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

   1 /* search.c - ldap backend search function */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1999-2004 The OpenLDAP Foundation.
   6  * Portions Copyright 1999-2003 Howard Chu.
   7  * Portions Copyright 2000-2003 Pierangelo Masarati.
   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 the Howard Chu for inclusion
  20  * in OpenLDAP Software and subsequently enhanced by Pierangelo
  21  * Masarati.
  22  */
  23
  24 #include "portable.h"
  25
  26 #include <stdio.h>
  27
  28 #include <ac/socket.h>
  29 #include <ac/string.h>
  30 #include <ac/time.h>
  31
  32 #include "slap.h"
  33 #include "back-ldap.h"
  34 #undef ldap_debug       /* silence a warning in ldap-int.h */
  35 #include "../../../libraries/libldap/ldap-int.h"
  36
  37 #include "lutil.h"
  38
  39 static int
  40 ldap_build_entry( Operation *op, LDAPMessage *e, Entry *ent,
  41          struct berval *bdn, int flags );
  42 #define LDAP_BUILD_ENTRY_PRIVATE        0x01
  43
  44 int
  45 ldap_back_search(
  46     Operation   *op,
  47     SlapReply *rs )
  48 {
  49         struct ldapinfo *li = (struct ldapinfo *) op->o_bd->be_private;
  50         struct ldapconn *lc;
  51         struct timeval  tv;
  52         LDAPMessage             *res, *e;
  53         int     rc = 0, msgid;
  54         struct berval match = BER_BVNULL;
  55         char **mapped_attrs = NULL;
  56         struct berval mbase;
  57         struct berval mfilter = BER_BVNULL;
  58         int dontfreetext = 0;
  59         int freeconn = 0;
  60         dncookie dc;
  61         LDAPControl **ctrls = NULL;
  62
  63         lc = ldap_back_getconn(op, rs);
  64         if ( !lc ) {
  65                 return( -1 );
  66         }
  67
  68         /*
  69          * FIXME: in case of values return filter, we might want
  70          * to map attrs and maybe rewrite value
  71          */
  72         if ( !ldap_back_dobind( lc, op, rs ) ) {
  73                 return( -1 );
  74         }
  75
  76         /* should we check return values? */
  77         if ( op->ors_deref != -1 ) {
  78                 ldap_set_option( lc->ld, LDAP_OPT_DEREF, (void *)&op->ors_deref );
  79         }
  80
  81         if ( op->ors_tlimit != SLAP_NO_LIMIT ) {
  82                 tv.tv_sec = op->ors_tlimit;
  83                 tv.tv_usec = 0;
  84
  85         } else {
  86                 tv.tv_sec = 0;
  87         }
  88
  89         /*
  90          * Rewrite the search base, if required
  91          */
  92         dc.rwmap = &li->rwmap;
  93 #ifdef ENABLE_REWRITE
  94         dc.conn = op->o_conn;
  95         dc.rs = rs;
  96         dc.ctx = "searchBase";
  97 #else
  98         dc.tofrom = 1;
  99         dc.normalized = 0;
 100 #endif
 101         if ( ldap_back_dn_massage( &dc, &op->o_req_ndn, &mbase ) ) {
 102                 send_ldap_result( op, rs );
 103                 return -1;
 104         }
 105
 106         rc = ldap_back_filter_map_rewrite( &dc, op->ors_filter,
 107                         &mfilter, BACKLDAP_MAP );
 108
 109         switch ( rc ) {
 110         case LDAP_SUCCESS:
 111                 break;
 112
 113         case LDAP_COMPARE_FALSE:
 114                 rs->sr_err = LDAP_SUCCESS;
 115                 rs->sr_text = NULL;
 116                 rc = 0;
 117                 goto finish;
 118
 119         default:
 120                 rs->sr_err = LDAP_OTHER;
 121                 rs->sr_text = "Rewrite error";
 122                 dontfreetext = 1;
 123                 rc = -1;
 124                 goto finish;
 125         }
 126
 127         rs->sr_err = ldap_back_map_attrs( &li->rwmap.rwm_at,
 128                         op->ors_attrs,
 129                         BACKLDAP_MAP, &mapped_attrs );
 130         if ( rs->sr_err != LDAP_SUCCESS ) {
 131                 rc = -1;
 132                 goto finish;
 133         }
 134
 135         ctrls = op->o_ctrls;
 136 #ifdef LDAP_BACK_PROXY_AUTHZ
 137         rc = ldap_back_proxy_authz_ctrl( lc, op, rs, &ctrls );
 138         if ( rc != LDAP_SUCCESS ) {
 139                 dontfreetext = 1;
 140                 goto finish;
 141         }
 142 #endif /* LDAP_BACK_PROXY_AUTHZ */
 143
 144         rs->sr_err = ldap_search_ext( lc->ld, mbase.bv_val,
 145                         op->ors_scope, mfilter.bv_val,
 146                         mapped_attrs, op->ors_attrsonly,
 147                         ctrls, NULL,
 148                         tv.tv_sec ? &tv : NULL, op->ors_slimit,
 149                         &msgid );
 150
 151         if ( rs->sr_err != LDAP_SUCCESS ) {
 152 fail:;
 153                 rc = ldap_back_op_result( lc, op, rs, msgid, 0 );
 154                 if ( freeconn ) {
 155                         ldap_back_freeconn( op, lc );
 156                         lc = NULL;
 157                 }
 158                 goto finish;
 159         }
 160
 161         /* We pull apart the ber result, stuff it into a slapd entry, and
 162          * let send_search_entry stuff it back into ber format. Slow & ugly,
 163          * but this is necessary for version matching, and for ACL processing.
 164          */
 165
 166         for ( rc = 0; rc != -1; rc = ldap_result( lc->ld, msgid, 0, &tv, &res ) )
 167         {
 168                 /* check for abandon */
 169                 if ( op->o_abandon ) {
 170                         ldap_abandon( lc->ld, msgid );
 171                         rc = 0;
 172                         goto finish;
 173                 }
 174
 175                 if ( rc == 0 ) {
 176                         tv.tv_sec = 0;
 177                         tv.tv_usec = 100000;
 178                         ldap_pvt_thread_yield();
 179
 180                 } else if ( rc == LDAP_RES_SEARCH_ENTRY ) {
 181                         Entry ent = {0};
 182                         struct berval bdn;
 183                         int abort = 0;
 184                         e = ldap_first_entry( lc->ld, res );
 185                         rc = ldap_build_entry( op, e, &ent, &bdn,
 186                                         LDAP_BUILD_ENTRY_PRIVATE );
 187                        if ( rc == LDAP_SUCCESS ) {
 188                                 rs->sr_entry = &ent;
 189                                 rs->sr_attrs = op->ors_attrs;
 190                                 rs->sr_operational_attrs = NULL;
 191                                 rs->sr_flags = 0;
 192                                 abort = send_search_entry( op, rs );
 193                                 while (ent.e_attrs) {
 194                                         Attribute *a;
 195                                         BerVarray v;
 196
 197                                         a = ent.e_attrs;
 198                                         ent.e_attrs = a->a_next;
 199
 200                                         v = a->a_vals;
 201                                         if ( a->a_vals != &slap_dummy_bv ) {
 202                                                 ber_bvarray_free(a->a_vals);
 203                                         }
 204                                         if ( a->a_nvals != v ) {
 205                                                 ber_bvarray_free(a->a_nvals);
 206                                         }
 207                                         ch_free(a);
 208                                 }
 209
 210                                 if ( ent.e_dn && ( ent.e_dn != bdn.bv_val ) )
 211                                         free( ent.e_dn );
 212                                 if ( ent.e_ndn )
 213                                         free( ent.e_ndn );
 214                         }
 215                         ldap_msgfree( res );
 216                         if ( abort ) {
 217                                 ldap_abandon( lc->ld, msgid );
 218                                 goto finish;
 219                         }
 220
 221                 } else if ( rc == LDAP_RES_SEARCH_REFERENCE ) {
 222                         char            **references = NULL;
 223                         int             cnt;
 224
 225                         rc = ldap_parse_reference( lc->ld, res,
 226                                         &references, &rs->sr_ctrls, 1 );
 227
 228                         if ( rc != LDAP_SUCCESS ) {
 229                                 continue;
 230                         }
 231
 232                         if ( references == NULL ) {
 233                                 continue;
 234                         }
 235
 236                         for ( cnt = 0; references[ cnt ]; cnt++ )
 237                                 /* NO OP */ ;
 238
 239                         rs->sr_ref = ch_calloc( cnt + 1, sizeof( struct berval ) );
 240
 241                         for ( cnt = 0; references[ cnt ]; cnt++ ) {
 242                                 ber_str2bv( references[ cnt ], 0, 0, &rs->sr_ref[ cnt ] );
 243                         }
 244
 245                         /* ignore return value by now */
 246                         ( void )send_search_reference( op, rs );
 247
 248                         /* cleanup */
 249                         if ( references ) {
 250                                 ldap_value_free( references );
 251                                 ch_free( rs->sr_ref );
 252                                 rs->sr_ref = NULL;
 253                         }
 254
 255                         if ( rs->sr_ctrls ) {
 256                                 ldap_controls_free( rs->sr_ctrls );
 257                                 rs->sr_ctrls = NULL;
 258                         }
 259
 260                 } else {
 261                         rc = ldap_parse_result( lc->ld, res, &rs->sr_err,
 262                                         &match.bv_val, (char **)&rs->sr_text,
 263                                         NULL, NULL, 1 );
 264                         if (rc != LDAP_SUCCESS ) {
 265                                 rs->sr_err = rc;
 266                         }
 267                         rs->sr_err = slap_map_api2result( rs );
 268                         rc = 0;
 269                         break;
 270                 }
 271         }
 272
 273         if ( rc == -1 ) {
 274                 /* FIXME: invalidate the connection? */
 275                 rs->sr_err = LDAP_SERVER_DOWN;
 276                 freeconn = 1;
 277                 goto fail;
 278         }
 279
 280         /*
 281          * Rewrite the matched portion of the search base, if required
 282          */
 283         if ( match.bv_val && *match.bv_val ) {
 284                 struct berval mdn;
 285
 286 #ifdef ENABLE_REWRITE
 287                 dc.ctx = "matchedDN";
 288 #else
 289                 dc.tofrom = 0;
 290                 dc.normalized = 0;
 291 #endif
 292                 match.bv_len = strlen( match.bv_val );
 293                 ldap_back_dn_massage( &dc, &match, &mdn );
 294                 rs->sr_matched = mdn.bv_val;
 295         }
 296         if ( rs->sr_v2ref ) {
 297                 rs->sr_err = LDAP_REFERRAL;
 298         }
 299
 300 finish:;
 301         send_ldap_result( op, rs );
 302
 303 #ifdef LDAP_BACK_PROXY_AUTHZ
 304         if ( ctrls && ctrls != op->o_ctrls ) {
 305                 free( ctrls[ 0 ] );
 306                 free( ctrls );
 307         }
 308 #endif /* LDAP_BACK_PROXY_AUTHZ */
 309
 310         if ( match.bv_val ) {
 311                 if ( rs->sr_matched != match.bv_val ) {
 312                         free( (char *)rs->sr_matched );
 313                 }
 314                 rs->sr_matched = NULL;
 315                 LDAP_FREE( match.bv_val );
 316         }
 317         if ( rs->sr_text ) {
 318                 if ( !dontfreetext ) {
 319                         LDAP_FREE( (char *)rs->sr_text );
 320                 }
 321                 rs->sr_text = NULL;
 322         }
 323         if ( mapped_attrs ) {
 324                 ch_free( mapped_attrs );
 325         }
 326         if ( mfilter.bv_val != op->ors_filterstr.bv_val ) {
 327                 ch_free( mfilter.bv_val );
 328         }
 329         if ( mbase.bv_val != op->o_req_ndn.bv_val ) {
 330                 free( mbase.bv_val );
 331         }
 332
 333         return rc;
 334 }
 335
 336 static int
 337 ldap_build_entry(
 338         Operation *op,
 339         LDAPMessage *e,
 340         Entry *ent,
 341         struct berval *bdn,
 342         int flags
 343 )
 344 {
 345         struct ldapinfo *li = (struct ldapinfo *) op->o_bd->be_private;
 346         struct berval a, mapped;
 347         BerElement ber = *e->lm_ber;
 348         Attribute *attr, **attrp;
 349         struct berval *bv;
 350         const char *text;
 351         int last;
 352         int private = flags & LDAP_BUILD_ENTRY_PRIVATE;
 353         dncookie dc;
 354
 355         /* safe assumptions ... */
 356         assert( ent );
 357         ent->e_bv.bv_val = NULL;
 358
 359         if ( ber_scanf( &ber, "{m{", bdn ) == LBER_ERROR ) {
 360                 return LDAP_DECODING_ERROR;
 361         }
 362
 363         /*
 364          * Rewrite the dn of the result, if needed
 365          */
 366         dc.rwmap = &li->rwmap;
 367 #ifdef ENABLE_REWRITE
 368         dc.conn = op->o_conn;
 369         dc.rs = NULL;
 370         dc.ctx = "searchResult";
 371 #else
 372         dc.tofrom = 0;
 373         dc.normalized = 0;
 374 #endif
 375         if ( ldap_back_dn_massage( &dc, bdn, &ent->e_name ) ) {
 376                 return LDAP_OTHER;
 377         }
 378
 379         /*
 380          * Note: this may fail if the target host(s) schema differs
 381          * from the one known to the meta, and a DN with unknown
 382          * attributes is returned.
 383          *
 384          * FIXME: should we log anything, or delegate to dnNormalize?
 385          */
 386         /* Note: if the distinguished values or the naming attributes
 387          * change, should we massage them as well?
 388          */
 389         if ( dnNormalize( 0, NULL, NULL, &ent->e_name, &ent->e_nname,
 390                 op->o_tmpmemctx ) != LDAP_SUCCESS )
 391         {
 392                 return LDAP_INVALID_DN_SYNTAX;
 393         }
 394
 395         attrp = &ent->e_attrs;
 396
 397 #ifdef ENABLE_REWRITE
 398         dc.ctx = "searchAttrDN";
 399 #endif
 400         while ( ber_scanf( &ber, "{m", &a ) != LBER_ERROR ) {
 401                 int                             i;
 402                 slap_syntax_validate_func       *validate;
 403                 slap_syntax_transform_func      *pretty;
 404
 405                 ldap_back_map( &li->rwmap.rwm_at, &a, &mapped, BACKLDAP_REMAP );
 406                 if ( BER_BVISNULL( &mapped ) || BER_BVISEMPTY( &mapped ) )
 407                         continue;
 408                 attr = (Attribute *)ch_malloc( sizeof( Attribute ) );
 409                 if ( attr == NULL )
 410                         continue;
 411                 attr->a_flags = 0;
 412                 attr->a_next = 0;
 413                 attr->a_desc = NULL;
 414                 if ( slap_bv2ad( &mapped, &attr->a_desc, &text ) != LDAP_SUCCESS ) {
 415                         if ( slap_bv2undef_ad( &mapped, &attr->a_desc, &text )
 416                                         != LDAP_SUCCESS )
 417                         {
 418 #ifdef NEW_LOGGING
 419                                 LDAP_LOG( BACK_LDAP, DETAIL1,
 420                                         "slap_bv2undef_ad(%s):  %s\n", mapped.bv_val, text, 0 );
 421 #else /* !NEW_LOGGING */
 422                                 Debug( LDAP_DEBUG_ANY,
 423                                         "slap_bv2undef_ad(%s):  %s\n", mapped.bv_val, text, 0 );
 424 #endif /* !NEW_LOGGING */
 425                                 ch_free( attr );
 426                                 continue;
 427                         }
 428                 }
 429
 430                 /* no subschemaSubentry */
 431                 if ( attr->a_desc == slap_schema.si_ad_subschemaSubentry ) {
 432
 433                         /*
 434                          * We eat target's subschemaSubentry because
 435                          * a search for this value is likely not
 436                          * to resolve to the appropriate backend;
 437                          * later, the local subschemaSubentry is
 438                          * added.
 439                          */
 440                         ( void )ber_scanf( &ber, "x" /* [W] */ );
 441
 442                         ch_free(attr);
 443                         continue;
 444                 }
 445
 446                 if ( ber_scanf( &ber, "[W]", &attr->a_vals ) == LBER_ERROR
 447                                 || attr->a_vals == NULL )
 448                 {
 449                         /*
 450                          * Note: attr->a_vals can be null when using
 451                          * values result filter
 452                          */
 453                         if ( private ) {
 454                                 attr->a_vals = &slap_dummy_bv;
 455                         } else {
 456                                 attr->a_vals = ch_malloc( sizeof( struct berval ) );
 457                                 BER_BVZERO( &attr->a_vals[0] );
 458                         }
 459                         last = 0;
 460
 461                 } else {
 462                         for ( last = 0; !BER_BVISNULL( &attr->a_vals[last] ); last++ );
 463                 }
 464
 465                 if ( last == 0 ) {
 466                         /* empty */
 467                 } else if ( attr->a_desc == slap_schema.si_ad_objectClass
 468                                 || attr->a_desc == slap_schema.si_ad_structuralObjectClass )
 469                 {
 470                         for ( bv = attr->a_vals; !BER_BVISNULL( bv ); bv++ ) {
 471                                 ldap_back_map( &li->rwmap.rwm_oc, bv, &mapped,
 472                                                 BACKLDAP_REMAP );
 473                                 if ( BER_BVISNULL( &mapped ) || BER_BVISEMPTY( &mapped ) ) {
 474                                         LBER_FREE( bv->bv_val );
 475                                         BER_BVZERO( bv );
 476                                         if (--last < 0)
 477                                                 break;
 478                                         *bv = attr->a_vals[last];
 479                                         BER_BVZERO( &attr->a_vals[last] );
 480                                         bv--;
 481
 482                                 } else if ( mapped.bv_val != bv->bv_val ) {
 483                                         /*
 484                                          * FIXME: after LBER_FREEing
 485                                          * the value is replaced by
 486                                          * ch_alloc'ed memory
 487                                          */
 488                                         LBER_FREE( bv->bv_val );
 489                                         ber_dupbv( bv, &mapped );
 490                                 }
 491                         }
 492
 493                 /*
 494                  * It is necessary to try to rewrite attributes with
 495                  * dn syntax because they might be used in ACLs as
 496                  * members of groups; since ACLs are applied to the
 497                  * rewritten stuff, no dn-based subject clause could
 498                  * be used at the ldap backend side (see
 499                  * http://www.OpenLDAP.org/faq/data/cache/452.html)
 500                  * The problem can be overcome by moving the dn-based
 501                  * ACLs to the target directory server, and letting
 502                  * everything pass thru the ldap backend.
 503                  */
 504                 } else if ( attr->a_desc->ad_type->sat_syntax ==
 505                                 slap_schema.si_syn_distinguishedName )
 506                 {
 507                         ldap_dnattr_result_rewrite( &dc, attr->a_vals );
 508                 }
 509
 510                 validate = attr->a_desc->ad_type->sat_syntax->ssyn_validate;
 511                 pretty = attr->a_desc->ad_type->sat_syntax->ssyn_pretty;
 512
 513                 if ( !validate && !pretty ) {
 514                         attr->a_nvals = NULL;
 515                         attr_free( attr );
 516                         goto next_attr;
 517                 }
 518
 519                 for ( i = 0; i < last; i++ ) {
 520                         struct berval   pval;
 521                         int             rc;
 522
 523                         if ( pretty ) {
 524                                 rc = pretty( attr->a_desc->ad_type->sat_syntax,
 525                                         &attr->a_vals[i], &pval, NULL );
 526                         } else {
 527                                 rc = validate( attr->a_desc->ad_type->sat_syntax,
 528                                         &attr->a_vals[i] );
 529                         }
 530
 531                         if ( rc != LDAP_SUCCESS ) {
 532                                 attr->a_nvals = NULL;
 533                                 attr_free( attr );
 534                                 goto next_attr;
 535                         }
 536
 537                         if ( pretty ) {
 538                                 LBER_FREE( attr->a_vals[i].bv_val );
 539                                 attr->a_vals[i] = pval;
 540                         }
 541                 }
 542
 543                 if ( last && attr->a_desc->ad_type->sat_equality &&
 544                                 attr->a_desc->ad_type->sat_equality->smr_normalize )
 545                 {
 546                         attr->a_nvals = ch_malloc( ( last + 1 )*sizeof( struct berval ) );
 547                         for ( i = 0; i < last; i++ ) {
 548                                 int             rc;
 549
 550                                 /*
 551                                  * check that each value is valid per syntax
 552                                  * and pretty if appropriate
 553                                  */
 554                                 rc = attr->a_desc->ad_type->sat_equality->smr_normalize(
 555                                         SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
 556                                         attr->a_desc->ad_type->sat_syntax,
 557                                         attr->a_desc->ad_type->sat_equality,
 558                                         &attr->a_vals[i], &attr->a_nvals[i],
 559                                         NULL /* op->o_tmpmemctx */ );
 560
 561                                 if ( rc != LDAP_SUCCESS ) {
 562                                         BER_BVZERO( &attr->a_nvals[i] );
 563                                         ch_free( attr );
 564                                         goto next_attr;
 565                                 }
 566                         }
 567                         BER_BVZERO( &attr->a_nvals[i] );
 568
 569                 } else {
 570                         attr->a_nvals = attr->a_vals;
 571                 }
 572                 *attrp = attr;
 573                 attrp = &attr->a_next;
 574
 575 next_attr:;
 576         }
 577
 578         /* make sure it's free'able */
 579         if ( !private && ent->e_name.bv_val == bdn->bv_val ) {
 580                 ber_dupbv( &ent->e_name, bdn );
 581         }
 582         return LDAP_SUCCESS;
 583 }
 584
 585 /* return 0 IFF we can retrieve the entry with ndn
 586  */
 587 int
 588 ldap_back_entry_get(
 589         Operation *op,
 590         struct berval   *ndn,
 591         ObjectClass *oc,
 592         AttributeDescription *at,
 593         int rw,
 594         Entry **ent
 595 )
 596 {
 597         struct ldapinfo *li = (struct ldapinfo *) op->o_bd->be_private;
 598         struct ldapconn *lc;
 599         int rc = 1, is_oc;
 600         struct berval mapped = BER_BVNULL, bdn, mdn;
 601         LDAPMessage     *result = NULL, *e = NULL;
 602         char *gattr[3];
 603         char *filter = NULL;
 604         Connection *oconn;
 605         SlapReply rs;
 606         dncookie dc;
 607
 608         /* Tell getconn this is a privileged op */
 609         is_oc = op->o_do_not_cache;
 610         op->o_do_not_cache = 1;
 611         lc = ldap_back_getconn(op, &rs);
 612         oconn = op->o_conn;
 613         op->o_conn = NULL;
 614         if ( !lc || !ldap_back_dobind(lc, op, &rs) ) {
 615                 op->o_do_not_cache = is_oc;
 616                 op->o_conn = oconn;
 617                 return 1;
 618         }
 619         op->o_do_not_cache = is_oc;
 620         op->o_conn = oconn;
 621
 622         /*
 623          * Rewrite the search base, if required
 624          */
 625         dc.rwmap = &li->rwmap;
 626 #ifdef ENABLE_REWRITE
 627         dc.conn = op->o_conn;
 628         dc.rs = &rs;
 629         dc.ctx = "searchBase";
 630 #else
 631         dc.tofrom = 1;
 632         dc.normalized = 1;
 633 #endif
 634         if ( ldap_back_dn_massage( &dc, ndn, &mdn ) ) {
 635                 return 1;
 636         }
 637
 638         if ( at ) {
 639                 ldap_back_map(&li->rwmap.rwm_at, &at->ad_cname, &mapped, BACKLDAP_MAP);
 640                 if ( BER_BVISNULL( &mapped ) || BER_BVISEMPTY( &mapped ) ) {
 641                         rc = 1;
 642                         goto cleanup;
 643                 }
 644                 is_oc = ( strcasecmp( "objectclass", mapped.bv_val ) == 0 );
 645                 if ( oc && !is_oc ) {
 646                         gattr[0] = "objectclass";
 647                         gattr[1] = mapped.bv_val;
 648                         gattr[2] = NULL;
 649
 650                 } else {
 651                         gattr[0] = mapped.bv_val;
 652                         gattr[1] = NULL;
 653                 }
 654         }
 655
 656         if (oc) {
 657                 char *ptr;
 658                 ldap_back_map(&li->rwmap.rwm_oc, &oc->soc_cname, &mapped,
 659                                                 BACKLDAP_MAP);
 660                 filter = ch_malloc( STRLENOF( "(objectclass=)" ) + mapped.bv_len + 1 );
 661                 ptr = lutil_strcopy( filter, "(objectclass=" );
 662                 ptr = lutil_strcopy( ptr, mapped.bv_val );
 663                 *ptr++ = ')';
 664                 *ptr++ = '\0';
 665         }
 666
 667         if ( ldap_search_ext_s( lc->ld, mdn.bv_val, LDAP_SCOPE_BASE, filter,
 668                                 gattr, 0, NULL, NULL, LDAP_NO_LIMIT,
 669                                 LDAP_NO_LIMIT, &result) != LDAP_SUCCESS )
 670         {
 671                 goto cleanup;
 672         }
 673
 674         e = ldap_first_entry( lc->ld, result );
 675         if ( e == NULL ) {
 676                 goto cleanup;
 677         }
 678
 679         *ent = ch_calloc( 1, sizeof( Entry ) );
 680
 681         rc = ldap_build_entry( op, e, *ent, &bdn, 0 );
 682
 683         if ( rc != LDAP_SUCCESS ) {
 684                 ch_free( *ent );
 685                 *ent = NULL;
 686         }
 687
 688 cleanup:
 689         if ( result ) {
 690                 ldap_msgfree( result );
 691         }
 692
 693         if ( filter ) {
 694                 ch_free( filter );
 695         }
 696
 697         if ( mdn.bv_val != ndn->bv_val ) {
 698                 ch_free( mdn.bv_val );
 699         }
 700
 701         return rc;
 702 }
 703