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         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, "m", &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                         err = LDAP_SUCCESS;
 223                         break;
 224                 }
 225
 226                 fstr->bv_len = sizeof("(=*)") - 1
 227                         + f->f_desc->ad_cname.bv_len;
 228                 fstr->bv_val = ch_malloc( fstr->bv_len + 1);
 229                 sprintf( fstr->bv_val, "(%s=*)",
 230                         f->f_desc->ad_cname.bv_val );
 231
 232                 } break;
 233
 234         case LDAP_FILTER_APPROX:
 235 #ifdef NEW_LOGGING
 236                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 237                            "get_filter: conn %d  APPROX\n", conn->c_connid ));
 238 #else
 239                 Debug( LDAP_DEBUG_FILTER, "APPROX\n", 0, 0, 0 );
 240 #endif
 241                 err = get_ava( ber, &f->f_ava, SLAP_MR_EQUALITY_APPROX, text );
 242                 if ( err != LDAP_SUCCESS ) {
 243                         break;
 244                 }
 245
 246                 filter_escape_value( &f->f_av_value, &escaped );
 247
 248                 fstr->bv_len = sizeof("(~=)") - 1
 249                         + f->f_av_desc->ad_cname.bv_len
 250                         + escaped.bv_len;
 251                 fstr->bv_val = ch_malloc( fstr->bv_len + 1);
 252
 253                 sprintf( fstr->bv_val, "(%s~=%s)",
 254                         f->f_av_desc->ad_cname.bv_val,
 255                     escaped.bv_val );
 256
 257                 ber_memfree( escaped.bv_val );
 258                 break;
 259
 260         case LDAP_FILTER_AND:
 261 #ifdef NEW_LOGGING
 262                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 263                            "get_filter: conn %d  AND\n", conn->c_connid ));
 264 #else
 265                 Debug( LDAP_DEBUG_FILTER, "AND\n", 0, 0, 0 );
 266 #endif
 267                 err = get_filter_list( conn, ber, &f->f_and, &ftmp, text );
 268                 if ( err != LDAP_SUCCESS ) {
 269                         break;
 270                 }
 271                 fstr->bv_len = sizeof("(&)") - 1 + ftmp.bv_len;
 272                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 273                 sprintf( fstr->bv_val, "(&%s)",
 274                         ftmp.bv_len ? ftmp.bv_val : "" );
 275                 break;
 276
 277         case LDAP_FILTER_OR:
 278 #ifdef NEW_LOGGING
 279                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 280                            "get_filter: conn %d  OR\n", conn->c_connid  ));
 281 #else
 282                 Debug( LDAP_DEBUG_FILTER, "OR\n", 0, 0, 0 );
 283 #endif
 284                 err = get_filter_list( conn, ber, &f->f_and, &ftmp, text );
 285                 if ( err != LDAP_SUCCESS ) {
 286                         break;
 287                 }
 288                 fstr->bv_len = sizeof("(|)") - 1 + ftmp.bv_len;
 289                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 290                 sprintf( fstr->bv_val, "(|%s)",
 291                         ftmp.bv_len ? ftmp.bv_val : "" );
 292                 break;
 293
 294         case LDAP_FILTER_NOT:
 295 #ifdef NEW_LOGGING
 296                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 297                            "get_filter: conn %d  NOT\n", conn->c_connid ));
 298 #else
 299                 Debug( LDAP_DEBUG_FILTER, "NOT\n", 0, 0, 0 );
 300 #endif
 301                 (void) ber_skip_tag( ber, &len );
 302                 err = get_filter( conn, ber, &f->f_not, &ftmp, text );
 303                 if ( err != LDAP_SUCCESS ) {
 304                         break;
 305                 }
 306                 fstr->bv_len = sizeof("(!)") - 1 + ftmp.bv_len;
 307                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 308                 sprintf( fstr->bv_val, "(!%s)",
 309                         ftmp.bv_len ? ftmp.bv_val : "" );
 310                 break;
 311
 312         case LDAP_FILTER_EXT:
 313 #ifdef NEW_LOGGING
 314                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 315                            "get_filter: conn %d  EXTENSIBLE\n", conn->c_connid ));
 316 #else
 317                 Debug( LDAP_DEBUG_FILTER, "EXTENSIBLE\n", 0, 0, 0 );
 318 #endif
 319
 320                 err = get_mra( ber, &f->f_mra, text );
 321                 if ( err != LDAP_SUCCESS ) {
 322                         break;
 323                 }
 324
 325                 assert( f->f_mra != NULL );
 326
 327                 filter_escape_value( &f->f_mr_value, &escaped );
 328
 329                 fstr->bv_len = sizeof("(:dn::=)") - 1
 330                         + (f->f_mr_desc ? f->f_mr_desc->ad_cname.bv_len : 0)
 331                         + f->f_mr_rule_text.bv_len
 332                         + escaped.bv_len;
 333
 334                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 335                 sprintf( fstr->bv_val, "(%s%s%s%s:=%s)",
 336                          (f->f_mr_desc ? f->f_mr_desc->ad_cname.bv_val : ""),
 337                          (f->f_mr_dnattrs ? ":dn" : ""),
 338                          (f->f_mr_rule_text.bv_len ? ":" : ""),
 339                          (f->f_mr_rule_text.bv_len ? f->f_mr_rule_text.bv_val : ""),
 340                          escaped.bv_val );
 341
 342                 ber_memfree( escaped.bv_val );
 343                 break;
 344
 345         default:
 346                 (void) ber_scanf( ber, "x" ); /* skip the element */
 347 #ifdef NEW_LOGGING
 348                 LDAP_LOG(( "filter", LDAP_LEVEL_ERR,
 349                            "get_filter: conn %d unknown filter type=%lu\n",
 350                            conn->c_connid, f->f_choice ));
 351 #else
 352                 Debug( LDAP_DEBUG_ANY, "get_filter: unknown filter type=%lu\n",
 353                        f->f_choice, 0, 0 );
 354 #endif
 355                 f->f_choice = SLAPD_FILTER_COMPUTED;
 356                 f->f_result = SLAPD_COMPARE_UNDEFINED;
 357                 ber_str2bv( "(undefined)", sizeof("(undefined)") - 1,
 358                         1, fstr );
 359                 break;
 360         }
 361
 362         if ( ftmp.bv_val ) free( ftmp.bv_val );
 363
 364         if ( err != LDAP_SUCCESS ) {
 365                 if ( fstr->bv_val != NULL ) {
 366                         free( fstr->bv_val );
 367                 }
 368
 369                 if( err != SLAPD_DISCONNECT ) {
 370                         /* ignore error */
 371                         f->f_choice = SLAPD_FILTER_COMPUTED;
 372                         f->f_result = SLAPD_COMPARE_UNDEFINED;
 373                         ber_str2bv( "(badfilter)", sizeof("(badfilter)") - 1,
 374                                 1, fstr );
 375                         err = LDAP_SUCCESS;
 376                         *filt = f;
 377
 378                 } else {
 379                         free(f);
 380                 }
 381         } else {
 382                 *filt = f;
 383         }
 384
 385 #ifdef NEW_LOGGING
 386         LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL2,
 387                 "get_filter: conn %d exit\n", conn->c_connid ));
 388 #else
 389         Debug( LDAP_DEBUG_FILTER, "end get_filter %d\n", err, 0, 0 );
 390 #endif
 391         return( err );
 392 }
 393
 394 static int
 395 get_filter_list( Connection *conn, BerElement *ber,
 396         Filter **f, struct berval *fstr,
 397         const char **text )
 398 {
 399         Filter          **new;
 400         int             err;
 401         ber_tag_t       tag;
 402         ber_len_t       len;
 403         char            *last;
 404         struct berval   ftmp;
 405
 406 #ifdef NEW_LOGGING
 407         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 408                    "get_filter_list: conn %d start\n", conn->c_connid ));
 409 #else
 410         Debug( LDAP_DEBUG_FILTER, "begin get_filter_list\n", 0, 0, 0 );
 411 #endif
 412         new = f;
 413         for ( tag = ber_first_element( ber, &len, &last ); tag != LBER_DEFAULT;
 414             tag = ber_next_element( ber, &len, last ) )
 415         {
 416                 err = get_filter( conn, ber, new, &ftmp, text );
 417                 if ( err != LDAP_SUCCESS )
 418                         return( err );
 419
 420                 if ( !fstr->bv_len ) {
 421                         *fstr = ftmp;
 422                 } else {
 423                         int i = fstr->bv_len;
 424                         fstr->bv_len += ftmp.bv_len;
 425                         fstr->bv_val = ch_realloc( fstr->bv_val,
 426                                 fstr->bv_len + 1 );
 427                         strcpy( fstr->bv_val+i, ftmp.bv_val );
 428                         free( ftmp.bv_val );
 429                 }
 430                 new = &(*new)->f_next;
 431         }
 432         *new = NULL;
 433
 434 #ifdef NEW_LOGGING
 435         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 436                    "get_filter_list: conn %d exit\n", conn->c_connid ));
 437 #else
 438         Debug( LDAP_DEBUG_FILTER, "end get_filter_list\n", 0, 0, 0 );
 439 #endif
 440         return( LDAP_SUCCESS );
 441 }
 442
 443 static int
 444 get_substring_filter(
 445     Connection  *conn,
 446     BerElement  *ber,
 447     Filter      *f,
 448     struct berval       *fstr,
 449         const char      **text
 450 )
 451 {
 452         ber_tag_t       tag;
 453         ber_len_t       len;
 454         ber_tag_t       rc;
 455         struct berval value;
 456         struct berval escaped;
 457         char            *last;
 458         struct berval bv;
 459         *text = "error decoding filter";
 460
 461 #ifdef NEW_LOGGING
 462         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 463                    "get_substring_filter: conn %d  begin\n", conn->c_connid ));
 464 #else
 465         Debug( LDAP_DEBUG_FILTER, "begin get_substring_filter\n", 0, 0, 0 );
 466 #endif
 467         if ( ber_scanf( ber, "{m" /*}*/, &bv ) == LBER_ERROR ) {
 468                 return SLAPD_DISCONNECT;
 469         }
 470
 471         f->f_sub = ch_calloc( 1, sizeof(SubstringsAssertion) );
 472         f->f_sub_desc = NULL;
 473         rc = slap_bv2ad( &bv, &f->f_sub_desc, text );
 474
 475         if( rc != LDAP_SUCCESS ) {
 476                 text = NULL;
 477                 ch_free( f->f_sub );
 478                 f->f_choice = SLAPD_FILTER_COMPUTED;
 479                 f->f_result = SLAPD_COMPARE_UNDEFINED;
 480                 ber_str2bv( "(undefined)", sizeof("(undefined)")-1, 1, fstr );
 481                 return LDAP_SUCCESS;
 482         }
 483
 484         f->f_sub_initial.bv_val = NULL;
 485         f->f_sub_any = NULL;
 486         f->f_sub_final.bv_val = NULL;
 487
 488         fstr->bv_len = sizeof("(=" /*)*/) - 1 +
 489                 f->f_sub_desc->ad_cname.bv_len;
 490         fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 491         sprintf( fstr->bv_val, "(%s=" /*)*/, f->f_sub_desc->ad_cname.bv_val );
 492
 493         for ( tag = ber_first_element( ber, &len, &last ); tag != LBER_DEFAULT;
 494             tag = ber_next_element( ber, &len, last ) )
 495         {
 496                 unsigned usage;
 497
 498                 rc = ber_scanf( ber, "m", &value );
 499                 if ( rc == LBER_ERROR ) {
 500                         rc = SLAPD_DISCONNECT;
 501                         goto return_error;
 502                 }
 503
 504                 if ( value.bv_val == NULL || value.bv_len == 0 ) {
 505                         rc = LDAP_INVALID_SYNTAX;
 506                         goto return_error;
 507                 }
 508
 509                 switch ( tag ) {
 510                 case LDAP_SUBSTRING_INITIAL:
 511                         usage = SLAP_MR_SUBSTR_INITIAL;
 512                         break;
 513
 514                 case LDAP_SUBSTRING_ANY:
 515                         usage = SLAP_MR_SUBSTR_ANY;
 516                         break;
 517
 518                 case LDAP_SUBSTRING_FINAL:
 519                         usage = SLAP_MR_SUBSTR_FINAL;
 520                         break;
 521
 522                 default:
 523                         rc = LDAP_PROTOCOL_ERROR;
 524
 525 #ifdef NEW_LOGGING
 526                         LDAP_LOG(( "filter", LDAP_LEVEL_ERR,
 527                                    "get_filter_substring: conn %d  unknown substring choice=%ld\n",
 528                                    conn->c_connid, (long)tag ));
 529 #else
 530                         Debug( LDAP_DEBUG_FILTER,
 531                                 "  unknown substring choice=%ld\n",
 532                                 (long) tag, 0, 0 );
 533 #endif
 534                         goto return_error;
 535                 }
 536
 537                 rc = value_normalize( f->f_sub_desc, usage, &value, &bv, text );
 538
 539                 if( rc != LDAP_SUCCESS ) {
 540                         goto return_error;
 541                 }
 542
 543                 value = bv;
 544
 545                 rc = LDAP_PROTOCOL_ERROR;
 546
 547                 switch ( tag ) {
 548                 case LDAP_SUBSTRING_INITIAL:
 549 #ifdef NEW_LOGGING
 550                         LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 551                                    "get_substring_filter: conn %d  INITIAL\n",
 552                                    conn->c_connid ));
 553 #else
 554                         Debug( LDAP_DEBUG_FILTER, "  INITIAL\n", 0, 0, 0 );
 555 #endif
 556
 557                         if ( f->f_sub_initial.bv_val != NULL
 558                                 || f->f_sub_any != NULL
 559                                 || f->f_sub_final.bv_val != NULL )
 560                         {
 561                                 free( value.bv_val );
 562                                 goto return_error;
 563                         }
 564
 565                         f->f_sub_initial = value;
 566
 567                         if( fstr->bv_val ) {
 568                                 int i = fstr->bv_len;
 569                                 filter_escape_value( &value, &escaped );
 570                                 fstr->bv_len += escaped.bv_len;
 571                                 fstr->bv_val = ch_realloc( fstr->bv_val,
 572                                         fstr->bv_len + 1 );
 573                                 strcpy( fstr->bv_val+i, escaped.bv_val );
 574                                 ber_memfree( escaped.bv_val );
 575                         }
 576                         break;
 577
 578                 case LDAP_SUBSTRING_ANY:
 579 #ifdef NEW_LOGGING
 580                         LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 581                                    "get_substring_filter: conn %d  ANY\n",
 582                                    conn->c_connid ));
 583 #else
 584                         Debug( LDAP_DEBUG_FILTER, "  ANY\n", 0, 0, 0 );
 585 #endif
 586
 587                         if ( f->f_sub_final.bv_val != NULL ) {
 588                                 free( value.bv_val );
 589                                 goto return_error;
 590                         }
 591
 592                         bvarray_add( &f->f_sub_any, &value );
 593
 594                         if( fstr->bv_val ) {
 595                                 int i = fstr->bv_len;
 596                                 filter_escape_value( &value, &escaped );
 597                                 fstr->bv_len += escaped.bv_len + 2;
 598                                 fstr->bv_val = ch_realloc( fstr->bv_val,
 599                                         fstr->bv_len + 1 );
 600                                 strcpy( fstr->bv_val+i, "*" );
 601                                 strcpy( fstr->bv_val+i+1, escaped.bv_val );
 602                                 ber_memfree( escaped.bv_val );
 603                         }
 604                         break;
 605
 606                 case LDAP_SUBSTRING_FINAL:
 607 #ifdef NEW_LOGGING
 608                         LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 609                                    "get_substring_filter: conn %d  FINAL\n",
 610                                    conn->c_connid ));
 611 #else
 612                         Debug( LDAP_DEBUG_FILTER, "  FINAL\n", 0, 0, 0 );
 613 #endif
 614
 615                         if ( f->f_sub_final.bv_val != NULL ) {
 616                                 free( value.bv_val );
 617                                 goto return_error;
 618                         }
 619
 620                         f->f_sub_final = value;
 621
 622                         if( fstr->bv_val ) {
 623                                 int i = fstr->bv_len;
 624                                 filter_escape_value( &value, &escaped );
 625                                 fstr->bv_len += escaped.bv_len + 2;
 626                                 fstr->bv_val = ch_realloc( fstr->bv_val,
 627                                         fstr->bv_len + 1 );
 628                                 strcpy( fstr->bv_val+i, "*" );
 629                                 strcpy( fstr->bv_val+i+1, escaped.bv_val );
 630                                 ber_memfree( escaped.bv_val );
 631                         }
 632                         break;
 633
 634                 default:
 635 #ifdef NEW_LOGGING
 636                         LDAP_LOG(( "filter", LDAP_LEVEL_INFO,
 637                                    "get_substring_filter: conn %d  unknown substring type %ld\n",
 638                                    conn->c_connid, (long)tag ));
 639 #else
 640                         Debug( LDAP_DEBUG_FILTER,
 641                                 "  unknown substring type=%ld\n",
 642                                 (long) tag, 0, 0 );
 643 #endif
 644
 645                         free( value.bv_val );
 646
 647 return_error:
 648 #ifdef NEW_LOGGING
 649                         LDAP_LOG(( "filter", LDAP_LEVEL_INFO,
 650                                    "get_substring_filter: conn %d  error %ld\n",
 651                                    conn->c_connid, (long)rc ));
 652 #else
 653                         Debug( LDAP_DEBUG_FILTER, "  error=%ld\n",
 654                                 (long) rc, 0, 0 );
 655 #endif
 656                         if( fstr->bv_val ) {
 657                                 free( fstr->bv_val );
 658                                 fstr->bv_val = NULL;
 659                                 fstr->bv_len = 0;
 660                         }
 661
 662                         free( f->f_sub_initial.bv_val );
 663                         bvarray_free( f->f_sub_any );
 664                         free( f->f_sub_final.bv_val );
 665                         ch_free( f->f_sub );
 666                         return rc;
 667                 }
 668         }
 669
 670         if( fstr->bv_val ) {
 671                 int i = fstr->bv_len;
 672                 fstr->bv_len += 3;
 673                 fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 3 );
 674                 if ( f->f_sub_final.bv_val == NULL ) {
 675                         strcpy( fstr->bv_val+i, "*" );
 676                         i++;
 677                 }
 678                 strcpy( fstr->bv_val+i, /*(*/ ")" );
 679         }
 680
 681 #ifdef NEW_LOGGING
 682         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 683                    "get_substring_filter: conn %d exit\n", conn->c_connid ));
 684 #else
 685         Debug( LDAP_DEBUG_FILTER, "end get_substring_filter\n", 0, 0, 0 );
 686 #endif
 687         return( LDAP_SUCCESS );
 688 }
 689
 690 void
 691 filter_free( Filter *f )
 692 {
 693         Filter  *p, *next;
 694
 695         if ( f == NULL ) {
 696                 return;
 697         }
 698
 699         switch ( f->f_choice ) {
 700         case LDAP_FILTER_PRESENT:
 701                 break;
 702
 703         case LDAP_FILTER_EQUALITY:
 704         case LDAP_FILTER_GE:
 705         case LDAP_FILTER_LE:
 706         case LDAP_FILTER_APPROX:
 707                 ava_free( f->f_ava, 1 );
 708                 break;
 709
 710         case LDAP_FILTER_SUBSTRINGS:
 711                 if ( f->f_sub_initial.bv_val != NULL ) {
 712                         free( f->f_sub_initial.bv_val );
 713                 }
 714                 bvarray_free( f->f_sub_any );
 715                 if ( f->f_sub_final.bv_val != NULL ) {
 716                         free( f->f_sub_final.bv_val );
 717                 }
 718                 ch_free( f->f_sub );
 719                 break;
 720
 721         case LDAP_FILTER_AND:
 722         case LDAP_FILTER_OR:
 723         case LDAP_FILTER_NOT:
 724                 for ( p = f->f_list; p != NULL; p = next ) {
 725                         next = p->f_next;
 726                         filter_free( p );
 727                 }
 728                 break;
 729
 730         case LDAP_FILTER_EXT:
 731                 mra_free( f->f_mra, 1 );
 732                 break;
 733
 734         case SLAPD_FILTER_COMPUTED:
 735                 break;
 736
 737         default:
 738 #ifdef NEW_LOGGING
 739                 LDAP_LOG(( "filter", LDAP_LEVEL_ERR,
 740                            "filter_free: unknown filter type %lu\n", f->f_choice ));
 741 #else
 742                 Debug( LDAP_DEBUG_ANY, "filter_free: unknown filter type=%lu\n",
 743                        f->f_choice, 0, 0 );
 744 #endif
 745                 break;
 746         }
 747
 748         free( f );
 749 }
 750
 751 #ifdef LDAP_DEBUG
 752 void
 753 filter_print( Filter *f )
 754 {
 755         int     i;
 756         Filter  *p;
 757         struct berval escaped;
 758
 759         if ( f == NULL ) {
 760                 fprintf( stderr, "No filter!" );
 761         }
 762
 763         switch ( f->f_choice ) {
 764         case LDAP_FILTER_EQUALITY:
 765                 filter_escape_value( &f->f_av_value, &escaped );
 766                 fprintf( stderr, "(%s=%s)",
 767                         f->f_av_desc->ad_cname.bv_val,
 768                     escaped.bv_val );
 769                 ber_memfree( escaped.bv_val );
 770                 break;
 771
 772         case LDAP_FILTER_GE:
 773                 filter_escape_value( &f->f_av_value, &escaped );
 774                 fprintf( stderr, "(%s>=%s)",
 775                         f->f_av_desc->ad_cname.bv_val,
 776                     escaped.bv_val );
 777                 ber_memfree( escaped.bv_val );
 778                 break;
 779
 780         case LDAP_FILTER_LE:
 781                 filter_escape_value( &f->f_av_value, &escaped );
 782                 fprintf( stderr, "(%s<=%s)",
 783                         f->f_ava->aa_desc->ad_cname.bv_val,
 784                     escaped.bv_val );
 785                 ber_memfree( escaped.bv_val );
 786                 break;
 787
 788         case LDAP_FILTER_APPROX:
 789                 filter_escape_value( &f->f_av_value, &escaped );
 790                 fprintf( stderr, "(%s~=%s)",
 791                         f->f_ava->aa_desc->ad_cname.bv_val,
 792                     escaped.bv_val );
 793                 ber_memfree( escaped.bv_val );
 794                 break;
 795
 796         case LDAP_FILTER_SUBSTRINGS:
 797                 fprintf( stderr, "(%s=" /*)*/,
 798                         f->f_sub_desc->ad_cname.bv_val );
 799                 if ( f->f_sub_initial.bv_val != NULL ) {
 800                         filter_escape_value( &f->f_sub_initial, &escaped );
 801                         fprintf( stderr, "%s",
 802                                 escaped.bv_val );
 803                         ber_memfree( escaped.bv_val );
 804                 }
 805                 if ( f->f_sub_any != NULL ) {
 806                         for ( i = 0; f->f_sub_any[i].bv_val != NULL; i++ ) {
 807                                 filter_escape_value( &f->f_sub_any[i], &escaped );
 808                                 fprintf( stderr, "*%s",
 809                                         escaped.bv_val );
 810                                 ber_memfree( escaped.bv_val );
 811                         }
 812                 }
 813                 if ( f->f_sub_final.bv_val != NULL ) {
 814                         filter_escape_value( &f->f_sub_final, &escaped );
 815                         fprintf( stderr,
 816                                 "*%s", escaped.bv_val );
 817                         ber_memfree( escaped.bv_val );
 818                 }
 819                 fprintf( stderr, /*(*/ ")" );
 820                 break;
 821
 822         case LDAP_FILTER_PRESENT:
 823                 fprintf( stderr, "(%s=*)",
 824                         f->f_desc->ad_cname.bv_val );
 825                 break;
 826
 827         case LDAP_FILTER_AND:
 828         case LDAP_FILTER_OR:
 829         case LDAP_FILTER_NOT:
 830                 fprintf( stderr, "(%c" /*)*/,
 831                         f->f_choice == LDAP_FILTER_AND ? '&' :
 832                     f->f_choice == LDAP_FILTER_OR ? '|' : '!' );
 833                 for ( p = f->f_list; p != NULL; p = p->f_next ) {
 834                         filter_print( p );
 835                 }
 836                 fprintf( stderr, /*(*/ ")" );
 837                 break;
 838
 839         case SLAPD_FILTER_COMPUTED:
 840                 fprintf( stderr, "(?=%s)",
 841                         f->f_result == LDAP_COMPARE_FALSE ? "false" :
 842                         f->f_result == LDAP_COMPARE_TRUE ? "true" :
 843                         f->f_result == SLAPD_COMPARE_UNDEFINED ? "undefined" :
 844                         "error" );
 845                 break;
 846
 847         default:
 848                 fprintf( stderr, "(unknown-filter=%lu)", f->f_choice );
 849                 break;
 850         }
 851 }
 852
 853 #endif /* ldap_debug */
 854
 855 static int filter_escape_value(
 856         struct berval *in,
 857         struct berval *out )
 858 {
 859         ber_len_t i;
 860         assert( in );
 861         assert( out );
 862
 863         out->bv_val = (char *) ch_malloc( ( in->bv_len * 3 ) + 1 );
 864         out->bv_len = 0;
 865
 866         for( i=0; i < in->bv_len ; i++ ) {
 867                 if( FILTER_ESCAPE(in->bv_val[i]) ) {
 868                         out->bv_val[out->bv_len++] = SLAP_ESCAPE_CHAR;
 869                         out->bv_val[out->bv_len++] = SLAP_ESCAPE_HI( in->bv_val[i] );
 870                         out->bv_val[out->bv_len++] = SLAP_ESCAPE_LO( in->bv_val[i] );
 871                 } else {
 872                         out->bv_val[out->bv_len++] = in->bv_val[i];
 873                 }
 874         }
 875
 876         out->bv_val[out->bv_len] = '\0';
 877         return LDAP_SUCCESS;
 878 }