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

   1 /* search.c - search operation */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2000-2004 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16
  17 #include "portable.h"
  18
  19 #include <stdio.h>
  20 #include <ac/string.h>
  21
  22 #include "back-bdb.h"
  23 #include "idl.h"
  24 #include "external.h"
  25
  26 static int base_candidate(
  27         BackendDB       *be,
  28         Entry   *e,
  29         ID              *ids );
  30
  31 static int search_candidates(
  32         Operation *stackop,     /* op with the current threadctx/slab cache */
  33         Operation *sop,         /* search op */
  34         SlapReply *rs,
  35         Entry *e,
  36         u_int32_t locker,
  37         ID      *ids,
  38         ID      *scopes );
  39
  40 static void send_paged_response(
  41         Operation *op,
  42         SlapReply *rs,
  43         ID  lastid,
  44         int tentries );
  45
  46 /* Dereference aliases for a single alias entry. Return the final
  47  * dereferenced entry on success, NULL on any failure.
  48  */
  49 static Entry * deref_base (
  50         Operation *op,
  51         SlapReply *rs,
  52         Entry *e,
  53         Entry **matched,
  54         u_int32_t locker,
  55         DB_LOCK *lock,
  56         ID      *tmp,
  57         ID      *visited )
  58 {
  59         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
  60         struct berval ndn;
  61         EntryInfo *ei;
  62         DB_LOCK lockr;
  63
  64         rs->sr_err = LDAP_ALIAS_DEREF_PROBLEM;
  65         rs->sr_text = "maximum deref depth exceeded";
  66
  67         while (BDB_IDL_N(tmp) < op->o_bd->be_max_deref_depth) {
  68                 /* Remember the last entry we looked at, so we can
  69                  * report broken links
  70                  */
  71                 *matched = e;
  72
  73                 /* If this is part of a subtree or onelevel search,
  74                  * have we seen this ID before? If so, quit.
  75                  */
  76                 if ( visited && bdb_idl_insert( visited, e->e_id ) ) {
  77                         e = NULL;
  78                         break;
  79                 }
  80
  81                 /* If we've seen this ID during this deref iteration,
  82                  * we've hit a loop.
  83                  */
  84                 if ( bdb_idl_insert( tmp, e->e_id ) ) {
  85                         rs->sr_err = LDAP_ALIAS_PROBLEM;
  86                         rs->sr_text = "circular alias";
  87                         e = NULL;
  88                         break;
  89                 }
  90
  91                 /* If there was a problem getting the aliasedObjectName,
  92                  * get_alias_dn will have set the error status.
  93                  */
  94                 if ( get_alias_dn(e, &ndn, &rs->sr_err, &rs->sr_text) ) {
  95                         e = NULL;
  96                         break;
  97                 }
  98
  99                 rs->sr_err = bdb_dn2entry( op, NULL, &ndn, &ei,
 100                         0, locker, &lockr );
 101
 102                 if ( ei ) {
 103                         e = ei->bei_e;
 104                 } else {
 105                         e = NULL;
 106                 }
 107
 108                 if (!e) {
 109                         rs->sr_err = LDAP_ALIAS_PROBLEM;
 110                         rs->sr_text = "aliasedObject not found";
 111                         break;
 112                 }
 113
 114                 /* Free the previous entry, continue to work with the
 115                  * one we just retrieved.
 116                  */
 117                 bdb_cache_return_entry_r( bdb->bi_dbenv, &bdb->bi_cache,
 118                         *matched, lock);
 119                 *lock = lockr;
 120
 121                 /* We found a regular entry. Return this to the caller. The
 122                  * entry is still locked for Read.
 123                  */
 124                 if (!is_entry_alias(e)) {
 125                         rs->sr_err = LDAP_SUCCESS;
 126                         rs->sr_text = NULL;
 127                         break;
 128                 }
 129         }
 130         return e;
 131 }
 132
 133 /* Look for and dereference all aliases within the search scope. Adds
 134  * the dereferenced entries to the "ids" list. Requires "stack" to be
 135  * able to hold 8 levels of DB_SIZE IDLs. Of course we're hardcoded to
 136  * require a minimum of 8 UM_SIZE IDLs so this is never a problem.
 137  */
 138 static int search_aliases(
 139         Operation *op,
 140         SlapReply *rs,
 141         Entry *e,
 142         u_int32_t locker,
 143         ID *ids,
 144         ID *scopes,
 145         ID *stack )
 146 {
 147         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
 148         ID *aliases, *curscop, *subscop, *visited, *newsubs, *oldsubs, *tmp;
 149         ID cursora, ida, cursoro, ido, *subscop2;
 150         Entry *matched, *a;
 151         EntryInfo *ei;
 152         struct berval bv_alias = { sizeof("alias")-1, "alias" };
 153         AttributeAssertion aa_alias;
 154         Filter  af;
 155         DB_LOCK locka, lockr;
 156         int first = 1;
 157
 158         aliases = stack;        /* IDL of all aliases in the database */
 159         curscop = aliases + BDB_IDL_DB_SIZE;    /* Aliases in the current scope */
 160         subscop = curscop + BDB_IDL_DB_SIZE;    /* The current scope */
 161         visited = subscop + BDB_IDL_DB_SIZE;    /* IDs we've seen in this search */
 162         newsubs = visited + BDB_IDL_DB_SIZE;    /* New subtrees we've added */
 163         oldsubs = newsubs + BDB_IDL_DB_SIZE;    /* Subtrees added previously */
 164         tmp = oldsubs + BDB_IDL_DB_SIZE;        /* Scratch space for deref_base() */
 165
 166         /* A copy of subscop, because subscop gets clobbered by
 167          * the bdb_idl_union/intersection routines
 168          */
 169         subscop2 = tmp + BDB_IDL_DB_SIZE;
 170
 171         af.f_choice = LDAP_FILTER_EQUALITY;
 172         af.f_ava = &aa_alias;
 173         af.f_av_desc = slap_schema.si_ad_objectClass;
 174         af.f_av_value = bv_alias;
 175         af.f_next = NULL;
 176
 177         /* Find all aliases in database */
 178         BDB_IDL_ZERO( aliases );
 179         rs->sr_err = bdb_filter_candidates( op, &af, aliases,
 180                 curscop, visited );
 181         if (rs->sr_err != LDAP_SUCCESS) {
 182                 return rs->sr_err;
 183         }
 184         oldsubs[0] = 1;
 185         oldsubs[1] = e->e_id;
 186
 187         BDB_IDL_ZERO( ids );
 188         BDB_IDL_ZERO( visited );
 189         BDB_IDL_ZERO( newsubs );
 190
 191         cursoro = 0;
 192         ido = bdb_idl_first( oldsubs, &cursoro );
 193
 194         for (;;) {
 195                 /* Set curscop to only the aliases in the current scope. Start with
 196                  * all the aliases, obtain the IDL for the current scope, and then
 197                  * get the intersection of these two IDLs. Add the current scope
 198                  * to the cumulative list of candidates.
 199                  */
 200                 BDB_IDL_CPY( curscop, aliases );
 201                 rs->sr_err = bdb_dn2idl( op, e, subscop,
 202                         subscop2+BDB_IDL_DB_SIZE );
 203                 if (first) {
 204                         first = 0;
 205                 } else {
 206                         bdb_cache_return_entry_r (bdb->bi_dbenv, &bdb->bi_cache, e, &locka);
 207                 }
 208                 BDB_IDL_CPY(subscop2, subscop);
 209                 rs->sr_err = bdb_idl_intersection(curscop, subscop);
 210                 bdb_idl_union( ids, subscop2 );
 211
 212                 /* Dereference all of the aliases in the current scope. */
 213                 cursora = 0;
 214                 for (ida = bdb_idl_first(curscop, &cursora); ida != NOID;
 215                         ida = bdb_idl_next(curscop, &cursora))
 216                 {
 217                         ei = NULL;
 218                         rs->sr_err = bdb_cache_find_id(op, NULL,
 219                                 ida, &ei, 0, locker, &lockr );
 220                         if (rs->sr_err != LDAP_SUCCESS) {
 221                                 continue;
 222                         }
 223                         a = ei->bei_e;
 224
 225                         /* This should only happen if the curscop IDL has maxed out and
 226                          * turned into a range that spans IDs indiscriminately
 227                          */
 228                         if (!is_entry_alias(a)) {
 229                                 bdb_cache_return_entry_r (bdb->bi_dbenv, &bdb->bi_cache,
 230                                         a, &lockr);
 231                                 continue;
 232                         }
 233
 234                         /* Actually dereference the alias */
 235                         BDB_IDL_ZERO(tmp);
 236                         a = deref_base( op, rs, a, &matched, locker, &lockr,
 237                                 tmp, visited );
 238                         if (a) {
 239                                 /* If the target was not already in our current candidates,
 240                                  * make note of it in the newsubs list. Also
 241                                  * set it in the scopes list so that bdb_search
 242                                  * can check it.
 243                                  */
 244                                 if (bdb_idl_insert(ids, a->e_id) == 0) {
 245                                         bdb_idl_insert(newsubs, a->e_id);
 246                                         bdb_idl_insert(scopes, a->e_id);
 247                                 }
 248                                 bdb_cache_return_entry_r( bdb->bi_dbenv, &bdb->bi_cache,
 249                                         a, &lockr);
 250
 251                         } else if (matched) {
 252                                 /* Alias could not be dereferenced, or it deref'd to
 253                                  * an ID we've already seen. Ignore it.
 254                                  */
 255                                 bdb_cache_return_entry_r( bdb->bi_dbenv, &bdb->bi_cache,
 256                                         matched, &lockr );
 257                                 rs->sr_text = NULL;
 258                         }
 259                 }
 260                 /* If this is a OneLevel search, we're done; oldsubs only had one
 261                  * ID in it. For a Subtree search, oldsubs may be a list of scope IDs.
 262                  */
 263                 if ( op->ors_scope == LDAP_SCOPE_ONELEVEL ) break;
 264 nextido:
 265                 ido = bdb_idl_next( oldsubs, &cursoro );
 266
 267                 /* If we're done processing the old scopes, did we add any new
 268                  * scopes in this iteration? If so, go back and do those now.
 269                  */
 270                 if (ido == NOID) {
 271                         if (BDB_IDL_IS_ZERO(newsubs)) break;
 272                         BDB_IDL_CPY(oldsubs, newsubs);
 273                         BDB_IDL_ZERO(newsubs);
 274                         cursoro = 0;
 275                         ido = bdb_idl_first( oldsubs, &cursoro );
 276                 }
 277
 278                 /* Find the entry corresponding to the next scope. If it can't
 279                  * be found, ignore it and move on. This should never happen;
 280                  * we should never see the ID of an entry that doesn't exist.
 281                  * Set the name so that the scope's IDL can be retrieved.
 282                  */
 283                 ei = NULL;
 284                 rs->sr_err = bdb_cache_find_id(op, NULL, ido, &ei,
 285                         0, locker, &locka );
 286                 if ( rs->sr_err != LDAP_SUCCESS ) goto nextido;
 287                 e = ei->bei_e;
 288         }
 289         return rs->sr_err;
 290 }
 291
 292 #define is_sync_protocol(op)    \
 293         ((op)->o_sync_mode & SLAP_SYNC_REFRESH_AND_PERSIST)
 294
 295 #define IS_BDB_REPLACE(type) (( type == LDAP_PSEARCH_BY_DELETE ) || \
 296         ( type == LDAP_PSEARCH_BY_SCOPEOUT ))
 297 #define IS_PSEARCH (op != sop)
 298
 299 static Operation *
 300 bdb_drop_psearch( Operation *op, ber_int_t msgid )
 301 {
 302         Operation       *ps_list;
 303         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
 304
 305         LDAP_LIST_FOREACH ( ps_list, &bdb->bi_psearch_list, o_ps_link ) {
 306                 if ( ps_list->o_connid == op->o_connid ) {
 307                         if ( ps_list->o_msgid == msgid ) {
 308                                 ps_list->o_abandon = 1;
 309                                 LDAP_LIST_REMOVE( ps_list, o_ps_link );
 310                                 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 311                                 LDAP_STAILQ_REMOVE( &op->o_conn->c_ops, ps_list,
 312                                         slap_op, o_next );
 313                                 LDAP_STAILQ_NEXT( ps_list, o_next ) = NULL;
 314                                 op->o_conn->c_n_ops_executing--;
 315                                 op->o_conn->c_n_ops_completed++;
 316                                 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 317                                 return ps_list;
 318                         }
 319                 }
 320         }
 321
 322         return NULL;
 323 }
 324
 325 int
 326 bdb_abandon( Operation *op, SlapReply *rs )
 327 {
 328         Operation       *ps;
 329
 330         ps = bdb_drop_psearch( op, op->oq_abandon.rs_msgid );
 331         if ( ps ) {
 332                 if ( ps->o_tmpmemctx ) {
 333                         slap_sl_mem_destroy( NULL, ps->o_tmpmemctx );
 334                 }
 335                 slap_op_free ( ps );
 336                 return LDAP_SUCCESS;
 337         }
 338         return LDAP_UNAVAILABLE;
 339 }
 340
 341 int
 342 bdb_cancel( Operation *op, SlapReply *rs )
 343 {
 344         Operation       *ps;
 345
 346         ps = bdb_drop_psearch( op, op->oq_cancel.rs_msgid );
 347         if ( ps ) {
 348                 rs->sr_err = LDAP_CANCELLED;
 349                 send_ldap_result( ps, rs );
 350                 if ( ps->o_tmpmemctx ) {
 351                         slap_sl_mem_destroy( NULL, ps->o_tmpmemctx );
 352                 }
 353                 slap_op_free ( ps );
 354                 return LDAP_SUCCESS;
 355         }
 356         return LDAP_UNAVAILABLE;
 357 }
 358
 359 int bdb_search( Operation *op, SlapReply *rs )
 360 {
 361         return bdb_do_search( op, rs, op, NULL, 0 );
 362 }
 363
 364 /* For persistent searches, op is the currently executing operation,
 365  * sop is the persistent search. For regular searches, sop = op.
 366  */
 367 int
 368 bdb_do_search( Operation *op, SlapReply *rs, Operation *sop,
 369         Entry *ps_e, int ps_type )
 370 {
 371         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
 372         time_t          stoptime;
 373         ID              id, cursor;
 374         ID              candidates[BDB_IDL_UM_SIZE];
 375         ID              scopes[BDB_IDL_DB_SIZE];
 376         Entry           *e = NULL, base, e_root = {0};
 377         Entry           *matched = NULL;
 378         EntryInfo       *ei, ei_root = {0};
 379         struct berval   realbase = BER_BVNULL;
 380         int             manageDSAit;
 381         int             tentries = 0;
 382         ID              lastid = NOID;
 383         AttributeName   *attrs;
 384
 385         Filter          contextcsnand, contextcsnle, cookief, csnfnot,
 386                         csnfeq, csnfand, csnfge;
 387         AttributeAssertion aa_ge, aa_eq, aa_le;
 388         struct berval   *search_context_csn = NULL;
 389         DB_LOCK         ctxcsn_lock;
 390         LDAPControl     *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
 391         int             num_ctrls = 0;
 392         AttributeName   uuid_attr[2];
 393         int             rc_sync = 0;
 394         int             entry_sync_state = -1;
 395         AttributeName   null_attr;
 396         int             no_sync_state_change = 0;
 397
 398         u_int32_t       locker = 0;
 399         DB_LOCK         lock;
 400
 401         Operation       *ps_list;
 402         int                     sync_send_present_mode = 1;
 403         int                     match;
 404         MatchingRule *mr;
 405         const char *text;
 406         int                     slog_found = 0;
 407
 408         BerVarray       syncUUID_set = NULL;
 409         int                     syncUUID_set_cnt = 0;
 410
 411 #ifdef NEW_LOGGING
 412         LDAP_LOG( OPERATION, ENTRY, "bdb_search\n", 0, 0, 0 );
 413 #else
 414         Debug( LDAP_DEBUG_TRACE, "=> bdb_search\n",
 415                 0, 0, 0);
 416 #endif
 417         attrs = sop->oq_search.rs_attrs;
 418
 419         if ( !IS_PSEARCH && sop->o_sync_mode & SLAP_SYNC_REFRESH_AND_PERSIST ) {
 420                 struct slap_session_entry *sent;
 421                 if ( sop->o_sync_state.sid >= 0 ) {
 422                         LDAP_LIST_FOREACH( sent, &bdb->bi_session_list, se_link ) {
 423                                 if ( sent->se_id == sop->o_sync_state.sid ) {
 424                                         sop->o_sync_slog_size = sent->se_size;
 425                                         break;
 426                                 }
 427                         }
 428                 }
 429         }
 430
 431         /* psearch needs to be registered before refresh begins */
 432         /* psearch and refresh transmission is serialized in send_ldap_ber() */
 433         if ( !IS_PSEARCH && sop->o_sync_mode & SLAP_SYNC_PERSIST ) {
 434                 ldap_pvt_thread_rdwr_wlock( &bdb->bi_pslist_rwlock );
 435                 LDAP_LIST_INSERT_HEAD( &bdb->bi_psearch_list, sop, o_ps_link );
 436                 ldap_pvt_thread_rdwr_wunlock( &bdb->bi_pslist_rwlock );
 437
 438         } else if ( !IS_PSEARCH && sop->o_sync_mode & SLAP_SYNC_REFRESH_AND_PERSIST
 439                 && sop->o_sync_slog_size >= 0 )
 440         {
 441                 ldap_pvt_thread_rdwr_wlock( &bdb->bi_pslist_rwlock );
 442                 LDAP_LIST_FOREACH( ps_list, &bdb->bi_psearch_list, o_ps_link ) {
 443                         if ( ps_list->o_sync_slog_size >= 0 ) {
 444                                 if ( ps_list->o_sync_state.sid == sop->o_sync_state.sid ) {
 445                                         slog_found = 1;
 446                                         break;
 447                                 }
 448                         }
 449                 }
 450
 451                 if ( slog_found ) {
 452                         if ( ps_list->o_sync_slog_omitcsn.bv_len != 0 ) {
 453                                 mr = slap_schema.si_ad_entryCSN->ad_type->sat_ordering;
 454                                 if ( sop->o_sync_state.ctxcsn &&
 455                                         sop->o_sync_state.ctxcsn->bv_val != NULL )
 456                                 {
 457                                         value_match( &match, slap_schema.si_ad_entryCSN, mr,
 458                                                 SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
 459                                                 sop->o_sync_state.ctxcsn,
 460                                                 &ps_list->o_sync_slog_omitcsn,
 461                                                 &text );
 462                                 } else {
 463                                         match = -1;
 464                                 }
 465                                 if ( match >= 0 ) {
 466                                         sync_send_present_mode = 0;
 467                                 }
 468                         } else {
 469                                 sync_send_present_mode = 0;
 470                         }
 471                 } else if ( sop->o_sync_slog_size >= 0 ) {
 472                         LDAP_LIST_INSERT_HEAD( &bdb->bi_psearch_list, sop, o_ps_link );
 473                 } else {
 474                         sop->o_sync_state.sid = -1;
 475                 }
 476                 ldap_pvt_thread_rdwr_wunlock( &bdb->bi_pslist_rwlock );
 477         }
 478
 479         null_attr.an_desc = NULL;
 480         null_attr.an_oc = NULL;
 481         null_attr.an_oc_exclude = 0;
 482         null_attr.an_name.bv_len = 0;
 483         null_attr.an_name.bv_val = NULL;
 484
 485         for( num_ctrls = 0; num_ctrls < SLAP_MAX_RESPONSE_CONTROLS; num_ctrls++ ) {
 486                 ctrls[num_ctrls] = NULL;
 487         }
 488         num_ctrls = 0;
 489
 490         if ( IS_PSEARCH && IS_BDB_REPLACE(ps_type)) {
 491                 attrs = uuid_attr;
 492                 attrs[0].an_desc = NULL;
 493                 attrs[0].an_oc = NULL;
 494                 attrs[0].an_oc_exclude = 0;
 495                 attrs[0].an_name.bv_len = 0;
 496                 attrs[0].an_name.bv_val = NULL;
 497         }
 498
 499         manageDSAit = get_manageDSAit( sop );
 500
 501         /* Sync control overrides manageDSAit */
 502         if ( !IS_PSEARCH && sop->o_sync_mode & SLAP_SYNC_REFRESH ) {
 503                 if ( manageDSAit == SLAP_NO_CONTROL ) {
 504                         manageDSAit = SLAP_CRITICAL_CONTROL;
 505                 }
 506         } else if ( IS_PSEARCH ) {
 507                 if ( manageDSAit == SLAP_NO_CONTROL ) {
 508                         manageDSAit = SLAP_CRITICAL_CONTROL;
 509                 }
 510         }
 511
 512         rs->sr_err = LOCK_ID( bdb->bi_dbenv, &locker );
 513
 514         switch(rs->sr_err) {
 515         case 0:
 516                 break;
 517         default:
 518                 send_ldap_error( sop, rs, LDAP_OTHER, "internal error" );
 519                 return rs->sr_err;
 520         }
 521
 522         if ( sop->o_req_ndn.bv_len == 0 ) {
 523                 /* DIT root special case */
 524                 ei_root.bei_e = &e_root;
 525                 ei_root.bei_parent = &ei_root;
 526                 e_root.e_private = &ei_root;
 527                 e_root.e_id = 0;
 528                 e_root.e_nname.bv_val="";
 529                 e_root.e_name.bv_val="";
 530                 ei = &ei_root;
 531                 rs->sr_err = LDAP_SUCCESS;
 532         } else {
 533 dn2entry_retry:
 534                 /* get entry with reader lock */
 535                 rs->sr_err = bdb_dn2entry( op, NULL, &sop->o_req_ndn, &ei,
 536                         1, locker, &lock );
 537         }
 538
 539         switch(rs->sr_err) {
 540         case DB_NOTFOUND:
 541                 matched = ei->bei_e;
 542                 break;
 543         case 0:
 544                 e = ei->bei_e;
 545                 break;
 546         case LDAP_BUSY:
 547                 send_ldap_error( sop, rs, LDAP_BUSY, "ldap server busy" );
 548                 LOCK_ID_FREE (bdb->bi_dbenv, locker );
 549                 return LDAP_BUSY;
 550         case DB_LOCK_DEADLOCK:
 551         case DB_LOCK_NOTGRANTED:
 552                 goto dn2entry_retry;
 553         default:
 554                 send_ldap_error( sop, rs, LDAP_OTHER, "internal error" );
 555                 LOCK_ID_FREE (bdb->bi_dbenv, locker );
 556                 return rs->sr_err;
 557         }
 558
 559         if ( e && (op->ors_deref & LDAP_DEREF_FINDING) && is_entry_alias(e) ) {
 560                 BDB_IDL_ZERO(candidates);
 561                 e = deref_base( op, rs, e, &matched, locker, &lock,
 562                         candidates, NULL );
 563         }
 564
 565         if ( e == NULL ) {
 566                 struct berval matched_dn = BER_BVNULL;
 567
 568                 if ( matched != NULL ) {
 569                         BerVarray erefs;
 570                         ber_dupbv( &matched_dn, &matched->e_name );
 571
 572                         erefs = is_entry_referral( matched )
 573                                 ? get_entry_referrals( op, matched )
 574                                 : NULL;
 575
 576                         bdb_cache_return_entry_r (bdb->bi_dbenv, &bdb->bi_cache,
 577                                 matched, &lock);
 578                         matched = NULL;
 579
 580                         if( erefs ) {
 581                                 rs->sr_ref = referral_rewrite( erefs, &matched_dn,
 582                                         &sop->o_req_dn, sop->oq_search.rs_scope );
 583                                 ber_bvarray_free( erefs );
 584                         }
 585
 586                 } else {
 587                         rs->sr_ref = referral_rewrite( default_referral,
 588                                 NULL, &sop->o_req_dn, sop->oq_search.rs_scope );
 589                 }
 590
 591                 rs->sr_err = LDAP_REFERRAL;
 592                 rs->sr_matched = matched_dn.bv_val;
 593                 send_ldap_result( sop, rs );
 594
 595                 LOCK_ID_FREE (bdb->bi_dbenv, locker );
 596                 if ( rs->sr_ref ) {
 597                         ber_bvarray_free( rs->sr_ref );
 598                         rs->sr_ref = NULL;
 599                 }
 600                 if ( matched_dn.bv_val ) {
 601                         ber_memfree( matched_dn.bv_val );
 602                         rs->sr_matched = NULL;
 603                 }
 604                 return rs->sr_err;
 605         }
 606
 607         if ( !manageDSAit && e != &e_root && is_entry_referral( e ) ) {
 608                 /* entry is a referral, don't allow add */
 609                 struct berval matched_dn;
 610                 BerVarray erefs;
 611
 612                 ber_dupbv( &matched_dn, &e->e_name );
 613                 erefs = get_entry_referrals( op, e );
 614
 615                 bdb_cache_return_entry_r( bdb->bi_dbenv, &bdb->bi_cache, e, &lock );
 616                 e = NULL;
 617
 618                 if( erefs ) {
 619                         rs->sr_ref = referral_rewrite( erefs, &matched_dn,
 620                                 &sop->o_req_dn, sop->oq_search.rs_scope );
 621                         ber_bvarray_free( erefs );
 622                 }
 623
 624 #ifdef NEW_LOGGING
 625                 LDAP_LOG ( OPERATION, RESULTS,
 626                         "bdb_search: entry is referral\n", 0, 0, 0 );
 627 #else
 628                 Debug( LDAP_DEBUG_TRACE, "bdb_search: entry is referral\n",
 629                         0, 0, 0 );
 630 #endif
 631
 632                 if (!rs->sr_ref) rs->sr_text = "bad_referral object";
 633                 rs->sr_err = LDAP_REFERRAL;
 634                 rs->sr_matched = matched_dn.bv_val;
 635                 send_ldap_result( sop, rs );
 636
 637                 LOCK_ID_FREE (bdb->bi_dbenv, locker );
 638                 ber_bvarray_free( rs->sr_ref );
 639                 rs->sr_ref = NULL;
 640                 ber_memfree( matched_dn.bv_val );
 641                 rs->sr_matched = NULL;
 642                 return 1;
 643         }
 644
 645         if ( get_assert( op ) &&
 646                 ( test_filter( op, e, get_assertion( op )) != LDAP_COMPARE_TRUE ))
 647         {
 648                 rs->sr_err = LDAP_ASSERTION_FAILED;
 649                 send_ldap_result( sop, rs );
 650                 return 1;
 651         }
 652
 653         /* compute it anyway; root does not use it */
 654         stoptime = op->o_time + sop->ors_tlimit;
 655
 656         /* need normalized dn below */
 657         ber_dupbv( &realbase, &e->e_nname );
 658
 659         /* Copy info to base, must free entry before accessing the database
 660          * in search_candidates, to avoid deadlocks.
 661          */
 662         base.e_private = e->e_private;
 663         base.e_nname = realbase;
 664         base.e_id = e->e_id;
 665
 666         if ( e != &e_root ) {
 667                 bdb_cache_return_entry_r(bdb->bi_dbenv, &bdb->bi_cache, e, &lock);
 668         }
 669         e = NULL;
 670
 671         if ( !IS_PSEARCH ) {
 672                 rs->sr_err = bdb_get_commit_csn( sop, rs, &search_context_csn,
 673                         locker, &ctxcsn_lock );
 674
 675                 if ( rs->sr_err != LDAP_SUCCESS ) {
 676                         send_ldap_error( sop, rs, rs->sr_err,
 677                                 "error in csn management in search" );
 678                         goto done;
 679                 }
 680
 681                 if ( sop->o_sync_mode != SLAP_SYNC_NONE &&
 682                         sop->o_sync_state.ctxcsn &&
 683                         sop->o_sync_state.ctxcsn->bv_val &&
 684                         ber_bvcmp( &sop->o_sync_state.ctxcsn[0], search_context_csn ) == 0 )
 685                 {
 686                         bdb_cache_entry_db_unlock( bdb->bi_dbenv, &ctxcsn_lock );
 687                         goto nochange;
 688                 }
 689         } else {
 690                 search_context_csn = ber_dupbv( NULL, &op->o_sync_csn );
 691         }
 692
 693         /* select candidates */
 694         if ( sop->oq_search.rs_scope == LDAP_SCOPE_BASE ) {
 695                 rs->sr_err = base_candidate( op->o_bd, &base, candidates );
 696
 697         } else {
 698                 BDB_IDL_ZERO( candidates );
 699                 BDB_IDL_ZERO( scopes );
 700                 rs->sr_err = search_candidates( op, sop, rs, &base,
 701                         locker, candidates, scopes );
 702         }
 703
 704         if ( !IS_PSEARCH && sop->o_sync_mode != SLAP_SYNC_NONE ) {
 705                 bdb_cache_entry_db_unlock( bdb->bi_dbenv, &ctxcsn_lock );
 706         }
 707
 708         /* start cursor at beginning of candidates.
 709          */
 710         cursor = 0;
 711         if (IS_PSEARCH) {
 712                 if ( !BDB_IDL_IS_RANGE( candidates ) ) {
 713                         cursor = bdb_idl_search( candidates, ps_e->e_id );
 714                         if ( candidates[cursor] != ps_e->e_id ) {
 715                                 rs->sr_err = LDAP_SUCCESS;
 716                                 goto done;
 717                         }
 718                 } else if ( ps_e->e_id < BDB_IDL_RANGE_FIRST( candidates ) ||
 719                         ps_e->e_id > BDB_IDL_RANGE_LAST( candidates ))
 720                 {
 721                         rs->sr_err = LDAP_SUCCESS;
 722                         goto done;
 723                 }
 724                 candidates[0] = 1;
 725                 candidates[1] = ps_e->e_id;
 726         }
 727
 728         if ( candidates[0] == 0 ) {
 729 #ifdef NEW_LOGGING
 730                 LDAP_LOG ( OPERATION, RESULTS,
 731                         "bdb_search: no candidates\n", 0, 0, 0 );
 732 #else
 733                 Debug( LDAP_DEBUG_TRACE, "bdb_search: no candidates\n",
 734                         0, 0, 0 );
 735 #endif
 736
 737                 goto nochange;
 738         }
 739
 740         /* if not root and candidates exceed to-be-checked entries, abort */
 741         if ( sop->ors_limit     /* isroot == TRUE */ &&
 742                 sop->ors_limit->lms_s_unchecked != -1 &&
 743                 BDB_IDL_N(candidates) > (unsigned) sop->ors_limit->lms_s_unchecked )
 744         {
 745                 rs->sr_err = LDAP_ADMINLIMIT_EXCEEDED;
 746                 send_ldap_result( sop, rs );
 747                 rs->sr_err = LDAP_SUCCESS;
 748                 goto done;
 749         }
 750
 751         if ( sop->ors_limit == NULL     /* isroot == FALSE */ ||
 752                 !sop->ors_limit->lms_s_pr_hide )
 753         {
 754                 tentries = BDB_IDL_N(candidates);
 755         }
 756
 757         if ( get_pagedresults(sop) ) {
 758                 if ( (ID)( sop->o_pagedresults_state.ps_cookie ) == 0 ) {
 759                         id = bdb_idl_first( candidates, &cursor );
 760
 761                 } else {
 762                         if ( sop->o_pagedresults_size == 0 ) {
 763                                 rs->sr_err = LDAP_SUCCESS;
 764                                 rs->sr_text = "search abandoned by pagedResult size=0";
 765                                 send_ldap_result( sop, rs );
 766                                 goto done;
 767                         }
 768                         for ( id = bdb_idl_first( candidates, &cursor );
 769                                 id != NOID &&
 770                                         id <= (ID)( sop->o_pagedresults_state.ps_cookie );
 771                                 id = bdb_idl_next( candidates, &cursor ) )
 772                         {
 773                                 /* empty */;
 774                         }
 775                 }
 776
 777                 if ( cursor == NOID ) {
 778 #ifdef NEW_LOGGING
 779                         LDAP_LOG ( OPERATION, RESULTS,
 780                                 "bdb_search: no paged results candidates\n",
 781                                 0, 0, 0 );
 782 #else
 783                         Debug( LDAP_DEBUG_TRACE,
 784                                 "bdb_search: no paged results candidates\n",
 785                                 0, 0, 0 );
 786 #endif
 787                         send_paged_response( sop, rs, lastid, 0 );
 788
 789                         rs->sr_err = LDAP_OTHER;
 790                         goto done;
 791                 }
 792                 goto loop_begin;
 793         }
 794
 795         if (( sop->o_sync_mode & SLAP_SYNC_REFRESH ) || IS_PSEARCH ) {
 796                 int match;
 797
 798                 cookief.f_choice = LDAP_FILTER_AND;
 799                 cookief.f_and = &csnfnot;
 800                 cookief.f_next = NULL;
 801
 802                 csnfnot.f_choice = LDAP_FILTER_NOT;
 803                 csnfnot.f_not = &csnfeq;
 804                 csnfnot.f_next = &csnfand;
 805
 806                 csnfeq.f_choice = LDAP_FILTER_EQUALITY;
 807                 csnfeq.f_ava = &aa_eq;
 808                 csnfeq.f_av_desc = slap_schema.si_ad_entryCSN;
 809                 if ( sop->o_sync_state.ctxcsn != NULL ) {
 810                         csnfeq.f_av_value = *sop->o_sync_state.ctxcsn;
 811                 } else {
 812                         csnfeq.f_av_value = slap_empty_bv;
 813                 }
 814
 815                 csnfand.f_choice = LDAP_FILTER_AND;
 816                 csnfand.f_and = &csnfge;
 817                 csnfand.f_next = NULL;
 818
 819                 csnfge.f_choice = LDAP_FILTER_GE;
 820                 csnfge.f_ava = &aa_ge;
 821                 csnfge.f_av_desc = slap_schema.si_ad_entryCSN;
 822                 if ( sop->o_sync_state.ctxcsn != NULL ) {
 823                         csnfge.f_av_value = *sop->o_sync_state.ctxcsn;
 824                 } else {
 825                         csnfge.f_av_value = slap_empty_bv;
 826                 }
 827
 828                 if ( search_context_csn && !IS_PSEARCH ) {
 829                         csnfge.f_next = &contextcsnand;
 830
 831                         contextcsnand.f_choice = LDAP_FILTER_AND;
 832                         contextcsnand.f_and = &contextcsnle;
 833                         contextcsnand.f_next = NULL;
 834
 835                         contextcsnle.f_choice = LDAP_FILTER_LE;
 836                         contextcsnle.f_ava = &aa_le;
 837                         contextcsnle.f_av_desc = slap_schema.si_ad_entryCSN;
 838                         contextcsnle.f_av_value = *search_context_csn;
 839                         contextcsnle.f_next = sop->oq_search.rs_filter;
 840
 841                         mr = slap_schema.si_ad_entryCSN->ad_type->sat_ordering;
 842                         if ( sop->o_sync_state.ctxcsn &&
 843                                 sop->o_sync_state.ctxcsn->bv_val != NULL )
 844                         {
 845                                 value_match( &match, slap_schema.si_ad_entryCSN, mr,
 846                                                 SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
 847                                                 &sop->o_sync_state.ctxcsn[0], search_context_csn,
 848                                                 &text );
 849                         } else {
 850                                 match = -1;
 851                         }
 852                         no_sync_state_change = ( match >= 0 );
 853                 } else {
 854                         csnfge.f_next = sop->oq_search.rs_filter;
 855                 }
 856         }
 857
 858         for ( id = bdb_idl_first( candidates, &cursor );
 859                 id != NOID && !no_sync_state_change;
 860                 id = bdb_idl_next( candidates, &cursor ) )
 861         {
 862                 int scopeok = 0;
 863
 864 loop_begin:
 865                 /* check for abandon */
 866                 if ( sop->o_abandon ) {
 867                         if ( sop != op ) {
 868                                 bdb_drop_psearch( sop, sop->o_msgid );
 869                         }
 870                         rs->sr_err = LDAP_SUCCESS;
 871                         goto done;
 872                 }
 873
 874                 if ( sop->o_cancel ) {
 875                         assert( sop->o_cancel == SLAP_CANCEL_REQ );
 876                         rs->sr_err = LDAP_CANCELLED;
 877                         send_ldap_result( sop, rs );
 878                         sop->o_cancel = SLAP_CANCEL_ACK;
 879                         rs->sr_err = LDAP_SUCCESS;
 880                         goto done;
 881                 }
 882
 883                 /* check time limit */
 884                 if ( sop->ors_tlimit != SLAP_NO_LIMIT
 885                                 && slap_get_time() > stoptime )
 886                 {
 887                         rs->sr_err = LDAP_TIMELIMIT_EXCEEDED;
 888                         rs->sr_ref = rs->sr_v2ref;
 889                         send_ldap_result( sop, rs );
 890                         rs->sr_err = LDAP_SUCCESS;
 891                         goto done;
 892                 }
 893
 894                 if (!IS_PSEARCH) {
 895 id2entry_retry:
 896                         /* get the entry with reader lock */
 897                         ei = NULL;
 898                         rs->sr_err = bdb_cache_find_id( op, NULL,
 899                                 id, &ei, 0, locker, &lock );
 900
 901                         if (rs->sr_err == LDAP_BUSY) {
 902                                 rs->sr_text = "ldap server busy";
 903                                 send_ldap_result( sop, rs );
 904                                 goto done;
 905
 906                         } else if ( rs->sr_err == DB_LOCK_DEADLOCK
 907                                 || rs->sr_err == DB_LOCK_NOTGRANTED )
 908                         {
 909                                 goto id2entry_retry;
 910                         }
 911
 912                         if ( ei && rs->sr_err == LDAP_SUCCESS ) {
 913                                 e = ei->bei_e;
 914                         } else {
 915                                 e = NULL;
 916                         }
 917
 918                         if ( e == NULL ) {
 919                                 if( !BDB_IDL_IS_RANGE(candidates) ) {
 920                                         /* only complain for non-range IDLs */
 921 #ifdef NEW_LOGGING
 922                                         LDAP_LOG ( OPERATION, RESULTS,
 923                                                 "bdb_search: candidate %ld not found\n",
 924                                                 (long) id, 0, 0);
 925 #else
 926                                         Debug( LDAP_DEBUG_TRACE,
 927                                                 "bdb_search: candidate %ld not found\n",
 928                                                 (long) id, 0, 0 );
 929 #endif
 930                                 }
 931
 932                                 goto loop_continue;
 933                         }
 934                 } else {
 935                         e = ps_e;
 936                 }
 937
 938                 rs->sr_entry = e;
 939
 940 #ifdef BDB_SUBENTRIES
 941                 /* FIXME: send all but syncrepl */
 942 #if 0
 943                 if ( !is_sync_protocol( sop ) )
 944 #endif
 945                 {
 946                         if ( is_entry_subentry( e ) ) {
 947                                 if( sop->oq_search.rs_scope != LDAP_SCOPE_BASE ) {
 948                                         if(!get_subentries_visibility( sop )) {
 949                                                 /* only subentries are visible */
 950                                                 goto loop_continue;
 951                                         }
 952
 953                                 } else if ( get_subentries( sop ) &&
 954                                         !get_subentries_visibility( sop ))
 955                                 {
 956                                         /* only subentries are visible */
 957                                         goto loop_continue;
 958                                 }
 959
 960                         } else if ( get_subentries_visibility( sop )) {
 961                                 /* only subentries are visible */
 962                                 goto loop_continue;
 963                         }
 964                 }
 965 #endif /* BDB_SUBENTRIES */
 966
 967                 /* Does this candidate actually satisfy the search scope?
 968                  *
 969                  * Note that we don't lock access to the bei_parent pointer.
 970                  * Since only leaf nodes can be deleted, the parent of any
 971                  * node will always be a valid node. Also since we have
 972                  * a Read lock on the data, it cannot be renamed out of the
 973                  * scope while we are looking at it, and unless we're using
 974                  * BDB_HIER, its parents cannot be moved either.
 975                  */
 976                 switch( sop->ors_scope ) {
 977                 case LDAP_SCOPE_BASE:
 978                         /* This is always true, yes? */
 979                         if ( id == base.e_id ) scopeok = 1;
 980                         break;
 981
 982                 case LDAP_SCOPE_ONELEVEL:
 983                         if ( ei->bei_parent->bei_id == base.e_id ) scopeok = 1;
 984                         break;
 985
 986 #ifdef LDAP_SCOPE_CHILDREN
 987                 case LDAP_SCOPE_CHILDREN:
 988                         if ( id == base.e_id ) break;
 989                         /* Fall-thru */
 990 #endif
 991                 case LDAP_SCOPE_SUBTREE: {
 992                         EntryInfo *tmp;
 993                         for (tmp = BEI(e); tmp;
 994                                  tmp = tmp->bei_parent ) {
 995                                 if ( tmp->bei_id == base.e_id ) {
 996                                         scopeok = 1;
 997                                         break;
 998                                 }
 999                         }
1000                         } break;
1001                 }
1002
1003 #ifdef BDB_ALIASES
1004                 /* aliases were already dereferenced in candidate list */
1005                 if ( sop->ors_deref & LDAP_DEREF_SEARCHING ) {
1006                         /* but if the search base is an alias, and we didn't
1007                          * deref it when finding, return it.
1008                          */
1009                         if ( is_entry_alias(e) &&
1010                                 ((sop->ors_deref & LDAP_DEREF_FINDING) ||
1011                                         !bvmatch(&e->e_nname, &op->o_req_ndn)))
1012                         {
1013                                 goto loop_continue;
1014                         }
1015
1016                         /* scopes is only non-empty for onelevel or subtree */
1017                         if ( !scopeok && BDB_IDL_N(scopes) ) {
1018                                 unsigned x;
1019                                 if ( sop->ors_scope == LDAP_SCOPE_ONELEVEL ) {
1020                                         x = bdb_idl_search( scopes, e->e_id );
1021                                         if ( scopes[x] == e->e_id ) scopeok = 1;
1022                                 } else {
1023                                         /* subtree, walk up the tree */
1024                                         EntryInfo *tmp = BEI(e);
1025                                         for (;tmp->bei_parent; tmp=tmp->bei_parent) {
1026                                                 x = bdb_idl_search( scopes, tmp->bei_id );
1027                                                 if ( scopes[x] == tmp->bei_id ) {
1028                                                         scopeok = 1;
1029                                                         break;
1030                                                 }
1031                                         }
1032                                 }
1033                         }
1034                 }
1035 #endif
1036
1037                 /* Not in scope, ignore it */
1038                 if ( !scopeok ) {
1039 #ifdef NEW_LOGGING
1040                         LDAP_LOG ( OPERATION, RESULTS,
1041                                 "bdb_search: %ld scope not okay\n",
1042                                 (long) id, 0, 0);
1043 #else
1044                         Debug( LDAP_DEBUG_TRACE,
1045                                 "bdb_search: %ld scope not okay\n",
1046                                 (long) id, 0, 0 );
1047 #endif
1048                         goto loop_continue;
1049                 }
1050
1051                 /*
1052                  * if it's a referral, add it to the list of referrals. only do
1053                  * this for non-base searches, and don't check the filter
1054                  * explicitly here since it's only a candidate anyway.
1055                  */
1056                 if ( !manageDSAit && sop->oq_search.rs_scope != LDAP_SCOPE_BASE
1057                         && is_entry_referral( e ) )
1058                 {
1059                         BerVarray erefs = get_entry_referrals( sop, e );
1060                         rs->sr_ref = referral_rewrite( erefs, &e->e_name, NULL,
1061                                 sop->oq_search.rs_scope == LDAP_SCOPE_ONELEVEL
1062                                         ? LDAP_SCOPE_BASE : LDAP_SCOPE_SUBTREE );
1063
1064                         send_search_reference( sop, rs );
1065
1066                         ber_bvarray_free( rs->sr_ref );
1067                         ber_bvarray_free( erefs );
1068                         rs->sr_ref = NULL;
1069
1070                         goto loop_continue;
1071                 }
1072
1073                 if ( !manageDSAit && is_entry_glue( e )) {
1074                         goto loop_continue;
1075                 }
1076
1077                 /* if it matches the filter and scope, send it */
1078                 if (IS_PSEARCH) {
1079                         if (ps_type != LDAP_PSEARCH_BY_SCOPEOUT) {
1080                                 rs->sr_err = test_filter( sop, rs->sr_entry, &cookief );
1081                         } else {
1082                                 rs->sr_err = LDAP_COMPARE_TRUE;
1083                         }
1084
1085                 } else {
1086                         if ( sop->o_sync_mode & SLAP_SYNC_REFRESH ) {
1087                                 rc_sync = test_filter( sop, rs->sr_entry, &cookief );
1088                                 rs->sr_err = test_filter( sop, rs->sr_entry, &contextcsnand );
1089                                 if ( rs->sr_err == LDAP_COMPARE_TRUE ) {
1090                                         if ( rc_sync == LDAP_COMPARE_TRUE ) {
1091                                                 if ( no_sync_state_change ) {
1092 #ifdef NEW_LOGGING
1093                                                         LDAP_LOG ( OPERATION, RESULTS,
1094                                                                 "bdb_search: error in context csn management\n",
1095                                                                 0, 0, 0 );
1096 #else
1097                                                         Debug( LDAP_DEBUG_TRACE,
1098                                                                 "bdb_search: error in context csn management\n",
1099                                                                 0, 0, 0 );
1100 #endif
1101                                                 }
1102                                                 entry_sync_state = LDAP_SYNC_ADD;
1103
1104                                         } else {
1105                                                 if ( no_sync_state_change ) {
1106                                                         goto loop_continue;
1107                                                 }
1108                                                 entry_sync_state = LDAP_SYNC_PRESENT;
1109                                         }
1110                                 }
1111
1112                         } else {
1113                                 rs->sr_err = test_filter( sop,
1114                                         rs->sr_entry, sop->oq_search.rs_filter );
1115                         }
1116                 }
1117
1118                 if ( rs->sr_err == LDAP_COMPARE_TRUE ) {
1119                         /* check size limit */
1120                         if ( --sop->ors_slimit == -1 &&
1121                                 sop->o_sync_slog_size == -1 )
1122                         {
1123                                 if (!IS_PSEARCH) {
1124                                         bdb_cache_return_entry_r( bdb->bi_dbenv,
1125                                                 &bdb->bi_cache, e, &lock );
1126                                 }
1127                                 e = NULL;
1128                                 rs->sr_entry = NULL;
1129                                 rs->sr_err = LDAP_SIZELIMIT_EXCEEDED;
1130                                 rs->sr_ref = rs->sr_v2ref;
1131                                 send_ldap_result( sop, rs );
1132                                 rs->sr_err = LDAP_SUCCESS;
1133                                 goto done;
1134                         }
1135
1136                         if ( get_pagedresults(sop) ) {
1137                                 if ( rs->sr_nentries >= sop->o_pagedresults_size ) {
1138                                         send_paged_response( sop, rs, lastid, tentries );
1139                                         goto done;
1140                                 }
1141                                 lastid = id;
1142                         }
1143
1144                         if (e) {
1145                                 /* safe default */
1146                                 int result = -1;
1147
1148                                 if (IS_PSEARCH) {
1149                                         int premodify_found = 0;
1150                                         int entry_sync_state;
1151
1152                                         if ( ps_type == LDAP_PSEARCH_BY_ADD ||
1153                                                  ps_type == LDAP_PSEARCH_BY_DELETE ||
1154                                                  ps_type == LDAP_PSEARCH_BY_MODIFY ||
1155                                                  ps_type == LDAP_PSEARCH_BY_SCOPEOUT )
1156                                         {
1157                                                 if ( ps_type == LDAP_PSEARCH_BY_MODIFY ) {
1158                                                         struct psid_entry* psid_e;
1159                                                         LDAP_LIST_FOREACH( psid_e,
1160                                                                 &op->o_pm_list, ps_link)
1161                                                         {
1162                                                                 if( psid_e->ps_op == sop ) {
1163                                                                         premodify_found = 1;
1164                                                                         LDAP_LIST_REMOVE(psid_e, ps_link);
1165                                                                         break;
1166                                                                 }
1167                                                         }
1168                                                         if (psid_e != NULL) free (psid_e);
1169                                                 }
1170
1171                                                 if ( ps_type == LDAP_PSEARCH_BY_ADD ) {
1172                                                         entry_sync_state = LDAP_SYNC_ADD;
1173                                                 } else if ( ps_type == LDAP_PSEARCH_BY_DELETE ) {
1174                                                         entry_sync_state = LDAP_SYNC_DELETE;
1175                                                 } else if ( ps_type == LDAP_PSEARCH_BY_MODIFY ) {
1176                                                         if ( premodify_found ) {
1177                                                                 entry_sync_state = LDAP_SYNC_MODIFY;
1178                                                         } else {
1179                                                                 entry_sync_state = LDAP_SYNC_ADD;
1180                                                         }
1181                                                 } else if ( ps_type == LDAP_PSEARCH_BY_SCOPEOUT ) {
1182                                                         entry_sync_state = LDAP_SYNC_DELETE;
1183                                                 } else {
1184                                                         rs->sr_err = LDAP_OTHER;
1185                                                         goto done;
1186                                                 }
1187
1188                                                 if ( sop->o_sync_slog_size != -1 ) {
1189                                                         if ( entry_sync_state == LDAP_SYNC_DELETE ) {
1190                                                                 result = slap_add_session_log( op, sop, e );
1191                                                         } else {
1192                                                                 result = 1;
1193                                                         }
1194                                                 } else {
1195                                                         struct berval cookie;
1196                                                         slap_compose_sync_cookie( sop, &cookie,
1197                                                                 search_context_csn,
1198                                                                 sop->o_sync_state.sid,
1199                                                                 sop->o_sync_state.rid );
1200                                                         rs->sr_err = slap_build_sync_state_ctrl( sop,
1201                                                                 rs, e, entry_sync_state, ctrls,
1202                                                                 num_ctrls++, 1, &cookie );
1203                                                         if ( rs->sr_err != LDAP_SUCCESS ) goto done;
1204                                                         rs->sr_attrs = attrs;
1205                                                         rs->sr_ctrls = ctrls;
1206                                                         rs->sr_flags = 0;
1207                                                         result = send_search_entry( sop, rs );
1208                                                         if ( cookie.bv_val ) ch_free( cookie.bv_val );
1209                                                         slap_sl_free(
1210                                                                 ctrls[num_ctrls-1]->ldctl_value.bv_val,
1211                                                                 sop->o_tmpmemctx );
1212                                                         slap_sl_free( ctrls[--num_ctrls],
1213                                                                 sop->o_tmpmemctx );
1214                                                         ctrls[num_ctrls] = NULL;
1215                                                         rs->sr_ctrls = NULL;
1216                                                 }
1217
1218                                         } else if ( ps_type == LDAP_PSEARCH_BY_PREMODIFY ) {
1219                                                 struct psid_entry* psid_e;
1220                                                 psid_e = (struct psid_entry *) ch_calloc(1,
1221                                                         sizeof(struct psid_entry));
1222                                                 psid_e->ps_op = sop;
1223                                                 LDAP_LIST_INSERT_HEAD( &op->o_pm_list,
1224                                                         psid_e, ps_link );
1225
1226                                         } else {
1227 #ifdef NEW_LOGGING
1228                                                 LDAP_LOG ( OPERATION, RESULTS,
1229                                                         "bdb_search: invalid ps_type (%d) \n",
1230                                                         ps_type, 0, 0);
1231 #else
1232                                                 Debug( LDAP_DEBUG_TRACE,
1233                                                         "bdb_search: invalid ps_type (%d) \n",
1234                                                         ps_type, 0, 0);
1235 #endif
1236                                         }
1237
1238                                 } else {
1239                                         if ( sop->o_sync_mode & SLAP_SYNC_REFRESH ) {
1240                                                 if ( rc_sync == LDAP_COMPARE_TRUE ) { /* ADD */
1241                                                         rs->sr_err = slap_build_sync_state_ctrl( sop,
1242                                                                 rs, e, entry_sync_state, ctrls,
1243                                                                 num_ctrls++, 0, NULL );
1244                                                         if ( rs->sr_err != LDAP_SUCCESS ) goto done;
1245                                                         rs->sr_ctrls = ctrls;
1246                                                         rs->sr_attrs = sop->oq_search.rs_attrs;
1247                                                         rs->sr_flags = 0;
1248                                                         result = send_search_entry( sop, rs );
1249                                                         slap_sl_free(
1250                                                                 ctrls[num_ctrls-1]->ldctl_value.bv_val,
1251                                                                 sop->o_tmpmemctx );
1252                                                         slap_sl_free( ctrls[--num_ctrls],
1253                                                                 sop->o_tmpmemctx );
1254                                                         ctrls[num_ctrls] = NULL;
1255                                                         rs->sr_ctrls = NULL;
1256
1257                                                 } else { /* PRESENT */
1258                                                         if ( sync_send_present_mode ) {
1259                                                                 result = slap_build_syncUUID_set( sop,
1260                                                                         &syncUUID_set, e );
1261                                                                 if ( result <= 0 ) {
1262                                                                         result = -1;
1263                                                                 } else {
1264                                                                         syncUUID_set_cnt++;
1265                                                                         if ( syncUUID_set_cnt ==
1266                                                                                 SLAP_SYNCUUID_SET_SIZE )
1267                                                                         {
1268                                                                                 rs->sr_err = LDAP_SUCCESS;
1269                                                                                 rs->sr_rspoid = LDAP_SYNC_INFO;
1270                                                                                 rs->sr_ctrls = NULL;
1271                                                                                 result = slap_send_syncinfo( sop, rs,
1272                                                                                         LDAP_TAG_SYNC_ID_SET,
1273                                                                                         NULL, 0, syncUUID_set, 0 );
1274                                                                                 if ( result != LDAP_SUCCESS ) {
1275                                                                                         result = -1;
1276                                                                                 }
1277                                                                                 ber_bvarray_free_x( syncUUID_set,
1278                                                                                         sop->o_tmpmemctx );
1279                                                                                 syncUUID_set = NULL;
1280                                                                                 syncUUID_set_cnt = 0;
1281                                                                         }
1282                                                                 }
1283
1284                                                         } else {
1285                                                                 result = 1;
1286                                                         }
1287                                                 }
1288
1289                                         } else {
1290                                                 rs->sr_attrs = sop->oq_search.rs_attrs;
1291                                                 rs->sr_ctrls = NULL;
1292                                                 rs->sr_flags = 0;
1293                                                 rs->sr_err = LDAP_SUCCESS;
1294                                                 result = send_search_entry( sop, rs );
1295                                         }
1296                                 }
1297
1298                                 switch (result) {
1299                                 case 0:         /* entry sent ok */
1300                                         break;
1301                                 case 1:         /* entry not sent */
1302                                         break;
1303                                 case -1:        /* connection closed */
1304                                         if (!IS_PSEARCH) {
1305                                                 bdb_cache_return_entry_r(bdb->bi_dbenv,
1306                                                         &bdb->bi_cache, e, &lock);
1307                                         }
1308                                         e = NULL;
1309                                         rs->sr_entry = NULL;
1310                                         rs->sr_err = LDAP_OTHER;
1311                                         goto done;
1312                                 }
1313                         }
1314
1315                 } else {
1316 #ifdef NEW_LOGGING
1317                         LDAP_LOG ( OPERATION, RESULTS,
1318                                 "bdb_search: %ld does not match filter\n", (long) id, 0, 0);
1319 #else
1320                         Debug( LDAP_DEBUG_TRACE,
1321                                 "bdb_search: %ld does not match filter\n",
1322                                 (long) id, 0, 0 );
1323 #endif
1324                 }
1325
1326 loop_continue:
1327                 if( e != NULL ) {
1328                         /* free reader lock */
1329                         if (!IS_PSEARCH) {
1330                                 bdb_cache_return_entry_r( bdb->bi_dbenv,
1331                                         &bdb->bi_cache, e , &lock );
1332                                 if ( sop->o_nocaching ) {
1333                                         bdb_cache_delete_entry( bdb, ei, locker, &lock );
1334                                 }
1335                         }
1336                         e = NULL;
1337                         rs->sr_entry = NULL;
1338                 }
1339
1340                 ldap_pvt_thread_yield();
1341         }
1342
1343         if ( syncUUID_set_cnt > 0 ) {
1344                 rs->sr_err = LDAP_SUCCESS;
1345                 rs->sr_rspoid = LDAP_SYNC_INFO;
1346                 rs->sr_ctrls = NULL;
1347                 slap_send_syncinfo( sop, rs, LDAP_TAG_SYNC_ID_SET,
1348                         NULL, 0, syncUUID_set, 0 );
1349                 ber_bvarray_free_x( syncUUID_set, sop->o_tmpmemctx );
1350                 syncUUID_set_cnt = 0;
1351         }
1352
1353 nochange:
1354         if (!IS_PSEARCH) {
1355                 if ( sop->o_sync_mode & SLAP_SYNC_REFRESH ) {
1356                         if ( sop->o_sync_mode & SLAP_SYNC_PERSIST ) {
1357                                 struct berval cookie;
1358                                 slap_compose_sync_cookie( sop, &cookie, search_context_csn,
1359                                         sop->o_sync_state.sid, sop->o_sync_state.rid );
1360
1361                                 if ( sync_send_present_mode ) {
1362                                         rs->sr_err = LDAP_SUCCESS;
1363                                         rs->sr_rspoid = LDAP_SYNC_INFO;
1364                                         rs->sr_ctrls = NULL;
1365                                         slap_send_syncinfo( sop, rs,
1366                                                 LDAP_TAG_SYNC_REFRESH_PRESENT, &cookie, 1, NULL, 0 );
1367
1368                                 } else {
1369                                         if ( !no_sync_state_change ) {
1370                                                 int slog_found = 0;
1371                                                 ldap_pvt_thread_rdwr_rlock( &bdb->bi_pslist_rwlock );
1372                                                 LDAP_LIST_FOREACH( ps_list, &bdb->bi_psearch_list,
1373                                                         o_ps_link )
1374                                                 {
1375                                                         if ( ps_list->o_sync_slog_size > 0 ) {
1376                                                                 if ( ps_list->o_sync_state.sid ==
1377                                                                         sop->o_sync_state.sid )
1378                                                                 {
1379                                                                         slog_found = 1;
1380                                                                         break;
1381                                                                 }
1382                                                         }
1383                                                 }
1384
1385                                                 if ( slog_found ) {
1386                                                         rs->sr_err = LDAP_SUCCESS;
1387                                                         rs->sr_rspoid = NULL;
1388                                                         rs->sr_ctrls = NULL;
1389                                                         slap_send_session_log( op, ps_list, rs );
1390                                                 }
1391                                                 ldap_pvt_thread_rdwr_runlock( &bdb->bi_pslist_rwlock );
1392                                         }
1393
1394                                         rs->sr_err = LDAP_SUCCESS;
1395                                         rs->sr_rspoid = LDAP_SYNC_INFO;
1396                                         rs->sr_ctrls = NULL;
1397                                         slap_send_syncinfo( sop, rs,
1398                                                 LDAP_TAG_SYNC_REFRESH_DELETE, &cookie, 1, NULL, 0 );
1399                                 }
1400
1401                                 if ( cookie.bv_val ) ch_free( cookie.bv_val );
1402
1403                         } else {
1404                                 /* refreshOnly mode */
1405                                 struct berval cookie;
1406                                 slap_compose_sync_cookie( sop, &cookie, search_context_csn,
1407                                         sop->o_sync_state.sid, sop->o_sync_state.rid );
1408
1409                                 if ( sync_send_present_mode ) {
1410                                         slap_build_sync_done_ctrl( sop, rs, ctrls,
1411                                                 num_ctrls++, 1, &cookie, LDAP_SYNC_REFRESH_PRESENTS );
1412
1413                                 } else {
1414                                         if ( !no_sync_state_change ) {
1415                                                 int slog_found = 0;
1416                                                 ldap_pvt_thread_rdwr_rlock( &bdb->bi_pslist_rwlock );
1417                                                 LDAP_LIST_FOREACH( ps_list, &bdb->bi_psearch_list,
1418                                                         o_ps_link )
1419                                                 {
1420                                                         if ( ps_list->o_sync_slog_size > 0 ) {
1421                                                                 if ( ps_list->o_sync_state.sid ==
1422                                                                                 sop->o_sync_state.sid ) {
1423                                                                         slog_found = 1;
1424                                                                         break;
1425                                                                 }
1426                                                         }
1427                                                 }
1428
1429                                                 if ( slog_found ) {
1430                                                         slap_send_session_log( op, ps_list, rs );
1431                                                 }
1432                                                 ldap_pvt_thread_rdwr_runlock( &bdb->bi_pslist_rwlock );
1433                                         }
1434
1435                                         slap_build_sync_done_ctrl( sop, rs, ctrls,
1436                                                 num_ctrls++, 1, &cookie, LDAP_SYNC_REFRESH_DELETES );
1437                                 }
1438
1439                                 rs->sr_ctrls = ctrls;
1440                                 rs->sr_ref = rs->sr_v2ref;
1441                                 rs->sr_err = (rs->sr_v2ref == NULL)
1442                                         ? LDAP_SUCCESS : LDAP_REFERRAL;
1443                                 rs->sr_rspoid = NULL;
1444                                 send_ldap_result( sop, rs );
1445                                 if ( ctrls[num_ctrls-1]->ldctl_value.bv_val != NULL ) {
1446                                         slap_sl_free( ctrls[num_ctrls-1]->ldctl_value.bv_val,
1447                                                 sop->o_tmpmemctx );
1448                                 }
1449                                 slap_sl_free( ctrls[--num_ctrls], sop->o_tmpmemctx );
1450                                 ctrls[num_ctrls] = NULL;
1451                                 if ( cookie.bv_val ) ch_free( cookie.bv_val );
1452                         }
1453
1454                 } else {
1455                         rs->sr_ctrls = NULL;
1456                         rs->sr_ref = rs->sr_v2ref;
1457                         rs->sr_err = (rs->sr_v2ref == NULL) ? LDAP_SUCCESS : LDAP_REFERRAL;
1458                         rs->sr_rspoid = NULL;
1459                         send_ldap_result( sop, rs );
1460                 }
1461         }
1462
1463         rs->sr_err = LDAP_SUCCESS;
1464
1465 done:
1466         if( !IS_PSEARCH && e != NULL ) {
1467                 /* free reader lock */
1468                 bdb_cache_return_entry_r( bdb->bi_dbenv, &bdb->bi_cache, e, &lock );
1469         }
1470
1471         LOCK_ID_FREE( bdb->bi_dbenv, locker );
1472
1473         ber_bvfree( search_context_csn );
1474
1475         if( rs->sr_v2ref ) {
1476                 ber_bvarray_free( rs->sr_v2ref );
1477                 rs->sr_v2ref = NULL;
1478         }
1479         if( realbase.bv_val ) ch_free( realbase.bv_val );
1480
1481         return rs->sr_err;
1482 }
1483
1484
1485 static int base_candidate(
1486         BackendDB       *be,
1487         Entry   *e,
1488         ID              *ids )
1489 {
1490 #ifdef NEW_LOGGING
1491         LDAP_LOG ( OPERATION, ENTRY,
1492                 "base_candidate: base: \"%s\" (0x%08lx)\n",
1493                 e->e_nname.bv_val, (long) e->e_id, 0);
1494 #else
1495         Debug(LDAP_DEBUG_ARGS, "base_candidates: base: \"%s\" (0x%08lx)\n",
1496                 e->e_nname.bv_val, (long) e->e_id, 0);
1497 #endif
1498
1499         ids[0] = 1;
1500         ids[1] = e->e_id;
1501         return 0;
1502 }
1503
1504 /* Look for "objectClass Present" in this filter.
1505  * Also count depth of filter tree while we're at it.
1506  */
1507 static int oc_filter(
1508         Filter *f,
1509         int cur,
1510         int *max )
1511 {
1512         int rc = 0;
1513
1514         assert( f );
1515
1516         if( cur > *max ) *max = cur;
1517
1518         switch( f->f_choice ) {
1519         case LDAP_FILTER_PRESENT:
1520                 if (f->f_desc == slap_schema.si_ad_objectClass) {
1521                         rc = 1;
1522                 }
1523                 break;
1524
1525         case LDAP_FILTER_AND:
1526         case LDAP_FILTER_OR:
1527                 cur++;
1528                 for ( f=f->f_and; f; f=f->f_next ) {
1529                         (void) oc_filter(f, cur, max);
1530                 }
1531                 break;
1532
1533         default:
1534                 break;
1535         }
1536         return rc;
1537 }
1538
1539 static void search_stack_free( void *key, void *data )
1540 {
1541         ber_memfree_x(data, NULL);
1542 }
1543
1544 static void *search_stack( Operation *op )
1545 {
1546         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
1547         void *ret = NULL;
1548
1549         if ( op->o_threadctx ) {
1550                 ldap_pvt_thread_pool_getkey( op->o_threadctx, search_stack,
1551                         &ret, NULL );
1552         } else {
1553                 ret = bdb->bi_search_stack;
1554         }
1555
1556         if ( !ret ) {
1557                 ret = ch_malloc( bdb->bi_search_stack_depth * BDB_IDL_UM_SIZE
1558                         * sizeof( ID ) );
1559                 if ( op->o_threadctx ) {
1560                         ldap_pvt_thread_pool_setkey( op->o_threadctx, search_stack,
1561                                 ret, search_stack_free );
1562                 } else {
1563                         bdb->bi_search_stack = ret;
1564                 }
1565         }
1566         return ret;
1567 }
1568
1569 static int search_candidates(
1570         Operation *stackop,
1571         Operation *op,
1572         SlapReply *rs,
1573         Entry *e,
1574         u_int32_t locker,
1575         ID      *ids,
1576         ID      *scopes )
1577 {
1578         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
1579         int rc, depth = 1;
1580         Filter          f, rf, xf, nf;
1581         ID              *stack;
1582         AttributeAssertion aa_ref;
1583 #ifdef BDB_SUBENTRIES
1584         Filter  sf;
1585         AttributeAssertion aa_subentry;
1586 #endif
1587
1588         /*
1589          * This routine takes as input a filter (user-filter)
1590          * and rewrites it as follows:
1591          *      (&(scope=DN)[(objectClass=subentry)]
1592          *              (|[(objectClass=referral)(objectClass=alias)](user-filter))
1593          */
1594
1595 #ifdef NEW_LOGGING
1596         LDAP_LOG ( OPERATION, ENTRY,
1597                 "search_candidates: base=\"%s\" (0x%08lx) scope=%d\n",
1598                 e->e_nname.bv_val, (long) e->e_id, op->oq_search.rs_scope);
1599 #else
1600         Debug(LDAP_DEBUG_TRACE,
1601                 "search_candidates: base=\"%s\" (0x%08lx) scope=%d\n",
1602                 e->e_nname.bv_val, (long) e->e_id, op->oq_search.rs_scope );
1603 #endif
1604
1605         xf.f_or = op->oq_search.rs_filter;
1606         xf.f_choice = LDAP_FILTER_OR;
1607         xf.f_next = NULL;
1608
1609         /* If the user's filter uses objectClass=*,
1610          * these clauses are redundant.
1611          */
1612         if (!oc_filter(op->oq_search.rs_filter, 1, &depth)
1613                 && !get_subentries_visibility(op)
1614                 && !is_sync_protocol(op) )
1615         {
1616                 if( !get_manageDSAit(op) && !get_domainScope(op) ) {
1617                         /* match referral objects */
1618                         struct berval bv_ref = { sizeof("referral")-1, "referral" };
1619                         rf.f_choice = LDAP_FILTER_EQUALITY;
1620                         rf.f_ava = &aa_ref;
1621                         rf.f_av_desc = slap_schema.si_ad_objectClass;
1622                         rf.f_av_value = bv_ref;
1623                         rf.f_next = xf.f_or;
1624                         xf.f_or = &rf;
1625                         depth++;
1626                 }
1627         }
1628
1629         f.f_next = NULL;
1630         f.f_choice = LDAP_FILTER_AND;
1631         f.f_and = &nf;
1632         /* Dummy; we compute scope separately now */
1633         nf.f_choice = SLAPD_FILTER_COMPUTED;
1634         nf.f_result = LDAP_SUCCESS;
1635         nf.f_next = ( xf.f_or == op->oq_search.rs_filter )
1636                 ? op->oq_search.rs_filter : &xf ;
1637         /* Filter depth increased again, adding dummy clause */
1638         depth++;
1639
1640 #ifdef BDB_SUBENTRIES
1641         if( get_subentries_visibility( op ) ) {
1642                 struct berval bv_subentry = { sizeof("SUBENTRY")-1, "SUBENTRY" };
1643                 sf.f_choice = LDAP_FILTER_EQUALITY;
1644                 sf.f_ava = &aa_subentry;
1645                 sf.f_av_desc = slap_schema.si_ad_objectClass;
1646                 sf.f_av_value = bv_subentry;
1647                 sf.f_next = nf.f_next;
1648                 nf.f_next = &sf;
1649         }
1650 #endif
1651
1652         /* Allocate IDL stack, plus 1 more for former tmp */
1653         if ( depth+1 > bdb->bi_search_stack_depth ) {
1654                 stack = ch_malloc( (depth + 1) * BDB_IDL_UM_SIZE * sizeof( ID ) );
1655         } else {
1656                 stack = search_stack( stackop );
1657         }
1658
1659         if( op->ors_deref & LDAP_DEREF_SEARCHING ) {
1660                 rc = search_aliases( op, rs, e, locker, ids, scopes, stack );
1661         } else {
1662                 rc = bdb_dn2idl( op, e, ids, stack );
1663         }
1664
1665         if ( rc == LDAP_SUCCESS ) {
1666                 rc = bdb_filter_candidates( op, &f, ids,
1667                         stack, stack+BDB_IDL_UM_SIZE );
1668         }
1669
1670         if ( depth+1 > bdb->bi_search_stack_depth ) {
1671                 ch_free( stack );
1672         }
1673
1674         if( rc ) {
1675 #ifdef NEW_LOGGING
1676                 LDAP_LOG ( OPERATION, DETAIL1,
1677                         "bdb_search_candidates: failed (rc=%d)\n", rc, 0, 0  );
1678 #else
1679                 Debug(LDAP_DEBUG_TRACE,
1680                         "bdb_search_candidates: failed (rc=%d)\n",
1681                         rc, NULL, NULL );
1682 #endif
1683
1684         } else {
1685 #ifdef NEW_LOGGING
1686                 LDAP_LOG ( OPERATION, DETAIL1,
1687                         "bdb_search_candidates: id=%ld first=%ld last=%ld\n",
1688                         (long) ids[0], (long) BDB_IDL_FIRST(ids),
1689                         (long) BDB_IDL_LAST(ids));
1690 #else
1691                 Debug(LDAP_DEBUG_TRACE,
1692                         "bdb_search_candidates: id=%ld first=%ld last=%ld\n",
1693                         (long) ids[0],
1694                         (long) BDB_IDL_FIRST(ids),
1695                         (long) BDB_IDL_LAST(ids) );
1696 #endif
1697         }
1698
1699         return rc;
1700 }
1701
1702 static void
1703 send_paged_response(
1704         Operation       *op,
1705         SlapReply       *rs,
1706         ID              lastid,
1707         int             tentries )
1708 {
1709         LDAPControl     ctrl, *ctrls[2];
1710         BerElementBuffer berbuf;
1711         BerElement      *ber = (BerElement *)&berbuf;
1712         struct berval   cookie = BER_BVNULL;
1713         PagedResultsCookie respcookie;
1714
1715 #ifdef NEW_LOGGING
1716         LDAP_LOG ( OPERATION, ENTRY,
1717                 "send_paged_response: lastid: (0x%08lx) "
1718                 "nentries: (0x%081x)\n",
1719                 lastid, rs->sr_nentries, NULL );
1720 #else
1721         Debug(LDAP_DEBUG_ARGS, "send_paged_response: lastid: (0x%08lx) "
1722                 "nentries: (0x%081x)\n", lastid, rs->sr_nentries, NULL );
1723 #endif
1724
1725         ctrl.ldctl_value.bv_val = NULL;
1726         ctrls[0] = &ctrl;
1727         ctrls[1] = NULL;
1728
1729         ber_init2( ber, NULL, LBER_USE_DER );
1730
1731         respcookie = ( PagedResultsCookie )lastid;
1732         op->o_conn->c_pagedresults_state.ps_cookie = respcookie;
1733         op->o_conn->c_pagedresults_state.ps_count =
1734                 op->o_pagedresults_state.ps_count + rs->sr_nentries;
1735         cookie.bv_len = sizeof( respcookie );
1736         cookie.bv_val = (char *)&respcookie;
1737
1738         /*
1739          * FIXME: we should consider sending an estimate of the entries
1740          * left, after appropriate security check is done
1741          */
1742         ber_printf( ber, "{iO}", tentries, &cookie );
1743
1744         if ( ber_flatten2( ber, &ctrls[0]->ldctl_value, 0 ) == -1 ) {
1745                 goto done;
1746         }
1747
1748         ctrls[0]->ldctl_oid = LDAP_CONTROL_PAGEDRESULTS;
1749         ctrls[0]->ldctl_iscritical = 0;
1750
1751         rs->sr_ctrls = ctrls;
1752         rs->sr_err = LDAP_SUCCESS;
1753         send_ldap_result( op, rs );
1754
1755 done:
1756         (void) ber_free_buf( ber );
1757 }
1758