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         struct berval           *base,
  88         int                     scope,
  89         int                     slimit,
  90         int                     tlimit,
  91         time_t                  stoptime,
  92         Filter                  *filter,
  93         SQLHDBC                 dbh,
  94         Operation               *op,
  95         AttributeName           *attrs )
  96 {
  97         AttributeName           *p;
  98
  99         bsi->base_dn = base;
 100         bsi->scope = scope;
 101         bsi->slimit = slimit;
 102         bsi->tlimit = tlimit;
 103         bsi->filter = filter;
 104         bsi->dbh = dbh;
 105         bsi->op = op;
 106         bsi->bsi_flags = 0;
 107
 108         /*
 109          * handle "*"
 110          */
 111         if ( attrs == NULL || an_find( attrs, &AllUser ) ) {
 112                 bsi->attrs = NULL;
 113
 114         } else {
 115                 bsi->attrs = (AttributeName *)ch_calloc( 1,
 116                                 sizeof( AttributeName ) );
 117                 bsi->attrs[ 0 ].an_name.bv_val = NULL;
 118                 bsi->attrs[ 0 ].an_name.bv_len = 0;
 119
 120                 for ( p = attrs; p->an_name.bv_val; p++ ) {
 121                         /*
 122                          * ignore "1.1"; handle "+"
 123                          */
 124                         if ( BACKSQL_NCMP( &p->an_name, &AllOper ) == 0 ) {
 125                                 bsi->bsi_flags |= BSQL_SF_ALL_OPER;
 126                                 continue;
 127
 128                         } else if ( BACKSQL_NCMP( &p->an_name, &NoAttrs ) == 0 ) {
 129                                 continue;
 130                         }
 131
 132                         backsql_attrlist_add( bsi, p->an_desc );
 133                 }
 134         }
 135
 136         bsi->abandon = 0;
 137         bsi->id_list = NULL;
 138         bsi->n_candidates = 0;
 139         bsi->stoptime = stoptime;
 140         bsi->sel.bb_val.bv_val = NULL;
 141         bsi->sel.bb_val.bv_len = 0;
 142         bsi->sel.bb_len = 0;
 143         bsi->from.bb_val.bv_val = NULL;
 144         bsi->from.bb_val.bv_len = 0;
 145         bsi->from.bb_len = 0;
 146         bsi->join_where.bb_val.bv_val = NULL;
 147         bsi->join_where.bb_val.bv_len = 0;
 148         bsi->join_where.bb_len = 0;
 149         bsi->flt_where.bb_val.bv_val = NULL;
 150         bsi->flt_where.bb_val.bv_len = 0;
 151         bsi->flt_where.bb_len = 0;
 152
 153         bsi->status = LDAP_SUCCESS;
 154 }
 155
 156 static int
 157 backsql_process_filter_list( backsql_srch_info *bsi, Filter *f, int op )
 158 {
 159         int             res;
 160
 161         if ( !f ) {
 162                 return 0;
 163         }
 164
 165         backsql_strfcat( &bsi->flt_where, "c", '(' /* ) */  );
 166
 167         while ( 1 ) {
 168                 res = backsql_process_filter( bsi, f );
 169                 if ( res < 0 ) {
 170                         /*
 171                          * TimesTen : If the query has no answers,
 172                          * don't bother to run the query.
 173                          */
 174                         return -1;
 175                 }
 176
 177                 f = f->f_next;
 178                 if ( f == NULL ) {
 179                         break;
 180                 }
 181
 182                 switch ( op ) {
 183                 case LDAP_FILTER_AND:
 184                         backsql_strfcat( &bsi->flt_where, "l",
 185                                         (ber_len_t)sizeof( " AND " ) - 1,
 186                                                 " AND " );
 187                         break;
 188
 189                 case LDAP_FILTER_OR:
 190                         backsql_strfcat( &bsi->flt_where, "l",
 191                                         (ber_len_t)sizeof( " OR " ) - 1,
 192                                                 " OR " );
 193                         break;
 194                 }
 195         }
 196
 197         backsql_strfcat( &bsi->flt_where, "c", /* ( */ ')' );
 198
 199         return 1;
 200 }
 201
 202 static int
 203 backsql_process_sub_filter( backsql_srch_info *bsi, Filter *f )
 204 {
 205         int                     i;
 206         backsql_at_map_rec      *at;
 207         backsql_info            *bi = (backsql_info *)bsi->op->o_bd->be_private;
 208
 209         if ( !f ) {
 210                 return 0;
 211         }
 212
 213         at = backsql_ad2at( bsi->oc, f->f_sub_desc );
 214
 215         assert( at );
 216
 217         /*
 218          * When dealing with case-sensitive strings
 219          * we may omit normalization; however, normalized
 220          * SQL filters are more liberal.
 221          */
 222
 223         backsql_strfcat( &bsi->flt_where, "c", '(' /* ) */  );
 224
 225         /* TimesTen */
 226         Debug( LDAP_DEBUG_TRACE, "expr: '%s' '%s'\n", at->sel_expr.bv_val,
 227                 at->sel_expr_u.bv_val ? at->sel_expr_u.bv_val : "<NULL>", 0 );
 228         if ( bi->upper_func.bv_val ) {
 229                 /*
 230                  * If a pre-upper-cased version of the column exists, use it
 231                  */
 232                 if ( at->sel_expr_u.bv_val ) {
 233                         backsql_strfcat( &bsi->flt_where,
 234                                         "bl",
 235                                         &at->sel_expr_u,
 236                                         (ber_len_t)sizeof( " LIKE '" ) - 1,
 237                                                 " LIKE '" );
 238                 } else {
 239                         backsql_strfcat( &bsi->flt_where,
 240                                         "bcbcl",
 241                                         &bi->upper_func,
 242                                         '(',
 243                                         &at->sel_expr,
 244                                         ')',
 245                                         (ber_len_t)sizeof( " LIKE '" ) - 1,
 246                                                 " LIKE '" );
 247                 }
 248         } else {
 249                 backsql_strfcat( &bsi->flt_where, "bl",
 250                                 &at->sel_expr,
 251                                 (ber_len_t)sizeof( " LIKE '" ) - 1, " LIKE '" );
 252         }
 253
 254         if ( f->f_sub_initial.bv_val != NULL ) {
 255                 size_t  start;
 256
 257                 start = bsi->flt_where.bb_val.bv_len;
 258                 backsql_strfcat( &bsi->flt_where, "b",
 259                                 &f->f_sub_initial );
 260                 if ( bi->upper_func.bv_val ) {
 261                         ldap_pvt_str2upper( &bsi->flt_where.bb_val.bv_val[ start ] );
 262                 }
 263         }
 264
 265         backsql_strfcat( &bsi->flt_where, "c", '%' );
 266
 267         if ( f->f_sub_any != NULL ) {
 268                 for ( i = 0; f->f_sub_any[ i ].bv_val != NULL; i++ ) {
 269                         size_t  start;
 270
 271 #ifdef BACKSQL_TRACE
 272                         Debug( LDAP_DEBUG_TRACE,
 273                                 "==>backsql_process_sub_filter(): "
 274                                 "sub_any='%s'\n", f->f_sub_any[ i ].bv_val,
 275                                 0, 0 );
 276 #endif /* BACKSQL_TRACE */
 277
 278                         start = bsi->flt_where.bb_val.bv_len;
 279                         backsql_strfcat( &bsi->flt_where,
 280                                         "bc",
 281                                         &f->f_sub_any[ i ],
 282                                         '%' );
 283                         if ( bi->upper_func.bv_val ) {
 284                                 /*
 285                                  * Note: toupper('%') = '%'
 286                                  */
 287                                 ldap_pvt_str2upper( &bsi->flt_where.bb_val.bv_val[ start ] );
 288                         }
 289                 }
 290
 291                 if ( f->f_sub_final.bv_val != NULL ) {
 292                         size_t  start;
 293
 294                         start = bsi->flt_where.bb_val.bv_len;
 295                         backsql_strfcat( &bsi->flt_where, "b",
 296                                         &f->f_sub_final );
 297                         if ( bi->upper_func.bv_val ) {
 298                                 ldap_pvt_str2upper( &bsi->flt_where.bb_val.bv_val[ start ] );
 299                         }
 300                 }
 301         }
 302
 303         backsql_strfcat( &bsi->flt_where, "l",
 304                         (ber_len_t)sizeof( /* (' */ "')" ) - 1, /* ( */ "')" );
 305
 306         return 1;
 307 }
 308
 309 static int
 310 backsql_process_filter( backsql_srch_info *bsi, Filter *f )
 311 {
 312         backsql_info            *bi = (backsql_info *)bsi->op->o_bd->be_private;
 313         backsql_at_map_rec      *at;
 314         backsql_at_map_rec      oc_attr = {
 315                 slap_schema.si_ad_objectClass, BER_BVC(""), BER_BVC(""),
 316                 BER_BVNULL, NULL, NULL, NULL };
 317         AttributeDescription    *ad = NULL;
 318         int                     done = 0;
 319         /* TimesTen */
 320         int                     rc = 0;
 321         struct berval           *filter_value = NULL;
 322
 323         Debug( LDAP_DEBUG_TRACE, "==>backsql_process_filter()\n", 0, 0, 0 );
 324         if ( f == NULL || f->f_choice == SLAPD_FILTER_COMPUTED ) {
 325                 return 0;
 326         }
 327
 328         switch( f->f_choice ) {
 329         case LDAP_FILTER_OR:
 330                 rc = backsql_process_filter_list( bsi, f->f_or,
 331                                 LDAP_FILTER_OR );
 332                 done = 1;
 333                 break;
 334
 335         case LDAP_FILTER_AND:
 336                 rc = backsql_process_filter_list( bsi, f->f_and,
 337                                 LDAP_FILTER_AND );
 338                 done = 1;
 339                 break;
 340
 341         case LDAP_FILTER_NOT:
 342                 backsql_strfcat( &bsi->flt_where, "l",
 343                                 (ber_len_t)sizeof( "NOT (" /* ) */ ) - 1,
 344                                         "NOT (" /* ) */ );
 345                 rc = backsql_process_filter( bsi, f->f_not );
 346                 backsql_strfcat( &bsi->flt_where, "c", /* ( */ ')' );
 347                 done = 1;
 348                 break;
 349
 350         case LDAP_FILTER_PRESENT:
 351                 ad = f->f_desc;
 352                 break;
 353
 354         case LDAP_FILTER_EXT:
 355                 ad = f->f_mra->ma_desc;
 356                 break;
 357
 358         default:
 359                 ad = f->f_av_desc;
 360                 break;
 361         }
 362
 363         if ( rc == -1 ) {
 364                 /* TimesTen : Don't run the query */
 365                 goto impossible;
 366         }
 367
 368         if ( done ) {
 369                 goto done;
 370         }
 371
 372         /*
 373          * Turn structuralObjectClass into objectClass
 374          */
 375         if ( ad == slap_schema.si_ad_objectClass
 376                         || ad == slap_schema.si_ad_structuralObjectClass ) {
 377                 struct berbuf           bb = BB_NULL;
 378
 379                 at = &oc_attr;
 380                 backsql_strfcat( &bb, "cbc",
 381                                 '\'',
 382                                 &bsi->oc->oc->soc_cname,
 383                                 '\'' );
 384                 at->sel_expr = bb.bb_val;
 385
 386         } else if ( ad == slap_schema.si_ad_hasSubordinates || ad == NULL ) {
 387                 /*
 388                  * FIXME: this is not robust; e.g. a filter
 389                  * '(!(hasSubordinates=TRUE))' fails because
 390                  * in SQL it would read 'NOT (1=1)' instead
 391                  * of no condition.
 392                  * Note however that hasSubordinates is boolean,
 393                  * so a more appropriate filter would be
 394                  * '(hasSubordinates=FALSE)'
 395                  */
 396                 backsql_strfcat( &bsi->flt_where, "l",
 397                                 (ber_len_t)sizeof( "1=1" ) - 1, "1=1" );
 398                 if ( ad == slap_schema.si_ad_hasSubordinates ) {
 399                         /*
 400                          * We use this flag since we need to parse
 401                          * the filter anyway; we should have used
 402                          * the frontend API function
 403                          * filter_has_subordinates()
 404                          */
 405                         bsi->bsi_flags |= BSQL_SF_FILTER_HASSUBORDINATE;
 406
 407                 } else {
 408                         /*
 409                          * clear attributes to fetch, to require ALL
 410                          * and try extended match on all attributes
 411                          */
 412                         backsql_attrlist_add( bsi, NULL );
 413                 }
 414                 goto done;
 415
 416         } else {
 417                 at = backsql_ad2at( bsi->oc, ad );
 418         }
 419
 420         if ( at == NULL ) {
 421                 Debug( LDAP_DEBUG_TRACE, "backsql_process_filter(): "
 422                         "attribute '%s' is not defined for objectclass '%s'\n",
 423                         ad->ad_cname.bv_val, BACKSQL_OC_NAME( bsi->oc ), 0 );
 424                 backsql_strfcat( &bsi->flt_where, "l",
 425                                 (ber_len_t)sizeof( "1=0" ) - 1, "1=0" );
 426                 goto impossible;
 427         }
 428
 429         backsql_merge_from_clause( &bsi->from, &at->from_tbls );
 430         /*
 431          * need to add this attribute to list of attrs to load,
 432          * so that we could do test_filter() later
 433          */
 434         backsql_attrlist_add( bsi, ad );
 435
 436         if ( at->join_where.bv_val != NULL
 437                         && strstr( bsi->join_where.bb_val.bv_val, at->join_where.bv_val ) == NULL ) {
 438                 backsql_strfcat( &bsi->join_where, "lb",
 439                                 (ber_len_t)sizeof( " AND " ) - 1, " AND ",
 440                                 &at->join_where );
 441         }
 442
 443 #if 0
 444         /*
 445          * FIXME: this is not required any more; however, note that
 446          * attribute name syntax might collide with SQL legal aliases
 447          */
 448         if ( at != &oc_attr ) {
 449                 backsql_strfcat( &bsi->sel, "cblb",
 450                                 ',',
 451                                 &at->sel_expr,
 452                                 (ber_len_t)sizeof( " AS " ) - 1, " AS ",
 453                                 &at->name );
 454         }
 455 #endif
 456
 457         switch ( f->f_choice ) {
 458         case LDAP_FILTER_EQUALITY:
 459                 filter_value = &f->f_av_value;
 460                 goto equality_match;
 461
 462                 /* fail over next case */
 463
 464         case LDAP_FILTER_EXT:
 465                 filter_value = &f->f_mra->ma_value;
 466
 467 equality_match:;
 468                 /*
 469                  * maybe we should check type of at->sel_expr here somehow,
 470                  * to know whether upper_func is applicable, but for now
 471                  * upper_func stuff is made for Oracle, where UPPER is
 472                  * safely applicable to NUMBER etc.
 473                  */
 474                 if ( bi->upper_func.bv_val ) {
 475                         size_t  start;
 476
 477                         if ( at->sel_expr_u.bv_val ) {
 478                                 backsql_strfcat( &bsi->flt_where, "cbl",
 479                                                 '(',
 480                                                 &at->sel_expr_u,
 481                                                 (ber_len_t)sizeof( "='" ) - 1,
 482                                                         "='" );
 483                         } else {
 484                                 backsql_strfcat( &bsi->flt_where, "cbcbl",
 485                                                 '(' /* ) */ ,
 486                                                 &bi->upper_func,
 487                                                 '(' /* ) */ ,
 488                                                 &at->sel_expr,
 489                                                 (ber_len_t)sizeof( /* ( */ ")='" ) - 1,
 490                                                         /* ( */ ")='" );
 491                         }
 492
 493                         start = bsi->flt_where.bb_val.bv_len;
 494
 495                         backsql_strfcat( &bsi->flt_where, "bl",
 496                                         filter_value,
 497                                         (ber_len_t)sizeof( /* (' */ "')" ) - 1,
 498                                                 /* (' */ "')" );
 499
 500                         ldap_pvt_str2upper( &bsi->flt_where.bb_val.bv_val[ start ] );
 501
 502                 } else {
 503                         backsql_strfcat( &bsi->flt_where, "cblbl",
 504                                         '(',
 505                                         &at->sel_expr,
 506                                         (ber_len_t)sizeof( "='" ) - 1, "='",
 507                                         filter_value,
 508                                         (ber_len_t)sizeof( /* (' */ "')" ) - 1,
 509                                                 /* (' */ "')" );
 510                 }
 511                 break;
 512
 513         case LDAP_FILTER_GE:
 514                 /*
 515                  * FIXME: should we uppercase the operands?
 516                  */
 517                 backsql_strfcat( &bsi->flt_where, "cblbc",
 518                                 '(' /* ) */ ,
 519                                 &at->sel_expr,
 520                                 (ber_len_t)sizeof( ">=" ) - 1, ">=",
 521                                 &f->f_av_value,
 522                                 /* ( */ ')' );
 523                 break;
 524
 525         case LDAP_FILTER_LE:
 526                 /*
 527                  * FIXME: should we uppercase the operands?
 528                  */
 529                 backsql_strfcat( &bsi->flt_where, "cblbc",
 530                                 '(' /* ) */ ,
 531                                 &at->sel_expr,
 532                                 (ber_len_t)sizeof( "<=" ) - 1, "<=",
 533                                 &f->f_av_value,
 534                                 /* ( */ ')' );
 535                 break;
 536
 537         case LDAP_FILTER_PRESENT:
 538                 backsql_strfcat( &bsi->flt_where, "lbl",
 539                                 (ber_len_t)sizeof( "NOT (" ) - 1, "NOT (",
 540                                 &at->sel_expr,
 541                                 (ber_len_t)sizeof( " IS NULL)" ) - 1, " IS NULL)" );
 542                 break;
 543
 544         case LDAP_FILTER_SUBSTRINGS:
 545                 backsql_process_sub_filter( bsi, f );
 546                 break;
 547
 548         case LDAP_FILTER_APPROX:
 549                 /* we do our best */
 550
 551                 /*
 552                  * maybe we should check type of at->sel_expr here somehow,
 553                  * to know whether upper_func is applicable, but for now
 554                  * upper_func stuff is made for Oracle, where UPPER is
 555                  * safely applicable to NUMBER etc.
 556                  */
 557                 if ( bi->upper_func.bv_val ) {
 558                         size_t  start;
 559
 560                         if ( at->sel_expr_u.bv_val ) {
 561                                 backsql_strfcat( &bsi->flt_where, "cbl",
 562                                                 '(',
 563                                                 &at->sel_expr_u,
 564                                                 (ber_len_t)sizeof( " LIKE '%" ) - 1,
 565                                                         " LIKE '%" );
 566                         } else {
 567                                 backsql_strfcat( &bsi->flt_where, "cbcbl",
 568                                                 '(' /* ) */ ,
 569                                                 &bi->upper_func,
 570                                                 '(' /* ) */ ,
 571                                                 &at->sel_expr,
 572                                                 (ber_len_t)sizeof( /* ( */ ") LIKE '%" ) - 1,
 573                                                         /* ( */ ") LIKE '%" );
 574                         }
 575
 576                         start = bsi->flt_where.bb_val.bv_len;
 577
 578                         backsql_strfcat( &bsi->flt_where, "bl",
 579                                         &f->f_av_value,
 580                                         (ber_len_t)sizeof( /* (' */ "%')" ) - 1,
 581                                                 /* (' */ "%')" );
 582
 583                         ldap_pvt_str2upper( &bsi->flt_where.bb_val.bv_val[ start ] );
 584
 585                 } else {
 586                         backsql_strfcat( &bsi->flt_where, "cblbl",
 587                                         '(',
 588                                         &at->sel_expr,
 589                                         (ber_len_t)sizeof( " LIKE '%" ) - 1,
 590                                                 " LIKE '%",
 591                                         &f->f_av_value,
 592                                         (ber_len_t)sizeof( /* (' */ "%')" ) - 1,
 593                                                 /* (' */ "%')" );
 594                 }
 595                 break;
 596
 597         default:
 598                 /* unhandled filter type; should not happen */
 599                 assert( 0 );
 600                 backsql_strfcat( &bsi->flt_where, "l",
 601                                 (ber_len_t)sizeof( "1=1" ) - 1, "1=1" );
 602                 break;
 603
 604         }
 605
 606 done:
 607         if ( oc_attr.sel_expr.bv_val != NULL ) {
 608                 free( oc_attr.sel_expr.bv_val );
 609         }
 610
 611         Debug( LDAP_DEBUG_TRACE, "<==backsql_process_filter()\n", 0, 0, 0 );
 612         return 1;
 613
 614 impossible:
 615         if ( oc_attr.sel_expr.bv_val != NULL ) {
 616                 free( oc_attr.sel_expr.bv_val );
 617         }
 618         Debug( LDAP_DEBUG_TRACE, "<==backsql_process_filter() returns -1\n",
 619                         0, 0, 0 );
 620         return -1;
 621 }
 622
 623 static int
 624 backsql_srch_query( backsql_srch_info *bsi, struct berval *query )
 625 {
 626         backsql_info    *bi = (backsql_info *)bsi->op->o_bd->be_private;
 627         int             rc;
 628
 629         assert( query );
 630         query->bv_val = NULL;
 631         query->bv_len = 0;
 632
 633         Debug( LDAP_DEBUG_TRACE, "==>backsql_srch_query()\n", 0, 0, 0 );
 634         bsi->sel.bb_val.bv_val = NULL;
 635         bsi->sel.bb_val.bv_len = 0;
 636         bsi->sel.bb_len = 0;
 637         bsi->from.bb_val.bv_val = NULL;
 638         bsi->from.bb_val.bv_len = 0;
 639         bsi->from.bb_len = 0;
 640         bsi->join_where.bb_val.bv_val = NULL;
 641         bsi->join_where.bb_val.bv_len = 0;
 642         bsi->join_where.bb_len = 0;
 643         bsi->flt_where.bb_val.bv_val = NULL;
 644         bsi->flt_where.bb_val.bv_len = 0;
 645         bsi->flt_where.bb_len = 0;
 646
 647 #if 0
 648         /*
 649          * FIXME: this query has been split in case a string cast function
 650          * is defined; more sophisticated (pattern based) function should
 651          * be used
 652          */
 653         backsql_strcat( &bsi->sel,
 654                         "SELECT DISTINCT ldap_entries.id,",
 655                         bsi->oc->keytbl.bv_val, ".", bsi->oc->keycol.bv_val,
 656                         ",'", bsi->oc->name.bv_val, "' AS objectClass",
 657                         ",ldap_entries.dn AS dn", NULL );
 658 #endif
 659
 660         backsql_strfcat( &bsi->sel, "lbcbc",
 661                         (ber_len_t)sizeof( "SELECT DISTINCT ldap_entries.id," ) - 1,
 662                                 "SELECT DISTINCT ldap_entries.id,",
 663                         &bsi->oc->keytbl,
 664                         '.',
 665                         &bsi->oc->keycol,
 666                         ',' );
 667
 668         if ( bi->strcast_func.bv_val ) {
 669                 backsql_strfcat( &bsi->sel, "blbl",
 670                                 &bi->strcast_func,
 671                                 (ber_len_t)sizeof( "('" /* ') */ ) - 1,
 672                                         "('" /* ') */ ,
 673                                 &bsi->oc->oc->soc_cname,
 674                                 (ber_len_t)sizeof( /* (' */ "')" ) - 1,
 675                                         /* (' */ "')" );
 676         } else {
 677                 backsql_strfcat( &bsi->sel, "cbc",
 678                                 '\'',
 679                                 &bsi->oc->oc->soc_cname,
 680                                 '\'' );
 681         }
 682         backsql_strfcat( &bsi->sel, "l",
 683                         (ber_len_t)sizeof( " AS objectClass,ldap_entries.dn AS dn" ) - 1,
 684                         " AS objectClass,ldap_entries.dn AS dn" );
 685
 686         backsql_strfcat( &bsi->from, "lb",
 687                         (ber_len_t)sizeof( " FROM ldap_entries," ) - 1,
 688                                 " FROM ldap_entries,",
 689                         &bsi->oc->keytbl );
 690
 691         backsql_strfcat( &bsi->join_where, "lbcbl",
 692                         (ber_len_t)sizeof( " WHERE " ) - 1, " WHERE ",
 693                         &bsi->oc->keytbl,
 694                         '.',
 695                         &bsi->oc->keycol,
 696                         (ber_len_t)sizeof( "=ldap_entries.keyval AND ldap_entries.oc_map_id=? AND " ) - 1,
 697                                 "=ldap_entries.keyval AND ldap_entries.oc_map_id=? AND " );
 698
 699         switch ( bsi->scope ) {
 700         case LDAP_SCOPE_BASE:
 701                 if ( bi->upper_func.bv_val ) {
 702                         backsql_strfcat( &bsi->join_where, "blbcb",
 703                                         &bi->upper_func,
 704                                         (ber_len_t)sizeof( "(ldap_entries.dn)=" ) - 1,
 705                                                 "(ldap_entries.dn)=",
 706                                         &bi->upper_func_open,
 707                                         '?',
 708                                         &bi->upper_func_close );
 709                 } else {
 710                         backsql_strfcat( &bsi->join_where, "l",
 711                                         (ber_len_t)sizeof( "ldap_entries.dn=?" ) - 1,
 712                                                 "ldap_entries.dn=?" );
 713                 }
 714                 break;
 715
 716         case LDAP_SCOPE_ONELEVEL:
 717                 backsql_strfcat( &bsi->join_where, "l",
 718                                 (ber_len_t)sizeof( "ldap_entries.parent=?" ) - 1,
 719                                         "ldap_entries.parent=?" );
 720                 break;
 721
 722         case LDAP_SCOPE_SUBTREE:
 723                 if ( bi->upper_func.bv_val ) {
 724                         backsql_strfcat( &bsi->join_where, "blbcb",
 725                                         &bi->upper_func,
 726                                         (ber_len_t)sizeof( "(ldap_entries.dn) LIKE " ) - 1,
 727                                                 "(ldap_entries.dn) LIKE ",
 728                                         &bi->upper_func_open,
 729                                         '?',
 730                                         &bi->upper_func_close );
 731                 } else {
 732                         backsql_strfcat( &bsi->join_where, "l",
 733                                         (ber_len_t)sizeof( "ldap_entries.dn LIKE ?" ) - 1,
 734                                                 "ldap_entries.dn LIKE ?" );
 735                 }
 736
 737 #if 0
 738                 backsql_strfcat( &bsi->join_where, "b",
 739                                 &bi->subtree_cond );
 740 #endif
 741                 break;
 742
 743         default:
 744                 assert( 0 );
 745         }
 746
 747         rc = backsql_process_filter( bsi, bsi->filter );
 748         if ( rc > 0 ) {
 749                 struct berbuf   bb = BB_NULL;
 750
 751                 backsql_strfcat( &bb, "bbblb",
 752                                 &bsi->sel.bb_val,
 753                                 &bsi->from.bb_val,
 754                                 &bsi->join_where.bb_val,
 755                                 (ber_len_t)sizeof( " AND " ) - 1, " AND ",
 756                                 &bsi->flt_where.bb_val );
 757
 758                 *query = bb.bb_val;
 759
 760         } else if ( rc < 0 ) {
 761                 /*
 762                  * Indicates that there's no possible way the filter matches
 763                  * anything.  No need to issue the query
 764                  */
 765                 Debug( LDAP_DEBUG_TRACE,
 766                         "<==backsql_srch_query() returns NULL\n", 0, 0, 0 );
 767                 free( query->bv_val );
 768                 query->bv_val = NULL;
 769         }
 770
 771         free( bsi->sel.bb_val.bv_val );
 772         bsi->sel.bb_val.bv_len = 0;
 773         bsi->sel.bb_len = 0;
 774         free( bsi->from.bb_val.bv_val );
 775         bsi->from.bb_val.bv_len = 0;
 776         bsi->from.bb_len = 0;
 777         free( bsi->join_where.bb_val.bv_val );
 778         bsi->join_where.bb_val.bv_len = 0;
 779         bsi->join_where.bb_len = 0;
 780         free( bsi->flt_where.bb_val.bv_val );
 781         bsi->flt_where.bb_val.bv_len = 0;
 782         bsi->flt_where.bb_len = 0;
 783
 784         Debug( LDAP_DEBUG_TRACE, "<==backsql_srch_query()\n", 0, 0, 0 );
 785
 786         return ( query->bv_val == NULL ? 1 : 0 );
 787 }
 788
 789 static int
 790 backsql_oc_get_candidates( void *v_oc, void *v_bsi )
 791 {
 792         backsql_oc_map_rec      *oc = v_oc;
 793         backsql_srch_info       *bsi = v_bsi;
 794         backsql_info            *bi = (backsql_info *)bsi->op->o_bd->be_private;
 795         struct berval           query;
 796         SQLHSTMT                sth;
 797         RETCODE                 rc;
 798         backsql_entryID         base_id, *c_id;
 799         int                     res;
 800         BACKSQL_ROW_NTS         row;
 801         int                     i;
 802         int                     j;
 803
 804         Debug(  LDAP_DEBUG_TRACE, "==>backsql_oc_get_candidates(): oc='%s'\n",
 805                         BACKSQL_OC_NAME( oc ), 0, 0 );
 806
 807         if ( bsi->n_candidates == -1 ) {
 808                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 809                         "unchecked limit has been overcome\n", 0, 0, 0 );
 810                 /* should never get here */
 811                 assert( 0 );
 812                 bsi->status = LDAP_OTHER;
 813                 return BACKSQL_STOP;
 814         }
 815
 816         bsi->oc = oc;
 817         if ( backsql_srch_query( bsi, &query ) ) {
 818                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 819                         "could not construct query for objectclass\n",
 820                         0, 0, 0 );
 821                 bsi->status = LDAP_OTHER;
 822                 return BACKSQL_CONTINUE;
 823         }
 824
 825         Debug( LDAP_DEBUG_TRACE, "Constructed query: %s\n",
 826                         query.bv_val, 0, 0 );
 827
 828         rc = backsql_Prepare( bsi->dbh, &sth, query.bv_val, 0 );
 829         free( query.bv_val );
 830         if ( rc != SQL_SUCCESS ) {
 831                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 832                         "error preparing query\n", 0, 0, 0 );
 833                 backsql_PrintErrors( bi->db_env, bsi->dbh, sth, rc );
 834                 bsi->status = LDAP_OTHER;
 835                 return BACKSQL_CONTINUE;
 836         }
 837
 838         Debug( LDAP_DEBUG_TRACE, "id: '%ld'\n", bsi->oc->id, 0, 0 );
 839
 840         if ( backsql_BindParamID( sth, 1, &bsi->oc->id ) != SQL_SUCCESS ) {
 841                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 842                         "error binding objectclass id parameter\n", 0, 0, 0 );
 843                 bsi->status = LDAP_OTHER;
 844                 return BACKSQL_CONTINUE;
 845         }
 846
 847         switch ( bsi->scope ) {
 848         case LDAP_SCOPE_BASE:
 849                 Debug( LDAP_DEBUG_TRACE, "(base)dn: '%s'\n",
 850                                 bsi->base_dn->bv_val, 0, 0 );
 851
 852                 rc = backsql_BindParamStr( sth, 2, bsi->base_dn->bv_val,
 853                                 BACKSQL_MAX_DN_LEN );
 854                 if ( rc != SQL_SUCCESS ) {
 855                         Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 856                                 "error binding base_dn parameter\n", 0, 0, 0 );
 857                         backsql_PrintErrors( bi->db_env, bsi->dbh,
 858                                         sth, rc );
 859                         bsi->status = LDAP_OTHER;
 860                         return BACKSQL_CONTINUE;
 861                 }
 862                 break;
 863
 864         case LDAP_SCOPE_SUBTREE: {
 865
 866                 /*
 867                  * + 1 because we need room for '%'; this makes a subtree
 868                  * search for a DN BACKSQL_MAX_DN_LEN long legal
 869                  * if it returns that DN only
 870                  */
 871                 char            temp_base_dn[ BACKSQL_MAX_DN_LEN + 1 + 1 ];
 872
 873                 /*
 874                  * We do not accept DNs longer than BACKSQL_MAX_DN_LEN;
 875                  * however this should be handled earlier
 876                  */
 877                 assert( bsi->base_dn->bv_len <= BACKSQL_MAX_DN_LEN );
 878
 879                 /*
 880                  * Sets the parameters for the SQL built earlier
 881                  * NOTE that all the databases could actually use
 882                  * the TimesTen version, which would be cleaner
 883                  * and would also eliminate the need for the
 884                  * subtree_cond line in the configuration file.
 885                  * For now, I'm leaving it the way it is,
 886                  * so non-TimesTen databases use the original code.
 887                  * But at some point this should get cleaned up.
 888                  *
 889                  * If "dn" is being used, do a suffix search.
 890                  * If "dn_ru" is being used, do a prefix search.
 891                  */
 892                 if ( BACKSQL_HAS_LDAPINFO_DN_RU( bi ) ) {
 893                         temp_base_dn[ 0 ] = '\0';
 894                         for ( i = 0, j = bsi->base_dn->bv_len - 1;
 895                                         j >= 0; i++, j--) {
 896                                 temp_base_dn[ i ] = bsi->base_dn->bv_val[ j ];
 897                         }
 898                         temp_base_dn[ i ] = '%';
 899                         temp_base_dn[ i + 1 ] = '\0';
 900
 901                 } else {
 902                         temp_base_dn[ 0 ] = '%';
 903                         AC_MEMCPY( &temp_base_dn[ 1 ], bsi->base_dn->bv_val,
 904                                 bsi->base_dn->bv_len + 1 );
 905                 }
 906                 ldap_pvt_str2upper( temp_base_dn );
 907
 908                 Debug( LDAP_DEBUG_TRACE, "(sub)dn: '%s'\n", temp_base_dn,
 909                                 0, 0 );
 910
 911                 rc = backsql_BindParamStr( sth, 2, temp_base_dn,
 912                                 BACKSQL_MAX_DN_LEN );
 913                 if ( rc != SQL_SUCCESS ) {
 914                         Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 915                                 "error binding base_dn parameter (2)\n",
 916                                 0, 0, 0 );
 917                         backsql_PrintErrors( bi->db_env, bsi->dbh,
 918                                         sth, rc );
 919                         bsi->status = LDAP_OTHER;
 920                         return BACKSQL_CONTINUE;
 921                 }
 922                 break;
 923         }
 924
 925         case LDAP_SCOPE_ONELEVEL:
 926                 res = backsql_dn2id( 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                 Debug( LDAP_DEBUG_TRACE, "(one)id: '%s'\n", base_id.id,
 938                                 0, 0 );
 939
 940                 rc = backsql_BindParamID( sth, 2, &base_id.id );
 941                 backsql_free_entryID( &base_id, 0 );
 942                 if ( rc != SQL_SUCCESS ) {
 943                         Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 944                                 "error binding base id parameter\n", 0, 0, 0 );
 945                         bsi->status = LDAP_OTHER;
 946                         return BACKSQL_CONTINUE;
 947                 }
 948                 break;
 949         }
 950
 951         rc = SQLExecute( sth );
 952         if ( !BACKSQL_SUCCESS( rc ) ) {
 953                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 954                         "error executing query\n", 0, 0, 0 );
 955                 backsql_PrintErrors( bi->db_env, bsi->dbh, sth, rc );
 956                 SQLFreeStmt( sth, SQL_DROP );
 957                 bsi->status = LDAP_OTHER;
 958                 return BACKSQL_CONTINUE;
 959         }
 960
 961         backsql_BindRowAsStrings( sth, &row );
 962         rc = SQLFetch( sth );
 963         for ( ; BACKSQL_SUCCESS( rc ); rc = SQLFetch( sth ) ) {
 964                 c_id = (backsql_entryID *)ch_calloc( 1,
 965                                 sizeof( backsql_entryID ) );
 966                 c_id->id = strtol( row.cols[ 0 ], NULL, 0 );
 967                 c_id->keyval = strtol( row.cols[ 1 ], NULL, 0 );
 968                 c_id->oc_id = bsi->oc->id;
 969                 ber_str2bv( row.cols[ 3 ], 0, 1, &c_id->dn );
 970                 c_id->next = bsi->id_list;
 971                 bsi->id_list = c_id;
 972                 bsi->n_candidates--;
 973
 974                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
 975                         "added entry id=%ld, keyval=%ld dn='%s'\n",
 976                         c_id->id, c_id->keyval, row.cols[ 3 ] );
 977
 978                 if ( bsi->n_candidates == -1 ) {
 979                         break;
 980                 }
 981         }
 982         backsql_FreeRow( &row );
 983         SQLFreeStmt( sth, SQL_DROP );
 984
 985         Debug( LDAP_DEBUG_TRACE, "<==backsql_oc_get_candidates()\n", 0, 0, 0 );
 986
 987         return ( bsi->n_candidates == -1 ? BACKSQL_STOP : BACKSQL_CONTINUE );
 988 }
 989
 990 int
 991 backsql_search( Operation *op, SlapReply *rs )
 992 {
 993         backsql_info            *bi = (backsql_info *)op->o_bd->be_private;
 994         SQLHDBC                 dbh;
 995         int                     sres;
 996         Entry                   *entry, *res;
 997         int                     manageDSAit;
 998         time_t                  stoptime = 0;
 999         backsql_srch_info       srch_info;
1000         backsql_entryID         *eid = NULL;
1001         struct slap_limits_set  *limit = NULL;
1002         int                     isroot = 0;
1003
1004         manageDSAit = get_manageDSAit( op );
1005
1006         Debug( LDAP_DEBUG_TRACE, "==>backsql_search(): "
1007                 "base='%s', filter='%s', scope=%d,",
1008                 op->o_req_ndn.bv_val,
1009                 op->oq_search.rs_filterstr.bv_val,
1010                 op->oq_search.rs_scope );
1011         Debug( LDAP_DEBUG_TRACE, " deref=%d, attrsonly=%d, "
1012                 "attributes to load: %s\n",
1013                 op->oq_search.rs_deref,
1014                 op->oq_search.rs_attrsonly,
1015                 op->oq_search.rs_attrs == NULL ? "all" : "custom list" );
1016
1017         if ( op->o_req_ndn.bv_len > BACKSQL_MAX_DN_LEN ) {
1018                 Debug( LDAP_DEBUG_TRACE, "backsql_search(): "
1019                         "search base length (%ld) exceeds max length (%ld)\n",
1020                         op->o_req_ndn.bv_len, BACKSQL_MAX_DN_LEN, 0 );
1021                 /*
1022                  * FIXME: a LDAP_NO_SUCH_OBJECT could be appropriate
1023                  * since it is impossible that such a long DN exists
1024                  * in the backend
1025                  */
1026                 rs->sr_err = LDAP_ADMINLIMIT_EXCEEDED;
1027                 send_ldap_result( op, rs );
1028                 return 1;
1029         }
1030
1031         sres = backsql_get_db_conn( op, &dbh );
1032         if ( sres != LDAP_SUCCESS ) {
1033                 Debug( LDAP_DEBUG_TRACE, "backsql_search(): "
1034                         "could not get connection handle - exiting\n",
1035                         0, 0, 0 );
1036                 rs->sr_err = sres;
1037                 rs->sr_text = sres == LDAP_OTHER ?  "SQL-backend error" : NULL;
1038                 send_ldap_result( op, rs );
1039                 return 1;
1040         }
1041
1042         /* if not root, get appropriate limits */
1043         if ( be_isroot( op->o_bd, &op->o_ndn ) ) {
1044                 isroot = 1;
1045         } else {
1046                 ( void ) get_limits( op->o_bd, &op->o_ndn, &limit );
1047         }
1048
1049         /* The time/size limits come first because they require very little
1050          * effort, so there's no chance the candidates are selected and then
1051          * the request is not honored only because of time/size constraints */
1052
1053         /* if no time limit requested, use soft limit (unless root!) */
1054         if ( isroot ) {
1055                 if ( op->oq_search.rs_tlimit == 0 ) {
1056                         op->oq_search.rs_tlimit = -1;   /* allow root to set no limit */
1057                 }
1058
1059                 if ( op->oq_search.rs_slimit == 0 ) {
1060                         op->oq_search.rs_slimit = -1;
1061                 }
1062
1063         } else {
1064                 /* if no limit is required, use soft limit */
1065                 if ( op->oq_search.rs_tlimit <= 0 ) {
1066                         op->oq_search.rs_tlimit = limit->lms_t_soft;
1067
1068                 /* if requested limit higher than hard limit, abort */
1069                 } else if ( op->oq_search.rs_tlimit > limit->lms_t_hard ) {
1070                         /* no hard limit means use soft instead */
1071                         if ( limit->lms_t_hard == 0
1072                                         && limit->lms_t_soft > -1
1073                                         && op->oq_search.rs_tlimit > limit->lms_t_soft ) {
1074                                 op->oq_search.rs_tlimit = limit->lms_t_soft;
1075
1076                         /* positive hard limit means abort */
1077                         } else if ( limit->lms_t_hard > 0 ) {
1078                                 rs->sr_err = LDAP_ADMINLIMIT_EXCEEDED;
1079                                 send_ldap_result( op, rs );
1080                                 return 0;
1081                         }
1082
1083                         /* negative hard limit means no limit */
1084                 }
1085
1086                 /* if no limit is required, use soft limit */
1087                 if ( op->oq_search.rs_slimit <= 0 ) {
1088                         op->oq_search.rs_slimit = limit->lms_s_soft;
1089
1090                 /* if requested limit higher than hard limit, abort */
1091                 } else if ( op->oq_search.rs_slimit > limit->lms_s_hard ) {
1092                         /* no hard limit means use soft instead */
1093                         if ( limit->lms_s_hard == 0
1094                                         && limit->lms_s_soft > -1
1095                                         && op->oq_search.rs_slimit > limit->lms_s_soft ) {
1096                                 op->oq_search.rs_slimit = limit->lms_s_soft;
1097
1098                         /* positive hard limit means abort */
1099                         } else if ( limit->lms_s_hard > 0 ) {
1100                                 rs->sr_err = LDAP_ADMINLIMIT_EXCEEDED;
1101                                 send_ldap_result( op, rs );
1102                                 return 0;
1103                         }
1104
1105                         /* negative hard limit means no limit */
1106                 }
1107         }
1108
1109         /* compute it anyway; root does not use it */
1110         stoptime = op->o_time + op->oq_search.rs_tlimit;
1111
1112         backsql_init_search( &srch_info, &op->o_req_dn,
1113                         op->oq_search.rs_scope,
1114                         op->oq_search.rs_slimit, op->oq_search.rs_tlimit,
1115                         stoptime, op->oq_search.rs_filter,
1116                         dbh, op, op->oq_search.rs_attrs );
1117
1118         /*
1119          * for each objectclass we try to construct query which gets IDs
1120          * of entries matching LDAP query filter and scope (or at least
1121          * candidates), and get the IDs
1122          */
1123         srch_info.n_candidates = ( isroot ? -2 : limit->lms_s_unchecked == -1
1124                         ? -2 : limit->lms_s_unchecked );
1125         avl_apply( bi->oc_by_oc, backsql_oc_get_candidates,
1126                         &srch_info, BACKSQL_STOP, AVL_INORDER );
1127         if ( !isroot && limit->lms_s_unchecked != -1 ) {
1128                 if ( srch_info.n_candidates == -1 ) {
1129                         rs->sr_err = LDAP_ADMINLIMIT_EXCEEDED;
1130                         send_ldap_result( op, rs );
1131                         goto done;
1132                 }
1133         }
1134
1135         /*
1136          * now we load candidate entries (only those attributes
1137          * mentioned in attrs and filter), test it against full filter
1138          * and then send to client
1139          */
1140         for ( eid = srch_info.id_list; eid != NULL;
1141                         eid = backsql_free_entryID( eid, 1 ) ) {
1142                 Attribute       *hasSubordinate = NULL,
1143                                 *a = NULL;
1144
1145                 /* check for abandon */
1146                 if ( op->o_abandon ) {
1147                         break;
1148                 }
1149
1150                 /* check time limit */
1151                 if ( op->oq_search.rs_tlimit != -1 && slap_get_time() > stoptime ) {
1152                         rs->sr_err = LDAP_TIMELIMIT_EXCEEDED;
1153                         rs->sr_ctrls = NULL;
1154                         rs->sr_ref = rs->sr_v2ref;
1155                         rs->sr_err = (rs->sr_v2ref == NULL) ? LDAP_SUCCESS
1156                                 : LDAP_REFERRAL;
1157                         send_ldap_result( op, rs );
1158                         goto end_of_search;
1159                 }
1160
1161                 Debug(LDAP_DEBUG_TRACE, "backsql_search(): loading data "
1162                         "for entry id=%ld, oc_id=%ld, keyval=%ld\n",
1163                         eid->id, eid->oc_id, eid->keyval );
1164
1165                 entry = (Entry *)ch_calloc( sizeof( Entry ), 1 );
1166                 res = backsql_id2entry( &srch_info, entry, eid );
1167                 if ( res == NULL ) {
1168                         Debug( LDAP_DEBUG_TRACE, "backsql_search(): "
1169                                 "error in backsql_id2entry() "
1170                                 "- skipping entry\n", 0, 0, 0 );
1171                         continue;
1172                 }
1173
1174                 if ( !manageDSAit &&
1175                                 op->oq_search.rs_scope != LDAP_SCOPE_BASE &&
1176                                 is_entry_referral( entry ) ) {
1177                         BerVarray refs;
1178                         struct berval matched_dn;
1179
1180                         ber_dupbv( &matched_dn, &entry->e_name );
1181                         refs = get_entry_referrals( op, entry );
1182                         if ( refs ) {
1183                                 rs->sr_ref = referral_rewrite( refs,
1184                                                 &matched_dn, &op->o_req_dn,
1185                                                 op->oq_search.rs_scope );
1186                                 ber_bvarray_free( refs );
1187                         }
1188
1189                         if (!rs->sr_ref) {
1190                                 rs->sr_text = "bad_referral object";
1191                         }
1192
1193                         rs->sr_err = LDAP_REFERRAL;
1194                         rs->sr_matched = matched_dn.bv_val;
1195                         send_search_reference( op, rs );
1196
1197                         ber_bvarray_free( rs->sr_ref );
1198                         rs->sr_ref = NULL;
1199                         ber_memfree( matched_dn.bv_val );
1200                         rs->sr_matched = NULL;
1201
1202                         continue;
1203                 }
1204
1205                 /*
1206                  * We use this flag since we need to parse the filter
1207                  * anyway; we should have used the frontend API function
1208                  * filter_has_subordinates()
1209                  */
1210                 if ( srch_info.bsi_flags & BSQL_SF_FILTER_HASSUBORDINATE ) {
1211                         int             rc;
1212
1213                         rc = backsql_has_children( bi, dbh, &entry->e_nname );
1214
1215                         switch( rc ) {
1216                         case LDAP_COMPARE_TRUE:
1217                         case LDAP_COMPARE_FALSE:
1218                                 hasSubordinate = slap_operational_hasSubordinate( rc == LDAP_COMPARE_TRUE );
1219                                 if ( hasSubordinate != NULL ) {
1220                                         for ( a = entry->e_attrs;
1221                                                         a && a->a_next;
1222                                                         a = a->a_next );
1223
1224                                         a->a_next = hasSubordinate;
1225                                 }
1226                                 rc = 0;
1227                                 break;
1228
1229                         default:
1230                                 Debug(LDAP_DEBUG_TRACE,
1231                                         "backsql_search(): "
1232                                         "has_children failed( %d)\n",
1233                                         rc, 0, 0 );
1234                                 rc = 1;
1235                                 break;
1236                         }
1237
1238                         if ( rc ) {
1239                                 continue;
1240                         }
1241                 }
1242
1243                 if ( test_filter( op, entry, op->oq_search.rs_filter )
1244                                 == LDAP_COMPARE_TRUE ) {
1245                         if ( hasSubordinate && !( srch_info.bsi_flags & BSQL_SF_ALL_OPER )
1246                                         && !ad_inlist( slap_schema.si_ad_hasSubordinates, op->oq_search.rs_attrs ) ) {
1247                                 a->a_next = NULL;
1248                                 attr_free( hasSubordinate );
1249                                 hasSubordinate = NULL;
1250                         }
1251
1252 #if 0   /* noop is masked SLAP_CTRL_UPDATE */
1253                         if ( op->o_noop ) {
1254                                 sres = 0;
1255                         } else {
1256 #endif
1257                                 rs->sr_attrs = op->oq_search.rs_attrs;
1258                                 rs->sr_entry = entry;
1259                                 sres = send_search_entry( op, rs );
1260                                 rs->sr_entry = NULL;
1261                                 rs->sr_attrs = NULL;
1262 #if 0
1263                         }
1264 #endif
1265
1266                         switch ( sres ) {
1267                         case 0:
1268                                 break;
1269
1270                         case -1:
1271                                 Debug( LDAP_DEBUG_TRACE, "backsql_search(): "
1272                                         "connection lost\n", 0, 0, 0 );
1273                                 goto end_of_search;
1274
1275                         default:
1276                                 /*
1277                                  * FIXME: send_search_entry failed;
1278                                  * better stop
1279                                  */
1280                                 break;
1281                         }
1282                 }
1283                 entry_free( entry );
1284
1285                 if ( op->oq_search.rs_slimit != -1
1286                                 && rs->sr_nentries >= op->oq_search.rs_slimit ) {
1287                         rs->sr_err = LDAP_SIZELIMIT_EXCEEDED;
1288                         send_ldap_result( op, rs );
1289                         goto end_of_search;
1290                 }
1291         }
1292
1293 end_of_search:;
1294
1295         if ( rs->sr_nentries > 0 ) {
1296                 rs->sr_ref = rs->sr_v2ref;
1297                 rs->sr_err = (rs->sr_v2ref == NULL) ? LDAP_SUCCESS
1298                         : LDAP_REFERRAL;
1299         } else {
1300                 rs->sr_err = srch_info.status;
1301         }
1302         send_ldap_result( op, rs );
1303
1304         if ( rs->sr_v2ref ) {
1305                 ber_bvarray_free( rs->sr_v2ref );
1306                 rs->sr_v2ref = NULL;
1307         }
1308
1309 done:;
1310         ch_free( srch_info.attrs );
1311
1312         Debug( LDAP_DEBUG_TRACE, "<==backsql_search()\n", 0, 0, 0 );
1313         return 0;
1314 }
1315
1316 #endif /* SLAPD_SQL */
1317