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 = NULL;
 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         if ( !ldap_back_dobind( &lc, op, rs, LDAP_BACK_SENDERR ) ) {
 164                 return rs->sr_err;
 165         }
 166
 167         /*
 168          * FIXME: in case of values return filter, we might want
 169          * to map attrs and maybe rewrite value
 170          */
 171
 172         /* should we check return values? */
 173         if ( op->ors_deref != -1 ) {
 174                 ldap_set_option( lc->lc_ld, LDAP_OPT_DEREF,
 175                                 (void *)&op->ors_deref );
 176         }
 177
 178         if ( op->ors_tlimit != SLAP_NO_LIMIT ) {
 179                 tv.tv_sec = op->ors_tlimit;
 180                 tv.tv_usec = 0;
 181                 stoptime = op->o_time + op->ors_tlimit;
 182
 183         } else {
 184                 LDAP_BACK_TV_SET( &tv );
 185         }
 186
 187         if ( op->ors_attrs ) {
 188                 for ( i = 0; !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++ )
 189                         /* just count attrs */ ;
 190
 191                 attrs = ch_malloc( ( i + 1 )*sizeof( char * ) );
 192                 if ( attrs == NULL ) {
 193                         rs->sr_err = LDAP_NO_MEMORY;
 194                         rc = -1;
 195                         goto finish;
 196                 }
 197
 198                 for ( i = 0; !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++ ) {
 199                         attrs[ i ] = op->ors_attrs[i].an_name.bv_val;
 200                 }
 201                 attrs[ i ] = NULL;
 202         }
 203
 204         ctrls = op->o_ctrls;
 205         rc = ldap_back_proxy_authz_ctrl( &lc->lc_bound_ndn,
 206                 li->li_version, &li->li_idassert, op, rs, &ctrls );
 207         if ( rc != LDAP_SUCCESS ) {
 208                 goto finish;
 209         }
 210
 211         /* deal with <draft-zeilenga-ldap-t-f> filters */
 212         filter = op->ors_filterstr;
 213 retry:
 214         rs->sr_err = ldap_search_ext( lc->lc_ld, op->o_req_dn.bv_val,
 215                         op->ors_scope, filter.bv_val,
 216                         attrs, op->ors_attrsonly, ctrls, NULL,
 217                         tv.tv_sec ? &tv : NULL,
 218                         op->ors_slimit, &msgid );
 219
 220         if ( rs->sr_err != LDAP_SUCCESS ) {
 221                 switch ( rs->sr_err ) {
 222                 case LDAP_SERVER_DOWN:
 223                         if ( do_retry ) {
 224                                 do_retry = 0;
 225                                 if ( ldap_back_retry( &lc, op, rs, LDAP_BACK_DONTSEND ) ) {
 226                                         goto retry;
 227                                 }
 228                         }
 229
 230                         if ( lc == NULL ) {
 231                                 /* reset by ldap_back_retry ... */
 232                                 rs->sr_err = slap_map_api2result( rs );
 233
 234                         } else {
 235                                 rc = ldap_back_op_result( lc, op, rs, msgid, 0, LDAP_BACK_DONTSEND );
 236                         }
 237
 238                         goto finish;
 239
 240                 case LDAP_FILTER_ERROR:
 241                         if ( ldap_back_munge_filter( op, &filter ) ) {
 242                                 goto retry;
 243                         }
 244
 245                         /* invalid filters return success with no data */
 246                         rs->sr_err = LDAP_SUCCESS;
 247                         rs->sr_text = NULL;
 248                         goto finish;
 249
 250                 default:
 251                         rs->sr_err = slap_map_api2result( rs );
 252                         rs->sr_text = NULL;
 253                         goto finish;
 254                 }
 255         }
 256
 257         /* We pull apart the ber result, stuff it into a slapd entry, and
 258          * let send_search_entry stuff it back into ber format. Slow & ugly,
 259          * but this is necessary for version matching, and for ACL processing.
 260          */
 261
 262         for ( rc = 0; rc != -1; rc = ldap_result( lc->lc_ld, msgid, LDAP_MSG_ONE, &tv, &res ) )
 263         {
 264                 /* check for abandon */
 265                 if ( op->o_abandon ) {
 266                         if ( rc > 0 ) {
 267                                 ldap_msgfree( res );
 268                         }
 269                         (void)ldap_back_cancel( lc, op, rs, msgid, LDAP_BACK_DONTSEND );
 270                         rc = SLAPD_ABANDON;
 271                         goto finish;
 272                 }
 273
 274                 if ( rc == 0 ) {
 275                         LDAP_BACK_TV_SET( &tv );
 276                         ldap_pvt_thread_yield();
 277
 278                         /* check time limit */
 279                         if ( op->ors_tlimit != SLAP_NO_LIMIT
 280                                         && slap_get_time() > stoptime )
 281                         {
 282                                 (void)ldap_back_cancel( lc, op, rs, msgid, LDAP_BACK_DONTSEND );
 283                                 rc = rs->sr_err = LDAP_TIMELIMIT_EXCEEDED;
 284                                 goto finish;
 285                         }
 286                         continue;
 287
 288                 } else {
 289                         /* only touch when activity actually took place... */
 290                         if ( li->li_idle_timeout && lc ) {
 291                                 lc->lc_time = op->o_time;
 292                         }
 293
 294                         /* don't retry any more */
 295                         dont_retry = 1;
 296                 }
 297
 298
 299                 if ( rc == LDAP_RES_SEARCH_ENTRY ) {
 300                         Entry           ent = { 0 };
 301                         struct berval   bdn = BER_BVNULL;
 302
 303                         do_retry = 0;
 304
 305                         e = ldap_first_entry( lc->lc_ld, res );
 306                         rc = ldap_build_entry( op, e, &ent, &bdn );
 307                         if ( rc == LDAP_SUCCESS ) {
 308                                 rs->sr_entry = &ent;
 309                                 rs->sr_attrs = op->ors_attrs;
 310                                 rs->sr_operational_attrs = NULL;
 311                                 rs->sr_flags = 0;
 312                                 rs->sr_err = LDAP_SUCCESS;
 313                                 rc = rs->sr_err = send_search_entry( op, rs );
 314                                 if ( !BER_BVISNULL( &ent.e_name ) ) {
 315                                         assert( ent.e_name.bv_val != bdn.bv_val );
 316                                         op->o_tmpfree( ent.e_name.bv_val, op->o_tmpmemctx );
 317                                         BER_BVZERO( &ent.e_name );
 318                                 }
 319                                 if ( !BER_BVISNULL( &ent.e_nname ) ) {
 320                                         op->o_tmpfree( ent.e_nname.bv_val, op->o_tmpmemctx );
 321                                         BER_BVZERO( &ent.e_nname );
 322                                 }
 323                                 entry_clean( &ent );
 324                         }
 325                         ldap_msgfree( res );
 326                         if ( rc != LDAP_SUCCESS ) {
 327                                 if ( rc == LDAP_UNAVAILABLE ) {
 328                                         rc = rs->sr_err = LDAP_OTHER;
 329                                 } else {
 330                                         (void)ldap_back_cancel( lc, op, rs, msgid, LDAP_BACK_DONTSEND );
 331                                 }
 332                                 goto finish;
 333                         }
 334
 335                 } else if ( rc == LDAP_RES_SEARCH_REFERENCE ) {
 336                         char            **references = NULL;
 337
 338                         do_retry = 0;
 339                         rc = ldap_parse_reference( lc->lc_ld, res,
 340                                         &references, &rs->sr_ctrls, 1 );
 341
 342                         if ( rc != LDAP_SUCCESS ) {
 343                                 continue;
 344                         }
 345
 346                         /* FIXME: there MUST be at least one */
 347                         if ( references && references[ 0 ] && references[ 0 ][ 0 ] ) {
 348                                 int             cnt;
 349
 350                                 for ( cnt = 0; references[ cnt ]; cnt++ )
 351                                         /* NO OP */ ;
 352
 353                                 /* FIXME: there MUST be at least one */
 354                                 rs->sr_ref = op->o_tmpalloc( ( cnt + 1 ) * sizeof( struct berval ),
 355                                         op->o_tmpmemctx );
 356
 357                                 for ( cnt = 0; references[ cnt ]; cnt++ ) {
 358                                         ber_str2bv( references[ cnt ], 0, 0, &rs->sr_ref[ cnt ] );
 359                                 }
 360                                 BER_BVZERO( &rs->sr_ref[ cnt ] );
 361
 362                                 /* ignore return value by now */
 363                                 ( void )send_search_reference( op, rs );
 364
 365                         } else {
 366                                 Debug( LDAP_DEBUG_ANY,
 367                                         "%s ldap_back_search: "
 368                                         "got SEARCH_REFERENCE "
 369                                         "with no referrals\n",
 370                                         op->o_log_prefix, 0, 0 );
 371                         }
 372
 373                         /* cleanup */
 374                         if ( references ) {
 375                                 ber_memvfree( (void **)references );
 376                                 op->o_tmpfree( rs->sr_ref, op->o_tmpmemctx );
 377                                 rs->sr_ref = NULL;
 378                         }
 379
 380                         if ( rs->sr_ctrls ) {
 381                                 ldap_controls_free( rs->sr_ctrls );
 382                                 rs->sr_ctrls = NULL;
 383                         }
 384
 385                 } else {
 386                         char            **references = NULL, *err = NULL;
 387
 388                         rc = ldap_parse_result( lc->lc_ld, res, &rs->sr_err,
 389                                         &match.bv_val, &err,
 390                                         &references, &rs->sr_ctrls, 1 );
 391                         if ( rc != LDAP_SUCCESS ) {
 392                                 rs->sr_err = rc;
 393                         }
 394                         rs->sr_err = slap_map_api2result( rs );
 395                         if ( err ) {
 396                                 rs->sr_text = err;
 397                                 freetext = 1;
 398                         }
 399
 400                         if ( references && references[ 0 ] && references[ 0 ][ 0 ] ) {
 401                                 int     cnt;
 402
 403                                 if ( rs->sr_err != LDAP_REFERRAL ) {
 404                                         /* FIXME: error */
 405                                         Debug( LDAP_DEBUG_ANY,
 406                                                 "%s ldap_back_search: "
 407                                                 "got referrals with %d\n",
 408                                                 op->o_log_prefix,
 409                                                 rs->sr_err, 0 );
 410                                         rs->sr_err = LDAP_REFERRAL;
 411                                 }
 412
 413                                 for ( cnt = 0; references[ cnt ]; cnt++ )
 414                                         /* NO OP */ ;
 415
 416                                 rs->sr_ref = op->o_tmpalloc( ( cnt + 1 ) * sizeof( struct berval ),
 417                                         op->o_tmpmemctx );
 418
 419                                 for ( cnt = 0; references[ cnt ]; cnt++ ) {
 420                                         /* duplicating ...*/
 421                                         ber_str2bv( references[ cnt ], 0, 1, &rs->sr_ref[ cnt ] );
 422                                 }
 423                                 BER_BVZERO( &rs->sr_ref[ cnt ] );
 424                         }
 425
 426                         if ( match.bv_val != NULL ) {
 427                                 match.bv_len = strlen( match.bv_val );
 428                         }
 429
 430                         /* cleanup */
 431                         if ( references ) {
 432                                 ber_memvfree( (void **)references );
 433                         }
 434
 435                         rc = 0;
 436                         break;
 437                 }
 438         }
 439
 440         if ( rc == -1 && dont_retry == 0 ) {
 441                 if ( do_retry ) {
 442                         do_retry = 0;
 443                         if ( ldap_back_retry( &lc, op, rs, LDAP_BACK_DONTSEND ) ) {
 444                                 goto retry;
 445                         }
 446                 }
 447                 rs->sr_err = LDAP_SERVER_DOWN;
 448                 rs->sr_err = slap_map_api2result( rs );
 449                 goto finish;
 450         }
 451
 452         /*
 453          * Rewrite the matched portion of the search base, if required
 454          */
 455         if ( !BER_BVISNULL( &match ) && !BER_BVISEMPTY( &match ) ) {
 456                 struct berval   pmatch;
 457
 458                 if ( dnPretty( NULL, &match, &pmatch, op->o_tmpmemctx ) == LDAP_SUCCESS ) {
 459                         rs->sr_matched = pmatch.bv_val;
 460                         LDAP_FREE( match.bv_val );
 461
 462                 } else {
 463                         rs->sr_matched = match.bv_val;
 464                 }
 465         }
 466
 467         if ( rs->sr_v2ref ) {
 468                 rs->sr_err = LDAP_REFERRAL;
 469         }
 470
 471 finish:;
 472         if ( LDAP_BACK_QUARANTINE( li ) ) {
 473                 ldap_back_quarantine( op, rs );
 474         }
 475
 476 #if 0
 477         /* let send_ldap_result play cleanup handlers (ITS#4645) */
 478         if ( rc != SLAPD_ABANDON )
 479 #endif
 480         {
 481                 send_ldap_result( op, rs );
 482         }
 483
 484         (void)ldap_back_proxy_authz_ctrl_free( op, &ctrls );
 485
 486         if ( rs->sr_ctrls ) {
 487                 ldap_controls_free( rs->sr_ctrls );
 488                 rs->sr_ctrls = NULL;
 489         }
 490
 491         if ( rs->sr_matched != NULL && rs->sr_matched != save_matched ) {
 492                 if ( rs->sr_matched != match.bv_val ) {
 493                         ber_memfree_x( (char *)rs->sr_matched, op->o_tmpmemctx );
 494
 495                 } else {
 496                         LDAP_FREE( match.bv_val );
 497                 }
 498                 rs->sr_matched = save_matched;
 499         }
 500
 501         if ( !BER_BVISNULL( &filter ) && filter.bv_val != op->ors_filterstr.bv_val ) {
 502                 op->o_tmpfree( filter.bv_val, op->o_tmpmemctx );
 503         }
 504
 505         if ( rs->sr_text ) {
 506                 if ( freetext ) {
 507                         LDAP_FREE( (char *)rs->sr_text );
 508                 }
 509                 rs->sr_text = NULL;
 510         }
 511
 512         if ( rs->sr_ref ) {
 513                 ber_bvarray_free_x( rs->sr_ref, op->o_tmpmemctx );
 514                 rs->sr_ref = NULL;
 515         }
 516
 517         if ( attrs ) {
 518                 ch_free( attrs );
 519         }
 520
 521         if ( lc != NULL ) {
 522                 ldap_back_release_conn( op, rs, lc );
 523         }
 524
 525         return rs->sr_err;
 526 }
 527
 528 static int
 529 ldap_build_entry(
 530                 Operation       *op,
 531                 LDAPMessage     *e,
 532                 Entry           *ent,
 533                 struct berval   *bdn )
 534 {
 535         struct berval   a;
 536         BerElement      ber = *e->lm_ber;
 537         Attribute       *attr, **attrp;
 538         const char      *text;
 539         int             last;
 540
 541         /* safe assumptions ... */
 542         assert( ent != NULL );
 543         BER_BVZERO( &ent->e_bv );
 544
 545         if ( ber_scanf( &ber, "{m{", bdn ) == LBER_ERROR ) {
 546                 return LDAP_DECODING_ERROR;
 547         }
 548
 549         /*
 550          * Note: this may fail if the target host(s) schema differs
 551          * from the one known to the meta, and a DN with unknown
 552          * attributes is returned.
 553          *
 554          * FIXME: should we log anything, or delegate to dnNormalize?
 555          */
 556         /* Note: if the distinguished values or the naming attributes
 557          * change, should we massage them as well?
 558          */
 559         if ( dnPrettyNormal( NULL, bdn, &ent->e_name, &ent->e_nname,
 560                 op->o_tmpmemctx ) != LDAP_SUCCESS )
 561         {
 562                 return LDAP_INVALID_DN_SYNTAX;
 563         }
 564
 565         attrp = &ent->e_attrs;
 566
 567         while ( ber_scanf( &ber, "{m", &a ) != LBER_ERROR ) {
 568                 int                             i;
 569                 slap_syntax_validate_func       *validate;
 570                 slap_syntax_transform_func      *pretty;
 571
 572                 attr = attr_alloc( NULL );
 573                 if ( attr == NULL ) {
 574                         continue;
 575                 }
 576                 if ( slap_bv2ad( &a, &attr->a_desc, &text )
 577                                 != LDAP_SUCCESS )
 578                 {
 579                         if ( slap_bv2undef_ad( &a, &attr->a_desc, &text,
 580                                 SLAP_AD_PROXIED ) != LDAP_SUCCESS )
 581                         {
 582                                 Debug( LDAP_DEBUG_ANY,
 583                                         "%s ldap_build_entry: "
 584                                         "slap_bv2undef_ad(%s): %s\n",
 585                                         op->o_log_prefix, a.bv_val, text );
 586                                 attr_free( attr );
 587                                 continue;
 588                         }
 589                 }
 590
 591                 /* no subschemaSubentry */
 592                 if ( attr->a_desc == slap_schema.si_ad_subschemaSubentry
 593                         || attr->a_desc == slap_schema.si_ad_entryDN )
 594                 {
 595
 596                         /*
 597                          * We eat target's subschemaSubentry because
 598                          * a search for this value is likely not
 599                          * to resolve to the appropriate backend;
 600                          * later, the local subschemaSubentry is
 601                          * added.
 602                          *
 603                          * We also eat entryDN because the frontend
 604                          * will reattach it without checking if already
 605                          * present...
 606                          */
 607                         ( void )ber_scanf( &ber, "x" /* [W] */ );
 608
 609                         attr_free( attr );
 610                         continue;
 611                 }
 612
 613                 if ( ber_scanf( &ber, "[W]", &attr->a_vals ) == LBER_ERROR
 614                                 || attr->a_vals == NULL )
 615                 {
 616                         /*
 617                          * Note: attr->a_vals can be null when using
 618                          * values result filter
 619                          */
 620                         attr->a_vals = (struct berval *)&slap_dummy_bv;
 621                         last = 0;
 622
 623                 } else {
 624                         for ( last = 0; !BER_BVISNULL( &attr->a_vals[ last ] ); last++ )
 625                                 /* just count vals */ ;
 626                 }
 627
 628                 validate = attr->a_desc->ad_type->sat_syntax->ssyn_validate;
 629                 pretty = attr->a_desc->ad_type->sat_syntax->ssyn_pretty;
 630
 631                 if ( !validate && !pretty ) {
 632                         attr->a_nvals = NULL;
 633                         attr_free( attr );
 634                         goto next_attr;
 635                 }
 636
 637                 for ( i = 0; i < last; i++ ) {
 638                         struct berval   pval;
 639                         int             rc;
 640
 641                         if ( pretty ) {
 642                                 rc = pretty( attr->a_desc->ad_type->sat_syntax,
 643                                         &attr->a_vals[i], &pval, NULL );
 644
 645                         } else {
 646                                 rc = validate( attr->a_desc->ad_type->sat_syntax,
 647                                         &attr->a_vals[i] );
 648                         }
 649
 650                         if ( rc != LDAP_SUCCESS ) {
 651                                 /* check if, by chance, it's an undefined objectClass */
 652                                 if ( attr->a_desc == slap_schema.si_ad_objectClass &&
 653                                                 oc_bvfind_undef( &attr->a_vals[i] ) != NULL )
 654                                 {
 655                                         ber_dupbv( &pval, &attr->a_vals[i] );
 656
 657                                 } else {
 658                                         attr->a_nvals = NULL;
 659                                         attr_free( attr );
 660                                         goto next_attr;
 661                                 }
 662                         }
 663
 664                         if ( pretty ) {
 665                                 LBER_FREE( attr->a_vals[i].bv_val );
 666                                 attr->a_vals[i] = pval;
 667                         }
 668                 }
 669
 670                 if ( last && attr->a_desc->ad_type->sat_equality &&
 671                                 attr->a_desc->ad_type->sat_equality->smr_normalize )
 672                 {
 673                         attr->a_nvals = ch_malloc( ( last + 1 )*sizeof( struct berval ) );
 674                         for ( i = 0; i < last; i++ ) {
 675                                 int             rc;
 676
 677                                 /*
 678                                  * check that each value is valid per syntax
 679                                  * and pretty if appropriate
 680                                  */
 681                                 rc = attr->a_desc->ad_type->sat_equality->smr_normalize(
 682                                         SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
 683                                         attr->a_desc->ad_type->sat_syntax,
 684                                         attr->a_desc->ad_type->sat_equality,
 685                                         &attr->a_vals[i], &attr->a_nvals[i],
 686                                         NULL );
 687
 688                                 if ( rc != LDAP_SUCCESS ) {
 689                                         BER_BVZERO( &attr->a_nvals[i] );
 690                                         attr_free( attr );
 691                                         goto next_attr;
 692                                 }
 693                         }
 694                         BER_BVZERO( &attr->a_nvals[i] );
 695
 696                 } else {
 697                         attr->a_nvals = attr->a_vals;
 698                 }
 699                 *attrp = attr;
 700                 attrp = &attr->a_next;
 701
 702 next_attr:;
 703         }
 704
 705         return LDAP_SUCCESS;
 706 }
 707
 708 /* return 0 IFF we can retrieve the entry with ndn
 709  */
 710 int
 711 ldap_back_entry_get(
 712                 Operation               *op,
 713                 struct berval           *ndn,
 714                 ObjectClass             *oc,
 715                 AttributeDescription    *at,
 716                 int                     rw,
 717                 Entry                   **ent )
 718 {
 719         ldapinfo_t      *li = (ldapinfo_t *) op->o_bd->be_private;
 720
 721         ldapconn_t      *lc = NULL;
 722         int             rc = 1,
 723                         do_not_cache;
 724         struct berval   bdn;
 725         LDAPMessage     *result = NULL,
 726                         *e = NULL;
 727         char            *attr[3], **attrp = NULL;
 728         char            *filter = NULL;
 729         SlapReply       rs;
 730         int             do_retry = 1;
 731         LDAPControl     **ctrls = NULL;
 732
 733         *ent = NULL;
 734
 735         /* Tell getconn this is a privileged op */
 736         do_not_cache = op->o_do_not_cache;
 737         op->o_do_not_cache = 1;
 738         if ( !ldap_back_dobind( &lc, op, &rs, LDAP_BACK_DONTSEND ) ) {
 739                 op->o_do_not_cache = do_not_cache;
 740                 return rs.sr_err;
 741         }
 742         op->o_do_not_cache = do_not_cache;
 743
 744         if ( at ) {
 745                 attrp = attr;
 746                 if ( oc && at != slap_schema.si_ad_objectClass ) {
 747                         attr[0] = slap_schema.si_ad_objectClass->ad_cname.bv_val;
 748                         attr[1] = at->ad_cname.bv_val;
 749                         attr[2] = NULL;
 750
 751                 } else {
 752                         attr[0] = at->ad_cname.bv_val;
 753                         attr[1] = NULL;
 754                 }
 755         }
 756
 757         if ( oc ) {
 758                 char    *ptr;
 759
 760                 filter = ch_malloc( STRLENOF( "(objectclass=)" )
 761                                 + oc->soc_cname.bv_len + 1 );
 762                 ptr = lutil_strcopy( filter, "(objectclass=" );
 763                 ptr = lutil_strcopy( ptr, oc->soc_cname.bv_val );
 764                 *ptr++ = ')';
 765                 *ptr++ = '\0';
 766         }
 767
 768 retry:
 769         ctrls = op->o_ctrls;
 770         rc = ldap_back_proxy_authz_ctrl( &lc->lc_bound_ndn,
 771                 li->li_version, &li->li_idassert, op, &rs, &ctrls );
 772         if ( rc != LDAP_SUCCESS ) {
 773                 goto cleanup;
 774         }
 775
 776         rc = ldap_search_ext_s( lc->lc_ld, ndn->bv_val, LDAP_SCOPE_BASE, filter,
 777                                 attrp, 0, ctrls, NULL,
 778                                 NULL, LDAP_NO_LIMIT, &result );
 779         if ( rc != LDAP_SUCCESS ) {
 780                 if ( rc == LDAP_SERVER_DOWN && do_retry ) {
 781                         do_retry = 0;
 782                         if ( ldap_back_retry( &lc, op, &rs, LDAP_BACK_DONTSEND ) ) {
 783                                 /* if the identity changed, there might be need to re-authz */
 784                                 (void)ldap_back_proxy_authz_ctrl_free( op, &ctrls );
 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