_next;
 534                         filter_free_x( op, p );
 535                 }
 536                 break;
 537
 538         case LDAP_FILTER_EXT:
 539                 mra_free( op, f->f_mra, 1 );
 540                 break;
 541
 542         case SLAPD_FILTER_COMPUTED:
 543                 break;
 544
 545         default:
 546                 Debug( LDAP_DEBUG_ANY, "filter_free: unknown filter type=%lu\n",
 547                         f->f_choice, 0, 0 );
 548                 break;
 549         }
 550
 551         op->o_tmpfree( f, op->o_tmpmemctx );
 552 }
 553
 554 void
 555 filter_free( Filter *f )
 556 {
 557         Operation op;
 558         Opheader ohdr;
 559
 560         op.o_hdr = &ohdr;
 561         op.o_tmpmemctx = slap_sl_context( f );
 562         op.o_tmpmfuncs = &slap_sl_mfuncs;
 563         filter_free_x( &op, f );
 564 }
 565
 566 void
 567 filter2bv_x( Operation *op, Filter *f, struct berval *fstr )
 568 {
 569         int             i;
 570         Filter          *p;
 571         struct berval   tmp, value;
 572         static struct berval
 573                         ber_bvfalse = BER_BVC( "(?=false)" ),
 574                         ber_bvtrue = BER_BVC( "(?=true)" ),
 575                         ber_bvundefined = BER_BVC( "(?=undefined)" ),
 576                         ber_bverror = BER_BVC( "(?=error)" ),
 577                         ber_bvunknown = BER_BVC( "(?=unknown)" ),
 578                         ber_bvnone = BER_BVC( "(?=none)" );
 579         ber_len_t       len;
 580         ber_tag_t       choice;
 581         int undef;
 582         char *sign;
 583
 584         if ( f == NULL ) {
 585                 ber_dupbv_x( fstr, &ber_bvnone, op->o_tmpmemctx );
 586                 return;
 587         }
 588
 589         undef = f->f_choice & SLAPD_FILTER_UNDEFINED;
 590         choice = f->f_choice & SLAPD_FILTER_MASK;
 591
 592         switch ( choice ) {
 593         case LDAP_FILTER_EQUALITY:
 594                 fstr->bv_len = STRLENOF("(=)");
 595                 sign = "=";
 596                 goto simple;
 597         case LDAP_FILTER_GE:
 598                 fstr->bv_len = STRLENOF("(>=)");
 599                 sign = ">=";
 600                 goto simple;
 601         case LDAP_FILTER_LE:
 602                 fstr->bv_len = STRLENOF("(<=)");
 603                 sign = "<=";
 604                 goto simple;
 605         case LDAP_FILTER_APPROX:
 606                 fstr->bv_len = STRLENOF("(~=)");
 607                 sign = "~=";
 608
 609 simple:
 610                 value = f->f_av_value;
 611                 if ( f->f_av_desc->ad_type->sat_equality &&
 612                         !undef &&
 613                         ( f->f_av_desc->ad_type->sat_equality->smr_usage & SLAP_MR_MUTATION_NORMALIZER ))
 614                 {
 615                         f->f_av_desc->ad_type->sat_equality->smr_normalize(
 616                                 (SLAP_MR_DENORMALIZE|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX),
 617                                 NULL, NULL, &f->f_av_value, &value, op->o_tmpmemctx );
 618                 }
 619
 620                 filter_escape_value_x( &value, &tmp, op->o_tmpmemctx );
 621                 /* NOTE: tmp can legitimately be NULL (meaning empty)
 622                  * since in a Filter values in AVAs are supposed
 623                  * to have been normalized, meaning that an empty value
 624                  * is legal for that attribute's syntax */
 625
 626                 fstr->bv_len += f->f_av_desc->ad_cname.bv_len + tmp.bv_len;
 627                 if ( undef )
 628                         fstr->bv_len++;
 629                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
 630
 631                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s%s%s)",
 632                         undef ? "?" : "",
 633                         f->f_av_desc->ad_cname.bv_val, sign,
 634                         tmp.bv_len ? tmp.bv_val : "" );
 635
 636                 if ( value.bv_val != f->f_av_value.bv_val ) {
 637                         ber_memfree_x( value.bv_val, op->o_tmpmemctx );
 638                 }
 639
 640                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
 641                 break;
 642
 643         case LDAP_FILTER_SUBSTRINGS:
 644                 fstr->bv_len = f->f_sub_desc->ad_cname.bv_len +
 645                         STRLENOF("(=*)");
 646                 if ( undef )
 647                         fstr->bv_len++;
 648                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 128, op->o_tmpmemctx );
 649
 650                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s=*)",
 651                         undef ? "?" : "",
 652                         f->f_sub_desc->ad_cname.bv_val );
 653
 654                 if ( f->f_sub_initial.bv_val != NULL ) {
 655                         ber_len_t tmplen;
 656
 657                         len = fstr->bv_len;
 658
 659                         filter_escape_value_x( &f->f_sub_initial, &tmp, op->o_tmpmemctx );
 660                         tmplen = tmp.bv_len;
 661
 662                         fstr->bv_len += tmplen;
 663                         fstr->bv_val = op->o_tmprealloc( fstr->bv_val,
 664                                 fstr->bv_len + 1, op->o_tmpmemctx );
 665
 666                         snprintf( &fstr->bv_val[len - 2],
 667                                 tmplen + STRLENOF( /*(*/ "*)" ) + 1,
 668                                 /* "(attr=" */ "%s*)",
 669                                 tmp.bv_len ? tmp.bv_val : "");
 670
 671                         ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
 672                 }
 673
 674                 if ( f->f_sub_any != NULL ) {
 675                         for ( i = 0; f->f_sub_any[i].bv_val != NULL; i++ ) {
 676                                 ber_len_t tmplen;
 677
 678                                 len = fstr->bv_len;
 679                                 filter_escape_value_x( &f->f_sub_any[i],
 680                                         &tmp, op->o_tmpmemctx );
 681                                 tmplen = tmp.bv_len;
 682
 683                                 fstr->bv_len += tmplen + STRLENOF( /*(*/ ")" );
 684                                 fstr->bv_val = op->o_tmprealloc( fstr->bv_val,
 685                                         fstr->bv_len + 1, op->o_tmpmemctx );
 686
 687                                 snprintf( &fstr->bv_val[len - 1],
 688                                         tmplen + STRLENOF( /*(*/ "*)" ) + 1,
 689                                         /* "(attr=[init]*[any*]" */ "%s*)",
 690                                         tmp.bv_len ? tmp.bv_val : "");
 691                                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
 692                         }
 693                 }
 694
 695                 if ( f->f_sub_final.bv_val != NULL ) {
 696                         ber_len_t tmplen;
 697
 698                         len = fstr->bv_len;
 699
 700                         filter_escape_value_x( &f->f_sub_final, &tmp, op->o_tmpmemctx );
 701                         tmplen = tmp.bv_len;
 702
 703                         fstr->bv_len += tmplen;
 704                         fstr->bv_val = op->o_tmprealloc( fstr->bv_val,
 705                                 fstr->bv_len + 1, op->o_tmpmemctx );
 706
 707                         snprintf( &fstr->bv_val[len - 1],
 708                                 tmplen + STRLENOF( /*(*/ ")" ) + 1,
 709                                 /* "(attr=[init*][any*]" */ "%s)",
 710                                 tmp.bv_len ? tmp.bv_val : "");
 711
 712                         ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
 713                 }
 714
 715                 break;
 716
 717         case LDAP_FILTER_PRESENT:
 718                 fstr->bv_len = f->f_desc->ad_cname.bv_len +
 719                         STRLENOF("(=*)");
 720                 if ( undef )
 721                         fstr->bv_len++;
 722
 723                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
 724
 725                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s=*)",
 726                         undef ? "?" : "",
 727                         f->f_desc->ad_cname.bv_val );
 728                 break;
 729
 730         case LDAP_FILTER_AND:
 731         case LDAP_FILTER_OR:
 732         case LDAP_FILTER_NOT:
 733                 fstr->bv_len = STRLENOF("(%)");
 734                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 128, op->o_tmpmemctx );
 735
 736                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%c)",
 737                         f->f_choice == LDAP_FILTER_AND ? '&' :
 738                         f->f_choice == LDAP_FILTER_OR ? '|' : '!' );
 739
 740                 for ( p = f->f_list; p != NULL; p = p->f_next ) {
 741                         len = fstr->bv_len;
 742
 743                         filter2bv_x( op, p, &tmp );
 744
 745                         fstr->bv_len += tmp.bv_len;
 746                         fstr->bv_val = op->o_tmprealloc( fstr->bv_val, fstr->bv_len + 1,
 747                                 op->o_tmpmemctx );
 748
 749                         snprintf( &fstr->bv_val[len-1],
 750                                 tmp.bv_len + STRLENOF( /*(*/ ")" ) + 1,
 751                                 /*"("*/ "%s)", tmp.bv_val );
 752
 753                         op->o_tmpfree( tmp.bv_val, op->o_tmpmemctx );
 754                 }
 755
 756                 break;
 757
 758         case LDAP_FILTER_EXT: {
 759                 struct berval ad;
 760
 761                 filter_escape_value_x( &f->f_mr_value, &tmp, op->o_tmpmemctx );
 762                 /* NOTE: tmp can legitimately be NULL (meaning empty)
 763                  * since in a Filter values in MRAs are supposed
 764                  * to have been normalized, meaning that an empty value
 765                  * is legal for that attribute's syntax */
 766
 767                 if ( f->f_mr_desc ) {
 768                         ad = f->f_mr_desc->ad_cname;
 769                 } else {
 770                         ad.bv_len = 0;
 771                         ad.bv_val = "";
 772                 }
 773
 774                 fstr->bv_len = ad.bv_len +
 775                         ( f->f_mr_dnattrs ? STRLENOF(":dn") : 0 ) +
 776                         ( f->f_mr_rule_text.bv_len ? f->f_mr_rule_text.bv_len+1 : 0 ) +
 777                         tmp.bv_len + STRLENOF("(:=)");
 778                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
 779
 780                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s%s%s%s:=%s)",
 781                         undef ? "?" : "",
 782                         ad.bv_val,
 783                         f->f_mr_dnattrs ? ":dn" : "",
 784                         f->f_mr_rule_text.bv_len ? ":" : "",
 785                         f->f_mr_rule_text.bv_len ? f->f_mr_rule_text.bv_val : "",
 786                         tmp.bv_len ? tmp.bv_val : "" );
 787                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
 788                 } break;
 789
 790         case SLAPD_FILTER_COMPUTED:
 791                 switch ( f->f_result ) {
 792                 case LDAP_COMPARE_FALSE:
 793                         tmp = ber_bvfalse;
 794                         break;
 795
 796                 case LDAP_COMPARE_TRUE:
 797                         tmp = ber_bvtrue;
 798                         break;
 799
 800                 case SLAPD_COMPARE_UNDEFINED:
 801                         tmp = ber_bvundefined;
 802                         break;
 803
 804                 default:
 805                         tmp = ber_bverror;
 806                         break;
 807                 }
 808
 809                 ber_dupbv_x( fstr, &tmp, op->o_tmpmemctx );
 810                 break;
 811
 812         default:
 813                 ber_dupbv_x( fstr, &ber_bvunknown, op->o_tmpmemctx );
 814                 break;
 815         }
 816 }
 817
 818 void
 819 filter2bv( Filter *f, struct berval *fstr )
 820 {
 821         Operation op;
 822         Opheader ohdr;
 823
 824         op.o_hdr = &ohdr;
 825         op.o_tmpmemctx = NULL;
 826         op.o_tmpmfuncs = &ch_mfuncs;
 827
 828         filter2bv_x( &op, f, fstr );
 829 }
 830
 831 Filter *
 832 filter_dup( Filter *f, void *memctx )
 833 {
 834         BerMemoryFunctions *mf = &slap_sl_mfuncs;
 835         Filter *n;
 836
 837         if ( !f )
 838                 return NULL;
 839
 840         n = mf->bmf_malloc( sizeof(Filter), memctx );
 841         n->f_choice = f->f_choice;
 842         n->f_next = NULL;
 843
 844         switch( f->f_choice & SLAPD_FILTER_MASK ) {
 845         case SLAPD_FILTER_COMPUTED:
 846                 n->f_result = f->f_result;
 847                 break;
 848         case LDAP_FILTER_PRESENT:
 849                 if ( f->f_desc->ad_flags & SLAP_DESC_TEMPORARY )
 850                         n->f_desc = slap_bv2tmp_ad( &f->f_desc->ad_cname, memctx );
 851                 else
 852                         n->f_desc = f->f_desc;
 853                 break;
 854         case LDAP_FILTER_EQUALITY:
 855         case LDAP_FILTER_GE:
 856         case LDAP_FILTER_LE:
 857         case LDAP_FILTER_APPROX:
 858                 /* Should this be ava_dup() ? */
 859                 n->f_ava = mf->bmf_calloc( 1, sizeof(AttributeAssertion), memctx );
 860                 *n->f_ava = *f->f_ava;
 861                 if ( f->f_av_desc->ad_flags & SLAP_DESC_TEMPORARY )
 862                         n->f_av_desc = slap_bv2tmp_ad( &f->f_av_desc->ad_cname, memctx );
 863                 ber_dupbv_x( &n->f_av_value, &f->f_av_value, memctx );
 864                 break;
 865         case LDAP_FILTER_SUBSTRINGS:
 866                 n->f_sub = mf->bmf_calloc( 1, sizeof(SubstringsAssertion), memctx );
 867                 if ( f->f_sub_desc->ad_flags & SLAP_DESC_TEMPORARY )
 868                         n->f_sub_desc = slap_bv2tmp_ad( &f->f_sub_desc->ad_cname, memctx );
 869                 else
 870                         n->f_sub_desc = f->f_sub_desc;
 871                 if ( !BER_BVISNULL( &f->f_sub_initial ))
 872                         ber_dupbv_x( &n->f_sub_initial, &f->f_sub_initial, memctx );
 873                 if ( f->f_sub_any ) {
 874                         int i;
 875                         for ( i = 0; !BER_BVISNULL( &f->f_sub_any[i] ); i++ );
 876                         n->f_sub_any = mf->bmf_malloc(( i+1 )*sizeof( struct berval ),
 877                                 memctx );
 878                         for ( i = 0; !BER_BVISNULL( &f->f_sub_any[i] ); i++ ) {
 879                                 ber_dupbv_x( &n->f_sub_any[i], &f->f_sub_any[i], memctx );
 880                         }
 881                         BER_BVZERO( &n->f_sub_any[i] );
 882                 }
 883                 if ( !BER_BVISNULL( &f->f_sub_final ))
 884                         ber_dupbv_x( &n->f_sub_final, &f->f_sub_final, memctx );
 885                 break;
 886         case LDAP_FILTER_EXT: {
 887                 /* Should this be mra_dup() ? */
 888                 ber_len_t length;
 889                 length = sizeof(MatchingRuleAssertion);
 890                 if ( !BER_BVISNULL( &f->f_mr_rule_text ))
 891                         length += f->f_mr_rule_text.bv_len + 1;
 892                 n->f_mra = mf->bmf_calloc( 1, length, memctx );
 893                 *n->f_mra = *f->f_mra;
 894                 if ( f->f_mr_desc && ( f->f_sub_desc->ad_flags & SLAP_DESC_TEMPORARY ))
 895                         n->f_mr_desc = slap_bv2tmp_ad( &f->f_mr_desc->ad_cname, memctx );
 896                 ber_dupbv_x( &n->f_mr_value, &f->f_mr_value, memctx );
 897                 if ( !BER_BVISNULL( &f->f_mr_rule_text )) {
 898                         n->f_mr_rule_text.bv_val = (char *)(n->f_mra+1);
 899                         AC_MEMCPY(n->f_mr_rule_text.bv_val,
 900                                 f->f_mr_rule_text.bv_val, f->f_mr_rule_text.bv_len );
 901                 }
 902                 } break;
 903         case LDAP_FILTER_AND:
 904         case LDAP_FILTER_OR:
 905         case LDAP_FILTER_NOT: {
 906                 Filter **p;
 907                 for ( p = &n->f_list, f = f->f_list; f; f = f->f_next ) {
 908                         *p = filter_dup( f, memctx );
 909                         p = &(*p)->f_next;
 910                 }
 911                 } break;
 912         }
 913         return n;
 914 }
 915
 916 static int
 917 get_simple_vrFilter(
 918         Operation *op,
 919         BerElement *ber,
 920         ValuesReturnFilter **filt,
 921         const char **text )
 922 {
 923         ber_tag_t       tag;
 924         ber_len_t       len;
 925         int             err;
 926         ValuesReturnFilter vrf;
 927
 928         Debug( LDAP_DEBUG_FILTER, "begin get_simple_vrFilter\n", 0, 0, 0 );
 929
 930         tag = ber_peek_tag( ber, &len );
 931
 932         if( tag == LBER_ERROR ) {
 933                 *text = "error decoding filter";
 934                 return SLAPD_DISCONNECT;
 935         }
 936
 937         vrf.vrf_next = NULL;
 938
 939         err = LDAP_SUCCESS;
 940         vrf.vrf_choice = tag;
 941
 942         switch ( vrf.vrf_choice ) {
 943         case LDAP_FILTER_EQUALITY:
 944                 Debug( LDAP_DEBUG_FILTER, "EQUALITY\n", 0, 0, 0 );
 945                 err = get_ava( op, ber, (Filter *)&vrf, SLAP_MR_EQUALITY, text );
 946                 if ( err != LDAP_SUCCESS ) {
 947                         break;
 948                 }
 949
 950                 assert( vrf.vrf_ava != NULL );
 951                 break;
 952
 953         case LDAP_FILTER_SUBSTRINGS:
 954                 Debug( LDAP_DEBUG_FILTER, "SUBSTRINGS\n", 0, 0, 0 );
 955                 err = get_ssa( op, ber, (Filter *)&vrf, text );
 956                 break;
 957
 958         case LDAP_FILTER_GE:
 959                 Debug( LDAP_DEBUG_FILTER, "GE\n", 0, 0, 0 );
 960                 err = get_ava( op, ber, (Filter *)&vrf, SLAP_MR_ORDERING, text );
 961                 if ( err != LDAP_SUCCESS ) {
 962                         break;
 963                 }
 964                 break;
 965
 966         case LDAP_FILTER_LE:
 967                 Debug( LDAP_DEBUG_FILTER, "LE\n", 0, 0, 0 );
 968                 err = get_ava( op, ber, (Filter *)&vrf, SLAP_MR_ORDERING, text );
 969                 if ( err != LDAP_SUCCESS ) {
 970                         break;
 971                 }
 972                 break;
 973
 974         case LDAP_FILTER_PRESENT: {
 975                 struct berval type;
 976
 977                 Debug( LDAP_DEBUG_FILTER, "PRESENT\n", 0, 0, 0 );
 978                 if ( ber_scanf( ber, "m", &type ) == LBER_ERROR ) {
 979                         err = SLAPD_DISCONNECT;
 980                         *text = "error decoding filter";
 981                         break;
 982                 }
 983
 984                 vrf.vrf_desc = NULL;
 985                 err = slap_bv2ad( &type, &vrf.vrf_desc, text );
 986
 987                 if( err != LDAP_SUCCESS ) {
 988                         vrf.vrf_choice |= SLAPD_FILTER_UNDEFINED;
 989                         err = slap_bv2undef_ad( &type, &vrf.vrf_desc, text,
 990                                 SLAP_AD_PROXIED);
 991
 992                         if( err != LDAP_SUCCESS ) {
 993                                 /* unrecognized attribute description or other error */
 994                                 Debug( LDAP_DEBUG_ANY,
 995                                         "get_simple_vrFilter: conn %lu unknown "
 996                                         "attribute type=%s (%d)\n",
 997                                         op->o_connid, type.bv_val, err );
 998
 999                                 vrf.vrf_choice = SLAPD_FILTER_COMPUTED;
1000                                 vrf.vrf_result = LDAP_COMPARE_FALSE;
1001                                 err = LDAP_SUCCESS;
1002                                 break;
1003                         }
1004                 }
1005                 } break;
1006
1007         case LDAP_FILTER_APPROX:
1008                 Debug( LDAP_DEBUG_FILTER, "APPROX\n", 0, 0, 0 );
1009                 err = get_ava( op, ber, (Filter *)&vrf, SLAP_MR_EQUALITY_APPROX, text );
1010                 if ( err != LDAP_SUCCESS ) {
1011                         break;
1012                 }
1013                 break;
1014
1015         case LDAP_FILTER_EXT:
1016                 Debug( LDAP_DEBUG_FILTER, "EXTENSIBLE\n", 0, 0, 0 );
1017
1018                 err = get_mra( op, ber, (Filter *)&vrf, text );
1019                 if ( err != LDAP_SUCCESS ) {
1020                         break;
1021                 }
1022
1023                 assert( vrf.vrf_mra != NULL );
1024                 break;
1025
1026         default:
1027                 (void) ber_scanf( ber, "x" ); /* skip the element */
1028                 Debug( LDAP_DEBUG_ANY, "get_simple_vrFilter: unknown filter type=%lu\n",
1029                         vrf.vrf_choice, 0, 0 );
1030                 vrf.vrf_choice = SLAPD_FILTER_COMPUTED;
1031                 vrf.vrf_result = SLAPD_COMPARE_UNDEFINED;
1032                 break;
1033         }
1034
1035         if ( err != LDAP_SUCCESS && err != SLAPD_DISCONNECT ) {
1036                 /* ignore error */
1037                 vrf.vrf_choice = SLAPD_FILTER_COMPUTED;
1038                 vrf.vrf_result = SLAPD_COMPARE_UNDEFINED;
1039                 err = LDAP_SUCCESS;
1040         }
1041
1042         if ( err == LDAP_SUCCESS ) {
1043                 *filt = op->o_tmpalloc( sizeof vrf, op->o_tmpmemctx );
1044                 **filt = vrf;
1045         }
1046
1047         Debug( LDAP_DEBUG_FILTER, "end get_simple_vrFilter %d\n", err, 0, 0 );
1048
1049         return err;
1050 }
1051
1052 int
1053 get_vrFilter( Operation *op, BerElement *ber,
1054         ValuesReturnFilter **vrf,
1055         const char **text )
1056 {
1057         /*
1058          * A ValuesReturnFilter looks like this:
1059          *
1060          *      ValuesReturnFilter ::= SEQUENCE OF SimpleFilterItem
1061          *      SimpleFilterItem ::= CHOICE {
1062          *              equalityMatch   [3]     AttributeValueAssertion,
1063          *              substrings      [4]     SubstringFilter,
1064          *              greaterOrEqual  [5]     AttributeValueAssertion,
1065          *              lessOrEqual     [6]     AttributeValueAssertion,
1066          *              present         [7]     AttributeType,
1067          *              approxMatch     [8]     AttributeValueAssertion,
1068          *              extensibleMatch [9]     SimpleMatchingAssertion -- LDAPv3
1069          *      }
1070          *
1071          *      SubstringFilter ::= SEQUENCE {
1072          *              type               AttributeType,
1073          *              SEQUENCE OF CHOICE {
1074          *                      initial          [0] IA5String,
1075          *                      any              [1] IA5String,
1076          *                      final            [2] IA5String
1077          *              }
1078          *      }
1079          *
1080          *      SimpleMatchingAssertion ::= SEQUENCE {  -- LDAPv3
1081          *              matchingRule    [1] MatchingRuleId OPTIONAL,
1082          *              type            [2] AttributeDescription OPTIONAL,
1083          *              matchValue      [3] AssertionValue }
1084          */
1085
1086         ValuesReturnFilter **n;
1087         ber_tag_t       tag;
1088         ber_len_t       len;
1089         char            *last;
1090
1091         Debug( LDAP_DEBUG_FILTER, "begin get_vrFilter\n", 0, 0, 0 );
1092
1093         tag = ber_peek_tag( ber, &len );
1094
1095         if( tag == LBER_ERROR ) {
1096                 *text = "error decoding vrFilter";
1097                 return SLAPD_DISCONNECT;
1098         }
1099
1100         if( tag != LBER_SEQUENCE ) {
1101                 *text = "error decoding vrFilter, expect SEQUENCE tag";
1102                 return SLAPD_DISCONNECT;
1103         }
1104
1105         n = vrf;
1106         for ( tag = ber_first_element( ber, &len, &last );
1107                 tag != LBER_DEFAULT;
1108                 tag = ber_next_element( ber, &len, last ) )
1109         {
1110                 int err = get_simple_vrFilter( op, ber, n, text );
1111
1112                 if ( err != LDAP_SUCCESS ) return( err );
1113
1114                 n = &(*n)->vrf_next;
1115         }
1116         *n = NULL;
1117
1118         Debug( LDAP_DEBUG_FILTER, "end get_vrFilter\n", 0, 0, 0 );
1119         return( LDAP_SUCCESS );
1120 }
1121
1122 void
1123 vrFilter_free( Operation *op, ValuesReturnFilter *vrf )
1124 {
1125         ValuesReturnFilter      *p, *next;
1126
1127         if ( vrf == NULL ) {
1128                 return;
1129         }
1130
1131         for ( p = vrf; p != NULL; p = next ) {
1132                 next = p->vrf_next;
1133
1134                 switch ( vrf->vrf_choice & SLAPD_FILTER_MASK ) {
1135                 case LDAP_FILTER_PRESENT:
1136                         break;
1137
1138                 case LDAP_FILTER_EQUALITY:
1139                 case LDAP_FILTER_GE:
1140                 case LDAP_FILTER_LE:
1141                 case LDAP_FILTER_APPROX:
1142                         ava_free( op, vrf->vrf_ava, 1 );
1143                         break;
1144
1145                 case LDAP_FILTER_SUBSTRINGS:
1146                         if ( vrf->vrf_sub_initial.bv_val != NULL ) {
1147                                 op->o_tmpfree( vrf->vrf_sub_initial.bv_val, op->o_tmpmemctx );
1148                         }
1149                         ber_bvarray_free_x( vrf->vrf_sub_any, op->o_tmpmemctx );
1150                         if ( vrf->vrf_sub_final.bv_val != NULL ) {
1151                                 op->o_tmpfree( vrf->vrf_sub_final.bv_val, op->o_tmpmemctx );
1152                         }
1153                         op->o_tmpfree( vrf->vrf_sub, op->o_tmpmemctx );
1154                         break;
1155
1156                 case LDAP_FILTER_EXT:
1157                         mra_free( op, vrf->vrf_mra, 1 );
1158                         break;
1159
1160                 case SLAPD_FILTER_COMPUTED:
1161                         break;
1162
1163                 default:
1164                         Debug( LDAP_DEBUG_ANY, "filter_free: unknown filter type=%lu\n",
1165                                 vrf->vrf_choice, 0, 0 );
1166                         break;
1167                 }
1168
1169                 op->o_tmpfree( vrf, op->o_tmpmemctx );
1170         }
1171 }
1172
1173 void
1174 vrFilter2bv( Operation *op, ValuesReturnFilter *vrf, struct berval *fstr )
1175 {
1176         ValuesReturnFilter      *p;
1177         struct berval tmp;
1178         ber_len_t len;
1179
1180         if ( vrf == NULL ) {
1181                 ber_str2bv_x( "No filter!", STRLENOF("No filter!"),
1182                         1, fstr, op->o_tmpmemctx );
1183                 return;
1184         }
1185
1186         fstr->bv_len = STRLENOF("()");
1187         fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 128, op->o_tmpmemctx );
1188
1189         snprintf( fstr->bv_val, fstr->bv_len + 1, "()");
1190
1191         for ( p = vrf; p != NULL; p = p->vrf_next ) {
1192                 len = fstr->bv_len;
1193
1194                 simple_vrFilter2bv( op, p, &tmp );
1195
1196                 fstr->bv_len += tmp.bv_len;
1197                 fstr->bv_val = op->o_tmprealloc( fstr->bv_val, fstr->bv_len + 1,
1198                         op->o_tmpmemctx );
1199
1200                 snprintf( &fstr->bv_val[len-1], tmp.bv_len + 2,
1201                         /*"("*/ "%s)", tmp.bv_val );
1202
1203                 op->o_tmpfree( tmp.bv_val, op->o_tmpmemctx );
1204         }
1205 }
1206
1207 static void
1208 simple_vrFilter2bv( Operation *op, ValuesReturnFilter *vrf, struct berval *fstr )
1209 {
1210         struct berval tmp;
1211         ber_len_t len;
1212         int undef;
1213
1214         if ( vrf == NULL ) {
1215                 ber_str2bv_x( "No filter!", STRLENOF("No filter!"), 1, fstr,
1216                         op->o_tmpmemctx );
1217                 return;
1218         }
1219         undef = vrf->vrf_choice & SLAPD_FILTER_UNDEFINED;
1220
1221         switch ( vrf->vrf_choice & SLAPD_FILTER_MASK ) {
1222         case LDAP_FILTER_EQUALITY:
1223                 filter_escape_value_x( &vrf->vrf_av_value, &tmp, op->o_tmpmemctx );
1224
1225                 fstr->bv_len = vrf->vrf_av_desc->ad_cname.bv_len +
1226                         tmp.bv_len + STRLENOF("(=)");
1227                 if ( undef ) fstr->bv_len++;
1228                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
1229
1230                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=%s)",
1231                         vrf->vrf_av_desc->ad_cname.bv_val,
1232                         tmp.bv_val );
1233
1234                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1235                 break;
1236
1237         case LDAP_FILTER_GE:
1238                 filter_escape_value_x( &vrf->vrf_av_value, &tmp, op->o_tmpmemctx );
1239
1240                 fstr->bv_len = vrf->vrf_av_desc->ad_cname.bv_len +
1241                         tmp.bv_len + STRLENOF("(>=)");
1242                 if ( undef ) fstr->bv_len++;
1243                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
1244
1245                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s>=%s)",
1246                         vrf->vrf_av_desc->ad_cname.bv_val,
1247                         tmp.bv_val );
1248
1249                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1250                 break;
1251
1252         case LDAP_FILTER_LE:
1253                 filter_escape_value_x( &vrf->vrf_av_value, &tmp, op->o_tmpmemctx );
1254
1255                 fstr->bv_len = vrf->vrf_av_desc->ad_cname.bv_len +
1256                         tmp.bv_len + STRLENOF("(<=)");
1257                 if ( undef ) fstr->bv_len++;
1258                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
1259
1260                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s<=%s)",
1261                         vrf->vrf_av_desc->ad_cname.bv_val,
1262                         tmp.bv_val );
1263
1264                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1265                 break;
1266
1267         case LDAP_FILTER_APPROX:
1268                 filter_escape_value_x( &vrf->vrf_av_value, &tmp, op->o_tmpmemctx );
1269
1270                 fstr->bv_len = vrf->vrf_av_desc->ad_cname.bv_len +
1271                         tmp.bv_len + STRLENOF("(~=)");
1272                 if ( undef ) fstr->bv_len++;
1273                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
1274
1275                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s~=%s)",
1276                         vrf->vrf_av_desc->ad_cname.bv_val,
1277                         tmp.bv_val );
1278                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1279                 break;
1280
1281         case LDAP_FILTER_SUBSTRINGS:
1282                 fstr->bv_len = vrf->vrf_sub_desc->ad_cname.bv_len +
1283                         STRLENOF("(=*)");
1284                 if ( undef ) fstr->bv_len++;
1285                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 128, op->o_tmpmemctx );
1286
1287                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
1288                         vrf->vrf_sub_desc->ad_cname.bv_val );
1289
1290                 if ( vrf->vrf_sub_initial.bv_val != NULL ) {
1291                         len = fstr->bv_len;
1292
1293                         filter_escape_value_x( &vrf->vrf_sub_initial, &tmp, op->o_tmpmemctx );
1294
1295                         fstr->bv_len += tmp.bv_len;
1296                         fstr->bv_val = op->o_tmprealloc( fstr->bv_val, fstr->bv_len + 1,
1297                                 op->o_tmpmemctx );
1298
1299                         snprintf( &fstr->bv_val[len-2], tmp.bv_len+3,
1300                                 /* "(attr=" */ "%s*)",
1301                                 tmp.bv_val );
1302
1303                         ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1304                 }
1305
1306                 if ( vrf->vrf_sub_any != NULL ) {
1307                         int i;
1308                         for ( i = 0; vrf->vrf_sub_any[i].bv_val != NULL; i++ ) {
1309                                 len = fstr->bv_len;
1310                                 filter_escape_value_x( &vrf->vrf_sub_any[i], &tmp,
1311                                         op->o_tmpmemctx );
1312
1313                                 fstr->bv_len += tmp.bv_len + 1;
1314                                 fstr->bv_val = op->o_tmprealloc( fstr->bv_val,
1315                                         fstr->bv_len + 1, op->o_tmpmemctx );
1316
1317                                 snprintf( &fstr->bv_val[len-1], tmp.bv_len+3,
1318                                         /* "(attr=[init]*[any*]" */ "%s*)",
1319                                         tmp.bv_val );
1320                                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1321                         }
1322                 }
1323
1324                 if ( vrf->vrf_sub_final.bv_val != NULL ) {
1325                         len = fstr->bv_len;
1326
1327                         filter_escape_value_x( &vrf->vrf_sub_final, &tmp, op->o_tmpmemctx );
1328
1329                         fstr->bv_len += tmp.bv_len;
1330                         fstr->bv_val = op->o_tmprealloc( fstr->bv_val, fstr->bv_len + 1,
1331                                 op->o_tmpmemctx );
1332
1333                         snprintf( &fstr->bv_val[len-1], tmp.bv_len+3,
1334                                 /* "(attr=[init*][any*]" */ "%s)",
1335                                 tmp.bv_val );
1336
1337                         ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1338                 }
1339
1340                 break;
1341
1342         case LDAP_FILTER_PRESENT:
1343                 fstr->bv_len = vrf->vrf_desc->ad_cname.bv_len +
1344                         STRLENOF("(=*)");
1345                 if ( undef ) fstr->bv_len++;
1346                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
1347
1348                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
1349                         vrf->vrf_desc->ad_cname.bv_val );
1350                 break;
1351
1352         case LDAP_FILTER_EXT: {
1353                 struct berval ad;
1354                 filter_escape_value_x( &vrf->vrf_mr_value, &tmp, op->o_tmpmemctx );
1355
1356                 if ( vrf->vrf_mr_desc ) {
1357                         ad = vrf->vrf_mr_desc->ad_cname;
1358                 } else {
1359                         ad.bv_len = 0;
1360                         ad.bv_val = "";
1361                 }
1362
1363                 fstr->bv_len = ad.bv_len +
1364                         ( vrf->vrf_mr_dnattrs ? STRLENOF(":dn") : 0 ) +
1365                         ( vrf->vrf_mr_rule_text.bv_len
1366                                 ? vrf->vrf_mr_rule_text.bv_len+1 : 0 ) +
1367                         tmp.bv_len + STRLENOF("(:=)");
1368                 if ( undef ) fstr->bv_len++;
1369                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
1370
1371                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s%s%s:=%s)",
1372                         ad.bv_val,
1373                         vrf->vrf_mr_dnattrs ? ":dn" : "",
1374                         vrf->vrf_mr_rule_text.bv_len ? ":" : "",
1375                         vrf->vrf_mr_rule_text.bv_len ? vrf->vrf_mr_rule_text.bv_val : "",
1376                         tmp.bv_val );
1377
1378                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1379                 } break;
1380
1381         case SLAPD_FILTER_COMPUTED:
1382                 ber_str2bv_x(
1383                         vrf->vrf_result == LDAP_COMPARE_FALSE ? "(?=false)" :
1384                         vrf->vrf_result == LDAP_COMPARE_TRUE ? "(?=true)" :
1385                         vrf->vrf_result == SLAPD_COMPARE_UNDEFINED
1386                                 ? "(?=undefined)" : "(?=error)",
1387                         vrf->vrf_result == LDAP_COMPARE_FALSE ? STRLENOF("(?=false)") :
1388                         vrf->vrf_result == LDAP_COMPARE_TRUE ? STRLENOF("(?=true)") :
1389                         vrf->vrf_result == SLAPD_COMPARE_UNDEFINED
1390                                 ? STRLENOF("(?=undefined)") : STRLENOF("(?=error)"),
1391                         1, fstr, op->o_tmpmemctx );
1392                 break;
1393
1394         default:
1395                 ber_str2bv_x( "(?=unknown)", STRLENOF("(?=unknown)"),
1396                         1, fstr, op->o_tmpmemctx );
1397                 break;
1398         }
1399 }