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 1998-2000 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         struct berval *fstr,
  22         const char **text );
  23
  24 static int      get_substring_filter(
  25         Connection *conn,
  26         BerElement *ber,
  27         Filter *f,
  28         struct berval *fstr,
  29         const char **text );
  30
  31 static int filter_escape_value(
  32         struct berval *in,
  33         struct berval *out );
  34
  35 int
  36 get_filter(
  37         Connection *conn,
  38         BerElement *ber,
  39         Filter **filt,
  40         struct berval *fstr,
  41         const char **text )
  42 {
  43         ber_tag_t       tag;
  44         ber_len_t       len;
  45         int             err;
  46         Filter          *f;
  47         struct berval   ftmp = { 0, NULL };
  48         struct berval escaped;
  49
  50 #ifdef NEW_LOGGING
  51         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY, "get_filter: conn %d\n",
  52                    conn->c_connid ));
  53 #else
  54         Debug( LDAP_DEBUG_FILTER, "begin get_filter\n", 0, 0, 0 );
  55 #endif
  56         /*
  57          * A filter looks like this coming in:
  58          *      Filter ::= CHOICE {
  59          *              and             [0]     SET OF Filter,
  60          *              or              [1]     SET OF Filter,
  61          *              not             [2]     Filter,
  62          *              equalityMatch   [3]     AttributeValueAssertion,
  63          *              substrings      [4]     SubstringFilter,
  64          *              greaterOrEqual  [5]     AttributeValueAssertion,
  65          *              lessOrEqual     [6]     AttributeValueAssertion,
  66          *              present         [7]     AttributeType,,
  67          *              approxMatch     [8]     AttributeValueAssertion
  68          *              extensibleMatch [9] MatchingRuleAssertion
  69          *      }
  70          *
  71          *      SubstringFilter ::= SEQUENCE {
  72          *              type               AttributeType,
  73          *              SEQUENCE OF CHOICE {
  74          *                      initial          [0] IA5String,
  75          *                      any              [1] IA5String,
  76          *                      final            [2] IA5String
  77          *              }
  78          *      }
  79          *
  80      *  MatchingRuleAssertion ::= SEQUENCE {
  81      *          matchingRule    [1] MatchingRuleId OPTIONAL,
  82      *          type            [2] AttributeDescription OPTIONAL,
  83      *          matchValue      [3] AssertionValue,
  84      *          dnAttributes    [4] BOOLEAN DEFAULT FALSE
  85          *      }
  86          *
  87          */
  88
  89         tag = ber_peek_tag( ber, &len );
  90
  91         if( tag == LBER_ERROR ) {
  92                 *text = "error decoding filter";
  93                 return SLAPD_DISCONNECT;
  94         }
  95
  96         f = (Filter *) ch_malloc( sizeof(Filter) );
  97         f->f_next = NULL;
  98
  99         err = LDAP_SUCCESS;
 100         *fstr = ftmp;
 101         f->f_choice = tag;
 102
 103         switch ( f->f_choice ) {
 104         case LDAP_FILTER_EQUALITY:
 105 #ifdef NEW_LOGGING
 106                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL2,
 107                            "get_filter: conn %d  EQUALITY\n", conn->c_connid ));
 108 #else
 109                 Debug( LDAP_DEBUG_FILTER, "EQUALITY\n", 0, 0, 0 );
 110 #endif
 111                 err = get_ava( ber, &f->f_ava, SLAP_MR_EQUALITY, text );
 112                 if ( err != LDAP_SUCCESS ) {
 113                         break;
 114                 }
 115
 116                 assert( f->f_ava != NULL );
 117
 118                 filter_escape_value( &f->f_av_value, &escaped );
 119
 120                 fstr->bv_len = sizeof("(=)")-1
 121                         + f->f_av_desc->ad_cname.bv_len
 122                         + escaped.bv_len;
 123
 124                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 125
 126                 sprintf( fstr->bv_val, "(%s=%s)",
 127                         f->f_av_desc->ad_cname.bv_val,
 128                     escaped.bv_val );
 129
 130                 ber_memfree( escaped.bv_val );
 131                 break;
 132
 133         case LDAP_FILTER_SUBSTRINGS:
 134 #ifdef NEW_LOGGING
 135                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 136                            "get_filter: conn %d  SUBSTRINGS\n", conn->c_connid ));
 137 #else
 138                 Debug( LDAP_DEBUG_FILTER, "SUBSTRINGS\n", 0, 0, 0 );
 139 #endif
 140                 err = get_substring_filter( conn, ber, f, fstr, text );
 141                 break;
 142
 143         case LDAP_FILTER_GE:
 144 #ifdef NEW_LOGGING
 145                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 146                            "get_filter: conn %d  GE\n", conn->c_connid ));
 147 #else
 148                 Debug( LDAP_DEBUG_FILTER, "GE\n", 0, 0, 0 );
 149 #endif
 150                 err = get_ava( ber, &f->f_ava, SLAP_MR_ORDERING, text );
 151                 if ( err != LDAP_SUCCESS ) {
 152                         break;
 153                 }
 154
 155                 filter_escape_value( &f->f_av_value, &escaped );
 156
 157                 fstr->bv_len = sizeof("(>=)")-1
 158                         + f->f_av_desc->ad_cname.bv_len
 159                         + escaped.bv_len;
 160
 161                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 162
 163                 sprintf( fstr->bv_val, "(%s>=%s)",
 164                         f->f_av_desc->ad_cname.bv_val,
 165                     escaped.bv_val );
 166
 167                 ber_memfree( escaped.bv_val );
 168                 break;
 169
 170         case LDAP_FILTER_LE:
 171 #ifdef NEW_LOGGING
 172                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 173                            "get_filter: conn %d  LE\n", conn->c_connid ));
 174 #else
 175                 Debug( LDAP_DEBUG_FILTER, "LE\n", 0, 0, 0 );
 176 #endif
 177                 err = get_ava( ber, &f->f_ava, SLAP_MR_ORDERING, text );
 178                 if ( err != LDAP_SUCCESS ) {
 179                         break;
 180                 }
 181
 182
 183                 filter_escape_value( &f->f_av_value, &escaped );
 184
 185                 fstr->bv_len = sizeof("(<=)")-1
 186                         + f->f_av_desc->ad_cname.bv_len
 187                         + escaped.bv_len;
 188
 189                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 190
 191                 sprintf( fstr->bv_val, "(%s<=%s)",
 192                         f->f_av_desc->ad_cname.bv_val,
 193                     escaped.bv_val );
 194
 195                 ber_memfree( escaped.bv_val );
 196                 break;
 197
 198         case LDAP_FILTER_PRESENT: {
 199                 struct berval type;
 200
 201 #ifdef NEW_LOGGING
 202                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 203                            "get_filter: conn %d PRESENT\n", conn->c_connid ));
 204 #else
 205                 Debug( LDAP_DEBUG_FILTER, "PRESENT\n", 0, 0, 0 );
 206 #endif
 207                 if ( ber_scanf( ber, "o", &type ) == LBER_ERROR ) {
 208                         err = SLAPD_DISCONNECT;
 209                         *text = "error decoding filter";
 210                         break;
 211                 }
 212
 213                 f->f_desc = NULL;
 214                 err = slap_bv2ad( &type, &f->f_desc, text );
 215
 216                 if( err != LDAP_SUCCESS ) {
 217                         /* unrecognized attribute description or other error */
 218                         f->f_choice = SLAPD_FILTER_COMPUTED;
 219                         f->f_result = LDAP_COMPARE_FALSE;
 220                         ber_str2bv("(unrecognized=*)",
 221                                 sizeof("(unrecognized=*)")-1, 1, fstr);
 222                         ch_free( type.bv_val );
 223                         err = LDAP_SUCCESS;
 224                         break;
 225                 }
 226
 227                 ch_free( type.bv_val );
 228
 229                 fstr->bv_len = sizeof("(=*)") - 1
 230                         + f->f_desc->ad_cname.bv_len;
 231                 fstr->bv_val = ch_malloc( fstr->bv_len + 1);
 232                 sprintf( fstr->bv_val, "(%s=*)",
 233                         f->f_desc->ad_cname.bv_val );
 234
 235                 } break;
 236
 237         case LDAP_FILTER_APPROX:
 238 #ifdef NEW_LOGGING
 239                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 240                            "get_filter: conn %d  APPROX\n", conn->c_connid ));
 241 #else
 242                 Debug( LDAP_DEBUG_FILTER, "APPROX\n", 0, 0, 0 );
 243 #endif
 244                 err = get_ava( ber, &f->f_ava, SLAP_MR_EQUALITY_APPROX, text );
 245                 if ( err != LDAP_SUCCESS ) {
 246                         break;
 247                 }
 248
 249                 filter_escape_value( &f->f_av_value, &escaped );
 250
 251                 fstr->bv_len = sizeof("(~=)") - 1
 252                         + f->f_av_desc->ad_cname.bv_len
 253                         + escaped.bv_len;
 254                 fstr->bv_val = ch_malloc( fstr->bv_len + 1);
 255
 256                 sprintf( fstr->bv_val, "(%s~=%s)",
 257                         f->f_av_desc->ad_cname.bv_val,
 258                     escaped.bv_val );
 259
 260                 ber_memfree( escaped.bv_val );
 261                 break;
 262
 263         case LDAP_FILTER_AND:
 264 #ifdef NEW_LOGGING
 265                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 266                            "get_filter: conn %d  AND\n", conn->c_connid ));
 267 #else
 268                 Debug( LDAP_DEBUG_FILTER, "AND\n", 0, 0, 0 );
 269 #endif
 270                 err = get_filter_list( conn, ber, &f->f_and, &ftmp, text );
 271                 if ( err != LDAP_SUCCESS ) {
 272                         break;
 273                 }
 274                 fstr->bv_len = sizeof("(&)") - 1 + ftmp.bv_len;
 275                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 276                 sprintf( fstr->bv_val, "(&%s)",
 277                         ftmp.bv_len ? ftmp.bv_val : "" );
 278                 break;
 279
 280         case LDAP_FILTER_OR:
 281 #ifdef NEW_LOGGING
 282                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 283                            "get_filter: conn %d  OR\n", conn->c_connid  ));
 284 #else
 285                 Debug( LDAP_DEBUG_FILTER, "OR\n", 0, 0, 0 );
 286 #endif
 287                 err = get_filter_list( conn, ber, &f->f_and, &ftmp, text );
 288                 if ( err != LDAP_SUCCESS ) {
 289                         break;
 290                 }
 291                 fstr->bv_len = sizeof("(|)") - 1 + ftmp.bv_len;
 292                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 293                 sprintf( fstr->bv_val, "(|%s)",
 294                         ftmp.bv_len ? ftmp.bv_val : "" );
 295                 break;
 296
 297         case LDAP_FILTER_NOT:
 298 #ifdef NEW_LOGGING
 299                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 300                            "get_filter: conn %d  NOT\n", conn->c_connid ));
 301 #else
 302                 Debug( LDAP_DEBUG_FILTER, "NOT\n", 0, 0, 0 );
 303 #endif
 304                 (void) ber_skip_tag( ber, &len );
 305                 err = get_filter( conn, ber, &f->f_not, &ftmp, text );
 306                 if ( err != LDAP_SUCCESS ) {
 307                         break;
 308                 }
 309                 fstr->bv_len = sizeof("(!)") - 1 + ftmp.bv_len;
 310                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 311                 sprintf( fstr->bv_val, "(!%s)",
 312                         ftmp.bv_len ? ftmp.bv_val : "" );
 313                 break;
 314
 315         case LDAP_FILTER_EXT:
 316 #ifdef NEW_LOGGING
 317                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 318                            "get_filter: conn %d  EXTENSIBLE\n", conn->c_connid ));
 319 #else
 320                 Debug( LDAP_DEBUG_FILTER, "EXTENSIBLE\n", 0, 0, 0 );
 321 #endif
 322
 323                 err = get_mra( ber, &f->f_mra, text );
 324                 if ( err != LDAP_SUCCESS ) {
 325                         break;
 326                 }
 327
 328                 assert( f->f_mra != NULL );
 329
 330                 filter_escape_value( &f->f_mr_value, &escaped );
 331
 332                 fstr->bv_len = sizeof("(:dn::=)") - 1
 333                         + (f->f_mr_desc ? f->f_mr_desc->ad_cname.bv_len : 0)
 334                         + f->f_mr_rule_text.bv_len
 335                         + escaped.bv_len;
 336
 337                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 338                 sprintf( fstr->bv_val, "(%s%s%s%s:=%s)",
 339                          (f->f_mr_desc ? f->f_mr_desc->ad_cname.bv_val : ""),
 340                          (f->f_mr_dnattrs ? ":dn" : ""),
 341                          (f->f_mr_rule_text.bv_len ? ":" : ""),
 342                          (f->f_mr_rule_text.bv_len ? f->f_mr_rule_text.bv_val : ""),
 343                          escaped.bv_val );
 344
 345                 ber_memfree( escaped.bv_val );
 346                 break;
 347
 348         default:
 349                 (void) ber_scanf( ber, "x" ); /* skip the element */
 350 #ifdef NEW_LOGGING
 351                 LDAP_LOG(( "filter", LDAP_LEVEL_ERR,
 352                            "get_filter: conn %d unknown filter type=%lu\n",
 353                            conn->c_connid, f->f_choice ));
 354 #else
 355                 Debug( LDAP_DEBUG_ANY, "get_filter: unknown filter type=%lu\n",
 356                        f->f_choice, 0, 0 );
 357 #endif
 358                 f->f_choice = SLAPD_FILTER_COMPUTED;
 359                 f->f_result = SLAPD_COMPARE_UNDEFINED;
 360                 ber_str2bv( "(undefined)", sizeof("(undefined)") - 1,
 361                         1, fstr );
 362                 break;
 363         }
 364
 365         free( ftmp.bv_val );
 366
 367         if ( err != LDAP_SUCCESS ) {
 368                 if ( fstr->bv_val != NULL ) {
 369                         free( fstr->bv_val );
 370                 }
 371
 372                 if( err != SLAPD_DISCONNECT ) {
 373                         /* ignore error */
 374                         f->f_choice = SLAPD_FILTER_COMPUTED;
 375                         f->f_result = SLAPD_COMPARE_UNDEFINED;
 376                         ber_str2bv( "(badfilter)", sizeof("(badfilter)") - 1,
 377                                 1, fstr );
 378                         err = LDAP_SUCCESS;
 379                         *filt = f;
 380
 381                 } else {
 382                         free(f);
 383                 }
 384         } else {
 385                 *filt = f;
 386         }
 387
 388 #ifdef NEW_LOGGING
 389         LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL2,
 390                 "get_filter: conn %d exit\n", conn->c_connid ));
 391 #else
 392         Debug( LDAP_DEBUG_FILTER, "end get_filter %d\n", err, 0, 0 );
 393 #endif
 394         return( err );
 395 }
 396
 397 static int
 398 get_filter_list( Connection *conn, BerElement *ber,
 399         Filter **f, struct berval *fstr,
 400         const char **text )
 401 {
 402         Filter          **new;
 403         int             err;
 404         ber_tag_t       tag;
 405         ber_len_t       len;
 406         char            *last;
 407         struct berval   ftmp;
 408
 409 #ifdef NEW_LOGGING
 410         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 411                    "get_filter_list: conn %d start\n", conn->c_connid ));
 412 #else
 413         Debug( LDAP_DEBUG_FILTER, "begin get_filter_list\n", 0, 0, 0 );
 414 #endif
 415         new = f;
 416         for ( tag = ber_first_element( ber, &len, &last ); tag != LBER_DEFAULT;
 417             tag = ber_next_element( ber, &len, last ) )
 418         {
 419                 err = get_filter( conn, ber, new, &ftmp, text );
 420                 if ( err != LDAP_SUCCESS )
 421                         return( err );
 422
 423                 if ( !fstr->bv_len ) {
 424                         *fstr = ftmp;
 425                 } else {
 426                         int i = fstr->bv_len;
 427                         fstr->bv_len += ftmp.bv_len;
 428                         fstr->bv_val = ch_realloc( fstr->bv_val,
 429                                 fstr->bv_len + 1 );
 430                         strcpy( fstr->bv_val+i, ftmp.bv_val );
 431                         free( ftmp.bv_val );
 432                 }
 433                 new = &(*new)->f_next;
 434         }
 435         *new = NULL;
 436
 437 #ifdef NEW_LOGGING
 438         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 439                    "get_filter_list: conn %d exit\n", conn->c_connid ));
 440 #else
 441         Debug( LDAP_DEBUG_FILTER, "end get_filter_list\n", 0, 0, 0 );
 442 #endif
 443         return( LDAP_SUCCESS );
 444 }
 445
 446 static int
 447 get_substring_filter(
 448     Connection  *conn,
 449     BerElement  *ber,
 450     Filter      *f,
 451     struct berval       *fstr,
 452         const char      **text
 453 )
 454 {
 455         ber_tag_t       tag;
 456         ber_len_t       len;
 457         ber_tag_t       rc;
 458         struct berval value;
 459         struct berval escaped;
 460         char            *last;
 461         struct berval bv;
 462         *text = "error decoding filter";
 463
 464 #ifdef NEW_LOGGING
 465         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 466                    "get_substring_filter: conn %d  begin\n", conn->c_connid ));
 467 #else
 468         Debug( LDAP_DEBUG_FILTER, "begin get_substring_filter\n", 0, 0, 0 );
 469 #endif
 470         if ( ber_scanf( ber, "{o" /*}*/, &bv ) == LBER_ERROR ) {
 471                 return SLAPD_DISCONNECT;
 472         }
 473
 474         f->f_sub = ch_calloc( 1, sizeof(SubstringsAssertion) );
 475         f->f_sub_desc = NULL;
 476         rc = slap_bv2ad( &bv, &f->f_sub_desc, text );
 477
 478         ch_free( bv.bv_val );
 479
 480         if( rc != LDAP_SUCCESS ) {
 481                 text = NULL;
 482                 ch_free( f->f_sub );
 483                 f->f_choice = SLAPD_FILTER_COMPUTED;
 484                 f->f_result = SLAPD_COMPARE_UNDEFINED;
 485                 ber_str2bv( "(undefined)", sizeof("(undefined)")-1, 1, fstr );
 486                 return LDAP_SUCCESS;
 487         }
 488
 489         f->f_sub_initial.bv_val = NULL;
 490         f->f_sub_any = NULL;
 491         f->f_sub_final.bv_val = NULL;
 492
 493         fstr->bv_len = sizeof("(=" /*)*/) - 1 +
 494                 f->f_sub_desc->ad_cname.bv_len;
 495         fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 496         sprintf( fstr->bv_val, "(%s=" /*)*/, f->f_sub_desc->ad_cname.bv_val );
 497
 498         for ( tag = ber_first_element( ber, &len, &last ); tag != LBER_DEFAULT;
 499             tag = ber_next_element( ber, &len, last ) )
 500         {
 501                 unsigned usage;
 502
 503                 rc = ber_scanf( ber, "o", &value );
 504                 if ( rc == LBER_ERROR ) {
 505                         rc = SLAPD_DISCONNECT;
 506                         goto return_error;
 507                 }
 508
 509                 if ( value.bv_val == NULL || value.bv_len == 0 ) {
 510                         rc = LDAP_INVALID_SYNTAX;
 511                         goto return_error;
 512                 }
 513
 514                 switch ( tag ) {
 515                 case LDAP_SUBSTRING_INITIAL:
 516                         usage = SLAP_MR_SUBSTR_INITIAL;
 517                         break;
 518
 519                 case LDAP_SUBSTRING_ANY:
 520                         usage = SLAP_MR_SUBSTR_ANY;
 521                         break;
 522
 523                 case LDAP_SUBSTRING_FINAL:
 524                         usage = SLAP_MR_SUBSTR_FINAL;
 525                         break;
 526
 527                 default:
 528                         rc = LDAP_PROTOCOL_ERROR;
 529
 530 #ifdef NEW_LOGGING
 531                         LDAP_LOG(( "filter", LDAP_LEVEL_ERR,
 532                                    "get_filter_substring: conn %d  unknown substring choice=%ld\n",
 533                                    conn->c_connid, (long)tag ));
 534 #else
 535                         Debug( LDAP_DEBUG_FILTER,
 536                                 "  unknown substring choice=%ld\n",
 537                                 (long) tag, 0, 0 );
 538 #endif
 539                         free( value.bv_val );
 540                         goto return_error;
 541                 }
 542
 543                 rc = value_normalize( f->f_sub_desc, usage, &value, &bv, text );
 544                 free( value.bv_val );
 545
 546                 if( rc != LDAP_SUCCESS ) {
 547                         goto return_error;
 548                 }
 549
 550                 value = bv;
 551
 552                 rc = LDAP_PROTOCOL_ERROR;
 553
 554                 switch ( tag ) {
 555                 case LDAP_SUBSTRING_INITIAL:
 556 #ifdef NEW_LOGGING
 557                         LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 558                                    "get_substring_filter: conn %d  INITIAL\n",
 559                                    conn->c_connid ));
 560 #else
 561                         Debug( LDAP_DEBUG_FILTER, "  INITIAL\n", 0, 0, 0 );
 562 #endif
 563
 564                         if ( f->f_sub_initial.bv_val != NULL
 565                                 || f->f_sub_any != NULL
 566                                 || f->f_sub_final.bv_val != NULL )
 567                         {
 568                                 free( value.bv_val );
 569                                 goto return_error;
 570                         }
 571
 572                         f->f_sub_initial = value;
 573
 574                         if( fstr->bv_val ) {
 575                                 int i = fstr->bv_len;
 576                                 filter_escape_value( &value, &escaped );
 577                                 fstr->bv_len += escaped.bv_len;
 578                                 fstr->bv_val = ch_realloc( fstr->bv_val,
 579                                         fstr->bv_len + 1 );
 580                                 strcpy( fstr->bv_val+i, escaped.bv_val );
 581                                 ber_memfree( escaped.bv_val );
 582                         }
 583                         break;
 584
 585                 case LDAP_SUBSTRING_ANY:
 586 #ifdef NEW_LOGGING
 587                         LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 588                                    "get_substring_filter: conn %d  ANY\n",
 589                                    conn->c_connid ));
 590 #else
 591                         Debug( LDAP_DEBUG_FILTER, "  ANY\n", 0, 0, 0 );
 592 #endif
 593
 594                         if ( f->f_sub_final.bv_val != NULL ) {
 595                                 free( value.bv_val );
 596                                 goto return_error;
 597                         }
 598
 599                         bvarray_add( &f->f_sub_any, &value );
 600
 601                         if( fstr->bv_val ) {
 602                                 int i = fstr->bv_len;
 603                                 filter_escape_value( &value, &escaped );
 604                                 fstr->bv_len += escaped.bv_len + 2;
 605                                 fstr->bv_val = ch_realloc( fstr->bv_val,
 606                                         fstr->bv_len + 1 );
 607                                 strcpy( fstr->bv_val+i, "*" );
 608                                 strcpy( fstr->bv_val+i+1, escaped.bv_val );
 609                                 ber_memfree( escaped.bv_val );
 610                         }
 611                         break;
 612
 613                 case LDAP_SUBSTRING_FINAL:
 614 #ifdef NEW_LOGGING
 615                         LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 616                                    "get_substring_filter: conn %d  FINAL\n",
 617                                    conn->c_connid ));
 618 #else
 619                         Debug( LDAP_DEBUG_FILTER, "  FINAL\n", 0, 0, 0 );
 620 #endif
 621
 622                         if ( f->f_sub_final.bv_val != NULL ) {
 623                                 free( value.bv_val );
 624                                 goto return_error;
 625                         }
 626
 627                         f->f_sub_final = value;
 628
 629                         if( fstr->bv_val ) {
 630                                 int i = fstr->bv_len;
 631                                 filter_escape_value( &value, &escaped );
 632                                 fstr->bv_len += escaped.bv_len + 2;
 633                                 fstr->bv_val = ch_realloc( fstr->bv_val,
 634                                         fstr->bv_len + 1 );
 635                                 strcpy( fstr->bv_val+i, "*" );
 636                                 strcpy( fstr->bv_val+i+1, escaped.bv_val );
 637                                 ber_memfree( escaped.bv_val );
 638                         }
 639                         break;
 640
 641                 default:
 642 #ifdef NEW_LOGGING
 643                         LDAP_LOG(( "filter", LDAP_LEVEL_INFO,
 644                                    "get_substring_filter: conn %d  unknown substring type %ld\n",
 645                                    conn->c_connid, (long)tag ));
 646 #else
 647                         Debug( LDAP_DEBUG_FILTER,
 648                                 "  unknown substring type=%ld\n",
 649                                 (long) tag, 0, 0 );
 650 #endif
 651
 652                         free( value.bv_val );
 653
 654 return_error:
 655 #ifdef NEW_LOGGING
 656                         LDAP_LOG(( "filter", LDAP_LEVEL_INFO,
 657                                    "get_substring_filter: conn %d  error %ld\n",
 658                                    conn->c_connid, (long)rc ));
 659 #else
 660                         Debug( LDAP_DEBUG_FILTER, "  error=%ld\n",
 661                                 (long) rc, 0, 0 );
 662 #endif
 663                         if( fstr->bv_val ) {
 664                                 free( fstr->bv_val );
 665                                 fstr->bv_val = NULL;
 666                                 fstr->bv_len = 0;
 667                         }
 668
 669                         free( f->f_sub_initial.bv_val );
 670                         bvarray_free( f->f_sub_any );
 671                         free( f->f_sub_final.bv_val );
 672                         ch_free( f->f_sub );
 673                         return rc;
 674                 }
 675         }
 676
 677         if( fstr->bv_val ) {
 678                 int i = fstr->bv_len;
 679                 fstr->bv_len += 3;
 680                 fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 3 );
 681                 if ( f->f_sub_final.bv_val == NULL ) {
 682                         strcpy( fstr->bv_val+i, "*" );
 683                         i++;
 684                 }
 685                 strcpy( fstr->bv_val+i, /*(*/ ")" );
 686         }
 687
 688 #ifdef NEW_LOGGING
 689         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 690                    "get_substring_filter: conn %d exit\n", conn->c_connid ));
 691 #else
 692         Debug( LDAP_DEBUG_FILTER, "end get_substring_filter\n", 0, 0, 0 );
 693 #endif
 694         return( LDAP_SUCCESS );
 695 }
 696
 697 void
 698 filter_free( Filter *f )
 699 {
 700         Filter  *p, *next;
 701
 702         if ( f == NULL ) {
 703                 return;
 704         }
 705
 706         switch ( f->f_choice ) {
 707         case LDAP_FILTER_PRESENT:
 708                 break;
 709
 710         case LDAP_FILTER_EQUALITY:
 711         case LDAP_FILTER_GE:
 712         case LDAP_FILTER_LE:
 713         case LDAP_FILTER_APPROX:
 714                 ava_free( f->f_ava, 1 );
 715                 break;
 716
 717         case LDAP_FILTER_SUBSTRINGS:
 718                 if ( f->f_sub_initial.bv_val != NULL ) {
 719                         free( f->f_sub_initial.bv_val );
 720                 }
 721                 bvarray_free( f->f_sub_any );
 722                 if ( f->f_sub_final.bv_val != NULL ) {
 723                         free( f->f_sub_final.bv_val );
 724                 }
 725                 ch_free( f->f_sub );
 726                 break;
 727
 728         case LDAP_FILTER_AND:
 729         case LDAP_FILTER_OR:
 730         case LDAP_FILTER_NOT:
 731                 for ( p = f->f_list; p != NULL; p = next ) {
 732                         next = p->f_next;
 733                         filter_free( p );
 734                 }
 735                 break;
 736
 737         case SLAPD_FILTER_COMPUTED:
 738                 break;
 739
 740         default:
 741 #ifdef NEW_LOGGING
 742                 LDAP_LOG(( "filter", LDAP_LEVEL_ERR,
 743                            "filter_free: unknown filter type %lu\n", f->f_choice ));
 744 #else
 745                 Debug( LDAP_DEBUG_ANY, "filter_free: unknown filter type=%lu\n",
 746                        f->f_choice, 0, 0 );
 747 #endif
 748                 break;
 749         }
 750
 751         free( f );
 752 }
 753
 754 #ifdef LDAP_DEBUG
 755 void
 756 filter_print( Filter *f )
 757 {
 758         int     i;
 759         Filter  *p;
 760         struct berval escaped;
 761
 762         if ( f == NULL ) {
 763                 fprintf( stderr, "No filter!" );
 764         }
 765
 766         switch ( f->f_choice ) {
 767         case LDAP_FILTER_EQUALITY:
 768                 filter_escape_value( &f->f_av_value, &escaped );
 769                 fprintf( stderr, "(%s=%s)",
 770                         f->f_av_desc->ad_cname.bv_val,
 771                     escaped.bv_val );
 772                 ber_memfree( escaped.bv_val );
 773                 break;
 774
 775         case LDAP_FILTER_GE:
 776                 filter_escape_value( &f->f_av_value, &escaped );
 777                 fprintf( stderr, "(%s>=%s)",
 778                         f->f_av_desc->ad_cname.bv_val,
 779                     escaped.bv_val );
 780                 ber_memfree( escaped.bv_val );
 781                 break;
 782
 783         case LDAP_FILTER_LE:
 784                 filter_escape_value( &f->f_av_value, &escaped );
 785                 fprintf( stderr, "(%s<=%s)",
 786                         f->f_ava->aa_desc->ad_cname.bv_val,
 787                     escaped.bv_val );
 788                 ber_memfree( escaped.bv_val );
 789                 break;
 790
 791         case LDAP_FILTER_APPROX:
 792                 filter_escape_value( &f->f_av_value, &escaped );
 793                 fprintf( stderr, "(%s~=%s)",
 794                         f->f_ava->aa_desc->ad_cname.bv_val,
 795                     escaped.bv_val );
 796                 ber_memfree( escaped.bv_val );
 797                 break;
 798
 799         case LDAP_FILTER_SUBSTRINGS:
 800                 fprintf( stderr, "(%s=" /*)*/,
 801                         f->f_sub_desc->ad_cname.bv_val );
 802                 if ( f->f_sub_initial.bv_val != NULL ) {
 803                         filter_escape_value( &f->f_sub_initial, &escaped );
 804                         fprintf( stderr, "%s",
 805                                 escaped.bv_val );
 806                         ber_memfree( escaped.bv_val );
 807                 }
 808                 if ( f->f_sub_any != NULL ) {
 809                         for ( i = 0; f->f_sub_any[i].bv_val != NULL; i++ ) {
 810                                 filter_escape_value( &f->f_sub_any[i], &escaped );
 811                                 fprintf( stderr, "*%s",
 812                                         escaped.bv_val );
 813                                 ber_memfree( escaped.bv_val );
 814                         }
 815                 }
 816                 if ( f->f_sub_final.bv_val != NULL ) {
 817                         filter_escape_value( &f->f_sub_final, &escaped );
 818                         fprintf( stderr,
 819                                 "*%s", escaped.bv_val );
 820                         ber_memfree( escaped.bv_val );
 821                 }
 822                 fprintf( stderr, /*(*/ ")" );
 823                 break;
 824
 825         case LDAP_FILTER_PRESENT:
 826                 fprintf( stderr, "(%s=*)",
 827                         f->f_desc->ad_cname.bv_val );
 828                 break;
 829
 830         case LDAP_FILTER_AND:
 831         case LDAP_FILTER_OR:
 832         case LDAP_FILTER_NOT:
 833                 fprintf( stderr, "(%c" /*)*/,
 834                         f->f_choice == LDAP_FILTER_AND ? '&' :
 835                     f->f_choice == LDAP_FILTER_OR ? '|' : '!' );
 836                 for ( p = f->f_list; p != NULL; p = p->f_next ) {
 837                         filter_print( p );
 838                 }
 839                 fprintf( stderr, /*(*/ ")" );
 840                 break;
 841
 842         case SLAPD_FILTER_COMPUTED:
 843                 fprintf( stderr, "(?=%s)",
 844                         f->f_result == LDAP_COMPARE_FALSE ? "false" :
 845                         f->f_result == LDAP_COMPARE_TRUE ? "true" :
 846                         f->f_result == SLAPD_COMPARE_UNDEFINED ? "undefined" :
 847                         "error" );
 848                 break;
 849
 850         default:
 851                 fprintf( stderr, "(unknown-filter=%lu)", f->f_choice );
 852                 break;
 853         }
 854 }
 855
 856 #endif /* ldap_debug */
 857
 858 static int filter_escape_value(
 859         struct berval *in,
 860         struct berval *out )
 861 {
 862         ber_len_t i;
 863         assert( in );
 864         assert( out );
 865
 866         out->bv_val = (char *) ch_malloc( ( in->bv_len * 3 ) + 1 );
 867         out->bv_len = 0;
 868
 869         for( i=0; i < in->bv_len ; i++ ) {
 870                 if( FILTER_ESCAPE(in->bv_val[i]) ) {
 871                         out->bv_val[out->bv_len++] = SLAP_ESCAPE_CHAR;
 872                         out->bv_val[out->bv_len++] = SLAP_ESCAPE_HI( in->bv_val[i] );
 873                         out->bv_val[out->bv_len++] = SLAP_ESCAPE_LO( in->bv_val[i] );
 874                 } else {
 875                         out->bv_val[out->bv_len++] = in->bv_val[i];
 876                 }
 877         }
 878
 879         out->bv_val[out->bv_len] = '\0';
 880         return LDAP_SUCCESS;
 881 }