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