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 static struct berval dummy = BER_BVNULL;
  45
  46 int
  47 ldap_back_search(
  48     Operation   *op,
  49     SlapReply *rs )
  50 {
  51         struct ldapinfo *li = (struct ldapinfo *) op->o_bd->be_private;
  52         struct ldapconn *lc;
  53         struct timeval  tv;
  54         LDAPMessage             *res, *e;
  55         int     rc = 0, msgid;
  56         struct berval match = BER_BVNULL;
  57         char **mapped_attrs = NULL;
  58         struct berval mbase;
  59         struct berval mfilter = BER_BVNULL;
  60         int dontfreetext = 0;
  61         int freeconn = 0;
  62         dncookie dc;
  63         LDAPControl **ctrls = NULL;
  64
  65         lc = ldap_back_getconn(op, rs);
  66         if ( !lc ) {
  67                 return( -1 );
  68         }
  69
  70         /*
  71          * FIXME: in case of values return filter, we might want
  72          * to map attrs and maybe rewrite value
  73          */
  74         if ( !ldap_back_dobind( lc, op, rs ) ) {
  75                 return( -1 );
  76         }
  77
  78         /* should we check return values? */
  79         if ( op->ors_deref != -1 ) {
  80                 ldap_set_option( lc->ld, LDAP_OPT_DEREF, (void *)&op->ors_deref );
  81         }
  82
  83         if ( op->ors_tlimit != SLAP_NO_LIMIT ) {
  84                 tv.tv_sec = op->ors_tlimit;
  85                 tv.tv_usec = 0;
  86
  87         } else {
  88                 tv.tv_sec = 0;
  89         }
  90
  91         /*
  92          * Rewrite the search base, if required
  93          */
  94         dc.rwmap = &li->rwmap;
  95 #ifdef ENABLE_REWRITE
  96         dc.conn = op->o_conn;
  97         dc.rs = rs;
  98         dc.ctx = "searchBase";
  99 #else
 100         dc.tofrom = 1;
 101         dc.normalized = 0;
 102 #endif
 103         if ( ldap_back_dn_massage( &dc, &op->o_req_ndn, &mbase ) ) {
 104                 send_ldap_result( op, rs );
 105                 return -1;
 106         }
 107
 108         rc = ldap_back_filter_map_rewrite( &dc, op->ors_filter,
 109                         &mfilter, BACKLDAP_MAP );
 110
 111         switch ( rc ) {
 112         case LDAP_SUCCESS:
 113                 break;
 114
 115         case LDAP_COMPARE_FALSE:
 116                 rs->sr_err = LDAP_SUCCESS;
 117                 rs->sr_text = NULL;
 118                 rc = 0;
 119                 goto finish;
 120
 121         default:
 122                 rs->sr_err = LDAP_OTHER;
 123                 rs->sr_text = "Rewrite error";
 124                 dontfreetext = 1;
 125                 rc = -1;
 126                 goto finish;
 127         }
 128
 129         rs->sr_err = ldap_back_map_attrs( &li->rwmap.rwm_at,
 130                         op->ors_attrs,
 131                         BACKLDAP_MAP, &mapped_attrs );
 132         if ( rs->sr_err != LDAP_SUCCESS ) {
 133                 rc = -1;
 134                 goto finish;
 135         }
 136
 137         ctrls = op->o_ctrls;
 138 #ifdef LDAP_BACK_PROXY_AUTHZ
 139         rc = ldap_back_proxy_authz_ctrl( lc, op, rs, &ctrls );
 140         if ( rc != LDAP_SUCCESS ) {
 141                 dontfreetext = 1;
 142                 goto finish;
 143         }
 144 #endif /* LDAP_BACK_PROXY_AUTHZ */
 145
 146         rs->sr_err = ldap_search_ext( lc->ld, mbase.bv_val,
 147                         op->ors_scope, mfilter.bv_val,
 148                         mapped_attrs, op->ors_attrsonly,
 149                         ctrls, NULL,
 150                         tv.tv_sec ? &tv : NULL, op->ors_slimit,
 151                         &msgid );
 152
 153         if ( rs->sr_err != LDAP_SUCCESS ) {
 154 fail:;
 155                 rc = ldap_back_op_result( lc, op, rs, msgid, 0 );
 156                 if ( freeconn ) {
 157                         ldap_back_freeconn( op, lc );
 158                         lc = NULL;
 159                 }
 160                 goto finish;
 161         }
 162
 163         /* We pull apart the ber result, stuff it into a slapd entry, and
 164          * let send_search_entry stuff it back into ber format. Slow & ugly,
 165          * but this is necessary for version matching, and for ACL processing.
 166          */
 167
 168         for ( rc = 0; rc != -1; rc = ldap_result( lc->ld, msgid, 0, &tv, &res ) )
 169         {
 170                 /* check for abandon */
 171                 if ( op->o_abandon ) {
 172                         ldap_abandon( lc->ld, msgid );
 173                         rc = 0;
 174                         goto finish;
 175                 }
 176
 177                 if ( rc == 0 ) {
 178                         tv.tv_sec = 0;
 179                         tv.tv_usec = 100000;
 180                         ldap_pvt_thread_yield();
 181
 182                 } else if ( rc == LDAP_RES_SEARCH_ENTRY ) {
 183                         Entry ent = {0};
 184                         struct berval bdn;
 185                         int abort = 0;
 186                         e = ldap_first_entry( lc->ld, res );
 187                         rc = ldap_build_entry( op, e, &ent, &bdn,
 188                                         LDAP_BUILD_ENTRY_PRIVATE );
 189                        if ( rc == LDAP_SUCCESS ) {
 190                                 rs->sr_entry = &ent;
 191                                 rs->sr_attrs = op->ors_attrs;
 192                                 rs->sr_operational_attrs = NULL;
 193                                 rs->sr_flags = 0;
 194                                 abort = send_search_entry( op, rs );
 195                                 while (ent.e_attrs) {
 196                                         Attribute *a;
 197                                         BerVarray v;
 198
 199                                         a = ent.e_attrs;
 200                                         ent.e_attrs = a->a_next;
 201
 202                                         v = a->a_vals;
 203                                         if ( a->a_vals != &dummy ) {
 204                                                 ber_bvarray_free(a->a_vals);
 205                                         }
 206                                         if ( a->a_nvals != v ) {
 207                                                 ber_bvarray_free(a->a_nvals);
 208                                         }
 209                                         ch_free(a);
 210                                 }
 211
 212                                 if ( ent.e_dn && ( ent.e_dn != bdn.bv_val ) )
 213                                         free( ent.e_dn );
 214                                 if ( ent.e_ndn )
 215                                         free( ent.e_ndn );
 216                         }
 217                         ldap_msgfree( res );
 218                         if ( abort ) {
 219                                 ldap_abandon( lc->ld, msgid );
 220                                 goto finish;
 221                         }
 222
 223                 } else if ( rc == LDAP_RES_SEARCH_REFERENCE ) {
 224                         char            **references = NULL;
 225                         int             cnt;
 226
 227                         rc = ldap_parse_reference( lc->ld, res,
 228                                         &references, &rs->sr_ctrls, 1 );
 229
 230                         if ( rc != LDAP_SUCCESS ) {
 231                                 continue;
 232                         }
 233
 234                         if ( references == NULL ) {
 235                                 continue;
 236                         }
 237
 238                         for ( cnt = 0; references[ cnt ]; cnt++ )
 239                                 /* NO OP */ ;
 240
 241                         rs->sr_ref = ch_calloc( cnt + 1, sizeof( struct berval ) );
 242
 243                         for ( cnt = 0; references[ cnt ]; cnt++ ) {
 244                                 ber_str2bv( references[ cnt ], 0, 0, &rs->sr_ref[ cnt ] );
 245                         }
 246
 247                         /* ignore return value by now */
 248                         ( void )send_search_reference( op, rs );
 249
 250                         /* cleanup */
 251                         if ( references ) {
 252                                 ldap_value_free( references );
 253                                 ch_free( rs->sr_ref );
 254                                 rs->sr_ref = NULL;
 255                         }
 256
 257                         if ( rs->sr_ctrls ) {
 258                                 ldap_controls_free( rs->sr_ctrls );
 259                                 rs->sr_ctrls = NULL;
 260                         }
 261
 262                 } else {
 263                         rc = ldap_parse_result( lc->ld, res, &rs->sr_err,
 264                                         &match.bv_val, (char **)&rs->sr_text,
 265                                         NULL, NULL, 1 );
 266                         if (rc != LDAP_SUCCESS ) {
 267                                 rs->sr_err = rc;
 268                         }
 269                         rs->sr_err = slap_map_api2result( rs );
 270                         rc = 0;
 271                         break;
 272                 }
 273         }
 274
 275         if ( rc == -1 ) {
 276                 /* FIXME: invalidate the connection? */
 277                 rs->sr_err = LDAP_SERVER_DOWN;
 278                 freeconn = 1;
 279                 goto fail;
 280         }
 281
 282         /*
 283          * Rewrite the matched portion of the search base, if required
 284          */
 285         if ( match.bv_val && *match.bv_val ) {
 286                 struct berval mdn;
 287
 288 #ifdef ENABLE_REWRITE
 289                 dc.ctx = "matchedDN";
 290 #else
 291                 dc.tofrom = 0;
 292                 dc.normalized = 0;
 293 #endif
 294                 match.bv_len = strlen( match.bv_val );
 295                 ldap_back_dn_massage( &dc, &match, &mdn );
 296                 rs->sr_matched = mdn.bv_val;
 297         }
 298         if ( rs->sr_v2ref ) {
 299                 rs->sr_err = LDAP_REFERRAL;
 300         }
 301
 302 finish:;
 303         send_ldap_result( op, rs );
 304
 305 #ifdef LDAP_BACK_PROXY_AUTHZ
 306         if ( ctrls && ctrls != op->o_ctrls ) {
 307                 free( ctrls[ 0 ] );
 308                 free( ctrls );
 309         }
 310 #endif /* LDAP_BACK_PROXY_AUTHZ */
 311
 312         if ( match.bv_val ) {
 313                 if ( rs->sr_matched != match.bv_val ) {
 314                         free( (char *)rs->sr_matched );
 315                 }
 316                 rs->sr_matched = NULL;
 317                 LDAP_FREE( match.bv_val );
 318         }
 319         if ( rs->sr_text ) {
 320                 if ( !dontfreetext ) {
 321                         LDAP_FREE( (char *)rs->sr_text );
 322                 }
 323                 rs->sr_text = NULL;
 324         }
 325         if ( mapped_attrs ) {
 326                 ch_free( mapped_attrs );
 327         }
 328         if ( mfilter.bv_val != op->ors_filterstr.bv_val ) {
 329                 ch_free( mfilter.bv_val );
 330         }
 331         if ( mbase.bv_val != op->o_req_ndn.bv_val ) {
 332                 free( mbase.bv_val );
 333         }
 334
 335         return rc;
 336 }
 337
 338 static int
 339 ldap_build_entry(
 340         Operation *op,
 341         LDAPMessage *e,
 342         Entry *ent,
 343         struct berval *bdn,
 344         int flags
 345 )
 346 {
 347         struct ldapinfo *li = (struct ldapinfo *) op->o_bd->be_private;
 348         struct berval a, mapped;
 349         BerElement ber = *e->lm_ber;
 350         Attribute *attr, **attrp;
 351         struct berval *bv;
 352         const char *text;
 353         int last;
 354         int private = flags & LDAP_BUILD_ENTRY_PRIVATE;
 355         dncookie dc;
 356
 357         /* safe assumptions ... */
 358         assert( ent );
 359         ent->e_bv.bv_val = NULL;
 360
 361         if ( ber_scanf( &ber, "{m{", bdn ) == LBER_ERROR ) {
 362                 return LDAP_DECODING_ERROR;
 363         }
 364
 365         /*
 366          * Rewrite the dn of the result, if needed
 367          */
 368         dc.rwmap = &li->rwmap;
 369 #ifdef ENABLE_REWRITE
 370         dc.conn = op->o_conn;
 371         dc.rs = NULL;
 372         dc.ctx = "searchResult";
 373 #else
 374         dc.tofrom = 0;
 375         dc.normalized = 0;
 376 #endif
 377         if ( ldap_back_dn_massage( &dc, bdn, &ent->e_name ) ) {
 378                 return LDAP_OTHER;
 379         }
 380
 381         /*
 382          * Note: this may fail if the target host(s) schema differs
 383          * from the one known to the meta, and a DN with unknown
 384          * attributes is returned.
 385          *
 386          * FIXME: should we log anything, or delegate to dnNormalize?
 387          */
 388         /* Note: if the distinguished values or the naming attributes
 389          * change, should we massage them as well?
 390          */
 391         if ( dnNormalize( 0, NULL, NULL, &ent->e_name, &ent->e_nname,
 392                 op->o_tmpmemctx ) != LDAP_SUCCESS )
 393         {
 394                 return LDAP_INVALID_DN_SYNTAX;
 395         }
 396
 397         attrp = &ent->e_attrs;
 398
 399 #ifdef ENABLE_REWRITE
 400         dc.ctx = "searchAttrDN";
 401 #endif
 402         while ( ber_scanf( &ber, "{m", &a ) != LBER_ERROR ) {
 403                 int             i;
 404                 slap_syntax_validate_func *validate =
 405                         attr->a_desc->ad_type->sat_syntax->ssyn_validate;
 406                 slap_syntax_transform_func *pretty =
 407                         attr->a_desc->ad_type->sat_syntax->ssyn_pretty;
 408
 409                 ldap_back_map( &li->rwmap.rwm_at, &a, &mapped, BACKLDAP_REMAP );
 410                 if ( BER_BVISNULL( &mapped ) || BER_BVISEMPTY( &mapped ) )
 411                         continue;
 412                 attr = (Attribute *)ch_malloc( sizeof( Attribute ) );
 413                 if ( attr == NULL )
 414                         continue;
 415                 attr->a_flags = 0;
 416                 attr->a_next = 0;
 417                 attr->a_desc = NULL;
 418                 if ( slap_bv2ad( &mapped, &attr->a_desc, &text ) != LDAP_SUCCESS ) {
 419                         if ( slap_bv2undef_ad( &mapped, &attr->a_desc, &text )
 420                                         != LDAP_SUCCESS )
 421                         {
 422 #ifdef NEW_LOGGING
 423                                 LDAP_LOG( BACK_LDAP, DETAIL1,
 424                                         "slap_bv2undef_ad(%s):  %s\n", mapped.bv_val, text, 0 );
 425 #else /* !NEW_LOGGING */
 426                                 Debug( LDAP_DEBUG_ANY,
 427                                         "slap_bv2undef_ad(%s):  %s\n", mapped.bv_val, text, 0 );
 428 #endif /* !NEW_LOGGING */
 429                                 ch_free( attr );
 430                                 continue;
 431                         }
 432                 }
 433
 434                 /* no subschemaSubentry */
 435                 if ( attr->a_desc == slap_schema.si_ad_subschemaSubentry ) {
 436
 437                         /*
 438                          * We eat target's subschemaSubentry because
 439                          * a search for this value is likely not
 440                          * to resolve to the appropriate backend;
 441                          * later, the local subschemaSubentry is
 442                          * added.
 443                          */
 444                         ( void )ber_scanf( &ber, "x" /* [W] */ );
 445
 446                         ch_free(attr);
 447                         continue;
 448                 }
 449
 450                 if ( ber_scanf( &ber, "[W]", &attr->a_vals ) == LBER_ERROR
 451                                 || attr->a_vals == NULL )
 452                 {
 453                         /*
 454                          * Note: attr->a_vals can be null when using
 455                          * values result filter
 456                          */
 457                         if ( private ) {
 458                                 attr->a_vals = &dummy;
 459                         } else {
 460                                 attr->a_vals = ch_malloc( sizeof( struct berval ) );
 461                                 BER_BVZERO( &attr->a_vals[0] );
 462                         }
 463                         last = 0;
 464
 465                 } else {
 466                         for ( last = 0; !BER_BVISNULL( &attr->a_vals[last] ); last++ );
 467                 }
 468
 469                 if ( last == 0 ) {
 470                         /* empty */
 471                 } else if ( attr->a_desc == slap_schema.si_ad_objectClass
 472                                 || attr->a_desc == slap_schema.si_ad_structuralObjectClass )
 473                 {
 474                         for ( bv = attr->a_vals; !BER_BVISNULL( bv ); bv++ ) {
 475                                 ldap_back_map( &li->rwmap.rwm_oc, bv, &mapped,
 476                                                 BACKLDAP_REMAP );
 477                                 if ( BER_BVISNULL( &mapped ) || BER_BVISEMPTY( &mapped ) ) {
 478                                         LBER_FREE( bv->bv_val );
 479                                         BER_BVZERO( bv );
 480                                         if (--last < 0)
 481                                                 break;
 482                                         *bv = attr->a_vals[last];
 483                                         BER_BVZERO( &attr->a_vals[last] );
 484                                         bv--;
 485
 486                                 } else if ( mapped.bv_val != bv->bv_val ) {
 487                                         /*
 488                                          * FIXME: after LBER_FREEing
 489                                          * the value is replaced by
 490                                          * ch_alloc'ed memory
 491                                          */
 492                                         LBER_FREE( bv->bv_val );
 493                                         ber_dupbv( bv, &mapped );
 494                                 }
 495                         }
 496
 497                 /*
 498                  * It is necessary to try to rewrite attributes with
 499                  * dn syntax because they might be used in ACLs as
 500                  * members of groups; since ACLs are applied to the
 501                  * rewritten stuff, no dn-based subject clause could
 502                  * be used at the ldap backend side (see
 503                  * http://www.OpenLDAP.org/faq/data/cache/452.html)
 504                  * The problem can be overcome by moving the dn-based
 505                  * ACLs to the target directory server, and letting
 506                  * everything pass thru the ldap backend.
 507                  */
 508                 } else if ( attr->a_desc->ad_type->sat_syntax ==
 509                                 slap_schema.si_syn_distinguishedName )
 510                 {
 511                         ldap_dnattr_result_rewrite( &dc, attr->a_vals );
 512                 }
 513
 514                 validate = attr->a_desc->ad_type->sat_syntax->ssyn_validate;
 515                 pretty = attr->a_desc->ad_type->sat_syntax->ssyn_pretty;
 516
 517                 if ( !validate && !pretty ) {
 518                         attr->a_nvals = NULL;
 519                         attr_free( attr );
 520                         goto next_attr;
 521                 }
 522
 523                 for ( i = 0; i < last; i++ ) {
 524                         struct berval   pval;
 525                         int             rc;
 526
 527                         if ( pretty ) {
 528                                 rc = pretty( attr->a_desc->ad_type->sat_syntax,
 529                                         &attr->a_vals[i], &pval, NULL );
 530                         } else {
 531                                 rc = validate( attr->a_desc->ad_type->sat_syntax,
 532                                         &attr->a_vals[i] );
 533                         }
 534
 535                         if ( rc != LDAP_SUCCESS ) {
 536                                 attr->a_nvals = NULL;
 537                                 attr_free( attr );
 538                                 goto next_attr;
 539                         }
 540
 541                         if ( pretty ) {
 542                                 LBER_FREE( attr->a_vals[i].bv_val );
 543                                 attr->a_vals[i] = pval;
 544                         }
 545                 }
 546
 547                 if ( last && attr->a_desc->ad_type->sat_equality &&
 548                                 attr->a_desc->ad_type->sat_equality->smr_normalize )
 549                 {
 550                         attr->a_nvals = ch_malloc( ( last + 1 )*sizeof( struct berval ) );
 551                         for ( i = 0; i < last; i++ ) {
 552                                 int             rc;
 553
 554                                 /*
 555                                  * check that each value is valid per syntax
 556                                  * and pretty if appropriate
 557                                  */
 558                                 rc = attr->a_desc->ad_type->sat_equality->smr_normalize(
 559                                         SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
 560                                         attr->a_desc->ad_type->sat_syntax,
 561                                         attr->a_desc->ad_type->sat_equality,
 562                                         &attr->a_vals[i], &attr->a_nvals[i],
 563                                         NULL /* op->o_tmpmemctx */ );
 564
 565                                 if ( rc != LDAP_SUCCESS ) {
 566                                         BER_BVZERO( &attr->a_nvals[i] );
 567                                         ch_free( attr );
 568                                         goto next_attr;
 569                                 }
 570                         }
 571                         BER_BVZERO( &attr->a_nvals[i] );
 572
 573                 } else {
 574                         attr->a_nvals = attr->a_vals;
 575                 }
 576                 *attrp = attr;
 577                 attrp = &attr->a_next;
 578
 579 next_attr:;
 580         }
 581
 582         /* make sure it's free'able */
 583         if ( !private && ent->e_name.bv_val == bdn->bv_val ) {
 584                 ber_dupbv( &ent->e_name, bdn );
 585         }
 586         return LDAP_SUCCESS;
 587 }
 588
 589 /* return 0 IFF we can retrieve the entry with ndn
 590  */
 591 int
 592 ldap_back_entry_get(
 593         Operation *op,
 594         struct berval   *ndn,
 595         ObjectClass *oc,
 596         AttributeDescription *at,
 597         int rw,
 598         Entry **ent
 599 )
 600 {
 601         struct ldapinfo *li = (struct ldapinfo *) op->o_bd->be_private;
 602         struct ldapconn *lc;
 603         int rc = 1, is_oc;
 604         struct berval mapped = BER_BVNULL, bdn, mdn;
 605         LDAPMessage     *result = NULL, *e = NULL;
 606         char *gattr[3];
 607         char *filter = NULL;
 608         Connection *oconn;
 609         SlapReply rs;
 610         dncookie dc;
 611
 612         /* Tell getconn this is a privileged op */
 613         is_oc = op->o_do_not_cache;
 614         op->o_do_not_cache = 1;
 615         lc = ldap_back_getconn(op, &rs);
 616         oconn = op->o_conn;
 617         op->o_conn = NULL;
 618         if ( !lc || !ldap_back_dobind(lc, op, &rs) ) {
 619                 op->o_do_not_cache = is_oc;
 620                 op->o_conn = oconn;
 621                 return 1;
 622         }
 623         op->o_do_not_cache = is_oc;
 624         op->o_conn = oconn;
 625
 626         /*
 627          * Rewrite the search base, if required
 628          */
 629         dc.rwmap = &li->rwmap;
 630 #ifdef ENABLE_REWRITE
 631         dc.conn = op->o_conn;
 632         dc.rs = &rs;
 633         dc.ctx = "searchBase";
 634 #else
 635         dc.tofrom = 1;
 636         dc.normalized = 1;
 637 #endif
 638         if ( ldap_back_dn_massage( &dc, ndn, &mdn ) ) {
 639                 return 1;
 640         }
 641
 642         if ( at ) {
 643                 ldap_back_map(&li->rwmap.rwm_at, &at->ad_cname, &mapped, BACKLDAP_MAP);
 644                 if ( BER_BVISNULL( &mapped ) || BER_BVISEMPTY( &mapped ) ) {
 645                         rc = 1;
 646                         goto cleanup;
 647                 }
 648                 is_oc = ( strcasecmp( "objectclass", mapped.bv_val ) == 0 );
 649                 if ( oc && !is_oc ) {
 650                         gattr[0] = "objectclass";
 651                         gattr[1] = mapped.bv_val;
 652                         gattr[2] = NULL;
 653
 654                 } else {
 655                         gattr[0] = mapped.bv_val;
 656                         gattr[1] = NULL;
 657                 }
 658         }
 659
 660         if (oc) {
 661                 char *ptr;
 662                 ldap_back_map(&li->rwmap.rwm_oc, &oc->soc_cname, &mapped,
 663                                                 BACKLDAP_MAP);
 664                 filter = ch_malloc( STRLENOF( "(objectclass=)" ) + mapped.bv_len + 1 );
 665                 ptr = lutil_strcopy( filter, "(objectclass=" );
 666                 ptr = lutil_strcopy( ptr, mapped.bv_val );
 667                 *ptr++ = ')';
 668                 *ptr++ = '\0';
 669         }
 670
 671         if ( ldap_search_ext_s( lc->ld, mdn.bv_val, LDAP_SCOPE_BASE, filter,
 672                                 gattr, 0, NULL, NULL, LDAP_NO_LIMIT,
 673                                 LDAP_NO_LIMIT, &result) != LDAP_SUCCESS )
 674         {
 675                 goto cleanup;
 676         }
 677
 678         e = ldap_first_entry( lc->ld, result );
 679         if ( e == NULL ) {
 680                 goto cleanup;
 681         }
 682
 683         *ent = ch_calloc( 1, sizeof( Entry ) );
 684
 685         rc = ldap_build_entry( op, e, *ent, &bdn, 0 );
 686
 687         if ( rc != LDAP_SUCCESS ) {
 688                 ch_free( *ent );
 689                 *ent = NULL;
 690         }
 691
 692 cleanup:
 693         if ( result ) {
 694                 ldap_msgfree( result );
 695         }
 696
 697         if ( filter ) {
 698                 ch_free( filter );
 699         }
 700
 701         if ( mdn.bv_val != ndn->bv_val ) {
 702                 ch_free( mdn.bv_val );
 703         }
 704
 705         return rc;
 706 }
 707