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

   1 /* search.c - ldap backend search function */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1999-2006 The OpenLDAP Foundation.
   6  * Portions Copyright 1999-2003 Howard Chu.
   7  * Portions Copyright 2000-2003 Pierangelo Masarati.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted only as authorized by the OpenLDAP
  12  * Public License.
  13  *
  14  * A copy of this license is available in the file LICENSE in the
  15  * top-level directory of the distribution or, alternatively, at
  16  * <http://www.OpenLDAP.org/license.html>.
  17  */
  18 /* ACKNOWLEDGEMENTS:
  19  * This work was initially developed by the Howard Chu for inclusion
  20  * in OpenLDAP Software and subsequently enhanced by Pierangelo
  21  * Masarati.
  22  */
  23
  24 #include "portable.h"
  25
  26 #include <stdio.h>
  27
  28 #include <ac/socket.h>
  29 #include <ac/string.h>
  30 #include <ac/time.h>
  31
  32 #include "slap.h"
  33 #include "back-ldap.h"
  34 #undef ldap_debug       /* silence a warning in ldap-int.h */
  35 #include "../../../libraries/libldap/ldap-int.h"
  36
  37 #include "lutil.h"
  38
  39 static int
  40 ldap_build_entry( Operation *op, LDAPMessage *e, Entry *ent,
  41          struct berval *bdn );
  42
  43 /*
  44  * Quick'n'dirty rewrite of filter in case of error, to deal with
  45  * <draft-zeilenga-ldap-t-f>.
  46  */
  47 static int
  48 ldap_back_munge_filter(
  49         Operation       *op,
  50         struct berval   *filter )
  51 {
  52         ldapinfo_t      *li = (ldapinfo_t *) op->o_bd->be_private;
  53
  54         char            *ptr;
  55         int             gotit = 0;
  56
  57         Debug( LDAP_DEBUG_ARGS, "=> ldap_back_munge_filter \"%s\"\n",
  58                         filter->bv_val, 0, 0 );
  59
  60         for ( ptr = strstr( filter->bv_val, "(?=" );
  61                         ptr;
  62                         ptr = strstr( ptr, "(?=" ) )
  63         {
  64                 static struct berval
  65                         bv_true = BER_BVC( "(?=true)" ),
  66                         bv_false = BER_BVC( "(?=false)" ),
  67                         bv_undefined = BER_BVC( "(?=undefined)" ),
  68                         bv_t = BER_BVC( "(&)" ),
  69                         bv_f = BER_BVC( "(|)" ),
  70                         bv_T = BER_BVC( "(objectClass=*)" ),
  71                         bv_F = BER_BVC( "(!(objectClass=*))" );
  72                 struct berval   *oldbv = NULL,
  73                                 *newbv = NULL,
  74                                 oldfilter = BER_BVNULL;
  75
  76                 if ( strncmp( ptr, bv_true.bv_val, bv_true.bv_len ) == 0 ) {
  77                         oldbv = &bv_true;
  78                         if ( LDAP_BACK_T_F( li ) ) {
  79                                 newbv = &bv_t;
  80
  81                         } else {
  82                                 newbv = &bv_T;
  83                         }
  84
  85                 } else if ( strncmp( ptr, bv_false.bv_val, bv_false.bv_len ) == 0 )
  86                 {
  87                         oldbv = &bv_false;
  88                         if ( LDAP_BACK_T_F( li ) ) {
  89                                 newbv = &bv_f;
  90
  91                         } else {
  92                                 newbv = &bv_F;
  93                         }
  94
  95                 } else if ( strncmp( ptr, bv_undefined.bv_val, bv_undefined.bv_len ) == 0 )
  96                 {
  97                         oldbv = &bv_undefined;
  98                         newbv = &bv_F;
  99
 100                 } else {
 101                         gotit = 0;
 102                         goto done;
 103                 }
 104
 105                 oldfilter = *filter;
 106                 if ( newbv->bv_len > oldbv->bv_len ) {
 107                         filter->bv_len += newbv->bv_len - oldbv->bv_len;
 108                         if ( filter->bv_val == op->ors_filterstr.bv_val ) {
 109                                 filter->bv_val = op->o_tmpalloc( filter->bv_len + 1,
 110                                                 op->o_tmpmemctx );
 111
 112                                 AC_MEMCPY( filter->bv_val, op->ors_filterstr.bv_val,
 113                                                 op->ors_filterstr.bv_len + 1 );
 114
 115                         } else {
 116                                 filter->bv_val = op->o_tmprealloc( filter->bv_val,
 117                                                 filter->bv_len + 1, op->o_tmpmemctx );
 118                         }
 119
 120                         ptr = filter->bv_val + ( ptr - oldfilter.bv_val );
 121                 }
 122
 123                 AC_MEMCPY( &ptr[ newbv->bv_len ],
 124                                 &ptr[ oldbv->bv_len ],
 125                                 oldfilter.bv_len - ( ptr - filter->bv_val ) - oldbv->bv_len + 1 );
 126                 AC_MEMCPY( ptr, newbv->bv_val, newbv->bv_len );
 127
 128                 ptr += newbv->bv_len;
 129                 gotit = 1;
 130         }
 131
 132 done:;
 133         Debug( LDAP_DEBUG_ARGS, "<= ldap_back_munge_filter \"%s\" (%d)\n",
 134                         filter->bv_val, gotit, 0 );
 135
 136         return gotit;
 137 }
 138
 139 int
 140 ldap_back_search(
 141                 Operation       *op,
 142                 SlapReply       *rs )
 143 {
 144         ldapinfo_t      *li = (ldapinfo_t *) op->o_bd->be_private;
 145
 146         ldapconn_t      *lc;
 147         struct timeval  tv;
 148         time_t          stoptime = (time_t)(-1);
 149         LDAPMessage     *res,
 150                         *e;
 151         int             rc = 0,
 152                         msgid;
 153         struct berval   match = BER_BVNULL,
 154                         filter = BER_BVNULL;
 155         int             i;
 156         char            **attrs = NULL;
 157         int             freetext = 0;
 158         int             do_retry = 1, dont_retry = 0;
 159         LDAPControl     **ctrls = NULL;
 160         /* FIXME: shouldn't this be null? */
 161         const char      *save_matched = rs->sr_matched;
 162
 163         lc = ldap_back_getconn( op, rs, LDAP_BACK_SENDERR );
 164         if ( !lc || !ldap_back_dobind( lc, op, rs, LDAP_BACK_SENDERR ) ) {
 165                 return rs->sr_err;
 166         }
 167
 168         /*
 169          * FIXME: in case of values return filter, we might want
 170          * to map attrs and maybe rewrite value
 171          */
 172
 173         /* should we check return values? */
 174         if ( op->ors_deref != -1 ) {
 175                 ldap_set_option( lc->lc_ld, LDAP_OPT_DEREF,
 176                                 (void *)&op->ors_deref );
 177         }
 178
 179         if ( op->ors_tlimit != SLAP_NO_LIMIT ) {
 180                 tv.tv_sec = op->ors_tlimit;
 181                 tv.tv_usec = 0;
 182                 stoptime = op->o_time + op->ors_tlimit;
 183
 184         } else {
 185                 LDAP_BACK_TV_SET( &tv );
 186         }
 187
 188         if ( op->ors_attrs ) {
 189                 for ( i = 0; !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++ )
 190                         /* just count attrs */ ;
 191
 192                 attrs = ch_malloc( ( i + 1 )*sizeof( char * ) );
 193                 if ( attrs == NULL ) {
 194                         rs->sr_err = LDAP_NO_MEMORY;
 195                         rc = -1;
 196                         goto finish;
 197                 }
 198
 199                 for ( i = 0; !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++ ) {
 200                         attrs[ i ] = op->ors_attrs[i].an_name.bv_val;
 201                 }
 202                 attrs[ i ] = NULL;
 203         }
 204
 205         ctrls = op->o_ctrls;
 206         rc = ldap_back_proxy_authz_ctrl( &lc->lc_bound_ndn,
 207                 li->li_version, &li->li_idassert, op, rs, &ctrls );
 208         if ( rc != LDAP_SUCCESS ) {
 209                 goto finish;
 210         }
 211
 212         /* deal with <draft-zeilenga-ldap-t-f> filters */
 213         filter = op->ors_filterstr;
 214 retry:
 215         rs->sr_err = ldap_search_ext( lc->lc_ld, op->o_req_dn.bv_val,
 216                         op->ors_scope, filter.bv_val,
 217                         attrs, op->ors_attrsonly, ctrls, NULL,
 218                         tv.tv_sec ? &tv : NULL,
 219                         op->ors_slimit, &msgid );
 220
 221         if ( rs->sr_err != LDAP_SUCCESS ) {
 222                 switch ( rs->sr_err ) {
 223                 case LDAP_SERVER_DOWN:
 224                         if ( do_retry ) {
 225                                 do_retry = 0;
 226                                 if ( ldap_back_retry( &lc, op, rs, LDAP_BACK_DONTSEND ) ) {
 227                                         goto retry;
 228                                 }
 229                         }
 230
 231                         if ( lc == NULL ) {
 232                                 /* reset by ldap_back_retry ... */
 233                                 rs->sr_err = slap_map_api2result( rs );
 234
 235                         } else {
 236                                 rc = ldap_back_op_result( lc, op, rs, msgid, 0, LDAP_BACK_DONTSEND );
 237                         }
 238
 239                         goto finish;
 240
 241                 case LDAP_FILTER_ERROR:
 242                         if ( ldap_back_munge_filter( op, &filter ) ) {
 243                                 goto retry;
 244                         }
 245
 246                         /* invalid filters return success with no data */
 247                         rs->sr_err = LDAP_SUCCESS;
 248                         rs->sr_text = NULL;
 249                         goto finish;
 250
 251                 default:
 252                         rs->sr_err = slap_map_api2result( rs );
 253                         rs->sr_text = NULL;
 254                         goto finish;
 255                 }
 256         }
 257
 258         /* We pull apart the ber result, stuff it into a slapd entry, and
 259          * let send_search_entry stuff it back into ber format. Slow & ugly,
 260          * but this is necessary for version matching, and for ACL processing.
 261          */
 262
 263         for ( rc = 0; rc != -1; rc = ldap_result( lc->lc_ld, msgid, LDAP_MSG_ONE, &tv, &res ) )
 264         {
 265                 /* check for abandon */
 266                 if ( op->o_abandon ) {
 267                         if ( rc > 0 ) {
 268                                 ldap_msgfree( res );
 269                         }
 270                         (void)ldap_back_cancel( lc, op, rs, msgid, LDAP_BACK_DONTSEND );
 271                         rc = SLAPD_ABANDON;
 272                         goto finish;
 273                 }
 274
 275                 if ( rc == 0 ) {
 276                         LDAP_BACK_TV_SET( &tv );
 277                         ldap_pvt_thread_yield();
 278
 279                         /* check time limit */
 280                         if ( op->ors_tlimit != SLAP_NO_LIMIT
 281                                         && slap_get_time() > stoptime )
 282                         {
 283                                 (void)ldap_back_cancel( lc, op, rs, msgid, LDAP_BACK_DONTSEND );
 284                                 rc = rs->sr_err = LDAP_TIMELIMIT_EXCEEDED;
 285                                 goto finish;
 286                         }
 287                         continue;
 288
 289                 } else {
 290                         /* only touch when activity actually took place... */
 291                         if ( li->li_idle_timeout && lc ) {
 292                                 lc->lc_time = op->o_time;
 293                         }
 294
 295                         /* don't retry any more */
 296                         dont_retry = 1;
 297                 }
 298
 299
 300                 if ( rc == LDAP_RES_SEARCH_ENTRY ) {
 301                         Entry           ent = { 0 };
 302                         struct berval   bdn = BER_BVNULL;
 303
 304                         do_retry = 0;
 305
 306                         e = ldap_first_entry( lc->lc_ld, res );
 307                         rc = ldap_build_entry( op, e, &ent, &bdn );
 308                         if ( rc == LDAP_SUCCESS ) {
 309                                 rs->sr_entry = &ent;
 310                                 rs->sr_attrs = op->ors_attrs;
 311                                 rs->sr_operational_attrs = NULL;
 312                                 rs->sr_flags = 0;
 313                                 rs->sr_err = LDAP_SUCCESS;
 314                                 rc = rs->sr_err = send_search_entry( op, rs );
 315                                 if ( !BER_BVISNULL( &ent.e_name ) ) {
 316                                         assert( ent.e_name.bv_val != bdn.bv_val );
 317                                         op->o_tmpfree( ent.e_name.bv_val, op->o_tmpmemctx );
 318                                         BER_BVZERO( &ent.e_name );
 319                                 }
 320                                 if ( !BER_BVISNULL( &ent.e_nname ) ) {
 321                                         op->o_tmpfree( ent.e_nname.bv_val, op->o_tmpmemctx );
 322                                         BER_BVZERO( &ent.e_nname );
 323                                 }
 324                                 entry_clean( &ent );
 325                         }
 326                         ldap_msgfree( res );
 327                         if ( rc != LDAP_SUCCESS ) {
 328                                 if ( rc == LDAP_UNAVAILABLE ) {
 329                                         rc = rs->sr_err = LDAP_OTHER;
 330                                 } else {
 331                                         (void)ldap_back_cancel( lc, op, rs, msgid, LDAP_BACK_DONTSEND );
 332                                 }
 333                                 goto finish;
 334                         }
 335
 336                 } else if ( rc == LDAP_RES_SEARCH_REFERENCE ) {
 337                         char            **references = NULL;
 338
 339                         do_retry = 0;
 340                         rc = ldap_parse_reference( lc->lc_ld, res,
 341                                         &references, &rs->sr_ctrls, 1 );
 342
 343                         if ( rc != LDAP_SUCCESS ) {
 344                                 continue;
 345                         }
 346
 347                         /* FIXME: there MUST be at least one */
 348                         if ( references && references[ 0 ] && references[ 0 ][ 0 ] ) {
 349                                 int             cnt;
 350
 351                                 for ( cnt = 0; references[ cnt ]; cnt++ )
 352                                         /* NO OP */ ;
 353
 354                                 /* FIXME: there MUST be at least one */
 355                                 rs->sr_ref = op->o_tmpalloc( ( cnt + 1 ) * sizeof( struct berval ),
 356                                         op->o_tmpmemctx );
 357
 358                                 for ( cnt = 0; references[ cnt ]; cnt++ ) {
 359                                         ber_str2bv( references[ cnt ], 0, 0, &rs->sr_ref[ cnt ] );
 360                                 }
 361                                 BER_BVZERO( &rs->sr_ref[ cnt ] );
 362
 363                                 /* ignore return value by now */
 364                                 ( void )send_search_reference( op, rs );
 365
 366                         } else {
 367                                 Debug( LDAP_DEBUG_ANY,
 368                                         "%s ldap_back_search: "
 369                                         "got SEARCH_REFERENCE "
 370                                         "with no referrals\n",
 371                                         op->o_log_prefix, 0, 0 );
 372                         }
 373
 374                         /* cleanup */
 375                         if ( references ) {
 376                                 ber_memvfree( (void **)references );
 377                                 op->o_tmpfree( rs->sr_ref, op->o_tmpmemctx );
 378                                 rs->sr_ref = NULL;
 379                         }
 380
 381                         if ( rs->sr_ctrls ) {
 382                                 ldap_controls_free( rs->sr_ctrls );
 383                                 rs->sr_ctrls = NULL;
 384                         }
 385
 386                 } else {
 387                         char            **references = NULL, *err = NULL;
 388
 389                         rc = ldap_parse_result( lc->lc_ld, res, &rs->sr_err,
 390                                         &match.bv_val, &err,
 391                                         &references, &rs->sr_ctrls, 1 );
 392                         if ( rc != LDAP_SUCCESS ) {
 393                                 rs->sr_err = rc;
 394                         }
 395                         rs->sr_err = slap_map_api2result( rs );
 396                         if ( err ) {
 397                                 rs->sr_text = err;
 398                                 freetext = 1;
 399                         }
 400
 401                         if ( references && references[ 0 ] && references[ 0 ][ 0 ] ) {
 402                                 int     cnt;
 403
 404                                 if ( rs->sr_err != LDAP_REFERRAL ) {
 405                                         /* FIXME: error */
 406                                         Debug( LDAP_DEBUG_ANY,
 407                                                 "%s ldap_back_search: "
 408                                                 "got referrals with %d\n",
 409                                                 op->o_log_prefix,
 410                                                 rs->sr_err, 0 );
 411                                         rs->sr_err = LDAP_REFERRAL;
 412                                 }
 413
 414                                 for ( cnt = 0; references[ cnt ]; cnt++ )
 415                                         /* NO OP */ ;
 416
 417                                 rs->sr_ref = op->o_tmpalloc( ( cnt + 1 ) * sizeof( struct berval ),
 418                                         op->o_tmpmemctx );
 419
 420                                 for ( cnt = 0; references[ cnt ]; cnt++ ) {
 421                                         /* duplicating ...*/
 422                                         ber_str2bv( references[ cnt ], 0, 1, &rs->sr_ref[ cnt ] );
 423                                 }
 424                                 BER_BVZERO( &rs->sr_ref[ cnt ] );
 425                         }
 426
 427                         if ( match.bv_val != NULL ) {
 428                                 match.bv_len = strlen( match.bv_val );
 429                         }
 430
 431                         /* cleanup */
 432                         if ( references ) {
 433                                 ber_memvfree( (void **)references );
 434                         }
 435
 436                         rc = 0;
 437                         break;
 438                 }
 439         }
 440
 441         if ( rc == -1 && dont_retry == 0 ) {
 442                 if ( do_retry ) {
 443                         do_retry = 0;
 444                         if ( ldap_back_retry( &lc, op, rs, LDAP_BACK_DONTSEND ) ) {
 445                                 goto retry;
 446                         }
 447                 }
 448                 rs->sr_err = LDAP_SERVER_DOWN;
 449                 rs->sr_err = slap_map_api2result( rs );
 450                 goto finish;
 451         }
 452
 453         /*
 454          * Rewrite the matched portion of the search base, if required
 455          */
 456         if ( !BER_BVISNULL( &match ) && !BER_BVISEMPTY( &match ) ) {
 457                 struct berval   pmatch;
 458
 459                 if ( dnPretty( NULL, &match, &pmatch, op->o_tmpmemctx ) == LDAP_SUCCESS ) {
 460                         rs->sr_matched = pmatch.bv_val;
 461                         LDAP_FREE( match.bv_val );
 462
 463                 } else {
 464                         rs->sr_matched = match.bv_val;
 465                 }
 466         }
 467
 468         if ( rs->sr_v2ref ) {
 469                 rs->sr_err = LDAP_REFERRAL;
 470         }
 471
 472 finish:;
 473         if ( LDAP_BACK_QUARANTINE( li ) ) {
 474                 ldap_back_quarantine( op, rs );
 475         }
 476
 477 #if 0
 478         /* let send_ldap_result play cleanup handlers (ITS#4645) */
 479         if ( rc != SLAPD_ABANDON )
 480 #endif
 481         {
 482                 send_ldap_result( op, rs );
 483         }
 484
 485         (void)ldap_back_proxy_authz_ctrl_free( op, &ctrls );
 486
 487         if ( rs->sr_ctrls ) {
 488                 ldap_controls_free( rs->sr_ctrls );
 489                 rs->sr_ctrls = NULL;
 490         }
 491
 492         if ( rs->sr_matched != NULL && rs->sr_matched != save_matched ) {
 493                 if ( rs->sr_matched != match.bv_val ) {
 494                         ber_memfree_x( (char *)rs->sr_matched, op->o_tmpmemctx );
 495
 496                 } else {
 497                         LDAP_FREE( match.bv_val );
 498                 }
 499                 rs->sr_matched = save_matched;
 500         }
 501
 502         if ( !BER_BVISNULL( &filter ) && filter.bv_val != op->ors_filterstr.bv_val ) {
 503                 op->o_tmpfree( filter.bv_val, op->o_tmpmemctx );
 504         }
 505
 506         if ( rs->sr_text ) {
 507                 if ( freetext ) {
 508                         LDAP_FREE( (char *)rs->sr_text );
 509                 }
 510                 rs->sr_text = NULL;
 511         }
 512
 513         if ( rs->sr_ref ) {
 514                 ber_bvarray_free_x( rs->sr_ref, op->o_tmpmemctx );
 515                 rs->sr_ref = NULL;
 516         }
 517
 518         if ( attrs ) {
 519                 ch_free( attrs );
 520         }
 521
 522         if ( lc != NULL ) {
 523                 ldap_back_release_conn( op, rs, lc );
 524         }
 525
 526         return rs->sr_err;
 527 }
 528
 529 static int
 530 ldap_build_entry(
 531                 Operation       *op,
 532                 LDAPMessage     *e,
 533                 Entry           *ent,
 534                 struct berval   *bdn )
 535 {
 536         struct berval   a;
 537         BerElement      ber = *e->lm_ber;
 538         Attribute       *attr, **attrp;
 539         const char      *text;
 540         int             last;
 541
 542         /* safe assumptions ... */
 543         assert( ent != NULL );
 544         BER_BVZERO( &ent->e_bv );
 545
 546         if ( ber_scanf( &ber, "{m{", bdn ) == LBER_ERROR ) {
 547                 return LDAP_DECODING_ERROR;
 548         }
 549
 550         /*
 551          * Note: this may fail if the target host(s) schema differs
 552          * from the one known to the meta, and a DN with unknown
 553          * attributes is returned.
 554          *
 555          * FIXME: should we log anything, or delegate to dnNormalize?
 556          */
 557         /* Note: if the distinguished values or the naming attributes
 558          * change, should we massage them as well?
 559          */
 560         if ( dnPrettyNormal( NULL, bdn, &ent->e_name, &ent->e_nname,
 561                 op->o_tmpmemctx ) != LDAP_SUCCESS )
 562         {
 563                 return LDAP_INVALID_DN_SYNTAX;
 564         }
 565
 566         attrp = &ent->e_attrs;
 567
 568         while ( ber_scanf( &ber, "{m", &a ) != LBER_ERROR ) {
 569                 int                             i;
 570                 slap_syntax_validate_func       *validate;
 571                 slap_syntax_transform_func      *pretty;
 572
 573                 attr = attr_alloc( NULL );
 574                 if ( attr == NULL ) {
 575                         continue;
 576                 }
 577                 if ( slap_bv2ad( &a, &attr->a_desc, &text )
 578                                 != LDAP_SUCCESS )
 579                 {
 580                         if ( slap_bv2undef_ad( &a, &attr->a_desc, &text,
 581                                 SLAP_AD_PROXIED ) != LDAP_SUCCESS )
 582                         {
 583                                 Debug( LDAP_DEBUG_ANY,
 584                                         "%s ldap_build_entry: "
 585                                         "slap_bv2undef_ad(%s): %s\n",
 586                                         op->o_log_prefix, a.bv_val, text );
 587                                 attr_free( attr );
 588                                 continue;
 589                         }
 590                 }
 591
 592                 /* no subschemaSubentry */
 593                 if ( attr->a_desc == slap_schema.si_ad_subschemaSubentry
 594                         || attr->a_desc == slap_schema.si_ad_entryDN )
 595                 {
 596
 597                         /*
 598                          * We eat target's subschemaSubentry because
 599                          * a search for this value is likely not
 600                          * to resolve to the appropriate backend;
 601                          * later, the local subschemaSubentry is
 602                          * added.
 603                          *
 604                          * We also eat entryDN because the frontend
 605                          * will reattach it without checking if already
 606                          * present...
 607                          */
 608                         ( void )ber_scanf( &ber, "x" /* [W] */ );
 609
 610                         attr_free( attr );
 611                         continue;
 612                 }
 613
 614                 if ( ber_scanf( &ber, "[W]", &attr->a_vals ) == LBER_ERROR
 615                                 || attr->a_vals == NULL )
 616                 {
 617                         /*
 618                          * Note: attr->a_vals can be null when using
 619                          * values result filter
 620                          */
 621                         attr->a_vals = (struct berval *)&slap_dummy_bv;
 622                         last = 0;
 623
 624                 } else {
 625                         for ( last = 0; !BER_BVISNULL( &attr->a_vals[ last ] ); last++ )
 626                                 /* just count vals */ ;
 627                 }
 628
 629                 validate = attr->a_desc->ad_type->sat_syntax->ssyn_validate;
 630                 pretty = attr->a_desc->ad_type->sat_syntax->ssyn_pretty;
 631
 632                 if ( !validate && !pretty ) {
 633                         attr->a_nvals = NULL;
 634                         attr_free( attr );
 635                         goto next_attr;
 636                 }
 637
 638                 for ( i = 0; i < last; i++ ) {
 639                         struct berval   pval;
 640                         int             rc;
 641
 642                         if ( pretty ) {
 643                                 rc = pretty( attr->a_desc->ad_type->sat_syntax,
 644                                         &attr->a_vals[i], &pval, NULL );
 645
 646                         } else {
 647                                 rc = validate( attr->a_desc->ad_type->sat_syntax,
 648                                         &attr->a_vals[i] );
 649                         }
 650
 651                         if ( rc != LDAP_SUCCESS ) {
 652                                 /* check if, by chance, it's an undefined objectClass */
 653                                 if ( attr->a_desc == slap_schema.si_ad_objectClass &&
 654                                                 oc_bvfind_undef( &attr->a_vals[i] ) != NULL )
 655                                 {
 656                                         ber_dupbv( &pval, &attr->a_vals[i] );
 657
 658                                 } else {
 659                                         attr->a_nvals = NULL;
 660                                         attr_free( attr );
 661                                         goto next_attr;
 662                                 }
 663                         }
 664
 665                         if ( pretty ) {
 666                                 LBER_FREE( attr->a_vals[i].bv_val );
 667                                 attr->a_vals[i] = pval;
 668                         }
 669                 }
 670
 671                 if ( last && attr->a_desc->ad_type->sat_equality &&
 672                                 attr->a_desc->ad_type->sat_equality->smr_normalize )
 673                 {
 674                         attr->a_nvals = ch_malloc( ( last + 1 )*sizeof( struct berval ) );
 675                         for ( i = 0; i < last; i++ ) {
 676                                 int             rc;
 677
 678                                 /*
 679                                  * check that each value is valid per syntax
 680                                  * and pretty if appropriate
 681                                  */
 682                                 rc = attr->a_desc->ad_type->sat_equality->smr_normalize(
 683                                         SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
 684                                         attr->a_desc->ad_type->sat_syntax,
 685                                         attr->a_desc->ad_type->sat_equality,
 686                                         &attr->a_vals[i], &attr->a_nvals[i],
 687                                         NULL );
 688
 689                                 if ( rc != LDAP_SUCCESS ) {
 690                                         BER_BVZERO( &attr->a_nvals[i] );
 691                                         attr_free( attr );
 692                                         goto next_attr;
 693                                 }
 694                         }
 695                         BER_BVZERO( &attr->a_nvals[i] );
 696
 697                 } else {
 698                         attr->a_nvals = attr->a_vals;
 699                 }
 700                 *attrp = attr;
 701                 attrp = &attr->a_next;
 702
 703 next_attr:;
 704         }
 705
 706         return LDAP_SUCCESS;
 707 }
 708
 709 /* return 0 IFF we can retrieve the entry with ndn
 710  */
 711 int
 712 ldap_back_entry_get(
 713                 Operation               *op,
 714                 struct berval           *ndn,
 715                 ObjectClass             *oc,
 716                 AttributeDescription    *at,
 717                 int                     rw,
 718                 Entry                   **ent )
 719 {
 720         ldapinfo_t      *li = (ldapinfo_t *) op->o_bd->be_private;
 721
 722         ldapconn_t      *lc;
 723         int             rc = 1,
 724                         do_not_cache;
 725         struct berval   bdn;
 726         LDAPMessage     *result = NULL,
 727                         *e = NULL;
 728         char            *attr[3], **attrp = NULL;
 729         char            *filter = NULL;
 730         SlapReply       rs;
 731         int             do_retry = 1;
 732         LDAPControl     **ctrls = NULL;
 733
 734         *ent = NULL;
 735
 736         /* Tell getconn this is a privileged op */
 737         do_not_cache = op->o_do_not_cache;
 738         op->o_do_not_cache = 1;
 739         lc = ldap_back_getconn( op, &rs, LDAP_BACK_DONTSEND );
 740         if ( !lc || !ldap_back_dobind( lc, op, &rs, LDAP_BACK_DONTSEND ) ) {
 741                 op->o_do_not_cache = do_not_cache;
 742                 return rs.sr_err;
 743         }
 744         op->o_do_not_cache = do_not_cache;
 745
 746         if ( at ) {
 747                 attrp = attr;
 748                 if ( oc && at != slap_schema.si_ad_objectClass ) {
 749                         attr[0] = slap_schema.si_ad_objectClass->ad_cname.bv_val;
 750                         attr[1] = at->ad_cname.bv_val;
 751                         attr[2] = NULL;
 752
 753                 } else {
 754                         attr[0] = at->ad_cname.bv_val;
 755                         attr[1] = NULL;
 756                 }
 757         }
 758
 759         if ( oc ) {
 760                 char    *ptr;
 761
 762                 filter = ch_malloc( STRLENOF( "(objectclass=)" )
 763                                 + oc->soc_cname.bv_len + 1 );
 764                 ptr = lutil_strcopy( filter, "(objectclass=" );
 765                 ptr = lutil_strcopy( ptr, oc->soc_cname.bv_val );
 766                 *ptr++ = ')';
 767                 *ptr++ = '\0';
 768         }
 769
 770         ctrls = op->o_ctrls;
 771         rc = ldap_back_proxy_authz_ctrl( &lc->lc_bound_ndn,
 772                 li->li_version, &li->li_idassert, op, &rs, &ctrls );
 773         if ( rc != LDAP_SUCCESS ) {
 774                 goto cleanup;
 775         }
 776
 777 retry:
 778         rc = ldap_search_ext_s( lc->lc_ld, ndn->bv_val, LDAP_SCOPE_BASE, filter,
 779                                 attrp, 0, ctrls, NULL,
 780                                 NULL, LDAP_NO_LIMIT, &result );
 781         if ( rc != LDAP_SUCCESS ) {
 782                 if ( rc == LDAP_SERVER_DOWN && do_retry ) {
 783                         do_retry = 0;
 784                         if ( ldap_back_retry( &lc, op, &rs, LDAP_BACK_DONTSEND ) ) {
 785                                 goto retry;
 786                         }
 787                 }
 788                 goto cleanup;
 789         }
 790
 791         e = ldap_first_entry( lc->lc_ld, result );
 792         if ( e == NULL ) {
 793                 /* the entry exists, but it doesn't match the filter? */
 794                 goto cleanup;
 795         }
 796
 797         *ent = entry_alloc();
 798         if ( *ent == NULL ) {
 799                 rc = LDAP_NO_MEMORY;
 800                 goto cleanup;
 801         }
 802
 803         rc = ldap_build_entry( op, e, *ent, &bdn );
 804
 805         if ( rc != LDAP_SUCCESS ) {
 806                 ch_free( *ent );
 807                 *ent = NULL;
 808         }
 809
 810 cleanup:
 811         (void)ldap_back_proxy_authz_ctrl_free( op, &ctrls );
 812
 813         if ( result ) {
 814                 ldap_msgfree( result );
 815         }
 816
 817         if ( filter ) {
 818                 ch_free( filter );
 819         }
 820
 821         if ( lc != NULL ) {
 822                 ldap_back_release_conn( op, &rs, lc );
 823         }
 824
 825         return rc;
 826 }
 827