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

   1 /* filter.c - routines for parsing and dealing with filters */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2008 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  17  * All rights reserved.
  18  *
  19  * Redistribution and use in source and binary forms are permitted
  20  * provided that this notice is preserved and that due credit is given
  21  * to the University of Michigan at Ann Arbor. The name of the University
  22  * may not be used to endorse or promote products derived from this
  23  * software without specific prior written permission. This software
  24  * is provided ``as is'' without express or implied warranty.
  25  */
  26
  27 #include "portable.h"
  28
  29 #include <stdio.h>
  30
  31 #include <ac/socket.h>
  32 #include <ac/string.h>
  33
  34 #include "slap.h"
  35 #include "lutil.h"
  36
  37 const Filter *slap_filter_objectClass_pres;
  38 const struct berval *slap_filterstr_objectClass_pres;
  39
  40 static int      get_filter_list(
  41         Operation *op,
  42         BerElement *ber,
  43         Filter **f,
  44         const char **text );
  45
  46 static int      get_ssa(
  47         Operation *op,
  48         BerElement *ber,
  49         Filter *f,
  50         const char **text );
  51
  52 static void simple_vrFilter2bv(
  53         Operation *op,
  54         ValuesReturnFilter *f,
  55         struct berval *fstr );
  56
  57 static int      get_simple_vrFilter(
  58         Operation *op,
  59         BerElement *ber,
  60         ValuesReturnFilter **f,
  61         const char **text );
  62
  63 int
  64 filter_init( void )
  65 {
  66         static Filter filter_objectClass_pres = { LDAP_FILTER_PRESENT };
  67         static struct berval filterstr_objectClass_pres = BER_BVC("(objectClass=*)");
  68
  69         filter_objectClass_pres.f_desc = slap_schema.si_ad_objectClass;
  70
  71         slap_filter_objectClass_pres = &filter_objectClass_pres;
  72         slap_filterstr_objectClass_pres = &filterstr_objectClass_pres;
  73
  74         return 0;
  75 }
  76
  77 void
  78 filter_destroy( void )
  79 {
  80         return;
  81 }
  82
  83 int
  84 get_filter(
  85         Operation *op,
  86         BerElement *ber,
  87         Filter **filt,
  88         const char **text )
  89 {
  90         ber_tag_t       tag;
  91         ber_len_t       len;
  92         int             err;
  93         Filter          f;
  94
  95         Debug( LDAP_DEBUG_FILTER, "begin get_filter\n", 0, 0, 0 );
  96         /*
  97          * A filter looks like this coming in:
  98          *      Filter ::= CHOICE {
  99          *              and             [0]     SET OF Filter,
 100          *              or              [1]     SET OF Filter,
 101          *              not             [2]     Filter,
 102          *              equalityMatch   [3]     AttributeValueAssertion,
 103          *              substrings      [4]     SubstringFilter,
 104          *              greaterOrEqual  [5]     AttributeValueAssertion,
 105          *              lessOrEqual     [6]     AttributeValueAssertion,
 106          *              present         [7]     AttributeType,
 107          *              approxMatch     [8]     AttributeValueAssertion,
 108          *              extensibleMatch [9]     MatchingRuleAssertion
 109          *      }
 110          *
 111          *      SubstringFilter ::= SEQUENCE {
 112          *              type               AttributeType,
 113          *              SEQUENCE OF CHOICE {
 114          *                      initial          [0] IA5String,
 115          *                      any              [1] IA5String,
 116          *                      final            [2] IA5String
 117          *              }
 118          *      }
 119          *
 120          *      MatchingRuleAssertion ::= SEQUENCE {
 121          *              matchingRule    [1] MatchingRuleId OPTIONAL,
 122          *              type            [2] AttributeDescription OPTIONAL,
 123          *              matchValue      [3] AssertionValue,
 124          *              dnAttributes    [4] BOOLEAN DEFAULT FALSE
 125          *      }
 126          *
 127          */
 128
 129         tag = ber_peek_tag( ber, &len );
 130
 131         if( tag == LBER_ERROR ) {
 132                 *text = "error decoding filter";
 133                 return SLAPD_DISCONNECT;
 134         }
 135
 136         err = LDAP_SUCCESS;
 137
 138         f.f_next = NULL;
 139         f.f_choice = tag;
 140
 141         switch ( f.f_choice ) {
 142         case LDAP_FILTER_EQUALITY:
 143                 Debug( LDAP_DEBUG_FILTER, "EQUALITY\n", 0, 0, 0 );
 144                 err = get_ava( op, ber, &f, SLAP_MR_EQUALITY, text );
 145                 if ( err != LDAP_SUCCESS ) {
 146                         break;
 147                 }
 148
 149                 assert( f.f_ava != NULL );
 150                 break;
 151
 152         case LDAP_FILTER_SUBSTRINGS:
 153                 Debug( LDAP_DEBUG_FILTER, "SUBSTRINGS\n", 0, 0, 0 );
 154                 err = get_ssa( op, ber, &f, text );
 155                 if( err != LDAP_SUCCESS ) {
 156                         break;
 157                 }
 158                 assert( f.f_sub != NULL );
 159                 break;
 160
 161         case LDAP_FILTER_GE:
 162                 Debug( LDAP_DEBUG_FILTER, "GE\n", 0, 0, 0 );
 163                 err = get_ava( op, ber, &f, SLAP_MR_ORDERING, text );
 164                 if ( err != LDAP_SUCCESS ) {
 165                         break;
 166                 }
 167                 assert( f.f_ava != NULL );
 168                 break;
 169
 170         case LDAP_FILTER_LE:
 171                 Debug( LDAP_DEBUG_FILTER, "LE\n", 0, 0, 0 );
 172                 err = get_ava( op, ber, &f, SLAP_MR_ORDERING, text );
 173                 if ( err != LDAP_SUCCESS ) {
 174                         break;
 175                 }
 176                 assert( f.f_ava != NULL );
 177                 break;
 178
 179         case LDAP_FILTER_PRESENT: {
 180                 struct berval type;
 181
 182                 Debug( LDAP_DEBUG_FILTER, "PRESENT\n", 0, 0, 0 );
 183                 if ( ber_scanf( ber, "m", &type ) == LBER_ERROR ) {
 184                         err = SLAPD_DISCONNECT;
 185                         *text = "error decoding filter";
 186                         break;
 187                 }
 188
 189                 f.f_desc = NULL;
 190                 err = slap_bv2ad( &type, &f.f_desc, text );
 191
 192                 if( err != LDAP_SUCCESS ) {
 193                         f.f_choice |= SLAPD_FILTER_UNDEFINED;
 194                         err = slap_bv2undef_ad( &type, &f.f_desc, text,
 195                                 SLAP_AD_PROXIED|SLAP_AD_NOINSERT );
 196
 197                         if ( err != LDAP_SUCCESS ) {
 198                                 /* unrecognized attribute description or other error */
 199                                 Debug( LDAP_DEBUG_ANY,
 200                                         "get_filter: conn %lu unknown attribute "
 201                                         "type=%s (%d)\n",
 202                                         op->o_connid, type.bv_val, err );
 203
 204                                 err = LDAP_SUCCESS;
 205                                 f.f_desc = slap_bv2tmp_ad( &type, op->o_tmpmemctx );
 206                         }
 207                         *text = NULL;
 208                 }
 209
 210                 assert( f.f_desc != NULL );
 211                 } break;
 212
 213         case LDAP_FILTER_APPROX:
 214                 Debug( LDAP_DEBUG_FILTER, "APPROX\n", 0, 0, 0 );
 215                 err = get_ava( op, ber, &f, SLAP_MR_EQUALITY_APPROX, text );
 216                 if ( err != LDAP_SUCCESS ) {
 217                         break;
 218                 }
 219                 assert( f.f_ava != NULL );
 220                 break;
 221
 222         case LDAP_FILTER_AND:
 223                 Debug( LDAP_DEBUG_FILTER, "AND\n", 0, 0, 0 );
 224                 err = get_filter_list( op, ber, &f.f_and, text );
 225                 if ( err != LDAP_SUCCESS ) {
 226                         break;
 227                 }
 228                 if ( f.f_and == NULL ) {
 229                         f.f_choice = SLAPD_FILTER_COMPUTED;
 230                         f.f_result = LDAP_COMPARE_TRUE;
 231                 }
 232                 /* no assert - list could be empty */
 233                 break;
 234
 235         case LDAP_FILTER_OR:
 236                 Debug( LDAP_DEBUG_FILTER, "OR\n", 0, 0, 0 );
 237                 err = get_filter_list( op, ber, &f.f_or, text );
 238                 if ( err != LDAP_SUCCESS ) {
 239                         break;
 240                 }
 241                 if ( f.f_or == NULL ) {
 242                         f.f_choice = SLAPD_FILTER_COMPUTED;
 243                         f.f_result = LDAP_COMPARE_FALSE;
 244                 }
 245                 /* no assert - list could be empty */
 246                 break;
 247
 248         case LDAP_FILTER_NOT:
 249                 Debug( LDAP_DEBUG_FILTER, "NOT\n", 0, 0, 0 );
 250                 (void) ber_skip_tag( ber, &len );
 251                 err = get_filter( op, ber, &f.f_not, text );
 252                 if ( err != LDAP_SUCCESS ) {
 253                         break;
 254                 }
 255
 256                 assert( f.f_not != NULL );
 257                 if ( f.f_not->f_choice == SLAPD_FILTER_COMPUTED ) {
 258                         int fresult = f.f_not->f_result;
 259                         f.f_choice = SLAPD_FILTER_COMPUTED;
 260                         op->o_tmpfree( f.f_not, op->o_tmpmemctx );
 261                         f.f_not = NULL;
 262
 263                         switch( fresult ) {
 264                         case LDAP_COMPARE_TRUE:
 265                                 f.f_result = LDAP_COMPARE_FALSE;
 266                                 break;
 267                         case LDAP_COMPARE_FALSE:
 268                                 f.f_result = LDAP_COMPARE_TRUE;
 269                                 break;
 270                         default: ;
 271                                 /* (!Undefined) is Undefined */
 272                         }
 273                 }
 274                 break;
 275
 276         case LDAP_FILTER_EXT:
 277                 Debug( LDAP_DEBUG_FILTER, "EXTENSIBLE\n", 0, 0, 0 );
 278
 279                 err = get_mra( op, ber, &f, text );
 280                 if ( err != LDAP_SUCCESS ) {
 281                         break;
 282                 }
 283
 284                 assert( f.f_mra != NULL );
 285                 break;
 286
 287         default:
 288                 (void) ber_scanf( ber, "x" ); /* skip the element */
 289                 Debug( LDAP_DEBUG_ANY, "get_filter: unknown filter type=%lu\n",
 290                         f.f_choice, 0, 0 );
 291                 f.f_choice = SLAPD_FILTER_COMPUTED;
 292                 f.f_result = SLAPD_COMPARE_UNDEFINED;
 293                 break;
 294         }
 295
 296         if( err != LDAP_SUCCESS && err != SLAPD_DISCONNECT ) {
 297                 /* ignore error */
 298                 *text = NULL;
 299                 f.f_choice = SLAPD_FILTER_COMPUTED;
 300                 f.f_result = SLAPD_COMPARE_UNDEFINED;
 301                 err = LDAP_SUCCESS;
 302         }
 303
 304         if ( err == LDAP_SUCCESS ) {
 305                 *filt = op->o_tmpalloc( sizeof(f), op->o_tmpmemctx );
 306                 **filt = f;
 307         }
 308
 309         Debug( LDAP_DEBUG_FILTER, "end get_filter %d\n", err, 0, 0 );
 310
 311         return( err );
 312 }
 313
 314 static int
 315 get_filter_list( Operation *op, BerElement *ber,
 316         Filter **f,
 317         const char **text )
 318 {
 319         Filter          **new;
 320         int             err;
 321         ber_tag_t       tag;
 322         ber_len_t       len;
 323         char            *last;
 324
 325         Debug( LDAP_DEBUG_FILTER, "begin get_filter_list\n", 0, 0, 0 );
 326         new = f;
 327         for ( tag = ber_first_element( ber, &len, &last );
 328                 tag != LBER_DEFAULT;
 329                 tag = ber_next_element( ber, &len, last ) )
 330         {
 331                 err = get_filter( op, ber, new, text );
 332                 if ( err != LDAP_SUCCESS )
 333                         return( err );
 334                 new = &(*new)->f_next;
 335         }
 336         *new = NULL;
 337
 338         Debug( LDAP_DEBUG_FILTER, "end get_filter_list\n", 0, 0, 0 );
 339         return( LDAP_SUCCESS );
 340 }
 341
 342 static int
 343 get_ssa(
 344         Operation *op,
 345         BerElement      *ber,
 346         Filter          *f,
 347         const char      **text )
 348 {
 349         ber_tag_t       tag;
 350         ber_len_t       len;
 351         ber_tag_t       rc;
 352         struct berval desc, value, nvalue;
 353         char            *last;
 354         SubstringsAssertion ssa;
 355
 356         *text = "error decoding filter";
 357
 358         Debug( LDAP_DEBUG_FILTER, "begin get_ssa\n", 0, 0, 0 );
 359         if ( ber_scanf( ber, "{m" /*}*/, &desc ) == LBER_ERROR ) {
 360                 return SLAPD_DISCONNECT;
 361         }
 362
 363         *text = NULL;
 364
 365         ssa.sa_desc = NULL;
 366         ssa.sa_initial.bv_val = NULL;
 367         ssa.sa_any = NULL;
 368         ssa.sa_final.bv_val = NULL;
 369
 370         rc = slap_bv2ad( &desc, &ssa.sa_desc, text );
 371
 372         if( rc != LDAP_SUCCESS ) {
 373                 f->f_choice |= SLAPD_FILTER_UNDEFINED;
 374                 rc = slap_bv2undef_ad( &desc, &ssa.sa_desc, text,
 375                         SLAP_AD_PROXIED|SLAP_AD_NOINSERT );
 376
 377                 if( rc != LDAP_SUCCESS ) {
 378                         Debug( LDAP_DEBUG_ANY,
 379                                 "get_ssa: conn %lu unknown attribute type=%s (%ld)\n",
 380                                 op->o_connid, desc.bv_val, (long) rc );
 381
 382                         ssa.sa_desc = slap_bv2tmp_ad( &desc, op->o_tmpmemctx );
 383                 }
 384         }
 385
 386         rc = LDAP_PROTOCOL_ERROR;
 387
 388         for ( tag = ber_first_element( ber, &len, &last );
 389                 tag != LBER_DEFAULT;
 390                 tag = ber_next_element( ber, &len, last ) )
 391         {
 392                 unsigned usage;
 393
 394                 rc = ber_scanf( ber, "m", &value );
 395                 if ( rc == LBER_ERROR ) {
 396                         rc = SLAPD_DISCONNECT;
 397                         goto return_error;
 398                 }
 399
 400                 if ( value.bv_val == NULL || value.bv_len == 0 ) {
 401                         rc = LDAP_INVALID_SYNTAX;
 402                         goto return_error;
 403                 }
 404
 405                 switch ( tag ) {
 406                 case LDAP_SUBSTRING_INITIAL:
 407                         if ( ssa.sa_initial.bv_val != NULL
 408                                 || ssa.sa_any != NULL
 409                                 || ssa.sa_final.bv_val != NULL )
 410                         {
 411                                 rc = LDAP_PROTOCOL_ERROR;
 412                                 goto return_error;
 413                         }
 414                         usage = SLAP_MR_SUBSTR_INITIAL;
 415                         break;
 416
 417                 case LDAP_SUBSTRING_ANY:
 418                         if ( ssa.sa_final.bv_val != NULL ) {
 419                                 rc = LDAP_PROTOCOL_ERROR;
 420                                 goto return_error;
 421                         }
 422                         usage = SLAP_MR_SUBSTR_ANY;
 423                         break;
 424
 425                 case LDAP_SUBSTRING_FINAL:
 426                         if ( ssa.sa_final.bv_val != NULL ) {
 427                                 rc = LDAP_PROTOCOL_ERROR;
 428                                 goto return_error;
 429                         }
 430
 431                         usage = SLAP_MR_SUBSTR_FINAL;
 432                         break;
 433
 434                 default:
 435                         Debug( LDAP_DEBUG_FILTER,
 436                                 "  unknown substring choice=%ld\n",
 437                                 (long) tag, 0, 0 );
 438
 439                         rc = LDAP_PROTOCOL_ERROR;
 440                         goto return_error;
 441                 }
 442
 443                 /* validate/normalize using equality matching rule validator! */
 444                 rc = asserted_value_validate_normalize(
 445                         ssa.sa_desc, ssa.sa_desc->ad_type->sat_equality,
 446                         usage, &value, &nvalue, text, op->o_tmpmemctx );
 447                 if( rc != LDAP_SUCCESS ) goto return_error;
 448
 449                 switch ( tag ) {
 450                 case LDAP_SUBSTRING_INITIAL:
 451                         Debug( LDAP_DEBUG_FILTER, "  INITIAL\n", 0, 0, 0 );
 452                         ssa.sa_initial = nvalue;
 453                         break;
 454
 455                 case LDAP_SUBSTRING_ANY:
 456                         Debug( LDAP_DEBUG_FILTER, "  ANY\n", 0, 0, 0 );
 457                         ber_bvarray_add_x( &ssa.sa_any, &nvalue, op->o_tmpmemctx );
 458                         break;
 459
 460                 case LDAP_SUBSTRING_FINAL:
 461                         Debug( LDAP_DEBUG_FILTER, "  FINAL\n", 0, 0, 0 );
 462                         ssa.sa_final = nvalue;
 463                         break;
 464
 465                 default:
 466                         assert( 0 );
 467                         slap_sl_free( nvalue.bv_val, op->o_tmpmemctx );
 468                         rc = LDAP_PROTOCOL_ERROR;
 469
 470 return_error:
 471                         Debug( LDAP_DEBUG_FILTER, "  error=%ld\n",
 472                                 (long) rc, 0, 0 );
 473                         slap_sl_free( ssa.sa_initial.bv_val, op->o_tmpmemctx );
 474                         ber_bvarray_free_x( ssa.sa_any, op->o_tmpmemctx );
 475                         if ( ssa.sa_desc->ad_flags & SLAP_DESC_TEMPORARY )
 476                                 op->o_tmpfree( ssa.sa_desc, op->o_tmpmemctx );
 477                         slap_sl_free( ssa.sa_final.bv_val, op->o_tmpmemctx );
 478                         return rc;
 479                 }
 480
 481                 *text = NULL;
 482                 rc = LDAP_SUCCESS;
 483         }
 484
 485         if( rc == LDAP_SUCCESS ) {
 486                 f->f_sub = op->o_tmpalloc( sizeof( ssa ), op->o_tmpmemctx );
 487                 *f->f_sub = ssa;
 488         }
 489
 490         Debug( LDAP_DEBUG_FILTER, "end get_ssa\n", 0, 0, 0 );
 491         return rc /* LDAP_SUCCESS */ ;
 492 }
 493
 494 void
 495 filter_free_x( Operation *op, Filter *f, int freeme )
 496 {
 497         Filter  *p, *next;
 498
 499         if ( f == NULL ) {
 500                 return;
 501         }
 502
 503         f->f_choice &= SLAPD_FILTER_MASK;
 504
 505         switch ( f->f_choice ) {
 506         case LDAP_FILTER_PRESENT:
 507                 break;
 508
 509         case LDAP_FILTER_EQUALITY:
 510         case LDAP_FILTER_GE:
 511         case LDAP_FILTER_LE:
 512         case LDAP_FILTER_APPROX:
 513                 ava_free( op, f->f_ava, 1 );
 514                 break;
 515
 516         case LDAP_FILTER_SUBSTRINGS:
 517                 if ( f->f_sub_initial.bv_val != NULL ) {
 518                         op->o_tmpfree( f->f_sub_initial.bv_val, op->o_tmpmemctx );
 519                 }
 520                 ber_bvarray_free_x( f->f_sub_any, op->o_tmpmemctx );
 521                 if ( f->f_sub_final.bv_val != NULL ) {
 522                         op->o_tmpfree( f->f_sub_final.bv_val, op->o_tmpmemctx );
 523                 }
 524                 if ( f->f_sub->sa_desc->ad_flags & SLAP_DESC_TEMPORARY )
 525                         op->o_tmpfree( f->f_sub->sa_desc, op->o_tmpmemctx );
 526                 op->o_tmpfree( f->f_sub, op->o_tmpmemctx );
 527                 break;
 528
 529         case LDAP_FILTER_AND:
 530         case LDAP_FILTER_OR:
 531         case LDAP_FILTER_NOT:
 532                 for ( p = f->f_list; p != NULL; p = next ) {
 533                         next = p->f_next;
 534                         filter_free_x( op, p, 1 );
 535                 }
 536                 break;
 537
 538         case LDAP_FILTER_EXT:
 539                 mra_free( op, f->f_mra, 1 );
 540                 break;
 541
 542         case SLAPD_FILTER_COMPUTED:
 543                 break;
 544
 545         default:
 546                 Debug( LDAP_DEBUG_ANY, "filter_free: unknown filter type=%lu\n",
 547                         f->f_choice, 0, 0 );
 548                 break;
 549         }
 550
 551         if ( freeme ) {
 552                 op->o_tmpfree( f, op->o_tmpmemctx );
 553         }
 554 }
 555
 556 void
 557 filter_free( Filter *f )
 558 {
 559         Operation op;
 560         Opheader ohdr;
 561
 562         op.o_hdr = &ohdr;
 563         op.o_tmpmemctx = slap_sl_context( f );
 564         op.o_tmpmfuncs = &slap_sl_mfuncs;
 565         filter_free_x( &op, f, 1 );
 566 }
 567
 568 void
 569 filter2bv_x( Operation *op, Filter *f, struct berval *fstr )
 570 {
 571         int             i;
 572         Filter          *p;
 573         struct berval   tmp, value;
 574         static struct berval
 575                         ber_bvfalse = BER_BVC( "(?=false)" ),
 576                         ber_bvtrue = BER_BVC( "(?=true)" ),
 577                         ber_bvundefined = BER_BVC( "(?=undefined)" ),
 578                         ber_bverror = BER_BVC( "(?=error)" ),
 579                         ber_bvunknown = BER_BVC( "(?=unknown)" ),
 580                         ber_bvnone = BER_BVC( "(?=none)" );
 581         ber_len_t       len;
 582         ber_tag_t       choice;
 583         int undef;
 584         char *sign;
 585
 586         if ( f == NULL ) {
 587                 ber_dupbv_x( fstr, &ber_bvnone, op->o_tmpmemctx );
 588                 return;
 589         }
 590
 591         undef = f->f_choice & SLAPD_FILTER_UNDEFINED;
 592         choice = f->f_choice & SLAPD_FILTER_MASK;
 593
 594         switch ( choice ) {
 595         case LDAP_FILTER_EQUALITY:
 596                 fstr->bv_len = STRLENOF("(=)");
 597                 sign = "=";
 598                 goto simple;
 599         case LDAP_FILTER_GE:
 600                 fstr->bv_len = STRLENOF("(>=)");
 601                 sign = ">=";
 602                 goto simple;
 603         case LDAP_FILTER_LE:
 604                 fstr->bv_len = STRLENOF("(<=)");
 605                 sign = "<=";
 606                 goto simple;
 607         case LDAP_FILTER_APPROX:
 608                 fstr->bv_len = STRLENOF("(~=)");
 609                 sign = "~=";
 610
 611 simple:
 612                 value = f->f_av_value;
 613                 if ( f->f_av_desc->ad_type->sat_equality &&
 614                         !undef &&
 615                         ( f->f_av_desc->ad_type->sat_equality->smr_usage & SLAP_MR_MUTATION_NORMALIZER ))
 616                 {
 617                         f->f_av_desc->ad_type->sat_equality->smr_normalize(
 618                                 (SLAP_MR_DENORMALIZE|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX),
 619                                 NULL, NULL, &f->f_av_value, &value, op->o_tmpmemctx );
 620                 }
 621
 622                 filter_escape_value_x( &value, &tmp, op->o_tmpmemctx );
 623                 /* NOTE: tmp can legitimately be NULL (meaning empty)
 624                  * since in a Filter values in AVAs are supposed
 625                  * to have been normalized, meaning that an empty value
 626                  * is legal for that attribute's syntax */
 627
 628                 fstr->bv_len += f->f_av_desc->ad_cname.bv_len + tmp.bv_len;
 629                 if ( undef )
 630                         fstr->bv_len++;
 631                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
 632
 633                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s%s%s)",
 634                         undef ? "?" : "",
 635                         f->f_av_desc->ad_cname.bv_val, sign,
 636                         tmp.bv_len ? tmp.bv_val : "" );
 637
 638                 if ( value.bv_val != f->f_av_value.bv_val ) {
 639                         ber_memfree_x( value.bv_val, op->o_tmpmemctx );
 640                 }
 641
 642                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
 643                 break;
 644
 645         case LDAP_FILTER_SUBSTRINGS:
 646                 fstr->bv_len = f->f_sub_desc->ad_cname.bv_len +
 647                         STRLENOF("(=*)");
 648                 if ( undef )
 649                         fstr->bv_len++;
 650                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 128, op->o_tmpmemctx );
 651
 652                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s=*)",
 653                         undef ? "?" : "",
 654                         f->f_sub_desc->ad_cname.bv_val );
 655
 656                 if ( f->f_sub_initial.bv_val != NULL ) {
 657                         ber_len_t tmplen;
 658
 659                         len = fstr->bv_len;
 660
 661                         filter_escape_value_x( &f->f_sub_initial, &tmp, op->o_tmpmemctx );
 662                         tmplen = tmp.bv_len;
 663
 664                         fstr->bv_len += tmplen;
 665                         fstr->bv_val = op->o_tmprealloc( fstr->bv_val,
 666                                 fstr->bv_len + 1, op->o_tmpmemctx );
 667
 668                         snprintf( &fstr->bv_val[len - 2],
 669                                 tmplen + STRLENOF( /*(*/ "*)" ) + 1,
 670                                 /* "(attr=" */ "%s*)",
 671                                 tmp.bv_len ? tmp.bv_val : "");
 672
 673                         ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
 674                 }
 675
 676                 if ( f->f_sub_any != NULL ) {
 677                         for ( i = 0; f->f_sub_any[i].bv_val != NULL; i++ ) {
 678                                 ber_len_t tmplen;
 679
 680                                 len = fstr->bv_len;
 681                                 filter_escape_value_x( &f->f_sub_any[i],
 682                                         &tmp, op->o_tmpmemctx );
 683                                 tmplen = tmp.bv_len;
 684
 685                                 fstr->bv_len += tmplen + STRLENOF( /*(*/ ")" );
 686                                 fstr->bv_val = op->o_tmprealloc( fstr->bv_val,
 687                                         fstr->bv_len + 1, op->o_tmpmemctx );
 688
 689                                 snprintf( &fstr->bv_val[len - 1],
 690                                         tmplen + STRLENOF( /*(*/ "*)" ) + 1,
 691                                         /* "(attr=[init]*[any*]" */ "%s*)",
 692                                         tmp.bv_len ? tmp.bv_val : "");
 693                                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
 694                         }
 695                 }
 696
 697                 if ( f->f_sub_final.bv_val != NULL ) {
 698                         ber_len_t tmplen;
 699
 700                         len = fstr->bv_len;
 701
 702                         filter_escape_value_x( &f->f_sub_final, &tmp, op->o_tmpmemctx );
 703                         tmplen = tmp.bv_len;
 704
 705                         fstr->bv_len += tmplen;
 706                         fstr->bv_val = op->o_tmprealloc( fstr->bv_val,
 707                                 fstr->bv_len + 1, op->o_tmpmemctx );
 708
 709                         snprintf( &fstr->bv_val[len - 1],
 710                                 tmplen + STRLENOF( /*(*/ ")" ) + 1,
 711                                 /* "(attr=[init*][any*]" */ "%s)",
 712                                 tmp.bv_len ? tmp.bv_val : "");
 713
 714                         ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
 715                 }
 716
 717                 break;
 718
 719         case LDAP_FILTER_PRESENT:
 720                 fstr->bv_len = f->f_desc->ad_cname.bv_len +
 721                         STRLENOF("(=*)");
 722                 if ( undef )
 723                         fstr->bv_len++;
 724
 725                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
 726
 727                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s=*)",
 728                         undef ? "?" : "",
 729                         f->f_desc->ad_cname.bv_val );
 730                 break;
 731
 732         case LDAP_FILTER_AND:
 733         case LDAP_FILTER_OR:
 734         case LDAP_FILTER_NOT:
 735                 fstr->bv_len = STRLENOF("(%)");
 736                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 128, op->o_tmpmemctx );
 737
 738                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%c)",
 739                         f->f_choice == LDAP_FILTER_AND ? '&' :
 740                         f->f_choice == LDAP_FILTER_OR ? '|' : '!' );
 741
 742                 for ( p = f->f_list; p != NULL; p = p->f_next ) {
 743                         len = fstr->bv_len;
 744
 745                         filter2bv_x( op, p, &tmp );
 746
 747                         fstr->bv_len += tmp.bv_len;
 748                         fstr->bv_val = op->o_tmprealloc( fstr->bv_val, fstr->bv_len + 1,
 749                                 op->o_tmpmemctx );
 750
 751                         snprintf( &fstr->bv_val[len-1],
 752                                 tmp.bv_len + STRLENOF( /*(*/ ")" ) + 1,
 753                                 /*"("*/ "%s)", tmp.bv_val );
 754
 755                         op->o_tmpfree( tmp.bv_val, op->o_tmpmemctx );
 756                 }
 757
 758                 break;
 759
 760         case LDAP_FILTER_EXT: {
 761                 struct berval ad;
 762
 763                 filter_escape_value_x( &f->f_mr_value, &tmp, op->o_tmpmemctx );
 764                 /* NOTE: tmp can legitimately be NULL (meaning empty)
 765                  * since in a Filter values in MRAs are supposed
 766                  * to have been normalized, meaning that an empty value
 767                  * is legal for that attribute's syntax */
 768
 769                 if ( f->f_mr_desc ) {
 770                         ad = f->f_mr_desc->ad_cname;
 771                 } else {
 772                         ad.bv_len = 0;
 773                         ad.bv_val = "";
 774                 }
 775
 776                 fstr->bv_len = ad.bv_len +
 777                         ( f->f_mr_dnattrs ? STRLENOF(":dn") : 0 ) +
 778                         ( f->f_mr_rule_text.bv_len ? f->f_mr_rule_text.bv_len+1 : 0 ) +
 779                         tmp.bv_len + STRLENOF("(:=)");
 780                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
 781
 782                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s%s%s%s:=%s)",
 783                         undef ? "?" : "",
 784                         ad.bv_val,
 785                         f->f_mr_dnattrs ? ":dn" : "",
 786                         f->f_mr_rule_text.bv_len ? ":" : "",
 787                         f->f_mr_rule_text.bv_len ? f->f_mr_rule_text.bv_val : "",
 788                         tmp.bv_len ? tmp.bv_val : "" );
 789                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
 790                 } break;
 791
 792         case SLAPD_FILTER_COMPUTED:
 793                 switch ( f->f_result ) {
 794                 case LDAP_COMPARE_FALSE:
 795                         tmp = ber_bvfalse;
 796                         break;
 797
 798                 case LDAP_COMPARE_TRUE:
 799                         tmp = ber_bvtrue;
 800                         break;
 801
 802                 case SLAPD_COMPARE_UNDEFINED:
 803                         tmp = ber_bvundefined;
 804                         break;
 805
 806                 default:
 807                         tmp = ber_bverror;
 808                         break;
 809                 }
 810
 811                 ber_dupbv_x( fstr, &tmp, op->o_tmpmemctx );
 812                 break;
 813
 814         default:
 815                 ber_dupbv_x( fstr, &ber_bvunknown, op->o_tmpmemctx );
 816                 break;
 817         }
 818 }
 819
 820 void
 821 filter2bv( Filter *f, struct berval *fstr )
 822 {
 823         Operation op;
 824         Opheader ohdr;
 825
 826         op.o_hdr = &ohdr;
 827         op.o_tmpmemctx = NULL;
 828         op.o_tmpmfuncs = &ch_mfuncs;
 829
 830         filter2bv_x( &op, f, fstr );
 831 }
 832
 833 Filter *
 834 filter_dup( Filter *f, void *memctx )
 835 {
 836         BerMemoryFunctions *mf = &slap_sl_mfuncs;
 837         Filter *n;
 838
 839         if ( !f )
 840                 return NULL;
 841
 842         n = mf->bmf_malloc( sizeof(Filter), memctx );
 843         n->f_choice = f->f_choice;
 844         n->f_next = NULL;
 845
 846         switch( f->f_choice & SLAPD_FILTER_MASK ) {
 847         case SLAPD_FILTER_COMPUTED:
 848                 n->f_result = f->f_result;
 849                 break;
 850         case LDAP_FILTER_PRESENT:
 851                 if ( f->f_desc->ad_flags & SLAP_DESC_TEMPORARY )
 852                         n->f_desc = slap_bv2tmp_ad( &f->f_desc->ad_cname, memctx );
 853                 else
 854                         n->f_desc = f->f_desc;
 855                 break;
 856         case LDAP_FILTER_EQUALITY:
 857         case LDAP_FILTER_GE:
 858         case LDAP_FILTER_LE:
 859         case LDAP_FILTER_APPROX:
 860                 /* Should this be ava_dup() ? */
 861                 n->f_ava = mf->bmf_calloc( 1, sizeof(AttributeAssertion), memctx );
 862                 *n->f_ava = *f->f_ava;
 863                 if ( f->f_av_desc->ad_flags & SLAP_DESC_TEMPORARY )
 864                         n->f_av_desc = slap_bv2tmp_ad( &f->f_av_desc->ad_cname, memctx );
 865                 ber_dupbv_x( &n->f_av_value, &f->f_av_value, memctx );
 866                 break;
 867         case LDAP_FILTER_SUBSTRINGS:
 868                 n->f_sub = mf->bmf_calloc( 1, sizeof(SubstringsAssertion), memctx );
 869                 if ( f->f_sub_desc->ad_flags & SLAP_DESC_TEMPORARY )
 870                         n->f_sub_desc = slap_bv2tmp_ad( &f->f_sub_desc->ad_cname, memctx );
 871                 else
 872                         n->f_sub_desc = f->f_sub_desc;
 873                 if ( !BER_BVISNULL( &f->f_sub_initial ))
 874                         ber_dupbv_x( &n->f_sub_initial, &f->f_sub_initial, memctx );
 875                 if ( f->f_sub_any ) {
 876                         int i;
 877                         for ( i = 0; !BER_BVISNULL( &f->f_sub_any[i] ); i++ );
 878                         n->f_sub_any = mf->bmf_malloc(( i+1 )*sizeof( struct berval ),
 879                                 memctx );
 880                         for ( i = 0; !BER_BVISNULL( &f->f_sub_any[i] ); i++ ) {
 881                                 ber_dupbv_x( &n->f_sub_any[i], &f->f_sub_any[i], memctx );
 882                         }
 883                         BER_BVZERO( &n->f_sub_any[i] );
 884                 }
 885                 if ( !BER_BVISNULL( &f->f_sub_final ))
 886                         ber_dupbv_x( &n->f_sub_final, &f->f_sub_final, memctx );
 887                 break;
 888         case LDAP_FILTER_EXT: {
 889                 /* Should this be mra_dup() ? */
 890                 ber_len_t length;
 891                 length = sizeof(MatchingRuleAssertion);
 892                 if ( !BER_BVISNULL( &f->f_mr_rule_text ))
 893                         length += f->f_mr_rule_text.bv_len + 1;
 894                 n->f_mra = mf->bmf_calloc( 1, length, memctx );
 895                 *n->f_mra = *f->f_mra;
 896                 if ( f->f_mr_desc && ( f->f_sub_desc->ad_flags & SLAP_DESC_TEMPORARY ))
 897                         n->f_mr_desc = slap_bv2tmp_ad( &f->f_mr_desc->ad_cname, memctx );
 898                 ber_dupbv_x( &n->f_mr_value, &f->f_mr_value, memctx );
 899                 if ( !BER_BVISNULL( &f->f_mr_rule_text )) {
 900                         n->f_mr_rule_text.bv_val = (char *)(n->f_mra+1);
 901                         AC_MEMCPY(n->f_mr_rule_text.bv_val,
 902                                 f->f_mr_rule_text.bv_val, f->f_mr_rule_text.bv_len );
 903                 }
 904                 } break;
 905         case LDAP_FILTER_AND:
 906         case LDAP_FILTER_OR:
 907         case LDAP_FILTER_NOT: {
 908                 Filter **p;
 909                 for ( p = &n->f_list, f = f->f_list; f; f = f->f_next ) {
 910                         *p = filter_dup( f, memctx );
 911                         p = &(*p)->f_next;
 912                 }
 913                 } break;
 914         }
 915         return n;
 916 }
 917
 918 static int
 919 get_simple_vrFilter(
 920         Operation *op,
 921         BerElement *ber,
 922         ValuesReturnFilter **filt,
 923         const char **text )
 924 {
 925         ber_tag_t       tag;
 926         ber_len_t       len;
 927         int             err;
 928         ValuesReturnFilter vrf;
 929
 930         Debug( LDAP_DEBUG_FILTER, "begin get_simple_vrFilter\n", 0, 0, 0 );
 931
 932         tag = ber_peek_tag( ber, &len );
 933
 934         if( tag == LBER_ERROR ) {
 935                 *text = "error decoding filter";
 936                 return SLAPD_DISCONNECT;
 937         }
 938
 939         vrf.vrf_next = NULL;
 940
 941         err = LDAP_SUCCESS;
 942         vrf.vrf_choice = tag;
 943
 944         switch ( vrf.vrf_choice ) {
 945         case LDAP_FILTER_EQUALITY:
 946                 Debug( LDAP_DEBUG_FILTER, "EQUALITY\n", 0, 0, 0 );
 947                 err = get_ava( op, ber, (Filter *)&vrf, SLAP_MR_EQUALITY, text );
 948                 if ( err != LDAP_SUCCESS ) {
 949                         break;
 950                 }
 951
 952                 assert( vrf.vrf_ava != NULL );
 953                 break;
 954
 955         case LDAP_FILTER_SUBSTRINGS:
 956                 Debug( LDAP_DEBUG_FILTER, "SUBSTRINGS\n", 0, 0, 0 );
 957                 err = get_ssa( op, ber, (Filter *)&vrf, text );
 958                 break;
 959
 960         case LDAP_FILTER_GE:
 961                 Debug( LDAP_DEBUG_FILTER, "GE\n", 0, 0, 0 );
 962                 err = get_ava( op, ber, (Filter *)&vrf, SLAP_MR_ORDERING, text );
 963                 if ( err != LDAP_SUCCESS ) {
 964                         break;
 965                 }
 966                 break;
 967
 968         case LDAP_FILTER_LE:
 969                 Debug( LDAP_DEBUG_FILTER, "LE\n", 0, 0, 0 );
 970                 err = get_ava( op, ber, (Filter *)&vrf, SLAP_MR_ORDERING, text );
 971                 if ( err != LDAP_SUCCESS ) {
 972                         break;
 973                 }
 974                 break;
 975
 976         case LDAP_FILTER_PRESENT: {
 977                 struct berval type;
 978
 979                 Debug( LDAP_DEBUG_FILTER, "PRESENT\n", 0, 0, 0 );
 980                 if ( ber_scanf( ber, "m", &type ) == LBER_ERROR ) {
 981                         err = SLAPD_DISCONNECT;
 982                         *text = "error decoding filter";
 983                         break;
 984                 }
 985
 986                 vrf.vrf_desc = NULL;
 987                 err = slap_bv2ad( &type, &vrf.vrf_desc, text );
 988
 989                 if( err != LDAP_SUCCESS ) {
 990                         vrf.vrf_choice |= SLAPD_FILTER_UNDEFINED;
 991                         err = slap_bv2undef_ad( &type, &vrf.vrf_desc, text,
 992                                 SLAP_AD_PROXIED);
 993
 994                         if( err != LDAP_SUCCESS ) {
 995                                 /* unrecognized attribute description or other error */
 996                                 Debug( LDAP_DEBUG_ANY,
 997                                         "get_simple_vrFilter: conn %lu unknown "
 998                                         "attribute type=%s (%d)\n",
 999                                         op->o_connid, type.bv_val, err );
1000
1001                                 vrf.vrf_choice = SLAPD_FILTER_COMPUTED;
1002                                 vrf.vrf_result = LDAP_COMPARE_FALSE;
1003                                 err = LDAP_SUCCESS;
1004                                 break;
1005                         }
1006                 }
1007                 } break;
1008
1009         case LDAP_FILTER_APPROX:
1010                 Debug( LDAP_DEBUG_FILTER, "APPROX\n", 0, 0, 0 );
1011                 err = get_ava( op, ber, (Filter *)&vrf, SLAP_MR_EQUALITY_APPROX, text );
1012                 if ( err != LDAP_SUCCESS ) {
1013                         break;
1014                 }
1015                 break;
1016
1017         case LDAP_FILTER_EXT:
1018                 Debug( LDAP_DEBUG_FILTER, "EXTENSIBLE\n", 0, 0, 0 );
1019
1020                 err = get_mra( op, ber, (Filter *)&vrf, text );
1021                 if ( err != LDAP_SUCCESS ) {
1022                         break;
1023                 }
1024
1025                 assert( vrf.vrf_mra != NULL );
1026                 break;
1027
1028         default:
1029                 (void) ber_scanf( ber, "x" ); /* skip the element */
1030                 Debug( LDAP_DEBUG_ANY, "get_simple_vrFilter: unknown filter type=%lu\n",
1031                         vrf.vrf_choice, 0, 0 );
1032                 vrf.vrf_choice = SLAPD_FILTER_COMPUTED;
1033                 vrf.vrf_result = SLAPD_COMPARE_UNDEFINED;
1034                 break;
1035         }
1036
1037         if ( err != LDAP_SUCCESS && err != SLAPD_DISCONNECT ) {
1038                 /* ignore error */
1039                 vrf.vrf_choice = SLAPD_FILTER_COMPUTED;
1040                 vrf.vrf_result = SLAPD_COMPARE_UNDEFINED;
1041                 err = LDAP_SUCCESS;
1042         }
1043
1044         if ( err == LDAP_SUCCESS ) {
1045                 *filt = op->o_tmpalloc( sizeof vrf, op->o_tmpmemctx );
1046                 **filt = vrf;
1047         }
1048
1049         Debug( LDAP_DEBUG_FILTER, "end get_simple_vrFilter %d\n", err, 0, 0 );
1050
1051         return err;
1052 }
1053
1054 int
1055 get_vrFilter( Operation *op, BerElement *ber,
1056         ValuesReturnFilter **vrf,
1057         const char **text )
1058 {
1059         /*
1060          * A ValuesReturnFilter looks like this:
1061          *
1062          *      ValuesReturnFilter ::= SEQUENCE OF SimpleFilterItem
1063          *      SimpleFilterItem ::= CHOICE {
1064          *              equalityMatch   [3]     AttributeValueAssertion,
1065          *              substrings      [4]     SubstringFilter,
1066          *              greaterOrEqual  [5]     AttributeValueAssertion,
1067          *              lessOrEqual     [6]     AttributeValueAssertion,
1068          *              present         [7]     AttributeType,
1069          *              approxMatch     [8]     AttributeValueAssertion,
1070          *              extensibleMatch [9]     SimpleMatchingAssertion -- LDAPv3
1071          *      }
1072          *
1073          *      SubstringFilter ::= SEQUENCE {
1074          *              type               AttributeType,
1075          *              SEQUENCE OF CHOICE {
1076          *                      initial          [0] IA5String,
1077          *                      any              [1] IA5String,
1078          *                      final            [2] IA5String
1079          *              }
1080          *      }
1081          *
1082          *      SimpleMatchingAssertion ::= SEQUENCE {  -- LDAPv3
1083          *              matchingRule    [1] MatchingRuleId OPTIONAL,
1084          *              type            [2] AttributeDescription OPTIONAL,
1085          *              matchValue      [3] AssertionValue }
1086          */
1087
1088         ValuesReturnFilter **n;
1089         ber_tag_t       tag;
1090         ber_len_t       len;
1091         char            *last;
1092
1093         Debug( LDAP_DEBUG_FILTER, "begin get_vrFilter\n", 0, 0, 0 );
1094
1095         tag = ber_peek_tag( ber, &len );
1096
1097         if( tag == LBER_ERROR ) {
1098                 *text = "error decoding vrFilter";
1099                 return SLAPD_DISCONNECT;
1100         }
1101
1102         if( tag != LBER_SEQUENCE ) {
1103                 *text = "error decoding vrFilter, expect SEQUENCE tag";
1104                 return SLAPD_DISCONNECT;
1105         }
1106
1107         n = vrf;
1108         for ( tag = ber_first_element( ber, &len, &last );
1109                 tag != LBER_DEFAULT;
1110                 tag = ber_next_element( ber, &len, last ) )
1111         {
1112                 int err = get_simple_vrFilter( op, ber, n, text );
1113
1114                 if ( err != LDAP_SUCCESS ) return( err );
1115
1116                 n = &(*n)->vrf_next;
1117         }
1118         *n = NULL;
1119
1120         Debug( LDAP_DEBUG_FILTER, "end get_vrFilter\n", 0, 0, 0 );
1121         return( LDAP_SUCCESS );
1122 }
1123
1124 void
1125 vrFilter_free( Operation *op, ValuesReturnFilter *vrf )
1126 {
1127         ValuesReturnFilter      *p, *next;
1128
1129         if ( vrf == NULL ) {
1130                 return;
1131         }
1132
1133         for ( p = vrf; p != NULL; p = next ) {
1134                 next = p->vrf_next;
1135
1136                 switch ( vrf->vrf_choice & SLAPD_FILTER_MASK ) {
1137                 case LDAP_FILTER_PRESENT:
1138                         break;
1139
1140                 case LDAP_FILTER_EQUALITY:
1141                 case LDAP_FILTER_GE:
1142                 case LDAP_FILTER_LE:
1143                 case LDAP_FILTER_APPROX:
1144                         ava_free( op, vrf->vrf_ava, 1 );
1145                         break;
1146
1147                 case LDAP_FILTER_SUBSTRINGS:
1148                         if ( vrf->vrf_sub_initial.bv_val != NULL ) {
1149                                 op->o_tmpfree( vrf->vrf_sub_initial.bv_val, op->o_tmpmemctx );
1150                         }
1151                         ber_bvarray_free_x( vrf->vrf_sub_any, op->o_tmpmemctx );
1152                         if ( vrf->vrf_sub_final.bv_val != NULL ) {
1153                                 op->o_tmpfree( vrf->vrf_sub_final.bv_val, op->o_tmpmemctx );
1154                         }
1155                         op->o_tmpfree( vrf->vrf_sub, op->o_tmpmemctx );
1156                         break;
1157
1158                 case LDAP_FILTER_EXT:
1159                         mra_free( op, vrf->vrf_mra, 1 );
1160                         break;
1161
1162                 case SLAPD_FILTER_COMPUTED:
1163                         break;
1164
1165                 default:
1166                         Debug( LDAP_DEBUG_ANY, "filter_free: unknown filter type=%lu\n",
1167                                 vrf->vrf_choice, 0, 0 );
1168                         break;
1169                 }
1170
1171                 op->o_tmpfree( vrf, op->o_tmpmemctx );
1172         }
1173 }
1174
1175 void
1176 vrFilter2bv( Operation *op, ValuesReturnFilter *vrf, struct berval *fstr )
1177 {
1178         ValuesReturnFilter      *p;
1179         struct berval tmp;
1180         ber_len_t len;
1181
1182         if ( vrf == NULL ) {
1183                 ber_str2bv_x( "No filter!", STRLENOF("No filter!"),
1184                         1, fstr, op->o_tmpmemctx );
1185                 return;
1186         }
1187
1188         fstr->bv_len = STRLENOF("()");
1189         fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 128, op->o_tmpmemctx );
1190
1191         snprintf( fstr->bv_val, fstr->bv_len + 1, "()");
1192
1193         for ( p = vrf; p != NULL; p = p->vrf_next ) {
1194                 len = fstr->bv_len;
1195
1196                 simple_vrFilter2bv( op, p, &tmp );
1197
1198                 fstr->bv_len += tmp.bv_len;
1199                 fstr->bv_val = op->o_tmprealloc( fstr->bv_val, fstr->bv_len + 1,
1200                         op->o_tmpmemctx );
1201
1202                 snprintf( &fstr->bv_val[len-1], tmp.bv_len + 2,
1203                         /*"("*/ "%s)", tmp.bv_val );
1204
1205                 op->o_tmpfree( tmp.bv_val, op->o_tmpmemctx );
1206         }
1207 }
1208
1209 static void
1210 simple_vrFilter2bv( Operation *op, ValuesReturnFilter *vrf, struct berval *fstr )
1211 {
1212         struct berval tmp;
1213         ber_len_t len;
1214         int undef;
1215
1216         if ( vrf == NULL ) {
1217                 ber_str2bv_x( "No filter!", STRLENOF("No filter!"), 1, fstr,
1218                         op->o_tmpmemctx );
1219                 return;
1220         }
1221         undef = vrf->vrf_choice & SLAPD_FILTER_UNDEFINED;
1222
1223         switch ( vrf->vrf_choice & SLAPD_FILTER_MASK ) {
1224         case LDAP_FILTER_EQUALITY:
1225                 filter_escape_value_x( &vrf->vrf_av_value, &tmp, op->o_tmpmemctx );
1226
1227                 fstr->bv_len = vrf->vrf_av_desc->ad_cname.bv_len +
1228                         tmp.bv_len + STRLENOF("(=)");
1229                 if ( undef ) fstr->bv_len++;
1230                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
1231
1232                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=%s)",
1233                         vrf->vrf_av_desc->ad_cname.bv_val,
1234                         tmp.bv_val );
1235
1236                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1237                 break;
1238
1239         case LDAP_FILTER_GE:
1240                 filter_escape_value_x( &vrf->vrf_av_value, &tmp, op->o_tmpmemctx );
1241
1242                 fstr->bv_len = vrf->vrf_av_desc->ad_cname.bv_len +
1243                         tmp.bv_len + STRLENOF("(>=)");
1244                 if ( undef ) fstr->bv_len++;
1245                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
1246
1247                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s>=%s)",
1248                         vrf->vrf_av_desc->ad_cname.bv_val,
1249                         tmp.bv_val );
1250
1251                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1252                 break;
1253
1254         case LDAP_FILTER_LE:
1255                 filter_escape_value_x( &vrf->vrf_av_value, &tmp, op->o_tmpmemctx );
1256
1257                 fstr->bv_len = vrf->vrf_av_desc->ad_cname.bv_len +
1258                         tmp.bv_len + STRLENOF("(<=)");
1259                 if ( undef ) fstr->bv_len++;
1260                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
1261
1262                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s<=%s)",
1263                         vrf->vrf_av_desc->ad_cname.bv_val,
1264                         tmp.bv_val );
1265
1266                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1267                 break;
1268
1269         case LDAP_FILTER_APPROX:
1270                 filter_escape_value_x( &vrf->vrf_av_value, &tmp, op->o_tmpmemctx );
1271
1272                 fstr->bv_len = vrf->vrf_av_desc->ad_cname.bv_len +
1273                         tmp.bv_len + STRLENOF("(~=)");
1274                 if ( undef ) fstr->bv_len++;
1275                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
1276
1277                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s~=%s)",
1278                         vrf->vrf_av_desc->ad_cname.bv_val,
1279                         tmp.bv_val );
1280                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1281                 break;
1282
1283         case LDAP_FILTER_SUBSTRINGS:
1284                 fstr->bv_len = vrf->vrf_sub_desc->ad_cname.bv_len +
1285                         STRLENOF("(=*)");
1286                 if ( undef ) fstr->bv_len++;
1287                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 128, op->o_tmpmemctx );
1288
1289                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
1290                         vrf->vrf_sub_desc->ad_cname.bv_val );
1291
1292                 if ( vrf->vrf_sub_initial.bv_val != NULL ) {
1293                         len = fstr->bv_len;
1294
1295                         filter_escape_value_x( &vrf->vrf_sub_initial, &tmp, op->o_tmpmemctx );
1296
1297                         fstr->bv_len += tmp.bv_len;
1298                         fstr->bv_val = op->o_tmprealloc( fstr->bv_val, fstr->bv_len + 1,
1299                                 op->o_tmpmemctx );
1300
1301                         snprintf( &fstr->bv_val[len-2], tmp.bv_len+3,
1302                                 /* "(attr=" */ "%s*)",
1303                                 tmp.bv_val );
1304
1305                         ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1306                 }
1307
1308                 if ( vrf->vrf_sub_any != NULL ) {
1309                         int i;
1310                         for ( i = 0; vrf->vrf_sub_any[i].bv_val != NULL; i++ ) {
1311                                 len = fstr->bv_len;
1312                                 filter_escape_value_x( &vrf->vrf_sub_any[i], &tmp,
1313                                         op->o_tmpmemctx );
1314
1315                                 fstr->bv_len += tmp.bv_len + 1;
1316                                 fstr->bv_val = op->o_tmprealloc( fstr->bv_val,
1317                                         fstr->bv_len + 1, op->o_tmpmemctx );
1318
1319                                 snprintf( &fstr->bv_val[len-1], tmp.bv_len+3,
1320                                         /* "(attr=[init]*[any*]" */ "%s*)",
1321                                         tmp.bv_val );
1322                                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1323                         }
1324                 }
1325
1326                 if ( vrf->vrf_sub_final.bv_val != NULL ) {
1327                         len = fstr->bv_len;
1328
1329                         filter_escape_value_x( &vrf->vrf_sub_final, &tmp, op->o_tmpmemctx );
1330
1331                         fstr->bv_len += tmp.bv_len;
1332                         fstr->bv_val = op->o_tmprealloc( fstr->bv_val, fstr->bv_len + 1,
1333                                 op->o_tmpmemctx );
1334
1335                         snprintf( &fstr->bv_val[len-1], tmp.bv_len+3,
1336                                 /* "(attr=[init*][any*]" */ "%s)",
1337                                 tmp.bv_val );
1338
1339                         ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1340                 }
1341
1342                 break;
1343
1344         case LDAP_FILTER_PRESENT:
1345                 fstr->bv_len = vrf->vrf_desc->ad_cname.bv_len +
1346                         STRLENOF("(=*)");
1347                 if ( undef ) fstr->bv_len++;
1348                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
1349
1350                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
1351                         vrf->vrf_desc->ad_cname.bv_val );
1352                 break;
1353
1354         case LDAP_FILTER_EXT: {
1355                 struct berval ad;
1356                 filter_escape_value_x( &vrf->vrf_mr_value, &tmp, op->o_tmpmemctx );
1357
1358                 if ( vrf->vrf_mr_desc ) {
1359                         ad = vrf->vrf_mr_desc->ad_cname;
1360                 } else {
1361                         ad.bv_len = 0;
1362                         ad.bv_val = "";
1363                 }
1364
1365                 fstr->bv_len = ad.bv_len +
1366                         ( vrf->vrf_mr_dnattrs ? STRLENOF(":dn") : 0 ) +
1367                         ( vrf->vrf_mr_rule_text.bv_len
1368                                 ? vrf->vrf_mr_rule_text.bv_len+1 : 0 ) +
1369                         tmp.bv_len + STRLENOF("(:=)");
1370                 if ( undef ) fstr->bv_len++;
1371                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
1372
1373                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s%s%s:=%s)",
1374                         ad.bv_val,
1375                         vrf->vrf_mr_dnattrs ? ":dn" : "",
1376                         vrf->vrf_mr_rule_text.bv_len ? ":" : "",
1377                         vrf->vrf_mr_rule_text.bv_len ? vrf->vrf_mr_rule_text.bv_val : "",
1378                         tmp.bv_val );
1379
1380                 ber_memfree_x( tmp.bv_val, op->o_tmpmemctx );
1381                 } break;
1382
1383         case SLAPD_FILTER_COMPUTED:
1384                 ber_str2bv_x(
1385                         vrf->vrf_result == LDAP_COMPARE_FALSE ? "(?=false)" :
1386                         vrf->vrf_result == LDAP_COMPARE_TRUE ? "(?=true)" :
1387                         vrf->vrf_result == SLAPD_COMPARE_UNDEFINED
1388                                 ? "(?=undefined)" : "(?=error)",
1389                         vrf->vrf_result == LDAP_COMPARE_FALSE ? STRLENOF("(?=false)") :
1390                         vrf->vrf_result == LDAP_COMPARE_TRUE ? STRLENOF("(?=true)") :
1391                         vrf->vrf_result == SLAPD_COMPARE_UNDEFINED
1392                                 ? STRLENOF("(?=undefined)") : STRLENOF("(?=error)"),
1393                         1, fstr, op->o_tmpmemctx );
1394                 break;
1395
1396         default:
1397                 ber_str2bv_x( "(?=unknown)", STRLENOF("(?=unknown)"),
1398                         1, fstr, op->o_tmpmemctx );
1399                 break;
1400         }
1401 }