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

   1 /* filter.c - routines for parsing and dealing with filters */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
   5  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   6  */
   7
   8 #include "portable.h"
   9
  10 #include <stdio.h>
  11
  12 #include <ac/socket.h>
  13 #include <ac/string.h>
  14
  15 #include "slap.h"
  16
  17 static int      get_filter_list(
  18         Connection *conn,
  19         BerElement *ber,
  20         Filter **f,
  21         const char **text );
  22
  23 static int      get_substring_filter(
  24         Connection *conn,
  25         BerElement *ber,
  26         Filter *f,
  27         const char **text );
  28
  29 static int filter_escape_value(
  30         struct berval *in,
  31         struct berval *out );
  32
  33 int
  34 get_filter(
  35         Connection *conn,
  36         BerElement *ber,
  37         Filter **filt,
  38         const char **text )
  39 {
  40         ber_tag_t       tag;
  41         ber_len_t       len;
  42         int             err;
  43         Filter          *f;
  44
  45 #ifdef NEW_LOGGING
  46         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY, "get_filter: conn %d\n",
  47                 conn->c_connid ));
  48 #else
  49         Debug( LDAP_DEBUG_FILTER, "begin get_filter\n", 0, 0, 0 );
  50 #endif
  51         /*
  52          * A filter looks like this coming in:
  53          *      Filter ::= CHOICE {
  54          *              and             [0]     SET OF Filter,
  55          *              or              [1]     SET OF Filter,
  56          *              not             [2]     Filter,
  57          *              equalityMatch   [3]     AttributeValueAssertion,
  58          *              substrings      [4]     SubstringFilter,
  59          *              greaterOrEqual  [5]     AttributeValueAssertion,
  60          *              lessOrEqual     [6]     AttributeValueAssertion,
  61          *              present         [7]     AttributeType,,
  62          *              approxMatch     [8]     AttributeValueAssertion
  63          *              extensibleMatch [9] MatchingRuleAssertion
  64          *      }
  65          *
  66          *      SubstringFilter ::= SEQUENCE {
  67          *              type               AttributeType,
  68          *              SEQUENCE OF CHOICE {
  69          *                      initial          [0] IA5String,
  70          *                      any              [1] IA5String,
  71          *                      final            [2] IA5String
  72          *              }
  73          *      }
  74          *
  75          *      MatchingRuleAssertion ::= SEQUENCE {
  76          *              matchingRule    [1] MatchingRuleId OPTIONAL,
  77          *              type            [2] AttributeDescription OPTIONAL,
  78          *              matchValue      [3] AssertionValue,
  79          *              dnAttributes    [4] BOOLEAN DEFAULT FALSE
  80          *      }
  81          *
  82          */
  83
  84         tag = ber_peek_tag( ber, &len );
  85
  86         if( tag == LBER_ERROR ) {
  87                 *text = "error decoding filter";
  88                 return SLAPD_DISCONNECT;
  89         }
  90
  91         f = (Filter *) ch_malloc( sizeof(Filter) );
  92         f->f_next = NULL;
  93
  94         err = LDAP_SUCCESS;
  95         f->f_choice = tag;
  96
  97         switch ( f->f_choice ) {
  98         case LDAP_FILTER_EQUALITY:
  99 #ifdef NEW_LOGGING
 100                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL2,
 101                         "get_filter: conn %d  EQUALITY\n", conn->c_connid ));
 102 #else
 103                 Debug( LDAP_DEBUG_FILTER, "EQUALITY\n", 0, 0, 0 );
 104 #endif
 105                 err = get_ava( ber, &f->f_ava, SLAP_MR_EQUALITY, text );
 106                 if ( err != LDAP_SUCCESS ) {
 107                         break;
 108                 }
 109
 110                 assert( f->f_ava != NULL );
 111                 break;
 112
 113         case LDAP_FILTER_SUBSTRINGS:
 114 #ifdef NEW_LOGGING
 115                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 116                         "get_filter: conn %d  SUBSTRINGS\n", conn->c_connid ));
 117 #else
 118                 Debug( LDAP_DEBUG_FILTER, "SUBSTRINGS\n", 0, 0, 0 );
 119 #endif
 120                 err = get_substring_filter( conn, ber, f, text );
 121                 break;
 122
 123         case LDAP_FILTER_GE:
 124 #ifdef NEW_LOGGING
 125                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 126                         "get_filter: conn %d  GE\n", conn->c_connid ));
 127 #else
 128                 Debug( LDAP_DEBUG_FILTER, "GE\n", 0, 0, 0 );
 129 #endif
 130                 err = get_ava( ber, &f->f_ava, SLAP_MR_ORDERING, text );
 131                 if ( err != LDAP_SUCCESS ) {
 132                         break;
 133                 }
 134                 break;
 135
 136         case LDAP_FILTER_LE:
 137 #ifdef NEW_LOGGING
 138                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 139                         "get_filter: conn %d  LE\n", conn->c_connid ));
 140 #else
 141                 Debug( LDAP_DEBUG_FILTER, "LE\n", 0, 0, 0 );
 142 #endif
 143                 err = get_ava( ber, &f->f_ava, SLAP_MR_ORDERING, text );
 144                 if ( err != LDAP_SUCCESS ) {
 145                         break;
 146                 }
 147                 break;
 148
 149         case LDAP_FILTER_PRESENT: {
 150                 struct berval type;
 151
 152 #ifdef NEW_LOGGING
 153                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 154                         "get_filter: conn %d PRESENT\n", conn->c_connid ));
 155 #else
 156                 Debug( LDAP_DEBUG_FILTER, "PRESENT\n", 0, 0, 0 );
 157 #endif
 158                 if ( ber_scanf( ber, "m", &type ) == LBER_ERROR ) {
 159                         err = SLAPD_DISCONNECT;
 160                         *text = "error decoding filter";
 161                         break;
 162                 }
 163
 164                 f->f_desc = NULL;
 165                 err = slap_bv2ad( &type, &f->f_desc, text );
 166
 167                 if( err != LDAP_SUCCESS ) {
 168                         /* unrecognized attribute description or other error */
 169                         f->f_choice = SLAPD_FILTER_COMPUTED;
 170                         f->f_result = LDAP_COMPARE_FALSE;
 171                         err = LDAP_SUCCESS;
 172                         break;
 173                 }
 174                 } break;
 175
 176         case LDAP_FILTER_APPROX:
 177 #ifdef NEW_LOGGING
 178                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 179                         "get_filter: conn %d  APPROX\n", conn->c_connid ));
 180 #else
 181                 Debug( LDAP_DEBUG_FILTER, "APPROX\n", 0, 0, 0 );
 182 #endif
 183                 err = get_ava( ber, &f->f_ava, SLAP_MR_EQUALITY_APPROX, text );
 184                 if ( err != LDAP_SUCCESS ) {
 185                         break;
 186                 }
 187                 break;
 188
 189         case LDAP_FILTER_AND:
 190 #ifdef NEW_LOGGING
 191                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 192                         "get_filter: conn %d  AND\n", conn->c_connid ));
 193 #else
 194                 Debug( LDAP_DEBUG_FILTER, "AND\n", 0, 0, 0 );
 195 #endif
 196                 err = get_filter_list( conn, ber, &f->f_and, text );
 197                 if ( err != LDAP_SUCCESS ) {
 198                         break;
 199                 }
 200                 break;
 201
 202         case LDAP_FILTER_OR:
 203 #ifdef NEW_LOGGING
 204                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 205                         "get_filter: conn %d  OR\n", conn->c_connid  ));
 206 #else
 207                 Debug( LDAP_DEBUG_FILTER, "OR\n", 0, 0, 0 );
 208 #endif
 209                 err = get_filter_list( conn, ber, &f->f_or, text );
 210                 if ( err != LDAP_SUCCESS ) {
 211                         break;
 212                 }
 213                 break;
 214
 215         case LDAP_FILTER_NOT:
 216 #ifdef NEW_LOGGING
 217                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 218                         "get_filter: conn %d  NOT\n", conn->c_connid ));
 219 #else
 220                 Debug( LDAP_DEBUG_FILTER, "NOT\n", 0, 0, 0 );
 221 #endif
 222                 (void) ber_skip_tag( ber, &len );
 223                 err = get_filter( conn, ber, &f->f_not, text );
 224                 if ( err != LDAP_SUCCESS ) {
 225                         break;
 226                 }
 227                 break;
 228
 229         case LDAP_FILTER_EXT:
 230 #ifdef NEW_LOGGING
 231                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 232                         "get_filter: conn %d  EXTENSIBLE\n", conn->c_connid ));
 233 #else
 234                 Debug( LDAP_DEBUG_FILTER, "EXTENSIBLE\n", 0, 0, 0 );
 235 #endif
 236
 237                 err = get_mra( ber, &f->f_mra, text );
 238                 if ( err != LDAP_SUCCESS ) {
 239                         break;
 240                 }
 241
 242                 assert( f->f_mra != NULL );
 243                 break;
 244
 245         default:
 246                 (void) ber_scanf( ber, "x" ); /* skip the element */
 247 #ifdef NEW_LOGGING
 248                 LDAP_LOG(( "filter", LDAP_LEVEL_ERR,
 249                         "get_filter: conn %d unknown filter type=%lu\n",
 250                         conn->c_connid, f->f_choice ));
 251 #else
 252                 Debug( LDAP_DEBUG_ANY, "get_filter: unknown filter type=%lu\n",
 253                         f->f_choice, 0, 0 );
 254 #endif
 255                 f->f_choice = SLAPD_FILTER_COMPUTED;
 256                 f->f_result = SLAPD_COMPARE_UNDEFINED;
 257                 break;
 258         }
 259
 260         if ( err != LDAP_SUCCESS ) {
 261                 if( err != SLAPD_DISCONNECT ) {
 262                         /* ignore error */
 263                         f->f_choice = SLAPD_FILTER_COMPUTED;
 264                         f->f_result = SLAPD_COMPARE_UNDEFINED;
 265                         err = LDAP_SUCCESS;
 266                         *filt = f;
 267
 268                 } else {
 269                         free(f);
 270                 }
 271
 272         } else {
 273                 *filt = f;
 274         }
 275
 276 #ifdef NEW_LOGGING
 277         LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL2,
 278                 "get_filter: conn %d exit\n", conn->c_connid ));
 279 #else
 280         Debug( LDAP_DEBUG_FILTER, "end get_filter %d\n", err, 0, 0 );
 281 #endif
 282         return( err );
 283 }
 284
 285 static int
 286 get_filter_list( Connection *conn, BerElement *ber,
 287         Filter **f,
 288         const char **text )
 289 {
 290         Filter          **new;
 291         int             err;
 292         ber_tag_t       tag;
 293         ber_len_t       len;
 294         char            *last;
 295
 296 #ifdef NEW_LOGGING
 297         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 298                 "get_filter_list: conn %d start\n", conn->c_connid ));
 299 #else
 300         Debug( LDAP_DEBUG_FILTER, "begin get_filter_list\n", 0, 0, 0 );
 301 #endif
 302         new = f;
 303         for ( tag = ber_first_element( ber, &len, &last ); tag != LBER_DEFAULT;
 304                 tag = ber_next_element( ber, &len, last ) )
 305         {
 306                 err = get_filter( conn, ber, new, text );
 307                 if ( err != LDAP_SUCCESS )
 308                         return( err );
 309                 new = &(*new)->f_next;
 310         }
 311         *new = NULL;
 312
 313 #ifdef NEW_LOGGING
 314         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 315                 "get_filter_list: conn %d exit\n", conn->c_connid ));
 316 #else
 317         Debug( LDAP_DEBUG_FILTER, "end get_filter_list\n", 0, 0, 0 );
 318 #endif
 319         return( LDAP_SUCCESS );
 320 }
 321
 322 static int
 323 get_substring_filter(
 324         Connection      *conn,
 325         BerElement      *ber,
 326         Filter  *f,
 327         const char      **text )
 328 {
 329         ber_tag_t       tag;
 330         ber_len_t       len;
 331         ber_tag_t       rc;
 332         struct berval value;
 333         char            *last;
 334         struct berval bv;
 335         *text = "error decoding filter";
 336
 337 #ifdef NEW_LOGGING
 338         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 339                 "get_substring_filter: conn %d  begin\n", conn->c_connid ));
 340 #else
 341         Debug( LDAP_DEBUG_FILTER, "begin get_substring_filter\n", 0, 0, 0 );
 342 #endif
 343         if ( ber_scanf( ber, "{m" /*}*/, &bv ) == LBER_ERROR ) {
 344                 return SLAPD_DISCONNECT;
 345         }
 346
 347         f->f_sub = ch_calloc( 1, sizeof(SubstringsAssertion) );
 348         f->f_sub_desc = NULL;
 349         rc = slap_bv2ad( &bv, &f->f_sub_desc, text );
 350
 351         if( rc != LDAP_SUCCESS ) {
 352                 text = NULL;
 353                 ch_free( f->f_sub );
 354                 f->f_choice = SLAPD_FILTER_COMPUTED;
 355                 f->f_result = SLAPD_COMPARE_UNDEFINED;
 356                 return LDAP_SUCCESS;
 357         }
 358
 359         f->f_sub_initial.bv_val = NULL;
 360         f->f_sub_any = NULL;
 361         f->f_sub_final.bv_val = NULL;
 362
 363         for ( tag = ber_first_element( ber, &len, &last ); tag != LBER_DEFAULT;
 364                 tag = ber_next_element( ber, &len, last ) )
 365         {
 366                 unsigned usage;
 367
 368                 rc = ber_scanf( ber, "m", &value );
 369                 if ( rc == LBER_ERROR ) {
 370                         rc = SLAPD_DISCONNECT;
 371                         goto return_error;
 372                 }
 373
 374                 if ( value.bv_val == NULL || value.bv_len == 0 ) {
 375                         rc = LDAP_INVALID_SYNTAX;
 376                         goto return_error;
 377                 }
 378
 379                 switch ( tag ) {
 380                 case LDAP_SUBSTRING_INITIAL:
 381                         usage = SLAP_MR_SUBSTR_INITIAL;
 382                         break;
 383
 384                 case LDAP_SUBSTRING_ANY:
 385                         usage = SLAP_MR_SUBSTR_ANY;
 386                         break;
 387
 388                 case LDAP_SUBSTRING_FINAL:
 389                         usage = SLAP_MR_SUBSTR_FINAL;
 390                         break;
 391
 392                 default:
 393                         rc = LDAP_PROTOCOL_ERROR;
 394
 395 #ifdef NEW_LOGGING
 396                         LDAP_LOG(( "filter", LDAP_LEVEL_ERR,
 397                                 "get_filter_substring: conn %d  unknown substring choice=%ld\n",
 398                                 conn->c_connid, (long)tag ));
 399 #else
 400                         Debug( LDAP_DEBUG_FILTER,
 401                                 "  unknown substring choice=%ld\n",
 402                                 (long) tag, 0, 0 );
 403 #endif
 404                         goto return_error;
 405                 }
 406
 407                 /* valiate using equality matching rule validator! */
 408                 rc = value_validate( f->f_sub_desc->ad_type->sat_equality,
 409                         &value, text );
 410                 if( rc != LDAP_SUCCESS ) {
 411                         goto return_error;
 412                 }
 413
 414                 rc = value_normalize( f->f_sub_desc, usage,
 415                         &value, &bv, text );
 416                 if( rc != LDAP_SUCCESS ) {
 417                         goto return_error;
 418                 }
 419
 420                 value = bv;
 421
 422                 rc = LDAP_PROTOCOL_ERROR;
 423
 424                 switch ( tag ) {
 425                 case LDAP_SUBSTRING_INITIAL:
 426 #ifdef NEW_LOGGING
 427                         LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 428                                 "get_substring_filter: conn %d  INITIAL\n",
 429                                 conn->c_connid ));
 430 #else
 431                         Debug( LDAP_DEBUG_FILTER, "  INITIAL\n", 0, 0, 0 );
 432 #endif
 433
 434                         if ( f->f_sub_initial.bv_val != NULL
 435                                 || f->f_sub_any != NULL
 436                                 || f->f_sub_final.bv_val != NULL )
 437                         {
 438                                 free( value.bv_val );
 439                                 goto return_error;
 440                         }
 441
 442                         f->f_sub_initial = value;
 443                         break;
 444
 445                 case LDAP_SUBSTRING_ANY:
 446 #ifdef NEW_LOGGING
 447                         LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 448                                 "get_substring_filter: conn %d  ANY\n",
 449                                 conn->c_connid ));
 450 #else
 451                         Debug( LDAP_DEBUG_FILTER, "  ANY\n", 0, 0, 0 );
 452 #endif
 453
 454                         if ( f->f_sub_final.bv_val != NULL ) {
 455                                 free( value.bv_val );
 456                                 goto return_error;
 457                         }
 458
 459                         ber_bvarray_add( &f->f_sub_any, &value );
 460                         break;
 461
 462                 case LDAP_SUBSTRING_FINAL:
 463 #ifdef NEW_LOGGING
 464                         LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 465                                 "get_substring_filter: conn %d  FINAL\n",
 466                                 conn->c_connid ));
 467 #else
 468                         Debug( LDAP_DEBUG_FILTER, "  FINAL\n", 0, 0, 0 );
 469 #endif
 470
 471                         if ( f->f_sub_final.bv_val != NULL ) {
 472                                 free( value.bv_val );
 473                                 goto return_error;
 474                         }
 475
 476                         f->f_sub_final = value;
 477                         break;
 478
 479                 default:
 480 #ifdef NEW_LOGGING
 481                         LDAP_LOG(( "filter", LDAP_LEVEL_INFO,
 482                                 "get_substring_filter: conn %d  unknown substring type %ld\n",
 483                                 conn->c_connid, (long)tag ));
 484 #else
 485                         Debug( LDAP_DEBUG_FILTER,
 486                                 "  unknown substring type=%ld\n",
 487                                 (long) tag, 0, 0 );
 488 #endif
 489
 490                         free( value.bv_val );
 491
 492 return_error:
 493 #ifdef NEW_LOGGING
 494                         LDAP_LOG(( "filter", LDAP_LEVEL_INFO,
 495                                 "get_substring_filter: conn %d  error %ld\n",
 496                                 conn->c_connid, (long)rc ));
 497 #else
 498                         Debug( LDAP_DEBUG_FILTER, "  error=%ld\n",
 499                                 (long) rc, 0, 0 );
 500 #endif
 501                         free( f->f_sub_initial.bv_val );
 502                         ber_bvarray_free( f->f_sub_any );
 503                         free( f->f_sub_final.bv_val );
 504                         ch_free( f->f_sub );
 505                         return rc;
 506                 }
 507         }
 508
 509 #ifdef NEW_LOGGING
 510         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 511                 "get_substring_filter: conn %d exit\n", conn->c_connid ));
 512 #else
 513         Debug( LDAP_DEBUG_FILTER, "end get_substring_filter\n", 0, 0, 0 );
 514 #endif
 515         return( LDAP_SUCCESS );
 516 }
 517
 518 void
 519 filter_free( Filter *f )
 520 {
 521         Filter  *p, *next;
 522
 523         if ( f == NULL ) {
 524                 return;
 525         }
 526
 527         switch ( f->f_choice ) {
 528         case LDAP_FILTER_PRESENT:
 529                 break;
 530
 531         case LDAP_FILTER_EQUALITY:
 532         case LDAP_FILTER_GE:
 533         case LDAP_FILTER_LE:
 534         case LDAP_FILTER_APPROX:
 535                 ava_free( f->f_ava, 1 );
 536                 break;
 537
 538         case LDAP_FILTER_SUBSTRINGS:
 539                 if ( f->f_sub_initial.bv_val != NULL ) {
 540                         free( f->f_sub_initial.bv_val );
 541                 }
 542                 ber_bvarray_free( f->f_sub_any );
 543                 if ( f->f_sub_final.bv_val != NULL ) {
 544                         free( f->f_sub_final.bv_val );
 545                 }
 546                 ch_free( f->f_sub );
 547                 break;
 548
 549         case LDAP_FILTER_AND:
 550         case LDAP_FILTER_OR:
 551         case LDAP_FILTER_NOT:
 552                 for ( p = f->f_list; p != NULL; p = next ) {
 553                         next = p->f_next;
 554                         filter_free( p );
 555                 }
 556                 break;
 557
 558         case LDAP_FILTER_EXT:
 559                 mra_free( f->f_mra, 1 );
 560                 break;
 561
 562         case SLAPD_FILTER_COMPUTED:
 563                 break;
 564
 565         default:
 566 #ifdef NEW_LOGGING
 567                 LDAP_LOG(( "filter", LDAP_LEVEL_ERR,
 568                         "filter_free: unknown filter type %lu\n", f->f_choice ));
 569 #else
 570                 Debug( LDAP_DEBUG_ANY, "filter_free: unknown filter type=%lu\n",
 571                         f->f_choice, 0, 0 );
 572 #endif
 573                 break;
 574         }
 575
 576         free( f );
 577 }
 578
 579 void
 580 filter2bv( Filter *f, struct berval *fstr )
 581 {
 582         int     i;
 583         Filter  *p;
 584         struct berval tmp;
 585         ber_len_t len;
 586
 587         if ( f == NULL ) {
 588                 ber_str2bv( "No filter!", sizeof("No filter!")-1, 1, fstr );
 589                 return;
 590         }
 591
 592         switch ( f->f_choice ) {
 593         case LDAP_FILTER_EQUALITY:
 594                 filter_escape_value( &f->f_av_value, &tmp );
 595
 596                 fstr->bv_len = f->f_av_desc->ad_cname.bv_len +
 597                         tmp.bv_len + ( sizeof("(=)") - 1 );
 598                 fstr->bv_val = malloc( fstr->bv_len + 1 );
 599
 600                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=%s)",
 601                         f->f_av_desc->ad_cname.bv_val,
 602                         tmp.bv_val );
 603
 604                 ber_memfree( tmp.bv_val );
 605                 break;
 606
 607         case LDAP_FILTER_GE:
 608                 filter_escape_value( &f->f_av_value, &tmp );
 609
 610                 fstr->bv_len = f->f_av_desc->ad_cname.bv_len +
 611                         tmp.bv_len + ( sizeof("(>=)") - 1 );
 612                 fstr->bv_val = malloc( fstr->bv_len + 1 );
 613
 614                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s>=%s)",
 615                         f->f_av_desc->ad_cname.bv_val,
 616                         tmp.bv_val );
 617
 618                 ber_memfree( tmp.bv_val );
 619                 break;
 620
 621         case LDAP_FILTER_LE:
 622                 filter_escape_value( &f->f_av_value, &tmp );
 623
 624                 fstr->bv_len = f->f_av_desc->ad_cname.bv_len +
 625                         tmp.bv_len + ( sizeof("(<=)") - 1 );
 626                 fstr->bv_val = malloc( fstr->bv_len + 1 );
 627
 628                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s<=%s)",
 629                         f->f_av_desc->ad_cname.bv_val,
 630                         tmp.bv_val );
 631
 632                 ber_memfree( tmp.bv_val );
 633                 break;
 634
 635         case LDAP_FILTER_APPROX:
 636                 filter_escape_value( &f->f_av_value, &tmp );
 637
 638                 fstr->bv_len = f->f_av_desc->ad_cname.bv_len +
 639                         tmp.bv_len + ( sizeof("(~=)") - 1 );
 640                 fstr->bv_val = malloc( fstr->bv_len + 1 );
 641
 642                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s~=%s)",
 643                         f->f_av_desc->ad_cname.bv_val,
 644                         tmp.bv_val );
 645                 ber_memfree( tmp.bv_val );
 646                 break;
 647
 648         case LDAP_FILTER_SUBSTRINGS:
 649                 fstr->bv_len = f->f_sub_desc->ad_cname.bv_len +
 650                         ( sizeof("(=*)") - 1 );
 651                 fstr->bv_val = malloc( fstr->bv_len + 128 );
 652
 653                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
 654                         f->f_sub_desc->ad_cname.bv_val );
 655
 656                 if ( f->f_sub_initial.bv_val != NULL ) {
 657                         len = fstr->bv_len;
 658
 659                         filter_escape_value( &f->f_sub_initial, &tmp );
 660
 661                         fstr->bv_len += tmp.bv_len;
 662                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 663
 664                         snprintf( &fstr->bv_val[len-2], tmp.bv_len+3,
 665                                 /* "(attr=" */ "%s*)",
 666                                 tmp.bv_val );
 667
 668                         ber_memfree( tmp.bv_val );
 669                 }
 670
 671                 if ( f->f_sub_any != NULL ) {
 672                         for ( i = 0; f->f_sub_any[i].bv_val != NULL; i++ ) {
 673                                 len = fstr->bv_len;
 674                                 filter_escape_value( &f->f_sub_any[i], &tmp );
 675
 676                                 fstr->bv_len += tmp.bv_len + 1;
 677                                 fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 678
 679                                 snprintf( &fstr->bv_val[len-1], tmp.bv_len+3,
 680                                         /* "(attr=[init]*[any*]" */ "%s*)",
 681                                         tmp.bv_val );
 682                                 ber_memfree( tmp.bv_val );
 683                         }
 684                 }
 685
 686                 if ( f->f_sub_final.bv_val != NULL ) {
 687                         len = fstr->bv_len;
 688
 689                         filter_escape_value( &f->f_sub_final, &tmp );
 690
 691                         fstr->bv_len += tmp.bv_len;
 692                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 693
 694                         snprintf( &fstr->bv_val[len-1], tmp.bv_len+3,
 695                                 /* "(attr=[init*][any*]" */ "%s)",
 696                                 tmp.bv_val );
 697
 698                         ber_memfree( tmp.bv_val );
 699                 }
 700
 701                 break;
 702
 703         case LDAP_FILTER_PRESENT:
 704                 fstr->bv_len = f->f_desc->ad_cname.bv_len +
 705                         ( sizeof("(=*)") - 1 );
 706                 fstr->bv_val = malloc( fstr->bv_len + 1 );
 707
 708                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
 709                         f->f_desc->ad_cname.bv_val );
 710                 break;
 711
 712         case LDAP_FILTER_AND:
 713         case LDAP_FILTER_OR:
 714         case LDAP_FILTER_NOT:
 715                 fstr->bv_len = sizeof("(%)") - 1;
 716                 fstr->bv_val = malloc( fstr->bv_len + 128 );
 717
 718                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%c)",
 719                         f->f_choice == LDAP_FILTER_AND ? '&' :
 720                         f->f_choice == LDAP_FILTER_OR ? '|' : '!' );
 721
 722                 for ( p = f->f_list; p != NULL; p = p->f_next ) {
 723                         len = fstr->bv_len;
 724
 725                         filter2bv( p, &tmp );
 726
 727                         fstr->bv_len += tmp.bv_len;
 728                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 729
 730                         snprintf( &fstr->bv_val[len-1], tmp.bv_len + 2,
 731                                 /*"("*/ "%s)", tmp.bv_val );
 732
 733                         ch_free( tmp.bv_val );
 734                 }
 735
 736                 break;
 737
 738         case LDAP_FILTER_EXT:
 739                 filter_escape_value( &f->f_mr_value, &tmp );
 740
 741                 fstr->bv_len = f->f_mr_desc->ad_cname.bv_len +
 742                         ( f->f_mr_dnattrs ? sizeof(":dn")-1 : 0 ) +
 743                         ( f->f_mr_rule_text.bv_len ? f->f_mr_rule_text.bv_len+1 : 0 ) +
 744                         tmp.bv_len + ( sizeof("(:=)") - 1 );
 745                 fstr->bv_val = malloc( fstr->bv_len + 1 );
 746
 747                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s%s%s:=%s)",
 748                         f->f_mr_desc->ad_cname.bv_val,
 749                         f->f_mr_dnattrs ? ":dn" : "",
 750                         f->f_mr_rule_text.bv_len ? ":" : "",
 751                         f->f_mr_rule_text.bv_len ? f->f_mr_rule_text.bv_val : "",
 752                         tmp.bv_val );
 753                 ber_memfree( tmp.bv_val );
 754                 break;
 755
 756         case SLAPD_FILTER_COMPUTED:
 757                 ber_str2bv(
 758                         f->f_result == LDAP_COMPARE_FALSE ? "(?=false)" :
 759                         f->f_result == LDAP_COMPARE_TRUE ? "(?=true)" :
 760                         f->f_result == SLAPD_COMPARE_UNDEFINED ? "(?=undefined)" :
 761                         "(?=error)",
 762                         f->f_result == LDAP_COMPARE_FALSE ? sizeof("(?=false)")-1 :
 763                         f->f_result == LDAP_COMPARE_TRUE ? sizeof("(?=true)")-1 :
 764                         f->f_result == SLAPD_COMPARE_UNDEFINED ? sizeof("(?=undefined)")-1 :
 765                         sizeof("(?=error)")-1,
 766                         1, fstr );
 767                 break;
 768
 769         default:
 770                 ber_str2bv( "(?=unknown)", sizeof("(?=unknown)")-1, 1, fstr );
 771                 break;
 772         }
 773 }
 774
 775 static int filter_escape_value(
 776         struct berval *in,
 777         struct berval *out )
 778 {
 779         ber_len_t i;
 780         assert( in );
 781         assert( out );
 782
 783         out->bv_val = (char *) ch_malloc( ( in->bv_len * 3 ) + 1 );
 784         out->bv_len = 0;
 785
 786         for( i=0; i < in->bv_len ; i++ ) {
 787                 if( FILTER_ESCAPE(in->bv_val[i]) ) {
 788                         out->bv_val[out->bv_len++] = SLAP_ESCAPE_CHAR;
 789                         out->bv_val[out->bv_len++] = SLAP_ESCAPE_HI( in->bv_val[i] );
 790                         out->bv_val[out->bv_len++] = SLAP_ESCAPE_LO( in->bv_val[i] );
 791                 } else {
 792                         out->bv_val[out->bv_len++] = in->bv_val[i];
 793                 }
 794         }
 795
 796         out->bv_val[out->bv_len] = '\0';
 797         return LDAP_SUCCESS;
 798 }