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

   1 /* search.c - ldap backend search function */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
   5  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   6  */
   7 /* This is an altered version */
   8 /*
   9  * Copyright 1999, Howard Chu, All rights reserved. <hyc@highlandsun.com>
  10  *
  11  * Permission is granted to anyone to use this software for any purpose
  12  * on any computer system, and to alter it and redistribute it, subject
  13  * to the following restrictions:
  14  *
  15  * 1. The author is not responsible for the consequences of use of this
  16  *    software, no matter how awful, even if they arise from flaws in it.
  17  *
  18  * 2. The origin of this software must not be misrepresented, either by
  19  *    explicit claim or by omission.  Since few users ever read sources,
  20  *    credits should appear in the documentation.
  21  *
  22  * 3. Altered versions must be plainly marked as such, and must not be
  23  *    misrepresented as being the original software.  Since few users
  24  *    ever read sources, credits should appear in the documentation.
  25  *
  26  * 4. This notice may not be removed or altered.
  27  *
  28  *
  29  *
  30  * Copyright 2000, Pierangelo Masarati, All rights reserved. <ando@sys-net.it>
  31  *
  32  * This software is being modified by Pierangelo Masarati.
  33  * The previously reported conditions apply to the modified code as well.
  34  * Changes in the original code are highlighted where required.
  35  * Credits for the original code go to the author, Howard Chu.
  36  */
  37
  38 #include "portable.h"
  39
  40 #include <stdio.h>
  41
  42 #include <ac/socket.h>
  43 #include <ac/string.h>
  44 #include <ac/time.h>
  45
  46 #include "slap.h"
  47 #include "back-ldap.h"
  48 #undef ldap_debug       /* silence a warning in ldap-int.h */
  49 #include "../../../libraries/libldap/ldap-int.h"
  50
  51 #include "lutil.h"
  52
  53 static struct berval dummy = { 0, NULL };
  54
  55 int
  56 ldap_back_search(
  57     Operation   *op,
  58     SlapReply *rs )
  59 {
  60         struct ldapinfo *li = (struct ldapinfo *) op->o_bd->be_private;
  61         struct ldapconn *lc;
  62         struct timeval  tv;
  63         LDAPMessage             *res, *e;
  64         int     count, rc = 0, msgid;
  65         char *match = NULL;
  66         char **mapped_attrs = NULL;
  67         struct berval mbase;
  68         struct berval mfilter = { 0, NULL };
  69         struct slap_limits_set *limit = NULL;
  70         int isroot = 0;
  71
  72         lc = ldap_back_getconn(li, op, rs);
  73         if ( !lc ) {
  74                 return( -1 );
  75         }
  76
  77         /*
  78          * FIXME: in case of values return filter, we might want
  79          * to map attrs and maybe rewrite value
  80          */
  81         if ( !ldap_back_dobind( li, lc, op, rs ) ) {
  82                 return( -1 );
  83         }
  84
  85         /* if not root, get appropriate limits */
  86         if ( be_isroot( op->o_bd, &op->o_ndn ) ) {
  87                 isroot = 1;
  88         } else {
  89                 ( void ) get_limits( op->o_bd, &op->o_ndn, &limit );
  90         }
  91
  92         /* if no time limit requested, rely on remote server limits */
  93         /* if requested limit higher than hard limit, abort */
  94         if ( !isroot && op->oq_search.rs_tlimit > limit->lms_t_hard ) {
  95                 /* no hard limit means use soft instead */
  96                 if ( limit->lms_t_hard == 0
  97                                 && limit->lms_t_soft > -1
  98                                 && op->oq_search.rs_tlimit > limit->lms_t_soft ) {
  99                         op->oq_search.rs_tlimit = limit->lms_t_soft;
 100
 101                 /* positive hard limit means abort */
 102                 } else if ( limit->lms_t_hard > 0 ) {
 103                         rs->sr_err = LDAP_ADMINLIMIT_EXCEEDED;
 104                         send_ldap_result( op, rs );
 105                         rc = 0;
 106                         goto finish;
 107                 }
 108
 109                 /* negative hard limit means no limit */
 110         }
 111
 112         /* if no size limit requested, rely on remote server limits */
 113         /* if requested limit higher than hard limit, abort */
 114         if ( !isroot && op->oq_search.rs_slimit > limit->lms_s_hard ) {
 115                 /* no hard limit means use soft instead */
 116                 if ( limit->lms_s_hard == 0
 117                                 && limit->lms_s_soft > -1
 118                                 && op->oq_search.rs_slimit > limit->lms_s_soft ) {
 119                         op->oq_search.rs_slimit = limit->lms_s_soft;
 120
 121                 /* positive hard limit means abort */
 122                 } else if ( limit->lms_s_hard > 0 ) {
 123                         rs->sr_err = LDAP_ADMINLIMIT_EXCEEDED;
 124                         send_ldap_result( op, rs );
 125                         rc = 0;
 126                         goto finish;
 127                 }
 128
 129                 /* negative hard limit means no limit */
 130         }
 131
 132         /* should we check return values? */
 133         if (op->oq_search.rs_deref != -1)
 134                 ldap_set_option( lc->ld, LDAP_OPT_DEREF, (void *)&op->oq_search.rs_deref);
 135         if (op->oq_search.rs_tlimit != -1) {
 136                 tv.tv_sec = op->oq_search.rs_tlimit;
 137                 tv.tv_usec = 0;
 138         } else {
 139                 tv.tv_sec = 0;
 140         }
 141
 142         /*
 143          * Rewrite the search base, if required
 144          */
 145 #ifdef ENABLE_REWRITE
 146         switch ( rewrite_session( li->rwinfo, "searchBase",
 147                                 op->o_req_dn.bv_val, op->o_conn, &mbase.bv_val ) ) {
 148         case REWRITE_REGEXEC_OK:
 149                 if ( mbase.bv_val == NULL ) {
 150                         mbase = op->o_req_dn;
 151                 }
 152 #ifdef NEW_LOGGING
 153                 LDAP_LOG( BACK_LDAP, DETAIL1,
 154                         "[rw] searchBase: \"%s\" -> \"%s\"\n",
 155                         op->o_req_dn.bv_val, mbase.bv_val, 0 );
 156 #else /* !NEW_LOGGING */
 157                 Debug( LDAP_DEBUG_ARGS, "rw> searchBase: \"%s\" -> \"%s\"\n%s",
 158                                 op->o_req_dn.bv_val, mbase.bv_val, "" );
 159 #endif /* !NEW_LOGGING */
 160                 break;
 161
 162         case REWRITE_REGEXEC_UNWILLING:
 163                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 164                                 "Operation not allowed" );
 165                 rc = -1;
 166                 goto finish;
 167
 168         case REWRITE_REGEXEC_ERR:
 169                 send_ldap_error( op, rs, LDAP_OTHER,
 170                                 "Rewrite error" );
 171                 rc = -1;
 172                 goto finish;
 173         }
 174
 175 #else /* !ENABLE_REWRITE */
 176         ldap_back_dn_massage( li, &op->o_req_dn, &mbase, 0, 1 );
 177 #endif /* !ENABLE_REWRITE */
 178
 179 #ifdef ENABLE_REWRITE
 180         rc = ldap_back_filter_map_rewrite_( li->rwinfo, op->o_conn,
 181                         &li->at_map, &li->oc_map, op->oq_search.rs_filter, &mfilter,
 182                         BACKLDAP_MAP );
 183 #else /* ! ENABLE_REWRITE */
 184         rc = ldap_back_filter_map_rewrite_( &li->at_map, &li->oc_map,
 185                         op->oq_search.rs_filter, &mfilter, BACKLDAP_MAP );
 186 #endif /* ! ENABLE_REWRITE */
 187
 188         if ( rc ) {
 189                 rc = -1;
 190                 goto finish;
 191         }
 192
 193         mapped_attrs = ldap_back_map_attrs(&li->at_map, op->oq_search.rs_attrs, BACKLDAP_MAP);
 194         if ( mapped_attrs == NULL && op->oq_search.rs_attrs) {
 195                 for (count=0; op->oq_search.rs_attrs[count].an_name.bv_val; count++);
 196                 mapped_attrs = ch_malloc( (count+1) * sizeof(char *));
 197                 for (count=0; op->oq_search.rs_attrs[count].an_name.bv_val; count++) {
 198                         mapped_attrs[count] = op->oq_search.rs_attrs[count].an_name.bv_val;
 199                 }
 200                 mapped_attrs[count] = NULL;
 201         }
 202
 203         rc = ldap_search_ext(lc->ld, mbase.bv_val, op->oq_search.rs_scope, mfilter.bv_val,
 204                         mapped_attrs, op->oq_search.rs_attrsonly, op->o_ctrls, NULL, tv.tv_sec ? &tv
 205                         : NULL, op->oq_search.rs_slimit, &msgid);
 206         if ( rc != LDAP_SUCCESS ) {
 207 fail:;
 208                 rc = ldap_back_op_result(li, lc, op, rs, msgid, rc, 0);
 209                 goto finish;
 210         }
 211
 212         /* We pull apart the ber result, stuff it into a slapd entry, and
 213          * let send_search_entry stuff it back into ber format. Slow & ugly,
 214          * but this is necessary for version matching, and for ACL processing.
 215          */
 216
 217         for ( rc=0; rc != -1; rc = ldap_result(lc->ld, msgid, 0, &tv, &res))
 218         {
 219                 /* check for abandon */
 220                 if (op->o_abandon) {
 221                         ldap_abandon(lc->ld, msgid);
 222                         rc = 0;
 223                         goto finish;
 224                 }
 225
 226                 if (rc == 0) {
 227                         tv.tv_sec = 0;
 228                         tv.tv_usec = 100000;
 229                         ldap_pvt_thread_yield();
 230
 231                 } else if (rc == LDAP_RES_SEARCH_ENTRY) {
 232                         Entry ent;
 233                         struct berval bdn;
 234                         e = ldap_first_entry(lc->ld,res);
 235                         if ( ldap_build_entry(op, e, &ent, &bdn, 1) == LDAP_SUCCESS ) {
 236                                 Attribute *a;
 237                                 rs->sr_entry = &ent;
 238                                 rs->sr_attrs = op->oq_search.rs_attrs;
 239                                 send_search_entry( op, rs );
 240                                 while (ent.e_attrs) {
 241                                         a = ent.e_attrs;
 242                                         ent.e_attrs = a->a_next;
 243                                         if (a->a_vals != &dummy)
 244                                                 ber_bvarray_free(a->a_vals);
 245                                         ch_free(a);
 246                                 }
 247
 248                                 if ( ent.e_dn && ( ent.e_dn != bdn.bv_val ) )
 249                                         free( ent.e_dn );
 250                                 if ( ent.e_ndn )
 251                                         free( ent.e_ndn );
 252                         }
 253                         ldap_msgfree(res);
 254
 255                 } else if ( rc == LDAP_RES_SEARCH_REFERENCE ) {
 256                         char            **references = NULL;
 257                         int             cnt;
 258
 259                         rc = ldap_parse_reference( lc->ld, res,
 260                                         &references, &rs->sr_ctrls, 1 );
 261
 262                         if ( rc != LDAP_SUCCESS ) {
 263                                 continue;
 264                         }
 265
 266                         if ( references == NULL ) {
 267                                 continue;
 268                         }
 269
 270                         for ( cnt = 0; references[ cnt ]; cnt++ )
 271                                 /* NO OP */ ;
 272
 273                         rs->sr_ref = ch_calloc( cnt + 1, sizeof( struct berval ) );
 274
 275                         for ( cnt = 0; references[ cnt ]; cnt++ ) {
 276                                 rs->sr_ref[ cnt ].bv_val = references[ cnt ];
 277                                 rs->sr_ref[ cnt ].bv_len = strlen( references[ cnt ] );
 278                         }
 279
 280                         /* ignore return value by now */
 281                         ( void )send_search_reference( op, rs );
 282
 283                         /* cleanup */
 284                         if ( references ) {
 285                                 ldap_value_free( references );
 286                                 ch_free( rs->sr_ref );
 287                                 rs->sr_ref = NULL;
 288                         }
 289
 290                         if ( rs->sr_ctrls ) {
 291                                 ldap_controls_free( rs->sr_ctrls );
 292                                 rs->sr_ctrls = NULL;
 293                         }
 294
 295                 } else {
 296                         rc = ldap_parse_result(lc->ld, res, &rs->sr_err, &match,
 297                                 (char **)&rs->sr_text, NULL, NULL, 1);
 298                         if (rc != LDAP_SUCCESS ) rs->sr_err = rc;
 299                         rs->sr_err = ldap_back_map_result(rs->sr_err);
 300                         rc = 0;
 301                         break;
 302                 }
 303         }
 304
 305         if (rc == -1)
 306                 goto fail;
 307
 308 #ifdef ENABLE_REWRITE
 309         /*
 310          * Rewrite the matched portion of the search base, if required
 311          */
 312         if ( match != NULL ) {
 313                 switch ( rewrite_session( li->rwinfo, "matchedDn",
 314                                 match, op->o_conn, (char **)&rs->sr_matched ) ) {
 315                 case REWRITE_REGEXEC_OK:
 316                         if ( rs->sr_matched == NULL ) {
 317                                 rs->sr_matched = ( char * )match;
 318                         }
 319 #ifdef NEW_LOGGING
 320                         LDAP_LOG( BACK_LDAP, DETAIL1,
 321                                 "[rw]  matchedDn:" " \"%s\" -> \"%s\"\n", match, rs->sr_matched, 0 );
 322 #else /* !NEW_LOGGING */
 323                         Debug( LDAP_DEBUG_ARGS, "rw> matchedDn:"
 324                                         " \"%s\" -> \"%s\"\n%s",
 325                                         match, rs->sr_matched, "" );
 326 #endif /* !NEW_LOGGING */
 327                         break;
 328
 329                 case REWRITE_REGEXEC_UNWILLING:
 330
 331                 case REWRITE_REGEXEC_ERR:
 332                         /* FIXME: no error, but no matched ... */
 333                         rs->sr_matched = NULL;
 334                         break;
 335                 }
 336         }
 337 #else /* !ENABLE_REWRITE */
 338         if ( match != NULL ) {
 339                 struct berval dn, mdn;
 340
 341                 ber_str2bv(match, 0, 0, &dn);
 342                 ldap_back_dn_massage(li, &dn, &mdn, 0, 0);
 343                 rs->sr_matched = mdn.bv_val;
 344         }
 345 #endif /* !ENABLE_REWRITE */
 346         if ( rs->sr_v2ref ) {
 347                 rs->sr_err = LDAP_REFERRAL;
 348         }
 349         send_ldap_result( op, rs );
 350
 351 finish:;
 352         if ( match ) {
 353                 if ( rs->sr_matched != match ) {
 354                         free( (char *)rs->sr_matched );
 355                 }
 356                 rs->sr_matched = NULL;
 357                 LDAP_FREE(match);
 358         }
 359         if ( rs->sr_text ) {
 360                 LDAP_FREE( (char *)rs->sr_text );
 361                 rs->sr_text = NULL;
 362         }
 363         if ( mapped_attrs ) {
 364                 ch_free( mapped_attrs );
 365         }
 366         if ( mfilter.bv_val != op->oq_search.rs_filterstr.bv_val ) {
 367                 ch_free( mfilter.bv_val );
 368         }
 369         if ( mbase.bv_val != op->o_req_dn.bv_val ) {
 370                 free( mbase.bv_val );
 371         }
 372
 373         return rc;
 374 }
 375
 376 int
 377 ldap_build_entry(
 378         Operation *op,
 379         LDAPMessage *e,
 380         Entry *ent,
 381         struct berval *bdn,
 382         int private
 383 )
 384 {
 385         struct ldapinfo *li = (struct ldapinfo *) op->o_bd->be_private;
 386         struct berval a, mapped;
 387         BerElement ber = *e->lm_ber;
 388         Attribute *attr, **attrp;
 389         struct berval *bv;
 390         const char *text;
 391
 392         if ( ber_scanf( &ber, "{m{", bdn ) == LBER_ERROR ) {
 393                 return LDAP_DECODING_ERROR;
 394         }
 395 #ifdef ENABLE_REWRITE
 396
 397         /*
 398          * Rewrite the dn of the result, if needed
 399          */
 400         switch ( rewrite_session( li->rwinfo, "searchResult",
 401                                 bdn->bv_val, op->o_conn,
 402                                 &ent->e_name.bv_val ) ) {
 403         case REWRITE_REGEXEC_OK:
 404                 if ( ent->e_name.bv_val == NULL ) {
 405                         ent->e_name = *bdn;
 406                 } else {
 407 #ifdef NEW_LOGGING
 408                         LDAP_LOG( BACK_LDAP, DETAIL1,
 409                                 "[rw] searchResult: \"%s\"" " -> \"%s\"\n",
 410                                 bdn->bv_val, ent->e_dn, 0 );
 411 #else /* !NEW_LOGGING */
 412                         Debug( LDAP_DEBUG_ARGS, "rw> searchResult: \"%s\""
 413                                         " -> \"%s\"\n%s", bdn->bv_val, ent->e_dn, "" );
 414 #endif /* !NEW_LOGGING */
 415                         ent->e_name.bv_len = strlen( ent->e_name.bv_val );
 416                 }
 417                 break;
 418
 419         case REWRITE_REGEXEC_ERR:
 420         case REWRITE_REGEXEC_UNWILLING:
 421                 return LDAP_OTHER;
 422         }
 423 #else /* !ENABLE_REWRITE */
 424         ldap_back_dn_massage( li, bdn, &ent->e_name, 0, 0 );
 425 #endif /* !ENABLE_REWRITE */
 426
 427         /*
 428          * Note: this may fail if the target host(s) schema differs
 429          * from the one known to the meta, and a DN with unknown
 430          * attributes is returned.
 431          *
 432          * FIXME: should we log anything, or delegate to dnNormalize2?
 433          */
 434         if ( dnNormalize2( NULL, &ent->e_name, &ent->e_nname ) != LDAP_SUCCESS ) {
 435                 return LDAP_INVALID_DN_SYNTAX;
 436         }
 437
 438         ent->e_id = 0;
 439         ent->e_attrs = 0;
 440         ent->e_private = 0;
 441         attrp = &ent->e_attrs;
 442
 443         while ( ber_scanf( &ber, "{m", &a ) != LBER_ERROR ) {
 444                 ldap_back_map(&li->at_map, &a, &mapped, BACKLDAP_REMAP);
 445                 if (mapped.bv_val == NULL || mapped.bv_val[0] == '\0')
 446                         continue;
 447                 attr = (Attribute *)ch_malloc( sizeof(Attribute) );
 448                 if (attr == NULL)
 449                         continue;
 450                 attr->a_flags = 0;
 451                 attr->a_next = 0;
 452                 attr->a_desc = NULL;
 453                 if (slap_bv2ad(&mapped, &attr->a_desc, &text) != LDAP_SUCCESS) {
 454                         if (slap_bv2undef_ad(&mapped, &attr->a_desc, &text)
 455                                         != LDAP_SUCCESS) {
 456 #ifdef NEW_LOGGING
 457                                 LDAP_LOG( BACK_LDAP, DETAIL1,
 458                                         "slap_bv2undef_ad(%s):  %s\n", mapped.bv_val, text, 0 );
 459 #else /* !NEW_LOGGING */
 460                                 Debug( LDAP_DEBUG_ANY,
 461                                                 "slap_bv2undef_ad(%s):  "
 462                                                 "%s\n%s", mapped.bv_val, text, "" );
 463 #endif /* !NEW_LOGGING */
 464                                 ch_free(attr);
 465                                 continue;
 466                         }
 467                 }
 468
 469                 /* no subschemaSubentry */
 470                 if ( attr->a_desc == slap_schema.si_ad_subschemaSubentry ) {
 471                         ber_len_t       len;
 472
 473                         /*
 474                          * We eat target's subschemaSubentry because
 475                          * a search for this value is likely not
 476                          * to resolve to the appropriate backend;
 477                          * later, the local subschemaSubentry is
 478                          * added.
 479                          */
 480                         ber_skip_tag( &ber, &len );
 481
 482                         ch_free(attr);
 483                         continue;
 484                 }
 485
 486                 if ( ber_scanf( &ber, "[W]", &attr->a_vals ) == LBER_ERROR
 487                                 || attr->a_vals == NULL ) {
 488                         /*
 489                          * Note: attr->a_vals can be null when using
 490                          * values result filter
 491                          */
 492                         if (private) {
 493                                 attr->a_vals = &dummy;
 494                         } else {
 495                                 attr->a_vals = ch_malloc(sizeof(struct berval));
 496                                 attr->a_vals->bv_val = NULL;
 497                                 attr->a_vals->bv_len = 0;
 498                         }
 499                 } else if ( attr->a_desc == slap_schema.si_ad_objectClass
 500                                 || attr->a_desc == slap_schema.si_ad_structuralObjectClass ) {
 501                         int             last;
 502
 503                         for ( last = 0; attr->a_vals[last].bv_val; last++ );
 504
 505                         for ( bv = attr->a_vals; bv->bv_val; bv++ ) {
 506                                 ldap_back_map(&li->oc_map, bv, &mapped,
 507                                                 BACKLDAP_REMAP);
 508                                 if (mapped.bv_val == NULL || mapped.bv_val[0] == '\0') {
 509                                         LBER_FREE(bv->bv_val);
 510                                         bv->bv_val = NULL;
 511                                         if (--last < 0)
 512                                                 break;
 513                                         *bv = attr->a_vals[last];
 514                                         attr->a_vals[last].bv_val = NULL;
 515                                         bv--;
 516
 517                                 } else if ( mapped.bv_val != bv->bv_val ) {
 518                                         /*
 519                                          * FIXME: after LBER_FREEing
 520                                          * the value is replaced by
 521                                          * ch_alloc'ed memory
 522                                          */
 523                                         LBER_FREE(bv->bv_val);
 524                                         ber_dupbv( bv, &mapped );
 525                                 }
 526                         }
 527
 528                 /*
 529                  * It is necessary to try to rewrite attributes with
 530                  * dn syntax because they might be used in ACLs as
 531                  * members of groups; since ACLs are applied to the
 532                  * rewritten stuff, no dn-based subject clause could
 533                  * be used at the ldap backend side (see
 534                  * http://www.OpenLDAP.org/faq/data/cache/452.html)
 535                  * The problem can be overcome by moving the dn-based
 536                  * ACLs to the target directory server, and letting
 537                  * everything pass thru the ldap backend.
 538                  */
 539                 } else if ( strcmp( attr->a_desc->ad_type->sat_syntax->ssyn_oid,
 540                                         SLAPD_DN_SYNTAX ) == 0 ) {
 541                         int             last;
 542
 543                         for ( last = 0; attr->a_vals[last].bv_val; last++ );
 544
 545                         for ( bv = attr->a_vals; bv->bv_val; bv++ ) {
 546                                 struct berval   newval;
 547
 548 #ifdef ENABLE_REWRITE
 549                                 switch ( rewrite_session( li->rwinfo,
 550                                                         "searchResult",
 551                                                         bv->bv_val,
 552                                                         op->o_conn,
 553                                                         &newval.bv_val )) {
 554                                 case REWRITE_REGEXEC_OK:
 555                                         /* left as is */
 556                                         if ( newval.bv_val == NULL ) {
 557                                                 break;
 558                                         }
 559                                         newval.bv_len = strlen( newval.bv_val );
 560 #ifdef NEW_LOGGING
 561                                         LDAP_LOG( BACK_LDAP, DETAIL1,
 562                                                 "[rw] searchResult on attr=%s: \"%s\" -> \"%s\"\n",
 563                                                 attr->a_desc->ad_type->sat_cname.bv_val,
 564                                                 bv->bv_val, newval.bv_val );
 565 #else /* !NEW_LOGGING */
 566                                         Debug( LDAP_DEBUG_ARGS,
 567                 "rw> searchResult on attr=%s: \"%s\" -> \"%s\"\n",
 568                                                 attr->a_desc->ad_type->sat_cname.bv_val,
 569                                                 bv->bv_val, newval.bv_val );
 570 #endif /* !NEW_LOGGING */
 571                                         free( bv->bv_val );
 572                                         *bv = newval;
 573                                         break;
 574
 575                                 case REWRITE_REGEXEC_UNWILLING:
 576                                         LBER_FREE(bv->bv_val);
 577                                         bv->bv_val = NULL;
 578                                         if (--last < 0)
 579                                                 goto next_attr;
 580                                         *bv = attr->a_vals[last];
 581                                         attr->a_vals[last].bv_val = NULL;
 582                                         bv--;
 583                                         break;
 584
 585                                 case REWRITE_REGEXEC_ERR:
 586                                         /*
 587                                          * FIXME: better give up,
 588                                          * skip the attribute
 589                                          * or leave it untouched?
 590                                          */
 591                                         break;
 592                                 }
 593 #else /* !ENABLE_REWRITE */
 594                                 ldap_back_dn_massage( li, bv, &newval, 0, 0 );
 595                                 if ( bv->bv_val != newval.bv_val ) {
 596                                         LBER_FREE( bv->bv_val );
 597                                 }
 598                                 *bv = newval;
 599 #endif /* !ENABLE_REWRITE */
 600                         }
 601                 }
 602
 603 next_attr:;
 604
 605 #ifdef SLAP_NVALUES
 606                 attr->a_nvals = attr->a_vals;
 607 #endif
 608                 *attrp = attr;
 609                 attrp = &attr->a_next;
 610         }
 611         /* make sure it's free'able */
 612         if (!private && ent->e_name.bv_val == bdn->bv_val)
 613                 ber_dupbv( &ent->e_name, bdn );
 614         return LDAP_SUCCESS;
 615 }
 616
 617 /* return 0 IFF we can retrieve the entry with ndn
 618  */
 619 int
 620 ldap_back_entry_get(
 621         Operation *op,
 622         struct berval   *ndn,
 623         ObjectClass *oc,
 624         AttributeDescription *at,
 625         int rw,
 626         Entry **ent
 627 )
 628 {
 629         struct ldapinfo *li = (struct ldapinfo *) op->o_bd->be_private;
 630         struct ldapconn *lc;
 631         int rc = 1, is_oc;
 632         struct berval mapped = { 0, NULL }, bdn;
 633         LDAPMessage     *result = NULL, *e = NULL;
 634         char *gattr[3];
 635         char *filter;
 636         Connection *oconn;
 637         SlapReply rs;
 638
 639         ldap_back_map(&li->at_map, &at->ad_cname, &mapped, BACKLDAP_MAP);
 640         if (mapped.bv_val == NULL || mapped.bv_val[0] == '\0') {
 641                 return 1;
 642         }
 643
 644         /* Tell getconn this is a privileged op */
 645         is_oc = op->o_do_not_cache;
 646         op->o_do_not_cache = 1;
 647         lc = ldap_back_getconn(li, op, &rs);
 648         oconn = op->o_conn;
 649         op->o_conn = NULL;
 650         if ( !lc || !ldap_back_dobind(li, lc, op, &rs) ) {
 651                 op->o_do_not_cache = is_oc;
 652                 op->o_conn = oconn;
 653                 return 1;
 654         }
 655         op->o_do_not_cache = is_oc;
 656         op->o_conn = oconn;
 657
 658         is_oc = (strcasecmp("objectclass", mapped.bv_val) == 0);
 659         if (oc && !is_oc) {
 660                 gattr[0] = "objectclass";
 661                 gattr[1] = mapped.bv_val;
 662                 gattr[2] = NULL;
 663         } else {
 664                 gattr[0] = mapped.bv_val;
 665                 gattr[1] = NULL;
 666         }
 667         if (oc) {
 668                 char *ptr;
 669                 filter = ch_malloc(sizeof("(objectclass=)" + oc->soc_cname.bv_len));
 670                 ptr = lutil_strcopy(filter, "(objectclass=");
 671                 ptr = lutil_strcopy(ptr, oc->soc_cname.bv_val);
 672                 *ptr++ = ')';
 673                 *ptr++ = '\0';
 674         } else {
 675                 filter = "(objectclass=*)";
 676         }
 677
 678         if (ldap_search_ext_s(lc->ld, ndn->bv_val, LDAP_SCOPE_BASE, filter,
 679                                 gattr, 0, NULL, NULL, LDAP_NO_LIMIT,
 680                                 LDAP_NO_LIMIT, &result) != LDAP_SUCCESS)
 681         {
 682                 goto cleanup;
 683         }
 684
 685         if ((e = ldap_first_entry(lc->ld, result)) == NULL) {
 686                 goto cleanup;
 687         }
 688
 689         *ent = ch_malloc(sizeof(Entry));
 690
 691         rc = ldap_build_entry(op, e, *ent, &bdn, 0);
 692
 693         if (rc != LDAP_SUCCESS) {
 694                 ch_free(*ent);
 695                 *ent = NULL;
 696         }
 697
 698 cleanup:
 699         if (result) {
 700                 ldap_msgfree(result);
 701         }
 702
 703         return(rc);
 704 }
 705