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         struct berval           *filter_value = NULL;
 327
 328         Debug( LDAP_DEBUG_TRACE, "==>backsql_process_filter()\n", 0, 0, 0 );
 329         if ( f == NULL || f->f_choice == SLAPD_FILTER_COMPUTED ) {
 330                 return 0;
 331         }
 332
 333         switch( f->f_choice ) {
 334         case LDAP_FILTER_OR:
 335                 rc = backsql_process_filter_list( bsi, f->f_or,
 336                                 LDAP_FILTER_OR );
 337                 done = 1;
 338                 break;
 339
 340         case LDAP_FILTER_AND:
 341                 rc = backsql_process_filter_list( bsi, f->f_and,
 342                                 LDAP_FILTER_AND );
 343                 done = 1;
 344                 break;
 345
 346         case LDAP_FILTER_NOT:
 347                 backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len, "l",
 348                                 (ber_len_t)sizeof( "NOT (" /* ) */ ) - 1,
 349                                         "NOT (" /* ) */ );
 350                 rc = backsql_process_filter( bsi, f->f_not );
 351                 backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len, "c",
 352                                 /* ( */ ')' );
 353                 done = 1;
 354                 break;
 355
 356         case LDAP_FILTER_PRESENT:
 357                 ad = f->f_desc;
 358                 break;
 359
 360         case LDAP_FILTER_EXT:
 361                 ad = f->f_mra->ma_desc;
 362                 break;
 363
 364         default:
 365                 ad = f->f_av_desc;
 366                 break;
 367         }
 368
 369         if ( rc == -1 ) {
 370                 /* TimesTen : Don't run the query */
 371                 goto impossible;
 372         }
 373
 374         if ( done ) {
 375                 goto done;
 376         }
 377
 378         /*
 379          * Turn structuralObjectClass into objectClass
 380          */
 381         if ( ad == slap_schema.si_ad_objectClass
 382                         || ad == slap_schema.si_ad_structuralObjectClass ) {
 383                 at = &oc_attr;
 384                 backsql_strfcat( &at->sel_expr, &len, "cbc",
 385                                 '\'',
 386                                 &bsi->oc->oc->soc_cname,
 387                                 '\'' );
 388
 389 #if defined(SLAP_X_FILTER_HASSUBORDINATES) || defined(SLAP_X_MRA_MATCH_DNATTRS)
 390         } else if ( ad == slap_schema.si_ad_hasSubordinates || ad == NULL ) {
 391                 /*
 392                  * FIXME: this is not robust; e.g. a filter
 393                  * '(!(hasSubordinates=TRUE))' fails because
 394                  * in SQL it would read 'NOT (1=1)' instead
 395                  * of no condition.
 396                  * Note however that hasSubordinates is boolean,
 397                  * so a more appropriate filter would be
 398                  * '(hasSubordinates=FALSE)'
 399                  */
 400                 backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len, "l",
 401                                 (ber_len_t)sizeof( "1=1" ) - 1, "1=1" );
 402                 if ( ad != NULL ) {
 403                         /*
 404                          * We use this flag since we need to parse
 405                          * the filter anyway; we should have used
 406                          * the frontend API function
 407                          * filter_has_subordinates()
 408                          */
 409                         bsi->bsi_flags |= BSQL_SF_FILTER_HASSUBORDINATE;
 410                 } else {
 411                         /*
 412                          * clear attributes to fetch, to require ALL
 413                          * and try extended match on all attributes
 414                          */
 415                         backsql_attrlist_add( bsi, NULL );
 416                 }
 417                 goto done;
 418 #endif /* SLAP_X_FILTER_HASSUBORDINATES || SLAP_X_MRA_MATCH_DNATTRS */
 419
 420         } else {
 421                 at = backsql_ad2at( bsi->oc, ad );
 422         }
 423
 424         if ( at == NULL ) {
 425                 Debug( LDAP_DEBUG_TRACE, "backsql_process_filter(): "
 426                         "attribute '%s' is not defined for objectclass '%s'\n",
 427                         ad->ad_cname.bv_val, BACKSQL_OC_NAME( bsi->oc ), 0 );
 428                 backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len, "l",
 429                                 (ber_len_t)sizeof( "1=0" ) - 1, "1=0" );
 430                 goto impossible;
 431         }
 432
 433         backsql_merge_from_clause( &bsi->from, &bsi->from_len,
 434                         &at->from_tbls );
 435         /*
 436          * need to add this attribute to list of attrs to load,
 437          * so that we could do test_filter() later
 438          */
 439         backsql_attrlist_add( bsi, ad );
 440
 441         if ( at->join_where.bv_val != NULL
 442                         && strstr( bsi->join_where.bv_val, at->join_where.bv_val ) == NULL ) {
 443                 backsql_strfcat( &bsi->join_where, &bsi->jwhere_len, "lb",
 444                                 (ber_len_t)sizeof( " AND " ) - 1, " AND ",
 445                                 &at->join_where );
 446         }
 447
 448 #if 0
 449         /*
 450          * FIXME: this is not required any more; however, note that
 451          * attribute name syntax might collide with SQL legal aliases
 452          */
 453         if ( at != &oc_attr ) {
 454                 backsql_strfcat( &bsi->sel, &bsi->sel_len, "cblb",
 455                                 ',',
 456                                 &at->sel_expr,
 457                                 (ber_len_t)sizeof( " AS " ) - 1, " AS ",
 458                                 &at->name );
 459         }
 460 #endif
 461
 462         switch ( f->f_choice ) {
 463         case LDAP_FILTER_EQUALITY:
 464                 filter_value = &f->f_av_value;
 465                 goto equality_match;
 466
 467                 /* fail over next case */
 468
 469         case LDAP_FILTER_EXT:
 470                 filter_value = &f->f_mra->ma_value;
 471
 472 equality_match:;
 473                 /*
 474                  * maybe we should check type of at->sel_expr here somehow,
 475                  * to know whether upper_func is applicable, but for now
 476                  * upper_func stuff is made for Oracle, where UPPER is
 477                  * safely applicable to NUMBER etc.
 478                  */
 479                 if ( bsi->bi->upper_func.bv_val ) {
 480                         size_t  start;
 481
 482                         if ( at->sel_expr_u.bv_val ) {
 483                                 backsql_strfcat( &bsi->flt_where,
 484                                                 &bsi->fwhere_len, "cbl",
 485                                                 '(',
 486                                                 &at->sel_expr_u,
 487                                                 (ber_len_t)sizeof( "='" ) - 1,
 488                                                         "='" );
 489                         } else {
 490                                 backsql_strfcat( &bsi->flt_where,
 491                                                 &bsi->fwhere_len, "cbcbl",
 492                                                 '(' /* ) */ ,
 493                                                 &bsi->bi->upper_func,
 494                                                 '(' /* ) */ ,
 495                                                 &at->sel_expr,
 496                                                 (ber_len_t)sizeof( /* ( */ ")='" ) - 1,
 497                                                         /* ( */ ")='" );
 498                         }
 499
 500                         start = bsi->flt_where.bv_len;
 501
 502                         backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len,
 503                                         "bl",
 504                                         filter_value,
 505                                         (ber_len_t)sizeof( /* (' */ "')" ) - 1,
 506                                                 /* (' */ "')" );
 507
 508                         ldap_pvt_str2upper( &bsi->flt_where.bv_val[ start ] );
 509
 510                 } else {
 511                         backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len,
 512                                         "cblbl",
 513                                         '(',
 514                                         &at->sel_expr,
 515                                         (ber_len_t)sizeof( "='" ) - 1, "='",
 516                                         filter_value,
 517                                         (ber_len_t)sizeof( /* (' */ "')" ) - 1,
 518                                                 /* (' */ "')" );
 519                 }
 520                 break;
 521
 522         case LDAP_FILTER_GE:
 523                 /*
 524                  * FIXME: should we uppercase the operands?
 525                  */
 526                 backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len, "cblbc",
 527                                 '(' /* ) */ ,
 528                                 &at->sel_expr,
 529                                 (ber_len_t)sizeof( ">=" ) - 1, ">=",
 530                                 &f->f_av_value,
 531                                 /* ( */ ')' );
 532                 break;
 533
 534         case LDAP_FILTER_LE:
 535                 /*
 536                  * FIXME: should we uppercase the operands?
 537                  */
 538                 backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len, "cblbc",
 539                                 '(' /* ) */ ,
 540                                 &at->sel_expr,
 541                                 (ber_len_t)sizeof( "<=" ) - 1, "<=",
 542                                 &f->f_av_value,
 543                                 /* ( */ ')' );
 544                 break;
 545
 546         case LDAP_FILTER_PRESENT:
 547                 backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len, "lbl",
 548                                 (ber_len_t)sizeof( "NOT (" ) - 1, "NOT (",
 549                                 &at->sel_expr,
 550                                 (ber_len_t)sizeof( " IS NULL)" ) - 1, " IS NULL)" );
 551                 break;
 552
 553         case LDAP_FILTER_SUBSTRINGS:
 554                 backsql_process_sub_filter( bsi, f );
 555                 break;
 556
 557         case LDAP_FILTER_APPROX:
 558                 /* we do our best */
 559
 560                 /*
 561                  * maybe we should check type of at->sel_expr here somehow,
 562                  * to know whether upper_func is applicable, but for now
 563                  * upper_func stuff is made for Oracle, where UPPER is
 564                  * safely applicable to NUMBER etc.
 565                  */
 566                 if ( bsi->bi->upper_func.bv_val ) {
 567                         size_t  start;
 568
 569                         if ( at->sel_expr_u.bv_val ) {
 570                                 backsql_strfcat( &bsi->flt_where,
 571                                                 &bsi->fwhere_len, "cbl",
 572                                                 '(',
 573                                                 &at->sel_expr_u,
 574                                                 (ber_len_t)sizeof( " LIKE '%" ) - 1,
 575                                                         " LIKE '%" );
 576                         } else {
 577                                 backsql_strfcat( &bsi->flt_where,
 578                                                 &bsi->fwhere_len, "cbcbl",
 579                                                 '(' /* ) */ ,
 580                                                 &bsi->bi->upper_func,
 581                                                 '(' /* ) */ ,
 582                                                 &at->sel_expr,
 583                                                 (ber_len_t)sizeof( /* ( */ ") LIKE '%" ) - 1,
 584                                                         /* ( */ ") LIKE '%" );
 585                         }
 586
 587                         start = bsi->flt_where.bv_len;
 588
 589                         backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len,
 590                                         "bl",
 591                                         &f->f_av_value,
 592                                         (ber_len_t)sizeof( /* (' */ "%')" ) - 1,
 593                                                 /* (' */ "%')" );
 594
 595                         ldap_pvt_str2upper( &bsi->flt_where.bv_val[ start ] );
 596
 597                 } else {
 598                         backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len,
 599                                         "cblbl",
 600                                         '(',
 601                                         &at->sel_expr,
 602                                         (ber_len_t)sizeof( " LIKE '%" ) - 1,
 603                                                 " LIKE '%",
 604                                         &f->f_av_value,
 605                                         (ber_len_t)sizeof( /* (' */ "%')" ) - 1,
 606                                                 /* (' */ "%')" );
 607                 }
 608                 break;
 609
 610         default:
 611                 /* unhandled filter type; should not happen */
 612                 assert( 0 );
 613                 backsql_strfcat( &bsi->flt_where, &bsi->fwhere_len, "l",
 614                                 (ber_len_t)sizeof( "1=1" ) - 1, "1=1" );
 615                 break;
 616
 617         }
 618
 619 done:
 620         if ( oc_attr.sel_expr.bv_val != NULL ) {
 621                 free( oc_attr.sel_expr.bv_val );
 622         }
 623
 624         Debug( LDAP_DEBUG_TRACE, "<==backsql_process_filter()\n", 0, 0, 0 );
 625         return 1;
 626
 627 impossible:
 628         if ( oc_attr.sel_expr.bv_val != NULL ) {
 629                 free( oc_attr.sel_expr.bv_val );
 630         }
 631         Debug( LDAP_DEBUG_TRACE, "<==backsql_process_filter() returns -1\n",
 632                         0, 0, 0 );
 633         return -1;
 634 }
 635
 636 static int
 637 backsql_srch_query( backsql_srch_info *bsi, struct berval *query )
 638 {
 639         backsql_info    *bi = (backsql_info *)bsi->be->be_private;
 640         ber_len_t       q_len = 0;
 641         int             rc;
 642
 643         assert( query );
 644         query->bv_val = NULL;
 645         query->bv_len = 0;
 646
 647         Debug( LDAP_DEBUG_TRACE, "==>backsql_srch_query()\n", 0, 0, 0 );
 648         bsi->sel.bv_val = NULL;
 649         bsi->sel.bv_len = 0;
 650         bsi->sel_len = 0;
 651         bsi->from.bv_val = NULL;
 652         bsi->from.bv_len = 0;
 653         bsi->from_len = 0;
 654         bsi->join_where.bv_val = NULL;
 655         bsi->join_where.bv_len = 0;
 656         bsi->jwhere_len = 0;
 657         bsi->flt_where.bv_val = NULL;
 658         bsi->flt_where.bv_len = 0;
 659         bsi->fwhere_len = 0;
 660
 661 #if 0
 662         /*
 663          * FIXME: this query has been split in case a string cast function
 664          * is defined; more sophisticated (pattern based) function should
 665          * be used
 666          */
 667         backsql_strcat( &bsi->sel, &bsi->sel_len,
 668                         "SELECT DISTINCT ldap_entries.id,",
 669                         bsi->oc->keytbl.bv_val, ".", bsi->oc->keycol.bv_val,
 670                         ",'", bsi->oc->name.bv_val, "' AS objectClass",
 671                         ",ldap_entries.dn AS dn", NULL );
 672 #endif
 673
 674         backsql_strfcat( &bsi->sel, &bsi->sel_len, "lbcbc",
 675                         (ber_len_t)sizeof( "SELECT DISTINCT ldap_entries.id," ) - 1,
 676                                 "SELECT DISTINCT ldap_entries.id,",
 677                         &bsi->oc->keytbl,
 678                         '.',
 679                         &bsi->oc->keycol,
 680                         ',' );
 681
 682         if ( bi->strcast_func.bv_val ) {
 683                 backsql_strfcat( &bsi->sel, &bsi->sel_len, "blbl",
 684                                 &bi->strcast_func,
 685                                 (ber_len_t)sizeof( "('" /* ') */ ) - 1,
 686                                         "('" /* ') */ ,
 687                                 &bsi->oc->oc->soc_cname,
 688                                 (ber_len_t)sizeof( /* (' */ "')" ) - 1,
 689                                         /* (' */ "')" );
 690         } else {
 691                 backsql_strfcat( &bsi->sel, &bsi->sel_len, "cbc",
 692                                 '\'',
 693                                 &bsi->oc->oc->soc_cname,
 694                                 '\'' );
 695         }
 696         backsql_strfcat( &bsi->sel, &bsi->sel_len, "l",
 697                         (ber_len_t)sizeof( " AS objectClass,ldap_entries.dn AS dn" ) - 1,
 698                         " AS objectClass,ldap_entries.dn AS dn" );
 699
 700         backsql_strfcat( &bsi->from, &bsi->from_len, "lb",
 701                         (ber_len_t)sizeof( " FROM ldap_entries," ) - 1,
 702                                 " FROM ldap_entries,",
 703                         &bsi->oc->keytbl );
 704
 705         backsql_strfcat( &bsi->join_where, &bsi->jwhere_len, "lbcbl",
 706                         (ber_len_t)sizeof( " WHERE " ) - 1, " WHERE ",
 707                         &bsi->oc->keytbl,
 708                         '.',
 709                         &bsi->oc->keycol,
 710                         (ber_len_t)sizeof( "=ldap_entries.keyval AND ldap_entries.oc_map_id=? AND " ) - 1,
 711                                 "=ldap_entries.keyval AND ldap_entries.oc_map_id=? AND " );
 712
 713         switch ( bsi->scope ) {
 714         case LDAP_SCOPE_BASE:
 715                 if ( bsi->bi->upper_func.bv_val ) {
 716                         backsql_strfcat( &bsi->join_where, &bsi->jwhere_len,
 717                                         "blbcb",
 718                                         &bsi->bi->upper_func,
 719                                         (ber_len_t)sizeof( "(ldap_entries.dn)=" ) - 1,
 720                                                 "(ldap_entries.dn)=",
 721                                         &bsi->bi->upper_func_open,
 722                                         '?',
 723                                         &bsi->bi->upper_func_close );
 724                 } else {
 725                         backsql_strfcat( &bsi->join_where, &bsi->jwhere_len,
 726                                         "l",
 727                                         (ber_len_t)sizeof( "ldap_entries.dn=?" ) - 1,
 728                                                 "ldap_entries.dn=?" );
 729                 }
 730                 break;
 731
 732         case LDAP_SCOPE_ONELEVEL:
 733                 backsql_strfcat( &bsi->join_where, &bsi->jwhere_len, "l",
 734                                 (ber_len_t)sizeof( "ldap_entries.parent=?" ) - 1,
 735                                         "ldap_entries.parent=?" );
 736                 break;
 737
 738         case LDAP_SCOPE_SUBTREE:
 739                 if ( bsi->bi->upper_func.bv_val ) {
 740                         backsql_strfcat( &bsi->join_where, &bsi->jwhere_len,
 741                                         "blbcb",
 742                                         &bsi->bi->upper_func,
 743                                         (ber_len_t)sizeof( "(ldap_entries.dn) LIKE " ) - 1,
 744                                                 "(ldap_entries.dn) LIKE ",
 745                                         &bsi->bi->upper_func_open,
 746                                         '?',
 747                                         &bsi->bi->upper_func_close );
 748                 } else {
 749                         backsql_strfcat( &bsi->join_where, &bsi->jwhere_len,
 750                                         "l",
 751                                         (ber_len_t)sizeof( "ldap_entries.dn LIKE ?" ) - 1,
 752                                                 "ldap_entries.dn LIKE ?" );
 753                 }
 754
 755 #if 0
 756                 backsql_strfcat( &bsi->join_where, &bsi->jwhere_len, "b",
 757                                 &bsi->bi->subtree_cond );
 758 #endif
 759                 break;
 760
 761         default:
 762                 assert( 0 );
 763         }
 764
 765         rc = backsql_process_filter( bsi, bsi->filter );
 766         if ( rc > 0 ) {
 767                 backsql_strfcat( query, &q_len, "bbblb",
 768                                 &bsi->sel,
 769                                 &bsi->from,
 770                                 &bsi->join_where,
 771                                 (ber_len_t)sizeof( " AND " ) - 1, " AND ",
 772                                 &bsi->flt_where );
 773
 774         } else if ( rc < 0 ) {
 775                 /*
 776                  * Indicates that there's no possible way the filter matches
 777                  * anything.  No need to issue the query
 778                  */
 779                 Debug( LDAP_DEBUG_TRACE,
 780                         "<==backsql_srch_query() returns NULL\n", 0, 0, 0 );
 781                 free( query->bv_val );
 782                 query->bv_val = NULL;
 783         }
 784
 785         free( bsi->sel.bv_val );
 786         bsi->sel.bv_len = 0;
 787         bsi->sel_len = 0;
 788         free( bsi->from.bv_val );
 789         bsi->from.bv_len = 0;
 790         bsi->from_len = 0;
 791         free( bsi->join_where.bv_val );
 792         bsi->join_where.bv_len = 0;
 793         bsi->jwhere_len = 0;
 794         free( bsi->flt_where.bv_val );
 795         bsi->flt_where.bv_len = 0;
 796         bsi->fwhere_len = 0;
 797
 798         Debug( LDAP_DEBUG_TRACE, "<==backsql_srch_query()\n", 0, 0, 0 );
 799
 800         return ( query->bv_val == NULL ? 1 : 0 );
 801 }
 802
 803 int
 804 backsql_oc_get_candidates( backsql_oc_map_rec *oc, backsql_srch_info *bsi )
 805 {
 806         struct berval           query;
 807         SQLHSTMT                sth;
 808         RETCODE                 rc;
 809         backsql_entryID         base_id, *c_id;
 810         int                     res;
 811         BACKSQL_ROW_NTS         row;
 812         int                     i;
 813         int                     j;
 814
 815         Debug(  LDAP_DEBUG_TRACE, "==>backsql_oc_get_candidates(): oc='%s'\n",
 816                         BACKSQL_OC_NAME( oc ), 0, 0 );
 817
 818         if ( bsi->n_candidates == -1 ) {
 819                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 820                         "unchecked limit has been overcome\n", 0, 0, 0 );
 821                 /* should never get here */
 822                 assert( 0 );
 823                 return BACKSQL_STOP;
 824         }
 825
 826         bsi->oc = oc;
 827         if ( backsql_srch_query( bsi, &query ) ) {
 828                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 829                         "could not construct query for objectclass\n",
 830                         0, 0, 0 );
 831                 return BACKSQL_CONTINUE;
 832         }
 833
 834         Debug( LDAP_DEBUG_TRACE, "Constructed query: %s\n",
 835                         query.bv_val, 0, 0 );
 836
 837         rc = backsql_Prepare( bsi->dbh, &sth, query.bv_val, 0 );
 838         free( query.bv_val );
 839         if ( rc != SQL_SUCCESS ) {
 840                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 841                         "error preparing query\n", 0, 0, 0 );
 842                 backsql_PrintErrors( bsi->bi->db_env, bsi->dbh, sth, rc );
 843                 return BACKSQL_CONTINUE;
 844         }
 845
 846         if ( backsql_BindParamID( sth, 1, &bsi->oc->id ) != SQL_SUCCESS ) {
 847                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 848                         "error binding objectclass id parameter\n", 0, 0, 0 );
 849                 return BACKSQL_CONTINUE;
 850         }
 851
 852         switch ( bsi->scope ) {
 853         case LDAP_SCOPE_BASE:
 854                 rc = backsql_BindParamStr( sth, 2, bsi->base_dn->bv_val,
 855                                 BACKSQL_MAX_DN_LEN );
 856                 if ( rc != SQL_SUCCESS ) {
 857                         Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 858                                 "error binding base_dn parameter\n", 0, 0, 0 );
 859                         backsql_PrintErrors( bsi->bi->db_env, bsi->dbh,
 860                                         sth, rc );
 861                         return BACKSQL_CONTINUE;
 862                 }
 863                 break;
 864
 865         case LDAP_SCOPE_SUBTREE: {
 866
 867                 /*
 868                  * + 1 because we need room for '%'; this makes a subtree
 869                  * search for a DN BACKSQL_MAX_DN_LEN long legal
 870                  * if it returns that DN only
 871                  */
 872                 char            temp_base_dn[ BACKSQL_MAX_DN_LEN + 1 + 1 ];
 873
 874                 /*
 875                  * We do not accept DNs longer than BACKSQL_MAX_DN_LEN;
 876                  * however this should be handled earlier
 877                  */
 878                 assert( bsi->base_dn->bv_len <= BACKSQL_MAX_DN_LEN );
 879
 880                 /*
 881                  * Sets the parameters for the SQL built earlier
 882                  * NOTE that all the databases could actually use
 883                  * the TimesTen version, which would be cleaner
 884                  * and would also eliminate the need for the
 885                  * subtree_cond line in the configuration file.
 886                  * For now, I'm leaving it the way it is,
 887                  * so non-TimesTen databases use the original code.
 888                  * But at some point this should get cleaned up.
 889                  *
 890                  * If "dn" is being used, do a suffix search.
 891                  * If "dn_ru" is being used, do a prefix search.
 892                  */
 893                 if ( BACKSQL_HAS_LDAPINFO_DN_RU( bsi->bi ) ) {
 894                         temp_base_dn[ 0 ] = '\0';
 895                         for ( i = 0, j = bsi->base_dn->bv_len - 1;
 896                                         j >= 0; i++, j--) {
 897                                 temp_base_dn[ i ] = bsi->base_dn->bv_val[ j ];
 898                         }
 899                         temp_base_dn[ i ] = '%';
 900                         temp_base_dn[ i + 1 ] = '\0';
 901                         ldap_pvt_str2upper( temp_base_dn );
 902
 903                 } else {
 904                         temp_base_dn[ 0 ] = '%';
 905                         AC_MEMCPY( &temp_base_dn[ 1 ], bsi->base_dn->bv_val,
 906                                 bsi->base_dn->bv_len + 1 );
 907                         ldap_pvt_str2upper( &temp_base_dn[ 1 ] );
 908                 }
 909
 910                 Debug( LDAP_DEBUG_TRACE, "dn '%s'\n", temp_base_dn, 0, 0 );
 911
 912                 rc = backsql_BindParamStr( sth, 2, temp_base_dn,
 913                                 BACKSQL_MAX_DN_LEN );
 914                 if ( rc != SQL_SUCCESS ) {
 915                         Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 916                                 "error binding base_dn parameter (2)\n",
 917                                 0, 0, 0 );
 918                         backsql_PrintErrors( bsi->bi->db_env, bsi->dbh,
 919                                         sth, rc );
 920                         return BACKSQL_CONTINUE;
 921                 }
 922                 break;
 923         }
 924
 925         case LDAP_SCOPE_ONELEVEL:
 926                 res = backsql_dn2id( bsi->bi, &base_id,
 927                                 bsi->dbh, bsi->base_dn );
 928                 if ( res != LDAP_SUCCESS ) {
 929                         Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 930                                 "could not retrieve base_dn id%s\n",
 931                                 res == LDAP_NO_SUCH_OBJECT ? ": no such entry"
 932                                 : "", 0, 0 );
 933                         bsi->status = res;
 934                         return BACKSQL_CONTINUE;
 935                 }
 936
 937                 rc = backsql_BindParamID( sth, 2, &base_id.id );
 938                 backsql_free_entryID( &base_id, 0 );
 939                 if ( rc != SQL_SUCCESS ) {
 940                         Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 941                                 "error binding base id parameter\n", 0, 0, 0 );
 942                         return BACKSQL_CONTINUE;
 943                 }
 944                 break;
 945         }
 946
 947         rc = SQLExecute( sth );
 948         if ( !BACKSQL_SUCCESS( rc ) ) {
 949                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 950                         "error executing query\n", 0, 0, 0 );
 951                 backsql_PrintErrors( bsi->bi->db_env, bsi->dbh, sth, rc );
 952                 SQLFreeStmt( sth, SQL_DROP );
 953                 return BACKSQL_CONTINUE;
 954         }
 955
 956         backsql_BindRowAsStrings( sth, &row );
 957         rc = SQLFetch( sth );
 958         for ( ; BACKSQL_SUCCESS( rc ); rc = SQLFetch( sth ) ) {
 959                 c_id = (backsql_entryID *)ch_calloc( 1,
 960                                 sizeof( backsql_entryID ) );
 961                 c_id->id = strtol( row.cols[ 0 ], NULL, 0 );
 962                 c_id->keyval = strtol( row.cols[ 1 ], NULL, 0 );
 963                 c_id->oc_id = bsi->oc->id;
 964                 ber_str2bv( row.cols[ 3 ], 0, 1, &c_id->dn );
 965                 c_id->next = bsi->id_list;
 966                 bsi->id_list = c_id;
 967                 bsi->n_candidates--;
 968
 969                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 970                         "added entry id=%ld, keyval=%ld dn='%s'\n",
 971                         c_id->id, c_id->keyval, row.cols[ 3 ] );
 972
 973                 if ( bsi->n_candidates == -1 ) {
 974                         break;
 975                 }
 976         }
 977         backsql_FreeRow( &row );
 978         SQLFreeStmt( sth, SQL_DROP );
 979
 980         Debug( LDAP_DEBUG_TRACE, "<==backsql_oc_get_candidates()\n", 0, 0, 0 );
 981
 982         return ( bsi->n_candidates == -1 ? BACKSQL_STOP : BACKSQL_CONTINUE );
 983 }
 984
 985 int
 986 backsql_search(
 987         BackendDB       *be,
 988         Connection      *conn,
 989         Operation       *op,
 990         struct berval   *base,
 991         struct berval   *nbase,
 992         int             scope,
 993         int             deref,
 994         int             slimit,
 995         int             tlimit,
 996         Filter          *filter,
 997         struct berval   *filterstr,
 998         AttributeName   *attrs,
 999         int             attrsonly )
1000 {
1001         backsql_info            *bi = (backsql_info *)be->be_private;
1002         SQLHDBC                 dbh;
1003         int                     sres;
1004         int                     nentries;
1005         Entry                   *entry, *res;
1006         int                     manageDSAit = get_manageDSAit( op );
1007         BerVarray               v2refs = NULL;
1008         time_t                  stoptime = 0;
1009         backsql_srch_info       srch_info;
1010         backsql_entryID         *eid = NULL;
1011         struct slap_limits_set  *limit = NULL;
1012         int                     isroot = 0;
1013
1014         Debug( LDAP_DEBUG_TRACE, "==>backsql_search(): "
1015                 "base='%s', filter='%s', scope=%d,",
1016                 nbase->bv_val, filterstr->bv_val, scope );
1017         Debug( LDAP_DEBUG_TRACE, " deref=%d, attrsonly=%d, "
1018                 "attributes to load: %s\n",
1019                 deref, attrsonly, attrs == NULL ? "all" : "custom list" );
1020
1021         if ( nbase->bv_len > BACKSQL_MAX_DN_LEN ) {
1022                 Debug( LDAP_DEBUG_TRACE, "backsql_search(): "
1023                         "search base length (%ld) exceeds max length (%ld)\n",
1024                         nbase->bv_len, BACKSQL_MAX_DN_LEN, 0 );
1025                 /*
1026                  * FIXME: a LDAP_NO_SUCH_OBJECT could be appropriate
1027                  * since it is impossible that such a long DN exists
1028                  * in the backend
1029                  */
1030                 send_ldap_result( conn, op, LDAP_ADMINLIMIT_EXCEEDED,
1031                                 "", NULL, NULL, NULL );
1032                 return 1;
1033         }
1034
1035         sres = backsql_get_db_conn( be, conn, &dbh );
1036         if ( sres != LDAP_SUCCESS ) {
1037                 Debug( LDAP_DEBUG_TRACE, "backsql_search(): "
1038                         "could not get connection handle - exiting\n",
1039                         0, 0, 0 );
1040                 send_ldap_result( conn, op, sres, "",
1041                                 sres == LDAP_OTHER ?  "SQL-backend error" : "",
1042                                 NULL, NULL );
1043                 return 1;
1044         }
1045
1046         /* TimesTen : Pass it along to the lower level routines */
1047         srch_info.use_reverse_dn = BACKSQL_USE_REVERSE_DN( bi );
1048
1049         /* if not root, get appropriate limits */
1050         if ( be_isroot( be, &op->o_ndn ) ) {
1051                 isroot = 1;
1052         } else {
1053                 ( void ) get_limits( be, &op->o_ndn, &limit );
1054         }
1055
1056         /* The time/size limits come first because they require very little
1057          * effort, so there's no chance the candidates are selected and then
1058          * the request is not honored only because of time/size constraints */
1059
1060         /* if no time limit requested, use soft limit (unless root!) */
1061         if ( isroot ) {
1062                 if ( tlimit == 0 ) {
1063                         tlimit = -1;    /* allow root to set no limit */
1064                 }
1065
1066                 if ( slimit == 0 ) {
1067                         slimit = -1;
1068                 }
1069
1070         } else {
1071                 /* if no limit is required, use soft limit */
1072                 if ( tlimit <= 0 ) {
1073                         tlimit = limit->lms_t_soft;
1074
1075                 /* if requested limit higher than hard limit, abort */
1076                 } else if ( tlimit > limit->lms_t_hard ) {
1077                         /* no hard limit means use soft instead */
1078                         if ( limit->lms_t_hard == 0 && tlimit > limit->lms_t_soft ) {
1079                                 tlimit = limit->lms_t_soft;
1080
1081                         /* positive hard limit means abort */
1082                         } else if ( limit->lms_t_hard > 0 ) {
1083                                 send_search_result( conn, op,
1084                                                 LDAP_UNWILLING_TO_PERFORM,
1085                                                 NULL, NULL, NULL, NULL, 0 );
1086                                 return 0;
1087                         }
1088
1089                         /* negative hard limit means no limit */
1090                 }
1091
1092                 /* if no limit is required, use soft limit */
1093                 if ( slimit <= 0 ) {
1094                         slimit = limit->lms_s_soft;
1095
1096                 /* if requested limit higher than hard limit, abort */
1097                 } else if ( slimit > limit->lms_s_hard ) {
1098                         /* no hard limit means use soft instead */
1099                         if ( limit->lms_s_hard == 0 && slimit > limit->lms_s_soft ) {
1100                                 slimit = limit->lms_s_soft;
1101
1102                         /* positive hard limit means abort */
1103                         } else if ( limit->lms_s_hard > 0 ) {
1104                                 send_search_result( conn, op,
1105                                                 LDAP_UNWILLING_TO_PERFORM,
1106                                                 NULL, NULL, NULL, NULL, 0 );
1107                                 return 0;
1108                         }
1109
1110                         /* negative hard limit means no limit */
1111                 }
1112         }
1113
1114         /* compute it anyway; root does not use it */
1115         stoptime = op->o_time + tlimit;
1116
1117         backsql_init_search( &srch_info, bi, nbase, scope,
1118                         slimit, tlimit, stoptime, filter, dbh,
1119                         be, conn, op, attrs );
1120
1121         /*
1122          * for each objectclass we try to construct query which gets IDs
1123          * of entries matching LDAP query filter and scope (or at least
1124          * candidates), and get the IDs
1125          */
1126         srch_info.n_candidates = ( isroot ? -2 : limit->lms_s_unchecked == -1
1127                         ? -2 : limit->lms_s_unchecked );
1128         avl_apply( bi->oc_by_oc, (AVL_APPLY)backsql_oc_get_candidates,
1129                         &srch_info, BACKSQL_STOP, AVL_INORDER );
1130         if ( !isroot && limit->lms_s_unchecked != -1 ) {
1131                 if ( srch_info.n_candidates == -1 ) {
1132                         send_search_result( conn, op,
1133                                         LDAP_ADMINLIMIT_EXCEEDED,
1134                                         NULL, NULL, NULL, NULL, 0 );
1135                         goto done;
1136                 }
1137         }
1138
1139         nentries = 0;
1140         /*
1141          * now we load candidate entries (only those attributes
1142          * mentioned in attrs and filter), test it against full filter
1143          * and then send to client
1144          */
1145         for ( eid = srch_info.id_list; eid != NULL;
1146                         eid = backsql_free_entryID( eid, 1 ) ) {
1147 #ifdef SLAP_X_FILTER_HASSUBORDINATES
1148                 Attribute       *hasSubordinate = NULL,
1149                                 *a = NULL;
1150 #endif /* SLAP_X_FILTER_HASSUBORDINATES */
1151
1152                 /* check for abandon */
1153                 if ( op->o_abandon ) {
1154                         break;
1155                 }
1156
1157                 /* check time limit */
1158                 if ( tlimit != -1 && slap_get_time() > stoptime ) {
1159                         send_search_result( conn, op, LDAP_TIMELIMIT_EXCEEDED,
1160                                 NULL, NULL, v2refs, NULL, nentries );
1161                         goto end_of_search;
1162                 }
1163
1164                 Debug(LDAP_DEBUG_TRACE, "backsql_search(): loading data "
1165                         "for entry id=%ld, oc_id=%ld, keyval=%ld\n",
1166                         eid->id, eid->oc_id, eid->keyval );
1167
1168                 entry = (Entry *)ch_calloc( sizeof( Entry ), 1 );
1169                 res = backsql_id2entry( &srch_info, entry, eid );
1170                 if ( res == NULL ) {
1171                         Debug( LDAP_DEBUG_TRACE, "backsql_search(): "
1172                                 "error in backsql_id2entry() "
1173                                 "- skipping entry\n", 0, 0, 0 );
1174                         continue;
1175                 }
1176
1177                 if ( !manageDSAit && scope != LDAP_SCOPE_BASE &&
1178                         is_entry_referral( entry ) ) {
1179                         BerVarray refs = get_entry_referrals( be, conn,
1180                                         op, entry );
1181
1182                         send_search_reference( be, conn, op, entry, refs,
1183                                         NULL, &v2refs );
1184                         ber_bvarray_free( refs );
1185                         continue;
1186                 }
1187
1188 #ifdef SLAP_X_FILTER_HASSUBORDINATES
1189                 /*
1190                  * We use this flag since we need to parse the filter
1191                  * anyway; we should have used the frontend API function
1192                  * filter_has_subordinates()
1193                  */
1194                 if ( srch_info.bsi_flags & BSQL_SF_FILTER_HASSUBORDINATE ) {
1195                         int             rc;
1196
1197                         rc = backsql_has_children( bi, dbh, &entry->e_nname );
1198
1199                         switch( rc ) {
1200                         case LDAP_COMPARE_TRUE:
1201                         case LDAP_COMPARE_FALSE:
1202                                 hasSubordinate = slap_operational_hasSubordinate( rc == LDAP_COMPARE_TRUE );
1203                                 if ( hasSubordinate != NULL ) {
1204                                         for ( a = entry->e_attrs;
1205                                                         a && a->a_next;
1206                                                         a = a->a_next );
1207
1208                                         a->a_next = hasSubordinate;
1209                                 }
1210                                 rc = 0;
1211                                 break;
1212
1213                         default:
1214                                 Debug(LDAP_DEBUG_TRACE,
1215                                         "backsql_search(): "
1216                                         "has_children failed( %d)\n",
1217                                         rc, 0, 0 );
1218                                 rc = 1;
1219                                 break;
1220                         }
1221
1222                         if ( rc ) {
1223                                 continue;
1224                         }
1225                 }
1226 #endif /* SLAP_X_FILTER_HASSUBORDINATES */
1227
1228                 if ( test_filter( be, conn, op, entry, filter )
1229                                 == LDAP_COMPARE_TRUE ) {
1230 #ifdef SLAP_X_FILTER_HASSUBORDINATES
1231                         if ( hasSubordinate && !( srch_info.bsi_flags & BSQL_SF_ALL_OPER )
1232                                         && !ad_inlist( slap_schema.si_ad_hasSubordinates, attrs ) ) {
1233                                 a->a_next = NULL;
1234                                 attr_free( hasSubordinate );
1235                                 hasSubordinate = NULL;
1236                         }
1237 #endif /* SLAP_X_FILTER_HASSUBORDINATES */
1238
1239 #if 0   /* noop is masked SLAP_CTRL_UPDATE */
1240                         if ( op->o_noop ) {
1241                                 sres = 0;
1242                         } else {
1243 #endif
1244                                 sres = send_search_entry( be, conn, op, entry,
1245                                                 attrs, attrsonly, NULL );
1246 #if 0
1247                         }
1248 #endif
1249
1250                         switch ( sres ) {
1251                         case 0:
1252                                 nentries++;
1253                                 break;
1254
1255                         case -1:
1256                                 Debug( LDAP_DEBUG_TRACE, "backsql_search(): "
1257                                         "connection lost\n", 0, 0, 0 );
1258                                 goto end_of_search;
1259
1260                         default:
1261                                 /*
1262                                  * FIXME: send_search_entry failed;
1263                                  * better stop
1264                                  */
1265                                 break;
1266                         }
1267                 }
1268                 entry_free( entry );
1269
1270                 if ( slimit != -1 && nentries >= slimit ) {
1271                         send_search_result( conn, op, LDAP_SIZELIMIT_EXCEEDED,
1272                                 NULL, NULL, v2refs, NULL, nentries );
1273                         goto end_of_search;
1274                 }
1275         }
1276
1277 end_of_search:;
1278
1279         if ( nentries > 0 ) {
1280                 send_search_result( conn, op,
1281                         v2refs == NULL ? LDAP_SUCCESS : LDAP_REFERRAL,
1282                         NULL, NULL, v2refs, NULL, nentries );
1283         } else {
1284                 send_ldap_result( conn, op, srch_info.status,
1285                                 NULL, NULL, NULL, 0 );
1286         }
1287
1288 done:;
1289         ch_free( srch_info.attrs );
1290
1291         Debug( LDAP_DEBUG_TRACE, "<==backsql_search()\n", 0, 0, 0 );
1292         return 0;
1293 }
1294
1295 #endif /* SLAPD_SQL */
1296