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(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( 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                 } else {
 152                         mbase.bv_len = strlen( mbase.bv_val );
 153                 }
 154 #ifdef NEW_LOGGING
 155                 LDAP_LOG( BACK_LDAP, DETAIL1,
 156                         "[rw] searchBase: \"%s\" -> \"%s\"\n",
 157                         op->o_req_dn.bv_val, mbase.bv_val, 0 );
 158 #else /* !NEW_LOGGING */
 159                 Debug( LDAP_DEBUG_ARGS, "rw> searchBase: \"%s\" -> \"%s\"\n%s",
 160                                 op->o_req_dn.bv_val, mbase.bv_val, "" );
 161 #endif /* !NEW_LOGGING */
 162                 break;
 163
 164         case REWRITE_REGEXEC_UNWILLING:
 165                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 166                                 "Operation not allowed" );
 167                 rc = -1;
 168                 goto finish;
 169
 170         case REWRITE_REGEXEC_ERR:
 171                 send_ldap_error( op, rs, LDAP_OTHER,
 172                                 "Rewrite error" );
 173                 rc = -1;
 174                 goto finish;
 175         }
 176
 177 #else /* !ENABLE_REWRITE */
 178         ldap_back_dn_massage( li, &op->o_req_dn, &mbase, 0, 1 );
 179 #endif /* !ENABLE_REWRITE */
 180
 181 #ifdef ENABLE_REWRITE
 182         rc = ldap_back_filter_map_rewrite_( li->rwinfo, op->o_conn,
 183                         &li->at_map, &li->oc_map, op->oq_search.rs_filter, &mfilter,
 184                         BACKLDAP_MAP );
 185 #else /* ! ENABLE_REWRITE */
 186         rc = ldap_back_filter_map_rewrite_( &li->at_map, &li->oc_map,
 187                         op->oq_search.rs_filter, &mfilter, BACKLDAP_MAP );
 188 #endif /* ! ENABLE_REWRITE */
 189
 190         if ( rc ) {
 191                 rc = -1;
 192                 goto finish;
 193         }
 194
 195         mapped_attrs = ldap_back_map_attrs(&li->at_map, op->oq_search.rs_attrs, BACKLDAP_MAP);
 196         if ( mapped_attrs == NULL && op->oq_search.rs_attrs) {
 197                 for (count=0; op->oq_search.rs_attrs[count].an_name.bv_val; count++);
 198                 mapped_attrs = ch_malloc( (count+1) * sizeof(char *));
 199                 for (count=0; op->oq_search.rs_attrs[count].an_name.bv_val; count++) {
 200                         mapped_attrs[count] = op->oq_search.rs_attrs[count].an_name.bv_val;
 201                 }
 202                 mapped_attrs[count] = NULL;
 203         }
 204
 205         rc = ldap_search_ext(lc->ld, mbase.bv_val, op->oq_search.rs_scope, mfilter.bv_val,
 206                         mapped_attrs, op->oq_search.rs_attrsonly, op->o_ctrls, NULL, tv.tv_sec ? &tv
 207                         : NULL, op->oq_search.rs_slimit, &msgid);
 208         if ( rc != LDAP_SUCCESS ) {
 209 fail:;
 210                 rc = ldap_back_op_result(lc, op, rs, msgid, rc, 0);
 211                 goto finish;
 212         }
 213
 214         /* We pull apart the ber result, stuff it into a slapd entry, and
 215          * let send_search_entry stuff it back into ber format. Slow & ugly,
 216          * but this is necessary for version matching, and for ACL processing.
 217          */
 218
 219         for ( rc=0; rc != -1; rc = ldap_result(lc->ld, msgid, 0, &tv, &res))
 220         {
 221                 /* check for abandon */
 222                 if (op->o_abandon) {
 223                         ldap_abandon(lc->ld, msgid);
 224                         rc = 0;
 225                         goto finish;
 226                 }
 227
 228                 if (rc == 0) {
 229                         tv.tv_sec = 0;
 230                         tv.tv_usec = 100000;
 231                         ldap_pvt_thread_yield();
 232
 233                 } else if (rc == LDAP_RES_SEARCH_ENTRY) {
 234                         Entry ent;
 235                         struct berval bdn;
 236                         e = ldap_first_entry(lc->ld,res);
 237                         if ( ldap_build_entry(op, e, &ent, &bdn, 1) == LDAP_SUCCESS ) {
 238                                 Attribute *a;
 239                                 rs->sr_entry = &ent;
 240                                 rs->sr_attrs = op->oq_search.rs_attrs;
 241                                 send_search_entry( op, rs );
 242                                 while (ent.e_attrs) {
 243                                         a = ent.e_attrs;
 244                                         ent.e_attrs = a->a_next;
 245                                         if (a->a_vals != &dummy)
 246                                                 ber_bvarray_free(a->a_vals);
 247 #ifdef SLAP_NVALUES
 248                                         if (a->a_nvals != a->a_vals)
 249                                                 ber_bvarray_free(a->a_nvals);
 250 #endif
 251                                         ch_free(a);
 252                                 }
 253
 254                                 if ( ent.e_dn && ( ent.e_dn != bdn.bv_val ) )
 255                                         free( ent.e_dn );
 256                                 if ( ent.e_ndn )
 257                                         free( ent.e_ndn );
 258                         }
 259                         ldap_msgfree(res);
 260
 261                 } else if ( rc == LDAP_RES_SEARCH_REFERENCE ) {
 262                         char            **references = NULL;
 263                         int             cnt;
 264
 265                         rc = ldap_parse_reference( lc->ld, res,
 266                                         &references, &rs->sr_ctrls, 1 );
 267
 268                         if ( rc != LDAP_SUCCESS ) {
 269                                 continue;
 270                         }
 271
 272                         if ( references == NULL ) {
 273                                 continue;
 274                         }
 275
 276                         for ( cnt = 0; references[ cnt ]; cnt++ )
 277                                 /* NO OP */ ;
 278
 279                         rs->sr_ref = ch_calloc( cnt + 1, sizeof( struct berval ) );
 280
 281                         for ( cnt = 0; references[ cnt ]; cnt++ ) {
 282                                 rs->sr_ref[ cnt ].bv_val = references[ cnt ];
 283                                 rs->sr_ref[ cnt ].bv_len = strlen( references[ cnt ] );
 284                         }
 285
 286                         /* ignore return value by now */
 287                         ( void )send_search_reference( op, rs );
 288
 289                         /* cleanup */
 290                         if ( references ) {
 291                                 ldap_value_free( references );
 292                                 ch_free( rs->sr_ref );
 293                                 rs->sr_ref = NULL;
 294                         }
 295
 296                         if ( rs->sr_ctrls ) {
 297                                 ldap_controls_free( rs->sr_ctrls );
 298                                 rs->sr_ctrls = NULL;
 299                         }
 300
 301                 } else {
 302                         rc = ldap_parse_result(lc->ld, res, &rs->sr_err, &match,
 303                                 (char **)&rs->sr_text, NULL, NULL, 1);
 304                         if (rc != LDAP_SUCCESS ) rs->sr_err = rc;
 305                         rs->sr_err = ldap_back_map_result(rs->sr_err);
 306                         rc = 0;
 307                         break;
 308                 }
 309         }
 310
 311         if (rc == -1)
 312                 goto fail;
 313
 314 #ifdef ENABLE_REWRITE
 315         /*
 316          * Rewrite the matched portion of the search base, if required
 317          */
 318         if ( match != NULL ) {
 319                 switch ( rewrite_session( li->rwinfo, "matchedDn",
 320                                 match, op->o_conn, (char **)&rs->sr_matched ) ) {
 321                 case REWRITE_REGEXEC_OK:
 322                         if ( rs->sr_matched == NULL ) {
 323                                 rs->sr_matched = ( char * )match;
 324                         }
 325 #ifdef NEW_LOGGING
 326                         LDAP_LOG( BACK_LDAP, DETAIL1,
 327                                 "[rw]  matchedDn:" " \"%s\" -> \"%s\"\n", match, rs->sr_matched, 0 );
 328 #else /* !NEW_LOGGING */
 329                         Debug( LDAP_DEBUG_ARGS, "rw> matchedDn:"
 330                                         " \"%s\" -> \"%s\"\n%s",
 331                                         match, rs->sr_matched, "" );
 332 #endif /* !NEW_LOGGING */
 333                         break;
 334
 335                 case REWRITE_REGEXEC_UNWILLING:
 336
 337                 case REWRITE_REGEXEC_ERR:
 338                         /* FIXME: no error, but no matched ... */
 339                         rs->sr_matched = NULL;
 340                         break;
 341                 }
 342         }
 343 #else /* !ENABLE_REWRITE */
 344         if ( match != NULL ) {
 345                 struct berval dn, mdn;
 346
 347                 ber_str2bv(match, 0, 0, &dn);
 348                 ldap_back_dn_massage(li, &dn, &mdn, 0, 0);
 349                 rs->sr_matched = mdn.bv_val;
 350         }
 351 #endif /* !ENABLE_REWRITE */
 352         if ( rs->sr_v2ref ) {
 353                 rs->sr_err = LDAP_REFERRAL;
 354         }
 355         send_ldap_result( op, rs );
 356
 357 finish:;
 358         if ( match ) {
 359                 if ( rs->sr_matched != match ) {
 360                         free( (char *)rs->sr_matched );
 361                 }
 362                 rs->sr_matched = NULL;
 363                 LDAP_FREE(match);
 364         }
 365         if ( rs->sr_text ) {
 366                 LDAP_FREE( (char *)rs->sr_text );
 367                 rs->sr_text = NULL;
 368         }
 369         if ( mapped_attrs ) {
 370                 ch_free( mapped_attrs );
 371         }
 372         if ( mfilter.bv_val != op->oq_search.rs_filterstr.bv_val ) {
 373                 ch_free( mfilter.bv_val );
 374         }
 375         if ( mbase.bv_val != op->o_req_dn.bv_val ) {
 376                 free( mbase.bv_val );
 377         }
 378
 379         return rc;
 380 }
 381
 382 int
 383 ldap_build_entry(
 384         Operation *op,
 385         LDAPMessage *e,
 386         Entry *ent,
 387         struct berval *bdn,
 388         int private
 389 )
 390 {
 391         struct ldapinfo *li = (struct ldapinfo *) op->o_bd->be_private;
 392         struct berval a, mapped;
 393         BerElement ber = *e->lm_ber;
 394         Attribute *attr, **attrp;
 395         struct berval *bv;
 396         const char *text;
 397         int last;
 398
 399         /* safe assumptions ... */
 400         assert( ent );
 401         ent->e_bv.bv_val = NULL;
 402
 403         if ( ber_scanf( &ber, "{m{", bdn ) == LBER_ERROR ) {
 404                 return LDAP_DECODING_ERROR;
 405         }
 406 #ifdef ENABLE_REWRITE
 407
 408         /*
 409          * Rewrite the dn of the result, if needed
 410          */
 411         switch ( rewrite_session( li->rwinfo, "searchResult",
 412                                 bdn->bv_val, op->o_conn,
 413                                 &ent->e_name.bv_val ) ) {
 414         case REWRITE_REGEXEC_OK:
 415                 if ( ent->e_name.bv_val == NULL ) {
 416                         ent->e_name = *bdn;
 417                 } else {
 418 #ifdef NEW_LOGGING
 419                         LDAP_LOG( BACK_LDAP, DETAIL1,
 420                                 "[rw] searchResult: \"%s\"" " -> \"%s\"\n",
 421                                 bdn->bv_val, ent->e_dn, 0 );
 422 #else /* !NEW_LOGGING */
 423                         Debug( LDAP_DEBUG_ARGS, "rw> searchResult: \"%s\""
 424                                         " -> \"%s\"\n%s", bdn->bv_val, ent->e_dn, "" );
 425 #endif /* !NEW_LOGGING */
 426                         ent->e_name.bv_len = strlen( ent->e_name.bv_val );
 427                 }
 428                 break;
 429
 430         case REWRITE_REGEXEC_ERR:
 431         case REWRITE_REGEXEC_UNWILLING:
 432                 return LDAP_OTHER;
 433         }
 434 #else /* !ENABLE_REWRITE */
 435         ldap_back_dn_massage( li, bdn, &ent->e_name, 0, 0 );
 436 #endif /* !ENABLE_REWRITE */
 437
 438         /*
 439          * Note: this may fail if the target host(s) schema differs
 440          * from the one known to the meta, and a DN with unknown
 441          * attributes is returned.
 442          *
 443          * FIXME: should we log anything, or delegate to dnNormalize2?
 444          */
 445         if ( dnNormalize2( NULL, &ent->e_name, &ent->e_nname ) != LDAP_SUCCESS ) {
 446                 return LDAP_INVALID_DN_SYNTAX;
 447         }
 448
 449         ent->e_id = 0;
 450         ent->e_attrs = 0;
 451         ent->e_private = 0;
 452         attrp = &ent->e_attrs;
 453
 454         while ( ber_scanf( &ber, "{m", &a ) != LBER_ERROR ) {
 455                 ldap_back_map(&li->at_map, &a, &mapped, BACKLDAP_REMAP);
 456                 if (mapped.bv_val == NULL || mapped.bv_val[0] == '\0')
 457                         continue;
 458                 attr = (Attribute *)ch_malloc( sizeof(Attribute) );
 459                 if (attr == NULL)
 460                         continue;
 461                 attr->a_flags = 0;
 462                 attr->a_next = 0;
 463                 attr->a_desc = NULL;
 464                 if (slap_bv2ad(&mapped, &attr->a_desc, &text) != LDAP_SUCCESS) {
 465                         if (slap_bv2undef_ad(&mapped, &attr->a_desc, &text)
 466                                         != LDAP_SUCCESS) {
 467 #ifdef NEW_LOGGING
 468                                 LDAP_LOG( BACK_LDAP, DETAIL1,
 469                                         "slap_bv2undef_ad(%s):  %s\n", mapped.bv_val, text, 0 );
 470 #else /* !NEW_LOGGING */
 471                                 Debug( LDAP_DEBUG_ANY,
 472                                                 "slap_bv2undef_ad(%s):  "
 473                                                 "%s\n%s", mapped.bv_val, text, "" );
 474 #endif /* !NEW_LOGGING */
 475                                 ch_free(attr);
 476                                 continue;
 477                         }
 478                 }
 479
 480                 /* no subschemaSubentry */
 481                 if ( attr->a_desc == slap_schema.si_ad_subschemaSubentry ) {
 482                         BerVarray       vals;
 483
 484                         /*
 485                          * We eat target's subschemaSubentry because
 486                          * a search for this value is likely not
 487                          * to resolve to the appropriate backend;
 488                          * later, the local subschemaSubentry is
 489                          * added.
 490                          */
 491                         ( void )ber_scanf( &ber, "[W]", &vals );
 492                         for ( bv = vals; bv->bv_val; bv++ ) {
 493                                 LBER_FREE( bv->bv_val );
 494                         }
 495                         LBER_FREE( vals );
 496
 497                         ch_free(attr);
 498                         continue;
 499                 }
 500
 501                 if ( ber_scanf( &ber, "[W]", &attr->a_vals ) == LBER_ERROR
 502                                 || attr->a_vals == NULL ) {
 503                         /*
 504                          * Note: attr->a_vals can be null when using
 505                          * values result filter
 506                          */
 507                         if (private) {
 508                                 attr->a_vals = &dummy;
 509                         } else {
 510                                 attr->a_vals = ch_malloc(sizeof(struct berval));
 511                                 attr->a_vals->bv_val = NULL;
 512                                 attr->a_vals->bv_len = 0;
 513                         }
 514                         last = 0;
 515                 } else {
 516                         for ( last = 0; attr->a_vals[last].bv_val; last++ );
 517                 }
 518                 if ( last == 0 ) {
 519                         /* empty */
 520                 } else if ( attr->a_desc == slap_schema.si_ad_objectClass
 521                                 || attr->a_desc == slap_schema.si_ad_structuralObjectClass ) {
 522                         for ( bv = attr->a_vals; bv->bv_val; bv++ ) {
 523                                 ldap_back_map(&li->oc_map, bv, &mapped,
 524                                                 BACKLDAP_REMAP);
 525                                 if (mapped.bv_val == NULL || mapped.bv_val[0] == '\0') {
 526                                         LBER_FREE(bv->bv_val);
 527                                         bv->bv_val = NULL;
 528                                         if (--last < 0)
 529                                                 break;
 530                                         *bv = attr->a_vals[last];
 531                                         attr->a_vals[last].bv_val = NULL;
 532                                         bv--;
 533
 534                                 } else if ( mapped.bv_val != bv->bv_val ) {
 535                                         /*
 536                                          * FIXME: after LBER_FREEing
 537                                          * the value is replaced by
 538                                          * ch_alloc'ed memory
 539                                          */
 540                                         LBER_FREE(bv->bv_val);
 541                                         ber_dupbv( bv, &mapped );
 542                                 }
 543                         }
 544
 545                 /*
 546                  * It is necessary to try to rewrite attributes with
 547                  * dn syntax because they might be used in ACLs as
 548                  * members of groups; since ACLs are applied to the
 549                  * rewritten stuff, no dn-based subject clause could
 550                  * be used at the ldap backend side (see
 551                  * http://www.OpenLDAP.org/faq/data/cache/452.html)
 552                  * The problem can be overcome by moving the dn-based
 553                  * ACLs to the target directory server, and letting
 554                  * everything pass thru the ldap backend.
 555                  */
 556                 } else if ( strcmp( attr->a_desc->ad_type->sat_syntax->ssyn_oid,
 557                                         SLAPD_DN_SYNTAX ) == 0 ) {
 558                         for ( bv = attr->a_vals; bv->bv_val; bv++ ) {
 559                                 struct berval   newval;
 560
 561 #ifdef ENABLE_REWRITE
 562                                 switch ( rewrite_session( li->rwinfo,
 563                                                         "searchResult",
 564                                                         bv->bv_val,
 565                                                         op->o_conn,
 566                                                         &newval.bv_val )) {
 567                                 case REWRITE_REGEXEC_OK:
 568                                         /* left as is */
 569                                         if ( newval.bv_val == NULL ) {
 570                                                 break;
 571                                         }
 572                                         newval.bv_len = strlen( newval.bv_val );
 573 #ifdef NEW_LOGGING
 574                                         LDAP_LOG( BACK_LDAP, DETAIL1,
 575                                                 "[rw] searchResult on attr=%s: \"%s\" -> \"%s\"\n",
 576                                                 attr->a_desc->ad_type->sat_cname.bv_val,
 577                                                 bv->bv_val, newval.bv_val );
 578 #else /* !NEW_LOGGING */
 579                                         Debug( LDAP_DEBUG_ARGS,
 580                 "rw> searchResult on attr=%s: \"%s\" -> \"%s\"\n",
 581                                                 attr->a_desc->ad_type->sat_cname.bv_val,
 582                                                 bv->bv_val, newval.bv_val );
 583 #endif /* !NEW_LOGGING */
 584                                         free( bv->bv_val );
 585                                         *bv = newval;
 586                                         break;
 587
 588                                 case REWRITE_REGEXEC_UNWILLING:
 589                                         LBER_FREE(bv->bv_val);
 590                                         bv->bv_val = NULL;
 591                                         if (--last < 0)
 592                                                 goto next_attr;
 593                                         *bv = attr->a_vals[last];
 594                                         attr->a_vals[last].bv_val = NULL;
 595                                         bv--;
 596                                         break;
 597
 598                                 case REWRITE_REGEXEC_ERR:
 599                                         /*
 600                                          * FIXME: better give up,
 601                                          * skip the attribute
 602                                          * or leave it untouched?
 603                                          */
 604                                         break;
 605                                 }
 606 #else /* !ENABLE_REWRITE */
 607                                 ldap_back_dn_massage( li, bv, &newval, 0, 0 );
 608                                 if ( bv->bv_val != newval.bv_val ) {
 609                                         LBER_FREE( bv->bv_val );
 610                                 }
 611                                 *bv = newval;
 612 #endif /* !ENABLE_REWRITE */
 613                         }
 614                 }
 615
 616 next_attr:;
 617
 618 #ifdef SLAP_NVALUES
 619                 if ( last && attr->a_desc->ad_type->sat_equality &&
 620                         attr->a_desc->ad_type->sat_equality->smr_normalize ) {
 621                         int i;
 622
 623                         attr->a_nvals = ch_malloc((last+1)*sizeof(struct berval));
 624                         for (i=0; i<last; i++) {
 625                                 attr->a_desc->ad_type->sat_equality->smr_normalize(
 626                                         SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
 627                                         attr->a_desc->ad_type->sat_syntax,
 628                                         attr->a_desc->ad_type->sat_equality,
 629                                         &attr->a_vals[i], &attr->a_nvals[i] );
 630                         }
 631                         attr->a_nvals[i].bv_val = NULL;
 632                         attr->a_nvals[i].bv_len = 0;
 633                 } else {
 634                         attr->a_nvals = attr->a_vals;
 635                 }
 636 #endif
 637                 *attrp = attr;
 638                 attrp = &attr->a_next;
 639         }
 640         /* make sure it's free'able */
 641         if (!private && ent->e_name.bv_val == bdn->bv_val)
 642                 ber_dupbv( &ent->e_name, bdn );
 643         return LDAP_SUCCESS;
 644 }
 645
 646 /* return 0 IFF we can retrieve the entry with ndn
 647  */
 648 int
 649 ldap_back_entry_get(
 650         Operation *op,
 651         struct berval   *ndn,
 652         ObjectClass *oc,
 653         AttributeDescription *at,
 654         int rw,
 655         Entry **ent
 656 )
 657 {
 658         struct ldapinfo *li = (struct ldapinfo *) op->o_bd->be_private;
 659         struct ldapconn *lc;
 660         int rc = 1, is_oc;
 661         struct berval mapped = { 0, NULL }, bdn, mdn;
 662         LDAPMessage     *result = NULL, *e = NULL;
 663         char *gattr[3];
 664         char *filter;
 665         Connection *oconn;
 666         SlapReply rs;
 667
 668         /* Tell getconn this is a privileged op */
 669         is_oc = op->o_do_not_cache;
 670         op->o_do_not_cache = 1;
 671         lc = ldap_back_getconn(op, &rs);
 672         oconn = op->o_conn;
 673         op->o_conn = NULL;
 674         if ( !lc || !ldap_back_dobind(lc, op, &rs) ) {
 675                 op->o_do_not_cache = is_oc;
 676                 op->o_conn = oconn;
 677                 return 1;
 678         }
 679         op->o_do_not_cache = is_oc;
 680         op->o_conn = oconn;
 681
 682         /*
 683          * Rewrite the search base, if required
 684          */
 685 #ifdef ENABLE_REWRITE
 686         switch ( rewrite_session( li->rwinfo, "searchBase",
 687                                 ndn->bv_val, op->o_conn, &mdn.bv_val ) ) {
 688         case REWRITE_REGEXEC_OK:
 689                 if ( mdn.bv_val == NULL ) {
 690                         mdn = *ndn;
 691                 } else {
 692                         mdn.bv_len = strlen( mdn.bv_val );
 693                 }
 694
 695 #ifdef NEW_LOGGING
 696                 LDAP_LOG( BACK_LDAP, DETAIL1,
 697                         "[rw] searchBase: \"%s\" -> \"%s\"\n",
 698                         ndn->bv_val, mdn.bv_val, 0 );
 699 #else /* !NEW_LOGGING */
 700                 Debug( LDAP_DEBUG_ARGS, "rw> searchBase: \"%s\" -> \"%s\"\n",
 701                                 ndn->bv_val, mdn.bv_val, 0 );
 702 #endif /* !NEW_LOGGING */
 703                 break;
 704
 705         case REWRITE_REGEXEC_UNWILLING:
 706         case REWRITE_REGEXEC_ERR:
 707                 return 1;
 708         }
 709
 710 #else /* !ENABLE_REWRITE */
 711         ldap_back_dn_massage( li, ndn, &mdn, 0, 1 );
 712 #endif /* !ENABLE_REWRITE */
 713
 714         ldap_back_map(&li->at_map, &at->ad_cname, &mapped, BACKLDAP_MAP);
 715         if (mapped.bv_val == NULL || mapped.bv_val[0] == '\0') {
 716                 return 1;
 717         }
 718
 719         is_oc = (strcasecmp("objectclass", mapped.bv_val) == 0);
 720         if (oc && !is_oc) {
 721                 gattr[0] = "objectclass";
 722                 gattr[1] = mapped.bv_val;
 723                 gattr[2] = NULL;
 724         } else {
 725                 gattr[0] = mapped.bv_val;
 726                 gattr[1] = NULL;
 727         }
 728         if (oc) {
 729                 char *ptr;
 730                 ldap_back_map(&li->oc_map, &oc->soc_cname, &mapped,
 731                                                 BACKLDAP_MAP);
 732                 filter = ch_malloc(sizeof("(objectclass=)") + mapped.bv_len);
 733                 ptr = lutil_strcopy(filter, "(objectclass=");
 734                 ptr = lutil_strcopy(ptr, mapped.bv_val);
 735                 *ptr++ = ')';
 736                 *ptr++ = '\0';
 737         } else {
 738                 filter = "(objectclass=*)";
 739         }
 740
 741         if (ldap_search_ext_s(lc->ld, mdn.bv_val, LDAP_SCOPE_BASE, filter,
 742                                 gattr, 0, NULL, NULL, LDAP_NO_LIMIT,
 743                                 LDAP_NO_LIMIT, &result) != LDAP_SUCCESS)
 744         {
 745                 goto cleanup;
 746         }
 747
 748         if ((e = ldap_first_entry(lc->ld, result)) == NULL) {
 749                 goto cleanup;
 750         }
 751
 752         *ent = ch_calloc(1,sizeof(Entry));
 753
 754         rc = ldap_build_entry(op, e, *ent, &bdn, 0);
 755
 756         if (rc != LDAP_SUCCESS) {
 757                 ch_free(*ent);
 758                 *ent = NULL;
 759         }
 760
 761 cleanup:
 762         if (result) {
 763                 ldap_msgfree(result);
 764         }
 765
 766         if ( mdn.bv_val != ndn->bv_val ) {
 767                 ch_free( mdn.bv_val );
 768         }
 769
 770         return(rc);
 771 }
 772