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

   1 /* $OpenLDAP$ */
   2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   3  *
   4  * Copyright 1999-2017 The OpenLDAP Foundation.
   5  * Portions Copyright 1999 Dmitry Kovalev.
   6  * Portions Copyright 2002 Pierangelo Masarati.
   7  * Portions Copyright 2004 Mark Adamson.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted only as authorized by the OpenLDAP
  12  * Public License.
  13  *
  14  * A copy of this license is available in the file LICENSE in the
  15  * top-level directory of the distribution or, alternatively, at
  16  * <http://www.OpenLDAP.org/license.html>.
  17  */
  18 /* ACKNOWLEDGEMENTS:
  19  * This work was initially developed by Dmitry Kovalev for inclusion
  20  * by OpenLDAP Software.  Additional significant contributors include
  21  * Pierangelo Masarati and Mark Adamson.
  22  */
  23
  24 #include "portable.h"
  25
  26 #include <stdio.h>
  27 #include <sys/types.h>
  28 #include "ac/string.h"
  29 #include "ac/ctype.h"
  30
  31 #include "lutil.h"
  32 #include "slap.h"
  33 #include "proto-sql.h"
  34
  35 static int backsql_process_filter( backsql_srch_info *bsi, Filter *f );
  36 static int backsql_process_filter_eq( backsql_srch_info *bsi,
  37                 backsql_at_map_rec *at,
  38                 int casefold, struct berval *filter_value );
  39 static int backsql_process_filter_like( backsql_srch_info *bsi,
  40                 backsql_at_map_rec *at,
  41                 int casefold, struct berval *filter_value );
  42 static int backsql_process_filter_attr( backsql_srch_info *bsi, Filter *f,
  43                 backsql_at_map_rec *at );
  44
  45 /* For LDAP_CONTROL_PAGEDRESULTS, a 32 bit cookie is available to keep track of
  46    the state of paged results. The ldap_entries.id and oc_map_id values of the
  47    last entry returned are used as the cookie, so 6 bits are used for the OC id
  48    and the other 26 for ldap_entries ID number. If your max(oc_map_id) is more
  49    than 63, you will need to steal more bits from ldap_entries ID number and
  50    put them into the OC ID part of the cookie. */
  51
  52 /* NOTE: not supported when BACKSQL_ARBITRARY_KEY is defined */
  53 #ifndef BACKSQL_ARBITRARY_KEY
  54 #define SQL_TO_PAGECOOKIE(id, oc) (((id) << 6 ) | ((oc) & 0x3F))
  55 #define PAGECOOKIE_TO_SQL_ID(pc) ((pc) >> 6)
  56 #define PAGECOOKIE_TO_SQL_OC(pc) ((pc) & 0x3F)
  57
  58 static int parse_paged_cookie( Operation *op, SlapReply *rs );
  59
  60 static void send_paged_response(
  61         Operation *op,
  62         SlapReply *rs,
  63         ID  *lastid );
  64 #endif /* ! BACKSQL_ARBITRARY_KEY */
  65
  66 static int
  67 backsql_attrlist_add( backsql_srch_info *bsi, AttributeDescription *ad )
  68 {
  69         int             n_attrs = 0;
  70         AttributeName   *an = NULL;
  71
  72         if ( bsi->bsi_attrs == NULL ) {
  73                 return 1;
  74         }
  75
  76         /*
  77          * clear the list (retrieve all attrs)
  78          */
  79         if ( ad == NULL ) {
  80                 bsi->bsi_op->o_tmpfree( bsi->bsi_attrs, bsi->bsi_op->o_tmpmemctx );
  81                 bsi->bsi_attrs = NULL;
  82                 bsi->bsi_flags |= BSQL_SF_ALL_ATTRS;
  83                 return 1;
  84         }
  85
  86         /* strip ';binary' */
  87         if ( slap_ad_is_binary( ad ) ) {
  88                 ad = ad->ad_type->sat_ad;
  89         }
  90
  91         for ( ; !BER_BVISNULL( &bsi->bsi_attrs[ n_attrs ].an_name ); n_attrs++ ) {
  92                 an = &bsi->bsi_attrs[ n_attrs ];
  93
  94                 Debug( LDAP_DEBUG_TRACE, "==>backsql_attrlist_add(): "
  95                         "attribute \"%s\" is in list\n",
  96                         an->an_name.bv_val, 0, 0 );
  97                 /*
  98                  * We can live with strcmp because the attribute
  99                  * list has been normalized before calling be_search
 100                  */
 101                 if ( !BACKSQL_NCMP( &an->an_name, &ad->ad_cname ) ) {
 102                         return 1;
 103                 }
 104         }
 105
 106         Debug( LDAP_DEBUG_TRACE, "==>backsql_attrlist_add(): "
 107                 "adding \"%s\" to list\n", ad->ad_cname.bv_val, 0, 0 );
 108
 109         an = (AttributeName *)bsi->bsi_op->o_tmprealloc( bsi->bsi_attrs,
 110                         sizeof( AttributeName ) * ( n_attrs + 2 ),
 111                         bsi->bsi_op->o_tmpmemctx );
 112         if ( an == NULL ) {
 113                 return -1;
 114         }
 115
 116         an[ n_attrs ].an_name = ad->ad_cname;
 117         an[ n_attrs ].an_desc = ad;
 118         BER_BVZERO( &an[ n_attrs + 1 ].an_name );
 119
 120         bsi->bsi_attrs = an;
 121
 122         return 1;
 123 }
 124
 125 /*
 126  * Initializes the search structure.
 127  *
 128  * If get_base_id != 0, the field bsi_base_id is filled
 129  * with the entryID of bsi_base_ndn; it must be freed
 130  * by backsql_free_entryID() when no longer required.
 131  *
 132  * NOTE: base must be normalized
 133  */
 134 int
 135 backsql_init_search(
 136         backsql_srch_info       *bsi,
 137         struct berval           *nbase,
 138         int                     scope,
 139         time_t                  stoptime,
 140         Filter                  *filter,
 141         SQLHDBC                 dbh,
 142         Operation               *op,
 143         SlapReply               *rs,
 144         AttributeName           *attrs,
 145         unsigned                flags )
 146 {
 147         backsql_info            *bi = (backsql_info *)op->o_bd->be_private;
 148         int                     rc = LDAP_SUCCESS;
 149
 150         bsi->bsi_base_ndn = nbase;
 151         bsi->bsi_use_subtree_shortcut = 0;
 152         BER_BVZERO( &bsi->bsi_base_id.eid_dn );
 153         BER_BVZERO( &bsi->bsi_base_id.eid_ndn );
 154         bsi->bsi_scope = scope;
 155         bsi->bsi_filter = filter;
 156         bsi->bsi_dbh = dbh;
 157         bsi->bsi_op = op;
 158         bsi->bsi_rs = rs;
 159         bsi->bsi_flags = BSQL_SF_NONE;
 160
 161         bsi->bsi_attrs = NULL;
 162
 163         if ( BACKSQL_FETCH_ALL_ATTRS( bi ) ) {
 164                 /*
 165                  * if requested, simply try to fetch all attributes
 166                  */
 167                 bsi->bsi_flags |= BSQL_SF_ALL_ATTRS;
 168
 169         } else {
 170                 if ( BACKSQL_FETCH_ALL_USERATTRS( bi ) ) {
 171                         bsi->bsi_flags |= BSQL_SF_ALL_USER;
 172
 173                 } else if ( BACKSQL_FETCH_ALL_OPATTRS( bi ) ) {
 174                         bsi->bsi_flags |= BSQL_SF_ALL_OPER;
 175                 }
 176
 177                 if ( attrs == NULL ) {
 178                         /* NULL means all user attributes */
 179                         bsi->bsi_flags |= BSQL_SF_ALL_USER;
 180
 181                 } else {
 182                         AttributeName   *p;
 183                         int             got_oc = 0;
 184
 185                         bsi->bsi_attrs = (AttributeName *)bsi->bsi_op->o_tmpalloc(
 186                                         sizeof( AttributeName ),
 187                                         bsi->bsi_op->o_tmpmemctx );
 188                         BER_BVZERO( &bsi->bsi_attrs[ 0 ].an_name );
 189
 190                         for ( p = attrs; !BER_BVISNULL( &p->an_name ); p++ ) {
 191                                 if ( BACKSQL_NCMP( &p->an_name, slap_bv_all_user_attrs ) == 0 ) {
 192                                         /* handle "*" */
 193                                         bsi->bsi_flags |= BSQL_SF_ALL_USER;
 194
 195                                         /* if all attrs are requested, there's
 196                                          * no need to continue */
 197                                         if ( BSQL_ISF_ALL_ATTRS( bsi ) ) {
 198                                                 bsi->bsi_op->o_tmpfree( bsi->bsi_attrs,
 199                                                                 bsi->bsi_op->o_tmpmemctx );
 200                                                 bsi->bsi_attrs = NULL;
 201                                                 break;
 202                                         }
 203                                         continue;
 204
 205                                 } else if ( BACKSQL_NCMP( &p->an_name, slap_bv_all_operational_attrs ) == 0 ) {
 206                                         /* handle "+" */
 207                                         bsi->bsi_flags |= BSQL_SF_ALL_OPER;
 208
 209                                         /* if all attrs are requested, there's
 210                                          * no need to continue */
 211                                         if ( BSQL_ISF_ALL_ATTRS( bsi ) ) {
 212                                                 bsi->bsi_op->o_tmpfree( bsi->bsi_attrs,
 213                                                                 bsi->bsi_op->o_tmpmemctx );
 214                                                 bsi->bsi_attrs = NULL;
 215                                                 break;
 216                                         }
 217                                         continue;
 218
 219                                 } else if ( BACKSQL_NCMP( &p->an_name, slap_bv_no_attrs ) == 0 ) {
 220                                         /* ignore "1.1" */
 221                                         continue;
 222
 223                                 } else if ( p->an_desc == slap_schema.si_ad_objectClass ) {
 224                                         got_oc = 1;
 225                                 }
 226
 227                                 backsql_attrlist_add( bsi, p->an_desc );
 228                         }
 229
 230                         if ( got_oc == 0 && !( bsi->bsi_flags & BSQL_SF_ALL_USER ) ) {
 231                                 /* add objectClass if not present,
 232                                  * because it is required to understand
 233                                  * if an entry is a referral, an alias
 234                                  * or so... */
 235                                 backsql_attrlist_add( bsi, slap_schema.si_ad_objectClass );
 236                         }
 237                 }
 238
 239                 if ( !BSQL_ISF_ALL_ATTRS( bsi ) && bi->sql_anlist ) {
 240                         AttributeName   *p;
 241
 242                         /* use hints if available */
 243                         for ( p = bi->sql_anlist; !BER_BVISNULL( &p->an_name ); p++ ) {
 244                                 if ( BACKSQL_NCMP( &p->an_name, slap_bv_all_user_attrs ) == 0 ) {
 245                                         /* handle "*" */
 246                                         bsi->bsi_flags |= BSQL_SF_ALL_USER;
 247
 248                                         /* if all attrs are requested, there's
 249                                          * no need to continue */
 250                                         if ( BSQL_ISF_ALL_ATTRS( bsi ) ) {
 251                                                 bsi->bsi_op->o_tmpfree( bsi->bsi_attrs,
 252                                                                 bsi->bsi_op->o_tmpmemctx );
 253                                                 bsi->bsi_attrs = NULL;
 254                                                 break;
 255                                         }
 256                                         continue;
 257
 258                                 } else if ( BACKSQL_NCMP( &p->an_name, slap_bv_all_operational_attrs ) == 0 ) {
 259                                         /* handle "+" */
 260                                         bsi->bsi_flags |= BSQL_SF_ALL_OPER;
 261
 262                                         /* if all attrs are requested, there's
 263                                          * no need to continue */
 264                                         if ( BSQL_ISF_ALL_ATTRS( bsi ) ) {
 265                                                 bsi->bsi_op->o_tmpfree( bsi->bsi_attrs,
 266                                                                 bsi->bsi_op->o_tmpmemctx );
 267                                                 bsi->bsi_attrs = NULL;
 268                                                 break;
 269                                         }
 270                                         continue;
 271                                 }
 272
 273                                 backsql_attrlist_add( bsi, p->an_desc );
 274                         }
 275
 276                 }
 277         }
 278
 279         bsi->bsi_id_list = NULL;
 280         bsi->bsi_id_listtail = &bsi->bsi_id_list;
 281         bsi->bsi_n_candidates = 0;
 282         bsi->bsi_stoptime = stoptime;
 283         BER_BVZERO( &bsi->bsi_sel.bb_val );
 284         bsi->bsi_sel.bb_len = 0;
 285         BER_BVZERO( &bsi->bsi_from.bb_val );
 286         bsi->bsi_from.bb_len = 0;
 287         BER_BVZERO( &bsi->bsi_join_where.bb_val );
 288         bsi->bsi_join_where.bb_len = 0;
 289         BER_BVZERO( &bsi->bsi_flt_where.bb_val );
 290         bsi->bsi_flt_where.bb_len = 0;
 291         bsi->bsi_filter_oc = NULL;
 292
 293         if ( BACKSQL_IS_GET_ID( flags ) ) {
 294                 int     matched = BACKSQL_IS_MATCHED( flags );
 295                 int     getentry = BACKSQL_IS_GET_ENTRY( flags );
 296                 int     gotit = 0;
 297
 298                 assert( op->o_bd->be_private != NULL );
 299
 300                 rc = backsql_dn2id( op, rs, dbh, nbase, &bsi->bsi_base_id,
 301                                 matched, 1 );
 302
 303                 /* the entry is collected either if requested for by getentry
 304                  * or if get noSuchObject and requested to climb the tree,
 305                  * so that a matchedDN or a referral can be returned */
 306                 if ( ( rc == LDAP_NO_SUCH_OBJECT && matched ) || getentry ) {
 307                         if ( !BER_BVISNULL( &bsi->bsi_base_id.eid_ndn ) ) {
 308                                 assert( bsi->bsi_e != NULL );
 309
 310                                 if ( dn_match( nbase, &bsi->bsi_base_id.eid_ndn ) )
 311                                 {
 312                                         gotit = 1;
 313                                 }
 314
 315                                 /*
 316                                  * let's see if it is a referral and, in case, get it
 317                                  */
 318                                 backsql_attrlist_add( bsi, slap_schema.si_ad_ref );
 319                                 rc = backsql_id2entry( bsi, &bsi->bsi_base_id );
 320                                 if ( rc == LDAP_SUCCESS ) {
 321                                         if ( is_entry_referral( bsi->bsi_e ) )
 322                                         {
 323                                                 BerVarray erefs = get_entry_referrals( op, bsi->bsi_e );
 324                                                 if ( erefs ) {
 325                                                         rc = rs->sr_err = LDAP_REFERRAL;
 326                                                         rs->sr_ref = referral_rewrite( erefs,
 327                                                                         &bsi->bsi_e->e_nname,
 328                                                                         &op->o_req_dn,
 329                                                                         scope );
 330                                                         ber_bvarray_free( erefs );
 331
 332                                                 } else {
 333                                                         rc = rs->sr_err = LDAP_OTHER;
 334                                                         rs->sr_text = "bad referral object";
 335                                                 }
 336
 337                                         } else if ( !gotit ) {
 338                                                 rc = rs->sr_err = LDAP_NO_SUCH_OBJECT;
 339                                         }
 340                                 }
 341
 342                         } else {
 343                                 rs->sr_err = rc;
 344                         }
 345                 }
 346
 347                 if ( gotit && BACKSQL_IS_GET_OC( flags ) ) {
 348                         bsi->bsi_base_id.eid_oc = backsql_id2oc( bi,
 349                                 bsi->bsi_base_id.eid_oc_id );
 350                         if ( bsi->bsi_base_id.eid_oc == NULL ) {
 351                                 /* error? */
 352                                 backsql_free_entryID( &bsi->bsi_base_id, 1,
 353                                         op->o_tmpmemctx );
 354                                 rc = rs->sr_err = LDAP_OTHER;
 355                         }
 356                 }
 357         }
 358
 359         bsi->bsi_status = rc;
 360
 361         switch ( rc ) {
 362         case LDAP_SUCCESS:
 363         case LDAP_REFERRAL:
 364                 break;
 365
 366         default:
 367                 bsi->bsi_op->o_tmpfree( bsi->bsi_attrs,
 368                                 bsi->bsi_op->o_tmpmemctx );
 369                 break;
 370         }
 371
 372         return rc;
 373 }
 374
 375 static int
 376 backsql_process_filter_list( backsql_srch_info *bsi, Filter *f, int op )
 377 {
 378         int             res;
 379
 380         if ( !f ) {
 381                 return 0;
 382         }
 383
 384         backsql_strfcat_x( &bsi->bsi_flt_where,
 385                         bsi->bsi_op->o_tmpmemctx, "c", '(' /* ) */  );
 386
 387         while ( 1 ) {
 388                 res = backsql_process_filter( bsi, f );
 389                 if ( res < 0 ) {
 390                         /*
 391                          * TimesTen : If the query has no answers,
 392                          * don't bother to run the query.
 393                          */
 394                         return -1;
 395                 }
 396
 397                 f = f->f_next;
 398                 if ( f == NULL ) {
 399                         break;
 400                 }
 401
 402                 switch ( op ) {
 403                 case LDAP_FILTER_AND:
 404                         backsql_strfcat_x( &bsi->bsi_flt_where,
 405                                         bsi->bsi_op->o_tmpmemctx, "l",
 406                                         (ber_len_t)STRLENOF( " AND " ),
 407                                                 " AND " );
 408                         break;
 409
 410                 case LDAP_FILTER_OR:
 411                         backsql_strfcat_x( &bsi->bsi_flt_where,
 412                                         bsi->bsi_op->o_tmpmemctx, "l",
 413                                         (ber_len_t)STRLENOF( " OR " ),
 414                                                 " OR " );
 415                         break;
 416                 }
 417         }
 418
 419         backsql_strfcat_x( &bsi->bsi_flt_where,
 420                         bsi->bsi_op->o_tmpmemctx, "c", /* ( */ ')' );
 421
 422         return 1;
 423 }
 424
 425 static int
 426 backsql_process_sub_filter( backsql_srch_info *bsi, Filter *f,
 427         backsql_at_map_rec *at )
 428 {
 429         backsql_info            *bi = (backsql_info *)bsi->bsi_op->o_bd->be_private;
 430         int                     i;
 431         int                     casefold = 0;
 432
 433         if ( !f ) {
 434                 return 0;
 435         }
 436
 437         /* always uppercase strings by now */
 438 #ifdef BACKSQL_UPPERCASE_FILTER
 439         if ( f->f_sub_desc->ad_type->sat_substr &&
 440                         SLAP_MR_ASSOCIATED( f->f_sub_desc->ad_type->sat_substr,
 441                                 bi->sql_caseIgnoreMatch ) )
 442 #endif /* BACKSQL_UPPERCASE_FILTER */
 443         {
 444                 casefold = 1;
 445         }
 446
 447         if ( f->f_sub_desc->ad_type->sat_substr &&
 448                         SLAP_MR_ASSOCIATED( f->f_sub_desc->ad_type->sat_substr,
 449                                 bi->sql_telephoneNumberMatch ) )
 450         {
 451
 452                 struct berval   bv;
 453                 ber_len_t       i, s, a;
 454
 455                 /*
 456                  * to check for matching telephone numbers
 457                  * with intermixed chars, e.g. val='1234'
 458                  * use
 459                  *
 460                  * val LIKE '%1%2%3%4%'
 461                  */
 462
 463                 BER_BVZERO( &bv );
 464                 if ( f->f_sub_initial.bv_val ) {
 465                         bv.bv_len += f->f_sub_initial.bv_len;
 466                 }
 467                 if ( f->f_sub_any != NULL ) {
 468                         for ( a = 0; f->f_sub_any[ a ].bv_val != NULL; a++ ) {
 469                                 bv.bv_len += f->f_sub_any[ a ].bv_len;
 470                         }
 471                 }
 472                 if ( f->f_sub_final.bv_val ) {
 473                         bv.bv_len += f->f_sub_final.bv_len;
 474                 }
 475                 bv.bv_len = 2 * bv.bv_len - 1;
 476                 bv.bv_val = ch_malloc( bv.bv_len + 1 );
 477
 478                 s = 0;
 479                 if ( !BER_BVISNULL( &f->f_sub_initial ) ) {
 480                         bv.bv_val[ s ] = f->f_sub_initial.bv_val[ 0 ];
 481                         for ( i = 1; i < f->f_sub_initial.bv_len; i++ ) {
 482                                 bv.bv_val[ s + 2 * i - 1 ] = '%';
 483                                 bv.bv_val[ s + 2 * i ] = f->f_sub_initial.bv_val[ i ];
 484                         }
 485                         bv.bv_val[ s + 2 * i - 1 ] = '%';
 486                         s += 2 * i;
 487                 }
 488
 489                 if ( f->f_sub_any != NULL ) {
 490                         for ( a = 0; !BER_BVISNULL( &f->f_sub_any[ a ] ); a++ ) {
 491                                 bv.bv_val[ s ] = f->f_sub_any[ a ].bv_val[ 0 ];
 492                                 for ( i = 1; i < f->f_sub_any[ a ].bv_len; i++ ) {
 493                                         bv.bv_val[ s + 2 * i - 1 ] = '%';
 494                                         bv.bv_val[ s + 2 * i ] = f->f_sub_any[ a ].bv_val[ i ];
 495                                 }
 496                                 bv.bv_val[ s + 2 * i - 1 ] = '%';
 497                                 s += 2 * i;
 498                         }
 499                 }
 500
 501                 if ( !BER_BVISNULL( &f->f_sub_final ) ) {
 502                         bv.bv_val[ s ] = f->f_sub_final.bv_val[ 0 ];
 503                         for ( i = 1; i < f->f_sub_final.bv_len; i++ ) {
 504                                 bv.bv_val[ s + 2 * i - 1 ] = '%';
 505                                 bv.bv_val[ s + 2 * i ] = f->f_sub_final.bv_val[ i ];
 506                         }
 507                                 bv.bv_val[ s + 2 * i - 1 ] = '%';
 508                         s += 2 * i;
 509                 }
 510
 511                 bv.bv_val[ s - 1 ] = '\0';
 512
 513                 (void)backsql_process_filter_like( bsi, at, casefold, &bv );
 514                 ch_free( bv.bv_val );
 515
 516                 return 1;
 517         }
 518
 519         /*
 520          * When dealing with case-sensitive strings
 521          * we may omit normalization; however, normalized
 522          * SQL filters are more liberal.
 523          */
 524
 525         backsql_strfcat_x( &bsi->bsi_flt_where,
 526                         bsi->bsi_op->o_tmpmemctx, "c", '(' /* ) */  );
 527
 528         /* TimesTen */
 529         Debug( LDAP_DEBUG_TRACE, "backsql_process_sub_filter(%s):\n",
 530                 at->bam_ad->ad_cname.bv_val, 0, 0 );
 531         Debug(LDAP_DEBUG_TRACE, "   expr: '%s%s%s'\n", at->bam_sel_expr.bv_val,
 532                 at->bam_sel_expr_u.bv_val ? "' '" : "",
 533                 at->bam_sel_expr_u.bv_val ? at->bam_sel_expr_u.bv_val : "" );
 534         if ( casefold && BACKSQL_AT_CANUPPERCASE( at ) ) {
 535                 /*
 536                  * If a pre-upper-cased version of the column
 537                  * or a precompiled upper function exists, use it
 538                  */
 539                 backsql_strfcat_x( &bsi->bsi_flt_where,
 540                                 bsi->bsi_op->o_tmpmemctx,
 541                                 "bl",
 542                                 &at->bam_sel_expr_u,
 543                                 (ber_len_t)STRLENOF( " LIKE '" ),
 544                                         " LIKE '" );
 545
 546         } else {
 547                 backsql_strfcat_x( &bsi->bsi_flt_where,
 548                                 bsi->bsi_op->o_tmpmemctx,
 549                                 "bl",
 550                                 &at->bam_sel_expr,
 551                                 (ber_len_t)STRLENOF( " LIKE '" ), " LIKE '" );
 552         }
 553
 554         if ( !BER_BVISNULL( &f->f_sub_initial ) ) {
 555                 ber_len_t       start;
 556
 557 #ifdef BACKSQL_TRACE
 558                 Debug( LDAP_DEBUG_TRACE,
 559                         "==>backsql_process_sub_filter(%s): "
 560                         "sub_initial=\"%s\"\n", at->bam_ad->ad_cname.bv_val,
 561                         f->f_sub_initial.bv_val, 0 );
 562 #endif /* BACKSQL_TRACE */
 563
 564                 start = bsi->bsi_flt_where.bb_val.bv_len;
 565                 backsql_strfcat_x( &bsi->bsi_flt_where,
 566                                 bsi->bsi_op->o_tmpmemctx,
 567                                 "b",
 568                                 &f->f_sub_initial );
 569                 if ( casefold && BACKSQL_AT_CANUPPERCASE( at ) ) {
 570                         ldap_pvt_str2upper( &bsi->bsi_flt_where.bb_val.bv_val[ start ] );
 571                 }
 572         }
 573
 574         backsql_strfcat_x( &bsi->bsi_flt_where,
 575                         bsi->bsi_op->o_tmpmemctx,
 576                         "c", '%' );
 577
 578         if ( f->f_sub_any != NULL ) {
 579                 for ( i = 0; !BER_BVISNULL( &f->f_sub_any[ i ] ); i++ ) {
 580                         ber_len_t       start;
 581
 582 #ifdef BACKSQL_TRACE
 583                         Debug( LDAP_DEBUG_TRACE,
 584                                 "==>backsql_process_sub_filter(%s): "
 585                                 "sub_any[%d]=\"%s\"\n", at->bam_ad->ad_cname.bv_val,
 586                                 i, f->f_sub_any[ i ].bv_val );
 587 #endif /* BACKSQL_TRACE */
 588
 589                         start = bsi->bsi_flt_where.bb_val.bv_len;
 590                         backsql_strfcat_x( &bsi->bsi_flt_where,
 591                                         bsi->bsi_op->o_tmpmemctx,
 592                                         "bc",
 593                                         &f->f_sub_any[ i ],
 594                                         '%' );
 595                         if ( casefold && BACKSQL_AT_CANUPPERCASE( at ) ) {
 596                                 /*
 597                                  * Note: toupper('%') = '%'
 598                                  */
 599                                 ldap_pvt_str2upper( &bsi->bsi_flt_where.bb_val.bv_val[ start ] );
 600                         }
 601                 }
 602         }
 603
 604         if ( !BER_BVISNULL( &f->f_sub_final ) ) {
 605                 ber_len_t       start;
 606
 607 #ifdef BACKSQL_TRACE
 608                 Debug( LDAP_DEBUG_TRACE,
 609                         "==>backsql_process_sub_filter(%s): "
 610                         "sub_final=\"%s\"\n", at->bam_ad->ad_cname.bv_val,
 611                         f->f_sub_final.bv_val, 0 );
 612 #endif /* BACKSQL_TRACE */
 613
 614                 start = bsi->bsi_flt_where.bb_val.bv_len;
 615                 backsql_strfcat_x( &bsi->bsi_flt_where,
 616                                 bsi->bsi_op->o_tmpmemctx,
 617                                 "b",
 618                                 &f->f_sub_final );
 619                 if ( casefold && BACKSQL_AT_CANUPPERCASE( at ) ) {
 620                         ldap_pvt_str2upper( &bsi->bsi_flt_where.bb_val.bv_val[ start ] );
 621                 }
 622         }
 623
 624         backsql_strfcat_x( &bsi->bsi_flt_where,
 625                         bsi->bsi_op->o_tmpmemctx,
 626                         "l",
 627                         (ber_len_t)STRLENOF( /* (' */ "')" ), /* (' */ "')" );
 628
 629         return 1;
 630 }
 631
 632 static int
 633 backsql_merge_from_tbls( backsql_srch_info *bsi, struct berval *from_tbls )
 634 {
 635         if ( BER_BVISNULL( from_tbls ) ) {
 636                 return LDAP_SUCCESS;
 637         }
 638
 639         if ( !BER_BVISNULL( &bsi->bsi_from.bb_val ) ) {
 640                 char            *start, *end;
 641                 struct berval   tmp;
 642
 643                 ber_dupbv_x( &tmp, from_tbls, bsi->bsi_op->o_tmpmemctx );
 644
 645                 for ( start = tmp.bv_val, end = strchr( start, ',' ); start; ) {
 646                         if ( end ) {
 647                                 end[0] = '\0';
 648                         }
 649
 650                         if ( strstr( bsi->bsi_from.bb_val.bv_val, start) == NULL )
 651                         {
 652                                 backsql_strfcat_x( &bsi->bsi_from,
 653                                                 bsi->bsi_op->o_tmpmemctx,
 654                                                 "cs", ',', start );
 655                         }
 656
 657                         if ( end ) {
 658                                 /* in case there are spaces after the comma... */
 659                                 for ( start = &end[1]; isspace( start[0] ); start++ );
 660                                 if ( start[0] ) {
 661                                         end = strchr( start, ',' );
 662                                 } else {
 663                                         start = NULL;
 664                                 }
 665                         } else {
 666                                 start = NULL;
 667                         }
 668                 }
 669
 670                 bsi->bsi_op->o_tmpfree( tmp.bv_val, bsi->bsi_op->o_tmpmemctx );
 671
 672         } else {
 673                 backsql_strfcat_x( &bsi->bsi_from,
 674                                 bsi->bsi_op->o_tmpmemctx,
 675                                 "b", from_tbls );
 676         }
 677
 678         return LDAP_SUCCESS;
 679 }
 680
 681 static int
 682 backsql_process_filter( backsql_srch_info *bsi, Filter *f )
 683 {
 684         backsql_at_map_rec      **vat = NULL;
 685         AttributeDescription    *ad = NULL;
 686         unsigned                i;
 687         int                     done = 0;
 688         int                     rc = 0;
 689
 690         Debug( LDAP_DEBUG_TRACE, "==>backsql_process_filter()\n", 0, 0, 0 );
 691         if ( f->f_choice == SLAPD_FILTER_COMPUTED ) {
 692                 struct berval   flt;
 693                 char            *msg = NULL;
 694
 695                 switch ( f->f_result ) {
 696                 case LDAP_COMPARE_TRUE:
 697                         BER_BVSTR( &flt, "10=10" );
 698                         msg = "TRUE";
 699                         break;
 700
 701                 case LDAP_COMPARE_FALSE:
 702                         BER_BVSTR( &flt, "11=0" );
 703                         msg = "FALSE";
 704                         break;
 705
 706                 case SLAPD_COMPARE_UNDEFINED:
 707                         BER_BVSTR( &flt, "12=0" );
 708                         msg = "UNDEFINED";
 709                         break;
 710
 711                 default:
 712                         rc = -1;
 713                         goto done;
 714                 }
 715
 716                 Debug( LDAP_DEBUG_TRACE, "backsql_process_filter(): "
 717                         "filter computed (%s)\n", msg, 0, 0 );
 718                 backsql_strfcat_x( &bsi->bsi_flt_where,
 719                                 bsi->bsi_op->o_tmpmemctx, "b", &flt );
 720                 rc = 1;
 721                 goto done;
 722         }
 723
 724         if ( f->f_choice & SLAPD_FILTER_UNDEFINED ) {
 725                 backsql_strfcat_x( &bsi->bsi_flt_where,
 726                         bsi->bsi_op->o_tmpmemctx,
 727                         "l",
 728                         (ber_len_t)STRLENOF( "1=0" ), "1=0" );
 729                 done = 1;
 730                 rc = 1;
 731                 goto done;
 732         }
 733
 734         switch( f->f_choice ) {
 735         case LDAP_FILTER_OR:
 736                 rc = backsql_process_filter_list( bsi, f->f_or,
 737                                 LDAP_FILTER_OR );
 738                 done = 1;
 739                 break;
 740
 741         case LDAP_FILTER_AND:
 742                 rc = backsql_process_filter_list( bsi, f->f_and,
 743                                 LDAP_FILTER_AND );
 744                 done = 1;
 745                 break;
 746
 747         case LDAP_FILTER_NOT:
 748                 backsql_strfcat_x( &bsi->bsi_flt_where,
 749                                 bsi->bsi_op->o_tmpmemctx,
 750                                 "l",
 751                                 (ber_len_t)STRLENOF( "NOT (" /* ) */ ),
 752                                         "NOT (" /* ) */ );
 753                 rc = backsql_process_filter( bsi, f->f_not );
 754                 backsql_strfcat_x( &bsi->bsi_flt_where,
 755                                 bsi->bsi_op->o_tmpmemctx,
 756                                 "c", /* ( */ ')' );
 757                 done = 1;
 758                 break;
 759
 760         case LDAP_FILTER_PRESENT:
 761                 ad = f->f_desc;
 762                 break;
 763
 764         case LDAP_FILTER_EXT:
 765                 ad = f->f_mra->ma_desc;
 766                 if ( f->f_mr_dnattrs ) {
 767                         /*
 768                          * if dn attrs filtering is requested, better return
 769                          * success and let test_filter() deal with candidate
 770                          * selection; otherwise we'd need to set conditions
 771                          * on the contents of the DN, e.g. "SELECT ... FROM
 772                          * ldap_entries AS attributeName WHERE attributeName.dn
 773                          * like '%attributeName=value%'"
 774                          */
 775                         backsql_strfcat_x( &bsi->bsi_flt_where,
 776                                         bsi->bsi_op->o_tmpmemctx,
 777                                         "l",
 778                                         (ber_len_t)STRLENOF( "1=1" ), "1=1" );
 779                         bsi->bsi_status = LDAP_SUCCESS;
 780                         rc = 1;
 781                         goto done;
 782                 }
 783                 break;
 784
 785         default:
 786                 ad = f->f_av_desc;
 787                 break;
 788         }
 789
 790         if ( rc == -1 ) {
 791                 goto done;
 792         }
 793
 794         if ( done ) {
 795                 rc = 1;
 796                 goto done;
 797         }
 798
 799         /*
 800          * Turn structuralObjectClass into objectClass
 801          */
 802         if ( ad == slap_schema.si_ad_objectClass
 803                         || ad == slap_schema.si_ad_structuralObjectClass )
 804         {
 805                 /*
 806                  * If the filter is LDAP_FILTER_PRESENT, then it's done;
 807                  * otherwise, let's see if we are lucky: filtering
 808                  * for "structural" objectclass or ancestor...
 809                  */
 810                 switch ( f->f_choice ) {
 811                 case LDAP_FILTER_EQUALITY:
 812                 {
 813                         ObjectClass     *oc = oc_bvfind( &f->f_av_value );
 814
 815                         if ( oc == NULL ) {
 816                                 Debug( LDAP_DEBUG_TRACE,
 817                                                 "backsql_process_filter(): "
 818                                                 "unknown objectClass \"%s\" "
 819                                                 "in filter\n",
 820                                                 f->f_av_value.bv_val, 0, 0 );
 821                                 bsi->bsi_status = LDAP_OTHER;
 822                                 rc = -1;
 823                                 goto done;
 824                         }
 825
 826                         /*
 827                          * "structural" objectClass inheritance:
 828                          * - a search for "person" will also return
 829                          *   "inetOrgPerson"
 830                          * - a search for "top" will return everything
 831                          */
 832                         if ( is_object_subclass( oc, bsi->bsi_oc->bom_oc ) ) {
 833                                 static struct berval ldap_entry_objclasses = BER_BVC( "ldap_entry_objclasses" );
 834
 835                                 backsql_merge_from_tbls( bsi, &ldap_entry_objclasses );
 836
 837                                 backsql_strfcat_x( &bsi->bsi_flt_where,
 838                                                 bsi->bsi_op->o_tmpmemctx,
 839                                                 "lbl",
 840                                                 (ber_len_t)STRLENOF( "(2=2 OR (ldap_entries.id=ldap_entry_objclasses.entry_id AND ldap_entry_objclasses.oc_name='" /* ')) */ ),
 841                                                         "(2=2 OR (ldap_entries.id=ldap_entry_objclasses.entry_id AND ldap_entry_objclasses.oc_name='" /* ')) */,
 842                                                 &bsi->bsi_oc->bom_oc->soc_cname,
 843                                                 (ber_len_t)STRLENOF( /* ((' */ "'))" ),
 844                                                         /* ((' */ "'))" );
 845                                 bsi->bsi_status = LDAP_SUCCESS;
 846                                 rc = 1;
 847                                 goto done;
 848                         }
 849
 850                         break;
 851                 }
 852
 853                 case LDAP_FILTER_PRESENT:
 854                         backsql_strfcat_x( &bsi->bsi_flt_where,
 855                                         bsi->bsi_op->o_tmpmemctx,
 856                                         "l",
 857                                         (ber_len_t)STRLENOF( "3=3" ), "3=3" );
 858                         bsi->bsi_status = LDAP_SUCCESS;
 859                         rc = 1;
 860                         goto done;
 861
 862                         /* FIXME: LDAP_FILTER_EXT? */
 863
 864                 default:
 865                         Debug( LDAP_DEBUG_TRACE,
 866                                         "backsql_process_filter(): "
 867                                         "illegal/unhandled filter "
 868                                         "on objectClass attribute",
 869                                         0, 0, 0 );
 870                         bsi->bsi_status = LDAP_OTHER;
 871                         rc = -1;
 872                         goto done;
 873                 }
 874
 875         } else if ( ad == slap_schema.si_ad_entryUUID ) {
 876                 unsigned long   oc_id;
 877 #ifdef BACKSQL_ARBITRARY_KEY
 878                 struct berval   keyval;
 879 #else /* ! BACKSQL_ARBITRARY_KEY */
 880                 unsigned long   keyval;
 881                 char            keyvalbuf[LDAP_PVT_INTTYPE_CHARS(unsigned long)];
 882 #endif /* ! BACKSQL_ARBITRARY_KEY */
 883
 884                 switch ( f->f_choice ) {
 885                 case LDAP_FILTER_EQUALITY:
 886                         backsql_entryUUID_decode( &f->f_av_value, &oc_id, &keyval );
 887
 888                         if ( oc_id != bsi->bsi_oc->bom_id ) {
 889                                 bsi->bsi_status = LDAP_SUCCESS;
 890                                 rc = -1;
 891                                 goto done;
 892                         }
 893
 894 #ifdef BACKSQL_ARBITRARY_KEY
 895                         backsql_strfcat_x( &bsi->bsi_flt_where,
 896                                         bsi->bsi_op->o_tmpmemctx,
 897                                         "bcblbc",
 898                                         &bsi->bsi_oc->bom_keytbl, '.',
 899                                         &bsi->bsi_oc->bom_keycol,
 900                                         STRLENOF( " LIKE '" ), " LIKE '",
 901                                         &keyval, '\'' );
 902 #else /* ! BACKSQL_ARBITRARY_KEY */
 903                         snprintf( keyvalbuf, sizeof( keyvalbuf ), "%lu", keyval );
 904                         backsql_strfcat_x( &bsi->bsi_flt_where,
 905                                         bsi->bsi_op->o_tmpmemctx,
 906                                         "bcbcs",
 907                                         &bsi->bsi_oc->bom_keytbl, '.',
 908                                         &bsi->bsi_oc->bom_keycol, '=', keyvalbuf );
 909 #endif /* ! BACKSQL_ARBITRARY_KEY */
 910                         break;
 911
 912                 case LDAP_FILTER_PRESENT:
 913                         backsql_strfcat_x( &bsi->bsi_flt_where,
 914                                         bsi->bsi_op->o_tmpmemctx,
 915                                         "l",
 916                                         (ber_len_t)STRLENOF( "4=4" ), "4=4" );
 917                         break;
 918
 919                 default:
 920                         rc = -1;
 921                         goto done;
 922                 }
 923
 924                 bsi->bsi_flags |= BSQL_SF_FILTER_ENTRYUUID;
 925                 rc = 1;
 926                 goto done;
 927
 928 #ifdef BACKSQL_SYNCPROV
 929         } else if ( ad == slap_schema.si_ad_entryCSN ) {
 930                 /*
 931                  * support for syncrepl as provider...
 932                  */
 933 #if 0
 934                 if ( !bsi->bsi_op->o_sync ) {
 935                         /* unsupported at present... */
 936                         bsi->bsi_status = LDAP_OTHER;
 937                         rc = -1;
 938                         goto done;
 939                 }
 940 #endif
 941
 942                 bsi->bsi_flags |= ( BSQL_SF_FILTER_ENTRYCSN | BSQL_SF_RETURN_ENTRYUUID);
 943
 944                 /* if doing a syncrepl, try to return as much as possible,
 945                  * and always match the filter */
 946                 backsql_strfcat_x( &bsi->bsi_flt_where,
 947                                 bsi->bsi_op->o_tmpmemctx,
 948                                 "l",
 949                                 (ber_len_t)STRLENOF( "5=5" ), "5=5" );
 950
 951                 /* save for later use in operational attributes */
 952                 /* FIXME: saves only the first occurrence, because
 953                  * the filter during updates is written as
 954                  * "(&(entryCSN<={contextCSN})(entryCSN>={oldContextCSN})({filter}))"
 955                  * so we want our fake entryCSN to match the greatest
 956                  * value
 957                  */
 958                 if ( bsi->bsi_op->o_private == NULL ) {
 959                         bsi->bsi_op->o_private = &f->f_av_value;
 960                 }
 961                 bsi->bsi_status = LDAP_SUCCESS;
 962
 963                 rc = 1;
 964                 goto done;
 965 #endif /* BACKSQL_SYNCPROV */
 966
 967         } else if ( ad == slap_schema.si_ad_hasSubordinates || ad == NULL ) {
 968                 /*
 969                  * FIXME: this is not robust; e.g. a filter
 970                  * '(!(hasSubordinates=TRUE))' fails because
 971                  * in SQL it would read 'NOT (1=1)' instead
 972                  * of no condition.
 973                  * Note however that hasSubordinates is boolean,
 974                  * so a more appropriate filter would be
 975                  * '(hasSubordinates=FALSE)'
 976                  *
 977                  * A more robust search for hasSubordinates
 978                  * would * require joining the ldap_entries table
 979                  * selecting if there are descendants of the
 980                  * candidate.
 981                  */
 982                 backsql_strfcat_x( &bsi->bsi_flt_where,
 983                                 bsi->bsi_op->o_tmpmemctx,
 984                                 "l",
 985                                 (ber_len_t)STRLENOF( "6=6" ), "6=6" );
 986                 if ( ad == slap_schema.si_ad_hasSubordinates ) {
 987                         /*
 988                          * instruct candidate selection algorithm
 989                          * and attribute list to try to detect
 990                          * if an entry has subordinates
 991                          */
 992                         bsi->bsi_flags |= BSQL_SF_FILTER_HASSUBORDINATE;
 993
 994                 } else {
 995                         /*
 996                          * clear attributes to fetch, to require ALL
 997                          * and try extended match on all attributes
 998                          */
 999                         backsql_attrlist_add( bsi, NULL );
1000                 }
1001                 rc = 1;
1002                 goto done;
1003         }
1004
1005         /*
1006          * attribute inheritance:
1007          */
1008         if ( backsql_supad2at( bsi->bsi_oc, ad, &vat ) ) {
1009                 bsi->bsi_status = LDAP_OTHER;
1010                 rc = -1;
1011                 goto done;
1012         }
1013
1014         if ( vat == NULL ) {
1015                 /* search anyway; other parts of the filter
1016                  * may succeed */
1017                 backsql_strfcat_x( &bsi->bsi_flt_where,
1018                                 bsi->bsi_op->o_tmpmemctx,
1019                                 "l",
1020                                 (ber_len_t)STRLENOF( "7=7" ), "7=7" );
1021                 bsi->bsi_status = LDAP_SUCCESS;
1022                 rc = 1;
1023                 goto done;
1024         }
1025
1026         /* if required, open extra level of parens */
1027         done = 0;
1028         if ( vat[0]->bam_next || vat[1] ) {
1029                 backsql_strfcat_x( &bsi->bsi_flt_where,
1030                                 bsi->bsi_op->o_tmpmemctx,
1031                                 "c", '(' );
1032                 done = 1;
1033         }
1034
1035         i = 0;
1036 next:;
1037         /* apply attr */
1038         if ( backsql_process_filter_attr( bsi, f, vat[i] ) == -1 ) {
1039                 return -1;
1040         }
1041
1042         /* if more definitions of the same attr, apply */
1043         if ( vat[i]->bam_next ) {
1044                 backsql_strfcat_x( &bsi->bsi_flt_where,
1045                                 bsi->bsi_op->o_tmpmemctx,
1046                                 "l",
1047                         STRLENOF( " OR " ), " OR " );
1048                 vat[i] = vat[i]->bam_next;
1049                 goto next;
1050         }
1051
1052         /* if more descendants of the same attr, apply */
1053         i++;
1054         if ( vat[i] ) {
1055                 backsql_strfcat_x( &bsi->bsi_flt_where,
1056                                 bsi->bsi_op->o_tmpmemctx,
1057                                 "l",
1058                         STRLENOF( " OR " ), " OR " );
1059                 goto next;
1060         }
1061
1062         /* if needed, close extra level of parens */
1063         if ( done ) {
1064                 backsql_strfcat_x( &bsi->bsi_flt_where,
1065                                 bsi->bsi_op->o_tmpmemctx,
1066                                 "c", ')' );
1067         }
1068
1069         rc = 1;
1070
1071 done:;
1072         if ( vat ) {
1073                 ch_free( vat );
1074         }
1075
1076         Debug( LDAP_DEBUG_TRACE,
1077                         "<==backsql_process_filter() %s\n",
1078                         rc == 1 ? "succeeded" : "failed", 0, 0);
1079
1080         return rc;
1081 }
1082
1083 static int
1084 backsql_process_filter_eq( backsql_srch_info *bsi, backsql_at_map_rec *at,
1085                 int casefold, struct berval *filter_value )
1086 {
1087         /*
1088          * maybe we should check type of at->sel_expr here somehow,
1089          * to know whether upper_func is applicable, but for now
1090          * upper_func stuff is made for Oracle, where UPPER is
1091          * safely applicable to NUMBER etc.
1092          */
1093         if ( casefold && BACKSQL_AT_CANUPPERCASE( at ) ) {
1094                 ber_len_t       start;
1095
1096                 backsql_strfcat_x( &bsi->bsi_flt_where,
1097                                 bsi->bsi_op->o_tmpmemctx,
1098                                 "cbl",
1099                                 '(', /* ) */
1100                                 &at->bam_sel_expr_u,
1101                                 (ber_len_t)STRLENOF( "='" ),
1102                                         "='" );
1103
1104                 start = bsi->bsi_flt_where.bb_val.bv_len;
1105
1106                 backsql_strfcat_x( &bsi->bsi_flt_where,
1107                                 bsi->bsi_op->o_tmpmemctx,
1108                                 "bl",
1109                                 filter_value,
1110                                 (ber_len_t)STRLENOF( /* (' */ "')" ),
1111                                         /* (' */ "')" );
1112
1113                 ldap_pvt_str2upper( &bsi->bsi_flt_where.bb_val.bv_val[ start ] );
1114
1115         } else {
1116                 backsql_strfcat_x( &bsi->bsi_flt_where,
1117                                 bsi->bsi_op->o_tmpmemctx,
1118                                 "cblbl",
1119                                 '(', /* ) */
1120                                 &at->bam_sel_expr,
1121                                 (ber_len_t)STRLENOF( "='" ), "='",
1122                                 filter_value,
1123                                 (ber_len_t)STRLENOF( /* (' */ "')" ),
1124                                         /* (' */ "')" );
1125         }
1126
1127         return 1;
1128 }
1129
1130 static int
1131 backsql_process_filter_like( backsql_srch_info *bsi, backsql_at_map_rec *at,
1132                 int casefold, struct berval *filter_value )
1133 {
1134         /*
1135          * maybe we should check type of at->sel_expr here somehow,
1136          * to know whether upper_func is applicable, but for now
1137          * upper_func stuff is made for Oracle, where UPPER is
1138          * safely applicable to NUMBER etc.
1139          */
1140         if ( casefold && BACKSQL_AT_CANUPPERCASE( at ) ) {
1141                 ber_len_t       start;
1142
1143                 backsql_strfcat_x( &bsi->bsi_flt_where,
1144                                 bsi->bsi_op->o_tmpmemctx,
1145                                 "cbl",
1146                                 '(', /* ) */
1147                                 &at->bam_sel_expr_u,
1148                                 (ber_len_t)STRLENOF( " LIKE '%" ),
1149                                         " LIKE '%" );
1150
1151                 start = bsi->bsi_flt_where.bb_val.bv_len;
1152
1153                 backsql_strfcat_x( &bsi->bsi_flt_where,
1154                                 bsi->bsi_op->o_tmpmemctx,
1155                                 "bl",
1156                                 filter_value,
1157                                 (ber_len_t)STRLENOF( /* (' */ "%')" ),
1158                                         /* (' */ "%')" );
1159
1160                 ldap_pvt_str2upper( &bsi->bsi_flt_where.bb_val.bv_val[ start ] );
1161
1162         } else {
1163                 backsql_strfcat_x( &bsi->bsi_flt_where,
1164                                 bsi->bsi_op->o_tmpmemctx,
1165                                 "cblbl",
1166                                 '(', /* ) */
1167                                 &at->bam_sel_expr,
1168                                 (ber_len_t)STRLENOF( " LIKE '%" ),
1169                                         " LIKE '%",
1170                                 filter_value,
1171                                 (ber_len_t)STRLENOF( /* (' */ "%')" ),
1172                                         /* (' */ "%')" );
1173         }
1174
1175         return 1;
1176 }
1177
1178 static int
1179 backsql_process_filter_attr( backsql_srch_info *bsi, Filter *f, backsql_at_map_rec *at )
1180 {
1181         backsql_info            *bi = (backsql_info *)bsi->bsi_op->o_bd->be_private;
1182         int                     casefold = 0;
1183         struct berval           *filter_value = NULL;
1184         MatchingRule            *matching_rule = NULL;
1185         struct berval           ordering = BER_BVC("<=");
1186
1187         Debug( LDAP_DEBUG_TRACE, "==>backsql_process_filter_attr(%s)\n",
1188                 at->bam_ad->ad_cname.bv_val, 0, 0 );
1189
1190         /*
1191          * need to add this attribute to list of attrs to load,
1192          * so that we can do test_filter() later
1193          */
1194         backsql_attrlist_add( bsi, at->bam_ad );
1195
1196         backsql_merge_from_tbls( bsi, &at->bam_from_tbls );
1197
1198         if ( !BER_BVISNULL( &at->bam_join_where )
1199                         && strstr( bsi->bsi_join_where.bb_val.bv_val,
1200                                 at->bam_join_where.bv_val ) == NULL )
1201         {
1202                 backsql_strfcat_x( &bsi->bsi_join_where,
1203                                 bsi->bsi_op->o_tmpmemctx,
1204                                 "lb",
1205                                 (ber_len_t)STRLENOF( " AND " ), " AND ",
1206                                 &at->bam_join_where );
1207         }
1208
1209         if ( f->f_choice & SLAPD_FILTER_UNDEFINED ) {
1210                 backsql_strfcat_x( &bsi->bsi_flt_where,
1211                         bsi->bsi_op->o_tmpmemctx,
1212                         "l",
1213                         (ber_len_t)STRLENOF( "1=0" ), "1=0" );
1214                 return 1;
1215         }
1216
1217         switch ( f->f_choice ) {
1218         case LDAP_FILTER_EQUALITY:
1219                 filter_value = &f->f_av_value;
1220                 matching_rule = at->bam_ad->ad_type->sat_equality;
1221
1222                 goto equality_match;
1223
1224                 /* fail over into next case */
1225
1226         case LDAP_FILTER_EXT:
1227                 filter_value = &f->f_mra->ma_value;
1228                 matching_rule = f->f_mr_rule;
1229
1230 equality_match:;
1231                 /* always uppercase strings by now */
1232 #ifdef BACKSQL_UPPERCASE_FILTER
1233                 if ( SLAP_MR_ASSOCIATED( matching_rule,
1234                                         bi->sql_caseIgnoreMatch ) )
1235 #endif /* BACKSQL_UPPERCASE_FILTER */
1236                 {
1237                         casefold = 1;
1238                 }
1239
1240                 /* FIXME: directoryString filtering should use a similar
1241                  * approach to deal with non-prettified values like
1242                  * " A  non    prettified   value  ", by using a LIKE
1243                  * filter with all whitespaces collapsed to a single '%' */
1244                 if ( SLAP_MR_ASSOCIATED( matching_rule,
1245                                         bi->sql_telephoneNumberMatch ) )
1246                 {
1247                         struct berval   bv;
1248                         ber_len_t       i;
1249
1250                         /*
1251                          * to check for matching telephone numbers
1252                          * with intermized chars, e.g. val='1234'
1253                          * use
1254                          *
1255                          * val LIKE '%1%2%3%4%'
1256                          */
1257
1258                         bv.bv_len = 2 * filter_value->bv_len - 1;
1259                         bv.bv_val = ch_malloc( bv.bv_len + 1 );
1260
1261                         bv.bv_val[ 0 ] = filter_value->bv_val[ 0 ];
1262                         for ( i = 1; i < filter_value->bv_len; i++ ) {
1263                                 bv.bv_val[ 2 * i - 1 ] = '%';
1264                                 bv.bv_val[ 2 * i ] = filter_value->bv_val[ i ];
1265                         }
1266                         bv.bv_val[ 2 * i - 1 ] = '\0';
1267
1268                         (void)backsql_process_filter_like( bsi, at, casefold, &bv );
1269                         ch_free( bv.bv_val );
1270
1271                         break;
1272                 }
1273
1274                 /* NOTE: this is required by objectClass inheritance
1275                  * and auxiliary objectClass use in filters for slightly
1276                  * more efficient candidate selection. */
1277                 /* FIXME: a bit too many specializations to deal with
1278                  * very specific cases... */
1279                 if ( at->bam_ad == slap_schema.si_ad_objectClass
1280                                 || at->bam_ad == slap_schema.si_ad_structuralObjectClass )
1281                 {
1282                         backsql_strfcat_x( &bsi->bsi_flt_where,
1283                                         bsi->bsi_op->o_tmpmemctx,
1284                                         "lbl",
1285                                         (ber_len_t)STRLENOF( "(ldap_entries.id=ldap_entry_objclasses.entry_id AND ldap_entry_objclasses.oc_name='" /* ') */ ),
1286                                                 "(ldap_entries.id=ldap_entry_objclasses.entry_id AND ldap_entry_objclasses.oc_name='" /* ') */,
1287                                         filter_value,
1288                                         (ber_len_t)STRLENOF( /* (' */ "')" ),
1289                                                 /* (' */ "')" );
1290                         break;
1291                 }
1292
1293                 /*
1294                  * maybe we should check type of at->sel_expr here somehow,
1295                  * to know whether upper_func is applicable, but for now
1296                  * upper_func stuff is made for Oracle, where UPPER is
1297                  * safely applicable to NUMBER etc.
1298                  */
1299                 (void)backsql_process_filter_eq( bsi, at, casefold, filter_value );
1300                 break;
1301
1302         case LDAP_FILTER_GE:
1303                 ordering.bv_val = ">=";
1304
1305                 /* fall thru to next case */
1306
1307         case LDAP_FILTER_LE:
1308                 filter_value = &f->f_av_value;
1309
1310                 /* always uppercase strings by now */
1311 #ifdef BACKSQL_UPPERCASE_FILTER
1312                 if ( at->bam_ad->ad_type->sat_ordering &&
1313                                 SLAP_MR_ASSOCIATED( at->bam_ad->ad_type->sat_ordering,
1314                                         bi->sql_caseIgnoreMatch ) )
1315 #endif /* BACKSQL_UPPERCASE_FILTER */
1316                 {
1317                         casefold = 1;
1318                 }
1319
1320                 /*
1321                  * FIXME: should we uppercase the operands?
1322                  */
1323                 if ( casefold && BACKSQL_AT_CANUPPERCASE( at ) ) {
1324                         ber_len_t       start;
1325
1326                         backsql_strfcat_x( &bsi->bsi_flt_where,
1327                                         bsi->bsi_op->o_tmpmemctx,
1328                                         "cbbc",
1329                                         '(', /* ) */
1330                                         &at->bam_sel_expr_u,
1331                                         &ordering,
1332                                         '\'' );
1333
1334                         start = bsi->bsi_flt_where.bb_val.bv_len;
1335
1336                         backsql_strfcat_x( &bsi->bsi_flt_where,
1337                                         bsi->bsi_op->o_tmpmemctx,
1338                                         "bl",
1339                                         filter_value,
1340                                         (ber_len_t)STRLENOF( /* (' */ "')" ),
1341                                                 /* (' */ "')" );
1342
1343                         ldap_pvt_str2upper( &bsi->bsi_flt_where.bb_val.bv_val[ start ] );
1344
1345                 } else {
1346                         backsql_strfcat_x( &bsi->bsi_flt_where,
1347                                         bsi->bsi_op->o_tmpmemctx,
1348                                         "cbbcbl",
1349                                         '(' /* ) */ ,
1350                                         &at->bam_sel_expr,
1351                                         &ordering,
1352                                         '\'',
1353                                         &f->f_av_value,
1354                                         (ber_len_t)STRLENOF( /* (' */ "')" ),
1355                                                 /* ( */ "')" );
1356                 }
1357                 break;
1358
1359         case LDAP_FILTER_PRESENT:
1360                 backsql_strfcat_x( &bsi->bsi_flt_where,
1361                                 bsi->bsi_op->o_tmpmemctx,
1362                                 "lbl",
1363                                 (ber_len_t)STRLENOF( "NOT (" /* ) */),
1364                                         "NOT (", /* ) */
1365                                 &at->bam_sel_expr,
1366                                 (ber_len_t)STRLENOF( /* ( */ " IS NULL)" ),
1367                                         /* ( */ " IS NULL)" );
1368                 break;
1369
1370         case LDAP_FILTER_SUBSTRINGS:
1371                 backsql_process_sub_filter( bsi, f, at );
1372                 break;
1373
1374         case LDAP_FILTER_APPROX:
1375                 /* we do our best */
1376
1377                 /*
1378                  * maybe we should check type of at->sel_expr here somehow,
1379                  * to know whether upper_func is applicable, but for now
1380                  * upper_func stuff is made for Oracle, where UPPER is
1381                  * safely applicable to NUMBER etc.
1382                  */
1383                 (void)backsql_process_filter_like( bsi, at, 1, &f->f_av_value );
1384                 break;
1385
1386         default:
1387                 /* unhandled filter type; should not happen */
1388                 assert( 0 );
1389                 backsql_strfcat_x( &bsi->bsi_flt_where,
1390                                 bsi->bsi_op->o_tmpmemctx,
1391                                 "l",
1392                                 (ber_len_t)STRLENOF( "8=8" ), "8=8" );
1393                 break;
1394
1395         }
1396
1397         Debug( LDAP_DEBUG_TRACE, "<==backsql_process_filter_attr(%s)\n",
1398                 at->bam_ad->ad_cname.bv_val, 0, 0 );
1399
1400         return 1;
1401 }
1402
1403 static int
1404 backsql_srch_query( backsql_srch_info *bsi, struct berval *query )
1405 {
1406         backsql_info            *bi = (backsql_info *)bsi->bsi_op->o_bd->be_private;
1407         int                     rc;
1408
1409         assert( query != NULL );
1410         BER_BVZERO( query );
1411
1412         bsi->bsi_use_subtree_shortcut = 0;
1413
1414         Debug( LDAP_DEBUG_TRACE, "==>backsql_srch_query()\n", 0, 0, 0 );
1415         BER_BVZERO( &bsi->bsi_sel.bb_val );
1416         BER_BVZERO( &bsi->bsi_sel.bb_val );
1417         bsi->bsi_sel.bb_len = 0;
1418         BER_BVZERO( &bsi->bsi_from.bb_val );
1419         bsi->bsi_from.bb_len = 0;
1420         BER_BVZERO( &bsi->bsi_join_where.bb_val );
1421         bsi->bsi_join_where.bb_len = 0;
1422         BER_BVZERO( &bsi->bsi_flt_where.bb_val );
1423         bsi->bsi_flt_where.bb_len = 0;
1424
1425         backsql_strfcat_x( &bsi->bsi_sel,
1426                         bsi->bsi_op->o_tmpmemctx,
1427                         "lbcbc",
1428                         (ber_len_t)STRLENOF( "SELECT DISTINCT ldap_entries.id," ),
1429                                 "SELECT DISTINCT ldap_entries.id,",
1430                         &bsi->bsi_oc->bom_keytbl,
1431                         '.',
1432                         &bsi->bsi_oc->bom_keycol,
1433                         ',' );
1434
1435         if ( !BER_BVISNULL( &bi->sql_strcast_func ) ) {
1436                 backsql_strfcat_x( &bsi->bsi_sel,
1437                                 bsi->bsi_op->o_tmpmemctx,
1438                                 "blbl",
1439                                 &bi->sql_strcast_func,
1440                                 (ber_len_t)STRLENOF( "('" /* ') */ ),
1441                                         "('" /* ') */ ,
1442                                 &bsi->bsi_oc->bom_oc->soc_cname,
1443                                 (ber_len_t)STRLENOF( /* (' */ "')" ),
1444                                         /* (' */ "')" );
1445         } else {
1446                 backsql_strfcat_x( &bsi->bsi_sel,
1447                                 bsi->bsi_op->o_tmpmemctx,
1448                                 "cbc",
1449                                 '\'',
1450                                 &bsi->bsi_oc->bom_oc->soc_cname,
1451                                 '\'' );
1452         }
1453
1454         backsql_strfcat_x( &bsi->bsi_sel,
1455                         bsi->bsi_op->o_tmpmemctx,
1456                         "b",
1457                         &bi->sql_dn_oc_aliasing );
1458         backsql_strfcat_x( &bsi->bsi_from,
1459                         bsi->bsi_op->o_tmpmemctx,
1460                         "lb",
1461                         (ber_len_t)STRLENOF( " FROM ldap_entries," ),
1462                                 " FROM ldap_entries,",
1463                         &bsi->bsi_oc->bom_keytbl );
1464
1465         backsql_strfcat_x( &bsi->bsi_join_where,
1466                         bsi->bsi_op->o_tmpmemctx,
1467                         "lbcbl",
1468                         (ber_len_t)STRLENOF( " WHERE " ), " WHERE ",
1469                         &bsi->bsi_oc->bom_keytbl,
1470                         '.',
1471                         &bsi->bsi_oc->bom_keycol,
1472                         (ber_len_t)STRLENOF( "=ldap_entries.keyval AND ldap_entries.oc_map_id=? AND " ),
1473                                 "=ldap_entries.keyval AND ldap_entries.oc_map_id=? AND " );
1474
1475         switch ( bsi->bsi_scope ) {
1476         case LDAP_SCOPE_BASE:
1477                 if ( BACKSQL_CANUPPERCASE( bi ) ) {
1478                         backsql_strfcat_x( &bsi->bsi_join_where,
1479                                         bsi->bsi_op->o_tmpmemctx,
1480                                         "bl",
1481                                         &bi->sql_upper_func,
1482                                         (ber_len_t)STRLENOF( "(ldap_entries.dn)=?" ),
1483                                                 "(ldap_entries.dn)=?" );
1484                 } else {
1485                         backsql_strfcat_x( &bsi->bsi_join_where,
1486                                         bsi->bsi_op->o_tmpmemctx,
1487                                         "l",
1488                                         (ber_len_t)STRLENOF( "ldap_entries.dn=?" ),
1489                                                 "ldap_entries.dn=?" );
1490                 }
1491                 break;
1492
1493         case BACKSQL_SCOPE_BASE_LIKE:
1494                 if ( BACKSQL_CANUPPERCASE( bi ) ) {
1495                         backsql_strfcat_x( &bsi->bsi_join_where,
1496                                         bsi->bsi_op->o_tmpmemctx,
1497                                         "bl",
1498                                         &bi->sql_upper_func,
1499                                         (ber_len_t)STRLENOF( "(ldap_entries.dn) LIKE ?" ),
1500                                                 "(ldap_entries.dn) LIKE ?" );
1501                 } else {
1502                         backsql_strfcat_x( &bsi->bsi_join_where,
1503                                         bsi->bsi_op->o_tmpmemctx,
1504                                         "l",
1505                                         (ber_len_t)STRLENOF( "ldap_entries.dn LIKE ?" ),
1506                                                 "ldap_entries.dn LIKE ?" );
1507                 }
1508                 break;
1509
1510         case LDAP_SCOPE_ONELEVEL:
1511                 backsql_strfcat_x( &bsi->bsi_join_where,
1512                                 bsi->bsi_op->o_tmpmemctx,
1513                                 "l",
1514                                 (ber_len_t)STRLENOF( "ldap_entries.parent=?" ),
1515                                         "ldap_entries.parent=?" );
1516                 break;
1517
1518         case LDAP_SCOPE_SUBORDINATE:
1519         case LDAP_SCOPE_SUBTREE:
1520                 if ( BACKSQL_USE_SUBTREE_SHORTCUT( bi ) ) {
1521                         int             i;
1522                         BackendDB       *bd = bsi->bsi_op->o_bd;
1523
1524                         assert( bd->be_nsuffix != NULL );
1525
1526                         for ( i = 0; !BER_BVISNULL( &bd->be_nsuffix[ i ] ); i++ )
1527                         {
1528                                 if ( dn_match( &bd->be_nsuffix[ i ],
1529                                                         bsi->bsi_base_ndn ) )
1530                                 {
1531                                         /* pass this to the candidate selection
1532                                          * routine so that the DN is not bound
1533                                          * to the select statement */
1534                                         bsi->bsi_use_subtree_shortcut = 1;
1535                                         break;
1536                                 }
1537                         }
1538                 }
1539
1540                 if ( bsi->bsi_use_subtree_shortcut ) {
1541                         /* Skip the base DN filter, as every entry will match it */
1542                         backsql_strfcat_x( &bsi->bsi_join_where,
1543                                         bsi->bsi_op->o_tmpmemctx,
1544                                         "l",
1545                                         (ber_len_t)STRLENOF( "9=9"), "9=9");
1546
1547                 } else if ( !BER_BVISNULL( &bi->sql_subtree_cond ) ) {
1548                         /* This should always be true... */
1549                         backsql_strfcat_x( &bsi->bsi_join_where,
1550                                         bsi->bsi_op->o_tmpmemctx,
1551                                         "b",
1552                                         &bi->sql_subtree_cond );
1553
1554                 } else if ( BACKSQL_CANUPPERCASE( bi ) ) {
1555                         backsql_strfcat_x( &bsi->bsi_join_where,
1556                                         bsi->bsi_op->o_tmpmemctx,
1557                                         "bl",
1558                                         &bi->sql_upper_func,
1559                                         (ber_len_t)STRLENOF( "(ldap_entries.dn) LIKE ?" ),
1560                                                 "(ldap_entries.dn) LIKE ?"  );
1561
1562                 } else {
1563                         backsql_strfcat_x( &bsi->bsi_join_where,
1564                                         bsi->bsi_op->o_tmpmemctx,
1565                                         "l",
1566                                         (ber_len_t)STRLENOF( "ldap_entries.dn LIKE ?" ),
1567                                                 "ldap_entries.dn LIKE ?" );
1568                 }
1569
1570                 break;
1571
1572         default:
1573                 assert( 0 );
1574         }
1575
1576 #ifndef BACKSQL_ARBITRARY_KEY
1577         /* If paged results are in effect, ignore low ldap_entries.id numbers */
1578         if ( get_pagedresults(bsi->bsi_op) > SLAP_CONTROL_IGNORED ) {
1579                 unsigned long lowid = 0;
1580
1581                 /* Pick up the previous ldap_entries.id if the previous page ended in this objectClass */
1582                 if ( bsi->bsi_oc->bom_id == PAGECOOKIE_TO_SQL_OC( ((PagedResultsState *)bsi->bsi_op->o_pagedresults_state)->ps_cookie ) )
1583                 {
1584                         lowid = PAGECOOKIE_TO_SQL_ID( ((PagedResultsState *)bsi->bsi_op->o_pagedresults_state)->ps_cookie );
1585                 }
1586
1587                 if ( lowid ) {
1588                         char lowidstring[48];
1589                         int  lowidlen;
1590
1591                         lowidlen = snprintf( lowidstring, sizeof( lowidstring ),
1592                                 " AND ldap_entries.id>%lu", lowid );
1593                         backsql_strfcat_x( &bsi->bsi_join_where,
1594                                         bsi->bsi_op->o_tmpmemctx,
1595                                         "l",
1596                                         (ber_len_t)lowidlen,
1597                                         lowidstring );
1598                 }
1599         }
1600 #endif /* ! BACKSQL_ARBITRARY_KEY */
1601
1602         rc = backsql_process_filter( bsi, bsi->bsi_filter );
1603         if ( rc > 0 ) {
1604                 struct berbuf   bb = BB_NULL;
1605
1606                 backsql_strfcat_x( &bb,
1607                                 bsi->bsi_op->o_tmpmemctx,
1608                                 "bbblb",
1609                                 &bsi->bsi_sel.bb_val,
1610                                 &bsi->bsi_from.bb_val,
1611                                 &bsi->bsi_join_where.bb_val,
1612                                 (ber_len_t)STRLENOF( " AND " ), " AND ",
1613                                 &bsi->bsi_flt_where.bb_val );
1614
1615                 *query = bb.bb_val;
1616
1617         } else if ( rc < 0 ) {
1618                 /*
1619                  * Indicates that there's no possible way the filter matches
1620                  * anything.  No need to issue the query
1621                  */
1622                 free( query->bv_val );
1623                 BER_BVZERO( query );
1624         }
1625
1626         bsi->bsi_op->o_tmpfree( bsi->bsi_sel.bb_val.bv_val, bsi->bsi_op->o_tmpmemctx );
1627         BER_BVZERO( &bsi->bsi_sel.bb_val );
1628         bsi->bsi_sel.bb_len = 0;
1629         bsi->bsi_op->o_tmpfree( bsi->bsi_from.bb_val.bv_val, bsi->bsi_op->o_tmpmemctx );
1630         BER_BVZERO( &bsi->bsi_from.bb_val );
1631         bsi->bsi_from.bb_len = 0;
1632         bsi->bsi_op->o_tmpfree( bsi->bsi_join_where.bb_val.bv_val, bsi->bsi_op->o_tmpmemctx );
1633         BER_BVZERO( &bsi->bsi_join_where.bb_val );
1634         bsi->bsi_join_where.bb_len = 0;
1635         bsi->bsi_op->o_tmpfree( bsi->bsi_flt_where.bb_val.bv_val, bsi->bsi_op->o_tmpmemctx );
1636         BER_BVZERO( &bsi->bsi_flt_where.bb_val );
1637         bsi->bsi_flt_where.bb_len = 0;
1638
1639         Debug( LDAP_DEBUG_TRACE, "<==backsql_srch_query() returns %s\n",
1640                 query->bv_val ? query->bv_val : "NULL", 0, 0 );
1641
1642         return ( rc <= 0 ? 1 : 0 );
1643 }
1644
1645 static int
1646 backsql_oc_get_candidates( void *v_oc, void *v_bsi )
1647 {
1648         backsql_oc_map_rec      *oc = v_oc;
1649         backsql_srch_info       *bsi = v_bsi;
1650         Operation               *op = bsi->bsi_op;
1651         backsql_info            *bi = (backsql_info *)bsi->bsi_op->o_bd->be_private;
1652         struct berval           query;
1653         SQLHSTMT                sth = SQL_NULL_HSTMT;
1654         RETCODE                 rc;
1655         int                     res;
1656         BACKSQL_ROW_NTS         row;
1657         int                     i;
1658         int                     j;
1659         int                     n_candidates = bsi->bsi_n_candidates;
1660
1661         /*
1662          * + 1 because we need room for '%';
1663          * + 1 because we need room for ',' for LDAP_SCOPE_SUBORDINATE;
1664          * this makes a subtree
1665          * search for a DN BACKSQL_MAX_DN_LEN long legal
1666          * if it returns that DN only
1667          */
1668         char                    tmp_base_ndn[ BACKSQL_MAX_DN_LEN + 1 + 1 ];
1669
1670         bsi->bsi_status = LDAP_SUCCESS;
1671
1672         Debug( LDAP_DEBUG_TRACE, "==>backsql_oc_get_candidates(): oc=\"%s\"\n",
1673                         BACKSQL_OC_NAME( oc ), 0, 0 );
1674
1675         /* check for abandon */
1676         if ( op->o_abandon ) {
1677                 bsi->bsi_status = SLAPD_ABANDON;
1678                 return BACKSQL_AVL_STOP;
1679         }
1680
1681 #ifndef BACKSQL_ARBITRARY_KEY
1682         /* If paged results have already completed this objectClass, skip it */
1683         if ( get_pagedresults(op) > SLAP_CONTROL_IGNORED ) {
1684                 if ( oc->bom_id < PAGECOOKIE_TO_SQL_OC( ((PagedResultsState *)op->o_pagedresults_state)->ps_cookie ) )
1685                 {
1686                         return BACKSQL_AVL_CONTINUE;
1687                 }
1688         }
1689 #endif /* ! BACKSQL_ARBITRARY_KEY */
1690
1691         if ( bsi->bsi_n_candidates == -1 ) {
1692                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
1693                         "unchecked limit has been overcome\n", 0, 0, 0 );
1694                 /* should never get here */
1695                 assert( 0 );
1696                 bsi->bsi_status = LDAP_ADMINLIMIT_EXCEEDED;
1697                 return BACKSQL_AVL_STOP;
1698         }
1699
1700         bsi->bsi_oc = oc;
1701         res = backsql_srch_query( bsi, &query );
1702         if ( res ) {
1703                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
1704                         "error while constructing query for objectclass \"%s\"\n",
1705                         oc->bom_oc->soc_cname.bv_val, 0, 0 );
1706                 /*
1707                  * FIXME: need to separate errors from legally
1708                  * impossible filters
1709                  */
1710                 switch ( bsi->bsi_status ) {
1711                 case LDAP_SUCCESS:
1712                 case LDAP_UNDEFINED_TYPE:
1713                 case LDAP_NO_SUCH_OBJECT:
1714                         /* we are conservative... */
1715                 default:
1716                         bsi->bsi_status = LDAP_SUCCESS;
1717                         /* try next */
1718                         return BACKSQL_AVL_CONTINUE;
1719
1720                 case LDAP_ADMINLIMIT_EXCEEDED:
1721                 case LDAP_OTHER:
1722                         /* don't try any more */
1723                         return BACKSQL_AVL_STOP;
1724                 }
1725         }
1726
1727         if ( BER_BVISNULL( &query ) ) {
1728                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
1729                         "could not construct query for objectclass \"%s\"\n",
1730                         oc->bom_oc->soc_cname.bv_val, 0, 0 );
1731                 bsi->bsi_status = LDAP_SUCCESS;
1732                 return BACKSQL_AVL_CONTINUE;
1733         }
1734
1735         Debug( LDAP_DEBUG_TRACE, "Constructed query: %s\n",
1736                         query.bv_val, 0, 0 );
1737
1738         rc = backsql_Prepare( bsi->bsi_dbh, &sth, query.bv_val, 0 );
1739         bsi->bsi_op->o_tmpfree( query.bv_val, bsi->bsi_op->o_tmpmemctx );
1740         BER_BVZERO( &query );
1741         if ( rc != SQL_SUCCESS ) {
1742                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
1743                         "error preparing query\n", 0, 0, 0 );
1744                 backsql_PrintErrors( bi->sql_db_env, bsi->bsi_dbh, sth, rc );
1745                 bsi->bsi_status = LDAP_OTHER;
1746                 return BACKSQL_AVL_CONTINUE;
1747         }
1748
1749         Debug( LDAP_DEBUG_TRACE, "id: '" BACKSQL_IDNUMFMT "'\n",
1750                 bsi->bsi_oc->bom_id, 0, 0 );
1751
1752         rc = backsql_BindParamNumID( sth, 1, SQL_PARAM_INPUT,
1753                         &bsi->bsi_oc->bom_id );
1754         if ( rc != SQL_SUCCESS ) {
1755                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
1756                         "error binding objectclass id parameter\n", 0, 0, 0 );
1757                 bsi->bsi_status = LDAP_OTHER;
1758                 return BACKSQL_AVL_CONTINUE;
1759         }
1760
1761         switch ( bsi->bsi_scope ) {
1762         case LDAP_SCOPE_BASE:
1763         case BACKSQL_SCOPE_BASE_LIKE:
1764                 /*
1765                  * We do not accept DNs longer than BACKSQL_MAX_DN_LEN;
1766                  * however this should be handled earlier
1767                  */
1768                 if ( bsi->bsi_base_ndn->bv_len > BACKSQL_MAX_DN_LEN ) {
1769                         bsi->bsi_status = LDAP_OTHER;
1770                         return BACKSQL_AVL_CONTINUE;
1771                 }
1772
1773                 AC_MEMCPY( tmp_base_ndn, bsi->bsi_base_ndn->bv_val,
1774                                 bsi->bsi_base_ndn->bv_len + 1 );
1775
1776                 /* uppercase DN only if the stored DN can be uppercased
1777                  * for comparison */
1778                 if ( BACKSQL_CANUPPERCASE( bi ) ) {
1779                         ldap_pvt_str2upper( tmp_base_ndn );
1780                 }
1781
1782                 Debug( LDAP_DEBUG_TRACE, "(base)dn: \"%s\"\n",
1783                                 tmp_base_ndn, 0, 0 );
1784
1785                 rc = backsql_BindParamStr( sth, 2, SQL_PARAM_INPUT,
1786                                 tmp_base_ndn, BACKSQL_MAX_DN_LEN );
1787                 if ( rc != SQL_SUCCESS ) {
1788                         Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
1789                                 "error binding base_ndn parameter\n", 0, 0, 0 );
1790                         backsql_PrintErrors( bi->sql_db_env, bsi->bsi_dbh,
1791                                         sth, rc );
1792                         bsi->bsi_status = LDAP_OTHER;
1793                         return BACKSQL_AVL_CONTINUE;
1794                 }
1795                 break;
1796
1797         case LDAP_SCOPE_SUBORDINATE:
1798         case LDAP_SCOPE_SUBTREE:
1799         {
1800                 /* if short-cutting the search base,
1801                  * don't bind any parameter */
1802                 if ( bsi->bsi_use_subtree_shortcut ) {
1803                         break;
1804                 }
1805
1806                 /*
1807                  * We do not accept DNs longer than BACKSQL_MAX_DN_LEN;
1808                  * however this should be handled earlier
1809                  */
1810                 if ( bsi->bsi_base_ndn->bv_len > BACKSQL_MAX_DN_LEN ) {
1811                         bsi->bsi_status = LDAP_OTHER;
1812                         return BACKSQL_AVL_CONTINUE;
1813                 }
1814
1815                 /*
1816                  * Sets the parameters for the SQL built earlier
1817                  * NOTE that all the databases could actually use
1818                  * the TimesTen version, which would be cleaner
1819                  * and would also eliminate the need for the
1820                  * subtree_cond line in the configuration file.
1821                  * For now, I'm leaving it the way it is,
1822                  * so non-TimesTen databases use the original code.
1823                  * But at some point this should get cleaned up.
1824                  *
1825                  * If "dn" is being used, do a suffix search.
1826                  * If "dn_ru" is being used, do a prefix search.
1827                  */
1828                 if ( BACKSQL_HAS_LDAPINFO_DN_RU( bi ) ) {
1829                         tmp_base_ndn[ 0 ] = '\0';
1830
1831                         for ( i = 0, j = bsi->bsi_base_ndn->bv_len - 1;
1832                                         j >= 0; i++, j--) {
1833                                 tmp_base_ndn[ i ] = bsi->bsi_base_ndn->bv_val[ j ];
1834                         }
1835
1836                         if ( bsi->bsi_scope == LDAP_SCOPE_SUBORDINATE ) {
1837                                 tmp_base_ndn[ i++ ] = ',';
1838                         }
1839
1840                         tmp_base_ndn[ i ] = '%';
1841                         tmp_base_ndn[ i + 1 ] = '\0';
1842
1843                 } else {
1844                         i = 0;
1845
1846                         tmp_base_ndn[ i++ ] = '%';
1847
1848                         if ( bsi->bsi_scope == LDAP_SCOPE_SUBORDINATE ) {
1849                                 tmp_base_ndn[ i++ ] = ',';
1850                         }
1851
1852                         AC_MEMCPY( &tmp_base_ndn[ i ], bsi->bsi_base_ndn->bv_val,
1853                                 bsi->bsi_base_ndn->bv_len + 1 );
1854                 }
1855
1856                 /* uppercase DN only if the stored DN can be uppercased
1857                  * for comparison */
1858                 if ( BACKSQL_CANUPPERCASE( bi ) ) {
1859                         ldap_pvt_str2upper( tmp_base_ndn );
1860                 }
1861
1862                 if ( bsi->bsi_scope == LDAP_SCOPE_SUBORDINATE ) {
1863                         Debug( LDAP_DEBUG_TRACE, "(children)dn: \"%s\"\n",
1864                                 tmp_base_ndn, 0, 0 );
1865                 } else {
1866                         Debug( LDAP_DEBUG_TRACE, "(sub)dn: \"%s\"\n",
1867                                 tmp_base_ndn, 0, 0 );
1868                 }
1869
1870                 rc = backsql_BindParamStr( sth, 2, SQL_PARAM_INPUT,
1871                                 tmp_base_ndn, BACKSQL_MAX_DN_LEN );
1872                 if ( rc != SQL_SUCCESS ) {
1873                         Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
1874                                 "error binding base_ndn parameter (2)\n",
1875                                 0, 0, 0 );
1876                         backsql_PrintErrors( bi->sql_db_env, bsi->bsi_dbh,
1877                                         sth, rc );
1878                         bsi->bsi_status = LDAP_OTHER;
1879                         return BACKSQL_AVL_CONTINUE;
1880                 }
1881                 break;
1882         }
1883
1884         case LDAP_SCOPE_ONELEVEL:
1885                 assert( !BER_BVISNULL( &bsi->bsi_base_id.eid_ndn ) );
1886
1887                 Debug( LDAP_DEBUG_TRACE, "(one)id=" BACKSQL_IDFMT "\n",
1888                         BACKSQL_IDARG(bsi->bsi_base_id.eid_id), 0, 0 );
1889                 rc = backsql_BindParamID( sth, 2, SQL_PARAM_INPUT,
1890                                 &bsi->bsi_base_id.eid_id );
1891                 if ( rc != SQL_SUCCESS ) {
1892                         Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
1893                                 "error binding base id parameter\n", 0, 0, 0 );
1894                         bsi->bsi_status = LDAP_OTHER;
1895                         return BACKSQL_AVL_CONTINUE;
1896                 }
1897                 break;
1898         }
1899
1900         rc = SQLExecute( sth );
1901         if ( !BACKSQL_SUCCESS( rc ) ) {
1902                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
1903                         "error executing query\n", 0, 0, 0 );
1904                 backsql_PrintErrors( bi->sql_db_env, bsi->bsi_dbh, sth, rc );
1905                 SQLFreeStmt( sth, SQL_DROP );
1906                 bsi->bsi_status = LDAP_OTHER;
1907                 return BACKSQL_AVL_CONTINUE;
1908         }
1909
1910         backsql_BindRowAsStrings_x( sth, &row, bsi->bsi_op->o_tmpmemctx );
1911         rc = SQLFetch( sth );
1912         for ( ; BACKSQL_SUCCESS( rc ); rc = SQLFetch( sth ) ) {
1913                 struct berval           dn, pdn, ndn;
1914                 backsql_entryID         *c_id = NULL;
1915                 int                     ret;
1916
1917                 ber_str2bv( row.cols[ 3 ], 0, 0, &dn );
1918
1919                 if ( backsql_api_odbc2dn( bsi->bsi_op, bsi->bsi_rs, &dn ) ) {
1920                         continue;
1921                 }
1922
1923                 ret = dnPrettyNormal( NULL, &dn, &pdn, &ndn, op->o_tmpmemctx );
1924                 if ( dn.bv_val != row.cols[ 3 ] ) {
1925                         free( dn.bv_val );
1926                 }
1927
1928                 if ( ret != LDAP_SUCCESS ) {
1929                         continue;
1930                 }
1931
1932                 if ( bi->sql_baseObject && dn_match( &ndn, &bi->sql_baseObject->e_nname ) ) {
1933                         goto cleanup;
1934                 }
1935
1936                 c_id = (backsql_entryID *)op->o_tmpcalloc( 1,
1937                                 sizeof( backsql_entryID ), op->o_tmpmemctx );
1938 #ifdef BACKSQL_ARBITRARY_KEY
1939                 ber_str2bv_x( row.cols[ 0 ], 0, 1, &c_id->eid_id,
1940                                 op->o_tmpmemctx );
1941                 ber_str2bv_x( row.cols[ 1 ], 0, 1, &c_id->eid_keyval,
1942                                 op->o_tmpmemctx );
1943 #else /* ! BACKSQL_ARBITRARY_KEY */
1944                 if ( BACKSQL_STR2ID( &c_id->eid_id, row.cols[ 0 ], 0 ) != 0 ) {
1945                         goto cleanup;
1946                 }
1947                 if ( BACKSQL_STR2ID( &c_id->eid_keyval, row.cols[ 1 ], 0 ) != 0 ) {
1948                         goto cleanup;
1949                 }
1950 #endif /* ! BACKSQL_ARBITRARY_KEY */
1951                 c_id->eid_oc = bsi->bsi_oc;
1952                 c_id->eid_oc_id = bsi->bsi_oc->bom_id;
1953
1954                 c_id->eid_dn = pdn;
1955                 c_id->eid_ndn = ndn;
1956
1957                 /* append at end of list ... */
1958                 c_id->eid_next = NULL;
1959                 *bsi->bsi_id_listtail = c_id;
1960                 bsi->bsi_id_listtail = &c_id->eid_next;
1961
1962                 Debug( LDAP_DEBUG_TRACE, "backsql_oc_get_candidates(): "
1963                         "added entry id=" BACKSQL_IDFMT " keyval=" BACKSQL_IDFMT " dn=\"%s\"\n",
1964                         BACKSQL_IDARG(c_id->eid_id),
1965                         BACKSQL_IDARG(c_id->eid_keyval),
1966                         row.cols[ 3 ] );
1967
1968                 /* count candidates, for unchecked limit */
1969                 bsi->bsi_n_candidates--;
1970                 if ( bsi->bsi_n_candidates == -1 ) {
1971                         break;
1972                 }
1973                 continue;
1974
1975 cleanup:;
1976                 if ( !BER_BVISNULL( &pdn ) ) {
1977                         op->o_tmpfree( pdn.bv_val, op->o_tmpmemctx );
1978                 }
1979                 if ( !BER_BVISNULL( &ndn ) ) {
1980                         op->o_tmpfree( ndn.bv_val, op->o_tmpmemctx );
1981                 }
1982                 if ( c_id != NULL ) {
1983                         ch_free( c_id );
1984                 }
1985         }
1986         backsql_FreeRow_x( &row, bsi->bsi_op->o_tmpmemctx );
1987         SQLFreeStmt( sth, SQL_DROP );
1988
1989         Debug( LDAP_DEBUG_TRACE, "<==backsql_oc_get_candidates(): %d\n",
1990                         n_candidates - bsi->bsi_n_candidates, 0, 0 );
1991
1992         return ( bsi->bsi_n_candidates == -1 ? BACKSQL_AVL_STOP : BACKSQL_AVL_CONTINUE );
1993 }
1994
1995 int
1996 backsql_search( Operation *op, SlapReply *rs )
1997 {
1998         backsql_info            *bi = (backsql_info *)op->o_bd->be_private;
1999         SQLHDBC                 dbh = SQL_NULL_HDBC;
2000         int                     sres;
2001         Entry                   user_entry = { 0 },
2002                                 base_entry = { 0 };
2003         int                     manageDSAit = get_manageDSAit( op );
2004         time_t                  stoptime = 0;
2005         backsql_srch_info       bsi = { 0 };
2006         backsql_entryID         *eid = NULL;
2007         struct berval           nbase = BER_BVNULL;
2008 #ifndef BACKSQL_ARBITRARY_KEY
2009         ID                      lastid = 0;
2010 #endif /* ! BACKSQL_ARBITRARY_KEY */
2011
2012         Debug( LDAP_DEBUG_TRACE, "==>backsql_search(): "
2013                 "base=\"%s\", filter=\"%s\", scope=%d,",
2014                 op->o_req_ndn.bv_val,
2015                 op->ors_filterstr.bv_val,
2016                 op->ors_scope );
2017         Debug( LDAP_DEBUG_TRACE, " deref=%d, attrsonly=%d, "
2018                 "attributes to load: %s\n",
2019                 op->ors_deref,
2020                 op->ors_attrsonly,
2021                 op->ors_attrs == NULL ? "all" : "custom list" );
2022
2023         if ( op->o_req_ndn.bv_len > BACKSQL_MAX_DN_LEN ) {
2024                 Debug( LDAP_DEBUG_TRACE, "backsql_search(): "
2025                         "search base length (%ld) exceeds max length (%d)\n",
2026                         op->o_req_ndn.bv_len, BACKSQL_MAX_DN_LEN, 0 );
2027                 /*
2028                  * FIXME: a LDAP_NO_SUCH_OBJECT could be appropriate
2029                  * since it is impossible that such a long DN exists
2030                  * in the backend
2031                  */
2032                 rs->sr_err = LDAP_ADMINLIMIT_EXCEEDED;
2033                 send_ldap_result( op, rs );
2034                 return 1;
2035         }
2036
2037         sres = backsql_get_db_conn( op, &dbh );
2038         if ( sres != LDAP_SUCCESS ) {
2039                 Debug( LDAP_DEBUG_TRACE, "backsql_search(): "
2040                         "could not get connection handle - exiting\n",
2041                         0, 0, 0 );
2042                 rs->sr_err = sres;
2043                 rs->sr_text = sres == LDAP_OTHER ?  "SQL-backend error" : NULL;
2044                 send_ldap_result( op, rs );
2045                 return 1;
2046         }
2047
2048         /* compute it anyway; root does not use it */
2049         stoptime = op->o_time + op->ors_tlimit;
2050
2051         /* init search */
2052         bsi.bsi_e = &base_entry;
2053         rs->sr_err = backsql_init_search( &bsi, &op->o_req_ndn,
2054                         op->ors_scope,
2055                         stoptime, op->ors_filter,
2056                         dbh, op, rs, op->ors_attrs,
2057                         ( BACKSQL_ISF_MATCHED | BACKSQL_ISF_GET_ENTRY ) );
2058         switch ( rs->sr_err ) {
2059         case LDAP_SUCCESS:
2060                 break;
2061
2062         case LDAP_REFERRAL:
2063                 if ( manageDSAit && !BER_BVISNULL( &bsi.bsi_e->e_nname ) &&
2064                                 dn_match( &op->o_req_ndn, &bsi.bsi_e->e_nname ) )
2065                 {
2066                         rs->sr_err = LDAP_SUCCESS;
2067                         rs->sr_text = NULL;
2068                         rs->sr_matched = NULL;
2069                         if ( rs->sr_ref ) {
2070                                 ber_bvarray_free( rs->sr_ref );
2071                                 rs->sr_ref = NULL;
2072                         }
2073                         break;
2074                 }
2075
2076                 /* an entry was created; free it */
2077                 entry_clean( bsi.bsi_e );
2078
2079                 /* fall thru */
2080
2081         default:
2082                 if ( !BER_BVISNULL( &base_entry.e_nname )
2083                                 && !access_allowed( op, &base_entry,
2084                                         slap_schema.si_ad_entry, NULL,
2085                                         ACL_DISCLOSE, NULL ) )
2086                 {
2087                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
2088                         if ( rs->sr_ref ) {
2089                                 ber_bvarray_free( rs->sr_ref );
2090                                 rs->sr_ref = NULL;
2091                         }
2092                         rs->sr_matched = NULL;
2093                         rs->sr_text = NULL;
2094                 }
2095
2096                 send_ldap_result( op, rs );
2097
2098                 if ( rs->sr_ref ) {
2099                         ber_bvarray_free( rs->sr_ref );
2100                         rs->sr_ref = NULL;
2101                 }
2102
2103                 if ( !BER_BVISNULL( &base_entry.e_nname ) ) {
2104                         entry_clean( &base_entry );
2105                 }
2106
2107                 goto done;
2108         }
2109         /* NOTE: __NEW__ "search" access is required
2110          * on searchBase object */
2111         {
2112                 slap_mask_t     mask;
2113
2114                 if ( get_assert( op ) &&
2115                                 ( test_filter( op, &base_entry, get_assertion( op ) )
2116                                   != LDAP_COMPARE_TRUE ) )
2117                 {
2118                         rs->sr_err = LDAP_ASSERTION_FAILED;
2119
2120                 }
2121                 if ( ! access_allowed_mask( op, &base_entry,
2122                                         slap_schema.si_ad_entry,
2123                                         NULL, ACL_SEARCH, NULL, &mask ) )
2124                 {
2125                         if ( rs->sr_err == LDAP_SUCCESS ) {
2126                                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
2127                         }
2128                 }
2129
2130                 if ( rs->sr_err != LDAP_SUCCESS ) {
2131                         if ( !ACL_GRANT( mask, ACL_DISCLOSE ) ) {
2132                                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
2133                                 rs->sr_text = NULL;
2134                         }
2135                         send_ldap_result( op, rs );
2136                         goto done;
2137                 }
2138         }
2139
2140         bsi.bsi_e = NULL;
2141
2142         bsi.bsi_n_candidates =
2143                 ( op->ors_limit == NULL /* isroot == TRUE */ ? -2 :
2144                 ( op->ors_limit->lms_s_unchecked == -1 ? -2 :
2145                 ( op->ors_limit->lms_s_unchecked ) ) );
2146
2147 #ifndef BACKSQL_ARBITRARY_KEY
2148         /* If paged results are in effect, check the paging cookie */
2149         if ( get_pagedresults( op ) > SLAP_CONTROL_IGNORED ) {
2150                 rs->sr_err = parse_paged_cookie( op, rs );
2151                 if ( rs->sr_err != LDAP_SUCCESS ) {
2152                         send_ldap_result( op, rs );
2153                         goto done;
2154                 }
2155         }
2156 #endif /* ! BACKSQL_ARBITRARY_KEY */
2157
2158         switch ( bsi.bsi_scope ) {
2159         case LDAP_SCOPE_BASE:
2160         case BACKSQL_SCOPE_BASE_LIKE:
2161                 /*
2162                  * probably already found...
2163                  */
2164                 bsi.bsi_id_list = &bsi.bsi_base_id;
2165                 bsi.bsi_id_listtail = &bsi.bsi_base_id.eid_next;
2166                 break;
2167
2168         case LDAP_SCOPE_SUBTREE:
2169                 /*
2170                  * if baseObject is defined, and if it is the root
2171                  * of the search, add it to the candidate list
2172                  */
2173                 if ( bi->sql_baseObject && BACKSQL_IS_BASEOBJECT_ID( &bsi.bsi_base_id.eid_id ) )
2174                 {
2175                         bsi.bsi_id_list = &bsi.bsi_base_id;
2176                         bsi.bsi_id_listtail = &bsi.bsi_base_id.eid_next;
2177                 }
2178
2179                 /* FALLTHRU */
2180         default:
2181
2182                 /*
2183                  * for each objectclass we try to construct query which gets IDs
2184                  * of entries matching LDAP query filter and scope (or at least
2185                  * candidates), and get the IDs. Do this in ID order for paging.
2186                  */
2187                 avl_apply( bi->sql_oc_by_id, backsql_oc_get_candidates,
2188                                 &bsi, BACKSQL_AVL_STOP, AVL_INORDER );
2189
2190                 /* check for abandon */
2191                 if ( op->o_abandon ) {
2192                         eid = bsi.bsi_id_list;
2193                         rs->sr_err = SLAPD_ABANDON;
2194                         goto send_results;
2195                 }
2196         }
2197
2198         if ( op->ors_limit != NULL      /* isroot == FALSE */
2199                         && op->ors_limit->lms_s_unchecked != -1
2200                         && bsi.bsi_n_candidates == -1 )
2201         {
2202                 rs->sr_err = LDAP_ADMINLIMIT_EXCEEDED;
2203                 send_ldap_result( op, rs );
2204                 goto done;
2205         }
2206
2207         /*
2208          * now we load candidate entries (only those attributes
2209          * mentioned in attrs and filter), test it against full filter
2210          * and then send to client; don't free entry_id if baseObject...
2211          */
2212         for ( eid = bsi.bsi_id_list;
2213                 eid != NULL;
2214                 eid = backsql_free_entryID(
2215                         eid, eid == &bsi.bsi_base_id ? 0 : 1, op->o_tmpmemctx ) )
2216         {
2217                 int             rc;
2218                 Attribute       *a_hasSubordinate = NULL,
2219                                 *a_entryUUID = NULL,
2220                                 *a_entryCSN = NULL,
2221                                 **ap = NULL;
2222                 Entry           *e = NULL;
2223
2224                 /* check for abandon */
2225                 if ( op->o_abandon ) {
2226                         rs->sr_err = SLAPD_ABANDON;
2227                         goto send_results;
2228                 }
2229
2230                 /* check time limit */
2231                 if ( op->ors_tlimit != SLAP_NO_LIMIT
2232                                 && slap_get_time() > stoptime )
2233                 {
2234                         rs->sr_err = LDAP_TIMELIMIT_EXCEEDED;
2235                         rs->sr_ctrls = NULL;
2236                         rs->sr_ref = rs->sr_v2ref;
2237                         goto send_results;
2238                 }
2239
2240                 Debug(LDAP_DEBUG_TRACE, "backsql_search(): loading data "
2241                         "for entry id=" BACKSQL_IDFMT " oc_id=" BACKSQL_IDNUMFMT ", keyval=" BACKSQL_IDFMT "\n",
2242                         BACKSQL_IDARG(eid->eid_id),
2243                         eid->eid_oc_id,
2244                         BACKSQL_IDARG(eid->eid_keyval) );
2245
2246                 /* check scope */
2247                 switch ( op->ors_scope ) {
2248                 case LDAP_SCOPE_BASE:
2249                 case BACKSQL_SCOPE_BASE_LIKE:
2250                         if ( !dn_match( &eid->eid_ndn, &op->o_req_ndn ) ) {
2251                                 goto next_entry2;
2252                         }
2253                         break;
2254
2255                 case LDAP_SCOPE_ONE:
2256                 {
2257                         struct berval   rdn = eid->eid_ndn;
2258
2259                         rdn.bv_len -= op->o_req_ndn.bv_len + STRLENOF( "," );
2260                         if ( !dnIsOneLevelRDN( &rdn ) ) {
2261                                 goto next_entry2;
2262                         }
2263                         /* fall thru */
2264                 }
2265
2266                 case LDAP_SCOPE_SUBORDINATE:
2267                         /* discard the baseObject entry */
2268                         if ( dn_match( &eid->eid_ndn, &op->o_req_ndn ) ) {
2269                                 goto next_entry2;
2270                         }
2271                         /* FALLTHRU */
2272                 case LDAP_SCOPE_SUBTREE:
2273                         /* FIXME: this should never fail... */
2274                         if ( !dnIsSuffix( &eid->eid_ndn, &op->o_req_ndn ) ) {
2275                                 goto next_entry2;
2276                         }
2277                         break;
2278                 }
2279
2280                 if ( BACKSQL_IS_BASEOBJECT_ID( &eid->eid_id ) ) {
2281                         /* don't recollect baseObject... */
2282                         e = bi->sql_baseObject;
2283
2284                 } else if ( eid == &bsi.bsi_base_id ) {
2285                         /* don't recollect searchBase object... */
2286                         e = &base_entry;
2287
2288                 } else {
2289                         bsi.bsi_e = &user_entry;
2290                         rc = backsql_id2entry( &bsi, eid );
2291                         if ( rc != LDAP_SUCCESS ) {
2292                                 Debug( LDAP_DEBUG_TRACE, "backsql_search(): "
2293                                         "error %d in backsql_id2entry() "
2294                                         "- skipping\n", rc, 0, 0 );
2295                                 continue;
2296                         }
2297                         e = &user_entry;
2298                 }
2299
2300                 if ( !manageDSAit &&
2301                                 op->ors_scope != LDAP_SCOPE_BASE &&
2302                                 op->ors_scope != BACKSQL_SCOPE_BASE_LIKE &&
2303                                 is_entry_referral( e ) )
2304                 {
2305                         BerVarray refs;
2306
2307                         refs = get_entry_referrals( op, e );
2308                         if ( !refs ) {
2309                                 backsql_srch_info       bsi2 = { 0 };
2310                                 Entry                   user_entry2 = { 0 };
2311
2312                                 /* retry with the full entry... */
2313                                 bsi2.bsi_e = &user_entry2;
2314                                 rc = backsql_init_search( &bsi2,
2315                                                 &e->e_nname,
2316                                                 LDAP_SCOPE_BASE,
2317                                                 (time_t)(-1), NULL,
2318                                                 dbh, op, rs, NULL,
2319                                                 BACKSQL_ISF_GET_ENTRY );
2320                                 if ( rc == LDAP_SUCCESS ) {
2321                                         if ( is_entry_referral( &user_entry2 ) )
2322                                         {
2323                                                 refs = get_entry_referrals( op,
2324                                                                 &user_entry2 );
2325                                         } else {
2326                                                 rs->sr_err = LDAP_OTHER;
2327                                         }
2328                                         backsql_entry_clean( op, &user_entry2 );
2329                                 }
2330                                 if ( bsi2.bsi_attrs != NULL ) {
2331                                         op->o_tmpfree( bsi2.bsi_attrs,
2332                                                         op->o_tmpmemctx );
2333                                 }
2334                         }
2335
2336                         if ( refs ) {
2337                                 rs->sr_ref = referral_rewrite( refs,
2338                                                 &e->e_name,
2339                                                 &op->o_req_dn,
2340                                                 op->ors_scope );
2341                                 ber_bvarray_free( refs );
2342                         }
2343
2344                         if ( rs->sr_ref ) {
2345                                 rs->sr_err = LDAP_REFERRAL;
2346
2347                         } else {
2348                                 rs->sr_text = "bad referral object";
2349                         }
2350
2351                         rs->sr_entry = e;
2352                         rs->sr_matched = user_entry.e_name.bv_val;
2353                         send_search_reference( op, rs );
2354
2355                         ber_bvarray_free( rs->sr_ref );
2356                         rs->sr_ref = NULL;
2357                         rs->sr_matched = NULL;
2358                         rs->sr_entry = NULL;
2359                         if ( rs->sr_err == LDAP_REFERRAL ) {
2360                                 rs->sr_err = LDAP_SUCCESS;
2361                         }
2362
2363                         goto next_entry;
2364                 }
2365
2366                 /*
2367                  * We use this flag since we need to parse the filter
2368                  * anyway; we should have used the frontend API function
2369                  * filter_has_subordinates()
2370                  */
2371                 if ( bsi.bsi_flags & BSQL_SF_FILTER_HASSUBORDINATE ) {
2372                         rc = backsql_has_children( op, dbh, &e->e_nname );
2373
2374                         switch ( rc ) {
2375                         case LDAP_COMPARE_TRUE:
2376                         case LDAP_COMPARE_FALSE:
2377                                 a_hasSubordinate = slap_operational_hasSubordinate( rc == LDAP_COMPARE_TRUE );
2378                                 if ( a_hasSubordinate != NULL ) {
2379                                         for ( ap = &user_entry.e_attrs;
2380                                                         *ap;
2381                                                         ap = &(*ap)->a_next );
2382
2383                                         *ap = a_hasSubordinate;
2384                                 }
2385                                 rc = 0;
2386                                 break;
2387
2388                         default:
2389                                 Debug(LDAP_DEBUG_TRACE,
2390                                         "backsql_search(): "
2391                                         "has_children failed( %d)\n",
2392                                         rc, 0, 0 );
2393                                 rc = 1;
2394                                 goto next_entry;
2395                         }
2396                 }
2397
2398                 if ( bsi.bsi_flags & BSQL_SF_FILTER_ENTRYUUID ) {
2399                         a_entryUUID = backsql_operational_entryUUID( bi, eid );
2400                         if ( a_entryUUID != NULL ) {
2401                                 if ( ap == NULL ) {
2402                                         ap = &user_entry.e_attrs;
2403                                 }
2404
2405                                 for ( ; *ap; ap = &(*ap)->a_next );
2406
2407                                 *ap = a_entryUUID;
2408                         }
2409                 }
2410
2411 #ifdef BACKSQL_SYNCPROV
2412                 if ( bsi.bsi_flags & BSQL_SF_FILTER_ENTRYCSN ) {
2413                         a_entryCSN = backsql_operational_entryCSN( op );
2414                         if ( a_entryCSN != NULL ) {
2415                                 if ( ap == NULL ) {
2416                                         ap = &user_entry.e_attrs;
2417                                 }
2418
2419                                 for ( ; *ap; ap = &(*ap)->a_next );
2420
2421                                 *ap = a_entryCSN;
2422                         }
2423                 }
2424 #endif /* BACKSQL_SYNCPROV */
2425
2426                 if ( test_filter( op, e, op->ors_filter ) == LDAP_COMPARE_TRUE )
2427                 {
2428 #ifndef BACKSQL_ARBITRARY_KEY
2429                         /* If paged results are in effect, see if the page limit was exceeded */
2430                         if ( get_pagedresults(op) > SLAP_CONTROL_IGNORED ) {
2431                                 if ( rs->sr_nentries >= ((PagedResultsState *)op->o_pagedresults_state)->ps_size )
2432                                 {
2433                                         e = NULL;
2434                                         send_paged_response( op, rs, &lastid );
2435                                         goto done;
2436                                 }
2437                                 lastid = SQL_TO_PAGECOOKIE( eid->eid_id, eid->eid_oc_id );
2438                         }
2439 #endif /* ! BACKSQL_ARBITRARY_KEY */
2440                         rs->sr_attrs = op->ors_attrs;
2441                         rs->sr_operational_attrs = NULL;
2442                         rs->sr_entry = e;
2443                         e->e_private = (void *)eid;
2444                         rs->sr_flags = ( e == &user_entry ) ? REP_ENTRY_MODIFIABLE : 0;
2445                         /* FIXME: need the whole entry (ITS#3480) */
2446                         rs->sr_err = send_search_entry( op, rs );
2447                         e->e_private = NULL;
2448                         rs->sr_entry = NULL;
2449                         rs->sr_attrs = NULL;
2450                         rs->sr_operational_attrs = NULL;
2451
2452                         switch ( rs->sr_err ) {
2453                         case LDAP_UNAVAILABLE:
2454                                 /*
2455                                  * FIXME: send_search_entry failed;
2456                                  * better stop
2457                                  */
2458                                 Debug( LDAP_DEBUG_TRACE, "backsql_search(): "
2459                                         "connection lost\n", 0, 0, 0 );
2460                                 goto end_of_search;
2461
2462                         case LDAP_SIZELIMIT_EXCEEDED:
2463                         case LDAP_BUSY:
2464                                 goto send_results;
2465                         }
2466                 }
2467
2468 next_entry:;
2469                 if ( e == &user_entry ) {
2470                         backsql_entry_clean( op, &user_entry );
2471                 }
2472
2473 next_entry2:;
2474         }
2475
2476 end_of_search:;
2477         if ( rs->sr_nentries > 0 ) {
2478                 rs->sr_ref = rs->sr_v2ref;
2479                 rs->sr_err = (rs->sr_v2ref == NULL) ? LDAP_SUCCESS
2480                         : LDAP_REFERRAL;
2481
2482         } else {
2483                 rs->sr_err = bsi.bsi_status;
2484         }
2485
2486 send_results:;
2487         if ( rs->sr_err != SLAPD_ABANDON ) {
2488 #ifndef BACKSQL_ARBITRARY_KEY
2489                 if ( get_pagedresults(op) > SLAP_CONTROL_IGNORED ) {
2490                         send_paged_response( op, rs, NULL );
2491                 } else
2492 #endif /* ! BACKSQL_ARBITRARY_KEY */
2493                 {
2494                         send_ldap_result( op, rs );
2495                 }
2496         }
2497
2498         /* cleanup in case of abandon */
2499         for ( ; eid != NULL;
2500                 eid = backsql_free_entryID(
2501                         eid, eid == &bsi.bsi_base_id ? 0 : 1, op->o_tmpmemctx ) )
2502                 ;
2503
2504         backsql_entry_clean( op, &base_entry );
2505
2506         /* in case we got here accidentally */
2507         backsql_entry_clean( op, &user_entry );
2508
2509         if ( rs->sr_v2ref ) {
2510                 ber_bvarray_free( rs->sr_v2ref );
2511                 rs->sr_v2ref = NULL;
2512         }
2513
2514 #ifdef BACKSQL_SYNCPROV
2515         if ( op->o_sync ) {
2516                 Operation       op2 = *op;
2517                 SlapReply       rs2 = { REP_RESULT };
2518                 Entry           *e = entry_alloc();
2519                 slap_callback   cb = { 0 };
2520
2521                 op2.o_tag = LDAP_REQ_ADD;
2522                 op2.o_bd = select_backend( &op->o_bd->be_nsuffix[0], 0 );
2523                 op2.ora_e = e;
2524                 op2.o_callback = &cb;
2525
2526                 ber_dupbv( &e->e_name, op->o_bd->be_suffix );
2527                 ber_dupbv( &e->e_nname, op->o_bd->be_nsuffix );
2528
2529                 cb.sc_response = slap_null_cb;
2530
2531                 op2.o_bd->be_add( &op2, &rs2 );
2532
2533                 if ( op2.ora_e == e )
2534                         entry_free( e );
2535         }
2536 #endif /* BACKSQL_SYNCPROV */
2537
2538 done:;
2539         (void)backsql_free_entryID( &bsi.bsi_base_id, 0, op->o_tmpmemctx );
2540
2541         if ( bsi.bsi_attrs != NULL ) {
2542                 op->o_tmpfree( bsi.bsi_attrs, op->o_tmpmemctx );
2543         }
2544
2545         if ( !BER_BVISNULL( &nbase )
2546                         && nbase.bv_val != op->o_req_ndn.bv_val )
2547         {
2548                 ch_free( nbase.bv_val );
2549         }
2550
2551         /* restore scope ... FIXME: this should be done before ANY
2552          * frontend call that uses op */
2553         if ( op->ors_scope == BACKSQL_SCOPE_BASE_LIKE ) {
2554                 op->ors_scope = LDAP_SCOPE_BASE;
2555         }
2556
2557         Debug( LDAP_DEBUG_TRACE, "<==backsql_search()\n", 0, 0, 0 );
2558
2559         return rs->sr_err;
2560 }
2561
2562 /* return LDAP_SUCCESS IFF we can retrieve the specified entry.
2563  */
2564 int
2565 backsql_entry_get(
2566                 Operation               *op,
2567                 struct berval           *ndn,
2568                 ObjectClass             *oc,
2569                 AttributeDescription    *at,
2570                 int                     rw,
2571                 Entry                   **ent )
2572 {
2573         backsql_srch_info       bsi = { 0 };
2574         SQLHDBC                 dbh = SQL_NULL_HDBC;
2575         int                     rc;
2576         SlapReply               rs = { 0 };
2577         AttributeName           anlist[ 2 ];
2578
2579         *ent = NULL;
2580
2581         rc = backsql_get_db_conn( op, &dbh );
2582         if ( rc != LDAP_SUCCESS ) {
2583                 return rc;
2584         }
2585
2586         if ( at ) {
2587                 anlist[ 0 ].an_name = at->ad_cname;
2588                 anlist[ 0 ].an_desc = at;
2589                 BER_BVZERO( &anlist[ 1 ].an_name );
2590         }
2591
2592         bsi.bsi_e = entry_alloc();
2593         rc = backsql_init_search( &bsi,
2594                         ndn,
2595                         LDAP_SCOPE_BASE,
2596                         (time_t)(-1), NULL,
2597                         dbh, op, &rs, at ? anlist : NULL,
2598                         BACKSQL_ISF_GET_ENTRY );
2599
2600         if ( !BER_BVISNULL( &bsi.bsi_base_id.eid_ndn ) ) {
2601                 (void)backsql_free_entryID( &bsi.bsi_base_id, 0, op->o_tmpmemctx );
2602         }
2603
2604         if ( rc == LDAP_SUCCESS ) {
2605
2606 #if 0 /* not supported at present */
2607                 /* find attribute values */
2608                 if ( is_entry_alias( bsi.bsi_e ) ) {
2609                         Debug( LDAP_DEBUG_ACL,
2610                                 "<= backsql_entry_get: entry is an alias\n",
2611                                 0, 0, 0 );
2612                         rc = LDAP_ALIAS_PROBLEM;
2613                         goto return_results;
2614                 }
2615 #endif
2616
2617                 if ( is_entry_referral( bsi.bsi_e ) ) {
2618                         Debug( LDAP_DEBUG_ACL,
2619                                 "<= backsql_entry_get: entry is a referral\n",
2620                                 0, 0, 0 );
2621                         rc = LDAP_REFERRAL;
2622                         goto return_results;
2623                 }
2624
2625                 if ( oc && !is_entry_objectclass( bsi.bsi_e, oc, 0 ) ) {
2626                         Debug( LDAP_DEBUG_ACL,
2627                                         "<= backsql_entry_get: "
2628                                         "failed to find objectClass\n",
2629                                         0, 0, 0 );
2630                         rc = LDAP_NO_SUCH_ATTRIBUTE;
2631                         goto return_results;
2632                 }
2633
2634                 *ent = bsi.bsi_e;
2635         }
2636
2637 return_results:;
2638         if ( bsi.bsi_attrs != NULL ) {
2639                 op->o_tmpfree( bsi.bsi_attrs, op->o_tmpmemctx );
2640         }
2641
2642         if ( rc != LDAP_SUCCESS ) {
2643                 if ( bsi.bsi_e ) {
2644                         entry_free( bsi.bsi_e );
2645                 }
2646         }
2647
2648         return rc;
2649 }
2650
2651 void
2652 backsql_entry_clean(
2653                 Operation       *op,
2654                 Entry           *e )
2655 {
2656         void *ctx;
2657
2658         ctx = ldap_pvt_thread_pool_context();
2659
2660         if ( ctx == NULL || ctx != op->o_tmpmemctx ) {
2661                 if ( !BER_BVISNULL( &e->e_name ) ) {
2662                         op->o_tmpfree( e->e_name.bv_val, op->o_tmpmemctx );
2663                         BER_BVZERO( &e->e_name );
2664                 }
2665
2666                 if ( !BER_BVISNULL( &e->e_nname ) ) {
2667                         op->o_tmpfree( e->e_nname.bv_val, op->o_tmpmemctx );
2668                         BER_BVZERO( &e->e_nname );
2669                 }
2670         }
2671
2672         entry_clean( e );
2673 }
2674
2675 int
2676 backsql_entry_release(
2677                 Operation       *op,
2678                 Entry           *e,
2679                 int             rw )
2680 {
2681         backsql_entry_clean( op, e );
2682
2683         entry_free( e );
2684
2685         return 0;
2686 }
2687
2688 #ifndef BACKSQL_ARBITRARY_KEY
2689 /* This function is copied verbatim from back-bdb/search.c */
2690 static int
2691 parse_paged_cookie( Operation *op, SlapReply *rs )
2692 {
2693         int             rc = LDAP_SUCCESS;
2694         PagedResultsState *ps = op->o_pagedresults_state;
2695
2696         /* this function must be invoked only if the pagedResults
2697          * control has been detected, parsed and partially checked
2698          * by the frontend */
2699         assert( get_pagedresults( op ) > SLAP_CONTROL_IGNORED );
2700
2701         /* cookie decoding/checks deferred to backend... */
2702         if ( ps->ps_cookieval.bv_len ) {
2703                 PagedResultsCookie reqcookie;
2704                 if( ps->ps_cookieval.bv_len != sizeof( reqcookie ) ) {
2705                         /* bad cookie */
2706                         rs->sr_text = "paged results cookie is invalid";
2707                         rc = LDAP_PROTOCOL_ERROR;
2708                         goto done;
2709                 }
2710
2711                 AC_MEMCPY( &reqcookie, ps->ps_cookieval.bv_val, sizeof( reqcookie ));
2712
2713                 if ( reqcookie > ps->ps_cookie ) {
2714                         /* bad cookie */
2715                         rs->sr_text = "paged results cookie is invalid";
2716                         rc = LDAP_PROTOCOL_ERROR;
2717                         goto done;
2718
2719                 } else if ( reqcookie < ps->ps_cookie ) {
2720                         rs->sr_text = "paged results cookie is invalid or old";
2721                         rc = LDAP_UNWILLING_TO_PERFORM;
2722                         goto done;
2723                 }
2724
2725         } else {
2726                 /* Initial request.  Initialize state. */
2727                 ps->ps_cookie = 0;
2728                 ps->ps_count = 0;
2729         }
2730
2731 done:;
2732
2733         return rc;
2734 }
2735
2736 /* This function is copied nearly verbatim from back-bdb/search.c */
2737 static void
2738 send_paged_response(
2739         Operation       *op,
2740         SlapReply       *rs,
2741         ID              *lastid )
2742 {
2743         LDAPControl     ctrl, *ctrls[2];
2744         BerElementBuffer berbuf;
2745         BerElement      *ber = (BerElement *)&berbuf;
2746         PagedResultsCookie respcookie;
2747         struct berval cookie;
2748
2749         Debug(LDAP_DEBUG_ARGS,
2750                 "send_paged_response: lastid=0x%08lx nentries=%d\n",
2751                 lastid ? *lastid : 0, rs->sr_nentries, NULL );
2752
2753         BER_BVZERO( &ctrl.ldctl_value );
2754         ctrls[0] = &ctrl;
2755         ctrls[1] = NULL;
2756
2757         ber_init2( ber, NULL, LBER_USE_DER );
2758
2759         if ( lastid ) {
2760                 respcookie = ( PagedResultsCookie )(*lastid);
2761                 cookie.bv_len = sizeof( respcookie );
2762                 cookie.bv_val = (char *)&respcookie;
2763
2764         } else {
2765                 respcookie = ( PagedResultsCookie )0;
2766                 BER_BVSTR( &cookie, "" );
2767         }
2768
2769         op->o_conn->c_pagedresults_state.ps_cookie = respcookie;
2770         op->o_conn->c_pagedresults_state.ps_count =
2771                 ((PagedResultsState *)op->o_pagedresults_state)->ps_count +
2772                 rs->sr_nentries;
2773
2774         /* return size of 0 -- no estimate */
2775         ber_printf( ber, "{iO}", 0, &cookie );
2776
2777         if ( ber_flatten2( ber, &ctrls[0]->ldctl_value, 0 ) == -1 ) {
2778                 goto done;
2779         }
2780
2781         ctrls[0]->ldctl_oid = LDAP_CONTROL_PAGEDRESULTS;
2782         ctrls[0]->ldctl_iscritical = 0;
2783
2784         rs->sr_ctrls = ctrls;
2785         rs->sr_err = LDAP_SUCCESS;
2786         send_ldap_result( op, rs );
2787         rs->sr_ctrls = NULL;
2788
2789 done:
2790         (void) ber_free_buf( ber );
2791 }
2792 #endif /* ! BACKSQL_ARBITRARY_KEY */