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 #define LDAP_BUILD_ENTRY_NORMALIZE      0x02
  44
  45 static struct berval dummy = { 0, NULL };
  46
  47 int
  48 ldap_back_search(
  49     Operation   *op,
  50     SlapReply *rs )
  51 {
  52         struct ldapinfo *li = (struct ldapinfo *) op->o_bd->be_private;
  53         struct ldapconn *lc;
  54         struct timeval  tv;
  55         LDAPMessage             *res, *e;
  56         int     rc = 0, msgid;
  57         struct berval match = { 0, NULL };
  58         char **mapped_attrs = NULL;
  59         struct berval mbase;
  60         struct berval mfilter = { 0, NULL };
  61         struct slap_limits_set *limit = NULL;
  62         int isroot = 0;
  63         int dontfreetext = 0;
  64         dncookie dc;
  65 #ifdef LDAP_BACK_PROXY_AUTHZ
  66         LDAPControl **ctrls = NULL;
  67 #endif /* LDAP_BACK_PROXY_AUTHZ */
  68
  69         lc = ldap_back_getconn(op, rs);
  70         if ( !lc ) {
  71                 return( -1 );
  72         }
  73
  74         /*
  75          * FIXME: in case of values return filter, we might want
  76          * to map attrs and maybe rewrite value
  77          */
  78         if ( !ldap_back_dobind( lc, op, rs ) ) {
  79                 return( -1 );
  80         }
  81
  82         /* if not root, get appropriate limits */
  83         if ( be_isroot( op->o_bd, &op->o_ndn ) ) {
  84                 isroot = 1;
  85         } else {
  86                 ( void ) get_limits( op->o_bd, &op->o_ndn, &limit );
  87         }
  88
  89         /* if no time limit requested, rely on remote server limits */
  90         /* if requested limit higher than hard limit, abort */
  91         if ( !isroot && op->oq_search.rs_tlimit > limit->lms_t_hard ) {
  92                 /* no hard limit means use soft instead */
  93                 if ( limit->lms_t_hard == 0
  94                                 && limit->lms_t_soft > -1
  95                                 && op->oq_search.rs_tlimit > limit->lms_t_soft ) {
  96                         op->oq_search.rs_tlimit = limit->lms_t_soft;
  97
  98                 /* positive hard limit means abort */
  99                 } else if ( limit->lms_t_hard > 0 ) {
 100                         rs->sr_err = LDAP_ADMINLIMIT_EXCEEDED;
 101                         rc = 0;
 102                         goto finish;
 103                 }
 104
 105                 /* negative hard limit means no limit */
 106         }
 107
 108         /* if no size limit requested, rely on remote server limits */
 109         /* if requested limit higher than hard limit, abort */
 110         if ( !isroot && op->oq_search.rs_slimit > limit->lms_s_hard ) {
 111                 /* no hard limit means use soft instead */
 112                 if ( limit->lms_s_hard == 0
 113                                 && limit->lms_s_soft > -1
 114                                 && op->oq_search.rs_slimit > limit->lms_s_soft ) {
 115                         op->oq_search.rs_slimit = limit->lms_s_soft;
 116
 117                 /* positive hard limit means abort */
 118                 } else if ( limit->lms_s_hard > 0 ) {
 119                         rs->sr_err = LDAP_ADMINLIMIT_EXCEEDED;
 120                         rc = 0;
 121                         goto finish;
 122                 }
 123
 124                 /* negative hard limit means no limit */
 125         }
 126
 127         /* should we check return values? */
 128         if (op->oq_search.rs_deref != -1)
 129                 ldap_set_option( lc->ld, LDAP_OPT_DEREF, (void *)&op->oq_search.rs_deref);
 130         if (op->oq_search.rs_tlimit != -1) {
 131                 tv.tv_sec = op->oq_search.rs_tlimit;
 132                 tv.tv_usec = 0;
 133         } else {
 134                 tv.tv_sec = 0;
 135         }
 136
 137         /*
 138          * Rewrite the search base, if required
 139          */
 140         dc.rwmap = &li->rwmap;
 141 #ifdef ENABLE_REWRITE
 142         dc.conn = op->o_conn;
 143         dc.rs = rs;
 144         dc.ctx = "searchBase";
 145 #else
 146         dc.tofrom = 1;
 147         dc.normalized = 0;
 148 #endif
 149         if ( ldap_back_dn_massage( &dc, &op->o_req_ndn, &mbase ) ) {
 150                 send_ldap_result( op, rs );
 151                 return -1;
 152         }
 153
 154         rc = ldap_back_filter_map_rewrite( &dc, op->oq_search.rs_filter,
 155                         &mfilter, BACKLDAP_MAP );
 156
 157         if ( rc ) {
 158                 rs->sr_err = LDAP_OTHER;
 159                 rs->sr_text = "Rewrite error";
 160                 dontfreetext = 1;
 161                 rc = -1;
 162                 goto finish;
 163         }
 164
 165         rs->sr_err = ldap_back_map_attrs( &li->rwmap.rwm_at,
 166                         op->oq_search.rs_attrs,
 167                         BACKLDAP_MAP, &mapped_attrs );
 168         if ( rs->sr_err ) {
 169                 rc = -1;
 170                 goto finish;
 171         }
 172
 173 #ifdef LDAP_BACK_PROXY_AUTHZ
 174         rc = ldap_back_proxy_authz_ctrl( lc, op, rs, &ctrls );
 175         if ( rc != LDAP_SUCCESS ) {
 176                 dontfreetext = 1;
 177                 goto finish;
 178         }
 179 #endif /* LDAP_BACK_PROXY_AUTHZ */
 180
 181         rs->sr_err = ldap_search_ext(lc->ld, mbase.bv_val,
 182                         op->oq_search.rs_scope, mfilter.bv_val,
 183                         mapped_attrs, op->oq_search.rs_attrsonly,
 184 #ifdef LDAP_BACK_PROXY_AUTHZ
 185                         ctrls,
 186 #else /* ! LDAP_BACK_PROXY_AUTHZ */
 187                         op->o_ctrls,
 188 #endif /* ! LDAP_BACK_PROXY_AUTHZ */
 189                         NULL,
 190                         tv.tv_sec ? &tv : NULL, op->oq_search.rs_slimit,
 191                         &msgid );
 192
 193         if ( rs->sr_err != LDAP_SUCCESS ) {
 194 fail:;
 195                 rc = ldap_back_op_result(lc, op, rs, msgid, 0);
 196                 goto finish;
 197         }
 198
 199         /* We pull apart the ber result, stuff it into a slapd entry, and
 200          * let send_search_entry stuff it back into ber format. Slow & ugly,
 201          * but this is necessary for version matching, and for ACL processing.
 202          */
 203
 204         for ( rc=0; rc != -1; rc = ldap_result(lc->ld, msgid, 0, &tv, &res))
 205         {
 206                 /* check for abandon */
 207                 if (op->o_abandon) {
 208                         ldap_abandon(lc->ld, msgid);
 209                         rc = 0;
 210                         goto finish;
 211                 }
 212
 213                 if (rc == 0) {
 214                         tv.tv_sec = 0;
 215                         tv.tv_usec = 100000;
 216                         ldap_pvt_thread_yield();
 217
 218                 } else if (rc == LDAP_RES_SEARCH_ENTRY) {
 219                         Entry ent = {0};
 220                         struct berval bdn;
 221                         int abort = 0;
 222                         e = ldap_first_entry(lc->ld,res);
 223                         if ( ( rc = ldap_build_entry(op, e, &ent, &bdn,
 224                                                 LDAP_BUILD_ENTRY_PRIVATE)) == LDAP_SUCCESS ) {
 225                                 rs->sr_entry = &ent;
 226                                 rs->sr_attrs = op->oq_search.rs_attrs;
 227                                 abort = send_search_entry( op, rs );
 228                                 while (ent.e_attrs) {
 229                                         Attribute *a;
 230                                         BerVarray v;
 231
 232                                         a = ent.e_attrs;
 233                                         ent.e_attrs = a->a_next;
 234
 235                                         v = a->a_vals;
 236                                         if (a->a_vals != &dummy)
 237                                                 ber_bvarray_free(a->a_vals);
 238                                         if (a->a_nvals != v)
 239                                                 ber_bvarray_free(a->a_nvals);
 240                                         ch_free(a);
 241                                 }
 242
 243                                 if ( ent.e_dn && ( ent.e_dn != bdn.bv_val ) )
 244                                         free( ent.e_dn );
 245                                 if ( ent.e_ndn )
 246                                         free( ent.e_ndn );
 247                         }
 248                         ldap_msgfree(res);
 249                         if ( abort ) {
 250                                 ldap_abandon(lc->ld, msgid);
 251                                 goto finish;
 252                         }
 253
 254                 } else if ( rc == LDAP_RES_SEARCH_REFERENCE ) {
 255                         char            **references = NULL;
 256                         int             cnt;
 257
 258                         rc = ldap_parse_reference( lc->ld, res,
 259                                         &references, &rs->sr_ctrls, 1 );
 260
 261                         if ( rc != LDAP_SUCCESS ) {
 262                                 continue;
 263                         }
 264
 265                         if ( references == NULL ) {
 266                                 continue;
 267                         }
 268
 269                         for ( cnt = 0; references[ cnt ]; cnt++ )
 270                                 /* NO OP */ ;
 271
 272                         rs->sr_ref = ch_calloc( cnt + 1, sizeof( struct berval ) );
 273
 274                         for ( cnt = 0; references[ cnt ]; cnt++ ) {
 275                                 rs->sr_ref[ cnt ].bv_val = references[ cnt ];
 276                                 rs->sr_ref[ cnt ].bv_len = strlen( references[ cnt ] );
 277                         }
 278
 279                         /* ignore return value by now */
 280                         ( void )send_search_reference( op, rs );
 281
 282                         /* cleanup */
 283                         if ( references ) {
 284                                 ldap_value_free( references );
 285                                 ch_free( rs->sr_ref );
 286                                 rs->sr_ref = NULL;
 287                         }
 288
 289                         if ( rs->sr_ctrls ) {
 290                                 ldap_controls_free( rs->sr_ctrls );
 291                                 rs->sr_ctrls = NULL;
 292                         }
 293
 294                 } else {
 295                         rc = ldap_parse_result(lc->ld, res, &rs->sr_err,
 296                                         &match.bv_val, (char **)&rs->sr_text,
 297                                         NULL, NULL, 1);
 298                         if (rc != LDAP_SUCCESS ) rs->sr_err = rc;
 299                         rs->sr_err = ldap_back_map_result(rs);
 300                         rc = 0;
 301                         break;
 302                 }
 303         }
 304
 305         if (rc == -1)
 306                 goto fail;
 307
 308         /*
 309          * Rewrite the matched portion of the search base, if required
 310          */
 311         if ( match.bv_val && *match.bv_val ) {
 312                 struct berval mdn;
 313
 314 #ifdef ENABLE_REWRITE
 315                 dc.ctx = "matchedDn";
 316 #else
 317                 dc.tofrom = 0;
 318                 dc.normalized = 0;
 319 #endif
 320                 match.bv_len = strlen( match.bv_val );
 321                 ldap_back_dn_massage(&dc, &match, &mdn);
 322                 rs->sr_matched = mdn.bv_val;
 323         }
 324         if ( rs->sr_v2ref ) {
 325                 rs->sr_err = LDAP_REFERRAL;
 326         }
 327
 328 finish:;
 329         send_ldap_result( op, rs );
 330
 331 #ifdef LDAP_BACK_PROXY_AUTHZ
 332         if ( ctrls && ctrls != op->o_ctrls ) {
 333                 free( ctrls[ 0 ] );
 334                 free( ctrls );
 335         }
 336 #endif /* LDAP_BACK_PROXY_AUTHZ */
 337
 338         if ( match.bv_val ) {
 339                 if ( rs->sr_matched != match.bv_val ) {
 340                         free( (char *)rs->sr_matched );
 341                 }
 342                 rs->sr_matched = NULL;
 343                 LDAP_FREE( match.bv_val );
 344         }
 345         if ( rs->sr_text ) {
 346                 if ( !dontfreetext ) {
 347                         LDAP_FREE( (char *)rs->sr_text );
 348                 }
 349                 rs->sr_text = NULL;
 350         }
 351         if ( mapped_attrs ) {
 352                 ch_free( mapped_attrs );
 353         }
 354         if ( mfilter.bv_val != op->oq_search.rs_filterstr.bv_val ) {
 355                 ch_free( mfilter.bv_val );
 356         }
 357         if ( mbase.bv_val != op->o_req_dn.bv_val ) {
 358                 free( mbase.bv_val );
 359         }
 360
 361         return rc;
 362 }
 363
 364 static int
 365 ldap_build_entry(
 366         Operation *op,
 367         LDAPMessage *e,
 368         Entry *ent,
 369         struct berval *bdn,
 370         int flags
 371 )
 372 {
 373         struct ldapinfo *li = (struct ldapinfo *) op->o_bd->be_private;
 374         struct berval a, mapped;
 375         BerElement ber = *e->lm_ber;
 376         Attribute *attr, **attrp;
 377         struct berval *bv;
 378         const char *text;
 379         int last;
 380         int private = flags & LDAP_BUILD_ENTRY_PRIVATE;
 381         int normalize = flags & LDAP_BUILD_ENTRY_NORMALIZE;
 382         dncookie dc;
 383
 384         /* safe assumptions ... */
 385         assert( ent );
 386         ent->e_bv.bv_val = NULL;
 387
 388         if ( ber_scanf( &ber, "{m{", bdn ) == LBER_ERROR ) {
 389                 return LDAP_DECODING_ERROR;
 390         }
 391
 392         /*
 393          * Rewrite the dn of the result, if needed
 394          */
 395         dc.rwmap = &li->rwmap;
 396 #ifdef ENABLE_REWRITE
 397         dc.conn = op->o_conn;
 398         dc.rs = NULL;
 399         dc.ctx = "searchResult";
 400 #else
 401         dc.tofrom = 0;
 402         dc.normalized = 0;
 403 #endif
 404         if ( ldap_back_dn_massage( &dc, bdn, &ent->e_name ) ) {
 405                 return LDAP_OTHER;
 406         }
 407
 408         /*
 409          * Note: this may fail if the target host(s) schema differs
 410          * from the one known to the meta, and a DN with unknown
 411          * attributes is returned.
 412          *
 413          * FIXME: should we log anything, or delegate to dnNormalize?
 414          */
 415         if ( dnNormalize( 0, NULL, NULL, &ent->e_name, &ent->e_nname,
 416                 op->o_tmpmemctx ) != LDAP_SUCCESS )
 417         {
 418                 return LDAP_INVALID_DN_SYNTAX;
 419         }
 420
 421         attrp = &ent->e_attrs;
 422
 423 #ifdef ENABLE_REWRITE
 424         dc.ctx = "searchAttrDN";
 425 #endif
 426         while ( ber_scanf( &ber, "{m", &a ) != LBER_ERROR ) {
 427                 ldap_back_map(&li->rwmap.rwm_at, &a, &mapped, BACKLDAP_REMAP);
 428                 if (mapped.bv_val == NULL || mapped.bv_val[0] == '\0')
 429                         continue;
 430                 attr = (Attribute *)ch_malloc( sizeof(Attribute) );
 431                 if (attr == NULL)
 432                         continue;
 433                 attr->a_flags = 0;
 434                 attr->a_next = 0;
 435                 attr->a_desc = NULL;
 436                 if (slap_bv2ad(&mapped, &attr->a_desc, &text) != LDAP_SUCCESS) {
 437                         if (slap_bv2undef_ad(&mapped, &attr->a_desc, &text)
 438                                         != LDAP_SUCCESS) {
 439 #ifdef NEW_LOGGING
 440                                 LDAP_LOG( BACK_LDAP, DETAIL1,
 441                                         "slap_bv2undef_ad(%s):  %s\n", mapped.bv_val, text, 0 );
 442 #else /* !NEW_LOGGING */
 443                                 Debug( LDAP_DEBUG_ANY,
 444                                                 "slap_bv2undef_ad(%s):  "
 445                                                 "%s\n%s", mapped.bv_val, text, "" );
 446 #endif /* !NEW_LOGGING */
 447                                 ch_free(attr);
 448                                 continue;
 449                         }
 450                 }
 451
 452                 /* no subschemaSubentry */
 453                 if ( attr->a_desc == slap_schema.si_ad_subschemaSubentry ) {
 454
 455                         /*
 456                          * We eat target's subschemaSubentry because
 457                          * a search for this value is likely not
 458                          * to resolve to the appropriate backend;
 459                          * later, the local subschemaSubentry is
 460                          * added.
 461                          */
 462                         ( void )ber_scanf( &ber, "x" /* [W] */ );
 463
 464                         ch_free(attr);
 465                         continue;
 466                 }
 467
 468                 if ( ber_scanf( &ber, "[W]", &attr->a_vals ) == LBER_ERROR
 469                                 || attr->a_vals == NULL ) {
 470                         /*
 471                          * Note: attr->a_vals can be null when using
 472                          * values result filter
 473                          */
 474                         if (private) {
 475                                 attr->a_vals = &dummy;
 476                         } else {
 477                                 attr->a_vals = ch_malloc(sizeof(struct berval));
 478                                 attr->a_vals->bv_val = NULL;
 479                                 attr->a_vals->bv_len = 0;
 480                         }
 481                         last = 0;
 482                 } else {
 483                         for ( last = 0; attr->a_vals[last].bv_val; last++ );
 484                 }
 485                 if ( last == 0 ) {
 486                         /* empty */
 487                 } else if ( attr->a_desc == slap_schema.si_ad_objectClass
 488                                 || attr->a_desc == slap_schema.si_ad_structuralObjectClass ) {
 489                         for ( bv = attr->a_vals; bv->bv_val; bv++ ) {
 490                                 ldap_back_map(&li->rwmap.rwm_oc, bv, &mapped,
 491                                                 BACKLDAP_REMAP);
 492                                 if (mapped.bv_val == NULL || mapped.bv_val[0] == '\0') {
 493                                         LBER_FREE(bv->bv_val);
 494                                         bv->bv_val = NULL;
 495                                         if (--last < 0)
 496                                                 break;
 497                                         *bv = attr->a_vals[last];
 498                                         attr->a_vals[last].bv_val = NULL;
 499                                         bv--;
 500
 501                                 } else if ( mapped.bv_val != bv->bv_val ) {
 502                                         /*
 503                                          * FIXME: after LBER_FREEing
 504                                          * the value is replaced by
 505                                          * ch_alloc'ed memory
 506                                          */
 507                                         LBER_FREE(bv->bv_val);
 508                                         ber_dupbv( bv, &mapped );
 509                                 }
 510                         }
 511
 512                 /*
 513                  * It is necessary to try to rewrite attributes with
 514                  * dn syntax because they might be used in ACLs as
 515                  * members of groups; since ACLs are applied to the
 516                  * rewritten stuff, no dn-based subject clause could
 517                  * be used at the ldap backend side (see
 518                  * http://www.OpenLDAP.org/faq/data/cache/452.html)
 519                  * The problem can be overcome by moving the dn-based
 520                  * ACLs to the target directory server, and letting
 521                  * everything pass thru the ldap backend.
 522                  */
 523                 } else if ( attr->a_desc->ad_type->sat_syntax ==
 524                                 slap_schema.si_syn_distinguishedName ) {
 525                         ldap_dnattr_result_rewrite( &dc, attr->a_vals );
 526                 }
 527
 528                 if ( normalize && last && attr->a_desc->ad_type->sat_equality &&
 529                         attr->a_desc->ad_type->sat_equality->smr_normalize ) {
 530                         int i;
 531
 532                         attr->a_nvals = ch_malloc((last+1)*sizeof(struct berval));
 533                         for (i=0; i<last; i++) {
 534                                 attr->a_desc->ad_type->sat_equality->smr_normalize(
 535                                         SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
 536                                         attr->a_desc->ad_type->sat_syntax,
 537                                         attr->a_desc->ad_type->sat_equality,
 538                                         &attr->a_vals[i], &attr->a_nvals[i],
 539                                         NULL /* op->o_tmpmemctx */ );
 540                         }
 541                         attr->a_nvals[i].bv_val = NULL;
 542                         attr->a_nvals[i].bv_len = 0;
 543                 } else {
 544                         attr->a_nvals = attr->a_vals;
 545                 }
 546                 *attrp = attr;
 547                 attrp = &attr->a_next;
 548         }
 549
 550         /* make sure it's free'able */
 551         if (!private && ent->e_name.bv_val == bdn->bv_val)
 552                 ber_dupbv( &ent->e_name, bdn );
 553         return LDAP_SUCCESS;
 554 }
 555
 556 /* return 0 IFF we can retrieve the entry with ndn
 557  */
 558 int
 559 ldap_back_entry_get(
 560         Operation *op,
 561         struct berval   *ndn,
 562         ObjectClass *oc,
 563         AttributeDescription *at,
 564         int rw,
 565         Entry **ent
 566 )
 567 {
 568         struct ldapinfo *li = (struct ldapinfo *) op->o_bd->be_private;
 569         struct ldapconn *lc;
 570         int rc = 1, is_oc;
 571         struct berval mapped = { 0, NULL }, bdn, mdn;
 572         LDAPMessage     *result = NULL, *e = NULL;
 573         char *gattr[3];
 574         char *filter = NULL;
 575         Connection *oconn;
 576         SlapReply rs;
 577         dncookie dc;
 578
 579         /* Tell getconn this is a privileged op */
 580         is_oc = op->o_do_not_cache;
 581         op->o_do_not_cache = 1;
 582         lc = ldap_back_getconn(op, &rs);
 583         oconn = op->o_conn;
 584         op->o_conn = NULL;
 585         if ( !lc || !ldap_back_dobind(lc, op, &rs) ) {
 586                 op->o_do_not_cache = is_oc;
 587                 op->o_conn = oconn;
 588                 return 1;
 589         }
 590         op->o_do_not_cache = is_oc;
 591         op->o_conn = oconn;
 592
 593         /*
 594          * Rewrite the search base, if required
 595          */
 596         dc.rwmap = &li->rwmap;
 597 #ifdef ENABLE_REWRITE
 598         dc.conn = op->o_conn;
 599         dc.rs = &rs;
 600         dc.ctx = "searchBase";
 601 #else
 602         dc.tofrom = 1;
 603         dc.normalized = 1;
 604 #endif
 605         if ( ldap_back_dn_massage( &dc, ndn, &mdn ) ) {
 606                 return 1;
 607         }
 608
 609         if ( at ) {
 610                 ldap_back_map(&li->rwmap.rwm_at, &at->ad_cname, &mapped, BACKLDAP_MAP);
 611                 if (mapped.bv_val == NULL || mapped.bv_val[0] == '\0') {
 612                         rc = 1;
 613                         goto cleanup;
 614                 }
 615         }
 616
 617         is_oc = (strcasecmp("objectclass", mapped.bv_val) == 0);
 618         if (oc && !is_oc) {
 619                 gattr[0] = "objectclass";
 620                 gattr[1] = mapped.bv_val;
 621                 gattr[2] = NULL;
 622         } else {
 623                 gattr[0] = mapped.bv_val;
 624                 gattr[1] = NULL;
 625         }
 626         if (oc) {
 627                 char *ptr;
 628                 ldap_back_map(&li->rwmap.rwm_oc, &oc->soc_cname, &mapped,
 629                                                 BACKLDAP_MAP);
 630                 filter = ch_malloc(sizeof("(objectclass=)") + mapped.bv_len);
 631                 ptr = lutil_strcopy(filter, "(objectclass=");
 632                 ptr = lutil_strcopy(ptr, mapped.bv_val);
 633                 *ptr++ = ')';
 634                 *ptr++ = '\0';
 635         }
 636
 637         if (ldap_search_ext_s(lc->ld, mdn.bv_val, LDAP_SCOPE_BASE, filter,
 638                                 gattr, 0, NULL, NULL, LDAP_NO_LIMIT,
 639                                 LDAP_NO_LIMIT, &result) != LDAP_SUCCESS)
 640         {
 641                 goto cleanup;
 642         }
 643
 644         if ((e = ldap_first_entry(lc->ld, result)) == NULL) {
 645                 goto cleanup;
 646         }
 647
 648         *ent = ch_calloc(1,sizeof(Entry));
 649
 650         rc = ldap_build_entry(op, e, *ent, &bdn, LDAP_BUILD_ENTRY_NORMALIZE);
 651
 652         if (rc != LDAP_SUCCESS) {
 653                 ch_free(*ent);
 654                 *ent = NULL;
 655         }
 656
 657 cleanup:
 658         if (result) {
 659                 ldap_msgfree(result);
 660         }
 661
 662         if ( filter ) {
 663                 ch_free( filter );
 664         }
 665
 666         if ( mdn.bv_val != ndn->bv_val ) {
 667                 ch_free( mdn.bv_val );
 668         }
 669
 670         return(rc);
 671 }
 672