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