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                 rc = LDAP_SUCCESS;
 482         }
 483
 484         if( rc == LDAP_SUCCESS ) {
 485                 f->f_sub = op->o_tmpalloc( sizeof( ssa ), op->o_tmpmemctx );
 486                 *f->f_sub = ssa;
 487         }
 488
 489         Debug( LDAP_DEBUG_FILTER, "end get_ssa\n", 0, 0, 0 );
 490         return rc /* LDAP_SUCCESS */ ;
 491 }
 492
 493 void
 494 filter_free_x( Operation *op, Filter *f )
 495 {
 496         Filter  *p, *next;
 497
 498         if ( f == NULL ) {
 499                 return;
 500         }
 501
 502         f->f_choice &= SLAPD_FILTER_MASK;
 503
 504         switch ( f->f_choice ) {
 505         case LDAP_FILTER_PRESENT:
 506                 break;
 507
 508         case LDAP_FILTER_EQUALITY:
 509         case LDAP_FILTER_GE:
 510         case LDAP_FILTER_LE:
 511         case LDAP_FILTER_APPROX:
 512                 ava_free( op, f->f_ava, 1 );
 513                 break;
 514
 515         case LDAP_FILTER_SUBSTRINGS:
 516                 if ( f->f_sub_initial.bv_val != NULL ) {
 517                         op->o_tmpfree( f->f_sub_initial.bv_val, op->o_tmpmemctx );
 518                 }
 519                 ber_bvarray_free_x( f->f_sub_any, op->o_tmpmemctx );
 520                 if ( f->f_sub_final.bv_val != NULL ) {
 521                         op->o_tmpfree( f->f_sub_final.bv_val, op->o_tmpmemctx );
 522                 }
 523                 if ( f->f_sub->sa_desc->ad_flags & SLAP_DESC_TEMPORARY )
 524                         op->o_tmpfree( f->f_sub->sa_desc, op->o_tmpmemctx );
 525                 op->o_tmpfree( f->f_sub, op->o_tmpmemctx );
 526                 break;
 527
 528         case LDAP_FILTER_AND:
 529         case LDAP_FILTER_OR:
 530         case LDAP_FILTER_NOT:
 531                 for ( p = f->f_list; p != NULL; p = next ) {
 532                         next = p->f_next;
 533                         filter_free_x( op, p );
 534                 }
 535                 break;
 536
 537         case LDAP_FILTER_EXT:
 538                 mra_free( op, f->f_mra, 1 );
 539                 break;
 540
 541         case SLAPD_FILTER_COMPUTED:
 542                 break;
 543
 544         default:
 545                 Debug( LDAP_DEBUG_ANY, "filter_free: unknown filter type=%lu\n",
 546                         f->f_choice, 0, 0 );
 547                 break;
 548         }
 549
 550         op->o_tmpfree( f, op->o_tmpmemctx );
 551 }
 552
 553 void
 554 filter_free( Filter *f )
 555 {
 556         Operation op;
 557         Opheader ohdr;
 558
 559         op.o_hdr = &ohdr;
 560         op.o_tmpmemctx = slap_sl_context( f );
 561         op.o_tmpmfuncs = &slap_sl_mfuncs;
 562         filter_free_x( &op, f );
 563 }
 564
 565 void
 566 filter2bv_x( Operation *op, Filter *f, struct berval *fstr )
 567 {
 568         int             i;
 569         Filter          *p;
 570         struct berval   tmp, value;
 571         static struct berval
 572                         ber_bvfalse = BER_BVC( "(?=false)" ),
 573                         ber_bvtrue = BER_BVC( "(?=true)" ),
 574                         ber_bvundefined = BER_BVC( "(?=undefined)" ),
 575                         ber_bverror = BER_BVC( "(?=error)" ),
 576                         ber_bvunknown = BER_BVC( "(?=unknown)" ),
 577                         ber_bvnone = BER_BVC( "(?=none)" );
 578         ber_len_t       len;
 579         ber_tag_t       choice;
 580         int undef;
 581         char *sign;
 582
 583         if ( f == NULL ) {
 584                 ber_dupbv_x( fstr, &ber_bvnone, op->o_tmpmemctx );
 585                 return;
 586         }
 587
 588         undef = f->f_choice & SLAPD_FILTER_UNDEFINED;
 589         choice = f->f_choice & SLAPD_FILTER_MASK;
 590
 591         switch ( choice ) {
 592         case LDAP_FILTER_EQUALITY:
 593                 fstr->bv_len = STRLENOF("(=)");
 594                 sign = "=";
 595                 goto simple;
 596         case LDAP_FILTER_GE:
 597                 fstr->bv_len = STRLENOF("(>=)");
 598                 sign = ">=";
 599                 goto simple;
 600         case LDAP_FILTER_LE:
 601                 fstr->bv_len = STRLENOF("(<=)");
 602                 sign = "<=";
 603                 goto simple;
 604         case LDAP_FILTER_APPROX:
 605                 fstr->bv_len = STRLENOF("(~=)");
 606                 sign = "~=";
 607
 608 simple:
 609                 value = f->f_av_value;
 610                 if ( f->f_av_desc->ad_type->sat_equality &&
 611                         !undef &&
 612                         ( f->f_av_desc->ad_type->sat_equality->smr_usage & SLAP_MR_MUTATION_NORMALIZER ))
 613                 {
 614                         f->f_av_desc->ad_type->sat_equality->smr_normalize(
 615                                 (SLAP_MR_DENORMALIZE|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX),
 616                                 NULL, NULL, &f->f_av_value, &value, op->o_tmpmemctx );
 617                 }
 618
 619                 filter_escape_value_x( &value, &tmp, op->o_tmpmemctx );
 620                 /* NOTE: tmp can legitimately be NULL (meaning empty)
 621                  * since in a Filter values in AVAs are supposed
 622                  * to have been normalized, meaning that an empty value
 623                  * is legal for that attribute's syntax */
 624
 625                 fstr->bv_len += f->f_av_desc->ad_cname.bv_len + tmp.bv_len;
 626                 if ( undef )
 627                         fstr->bv_len++;
 628                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
 629
 630                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s%s%s)",
 631                         undef ? "?" : "",
 632                         f->f_av_desc->ad_cname.bv_val, sign,
 633                         tmp.bv_len ? tmp.bv_val : "" );
 634
 635                 if ( value.bv_val != f->f_av_value.bv_val ) {
 636                         ber_memfree_x( value.bv_val, op->o_tmpmemctx );
 637                 }
 638
 639                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
 640                 break;
 641
 642         case LDAP_FILTER_SUBSTRINGS:
 643                 fstr->bv_len = f->f_sub_desc->ad_cname.bv_len +
 644                         STRLENOF("(=*)");
 645                 if ( undef )
 646                         fstr->bv_len++;
 647                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 128, op->o_tmpmemctx );
 648
 649                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s=*)",
 650                         undef ? "?" : "",
 651                         f->f_sub_desc->ad_cname.bv_val );
 652
 653                 if ( f->f_sub_initial.bv_val != NULL ) {
 654                         ber_len_t tmplen;
 655
 656                         len = fstr->bv_len;
 657
 658                         filter_escape_value_x( &f->f_sub_initial, &tmp, op->o_tmpmemctx );
 659                         tmplen = tmp.bv_len;
 660
 661                         fstr->bv_len += tmplen;
 662                         fstr->bv_val = op->o_tmprealloc( fstr->bv_val,
 663                                 fstr->bv_len + 1, op->o_tmpmemctx );
 664
 665                         snprintf( &fstr->bv_val[len - 2],
 666                                 tmplen + STRLENOF( /*(*/ "*)" ) + 1,
 667                                 /* "(attr=" */ "%s*)",
 668                                 tmp.bv_len ? tmp.bv_val : "");
 669
 670                         ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
 671                 }
 672
 673                 if ( f->f_sub_any != NULL ) {
 674                         for ( i = 0; f->f_sub_any[i].bv_val != NULL; i++ ) {
 675                                 ber_len_t tmplen;
 676
 677                                 len = fstr->bv_len;
 678                                 filter_escape_value_x( &f->f_sub_any[i],
 679                                         &tmp, op->o_tmpmemctx );
 680                                 tmplen = tmp.bv_len;
 681
 682                                 fstr->bv_len += tmplen + STRLENOF( /*(*/ ")" );
 683                                 fstr->bv_val = op->o_tmprealloc( fstr->bv_val,
 684                                         fstr->bv_len + 1, op->o_tmpmemctx );
 685
 686                                 snprintf( &fstr->bv_val[len - 1],
 687                                         tmplen + STRLENOF( /*(*/ "*)" ) + 1,
 688                                         /* "(attr=[init]*[any*]" */ "%s*)",
 689                                         tmp.bv_len ? tmp.bv_val : "");
 690                                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
 691                         }
 692                 }
 693
 694                 if ( f->f_sub_final.bv_val != NULL ) {
 695                         ber_len_t tmplen;
 696
 697                         len = fstr->bv_len;
 698
 699                         filter_escape_value_x( &f->f_sub_final, &tmp, op->o_tmpmemctx );
 700                         tmplen = tmp.bv_len;
 701
 702                         fstr->bv_len += tmplen;
 703                         fstr->bv_val = op->o_tmprealloc( fstr->bv_val,
 704                                 fstr->bv_len + 1, op->o_tmpmemctx );
 705
 706                         snprintf( &fstr->bv_val[len - 1],
 707                                 tmplen + STRLENOF( /*(*/ ")" ) + 1,
 708                                 /* "(attr=[init*][any*]" */ "%s)",
 709                                 tmp.bv_len ? tmp.bv_val : "");
 710
 711                         ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
 712                 }
 713
 714                 break;
 715
 716         case LDAP_FILTER_PRESENT:
 717                 fstr->bv_len = f->f_desc->ad_cname.bv_len +
 718                         STRLENOF("(=*)");
 719                 if ( undef )
 720                         fstr->bv_len++;
 721
 722                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
 723
 724                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s=*)",
 725                         undef ? "?" : "",
 726                         f->f_desc->ad_cname.bv_val );
 727                 break;
 728
 729         case LDAP_FILTER_AND:
 730         case LDAP_FILTER_OR:
 731         case LDAP_FILTER_NOT:
 732                 fstr->bv_len = STRLENOF("(%)");
 733                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 128, op->o_tmpmemctx );
 734
 735                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%c)",
 736                         f->f_choice == LDAP_FILTER_AND ? '&' :
 737                         f->f_choice == LDAP_FILTER_OR ? '|' : '!' );
 738
 739                 for ( p = f->f_list; p != NULL; p = p->f_next ) {
 740                         len = fstr->bv_len;
 741
 742                         filter2bv_x( op, p, &tmp );
 743
 744                         fstr->bv_len += tmp.bv_len;
 745                         fstr->bv_val = op->o_tmprealloc( fstr->bv_val, fstr->bv_len + 1,
 746                                 op->o_tmpmemctx );
 747
 748                         snprintf( &fstr->bv_val[len-1],
 749                                 tmp.bv_len + STRLENOF( /*(*/ ")" ) + 1,
 750                                 /*"("*/ "%s)", tmp.bv_val );
 751
 752                         op->o_tmpfree( tmp.bv_val, op->o_tmpmemctx );
 753                 }
 754
 755                 break;
 756
 757         case LDAP_FILTER_EXT: {
 758                 struct berval ad;
 759
 760                 filter_escape_value_x( &f->f_mr_value, &tmp, op->o_tmpmemctx );
 761                 /* NOTE: tmp can legitimately be NULL (meaning empty)
 762                  * since in a Filter values in MRAs are supposed
 763                  * to have been normalized, meaning that an empty value
 764                  * is legal for that attribute's syntax */
 765
 766                 if ( f->f_mr_desc ) {
 767                         ad = f->f_mr_desc->ad_cname;
 768                 } else {
 769                         ad.bv_len = 0;
 770                         ad.bv_val = "";
 771                 }
 772
 773                 fstr->bv_len = ad.bv_len +
 774                         ( f->f_mr_dnattrs ? STRLENOF(":dn") : 0 ) +
 775                         ( f->f_mr_rule_text.bv_len ? f->f_mr_rule_text.bv_len+1 : 0 ) +
 776                         tmp.bv_len + STRLENOF("(:=)");
 777                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
 778
 779                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s%s%s%s:=%s)",
 780                         undef ? "?" : "",
 781                         ad.bv_val,
 782                         f->f_mr_dnattrs ? ":dn" : "",
 783                         f->f_mr_rule_text.bv_len ? ":" : "",
 784                         f->f_mr_rule_text.bv_len ? f->f_mr_rule_text.bv_val : "",
 785                         tmp.bv_len ? tmp.bv_val : "" );
 786                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
 787                 } break;
 788
 789         case SLAPD_FILTER_COMPUTED:
 790                 switch ( f->f_result ) {
 791                 case LDAP_COMPARE_FALSE:
 792                         tmp = ber_bvfalse;
 793                         break;
 794
 795                 case LDAP_COMPARE_TRUE:
 796                         tmp = ber_bvtrue;
 797                         break;
 798
 799                 case SLAPD_COMPARE_UNDEFINED:
 800                         tmp = ber_bvundefined;
 801                         break;
 802
 803                 default:
 804                         tmp = ber_bverror;
 805                         break;
 806                 }
 807
 808                 ber_dupbv_x( fstr, &tmp, op->o_tmpmemctx );
 809                 break;
 810
 811         default:
 812                 ber_dupbv_x( fstr, &ber_bvunknown, op->o_tmpmemctx );
 813                 break;
 814         }
 815 }
 816
 817 void
 818 filter2bv( Filter *f, struct berval *fstr )
 819 {
 820         Operation op;
 821         Opheader ohdr;
 822
 823         op.o_hdr = &ohdr;
 824         op.o_tmpmemctx = NULL;
 825         op.o_tmpmfuncs = &ch_mfuncs;
 826
 827         filter2bv_x( &op, f, fstr );
 828 }
 829
 830 Filter *
 831 filter_dup( Filter *f, void *memctx )
 832 {
 833         BerMemoryFunctions *mf = &slap_sl_mfuncs;
 834         Filter *n;
 835
 836         if ( !f )
 837                 return NULL;
 838
 839         n = mf->bmf_malloc( sizeof(Filter), memctx );
 840         n->f_choice = f->f_choice;
 841         n->f_next = NULL;
 842
 843         switch( f->f_choice & SLAPD_FILTER_MASK ) {
 844         case SLAPD_FILTER_COMPUTED:
 845                 n->f_result = f->f_result;
 846                 break;
 847         case LDAP_FILTER_PRESENT:
 848                 if ( f->f_desc->ad_flags & SLAP_DESC_TEMPORARY )
 849                         n->f_desc = slap_bv2tmp_ad( &f->f_desc->ad_cname, memctx );
 850                 else
 851                         n->f_desc = f->f_desc;
 852                 break;
 853         case LDAP_FILTER_EQUALITY:
 854         case LDAP_FILTER_GE:
 855         case LDAP_FILTER_LE:
 856         case LDAP_FILTER_APPROX:
 857                 /* Should this be ava_dup() ? */
 858                 n->f_ava = mf->bmf_calloc( 1, sizeof(AttributeAssertion), memctx );
 859                 *n->f_ava = *f->f_ava;
 860                 if ( f->f_av_desc->ad_flags & SLAP_DESC_TEMPORARY )
 861                         n->f_av_desc = slap_bv2tmp_ad( &f->f_av_desc->ad_cname, memctx );
 862                 ber_dupbv_x( &n->f_av_value, &f->f_av_value, memctx );
 863                 break;
 864         case LDAP_FILTER_SUBSTRINGS:
 865                 n->f_sub = mf->bmf_calloc( 1, sizeof(SubstringsAssertion), memctx );
 866                 if ( f->f_sub_desc->ad_flags & SLAP_DESC_TEMPORARY )
 867                         n->f_sub_desc = slap_bv2tmp_ad( &f->f_sub_desc->ad_cname, memctx );
 868                 else
 869                         n->f_sub_desc = f->f_sub_desc;
 870                 if ( !BER_BVISNULL( &f->f_sub_initial ))
 871                         ber_dupbv_x( &n->f_sub_initial, &f->f_sub_initial, memctx );
 872                 if ( f->f_sub_any ) {
 873                         int i;
 874                         for ( i = 0; !BER_BVISNULL( &f->f_sub_any[i] ); i++ );
 875                         n->f_sub_any = mf->bmf_malloc(( i+1 )*sizeof( struct berval ),
 876                                 memctx );
 877                         for ( i = 0; !BER_BVISNULL( &f->f_sub_any[i] ); i++ ) {
 878                                 ber_dupbv_x( &n->f_sub_any[i], &f->f_sub_any[i], memctx );
 879                         }
 880                         BER_BVZERO( &n->f_sub_any[i] );
 881                 }
 882                 if ( !BER_BVISNULL( &f->f_sub_final ))
 883                         ber_dupbv_x( &n->f_sub_final, &f->f_sub_final, memctx );
 884                 break;
 885         case LDAP_FILTER_EXT: {
 886                 /* Should this be mra_dup() ? */
 887                 ber_len_t length;
 888                 length = sizeof(MatchingRuleAssertion);
 889                 if ( !BER_BVISNULL( &f->f_mr_rule_text ))
 890                         length += f->f_mr_rule_text.bv_len + 1;
 891                 n->f_mra = mf->bmf_calloc( 1, length, memctx );
 892                 *n->f_mra = *f->f_mra;
 893                 if ( f->f_mr_desc && ( f->f_sub_desc->ad_flags & SLAP_DESC_TEMPORARY ))
 894                         n->f_mr_desc = slap_bv2tmp_ad( &f->f_mr_desc->ad_cname, memctx );
 895                 ber_dupbv_x( &n->f_mr_value, &f->f_mr_value, memctx );
 896                 if ( !BER_BVISNULL( &f->f_mr_rule_text )) {
 897                         n->f_mr_rule_text.bv_val = (char *)(n->f_mra+1);
 898                         AC_MEMCPY(n->f_mr_rule_text.bv_val,
 899                                 f->f_mr_rule_text.bv_val, f->f_mr_rule_text.bv_len );
 900                 }
 901                 } break;
 902         case LDAP_FILTER_AND:
 903         case LDAP_FILTER_OR:
 904         case LDAP_FILTER_NOT: {
 905                 Filter **p;
 906                 for ( p = &n->f_list, f = f->f_list; f; f = f->f_next ) {
 907                         *p = filter_dup( f, memctx );
 908                         p = &(*p)->f_next;
 909                 }
 910                 } break;
 911         }
 912         return n;
 913 }
 914
 915 static int
 916 get_simple_vrFilter(
 917         Operation *op,
 918         BerElement *ber,
 919         ValuesReturnFilter **filt,
 920         const char **text )
 921 {
 922         ber_tag_t       tag;
 923         ber_len_t       len;
 924         int             err;
 925         ValuesReturnFilter vrf;
 926
 927         Debug( LDAP_DEBUG_FILTER, "begin get_simple_vrFilter\n", 0, 0, 0 );
 928
 929         tag = ber_peek_tag( ber, &len );
 930
 931         if( tag == LBER_ERROR ) {
 932                 *text = "error decoding filter";
 933                 return SLAPD_DISCONNECT;
 934         }
 935
 936         vrf.vrf_next = NULL;
 937
 938         err = LDAP_SUCCESS;
 939         vrf.vrf_choice = tag;
 940
 941         switch ( vrf.vrf_choice ) {
 942         case LDAP_FILTER_EQUALITY:
 943                 Debug( LDAP_DEBUG_FILTER, "EQUALITY\n", 0, 0, 0 );
 944                 err = get_ava( op, ber, (Filter *)&vrf, SLAP_MR_EQUALITY, text );
 945                 if ( err != LDAP_SUCCESS ) {
 946                         break;
 947                 }
 948
 949                 assert( vrf.vrf_ava != NULL );
 950                 break;
 951
 952         case LDAP_FILTER_SUBSTRINGS:
 953                 Debug( LDAP_DEBUG_FILTER, "SUBSTRINGS\n", 0, 0, 0 );
 954                 err = get_ssa( op, ber, (Filter *)&vrf, text );
 955                 break;
 956
 957         case LDAP_FILTER_GE:
 958                 Debug( LDAP_DEBUG_FILTER, "GE\n", 0, 0, 0 );
 959                 err = get_ava( op, ber, (Filter *)&vrf, SLAP_MR_ORDERING, text );
 960                 if ( err != LDAP_SUCCESS ) {
 961                         break;
 962                 }
 963                 break;
 964
 965         case LDAP_FILTER_LE:
 966                 Debug( LDAP_DEBUG_FILTER, "LE\n", 0, 0, 0 );
 967                 err = get_ava( op, ber, (Filter *)&vrf, SLAP_MR_ORDERING, text );
 968                 if ( err != LDAP_SUCCESS ) {
 969                         break;
 970                 }
 971                 break;
 972
 973         case LDAP_FILTER_PRESENT: {
 974                 struct berval type;
 975
 976                 Debug( LDAP_DEBUG_FILTER, "PRESENT\n", 0, 0, 0 );
 977                 if ( ber_scanf( ber, "m", &type ) == LBER_ERROR ) {
 978                         err = SLAPD_DISCONNECT;
 979                         *text = "error decoding filter";
 980                         break;
 981                 }
 982
 983                 vrf.vrf_desc = NULL;
 984                 err = slap_bv2ad( &type, &vrf.vrf_desc, text );
 985
 986                 if( err != LDAP_SUCCESS ) {
 987                         vrf.vrf_choice |= SLAPD_FILTER_UNDEFINED;
 988                         err = slap_bv2undef_ad( &type, &vrf.vrf_desc, text,
 989                                 SLAP_AD_PROXIED);
 990
 991                         if( err != LDAP_SUCCESS ) {
 992                                 /* unrecognized attribute description or other error */
 993                                 Debug( LDAP_DEBUG_ANY,
 994                                         "get_simple_vrFilter: conn %lu unknown "
 995                                         "attribute type=%s (%d)\n",
 996                                         op->o_connid, type.bv_val, err );
 997
 998                                 vrf.vrf_choice = SLAPD_FILTER_COMPUTED;
 999                                 vrf.vrf_result = LDAP_COMPARE_FALSE;
1000                                 err = LDAP_SUCCESS;
1001                                 break;
1002                         }
1003                 }
1004                 } break;
1005
1006         case LDAP_FILTER_APPROX:
1007                 Debug( LDAP_DEBUG_FILTER, "APPROX\n", 0, 0, 0 );
1008                 err = get_ava( op, ber, (Filter *)&vrf, SLAP_MR_EQUALITY_APPROX, text );
1009                 if ( err != LDAP_SUCCESS ) {
1010                         break;
1011                 }
1012                 break;
1013
1014         case LDAP_FILTER_EXT:
1015                 Debug( LDAP_DEBUG_FILTER, "EXTENSIBLE\n", 0, 0, 0 );
1016
1017                 err = get_mra( op, ber, (Filter *)&vrf, text );
1018                 if ( err != LDAP_SUCCESS ) {
1019                         break;
1020                 }
1021
1022                 assert( vrf.vrf_mra != NULL );
1023                 break;
1024
1025         default:
1026                 (void) ber_scanf( ber, "x" ); /* skip the element */
1027                 Debug( LDAP_DEBUG_ANY, "get_simple_vrFilter: unknown filter type=%lu\n",
1028                         vrf.vrf_choice, 0, 0 );
1029                 vrf.vrf_choice = SLAPD_FILTER_COMPUTED;
1030                 vrf.vrf_result = SLAPD_COMPARE_UNDEFINED;
1031                 break;
1032         }
1033
1034         if ( err != LDAP_SUCCESS && err != SLAPD_DISCONNECT ) {
1035                 /* ignore error */
1036                 vrf.vrf_choice = SLAPD_FILTER_COMPUTED;
1037                 vrf.vrf_result = SLAPD_COMPARE_UNDEFINED;
1038                 err = LDAP_SUCCESS;
1039         }
1040
1041         if ( err == LDAP_SUCCESS ) {
1042                 *filt = op->o_tmpalloc( sizeof vrf, op->o_tmpmemctx );
1043                 **filt = vrf;
1044         }
1045
1046         Debug( LDAP_DEBUG_FILTER, "end get_simple_vrFilter %d\n", err, 0, 0 );
1047
1048         return err;
1049 }
1050
1051 int
1052 get_vrFilter( Operation *op, BerElement *ber,
1053         ValuesReturnFilter **vrf,
1054         const char **text )
1055 {
1056         /*
1057          * A ValuesReturnFilter looks like this:
1058          *
1059          *      ValuesReturnFilter ::= SEQUENCE OF SimpleFilterItem
1060          *      SimpleFilterItem ::= CHOICE {
1061          *              equalityMatch   [3]     AttributeValueAssertion,
1062          *              substrings      [4]     SubstringFilter,
1063          *              greaterOrEqual  [5]     AttributeValueAssertion,
1064          *              lessOrEqual     [6]     AttributeValueAssertion,
1065          *              present         [7]     AttributeType,
1066          *              approxMatch     [8]     AttributeValueAssertion,
1067          *              extensibleMatch [9]     SimpleMatchingAssertion -- LDAPv3
1068          *      }
1069          *
1070          *      SubstringFilter ::= SEQUENCE {
1071          *              type               AttributeType,
1072          *              SEQUENCE OF CHOICE {
1073          *                      initial          [0] IA5String,
1074          *                      any              [1] IA5String,
1075          *                      final            [2] IA5String
1076          *              }
1077          *      }
1078          *
1079          *      SimpleMatchingAssertion ::= SEQUENCE {  -- LDAPv3
1080          *              matchingRule    [1] MatchingRuleId OPTIONAL,
1081          *              type            [2] AttributeDescription OPTIONAL,
1082          *              matchValue      [3] AssertionValue }
1083          */
1084
1085         ValuesReturnFilter **n;
1086         ber_tag_t       tag;
1087         ber_len_t       len;
1088         char            *last;
1089
1090         Debug( LDAP_DEBUG_FILTER, "begin get_vrFilter\n", 0, 0, 0 );
1091
1092         tag = ber_peek_tag( ber, &len );
1093
1094         if( tag == LBER_ERROR ) {
1095                 *text = "error decoding vrFilter";
1096                 return SLAPD_DISCONNECT;
1097         }
1098
1099         if( tag != LBER_SEQUENCE ) {
1100                 *text = "error decoding vrFilter, expect SEQUENCE tag";
1101                 return SLAPD_DISCONNECT;
1102         }
1103
1104         n = vrf;
1105         for ( tag = ber_first_element( ber, &len, &last );
1106                 tag != LBER_DEFAULT;
1107                 tag = ber_next_element( ber, &len, last ) )
1108         {
1109                 int err = get_simple_vrFilter( op, ber, n, text );
1110
1111                 if ( err != LDAP_SUCCESS ) return( err );
1112
1113                 n = &(*n)->vrf_next;
1114         }
1115         *n = NULL;
1116
1117         Debug( LDAP_DEBUG_FILTER, "end get_vrFilter\n", 0, 0, 0 );
1118         return( LDAP_SUCCESS );
1119 }
1120
1121 void
1122 vrFilter_free( Operation *op, ValuesReturnFilter *vrf )
1123 {
1124         ValuesReturnFilter      *p, *next;
1125
1126         if ( vrf == NULL ) {
1127                 return;
1128         }
1129
1130         for ( p = vrf; p != NULL; p = next ) {
1131                 next = p->vrf_next;
1132
1133                 switch ( vrf->vrf_choice & SLAPD_FILTER_MASK ) {
1134                 case LDAP_FILTER_PRESENT:
1135                         break;
1136
1137                 case LDAP_FILTER_EQUALITY:
1138                 case LDAP_FILTER_GE:
1139                 case LDAP_FILTER_LE:
1140                 case LDAP_FILTER_APPROX:
1141                         ava_free( op, vrf->vrf_ava, 1 );
1142                         break;
1143
1144                 case LDAP_FILTER_SUBSTRINGS:
1145                         if ( vrf->vrf_sub_initial.bv_val != NULL ) {
1146                                 op->o_tmpfree( vrf->vrf_sub_initial.bv_val, op->o_tmpmemctx );
1147                         }
1148                         ber_bvarray_free_x( vrf->vrf_sub_any, op->o_tmpmemctx );
1149                         if ( vrf->vrf_sub_final.bv_val != NULL ) {
1150                                 op->o_tmpfree( vrf->vrf_sub_final.bv_val, op->o_tmpmemctx );
1151                         }
1152                         op->o_tmpfree( vrf->vrf_sub, op->o_tmpmemctx );
1153                         break;
1154
1155                 case LDAP_FILTER_EXT:
1156                         mra_free( op, vrf->vrf_mra, 1 );
1157                         break;
1158
1159                 case SLAPD_FILTER_COMPUTED:
1160                         break;
1161
1162                 default:
1163                         Debug( LDAP_DEBUG_ANY, "filter_free: unknown filter type=%lu\n",
1164                                 vrf->vrf_choice, 0, 0 );
1165                         break;
1166                 }
1167
1168                 op->o_tmpfree( vrf, op->o_tmpmemctx );
1169         }
1170 }
1171
1172 void
1173 vrFilter2bv( Operation *op, ValuesReturnFilter *vrf, struct berval *fstr )
1174 {
1175         ValuesReturnFilter      *p;
1176         struct berval tmp;
1177         ber_len_t len;
1178
1179         if ( vrf == NULL ) {
1180                 ber_str2bv_x( "No filter!", STRLENOF("No filter!"),
1181                         1, fstr, op->o_tmpmemctx );
1182                 return;
1183         }
1184
1185         fstr->bv_len = STRLENOF("()");
1186         fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 128, op->o_tmpmemctx );
1187
1188         snprintf( fstr->bv_val, fstr->bv_len + 1, "()");
1189
1190         for ( p = vrf; p != NULL; p = p->vrf_next ) {
1191                 len = fstr->bv_len;
1192
1193                 simple_vrFilter2bv( op, p, &tmp );
1194
1195                 fstr->bv_len += tmp.bv_len;
1196                 fstr->bv_val = op->o_tmprealloc( fstr->bv_val, fstr->bv_len + 1,
1197                         op->o_tmpmemctx );
1198
1199                 snprintf( &fstr->bv_val[len-1], tmp.bv_len + 2,
1200                         /*"("*/ "%s)", tmp.bv_val );
1201
1202                 op->o_tmpfree( tmp.bv_val, op->o_tmpmemctx );
1203         }
1204 }
1205
1206 static void
1207 simple_vrFilter2bv( Operation *op, ValuesReturnFilter *vrf, struct berval *fstr )
1208 {
1209         struct berval tmp;
1210         ber_len_t len;
1211         int undef;
1212
1213         if ( vrf == NULL ) {
1214                 ber_str2bv_x( "No filter!", STRLENOF("No filter!"), 1, fstr,
1215                         op->o_tmpmemctx );
1216                 return;
1217         }
1218         undef = vrf->vrf_choice & SLAPD_FILTER_UNDEFINED;
1219
1220         switch ( vrf->vrf_choice & SLAPD_FILTER_MASK ) {
1221         case LDAP_FILTER_EQUALITY:
1222                 filter_escape_value_x( &vrf->vrf_av_value, &tmp, op->o_tmpmemctx );
1223
1224                 fstr->bv_len = vrf->vrf_av_desc->ad_cname.bv_len +
1225                         tmp.bv_len + STRLENOF("(=)");
1226                 if ( undef ) fstr->bv_len++;
1227                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
1228
1229                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=%s)",
1230                         vrf->vrf_av_desc->ad_cname.bv_val,
1231                         tmp.bv_val );
1232
1233                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1234                 break;
1235
1236         case LDAP_FILTER_GE:
1237                 filter_escape_value_x( &vrf->vrf_av_value, &tmp, op->o_tmpmemctx );
1238
1239                 fstr->bv_len = vrf->vrf_av_desc->ad_cname.bv_len +
1240                         tmp.bv_len + STRLENOF("(>=)");
1241                 if ( undef ) fstr->bv_len++;
1242                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
1243
1244                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s>=%s)",
1245                         vrf->vrf_av_desc->ad_cname.bv_val,
1246                         tmp.bv_val );
1247
1248                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1249                 break;
1250
1251         case LDAP_FILTER_LE:
1252                 filter_escape_value_x( &vrf->vrf_av_value, &tmp, op->o_tmpmemctx );
1253
1254                 fstr->bv_len = vrf->vrf_av_desc->ad_cname.bv_len +
1255                         tmp.bv_len + STRLENOF("(<=)");
1256                 if ( undef ) fstr->bv_len++;
1257                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
1258
1259                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s<=%s)",
1260                         vrf->vrf_av_desc->ad_cname.bv_val,
1261                         tmp.bv_val );
1262
1263                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1264                 break;
1265
1266         case LDAP_FILTER_APPROX:
1267                 filter_escape_value_x( &vrf->vrf_av_value, &tmp, op->o_tmpmemctx );
1268
1269                 fstr->bv_len = vrf->vrf_av_desc->ad_cname.bv_len +
1270                         tmp.bv_len + STRLENOF("(~=)");
1271                 if ( undef ) fstr->bv_len++;
1272                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
1273
1274                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s~=%s)",
1275                         vrf->vrf_av_desc->ad_cname.bv_val,
1276                         tmp.bv_val );
1277                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1278                 break;
1279
1280         case LDAP_FILTER_SUBSTRINGS:
1281                 fstr->bv_len = vrf->vrf_sub_desc->ad_cname.bv_len +
1282                         STRLENOF("(=*)");
1283                 if ( undef ) fstr->bv_len++;
1284                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 128, op->o_tmpmemctx );
1285
1286                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
1287                         vrf->vrf_sub_desc->ad_cname.bv_val );
1288
1289                 if ( vrf->vrf_sub_initial.bv_val != NULL ) {
1290                         len = fstr->bv_len;
1291
1292                         filter_escape_value_x( &vrf->vrf_sub_initial, &tmp, op->o_tmpmemctx );
1293
1294                         fstr->bv_len += tmp.bv_len;
1295                         fstr->bv_val = op->o_tmprealloc( fstr->bv_val, fstr->bv_len + 1,
1296                                 op->o_tmpmemctx );
1297
1298                         snprintf( &fstr->bv_val[len-2], tmp.bv_len+3,
1299                                 /* "(attr=" */ "%s*)",
1300                                 tmp.bv_val );
1301
1302                         ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1303                 }
1304
1305                 if ( vrf->vrf_sub_any != NULL ) {
1306                         int i;
1307                         for ( i = 0; vrf->vrf_sub_any[i].bv_val != NULL; i++ ) {
1308                                 len = fstr->bv_len;
1309                                 filter_escape_value_x( &vrf->vrf_sub_any[i], &tmp,
1310                                         op->o_tmpmemctx );
1311
1312                                 fstr->bv_len += tmp.bv_len + 1;
1313                                 fstr->bv_val = op->o_tmprealloc( fstr->bv_val,
1314                                         fstr->bv_len + 1, op->o_tmpmemctx );
1315
1316                                 snprintf( &fstr->bv_val[len-1], tmp.bv_len+3,
1317                                         /* "(attr=[init]*[any*]" */ "%s*)",
1318                                         tmp.bv_val );
1319                                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1320                         }
1321                 }
1322
1323                 if ( vrf->vrf_sub_final.bv_val != NULL ) {
1324                         len = fstr->bv_len;
1325
1326                         filter_escape_value_x( &vrf->vrf_sub_final, &tmp, op->o_tmpmemctx );
1327
1328                         fstr->bv_len += tmp.bv_len;
1329                         fstr->bv_val = op->o_tmprealloc( fstr->bv_val, fstr->bv_len + 1,
1330                                 op->o_tmpmemctx );
1331
1332                         snprintf( &fstr->bv_val[len-1], tmp.bv_len+3,
1333                                 /* "(attr=[init*][any*]" */ "%s)",
1334                                 tmp.bv_val );
1335
1336                         ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1337                 }
1338
1339                 break;
1340
1341         case LDAP_FILTER_PRESENT:
1342                 fstr->bv_len = vrf->vrf_desc->ad_cname.bv_len +
1343                         STRLENOF("(=*)");
1344                 if ( undef ) fstr->bv_len++;
1345                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
1346
1347                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
1348                         vrf->vrf_desc->ad_cname.bv_val );
1349                 break;
1350
1351         case LDAP_FILTER_EXT: {
1352                 struct berval ad;
1353                 filter_escape_value_x( &vrf->vrf_mr_value, &tmp, op->o_tmpmemctx );
1354
1355                 if ( vrf->vrf_mr_desc ) {
1356                         ad = vrf->vrf_mr_desc->ad_cname;
1357                 } else {
1358                         ad.bv_len = 0;
1359                         ad.bv_val = "";
1360                 }
1361
1362                 fstr->bv_len = ad.bv_len +
1363                         ( vrf->vrf_mr_dnattrs ? STRLENOF(":dn") : 0 ) +
1364                         ( vrf->vrf_mr_rule_text.bv_len
1365                                 ? vrf->vrf_mr_rule_text.bv_len+1 : 0 ) +
1366                         tmp.bv_len + STRLENOF("(:=)");
1367                 if ( undef ) fstr->bv_len++;
1368                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
1369
1370                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s%s%s:=%s)",
1371                         ad.bv_val,
1372                         vrf->vrf_mr_dnattrs ? ":dn" : "",
1373                         vrf->vrf_mr_rule_text.bv_len ? ":" : "",
1374                         vrf->vrf_mr_rule_text.bv_len ? vrf->vrf_mr_rule_text.bv_val : "",
1375                         tmp.bv_val );
1376
1377                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1378                 } break;
1379
1380         case SLAPD_FILTER_COMPUTED:
1381                 ber_str2bv_x(
1382                         vrf->vrf_result == LDAP_COMPARE_FALSE ? "(?=false)" :
1383                         vrf->vrf_result == LDAP_COMPARE_TRUE ? "(?=true)" :
1384                         vrf->vrf_result == SLAPD_COMPARE_UNDEFINED
1385                                 ? "(?=undefined)" : "(?=error)",
1386                         vrf->vrf_result == LDAP_COMPARE_FALSE ? STRLENOF("(?=false)") :
1387                         vrf->vrf_result == LDAP_COMPARE_TRUE ? STRLENOF("(?=true)") :
1388                         vrf->vrf_result == SLAPD_COMPARE_UNDEFINED
1389                                 ? STRLENOF("(?=undefined)") : STRLENOF("(?=error)"),
1390                         1, fstr, op->o_tmpmemctx );
1391                 break;
1392
1393         default:
1394                 ber_str2bv_x( "(?=unknown)", STRLENOF("(?=unknown)"),
1395                         1, fstr, op->o_tmpmemctx );
1396                 break;
1397         }
1398 }