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 1998-2006 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
  36 static int      get_filter_list(
  37         Operation *op,
  38         BerElement *ber,
  39         Filter **f,
  40         const char **text );
  41
  42 static int      get_ssa(
  43         Operation *op,
  44         BerElement *ber,
  45         SubstringsAssertion **s,
  46         const char **text );
  47
  48 static void simple_vrFilter2bv(
  49         Operation *op,
  50         ValuesReturnFilter *f,
  51         struct berval *fstr );
  52
  53 static int      get_simple_vrFilter(
  54         Operation *op,
  55         BerElement *ber,
  56         ValuesReturnFilter **f,
  57         const char **text );
  58
  59 int
  60 get_filter(
  61         Operation *op,
  62         BerElement *ber,
  63         Filter **filt,
  64         const char **text )
  65 {
  66         ber_tag_t       tag;
  67         ber_len_t       len;
  68         int             err;
  69         Filter          f;
  70
  71         Debug( LDAP_DEBUG_FILTER, "begin get_filter\n", 0, 0, 0 );
  72         /*
  73          * A filter looks like this coming in:
  74          *      Filter ::= CHOICE {
  75          *              and             [0]     SET OF Filter,
  76          *              or              [1]     SET OF Filter,
  77          *              not             [2]     Filter,
  78          *              equalityMatch   [3]     AttributeValueAssertion,
  79          *              substrings      [4]     SubstringFilter,
  80          *              greaterOrEqual  [5]     AttributeValueAssertion,
  81          *              lessOrEqual     [6]     AttributeValueAssertion,
  82          *              present         [7]     AttributeType,,
  83          *              approxMatch     [8]     AttributeValueAssertion
  84          *              extensibleMatch [9]     MatchingRuleAssertion
  85          *      }
  86          *
  87          *      SubstringFilter ::= SEQUENCE {
  88          *              type               AttributeType,
  89          *              SEQUENCE OF CHOICE {
  90          *                      initial          [0] IA5String,
  91          *                      any              [1] IA5String,
  92          *                      final            [2] IA5String
  93          *              }
  94          *      }
  95          *
  96          *      MatchingRuleAssertion ::= SEQUENCE {
  97          *              matchingRule    [1] MatchingRuleId OPTIONAL,
  98          *              type            [2] AttributeDescription OPTIONAL,
  99          *              matchValue      [3] AssertionValue,
 100          *              dnAttributes    [4] BOOLEAN DEFAULT FALSE
 101          *      }
 102          *
 103          */
 104
 105         tag = ber_peek_tag( ber, &len );
 106
 107         if( tag == LBER_ERROR ) {
 108                 *text = "error decoding filter";
 109                 return SLAPD_DISCONNECT;
 110         }
 111
 112         err = LDAP_SUCCESS;
 113
 114         f.f_next = NULL;
 115         f.f_choice = tag;
 116
 117         switch ( f.f_choice ) {
 118         case LDAP_FILTER_EQUALITY:
 119                 Debug( LDAP_DEBUG_FILTER, "EQUALITY\n", 0, 0, 0 );
 120                 err = get_ava( op, ber, &f.f_ava, SLAP_MR_EQUALITY, text );
 121                 if ( err != LDAP_SUCCESS ) {
 122                         break;
 123                 }
 124
 125                 assert( f.f_ava != NULL );
 126                 break;
 127
 128         case LDAP_FILTER_SUBSTRINGS:
 129                 Debug( LDAP_DEBUG_FILTER, "SUBSTRINGS\n", 0, 0, 0 );
 130                 err = get_ssa( op, ber, &f.f_sub, text );
 131                 if( err != LDAP_SUCCESS ) {
 132                         break;
 133                 }
 134                 assert( f.f_sub != NULL );
 135                 break;
 136
 137         case LDAP_FILTER_GE:
 138                 Debug( LDAP_DEBUG_FILTER, "GE\n", 0, 0, 0 );
 139                 err = get_ava( op, ber, &f.f_ava, SLAP_MR_ORDERING, text );
 140                 if ( err != LDAP_SUCCESS ) {
 141                         break;
 142                 }
 143                 assert( f.f_ava != NULL );
 144                 break;
 145
 146         case LDAP_FILTER_LE:
 147                 Debug( LDAP_DEBUG_FILTER, "LE\n", 0, 0, 0 );
 148                 err = get_ava( op, ber, &f.f_ava, SLAP_MR_ORDERING, text );
 149                 if ( err != LDAP_SUCCESS ) {
 150                         break;
 151                 }
 152                 assert( f.f_ava != NULL );
 153                 break;
 154
 155         case LDAP_FILTER_PRESENT: {
 156                 struct berval type;
 157
 158                 Debug( LDAP_DEBUG_FILTER, "PRESENT\n", 0, 0, 0 );
 159                 if ( ber_scanf( ber, "m", &type ) == LBER_ERROR ) {
 160                         err = SLAPD_DISCONNECT;
 161                         *text = "error decoding filter";
 162                         break;
 163                 }
 164
 165                 f.f_desc = NULL;
 166                 err = slap_bv2ad( &type, &f.f_desc, text );
 167
 168                 if( err != LDAP_SUCCESS ) {
 169                         err = slap_bv2undef_ad( &type, &f.f_desc, text,
 170                                 SLAP_AD_PROXIED|SLAP_AD_NOINSERT );
 171
 172                         if ( err != LDAP_SUCCESS ) {
 173                                 /* unrecognized attribute description or other error */
 174                                 Debug( LDAP_DEBUG_ANY,
 175                                         "get_filter: conn %lu unknown attribute "
 176                                         "type=%s (%d)\n",
 177                                         op->o_connid, type.bv_val, err );
 178
 179                                 f.f_choice = SLAPD_FILTER_COMPUTED;
 180                                 f.f_result = LDAP_COMPARE_FALSE;
 181                                 err = LDAP_SUCCESS;
 182                                 *text = NULL;
 183                                 break;
 184                         }
 185                 }
 186
 187                 assert( f.f_desc != NULL );
 188                 } break;
 189
 190         case LDAP_FILTER_APPROX:
 191                 Debug( LDAP_DEBUG_FILTER, "APPROX\n", 0, 0, 0 );
 192                 err = get_ava( op, ber, &f.f_ava, SLAP_MR_EQUALITY_APPROX, text );
 193                 if ( err != LDAP_SUCCESS ) {
 194                         break;
 195                 }
 196                 assert( f.f_ava != NULL );
 197                 break;
 198
 199         case LDAP_FILTER_AND:
 200                 Debug( LDAP_DEBUG_FILTER, "AND\n", 0, 0, 0 );
 201                 err = get_filter_list( op, ber, &f.f_and, text );
 202                 if ( err != LDAP_SUCCESS ) {
 203                         break;
 204                 }
 205                 if ( f.f_and == NULL ) {
 206                         f.f_choice = SLAPD_FILTER_COMPUTED;
 207                         f.f_result = LDAP_COMPARE_TRUE;
 208                 }
 209                 /* no assert - list could be empty */
 210                 break;
 211
 212         case LDAP_FILTER_OR:
 213                 Debug( LDAP_DEBUG_FILTER, "OR\n", 0, 0, 0 );
 214                 err = get_filter_list( op, ber, &f.f_or, text );
 215                 if ( err != LDAP_SUCCESS ) {
 216                         break;
 217                 }
 218                 if ( f.f_or == NULL ) {
 219                         f.f_choice = SLAPD_FILTER_COMPUTED;
 220                         f.f_result = LDAP_COMPARE_FALSE;
 221                 }
 222                 /* no assert - list could be empty */
 223                 break;
 224
 225         case LDAP_FILTER_NOT:
 226                 Debug( LDAP_DEBUG_FILTER, "NOT\n", 0, 0, 0 );
 227                 (void) ber_skip_tag( ber, &len );
 228                 err = get_filter( op, ber, &f.f_not, text );
 229                 if ( err != LDAP_SUCCESS ) {
 230                         break;
 231                 }
 232
 233                 assert( f.f_not != NULL );
 234                 if ( f.f_not->f_choice == SLAPD_FILTER_COMPUTED ) {
 235                         int fresult = f.f_not->f_result;
 236                         f.f_choice = SLAPD_FILTER_COMPUTED;
 237                         op->o_tmpfree( f.f_not, op->o_tmpmemctx );
 238                         f.f_not = NULL;
 239
 240                         switch( fresult ) {
 241                         case LDAP_COMPARE_TRUE:
 242                                 f.f_result = LDAP_COMPARE_FALSE;
 243                                 break;
 244                         case LDAP_COMPARE_FALSE:
 245                                 f.f_result = LDAP_COMPARE_TRUE;
 246                                 break;
 247                         default: ;
 248                                 /* (!Undefined) is Undefined */
 249                         }
 250                 }
 251                 break;
 252
 253         case LDAP_FILTER_EXT:
 254                 Debug( LDAP_DEBUG_FILTER, "EXTENSIBLE\n", 0, 0, 0 );
 255
 256                 err = get_mra( op, ber, &f.f_mra, text );
 257                 if ( err != LDAP_SUCCESS ) {
 258                         break;
 259                 }
 260
 261                 assert( f.f_mra != NULL );
 262                 break;
 263
 264         default:
 265                 (void) ber_scanf( ber, "x" ); /* skip the element */
 266                 Debug( LDAP_DEBUG_ANY, "get_filter: unknown filter type=%lu\n",
 267                         f.f_choice, 0, 0 );
 268                 f.f_choice = SLAPD_FILTER_COMPUTED;
 269                 f.f_result = SLAPD_COMPARE_UNDEFINED;
 270                 break;
 271         }
 272
 273         if( err != LDAP_SUCCESS && err != SLAPD_DISCONNECT ) {
 274                 /* ignore error */
 275                 *text = NULL;
 276                 f.f_choice = SLAPD_FILTER_COMPUTED;
 277                 f.f_result = SLAPD_COMPARE_UNDEFINED;
 278                 err = LDAP_SUCCESS;
 279         }
 280
 281         if ( err == LDAP_SUCCESS ) {
 282                 *filt = op->o_tmpalloc( sizeof(f), op->o_tmpmemctx );
 283                 **filt = f;
 284         }
 285
 286         Debug( LDAP_DEBUG_FILTER, "end get_filter %d\n", err, 0, 0 );
 287
 288         return( err );
 289 }
 290
 291 static int
 292 get_filter_list( Operation *op, BerElement *ber,
 293         Filter **f,
 294         const char **text )
 295 {
 296         Filter          **new;
 297         int             err;
 298         ber_tag_t       tag;
 299         ber_len_t       len;
 300         char            *last;
 301
 302         Debug( LDAP_DEBUG_FILTER, "begin get_filter_list\n", 0, 0, 0 );
 303         new = f;
 304         for ( tag = ber_first_element( ber, &len, &last );
 305                 tag != LBER_DEFAULT;
 306                 tag = ber_next_element( ber, &len, last ) )
 307         {
 308                 err = get_filter( op, ber, new, text );
 309                 if ( err != LDAP_SUCCESS )
 310                         return( err );
 311                 new = &(*new)->f_next;
 312         }
 313         *new = NULL;
 314
 315         Debug( LDAP_DEBUG_FILTER, "end get_filter_list\n", 0, 0, 0 );
 316         return( LDAP_SUCCESS );
 317 }
 318
 319 static int
 320 get_ssa(
 321         Operation *op,
 322         BerElement      *ber,
 323         SubstringsAssertion     **out,
 324         const char      **text )
 325 {
 326         ber_tag_t       tag;
 327         ber_len_t       len;
 328         ber_tag_t       rc;
 329         struct berval desc, value, nvalue;
 330         char            *last;
 331         SubstringsAssertion ssa;
 332
 333         *text = "error decoding filter";
 334         *out = NULL;
 335
 336         Debug( LDAP_DEBUG_FILTER, "begin get_ssa\n", 0, 0, 0 );
 337         if ( ber_scanf( ber, "{m" /*}*/, &desc ) == LBER_ERROR ) {
 338                 return SLAPD_DISCONNECT;
 339         }
 340
 341         *text = NULL;
 342
 343         ssa.sa_desc = NULL;
 344         ssa.sa_initial.bv_val = NULL;
 345         ssa.sa_any = NULL;
 346         ssa.sa_final.bv_val = NULL;
 347
 348         rc = slap_bv2ad( &desc, &ssa.sa_desc, text );
 349
 350         if( rc != LDAP_SUCCESS ) {
 351                 rc = slap_bv2undef_ad( &desc, &ssa.sa_desc, text,
 352                         SLAP_AD_PROXIED|SLAP_AD_NOINSERT );
 353
 354                 if( rc != LDAP_SUCCESS ) {
 355                         Debug( LDAP_DEBUG_ANY,
 356                                 "get_ssa: conn %lu unknown attribute type=%s (%ld)\n",
 357                                 op->o_connid, desc.bv_val, (long) rc );
 358
 359                         /* skip over the rest of this filter */
 360                         for ( tag = ber_first_element( ber, &len, &last );
 361                                 tag != LBER_DEFAULT;
 362                                 tag = ber_next_element( ber, &len, last ) ) {
 363                                 ber_scanf( ber, "x" );
 364                         }
 365                         return rc;
 366                 }
 367         }
 368
 369         rc = LDAP_PROTOCOL_ERROR;
 370
 371         for ( tag = ber_first_element( ber, &len, &last );
 372                 tag != LBER_DEFAULT;
 373                 tag = ber_next_element( ber, &len, last ) )
 374         {
 375                 unsigned usage;
 376
 377                 rc = ber_scanf( ber, "m", &value );
 378                 if ( rc == LBER_ERROR ) {
 379                         rc = SLAPD_DISCONNECT;
 380                         goto return_error;
 381                 }
 382
 383                 if ( value.bv_val == NULL || value.bv_len == 0 ) {
 384                         rc = LDAP_INVALID_SYNTAX;
 385                         goto return_error;
 386                 }
 387
 388                 switch ( tag ) {
 389                 case LDAP_SUBSTRING_INITIAL:
 390                         if ( ssa.sa_initial.bv_val != NULL
 391                                 || ssa.sa_any != NULL
 392                                 || ssa.sa_final.bv_val != NULL )
 393                         {
 394                                 rc = LDAP_PROTOCOL_ERROR;
 395                                 goto return_error;
 396                         }
 397                         usage = SLAP_MR_SUBSTR_INITIAL;
 398                         break;
 399
 400                 case LDAP_SUBSTRING_ANY:
 401                         if ( ssa.sa_final.bv_val != NULL ) {
 402                                 rc = LDAP_PROTOCOL_ERROR;
 403                                 goto return_error;
 404                         }
 405                         usage = SLAP_MR_SUBSTR_ANY;
 406                         break;
 407
 408                 case LDAP_SUBSTRING_FINAL:
 409                         if ( ssa.sa_final.bv_val != NULL ) {
 410                                 rc = LDAP_PROTOCOL_ERROR;
 411                                 goto return_error;
 412                         }
 413
 414                         usage = SLAP_MR_SUBSTR_FINAL;
 415                         break;
 416
 417                 default:
 418                         Debug( LDAP_DEBUG_FILTER,
 419                                 "  unknown substring choice=%ld\n",
 420                                 (long) tag, 0, 0 );
 421
 422                         rc = LDAP_PROTOCOL_ERROR;
 423                         goto return_error;
 424                 }
 425
 426                 /* validate/normalize using equality matching rule validator! */
 427                 rc = asserted_value_validate_normalize(
 428                         ssa.sa_desc, ssa.sa_desc->ad_type->sat_equality,
 429                         usage, &value, &nvalue, text, op->o_tmpmemctx );
 430                 if( rc != LDAP_SUCCESS ) goto return_error;
 431
 432                 switch ( tag ) {
 433                 case LDAP_SUBSTRING_INITIAL:
 434                         Debug( LDAP_DEBUG_FILTER, "  INITIAL\n", 0, 0, 0 );
 435                         ssa.sa_initial = nvalue;
 436                         break;
 437
 438                 case LDAP_SUBSTRING_ANY:
 439                         Debug( LDAP_DEBUG_FILTER, "  ANY\n", 0, 0, 0 );
 440                         ber_bvarray_add_x( &ssa.sa_any, &nvalue, op->o_tmpmemctx );
 441                         break;
 442
 443                 case LDAP_SUBSTRING_FINAL:
 444                         Debug( LDAP_DEBUG_FILTER, "  FINAL\n", 0, 0, 0 );
 445                         ssa.sa_final = nvalue;
 446                         break;
 447
 448                 default:
 449                         assert( 0 );
 450                         slap_sl_free( nvalue.bv_val, op->o_tmpmemctx );
 451                         rc = LDAP_PROTOCOL_ERROR;
 452
 453 return_error:
 454                         Debug( LDAP_DEBUG_FILTER, "  error=%ld\n",
 455                                 (long) rc, 0, 0 );
 456                         slap_sl_free( ssa.sa_initial.bv_val, op->o_tmpmemctx );
 457                         ber_bvarray_free_x( ssa.sa_any, op->o_tmpmemctx );
 458                         slap_sl_free( ssa.sa_final.bv_val, op->o_tmpmemctx );
 459                         return rc;
 460                 }
 461
 462                 rc = LDAP_SUCCESS;
 463         }
 464
 465         if( rc == LDAP_SUCCESS ) {
 466                 *out = op->o_tmpalloc( sizeof( ssa ), op->o_tmpmemctx );
 467                 **out = ssa;
 468         }
 469
 470         Debug( LDAP_DEBUG_FILTER, "end get_ssa\n", 0, 0, 0 );
 471         return rc /* LDAP_SUCCESS */ ;
 472 }
 473
 474 void
 475 filter_free_x( Operation *op, Filter *f )
 476 {
 477         Filter  *p, *next;
 478
 479         if ( f == NULL ) {
 480                 return;
 481         }
 482
 483         switch ( f->f_choice ) {
 484         case LDAP_FILTER_PRESENT:
 485                 break;
 486
 487         case LDAP_FILTER_EQUALITY:
 488         case LDAP_FILTER_GE:
 489         case LDAP_FILTER_LE:
 490         case LDAP_FILTER_APPROX:
 491                 ava_free( op, f->f_ava, 1 );
 492                 break;
 493
 494         case LDAP_FILTER_SUBSTRINGS:
 495                 if ( f->f_sub_initial.bv_val != NULL ) {
 496                         op->o_tmpfree( f->f_sub_initial.bv_val, op->o_tmpmemctx );
 497                 }
 498                 ber_bvarray_free_x( f->f_sub_any, op->o_tmpmemctx );
 499                 if ( f->f_sub_final.bv_val != NULL ) {
 500                         op->o_tmpfree( f->f_sub_final.bv_val, op->o_tmpmemctx );
 501                 }
 502                 op->o_tmpfree( f->f_sub, op->o_tmpmemctx );
 503                 break;
 504
 505         case LDAP_FILTER_AND:
 506         case LDAP_FILTER_OR:
 507         case LDAP_FILTER_NOT:
 508                 for ( p = f->f_list; p != NULL; p = next ) {
 509                         next = p->f_next;
 510                         filter_free_x( op, p );
 511                 }
 512                 break;
 513
 514         case LDAP_FILTER_EXT:
 515                 mra_free( op, f->f_mra, 1 );
 516                 break;
 517
 518         case SLAPD_FILTER_COMPUTED:
 519                 break;
 520
 521         default:
 522                 Debug( LDAP_DEBUG_ANY, "filter_free: unknown filter type=%lu\n",
 523                         f->f_choice, 0, 0 );
 524                 break;
 525         }
 526
 527         op->o_tmpfree( f, op->o_tmpmemctx );
 528 }
 529
 530 void
 531 filter_free( Filter *f )
 532 {
 533         Operation op;
 534         Opheader ohdr;
 535
 536         op.o_hdr = &ohdr;
 537         op.o_tmpmemctx = slap_sl_context( f );
 538         op.o_tmpmfuncs = &slap_sl_mfuncs;
 539         filter_free_x( &op, f );
 540 }
 541
 542 void
 543 filter2bv_x( Operation *op, Filter *f, struct berval *fstr )
 544 {
 545         int             i;
 546         Filter          *p;
 547         struct berval   tmp;
 548         static struct berval
 549                         ber_bvfalse = BER_BVC( "(?=false)" ),
 550                         ber_bvtrue = BER_BVC( "(?=true)" ),
 551                         ber_bvundefined = BER_BVC( "(?=undefined)" ),
 552                         ber_bverror = BER_BVC( "(?=error)" ),
 553                         ber_bvunknown = BER_BVC( "(?=unknown)" ),
 554                         ber_bvnone = BER_BVC( "(?=none)" );
 555         ber_len_t       len;
 556
 557         if ( f == NULL ) {
 558                 ber_dupbv_x( fstr, &ber_bvnone, op->o_tmpmemctx );
 559                 return;
 560         }
 561
 562         switch ( f->f_choice ) {
 563         case LDAP_FILTER_EQUALITY:
 564                 filter_escape_value_x( &f->f_av_value, &tmp, op->o_tmpmemctx );
 565
 566                 fstr->bv_len = f->f_av_desc->ad_cname.bv_len +
 567                         tmp.bv_len + ( sizeof("(=)") - 1 );
 568                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
 569
 570                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=%s)",
 571                         f->f_av_desc->ad_cname.bv_val,
 572                         tmp.bv_len ? tmp.bv_val : "(null)");
 573
 574                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
 575                 break;
 576
 577         case LDAP_FILTER_GE:
 578                 filter_escape_value_x( &f->f_av_value, &tmp, op->o_tmpmemctx );
 579
 580                 fstr->bv_len = f->f_av_desc->ad_cname.bv_len +
 581                         tmp.bv_len + ( sizeof("(>=)") - 1 );
 582                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
 583
 584                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s>=%s)",
 585                         f->f_av_desc->ad_cname.bv_val,
 586                         tmp.bv_len ? tmp.bv_val : "(null)");
 587
 588                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
 589                 break;
 590
 591         case LDAP_FILTER_LE:
 592                 filter_escape_value_x( &f->f_av_value, &tmp, op->o_tmpmemctx );
 593
 594                 fstr->bv_len = f->f_av_desc->ad_cname.bv_len +
 595                         tmp.bv_len + ( sizeof("(<=)") - 1 );
 596                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
 597
 598                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s<=%s)",
 599                         f->f_av_desc->ad_cname.bv_val,
 600                         tmp.bv_len ? tmp.bv_val : "(null)");
 601
 602                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
 603                 break;
 604
 605         case LDAP_FILTER_APPROX:
 606                 filter_escape_value_x( &f->f_av_value, &tmp, op->o_tmpmemctx );
 607
 608                 fstr->bv_len = f->f_av_desc->ad_cname.bv_len +
 609                         tmp.bv_len + ( sizeof("(~=)") - 1 );
 610                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
 611
 612                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s~=%s)",
 613                         f->f_av_desc->ad_cname.bv_val,
 614                         tmp.bv_len ? tmp.bv_val : "(null)");
 615                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
 616                 break;
 617
 618         case LDAP_FILTER_SUBSTRINGS:
 619                 fstr->bv_len = f->f_sub_desc->ad_cname.bv_len +
 620                         ( sizeof("(=*)") - 1 );
 621                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 128, op->o_tmpmemctx );
 622
 623                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
 624                         f->f_sub_desc->ad_cname.bv_val );
 625
 626                 if ( f->f_sub_initial.bv_val != NULL ) {
 627                         len = fstr->bv_len;
 628
 629                         filter_escape_value_x( &f->f_sub_initial, &tmp, op->o_tmpmemctx );
 630
 631                         fstr->bv_len += tmp.bv_len;
 632                         fstr->bv_val = op->o_tmprealloc( fstr->bv_val, fstr->bv_len + 1,
 633                                 op->o_tmpmemctx );
 634
 635                         snprintf( &fstr->bv_val[len-2], tmp.bv_len+3,
 636                                 /* "(attr=" */ "%s*)",
 637                                 tmp.bv_len ? tmp.bv_val : "(null)");
 638
 639                         ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
 640                 }
 641
 642                 if ( f->f_sub_any != NULL ) {
 643                         for ( i = 0; f->f_sub_any[i].bv_val != NULL; i++ ) {
 644                                 len = fstr->bv_len;
 645                                 filter_escape_value_x( &f->f_sub_any[i],
 646                                         &tmp, op->o_tmpmemctx );
 647
 648                                 fstr->bv_len += tmp.bv_len + 1;
 649                                 fstr->bv_val = op->o_tmprealloc( fstr->bv_val, fstr->bv_len + 1,
 650                                         op->o_tmpmemctx );
 651
 652                                 snprintf( &fstr->bv_val[len-1], tmp.bv_len+3,
 653                                         /* "(attr=[init]*[any*]" */ "%s*)",
 654                                         tmp.bv_len ? tmp.bv_val : "(null)");
 655                                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
 656                         }
 657                 }
 658
 659                 if ( f->f_sub_final.bv_val != NULL ) {
 660                         len = fstr->bv_len;
 661
 662                         filter_escape_value_x( &f->f_sub_final, &tmp, op->o_tmpmemctx );
 663
 664                         fstr->bv_len += tmp.bv_len;
 665                         fstr->bv_val = op->o_tmprealloc( fstr->bv_val, fstr->bv_len + 1,
 666                                 op->o_tmpmemctx );
 667
 668                         snprintf( &fstr->bv_val[len-1], tmp.bv_len+3,
 669                                 /* "(attr=[init*][any*]" */ "%s)",
 670                                 tmp.bv_len ? tmp.bv_val : "(null)");
 671
 672                         ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
 673                 }
 674
 675                 break;
 676
 677         case LDAP_FILTER_PRESENT:
 678                 fstr->bv_len = f->f_desc->ad_cname.bv_len +
 679                         ( sizeof("(=*)") - 1 );
 680                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
 681
 682                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
 683                         f->f_desc->ad_cname.bv_val );
 684                 break;
 685
 686         case LDAP_FILTER_AND:
 687         case LDAP_FILTER_OR:
 688         case LDAP_FILTER_NOT:
 689                 fstr->bv_len = sizeof("(%)") - 1;
 690                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 128, op->o_tmpmemctx );
 691
 692                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%c)",
 693                         f->f_choice == LDAP_FILTER_AND ? '&' :
 694                         f->f_choice == LDAP_FILTER_OR ? '|' : '!' );
 695
 696                 for ( p = f->f_list; p != NULL; p = p->f_next ) {
 697                         len = fstr->bv_len;
 698
 699                         filter2bv_x( op, p, &tmp );
 700
 701                         fstr->bv_len += tmp.bv_len;
 702                         fstr->bv_val = op->o_tmprealloc( fstr->bv_val, fstr->bv_len + 1,
 703                                 op->o_tmpmemctx );
 704
 705                         snprintf( &fstr->bv_val[len-1], tmp.bv_len + 2,
 706                                 /*"("*/ "%s)", tmp.bv_val );
 707
 708                         op->o_tmpfree( tmp.bv_val, op->o_tmpmemctx );
 709                 }
 710
 711                 break;
 712
 713         case LDAP_FILTER_EXT: {
 714                         struct berval ad;
 715                         filter_escape_value_x( &f->f_mr_value, &tmp, op->o_tmpmemctx );
 716
 717                         if ( f->f_mr_desc ) {
 718                                 ad = f->f_mr_desc->ad_cname;
 719                         } else {
 720                                 ad.bv_len = 0;
 721                                 ad.bv_val = "";
 722                         }
 723
 724                         fstr->bv_len = ad.bv_len +
 725                                 ( f->f_mr_dnattrs ? sizeof(":dn")-1 : 0 ) +
 726                                 ( f->f_mr_rule_text.bv_len ? f->f_mr_rule_text.bv_len+1 : 0 ) +
 727                                 tmp.bv_len + ( sizeof("(:=)") - 1 );
 728                         fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
 729
 730                         snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s%s%s:=%s)",
 731                                 ad.bv_val,
 732                                 f->f_mr_dnattrs ? ":dn" : "",
 733                                 f->f_mr_rule_text.bv_len ? ":" : "",
 734                                 f->f_mr_rule_text.bv_len ? f->f_mr_rule_text.bv_val : "",
 735                                 tmp.bv_len ? tmp.bv_val : "(null)");
 736                         ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
 737                 } break;
 738
 739         case SLAPD_FILTER_COMPUTED:
 740                 switch ( f->f_result ) {
 741                 case LDAP_COMPARE_FALSE:
 742                         tmp = ber_bvfalse;
 743                         break;
 744
 745                 case LDAP_COMPARE_TRUE:
 746                         tmp = ber_bvtrue;
 747                         break;
 748
 749                 case SLAPD_COMPARE_UNDEFINED:
 750                         tmp = ber_bvundefined;
 751                         break;
 752
 753                 default:
 754                         tmp = ber_bverror;
 755                         break;
 756                 }
 757
 758                 ber_dupbv_x( fstr, &tmp, op->o_tmpmemctx );
 759                 break;
 760
 761         default:
 762                 ber_dupbv_x( fstr, &ber_bvunknown, op->o_tmpmemctx );
 763                 break;
 764         }
 765 }
 766
 767 void
 768 filter2bv( Filter *f, struct berval *fstr )
 769 {
 770         Operation op;
 771         Opheader ohdr;
 772
 773         op.o_hdr = &ohdr;
 774         op.o_tmpmemctx = NULL;
 775         op.o_tmpmfuncs = &ch_mfuncs;
 776
 777         filter2bv_x( &op, f, fstr );
 778 }
 779
 780 Filter *
 781 filter_dup( Filter *f, void *memctx )
 782 {
 783         BerMemoryFunctions *mf = &slap_sl_mfuncs;
 784         Filter *n;
 785
 786         if ( !f )
 787                 return NULL;
 788
 789         n = mf->bmf_malloc( sizeof(Filter), memctx );
 790         n->f_choice = f->f_choice;
 791         n->f_next = NULL;
 792
 793         switch( f->f_choice ) {
 794         case SLAPD_FILTER_COMPUTED:
 795                 n->f_result = f->f_result;
 796                 break;
 797         case LDAP_FILTER_PRESENT:
 798                 n->f_desc = f->f_desc;
 799                 break;
 800         case LDAP_FILTER_EQUALITY:
 801         case LDAP_FILTER_GE:
 802         case LDAP_FILTER_LE:
 803         case LDAP_FILTER_APPROX:
 804                 /* Should this be ava_dup() ? */
 805                 n->f_ava = mf->bmf_calloc( 1, sizeof(AttributeAssertion), memctx );
 806                 *n->f_ava = *f->f_ava;
 807                 ber_dupbv_x( &n->f_av_value, &f->f_av_value, memctx );
 808                 break;
 809         case LDAP_FILTER_SUBSTRINGS:
 810                 n->f_sub = mf->bmf_calloc( 1, sizeof(SubstringsAssertion), memctx );
 811                 n->f_sub_desc = f->f_sub_desc;
 812                 if ( !BER_BVISNULL( &f->f_sub_initial ))
 813                         ber_dupbv_x( &n->f_sub_initial, &f->f_sub_initial, memctx );
 814                 if ( f->f_sub_any ) {
 815                         int i;
 816                         for ( i = 0; !BER_BVISNULL( &f->f_sub_any[i] ); i++ );
 817                         n->f_sub_any = mf->bmf_malloc(( i+1 )*sizeof( struct berval ),
 818                                 memctx );
 819                         for ( i = 0; !BER_BVISNULL( &f->f_sub_any[i] ); i++ ) {
 820                                 ber_dupbv_x( &n->f_sub_any[i], &f->f_sub_any[i], memctx );
 821                         }
 822                         BER_BVZERO( &n->f_sub_any[i] );
 823                 }
 824                 if ( !BER_BVISNULL( &f->f_sub_final ))
 825                         ber_dupbv_x( &n->f_sub_final, &f->f_sub_final, memctx );
 826                 break;
 827         case LDAP_FILTER_EXT: {
 828                 /* Should this be mra_dup() ? */
 829                 ber_len_t length;
 830                 length = sizeof(MatchingRuleAssertion);
 831                 if ( !BER_BVISNULL( &f->f_mr_rule_text ))
 832                         length += f->f_mr_rule_text.bv_len + 1;
 833                 n->f_mra = mf->bmf_calloc( 1, length, memctx );
 834                 *n->f_mra = *f->f_mra;
 835                 ber_dupbv_x( &n->f_mr_value, &f->f_mr_value, memctx );
 836                 if ( !BER_BVISNULL( &f->f_mr_rule_text )) {
 837                         n->f_mr_rule_text.bv_val = (char *)(n->f_mra+1);
 838                         AC_MEMCPY(n->f_mr_rule_text.bv_val,
 839                                 f->f_mr_rule_text.bv_val, f->f_mr_rule_text.bv_len );
 840                 }
 841                 } break;
 842         case LDAP_FILTER_AND:
 843         case LDAP_FILTER_OR:
 844         case LDAP_FILTER_NOT: {
 845                 Filter **p;
 846                 for ( p = &n->f_list, f = f->f_list; f; f = f->f_next ) {
 847                         *p = filter_dup( f, memctx );
 848                         p = &(*p)->f_next;
 849                 }
 850                 } break;
 851         }
 852         return n;
 853 }
 854
 855 static int
 856 get_simple_vrFilter(
 857         Operation *op,
 858         BerElement *ber,
 859         ValuesReturnFilter **filt,
 860         const char **text )
 861 {
 862         ber_tag_t       tag;
 863         ber_len_t       len;
 864         int             err;
 865         ValuesReturnFilter vrf;
 866
 867         Debug( LDAP_DEBUG_FILTER, "begin get_simple_vrFilter\n", 0, 0, 0 );
 868
 869         tag = ber_peek_tag( ber, &len );
 870
 871         if( tag == LBER_ERROR ) {
 872                 *text = "error decoding filter";
 873                 return SLAPD_DISCONNECT;
 874         }
 875
 876         vrf.vrf_next = NULL;
 877
 878         err = LDAP_SUCCESS;
 879         vrf.vrf_choice = tag;
 880
 881         switch ( vrf.vrf_choice ) {
 882         case LDAP_FILTER_EQUALITY:
 883                 Debug( LDAP_DEBUG_FILTER, "EQUALITY\n", 0, 0, 0 );
 884                 err = get_ava( op, ber, &vrf.vrf_ava, SLAP_MR_EQUALITY, text );
 885                 if ( err != LDAP_SUCCESS ) {
 886                         break;
 887                 }
 888
 889                 assert( vrf.vrf_ava != NULL );
 890                 break;
 891
 892         case LDAP_FILTER_SUBSTRINGS:
 893                 Debug( LDAP_DEBUG_FILTER, "SUBSTRINGS\n", 0, 0, 0 );
 894                 err = get_ssa( op, ber, &vrf.vrf_sub, text );
 895                 break;
 896
 897         case LDAP_FILTER_GE:
 898                 Debug( LDAP_DEBUG_FILTER, "GE\n", 0, 0, 0 );
 899                 err = get_ava( op, ber, &vrf.vrf_ava, SLAP_MR_ORDERING, text );
 900                 if ( err != LDAP_SUCCESS ) {
 901                         break;
 902                 }
 903                 break;
 904
 905         case LDAP_FILTER_LE:
 906                 Debug( LDAP_DEBUG_FILTER, "LE\n", 0, 0, 0 );
 907                 err = get_ava( op, ber, &vrf.vrf_ava, SLAP_MR_ORDERING, text );
 908                 if ( err != LDAP_SUCCESS ) {
 909                         break;
 910                 }
 911                 break;
 912
 913         case LDAP_FILTER_PRESENT: {
 914                 struct berval type;
 915
 916                 Debug( LDAP_DEBUG_FILTER, "PRESENT\n", 0, 0, 0 );
 917                 if ( ber_scanf( ber, "m", &type ) == LBER_ERROR ) {
 918                         err = SLAPD_DISCONNECT;
 919                         *text = "error decoding filter";
 920                         break;
 921                 }
 922
 923                 vrf.vrf_desc = NULL;
 924                 err = slap_bv2ad( &type, &vrf.vrf_desc, text );
 925
 926                 if( err != LDAP_SUCCESS ) {
 927                         err = slap_bv2undef_ad( &type, &vrf.vrf_desc, text,
 928                                 SLAP_AD_PROXIED|SLAP_AD_NOINSERT );
 929
 930                         if( err != LDAP_SUCCESS ) {
 931                                 /* unrecognized attribute description or other error */
 932                                 Debug( LDAP_DEBUG_ANY,
 933                                         "get_simple_vrFilter: conn %lu unknown "
 934                                         "attribute type=%s (%d)\n",
 935                                         op->o_connid, type.bv_val, err );
 936
 937                                 vrf.vrf_choice = SLAPD_FILTER_COMPUTED;
 938                                 vrf.vrf_result = LDAP_COMPARE_FALSE;
 939                                 err = LDAP_SUCCESS;
 940                                 break;
 941                         }
 942                 }
 943                 } break;
 944
 945         case LDAP_FILTER_APPROX:
 946                 Debug( LDAP_DEBUG_FILTER, "APPROX\n", 0, 0, 0 );
 947                 err = get_ava( op, ber, &vrf.vrf_ava, SLAP_MR_EQUALITY_APPROX, text );
 948                 if ( err != LDAP_SUCCESS ) {
 949                         break;
 950                 }
 951                 break;
 952
 953         case LDAP_FILTER_EXT:
 954                 Debug( LDAP_DEBUG_FILTER, "EXTENSIBLE\n", 0, 0, 0 );
 955
 956                 err = get_mra( op, ber, &vrf.vrf_mra, text );
 957                 if ( err != LDAP_SUCCESS ) {
 958                         break;
 959                 }
 960
 961                 assert( vrf.vrf_mra != NULL );
 962                 break;
 963
 964         default:
 965                 (void) ber_scanf( ber, "x" ); /* skip the element */
 966                 Debug( LDAP_DEBUG_ANY, "get_simple_vrFilter: unknown filter type=%lu\n",
 967                         vrf.vrf_choice, 0, 0 );
 968                 vrf.vrf_choice = SLAPD_FILTER_COMPUTED;
 969                 vrf.vrf_result = SLAPD_COMPARE_UNDEFINED;
 970                 break;
 971         }
 972
 973         if ( err != LDAP_SUCCESS && err != SLAPD_DISCONNECT ) {
 974                 /* ignore error */
 975                 vrf.vrf_choice = SLAPD_FILTER_COMPUTED;
 976                 vrf.vrf_result = SLAPD_COMPARE_UNDEFINED;
 977                 err = LDAP_SUCCESS;
 978         }
 979
 980         if ( err == LDAP_SUCCESS ) {
 981                 *filt = ch_malloc( sizeof vrf );
 982                 **filt = vrf;
 983         }
 984
 985         Debug( LDAP_DEBUG_FILTER, "end get_simple_vrFilter %d\n", err, 0, 0 );
 986
 987         return err;
 988 }
 989
 990 int
 991 get_vrFilter( Operation *op, BerElement *ber,
 992         ValuesReturnFilter **vrf,
 993         const char **text )
 994 {
 995         /*
 996          * A ValuesReturnFilter looks like this:
 997          *
 998          *      ValuesReturnFilter ::= SEQUENCE OF SimpleFilterItem
 999          *      SimpleFilterItem ::= CHOICE {
1000          *              equalityMatch   [3]     AttributeValueAssertion,
1001          *              substrings      [4]     SubstringFilter,
1002          *              greaterOrEqual  [5]     AttributeValueAssertion,
1003          *              lessOrEqual     [6]     AttributeValueAssertion,
1004          *              present         [7]     AttributeType,
1005          *              approxMatch     [8]     AttributeValueAssertion,
1006          *              extensibleMatch [9]     SimpleMatchingAssertion -- LDAPv3
1007          *      }
1008          *
1009          *      SubstringFilter ::= SEQUENCE {
1010          *              type               AttributeType,
1011          *              SEQUENCE OF CHOICE {
1012          *                      initial          [0] IA5String,
1013          *                      any              [1] IA5String,
1014          *                      final            [2] IA5String
1015          *              }
1016          *      }
1017          *
1018          *      SimpleMatchingAssertion ::= SEQUENCE {  -- LDAPv3
1019          *              matchingRule    [1] MatchingRuleId OPTIONAL,
1020          *              type            [2] AttributeDescription OPTIONAL,
1021          *              matchValue      [3] AssertionValue }
1022          */
1023
1024         ValuesReturnFilter **n;
1025         ber_tag_t       tag;
1026         ber_len_t       len;
1027         char            *last;
1028
1029         Debug( LDAP_DEBUG_FILTER, "begin get_vrFilter\n", 0, 0, 0 );
1030
1031         tag = ber_peek_tag( ber, &len );
1032
1033         if( tag == LBER_ERROR ) {
1034                 *text = "error decoding vrFilter";
1035                 return SLAPD_DISCONNECT;
1036         }
1037
1038         if( tag != LBER_SEQUENCE ) {
1039                 *text = "error decoding vrFilter, expect SEQUENCE tag";
1040                 return SLAPD_DISCONNECT;
1041         }
1042
1043         n = vrf;
1044         for ( tag = ber_first_element( ber, &len, &last );
1045                 tag != LBER_DEFAULT;
1046                 tag = ber_next_element( ber, &len, last ) )
1047         {
1048                 int err = get_simple_vrFilter( op, ber, n, text );
1049
1050                 if ( err != LDAP_SUCCESS ) return( err );
1051
1052                 n = &(*n)->vrf_next;
1053         }
1054         *n = NULL;
1055
1056         Debug( LDAP_DEBUG_FILTER, "end get_vrFilter\n", 0, 0, 0 );
1057         return( LDAP_SUCCESS );
1058 }
1059
1060 void
1061 vrFilter_free( Operation *op, ValuesReturnFilter *vrf )
1062 {
1063         ValuesReturnFilter      *p, *next;
1064
1065         if ( vrf == NULL ) {
1066                 return;
1067         }
1068
1069         for ( p = vrf; p != NULL; p = next ) {
1070                 next = p->vrf_next;
1071
1072                 switch ( vrf->vrf_choice ) {
1073                 case LDAP_FILTER_PRESENT:
1074                         break;
1075
1076                 case LDAP_FILTER_EQUALITY:
1077                 case LDAP_FILTER_GE:
1078                 case LDAP_FILTER_LE:
1079                 case LDAP_FILTER_APPROX:
1080                         ava_free( op, vrf->vrf_ava, 1 );
1081                         break;
1082
1083                 case LDAP_FILTER_SUBSTRINGS:
1084                         if ( vrf->vrf_sub_initial.bv_val != NULL ) {
1085                                 op->o_tmpfree( vrf->vrf_sub_initial.bv_val, op->o_tmpmemctx );
1086                         }
1087                         ber_bvarray_free_x( vrf->vrf_sub_any, op->o_tmpmemctx );
1088                         if ( vrf->vrf_sub_final.bv_val != NULL ) {
1089                                 op->o_tmpfree( vrf->vrf_sub_final.bv_val, op->o_tmpmemctx );
1090                         }
1091                         op->o_tmpfree( vrf->vrf_sub, op->o_tmpmemctx );
1092                         break;
1093
1094                 case LDAP_FILTER_EXT:
1095                         mra_free( op, vrf->vrf_mra, 1 );
1096                         break;
1097
1098                 case SLAPD_FILTER_COMPUTED:
1099                         break;
1100
1101                 default:
1102                         Debug( LDAP_DEBUG_ANY, "filter_free: unknown filter type=%lu\n",
1103                                 vrf->vrf_choice, 0, 0 );
1104                         break;
1105                 }
1106
1107                 op->o_tmpfree( vrf, op->o_tmpmemctx );
1108         }
1109 }
1110
1111 void
1112 vrFilter2bv( Operation *op, ValuesReturnFilter *vrf, struct berval *fstr )
1113 {
1114         ValuesReturnFilter      *p;
1115         struct berval tmp;
1116         ber_len_t len;
1117
1118         if ( vrf == NULL ) {
1119                 ber_str2bv_x( "No filter!", sizeof("No filter!")-1,
1120                         1, fstr, op->o_tmpmemctx );
1121                 return;
1122         }
1123
1124         fstr->bv_len = sizeof("()") - 1;
1125         fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 128, op->o_tmpmemctx );
1126
1127         snprintf( fstr->bv_val, fstr->bv_len + 1, "()");
1128
1129         for ( p = vrf; p != NULL; p = p->vrf_next ) {
1130                 len = fstr->bv_len;
1131
1132                 simple_vrFilter2bv( op, p, &tmp );
1133
1134                 fstr->bv_len += tmp.bv_len;
1135                 fstr->bv_val = op->o_tmprealloc( fstr->bv_val, fstr->bv_len + 1,
1136                         op->o_tmpmemctx );
1137
1138                 snprintf( &fstr->bv_val[len-1], tmp.bv_len + 2,
1139                         /*"("*/ "%s)", tmp.bv_val );
1140
1141                 op->o_tmpfree( tmp.bv_val, op->o_tmpmemctx );
1142         }
1143 }
1144
1145 static void
1146 simple_vrFilter2bv( Operation *op, ValuesReturnFilter *vrf, struct berval *fstr )
1147 {
1148         struct berval tmp;
1149         ber_len_t len;
1150
1151         if ( vrf == NULL ) {
1152                 ber_str2bv_x( "No filter!", sizeof("No filter!")-1, 1, fstr,
1153                         op->o_tmpmemctx );
1154                 return;
1155         }
1156
1157         switch ( vrf->vrf_choice ) {
1158         case LDAP_FILTER_EQUALITY:
1159                 filter_escape_value_x( &vrf->vrf_av_value, &tmp, op->o_tmpmemctx );
1160
1161                 fstr->bv_len = vrf->vrf_av_desc->ad_cname.bv_len +
1162                         tmp.bv_len + ( sizeof("(=)") - 1 );
1163                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
1164
1165                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=%s)",
1166                         vrf->vrf_av_desc->ad_cname.bv_val,
1167                         tmp.bv_val );
1168
1169                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1170                 break;
1171
1172         case LDAP_FILTER_GE:
1173                 filter_escape_value_x( &vrf->vrf_av_value, &tmp, op->o_tmpmemctx );
1174
1175                 fstr->bv_len = vrf->vrf_av_desc->ad_cname.bv_len +
1176                         tmp.bv_len + ( sizeof("(>=)") - 1 );
1177                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
1178
1179                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s>=%s)",
1180                         vrf->vrf_av_desc->ad_cname.bv_val,
1181                         tmp.bv_val );
1182
1183                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1184                 break;
1185
1186         case LDAP_FILTER_LE:
1187                 filter_escape_value_x( &vrf->vrf_av_value, &tmp, op->o_tmpmemctx );
1188
1189                 fstr->bv_len = vrf->vrf_av_desc->ad_cname.bv_len +
1190                         tmp.bv_len + ( sizeof("(<=)") - 1 );
1191                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
1192
1193                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s<=%s)",
1194                         vrf->vrf_av_desc->ad_cname.bv_val,
1195                         tmp.bv_val );
1196
1197                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1198                 break;
1199
1200         case LDAP_FILTER_APPROX:
1201                 filter_escape_value_x( &vrf->vrf_av_value, &tmp, op->o_tmpmemctx );
1202
1203                 fstr->bv_len = vrf->vrf_av_desc->ad_cname.bv_len +
1204                         tmp.bv_len + ( sizeof("(~=)") - 1 );
1205                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
1206
1207                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s~=%s)",
1208                         vrf->vrf_av_desc->ad_cname.bv_val,
1209                         tmp.bv_val );
1210                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1211                 break;
1212
1213         case LDAP_FILTER_SUBSTRINGS:
1214                 fstr->bv_len = vrf->vrf_sub_desc->ad_cname.bv_len +
1215                         ( sizeof("(=*)") - 1 );
1216                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 128, op->o_tmpmemctx );
1217
1218                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
1219                         vrf->vrf_sub_desc->ad_cname.bv_val );
1220
1221                 if ( vrf->vrf_sub_initial.bv_val != NULL ) {
1222                         len = fstr->bv_len;
1223
1224                         filter_escape_value_x( &vrf->vrf_sub_initial, &tmp, op->o_tmpmemctx );
1225
1226                         fstr->bv_len += tmp.bv_len;
1227                         fstr->bv_val = op->o_tmprealloc( fstr->bv_val, fstr->bv_len + 1,
1228                                 op->o_tmpmemctx );
1229
1230                         snprintf( &fstr->bv_val[len-2], tmp.bv_len+3,
1231                                 /* "(attr=" */ "%s*)",
1232                                 tmp.bv_val );
1233
1234                         ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1235                 }
1236
1237                 if ( vrf->vrf_sub_any != NULL ) {
1238                         int i;
1239                         for ( i = 0; vrf->vrf_sub_any[i].bv_val != NULL; i++ ) {
1240                                 len = fstr->bv_len;
1241                                 filter_escape_value_x( &vrf->vrf_sub_any[i], &tmp,
1242                                         op->o_tmpmemctx );
1243
1244                                 fstr->bv_len += tmp.bv_len + 1;
1245                                 fstr->bv_val = op->o_tmprealloc( fstr->bv_val,
1246                                         fstr->bv_len + 1, op->o_tmpmemctx );
1247
1248                                 snprintf( &fstr->bv_val[len-1], tmp.bv_len+3,
1249                                         /* "(attr=[init]*[any*]" */ "%s*)",
1250                                         tmp.bv_val );
1251                                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1252                         }
1253                 }
1254
1255                 if ( vrf->vrf_sub_final.bv_val != NULL ) {
1256                         len = fstr->bv_len;
1257
1258                         filter_escape_value_x( &vrf->vrf_sub_final, &tmp, op->o_tmpmemctx );
1259
1260                         fstr->bv_len += tmp.bv_len;
1261                         fstr->bv_val = op->o_tmprealloc( fstr->bv_val, fstr->bv_len + 1,
1262                                 op->o_tmpmemctx );
1263
1264                         snprintf( &fstr->bv_val[len-1], tmp.bv_len+3,
1265                                 /* "(attr=[init*][any*]" */ "%s)",
1266                                 tmp.bv_val );
1267
1268                         ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1269                 }
1270
1271                 break;
1272
1273         case LDAP_FILTER_PRESENT:
1274                 fstr->bv_len = vrf->vrf_desc->ad_cname.bv_len +
1275                         ( sizeof("(=*)") - 1 );
1276                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
1277
1278                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
1279                         vrf->vrf_desc->ad_cname.bv_val );
1280                 break;
1281
1282         case LDAP_FILTER_EXT: {
1283                 struct berval ad;
1284                 filter_escape_value_x( &vrf->vrf_mr_value, &tmp, op->o_tmpmemctx );
1285
1286                 if ( vrf->vrf_mr_desc ) {
1287                         ad = vrf->vrf_mr_desc->ad_cname;
1288                 } else {
1289                         ad.bv_len = 0;
1290                         ad.bv_val = "";
1291                 }
1292
1293                 fstr->bv_len = ad.bv_len +
1294                         ( vrf->vrf_mr_dnattrs ? sizeof(":dn")-1 : 0 ) +
1295                         ( vrf->vrf_mr_rule_text.bv_len
1296                                 ? vrf->vrf_mr_rule_text.bv_len+1 : 0 ) +
1297                         tmp.bv_len + ( sizeof("(:=)") - 1 );
1298                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
1299
1300                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s%s%s:=%s)",
1301                         ad.bv_val,
1302                         vrf->vrf_mr_dnattrs ? ":dn" : "",
1303                         vrf->vrf_mr_rule_text.bv_len ? ":" : "",
1304                         vrf->vrf_mr_rule_text.bv_len ? vrf->vrf_mr_rule_text.bv_val : "",
1305                         tmp.bv_val );
1306
1307                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1308                 } break;
1309
1310         case SLAPD_FILTER_COMPUTED:
1311                 ber_str2bv_x(
1312                         vrf->vrf_result == LDAP_COMPARE_FALSE ? "(?=false)" :
1313                         vrf->vrf_result == LDAP_COMPARE_TRUE ? "(?=true)" :
1314                         vrf->vrf_result == SLAPD_COMPARE_UNDEFINED
1315                                 ? "(?=undefined)" : "(?=error)",
1316                         vrf->vrf_result == LDAP_COMPARE_FALSE ? sizeof("(?=false)")-1 :
1317                         vrf->vrf_result == LDAP_COMPARE_TRUE ? sizeof("(?=true)")-1 :
1318                         vrf->vrf_result == SLAPD_COMPARE_UNDEFINED
1319                                 ? sizeof("(?=undefined)")-1 : sizeof("(?=error)")-1,
1320                         1, fstr, op->o_tmpmemctx );
1321                 break;
1322
1323         default:
1324                 ber_str2bv_x( "(?=unknown)", sizeof("(?=unknown)")-1,
1325                         1, fstr, op->o_tmpmemctx );
1326                 break;
1327         }
1328 }