git.sur5r.net Git - openldap/blob - servers/slapd/back-sql/search.c

   1 /*
   2  *       Copyright 1999, Dmitry Kovalev <mit@openldap.org>, All rights reserved.
   3  *
   4  *       Redistribution and use in source and binary forms are permitted only
   5  *       as authorized by the OpenLDAP Public License.  A copy of this
   6  *       license is available at http://www.OpenLDAP.org/license.html or
   7  *       in file LICENSE in the top-level directory of the distribution.
   8  */
   9
  10 #include "portable.h"
  11
  12 #ifdef SLAPD_SQL
  13
  14 #include <stdio.h>
  15 #include <sys/types.h>
  16 #include "ac/string.h"
  17 #include "slap.h"
  18 #include "lber_pvt.h"
  19 #include "ldap_pvt.h"
  20 #include "back-sql.h"
  21 #include "sql-wrap.h"
  22 #include "schema-map.h"
  23 #include "entry-id.h"
  24 #include "util.h"
  25
  26 #define BACKSQL_STOP            0
  27 #define BACKSQL_CONTINUE        1
  28
  29 static int backsql_process_filter( backsql_srch_info *bsi, Filter *f );
  30
  31 static int
  32 backsql_attrlist_add( backsql_srch_info *bsi, AttributeDescription *ad )
  33 {
  34         int             n_attrs = 0;
  35         AttributeName   *an = NULL;
  36
  37         if ( bsi->attrs == NULL ) {
  38                 return 1;
  39         }
  40
  41         /*
  42          * clear the list (retrieve all attrs)
  43          */
  44         if ( ad == NULL ) {
  45                 ch_free( bsi->attrs );
  46                 bsi->attrs = NULL;
  47                 return 1;
  48         }
  49
  50         for ( ; bsi->attrs[ n_attrs ].an_name.bv_val; n_attrs++ ) {
  51                 an = &bsi->attrs[ n_attrs ];
  52
  53                 Debug( LDAP_DEBUG_TRACE, "==>backsql_attrlist_add(): "
  54                         "attribute '%s' is in list\n",
  55                         an->an_name.bv_val, 0, 0 );
  56                 /*
  57                  * We can live with strcmp because the attribute
  58                  * list has been normalized before calling be_search
  59                  */
  60                 if ( !BACKSQL_NCMP( &an->an_name, &ad->ad_cname ) ) {
  61                         return 1;
  62                 }
  63         }
  64
  65         Debug( LDAP_DEBUG_TRACE, "==>backsql_attrlist_add(): "
  66                 "adding '%s' to list\n", ad->ad_cname.bv_val, 0, 0 );
  67
  68         an = (AttributeName *)ch_realloc( bsi->attrs,
  69                         sizeof( AttributeName ) * ( n_attrs + 2 ) );
  70         if ( an == NULL ) {
  71                 return -1;
  72         }
  73
  74         an[ n_attrs ].an_name = ad->ad_cname;
  75         an[ n_attrs ].an_desc = ad;
  76         an[ n_attrs + 1 ].an_name.bv_val = NULL;
  77         an[ n_attrs + 1 ].an_name.bv_len = 0;
  78
  79         bsi->attrs = an;
  80
  81         return 1;
  82 }
  83
  84 void
  85 backsql_init_search(
  86         backsql_srch_info       *bsi,
  87         backsql_info            *bi,
  88         struct berval           *nbase,
  89         int                     scope,
  90         int                     slimit,
  91         int                     tlimit,
  92         time_t                  stoptime,
  93         Filter                  *filter,
  94         SQLHDBC                 dbh,
  95         BackendDB               *be,
  96         Connection              *conn,
  97         Operation               *op,
  98         AttributeName           *attrs )
  99 {
 100         AttributeName           *p;
 101
 102         bsi->base_dn = nbase;
 103         bsi->scope = scope;
 104         bsi->slimit = slimit;
 105         bsi->tlimit = tlimit;
 106         bsi->filter = filter;
 107         bsi->dbh = dbh;
 108         bsi->be = be;
 109         bsi->conn = conn;
 110         bsi->op = op;
 111         bsi->bsi_flags = 0;
 112
 113         /*
 114          * handle "*"
 115          */
 116         if ( attrs == NULL || an_find( attrs, &AllUser ) ) {
 117                 bsi->attrs = NULL;
 118
 119         } else {
 120                 bsi->attrs = (AttributeName *)ch_calloc( 1,
 121                                 sizeof( AttributeName ) );
 122                 bsi->attrs[ 0 ].an_name.bv_val = NULL;
 123                 bsi->attrs[ 0 ].an_name.bv_len = 0;
 124
 125                 for ( p = attrs; p->an_name.bv_val; p++ ) {
 126                         /*
 127                          * ignore "1.1"; handle "+"
 128                          */
 129                         if ( BACKSQL_NCMP( &p->an_name, &AllOper ) == 0 ) {
 130                                 bsi->bsi_flags |= BSQL_SF_ALL_OPER;
 131                                 continue;
 132
 133                         } else if ( BACKSQL_NCMP( &p->an_name, &NoAttrs ) == 0 ) {
 134                                 continue;
 135                         }
 136
 137                         backsql_attrlist_add( bsi, p->an_desc );
 138                 }
 139         }
 140
 141         bsi->abandon = 0;
 142         bsi->id_list = NULL;
 143         bsi->n_candidates = 0;
 144         bsi->stoptime = stoptime;
 145         bsi->bi = bi;
 146         bsi->sel.bv_val = NULL;
 147         bsi->sel.bv_len = 0;
 148         bsi->sel_len = 0;
 149         bsi->from.bv_val = NULL;
 150         bsi->from.bv_len = 0;
 151         bsi->from_len = 0;
 152         bsi->join_where.bv_val = NULL;
 153         bsi->join_where.bv_len = 0;
 154         bsi->jwhere_len = 0;
 155         bsi->flt_where.bv_val = NULL;
 156         bsi->flt_where.bv_len = 0;
 157         bsi->fwhere_len = 0;
 158
 159         bsi->status = LDAP_SUCCESS;
 160 }
 161
 162 static int
 163 backsql_process_filter_list( backsql_srch_info *bsi, Filter *f, int op )
 164 {
 165         int             res;
 166
 167         if ( !f ) {
 168                 return 0;
 169         }
 170
 171         backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len, "c", '(' /* ) */  );
 172
 173         while ( 1 ) {
 174                 res = backsql_process_filter( bsi, f );
 175                 if ( res < 0 ) {
 176                         /*
 177                          * TimesTen : If the query has no answers,
 178                          * don't bother to run the query.
 179                          */
 180                         return -1;
 181                 }
 182
 183                 f = f->f_next;
 184                 if ( f == NULL ) {
 185                         break;
 186                 }
 187
 188                 switch ( op ) {
 189                 case LDAP_FILTER_AND:
 190                         backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len, "l",
 191                                         (ber_len_t)sizeof( " AND " ) - 1,
 192                                                 " AND " );
 193                         break;
 194
 195                 case LDAP_FILTER_OR:
 196                         backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len, "l",
 197                                         (ber_len_t)sizeof( " OR " ) - 1,
 198                                                 " OR " );
 199                         break;
 200                 }
 201         }
 202
 203         backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len, "c", /* ( */ ')' );
 204
 205         return 1;
 206 }
 207
 208 static int
 209 backsql_process_sub_filter( backsql_srch_info *bsi, Filter *f )
 210 {
 211         int                     i;
 212         backsql_at_map_rec      *at;
 213
 214         if ( !f ) {
 215                 return 0;
 216         }
 217
 218         at = backsql_ad2at( bsi->oc, f->f_sub_desc );
 219
 220         assert( at );
 221
 222         /*
 223          * When dealing with case-sensitive strings
 224          * we may omit normalization; however, normalized
 225          * SQL filters are more liberal.
 226          */
 227
 228         backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len, "c", '(' /* ) */  );
 229
 230         /* TimesTen */
 231         Debug( LDAP_DEBUG_TRACE, "expr: '%s' '%s'\n", at->sel_expr.bv_val,
 232                 at->sel_expr_u.bv_val ? at->sel_expr_u.bv_val : "<NULL>", 0 );
 233         if ( bsi->bi->upper_func.bv_val ) {
 234                 /*
 235                  * If a pre-upper-cased version of the column exists, use it
 236                  */
 237                 if ( at->sel_expr_u.bv_val ) {
 238                         backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len,
 239                                         "bl",
 240                                         &at->sel_expr_u,
 241                                         (ber_len_t)sizeof( " LIKE '" ) - 1,
 242                                                 " LIKE '" );
 243                 } else {
 244                         backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len,
 245                                         "bcbcl",
 246                                         &bsi->bi->upper_func,
 247                                         '(',
 248                                         &at->sel_expr,
 249                                         ')',
 250                                         (ber_len_t)sizeof( " LIKE '" ) - 1,
 251                                                 " LIKE '" );
 252                 }
 253         } else {
 254                 backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len, "bl",
 255                                 &at->sel_expr,
 256                                 (ber_len_t)sizeof( " LIKE '" ) - 1, " LIKE '" );
 257         }
 258
 259         if ( f->f_sub_initial.bv_val != NULL ) {
 260                 size_t  start;
 261
 262                 start = bsi->flt_where.bv_len;
 263                 backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len, "b",
 264                                 &f->f_sub_initial );
 265                 if ( bsi->bi->upper_func.bv_val ) {
 266                         ldap_pvt_str2upper( &bsi->flt_where.bv_val[ start ] );
 267                 }
 268         }
 269
 270         backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len, "c", '%' );
 271
 272         if ( f->f_sub_any != NULL ) {
 273                 for ( i = 0; f->f_sub_any[ i ].bv_val != NULL; i++ ) {
 274                         size_t  start;
 275
 276 #ifdef BACKSQL_TRACE
 277                         Debug( LDAP_DEBUG_TRACE,
 278                                 "==>backsql_process_sub_filter(): "
 279                                 "sub_any='%s'\n", f->f_sub_any[ i ].bv_val,
 280                                 0, 0 );
 281 #endif /* BACKSQL_TRACE */
 282
 283                         start = bsi->flt_where.bv_len;
 284                         backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len,
 285                                         "bc",
 286                                         &f->f_sub_any[ i ],
 287                                         '%' );
 288                         if ( bsi->bi->upper_func.bv_val ) {
 289                                 /*
 290                                  * Note: toupper('%') = '%'
 291                                  */
 292                                 ldap_pvt_str2upper( &bsi->flt_where.bv_val[ start ] );
 293                         }
 294                 }
 295
 296                 if ( f->f_sub_final.bv_val != NULL ) {
 297                         size_t  start;
 298
 299                         start = bsi->flt_where.bv_len;
 300                         backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len, "b",
 301                                         &f->f_sub_final );
 302                         if ( bsi->bi->upper_func.bv_val ) {
 303                                 ldap_pvt_str2upper( &bsi->flt_where.bv_val[ start ] );
 304                         }
 305                 }
 306         }
 307
 308         backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len, "l",
 309                         (ber_len_t)sizeof( /* (' */ "')" ) - 1, /* ( */ "')" );
 310
 311         return 1;
 312 }
 313
 314 static int
 315 backsql_process_filter( backsql_srch_info *bsi, Filter *f )
 316 {
 317         backsql_at_map_rec      *at;
 318         backsql_at_map_rec      oc_attr = {
 319                 slap_schema.si_ad_objectClass, BER_BVC(""), BER_BVC(""),
 320                 BER_BVNULL, NULL, NULL, NULL };
 321         AttributeDescription    *ad = NULL;
 322         int                     done = 0;
 323         ber_len_t               len = 0;
 324         /* TimesTen */
 325         int                     rc = 0;
 326
 327         Debug( LDAP_DEBUG_TRACE, "==>backsql_process_filter()\n", 0, 0, 0 );
 328         if ( f == NULL || f->f_choice == SLAPD_FILTER_COMPUTED ) {
 329                 return 0;
 330         }
 331
 332         switch( f->f_choice ) {
 333         case LDAP_FILTER_OR:
 334                 rc = backsql_process_filter_list( bsi, f->f_or,
 335                                 LDAP_FILTER_OR );
 336                 done = 1;
 337                 break;
 338
 339         case LDAP_FILTER_AND:
 340                 rc = backsql_process_filter_list( bsi, f->f_and,
 341                                 LDAP_FILTER_AND );
 342                 done = 1;
 343                 break;
 344
 345         case LDAP_FILTER_NOT:
 346                 backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len, "l",
 347                                 (ber_len_t)sizeof( "NOT (" /* ) */ ) - 1,
 348                                         "NOT (" /* ) */ );
 349                 rc = backsql_process_filter( bsi, f->f_not );
 350                 backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len, "c",
 351                                 /* ( */ ')' );
 352                 done = 1;
 353                 break;
 354
 355         case LDAP_FILTER_PRESENT:
 356                 ad = f->f_desc;
 357                 break;
 358
 359         case LDAP_FILTER_EXT:
 360                 ad = f->f_mra->ma_desc;
 361                 break;
 362
 363         default:
 364                 ad = f->f_av_desc;
 365                 break;
 366         }
 367
 368         if ( rc == -1 ) {
 369                 /* TimesTen : Don't run the query */
 370                 goto impossible;
 371         }
 372
 373         if ( done ) {
 374                 goto done;
 375         }
 376
 377         /*
 378          * Turn structuralObjectClass into objectClass
 379          */
 380         if ( ad == slap_schema.si_ad_objectClass
 381                         || ad == slap_schema.si_ad_structuralObjectClass ) {
 382                 at = &oc_attr;
 383                 backsql_strfcat( &at->sel_expr, &len, "cbc",
 384                                 '\'',
 385                                 &bsi->oc->oc->soc_cname,
 386                                 '\'' );
 387
 388 #if defined(SLAP_X_FILTER_HASSUBORDINATES) || defined(SLAP_X_MRA_MATCH_DNATTRS)
 389         } else if ( ad == slap_schema.si_ad_hasSubordinates || ad == NULL ) {
 390                 /*
 391                  * FIXME: this is not robust; e.g. a filter
 392                  * '(!(hasSubordinates=TRUE))' fails because
 393                  * in SQL it would read 'NOT (1=1)' instead
 394                  * of no condition.
 395                  * Note however that hasSubordinates is boolean,
 396                  * so a more appropriate filter would be
 397                  * '(hasSubordinates=FALSE)'
 398                  */
 399                 backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len, "l",
 400                                 (ber_len_t)sizeof( "1=1" ) - 1, "1=1" );
 401                 if ( ad != NULL ) {
 402                         /*
 403                          * We use this flag since we need to parse
 404                          * the filter anyway; we should have used
 405                          * the frontend API function
 406                          * filter_has_subordinates()
 407                          */
 408                         bsi->bsi_flags |= BSQL_SF_FILTER_HASSUBORDINATE;
 409                 } else {
 410                         /*
 411                          * clear attributes to fetch, to require ALL
 412                          * and try extended match on all attributes
 413                          */
 414                         backsql_attrlist_add( bsi, NULL );
 415                 }
 416                 goto done;
 417 #endif /* SLAP_X_FILTER_HASSUBORDINATES || SLAP_X_MRA_MATCH_DNATTRS */
 418
 419         } else {
 420                 at = backsql_ad2at( bsi->oc, ad );
 421         }
 422
 423         if ( at == NULL ) {
 424                 Debug( LDAP_DEBUG_TRACE, "backsql_process_filter(): "
 425                         "attribute '%s' is not defined for objectclass '%s'\n",
 426                         ad->ad_cname.bv_val, BACKSQL_OC_NAME( bsi->oc ), 0 );
 427                 backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len, "l",
 428                                 (ber_len_t)sizeof( "1=0" ) - 1, "1=0" );
 429                 goto impossible;
 430         }
 431
 432         backsql_merge_from_clause( &bsi->from, &bsi->from_len,
 433                         &at->from_tbls );
 434         /*
 435          * need to add this attribute to list of attrs to load,
 436          * so that we could do test_filter() later
 437          */
 438         backsql_attrlist_add( bsi, ad );
 439
 440         if ( at->join_where.bv_val != NULL
 441                         && strstr( bsi->join_where.bv_val, at->join_where.bv_val ) == NULL ) {
 442                 backsql_strfcat( &bsi->join_where, &bsi->jwhere_len, "lb",
 443                                 (ber_len_t)sizeof( " AND " ) - 1, " AND ",
 444                                 &at->join_where );
 445         }
 446
 447 #if 0
 448         /*
 449          * FIXME: this is not required any more; however, note that
 450          * attribute name syntax might collide with SQL legal aliases
 451          */
 452         if ( at != &oc_attr ) {
 453                 backsql_strfcat( &bsi->sel, &bsi->sel_len, "cblb",
 454                                 ',',
 455                                 &at->sel_expr,
 456                                 (ber_len_t)sizeof( " AS " ) - 1, " AS ",
 457                                 &at->name );
 458         }
 459 #endif
 460
 461         switch ( f->f_choice ) {
 462         case LDAP_FILTER_EQUALITY:
 463                 /*
 464                  * maybe we should check type of at->sel_expr here somehow,
 465                  * to know whether upper_func is applicable, but for now
 466                  * upper_func stuff is made for Oracle, where UPPER is
 467                  * safely applicable to NUMBER etc.
 468                  */
 469                 if ( bsi->bi->upper_func.bv_val ) {
 470                         size_t  start;
 471
 472                         if ( at->sel_expr_u.bv_val ) {
 473                                 backsql_strfcat( &bsi->flt_where,
 474                                                 &bsi->fwhere_len, "cbl",
 475                                                 '(',
 476                                                 &at->sel_expr_u,
 477                                                 (ber_len_t)sizeof( "='" ) - 1,
 478                                                         "='" );
 479                         } else {
 480                                 backsql_strfcat( &bsi->flt_where,
 481                                                 &bsi->fwhere_len, "cbcbl",
 482                                                 '(' /* ) */ ,
 483                                                 &bsi->bi->upper_func,
 484                                                 '(' /* ) */ ,
 485                                                 &at->sel_expr,
 486                                                 (ber_len_t)sizeof( /* ( */ ")='" ) - 1,
 487                                                         /* ( */ ")='" );
 488                         }
 489
 490                         start = bsi->flt_where.bv_len;
 491
 492                         backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len,
 493                                         "bl",
 494                                         &f->f_av_value,
 495                                         (ber_len_t)sizeof( /* (' */ "')" ) - 1,
 496                                                 /* (' */ "')" );
 497
 498                         ldap_pvt_str2upper( &bsi->flt_where.bv_val[ start ] );
 499
 500                 } else {
 501                         backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len,
 502                                         "cblbl",
 503                                         '(',
 504                                         &at->sel_expr,
 505                                         (ber_len_t)sizeof( "='" ) - 1, "='",
 506                                         &f->f_av_value,
 507                                         (ber_len_t)sizeof( /* (' */ "')" ) - 1,
 508                                                 /* (' */ "')" );
 509                 }
 510                 break;
 511
 512         case LDAP_FILTER_GE:
 513                 /*
 514                  * FIXME: should we uppercase the operands?
 515                  */
 516                 backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len, "cblbc",
 517                                 '(' /* ) */ ,
 518                                 &at->sel_expr,
 519                                 (ber_len_t)sizeof( ">=" ) - 1, ">=",
 520                                 &f->f_av_value,
 521                                 /* ( */ ')' );
 522                 break;
 523
 524         case LDAP_FILTER_LE:
 525                 /*
 526                  * FIXME: should we uppercase the operands?
 527                  */
 528                 backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len, "cblbc",
 529                                 '(' /* ) */ ,
 530                                 &at->sel_expr,
 531                                 (ber_len_t)sizeof( "<=" ) - 1, "<=",
 532                                 &f->f_av_value,
 533                                 /* ( */ ')' );
 534                 break;
 535
 536         case LDAP_FILTER_PRESENT:
 537                 backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len, "lbl",
 538                                 (ber_len_t)sizeof( "NOT (" ) - 1, "NOT (",
 539                                 &at->sel_expr,
 540                                 (ber_len_t)sizeof( " IS NULL)" ) - 1, " IS NULL)" );
 541                 break;
 542
 543         case LDAP_FILTER_SUBSTRINGS:
 544                 backsql_process_sub_filter( bsi, f );
 545                 break;
 546         }
 547
 548 done:
 549         if ( oc_attr.sel_expr.bv_val != NULL ) {
 550                 free( oc_attr.sel_expr.bv_val );
 551         }
 552
 553         Debug( LDAP_DEBUG_TRACE, "<==backsql_process_filter()\n", 0, 0, 0 );
 554         return 1;
 555
 556 impossible:
 557         if ( oc_attr.sel_expr.bv_val != NULL ) {
 558                 free( oc_attr.sel_expr.bv_val );
 559         }
 560         Debug( LDAP_DEBUG_TRACE, "<==backsql_process_filter() returns -1\n",
 561                         0, 0, 0 );
 562         return -1;
 563 }
 564
 565 static int
 566 backsql_srch_query( backsql_srch_info *bsi, struct berval *query )
 567 {
 568         backsql_info    *bi = (backsql_info *)bsi->be->be_private;
 569         ber_len_t       q_len = 0;
 570         int             rc;
 571
 572         assert( query );
 573         query->bv_val = NULL;
 574         query->bv_len = 0;
 575
 576         Debug( LDAP_DEBUG_TRACE, "==>backsql_srch_query()\n", 0, 0, 0 );
 577         bsi->sel.bv_val = NULL;
 578         bsi->sel.bv_len = 0;
 579         bsi->sel_len = 0;
 580         bsi->from.bv_val = NULL;
 581         bsi->from.bv_len = 0;
 582         bsi->from_len = 0;
 583         bsi->join_where.bv_val = NULL;
 584         bsi->join_where.bv_len = 0;
 585         bsi->jwhere_len = 0;
 586         bsi->flt_where.bv_val = NULL;
 587         bsi->flt_where.bv_len = 0;
 588         bsi->fwhere_len = 0;
 589
 590 #if 0
 591         /*
 592          * FIXME: this query has been split in case a string cast function
 593          * is defined; more sophisticated (pattern based) function should
 594          * be used
 595          */
 596         backsql_strcat( &bsi->sel, &bsi->sel_len,
 597                         "SELECT DISTINCT ldap_entries.id,",
 598                         bsi->oc->keytbl.bv_val, ".", bsi->oc->keycol.bv_val,
 599                         ",'", bsi->oc->name.bv_val, "' AS objectClass",
 600                         ",ldap_entries.dn AS dn", NULL );
 601 #endif
 602
 603         backsql_strfcat( &bsi->sel, &bsi->sel_len, "lbcbc",
 604                         (ber_len_t)sizeof( "SELECT DISTINCT ldap_entries.id," ) - 1,
 605                                 "SELECT DISTINCT ldap_entries.id,",
 606                         &bsi->oc->keytbl,
 607                         '.',
 608                         &bsi->oc->keycol,
 609                         ',' );
 610
 611         if ( bi->strcast_func.bv_val ) {
 612                 backsql_strfcat( &bsi->sel, &bsi->sel_len, "blbl",
 613                                 &bi->strcast_func,
 614                                 (ber_len_t)sizeof( "('" /* ') */ ) - 1,
 615                                         "('" /* ') */ ,
 616                                 &bsi->oc->oc->soc_cname,
 617                                 (ber_len_t)sizeof( /* (' */ "')" ) - 1,
 618                                         /* (' */ "')" );
 619         } else {
 620                 backsql_strfcat( &bsi->sel, &bsi->sel_len, "cbc",
 621                                 '\'',
 622                                 &bsi->oc->oc->soc_cname,
 623                                 '\'' );
 624         }
 625         backsql_strfcat( &bsi->sel, &bsi->sel_len, "l",
 626                         (ber_len_t)sizeof( " AS objectClass,ldap_entries.dn AS dn" ) - 1,
 627                         " AS objectClass,ldap_entries.dn AS dn" );
 628
 629         backsql_strfcat( &bsi->from, &bsi->from_len, "lb",
 630                         (ber_len_t)sizeof( " FROM ldap_entries," ) - 1,
 631                                 " FROM ldap_entries,",
 632                         &bsi->oc->keytbl );
 633
 634         backsql_strfcat( &bsi->join_where, &bsi->jwhere_len, "lbcbl",
 635                         (ber_len_t)sizeof( " WHERE " ) - 1, " WHERE ",
 636                         &bsi->oc->keytbl,
 637                         '.',
 638                         &bsi->oc->keycol,
 639                         (ber_len_t)sizeof( "=ldap_entries.keyval AND ldap_entries.oc_map_id=? AND " ) - 1,
 640                                 "=ldap_entries.keyval AND ldap_entries.oc_map_id=? AND " );
 641
 642         switch ( bsi->scope ) {
 643         case LDAP_SCOPE_BASE:
 644                 if ( bsi->bi->upper_func.bv_val ) {
 645                         backsql_strfcat( &bsi->join_where, &bsi->jwhere_len,
 646                                         "blbcb",
 647                                         &bsi->bi->upper_func,
 648                                         (ber_len_t)sizeof( "(ldap_entries.dn)=" ) - 1,
 649                                                 "(ldap_entries.dn)=",
 650                                         &bsi->bi->upper_func_open,
 651                                         '?',
 652                                         &bsi->bi->upper_func_close );
 653                 } else {
 654                         backsql_strfcat( &bsi->join_where, &bsi->jwhere_len,
 655                                         "l",
 656                                         (ber_len_t)sizeof( "ldap_entries.dn=?" ) - 1,
 657                                                 "ldap_entries.dn=?" );
 658                 }
 659                 break;
 660
 661         case LDAP_SCOPE_ONELEVEL:
 662                 backsql_strfcat( &bsi->join_where, &bsi->jwhere_len, "l",
 663                                 (ber_len_t)sizeof( "ldap_entries.parent=?" ) - 1,
 664                                         "ldap_entries.parent=?" );
 665                 break;
 666
 667         case LDAP_SCOPE_SUBTREE:
 668                 backsql_strfcat( &bsi->join_where, &bsi->jwhere_len, "b",
 669                                 &bsi->bi->subtree_cond );
 670                 break;
 671
 672         default:
 673                 assert( 0 );
 674         }
 675
 676         rc = backsql_process_filter( bsi, bsi->filter );
 677         if ( rc > 0 ) {
 678                 backsql_strfcat( query, &q_len, "bbblb",
 679                                 &bsi->sel,
 680                                 &bsi->from,
 681                                 &bsi->join_where,
 682                                 (ber_len_t)sizeof( " AND " ) - 1, " AND ",
 683                                 &bsi->flt_where );
 684
 685         } else if ( rc < 0 ) {
 686                 /*
 687                  * Indicates that there's no possible way the filter matches
 688                  * anything.  No need to issue the query
 689                  */
 690                 Debug( LDAP_DEBUG_TRACE,
 691                         "<==backsql_srch_query() returns NULL\n", 0, 0, 0 );
 692                 free( query->bv_val );
 693                 query->bv_val = NULL;
 694         }
 695
 696         free( bsi->sel.bv_val );
 697         bsi->sel.bv_len = 0;
 698         bsi->sel_len = 0;
 699         free( bsi->from.bv_val );
 700         bsi->from.bv_len = 0;
 701         bsi->from_len = 0;
 702         free( bsi->join_where.bv_val );
 703         bsi->join_where.bv_len = 0;
 704         bsi->jwhere_len = 0;
 705         free( bsi->flt_where.bv_val );
 706         bsi->flt_where.bv_len = 0;
 707         bsi->fwhere_len = 0;
 708
 709         Debug( LDAP_DEBUG_TRACE, "<==backsql_srch_query()\n", 0, 0, 0 );
 710
 711         return ( query->bv_val == NULL ? 1 : 0 );
 712 }
 713
 714 int
 715 backsql_oc_get_candidates( backsql_oc_map_rec *oc, backsql_srch_info *bsi )
 716 {
 717         struct berval           query;
 718         SQLHSTMT                sth;
 719         RETCODE                 rc;
 720         backsql_entryID         base_id, *c_id;
 721         int                     res;
 722         BACKSQL_ROW_NTS         row;
 723         int                     i;
 724         int                     j;
 725
 726         Debug(  LDAP_DEBUG_TRACE, "==>backsql_oc_get_candidates(): oc='%s'\n",
 727                         BACKSQL_OC_NAME( oc ), 0, 0 );
 728
 729         if ( bsi->n_candidates == -1 ) {
 730                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 731                         "unchecked limit has been overcome\n", 0, 0, 0 );
 732                 /* should never get here */
 733                 assert( 0 );
 734                 return BACKSQL_STOP;
 735         }
 736
 737         bsi->oc = oc;
 738         if ( backsql_srch_query( bsi, &query ) ) {
 739                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 740                         "could not construct query for objectclass\n",
 741                         0, 0, 0 );
 742                 return BACKSQL_CONTINUE;
 743         }
 744
 745         Debug( LDAP_DEBUG_TRACE, "Constructed query: %s\n",
 746                         query.bv_val, 0, 0 );
 747
 748         rc = backsql_Prepare( bsi->dbh, &sth, query.bv_val, 0 );
 749         free( query.bv_val );
 750         if ( rc != SQL_SUCCESS ) {
 751                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 752                         "error preparing query\n", 0, 0, 0 );
 753                 backsql_PrintErrors( bsi->bi->db_env, bsi->dbh, sth, rc );
 754                 return BACKSQL_CONTINUE;
 755         }
 756
 757         if ( backsql_BindParamID( sth, 1, &bsi->oc->id ) != SQL_SUCCESS ) {
 758                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 759                         "error binding objectclass id parameter\n", 0, 0, 0 );
 760                 return BACKSQL_CONTINUE;
 761         }
 762
 763         switch ( bsi->scope ) {
 764         case LDAP_SCOPE_BASE:
 765                 rc = backsql_BindParamStr( sth, 2, bsi->base_dn->bv_val,
 766                                 BACKSQL_MAX_DN_LEN );
 767                 if ( rc != SQL_SUCCESS ) {
 768                         Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 769                                 "error binding base_dn parameter\n", 0, 0, 0 );
 770                         backsql_PrintErrors( bsi->bi->db_env, bsi->dbh,
 771                                         sth, rc );
 772                         return BACKSQL_CONTINUE;
 773                 }
 774                 break;
 775
 776         case LDAP_SCOPE_SUBTREE: {
 777
 778                 /*
 779                  * + 1 because we need room for '%'; this makes a subtree
 780                  * search for a DN BACKSQL_MAX_DN_LEN long legal
 781                  * if it returns that DN only
 782                  */
 783                 char            temp_base_dn[ BACKSQL_MAX_DN_LEN + 1 + 1 ];
 784
 785                 /*
 786                  * We do not accept DNs longer than BACKSQL_MAX_DN_LEN;
 787                  * however this should be handled earlier
 788                  */
 789                 assert( bsi->base_dn->bv_len <= BACKSQL_MAX_DN_LEN );
 790
 791                 /*
 792                  * Sets the parameters for the SQL built earlier
 793                  * NOTE that all the databases could actually use
 794                  * the TimesTen version, which would be cleaner
 795                  * and would also eliminate the need for the
 796                  * subtree_cond line in the configuration file.
 797                  * For now, I'm leaving it the way it is,
 798                  * so non-TimesTen databases use the original code.
 799                  * But at some point this should get cleaned up.
 800                  *
 801                  * If "dn" is being used, do a suffix search.
 802                  * If "dn_ru" is being used, do a prefix search.
 803                  */
 804                 if ( BACKSQL_HAS_LDAPINFO_DN_RU( bsi->bi ) ) {
 805                         temp_base_dn[ 0 ] = '\0';
 806                         for ( i = 0, j = bsi->base_dn->bv_len - 1;
 807                                         j >= 0; i++, j--) {
 808                                 temp_base_dn[ i ] = bsi->base_dn->bv_val[ j ];
 809                         }
 810                         temp_base_dn[ i ] = '%';
 811                         temp_base_dn[ i + 1 ] = '\0';
 812                         ldap_pvt_str2upper( temp_base_dn );
 813
 814                 } else {
 815                         temp_base_dn[ 0 ] = '%';
 816                         AC_MEMCPY( &temp_base_dn[ 1 ], bsi->base_dn->bv_val,
 817                                 bsi->base_dn->bv_len + 1 );
 818                         ldap_pvt_str2upper( &temp_base_dn[ 1 ] );
 819                 }
 820
 821                 Debug( LDAP_DEBUG_TRACE, "dn '%s'\n", temp_base_dn, 0, 0 );
 822
 823                 rc = backsql_BindParamStr( sth, 2, temp_base_dn,
 824                                 BACKSQL_MAX_DN_LEN );
 825                 if ( rc != SQL_SUCCESS ) {
 826                         Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 827                                 "error binding base_dn parameter (2)\n",
 828                                 0, 0, 0 );
 829                         backsql_PrintErrors( bsi->bi->db_env, bsi->dbh,
 830                                         sth, rc );
 831                         return BACKSQL_CONTINUE;
 832                 }
 833                 break;
 834         }
 835
 836         case LDAP_SCOPE_ONELEVEL:
 837                 res = backsql_dn2id( bsi->bi, &base_id,
 838                                 bsi->dbh, bsi->base_dn );
 839                 if ( res != LDAP_SUCCESS ) {
 840                         Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 841                                 "could not retrieve base_dn id%s\n",
 842                                 res == LDAP_NO_SUCH_OBJECT ? ": no such entry"
 843                                 : "", 0, 0 );
 844                         bsi->status = res;
 845                         return BACKSQL_CONTINUE;
 846                 }
 847
 848                 rc = backsql_BindParamID( sth, 2, &base_id.id );
 849                 backsql_free_entryID( &base_id, 0 );
 850                 if ( rc != SQL_SUCCESS ) {
 851                         Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 852                                 "error binding base id parameter\n", 0, 0, 0 );
 853                         return BACKSQL_CONTINUE;
 854                 }
 855                 break;
 856         }
 857
 858         rc = SQLExecute( sth );
 859         if ( !BACKSQL_SUCCESS( rc ) ) {
 860                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 861                         "error executing query\n", 0, 0, 0 );
 862                 backsql_PrintErrors( bsi->bi->db_env, bsi->dbh, sth, rc );
 863                 SQLFreeStmt( sth, SQL_DROP );
 864                 return BACKSQL_CONTINUE;
 865         }
 866
 867         backsql_BindRowAsStrings( sth, &row );
 868         rc = SQLFetch( sth );
 869         for ( ; BACKSQL_SUCCESS( rc ); rc = SQLFetch( sth ) ) {
 870                 c_id = (backsql_entryID *)ch_calloc( 1,
 871                                 sizeof( backsql_entryID ) );
 872                 c_id->id = strtol( row.cols[ 0 ], NULL, 0 );
 873                 c_id->keyval = strtol( row.cols[ 1 ], NULL, 0 );
 874                 c_id->oc_id = bsi->oc->id;
 875                 ber_str2bv( row.cols[ 3 ], 0, 1, &c_id->dn );
 876                 c_id->next = bsi->id_list;
 877                 bsi->id_list = c_id;
 878                 bsi->n_candidates--;
 879
 880                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 881                         "added entry id=%ld, keyval=%ld dn='%s'\n",
 882                         c_id->id, c_id->keyval, row.cols[ 3 ] );
 883
 884                 if ( bsi->n_candidates == -1 ) {
 885                         break;
 886                 }
 887         }
 888         backsql_FreeRow( &row );
 889         SQLFreeStmt( sth, SQL_DROP );
 890
 891         Debug( LDAP_DEBUG_TRACE, "<==backsql_oc_get_candidates()\n", 0, 0, 0 );
 892
 893         return ( bsi->n_candidates == -1 ? BACKSQL_STOP : BACKSQL_CONTINUE );
 894 }
 895
 896 int
 897 backsql_search(
 898         BackendDB       *be,
 899         Connection      *conn,
 900         Operation       *op,
 901         struct berval   *base,
 902         struct berval   *nbase,
 903         int             scope,
 904         int             deref,
 905         int             slimit,
 906         int             tlimit,
 907         Filter          *filter,
 908         struct berval   *filterstr,
 909         AttributeName   *attrs,
 910         int             attrsonly )
 911 {
 912         backsql_info            *bi = (backsql_info *)be->be_private;
 913         SQLHDBC                 dbh;
 914         int                     sres;
 915         int                     nentries;
 916         Entry                   *entry, *res;
 917         int                     manageDSAit = get_manageDSAit( op );
 918         BerVarray               v2refs = NULL;
 919         time_t                  stoptime = 0;
 920         backsql_srch_info       srch_info;
 921         backsql_entryID         *eid = NULL;
 922         struct slap_limits_set  *limit = NULL;
 923         int                     isroot = 0;
 924
 925         Debug( LDAP_DEBUG_TRACE, "==>backsql_search(): "
 926                 "base='%s', filter='%s', scope=%d,",
 927                 nbase->bv_val, filterstr->bv_val, scope );
 928         Debug( LDAP_DEBUG_TRACE, " deref=%d, attrsonly=%d, "
 929                 "attributes to load: %s\n",
 930                 deref, attrsonly, attrs == NULL ? "all" : "custom list" );
 931
 932         if ( nbase->bv_len > BACKSQL_MAX_DN_LEN ) {
 933                 Debug( LDAP_DEBUG_TRACE, "backsql_search(): "
 934                         "search base length (%ld) exceeds max length (%ld)\n",
 935                         nbase->bv_len, BACKSQL_MAX_DN_LEN, 0 );
 936                 /*
 937                  * FIXME: a LDAP_NO_SUCH_OBJECT could be appropriate
 938                  * since it is impossible that such a long DN exists
 939                  * in the backend
 940                  */
 941                 send_ldap_result( conn, op, LDAP_ADMINLIMIT_EXCEEDED,
 942                                 "", NULL, NULL, NULL );
 943                 return 1;
 944         }
 945
 946         sres = backsql_get_db_conn( be, conn, &dbh );
 947         if ( sres != LDAP_SUCCESS ) {
 948                 Debug( LDAP_DEBUG_TRACE, "backsql_search(): "
 949                         "could not get connection handle - exiting\n",
 950                         0, 0, 0 );
 951                 send_ldap_result( conn, op, sres, "",
 952                                 sres == LDAP_OTHER ?  "SQL-backend error" : "",
 953                                 NULL, NULL );
 954                 return 1;
 955         }
 956
 957         /* TimesTen : Pass it along to the lower level routines */
 958         srch_info.use_reverse_dn = BACKSQL_USE_REVERSE_DN( bi );
 959
 960         /* if not root, get appropriate limits */
 961         if ( be_isroot( be, &op->o_ndn ) ) {
 962                 isroot = 1;
 963         } else {
 964                 ( void ) get_limits( be, &op->o_ndn, &limit );
 965         }
 966
 967         /* The time/size limits come first because they require very little
 968          * effort, so there's no chance the candidates are selected and then
 969          * the request is not honored only because of time/size constraints */
 970
 971         /* if no time limit requested, use soft limit (unless root!) */
 972         if ( isroot ) {
 973                 if ( tlimit == 0 ) {
 974                         tlimit = -1;    /* allow root to set no limit */
 975                 }
 976
 977                 if ( slimit == 0 ) {
 978                         slimit = -1;
 979                 }
 980
 981         } else {
 982                 /* if no limit is required, use soft limit */
 983                 if ( tlimit <= 0 ) {
 984                         tlimit = limit->lms_t_soft;
 985
 986                 /* if requested limit higher than hard limit, abort */
 987                 } else if ( tlimit > limit->lms_t_hard ) {
 988                         /* no hard limit means use soft instead */
 989                         if ( limit->lms_t_hard == 0 && tlimit > limit->lms_t_soft ) {
 990                                 tlimit = limit->lms_t_soft;
 991
 992                         /* positive hard limit means abort */
 993                         } else if ( limit->lms_t_hard > 0 ) {
 994                                 send_search_result( conn, op,
 995                                                 LDAP_UNWILLING_TO_PERFORM,
 996                                                 NULL, NULL, NULL, NULL, 0 );
 997                                 return 0;
 998                         }
 999
1000                         /* negative hard limit means no limit */
1001                 }
1002
1003                 /* if no limit is required, use soft limit */
1004                 if ( slimit <= 0 ) {
1005                         slimit = limit->lms_s_soft;
1006
1007                 /* if requested limit higher than hard limit, abort */
1008                 } else if ( slimit > limit->lms_s_hard ) {
1009                         /* no hard limit means use soft instead */
1010                         if ( limit->lms_s_hard == 0 && slimit > limit->lms_s_soft ) {
1011                                 slimit = limit->lms_s_soft;
1012
1013                         /* positive hard limit means abort */
1014                         } else if ( limit->lms_s_hard > 0 ) {
1015                                 send_search_result( conn, op,
1016                                                 LDAP_UNWILLING_TO_PERFORM,
1017                                                 NULL, NULL, NULL, NULL, 0 );
1018                                 return 0;
1019                         }
1020
1021                         /* negative hard limit means no limit */
1022                 }
1023         }
1024
1025         /* compute it anyway; root does not use it */
1026         stoptime = op->o_time + tlimit;
1027
1028         backsql_init_search( &srch_info, bi, nbase, scope,
1029                         slimit, tlimit, stoptime, filter, dbh,
1030                         be, conn, op, attrs );
1031
1032         /*
1033          * for each objectclass we try to construct query which gets IDs
1034          * of entries matching LDAP query filter and scope (or at least
1035          * candidates), and get the IDs
1036          */
1037         srch_info.n_candidates = ( isroot ? -2 : limit->lms_s_unchecked == -1
1038                         ? -2 : limit->lms_s_unchecked );
1039         avl_apply( bi->oc_by_oc, (AVL_APPLY)backsql_oc_get_candidates,
1040                         &srch_info, BACKSQL_STOP, AVL_INORDER );
1041         if ( !isroot && limit->lms_s_unchecked != -1 ) {
1042                 if ( srch_info.n_candidates == -1 ) {
1043                         send_search_result( conn, op,
1044                                         LDAP_ADMINLIMIT_EXCEEDED,
1045                                         NULL, NULL, NULL, NULL, 0 );
1046                         goto done;
1047                 }
1048         }
1049
1050         nentries = 0;
1051         /*
1052          * now we load candidate entries (only those attributes
1053          * mentioned in attrs and filter), test it against full filter
1054          * and then send to client
1055          */
1056         for ( eid = srch_info.id_list; eid != NULL;
1057                         eid = backsql_free_entryID( eid, 1 ) ) {
1058 #ifdef SLAP_X_FILTER_HASSUBORDINATES
1059                 Attribute       *hasSubordinate = NULL,
1060                                 *a = NULL;
1061 #endif /* SLAP_X_FILTER_HASSUBORDINATES */
1062
1063                 /* check for abandon */
1064                 if ( op->o_abandon ) {
1065                         break;
1066                 }
1067
1068                 /* check time limit */
1069                 if ( tlimit != -1 && slap_get_time() > stoptime ) {
1070                         send_search_result( conn, op, LDAP_TIMELIMIT_EXCEEDED,
1071                                 NULL, NULL, v2refs, NULL, nentries );
1072                         goto end_of_search;
1073                 }
1074
1075                 Debug(LDAP_DEBUG_TRACE, "backsql_search(): loading data "
1076                         "for entry id=%ld, oc_id=%ld, keyval=%ld\n",
1077                         eid->id, eid->oc_id, eid->keyval );
1078
1079                 entry = (Entry *)ch_calloc( sizeof( Entry ), 1 );
1080                 res = backsql_id2entry( &srch_info, entry, eid );
1081                 if ( res == NULL ) {
1082                         Debug( LDAP_DEBUG_TRACE, "backsql_search(): "
1083                                 "error in backsql_id2entry() "
1084                                 "- skipping entry\n", 0, 0, 0 );
1085                         continue;
1086                 }
1087
1088                 if ( !manageDSAit && scope != LDAP_SCOPE_BASE &&
1089                         is_entry_referral( entry ) ) {
1090                         BerVarray refs = get_entry_referrals( be, conn,
1091                                         op, entry );
1092
1093                         send_search_reference( be, conn, op, entry, refs,
1094                                         NULL, &v2refs );
1095                         ber_bvarray_free( refs );
1096                         continue;
1097                 }
1098
1099 #ifdef SLAP_X_FILTER_HASSUBORDINATES
1100                 /*
1101                  * We use this flag since we need to parse the filter
1102                  * anyway; we should have used the frontend API function
1103                  * filter_has_subordinates()
1104                  */
1105                 if ( srch_info.bsi_flags & BSQL_SF_FILTER_HASSUBORDINATE ) {
1106                         int             rc;
1107
1108                         rc = backsql_has_children( bi, dbh, &entry->e_nname );
1109
1110                         switch( rc ) {
1111                         case LDAP_COMPARE_TRUE:
1112                         case LDAP_COMPARE_FALSE:
1113                                 hasSubordinate = slap_operational_hasSubordinate( rc == LDAP_COMPARE_TRUE );
1114                                 if ( hasSubordinate != NULL ) {
1115                                         for ( a = entry->e_attrs;
1116                                                         a && a->a_next;
1117                                                         a = a->a_next );
1118
1119                                         a->a_next = hasSubordinate;
1120                                 }
1121                                 rc = 0;
1122                                 break;
1123
1124                         default:
1125                                 Debug(LDAP_DEBUG_TRACE,
1126                                         "backsql_search(): "
1127                                         "has_children failed( %d)\n",
1128                                         rc, 0, 0 );
1129                                 rc = 1;
1130                                 break;
1131                         }
1132
1133                         if ( rc ) {
1134                                 continue;
1135                         }
1136                 }
1137 #endif /* SLAP_X_FILTER_HASSUBORDINATES */
1138
1139                 if ( test_filter( be, conn, op, entry, filter )
1140                                 == LDAP_COMPARE_TRUE ) {
1141 #ifdef SLAP_X_FILTER_HASSUBORDINATES
1142                         if ( hasSubordinate && !( srch_info.bsi_flags & BSQL_SF_ALL_OPER )
1143                                         && !ad_inlist( slap_schema.si_ad_hasSubordinates, attrs ) ) {
1144                                 a->a_next = NULL;
1145                                 attr_free( hasSubordinate );
1146                                 hasSubordinate = NULL;
1147                         }
1148 #endif /* SLAP_X_FILTER_HASSUBORDINATES */
1149
1150 #if 0   /* noop is masked SLAP_CTRL_UPDATE */
1151                         if ( op->o_noop ) {
1152                                 sres = 0;
1153                         } else {
1154 #endif
1155                                 sres = send_search_entry( be, conn, op, entry,
1156                                                 attrs, attrsonly, NULL );
1157 #if 0
1158                         }
1159 #endif
1160
1161                         switch ( sres ) {
1162                         case 0:
1163                                 nentries++;
1164                                 break;
1165
1166                         case -1:
1167                                 Debug( LDAP_DEBUG_TRACE, "backsql_search(): "
1168                                         "connection lost\n", 0, 0, 0 );
1169                                 goto end_of_search;
1170
1171                         default:
1172                                 /*
1173                                  * FIXME: send_search_entry failed;
1174                                  * better stop
1175                                  */
1176                                 break;
1177                         }
1178                 }
1179                 entry_free( entry );
1180
1181                 if ( slimit != -1 && nentries >= slimit ) {
1182                         send_search_result( conn, op, LDAP_SIZELIMIT_EXCEEDED,
1183                                 NULL, NULL, v2refs, NULL, nentries );
1184                         goto end_of_search;
1185                 }
1186         }
1187
1188 end_of_search:;
1189
1190         if ( nentries > 0 ) {
1191                 send_search_result( conn, op,
1192                         v2refs == NULL ? LDAP_SUCCESS : LDAP_REFERRAL,
1193                         NULL, NULL, v2refs, NULL, nentries );
1194         } else {
1195                 send_ldap_result( conn, op, srch_info.status,
1196                                 NULL, NULL, NULL, 0 );
1197         }
1198
1199 done:;
1200         ch_free( srch_info.attrs );
1201
1202         Debug( LDAP_DEBUG_TRACE, "<==backsql_search()\n", 0, 0, 0 );
1203         return 0;
1204 }
1205
1206 #endif /* SLAPD_SQL */
1207