2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 * Copyright 1999-2006 The OpenLDAP Foundation.
5 * Portions Copyright 2001-2003 Pierangelo Masarati.
6 * Portions Copyright 1999-2003 Howard Chu.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted only as authorized by the OpenLDAP
13 * A copy of this license is available in the file LICENSE in the
14 * top-level directory of the distribution or, alternatively, at
15 * <http://www.OpenLDAP.org/license.html>.
18 * This work was initially developed by the Howard Chu for inclusion
19 * in OpenLDAP Software and subsequently enhanced by Pierangelo
27 #include <ac/socket.h>
28 #include <ac/string.h>
32 #include "../back-ldap/back-ldap.h"
33 #include "back-meta.h"
34 #undef ldap_debug /* silence a warning in ldap-int.h */
36 #include "../../../libraries/libldap/ldap-int.h"
46 typedef enum meta_search_candidate_t {
48 META_SEARCH_NOT_CANDIDATE,
50 } meta_search_candidate_t;
52 static meta_search_candidate_t
53 meta_back_search_start(
57 metasingleconn_t *msc,
62 metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
63 struct berval realbase = op->o_req_dn;
64 int realscope = op->ors_scope;
65 ber_len_t suffixlen = 0;
66 struct berval mbase = BER_BVNULL;
67 struct berval mfilter = BER_BVNULL;
68 char **mapped_attrs = NULL;
70 meta_search_candidate_t retcode;
71 struct timeval tv, *tvp = NULL;
73 /* should we check return values? */
74 if ( op->ors_deref != -1 ) {
75 ldap_set_option( msc->msc_ld, LDAP_OPT_DEREF,
76 ( void * )&op->ors_deref );
79 if ( op->ors_tlimit != SLAP_NO_LIMIT ) {
80 tv.tv_sec = op->ors_tlimit > 0 ? op->ors_tlimit : 1;
84 dc->target = &mi->mi_targets[ candidate ];
87 * modifies the base according to the scope, if required
89 suffixlen = mi->mi_targets[ candidate ].mt_nsuffix.bv_len;
90 if ( suffixlen > op->o_req_ndn.bv_len ) {
91 switch ( op->ors_scope ) {
92 case LDAP_SCOPE_SUBTREE:
94 * make the target suffix the new base
95 * FIXME: this is very forgiving, because
96 * "illegal" searchBases may be turned
97 * into the suffix of the target; however,
98 * the requested searchBase already passed
99 * thru the candidate analyzer...
101 if ( dnIsSuffix( &mi->mi_targets[ candidate ].mt_nsuffix,
104 realbase = mi->mi_targets[ candidate ].mt_nsuffix;
105 if ( mi->mi_targets[ candidate ].mt_scope == LDAP_SCOPE_SUBORDINATE ) {
106 realscope = LDAP_SCOPE_SUBORDINATE;
111 * this target is no longer candidate
113 return META_SEARCH_NOT_CANDIDATE;
117 case LDAP_SCOPE_SUBORDINATE:
118 case LDAP_SCOPE_ONELEVEL:
120 struct berval rdn = mi->mi_targets[ candidate ].mt_nsuffix;
121 rdn.bv_len -= op->o_req_ndn.bv_len + STRLENOF( "," );
122 if ( dnIsOneLevelRDN( &rdn )
123 && dnIsSuffix( &mi->mi_targets[ candidate ].mt_nsuffix, &op->o_req_ndn ) )
126 * if there is exactly one level,
127 * make the target suffix the new
128 * base, and make scope "base"
130 realbase = mi->mi_targets[ candidate ].mt_nsuffix;
131 if ( op->ors_scope == LDAP_SCOPE_SUBORDINATE ) {
132 if ( mi->mi_targets[ candidate ].mt_scope == LDAP_SCOPE_SUBORDINATE ) {
133 realscope = LDAP_SCOPE_SUBORDINATE;
135 realscope = LDAP_SCOPE_SUBTREE;
138 realscope = LDAP_SCOPE_BASE;
141 } /* else continue with the next case */
144 case LDAP_SCOPE_BASE:
146 * this target is no longer candidate
148 return META_SEARCH_NOT_CANDIDATE;
153 * Rewrite the search base, if required
155 dc->ctx = "searchBase";
156 switch ( ldap_back_dn_massage( dc, &realbase, &mbase ) ) {
160 case REWRITE_REGEXEC_UNWILLING:
161 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
162 rs->sr_text = "Operation not allowed";
163 send_ldap_result( op, rs );
164 return META_SEARCH_ERR;
166 case REWRITE_REGEXEC_ERR:
169 * this target is no longer candidate
171 return META_SEARCH_NOT_CANDIDATE;
177 rc = ldap_back_filter_map_rewrite( dc, op->ors_filter,
178 &mfilter, BACKLDAP_MAP );
183 case LDAP_COMPARE_FALSE:
186 * this target is no longer candidate
188 retcode = META_SEARCH_NOT_CANDIDATE;
193 * Maps required attributes
195 rc = ldap_back_map_attrs( &mi->mi_targets[ candidate ].mt_rwmap.rwm_at,
196 op->ors_attrs, BACKLDAP_MAP, &mapped_attrs );
197 if ( rc != LDAP_SUCCESS ) {
199 * this target is no longer candidate
201 retcode = META_SEARCH_NOT_CANDIDATE;
208 rc = ldap_search_ext( msc->msc_ld,
209 mbase.bv_val, realscope, mfilter.bv_val,
210 mapped_attrs, op->ors_attrsonly,
211 op->o_ctrls, NULL, tvp, op->ors_slimit,
212 &candidates[ candidate ].sr_msgid );
213 if ( rc == LDAP_SUCCESS ) {
214 retcode = META_SEARCH_CANDIDATE;
217 candidates[ candidate ].sr_msgid = -1;
218 retcode = META_SEARCH_NOT_CANDIDATE;
222 if ( mapped_attrs ) {
223 free( mapped_attrs );
225 if ( mfilter.bv_val != op->ors_filterstr.bv_val ) {
226 free( mfilter.bv_val );
228 if ( mbase.bv_val != realbase.bv_val ) {
229 free( mbase.bv_val );
236 meta_back_search( Operation *op, SlapReply *rs )
238 metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
240 struct timeval tv = { 0, 0 };
241 time_t stoptime = (time_t)-1;
242 LDAPMessage *res = NULL, *e;
243 int rc = 0, sres = LDAP_SUCCESS;
244 char *matched = NULL;
245 int last = 0, ncandidates = 0,
246 initial_candidates = 0, candidate_match = 0;
251 SlapReply *candidates = meta_back_candidates_get( op );
254 * controls are set in ldap_back_dobind()
256 * FIXME: in case of values return filter, we might want
257 * to map attrs and maybe rewrite value
259 mc = meta_back_getconn( op, rs, NULL, LDAP_BACK_SENDERR );
260 if ( !mc || !meta_back_dobind( op, rs, mc, LDAP_BACK_SENDERR ) ) {
264 dc.conn = op->o_conn;
270 for ( i = 0; i < mi->mi_ntargets; i++ ) {
271 metasingleconn_t *msc = &mc->mc_conns[ i ];
273 candidates[ i ].sr_msgid = -1;
274 candidates[ i ].sr_matched = NULL;
275 candidates[ i ].sr_text = NULL;
276 candidates[ i ].sr_ref = NULL;
277 candidates[ i ].sr_ctrls = NULL;
279 if ( candidates[ i ].sr_tag != META_CANDIDATE
280 || candidates[ i ].sr_err != LDAP_SUCCESS )
285 switch ( meta_back_search_start( op, rs, &dc, msc, i, candidates ) )
287 case META_SEARCH_NOT_CANDIDATE:
290 case META_SEARCH_CANDIDATE:
291 candidates[ i ].sr_type = REP_INTERMEDIATE;
295 case META_SEARCH_ERR:
301 initial_candidates = ncandidates;
308 for ( i = 0; i < mi->mi_ntargets; i++ ) {
309 if ( candidates[ i ].sr_tag == META_CANDIDATE ) {
317 Debug( LDAP_DEBUG_ANY, "%s meta_back_search: ncandidates=%d "
318 "cnd=\"%s\"\n", op->o_log_prefix, ncandidates, cnd );
322 if ( initial_candidates == 0 ) {
323 /* NOTE: here we are not sending any matchedDN;
324 * this is intended, because if the back-meta
325 * is serving this search request, but no valid
326 * candidate could be looked up, it means that
327 * there is a hole in the mapping of the targets
328 * and thus no knowledge of any remote superior
330 Debug( LDAP_DEBUG_ANY, "%s meta_back_search: "
331 "base=\"%s\" scope=%d: "
332 "no candidate could be selected\n",
333 op->o_log_prefix, op->o_req_dn.bv_val,
336 /* FIXME: we're sending the first error we encounter;
337 * maybe we should pick the worst... */
338 rc = LDAP_NO_SUCH_OBJECT;
339 for ( i = 0; i < mi->mi_ntargets; i++ ) {
340 if ( candidates[ i ].sr_tag == META_CANDIDATE
341 && candidates[ i ].sr_err != LDAP_SUCCESS )
343 rc = candidates[ i ].sr_err;
348 send_ldap_error( op, rs, rc, NULL );
353 /* We pull apart the ber result, stuff it into a slapd entry, and
354 * let send_search_entry stuff it back into ber format. Slow & ugly,
355 * but this is necessary for version matching, and for ACL processing.
358 if ( op->ors_tlimit != SLAP_NO_LIMIT ) {
359 stoptime = op->o_time + op->ors_tlimit;
363 * In case there are no candidates, no cycle takes place...
365 * FIXME: we might use a queue, to better balance the load
366 * among the candidates
368 for ( rc = 0; ncandidates > 0; ) {
369 int gotit = 0, doabandon = 0;
371 for ( i = 0; i < mi->mi_ntargets; i++ ) {
372 metasingleconn_t *msc = &mc->mc_conns[ i ];
374 if ( candidates[ i ].sr_msgid == -1 ) {
378 /* check for abandon */
379 if ( op->o_abandon ) {
384 * FIXME: handle time limit as well?
385 * Note that target servers are likely
386 * to handle it, so at some time we'll
387 * get a LDAP_TIMELIMIT_EXCEEDED from
391 rc = ldap_result( msc->msc_ld, candidates[ i ].sr_msgid,
392 LDAP_MSG_ONE, &tv, &res );
395 /* FIXME: res should not need to be freed */
396 assert( res == NULL );
398 /* check time limit */
399 if ( op->ors_tlimit != SLAP_NO_LIMIT
400 && slap_get_time() > stoptime )
403 rc = rs->sr_err = LDAP_TIMELIMIT_EXCEEDED;
404 savepriv = op->o_private;
405 op->o_private = (void *)i;
406 send_ldap_result( op, rs );
407 op->o_private = savepriv;
413 } else if ( rc == -1 ) {
415 /* something REALLY bad happened! */
416 if ( candidates[ i ].sr_type == REP_INTERMEDIATE ) {
417 candidates[ i ].sr_type = REP_RESULT;
419 if ( meta_back_retry( op, rs, &mc, i, LDAP_BACK_DONTSEND ) ) {
420 switch ( meta_back_search_start( op, rs, &dc, msc, i, candidates ) )
422 case META_SEARCH_CANDIDATE:
426 rc = rs->sr_err = LDAP_OTHER;
431 savepriv = op->o_private;
432 op->o_private = (void *)i;
433 send_ldap_result( op, rs );
434 op->o_private = savepriv;
439 * When no candidates are left,
440 * the outer cycle finishes
442 candidates[ i ].sr_msgid = -1;
444 rs->sr_err = candidates[ i ].sr_err = LDAP_OTHER;
445 rs->sr_text = "remote server unavailable";
447 } else if ( rc == LDAP_RES_SEARCH_ENTRY ) {
448 if ( candidates[ i ].sr_type == REP_INTERMEDIATE ) {
449 /* don't retry any more... */
450 candidates[ i ].sr_type = REP_RESULT;
455 e = ldap_first_entry( msc->msc_ld, res );
456 savepriv = op->o_private;
457 op->o_private = (void *)i;
458 rs->sr_err = meta_send_entry( op, rs, mc, i, e );
462 switch ( rs->sr_err ) {
463 case LDAP_SIZELIMIT_EXCEEDED:
464 savepriv = op->o_private;
465 op->o_private = (void *)i;
466 send_ldap_result( op, rs );
467 op->o_private = savepriv;
468 rs->sr_err = LDAP_SUCCESS;
471 case LDAP_UNAVAILABLE:
472 rs->sr_err = LDAP_OTHER;
475 op->o_private = savepriv;
481 * If scope is BASE, we need to jump out
482 * as soon as one entry is found; if
483 * the target pool is properly crafted,
484 * this should correspond to the sole
485 * entry that has the base DN
487 /* FIXME: this defeats the purpose of
488 * doing a search with scope == base and
489 * sizelimit = 1 to determine if a
490 * candidate is actually unique */
491 if ( op->ors_scope == LDAP_SCOPE_BASE
492 && rs->sr_nentries > 0 )
501 } else if ( rc == LDAP_RES_SEARCH_REFERENCE ) {
502 char **references = NULL;
505 if ( candidates[ i ].sr_type == REP_INTERMEDIATE ) {
506 /* don't retry any more... */
507 candidates[ i ].sr_type = REP_RESULT;
512 rc = ldap_parse_reference( msc->msc_ld, res,
513 &references, &rs->sr_ctrls, 1 );
516 if ( rc != LDAP_SUCCESS ) {
520 if ( references == NULL ) {
524 #ifdef ENABLE_REWRITE
525 dc.ctx = "referralDN";
526 #else /* ! ENABLE_REWRITE */
529 #endif /* ! ENABLE_REWRITE */
531 /* FIXME: merge all and return at the end */
533 for ( cnt = 0; references[ cnt ]; cnt++ )
536 rs->sr_ref = ch_calloc( sizeof( struct berval ), cnt + 1 );
538 for ( cnt = 0; references[ cnt ]; cnt++ ) {
539 ber_str2bv( references[ cnt ], 0, 1, &rs->sr_ref[ cnt ] );
541 BER_BVZERO( &rs->sr_ref[ cnt ] );
543 ( void )ldap_back_referral_result_rewrite( &dc, rs->sr_ref );
545 if ( rs->sr_ref != NULL && !BER_BVISNULL( &rs->sr_ref[ 0 ] ) ) {
546 /* ignore return value by now */
547 savepriv = op->o_private;
548 op->o_private = (void *)i;
549 ( void )send_search_reference( op, rs );
550 op->o_private = savepriv;
552 ber_bvarray_free( rs->sr_ref );
558 ber_memvfree( (void **)references );
561 if ( rs->sr_ctrls ) {
562 ldap_controls_free( rs->sr_ctrls );
566 } else if ( rc == LDAP_RES_SEARCH_RESULT ) {
567 char buf[ SLAP_TEXT_BUFLEN ];
568 char **references = NULL;
570 if ( candidates[ i ].sr_type == REP_INTERMEDIATE ) {
571 /* don't retry any more... */
572 candidates[ i ].sr_type = REP_RESULT;
575 /* NOTE: ignores response controls
576 * (and intermediate response controls
577 * as well, except for those with search
578 * references); this may not be correct,
579 * but if they're not ignored then
580 * back-meta would need to merge them
581 * consistently (think of pagedResults...)
583 rs->sr_err = ldap_parse_result( msc->msc_ld,
585 &candidates[ i ].sr_err,
586 (char **)&candidates[ i ].sr_matched,
587 NULL /* (char **)&candidates[ i ].sr_text */ ,
589 NULL /* &candidates[ i ].sr_ctrls (unused) */ ,
592 if ( rs->sr_err != LDAP_SUCCESS ) {
593 ldap_get_option( msc->msc_ld,
594 LDAP_OPT_ERROR_NUMBER,
596 sres = slap_map_api2result( rs );
597 candidates[ i ].sr_type = REP_RESULT;
601 /* massage matchedDN if need be */
602 if ( candidates[ i ].sr_matched != NULL ) {
603 struct berval match, mmatch;
605 ber_str2bv( candidates[ i ].sr_matched,
607 candidates[ i ].sr_matched = NULL;
609 dc.ctx = "matchedDN";
610 dc.target = &mi->mi_targets[ i ];
611 if ( !ldap_back_dn_massage( &dc, &match, &mmatch ) ) {
612 if ( mmatch.bv_val == match.bv_val ) {
613 candidates[ i ].sr_matched = ch_strdup( mmatch.bv_val );
616 candidates[ i ].sr_matched = mmatch.bv_val;
621 ldap_memfree( match.bv_val );
624 /* add references to array */
629 for ( cnt = 0; references[ cnt ]; cnt++ )
632 sr_ref = ch_calloc( sizeof( struct berval ), cnt + 1 );
634 for ( cnt = 0; references[ cnt ]; cnt++ ) {
635 ber_str2bv( references[ cnt ], 0, 1, &sr_ref[ cnt ] );
637 BER_BVZERO( &sr_ref[ cnt ] );
639 ( void )ldap_back_referral_result_rewrite( &dc, sr_ref );
642 ber_memvfree( (void **)references );
644 if ( rs->sr_v2ref == NULL ) {
645 rs->sr_v2ref = sr_ref;
648 for ( cnt = 0; !BER_BVISNULL( &sr_ref[ cnt ] ); cnt++ ) {
649 ber_bvarray_add( &rs->sr_v2ref, &sr_ref[ cnt ] );
651 ber_memfree( sr_ref );
655 rs->sr_err = candidates[ i ].sr_err;
656 sres = slap_map_api2result( rs );
658 if ( LogTest( LDAP_DEBUG_TRACE | LDAP_DEBUG_ANY ) ) {
659 snprintf( buf, sizeof( buf ),
660 "%s meta_back_search[%ld] "
661 "match=\"%s\" err=%ld",
663 candidates[ i ].sr_matched ? candidates[ i ].sr_matched : "",
664 (long) candidates[ i ].sr_err );
665 if ( candidates[ i ].sr_err == LDAP_SUCCESS ) {
666 Debug( LDAP_DEBUG_TRACE, "%s.\n", buf, 0, 0 );
669 Debug( LDAP_DEBUG_ANY, "%s (%s).\n",
670 buf, ldap_err2string( candidates[ i ].sr_err ), 0 );
675 case LDAP_NO_SUCH_OBJECT:
676 /* is_ok is touched any time a valid
677 * (even intermediate) result is
678 * returned; as a consequence, if
679 * a candidate returns noSuchObject
680 * it is ignored and the candidate
681 * is simply demoted. */
692 case LDAP_SIZELIMIT_EXCEEDED:
693 /* if a target returned sizelimitExceeded
694 * and the entry count is equal to the
695 * proxy's limit, the target would have
696 * returned more, and the error must be
697 * propagated to the client; otherwise,
698 * the target enforced a limit lower
699 * than what requested by the proxy;
701 if ( rs->sr_nentries == op->ors_slimit ) {
702 savepriv = op->o_private;
703 op->o_private = (void *)i;
704 send_ldap_result( op, rs );
705 op->o_private = savepriv;
711 if ( META_BACK_ONERR_STOP( mi ) ) {
712 savepriv = op->o_private;
713 op->o_private = (void *)i;
714 send_ldap_result( op, rs );
715 op->o_private = savepriv;
725 * When no candidates are left,
726 * the outer cycle finishes
728 candidates[ i ].sr_msgid = -1;
737 /* check for abandon */
738 if ( op->o_abandon || doabandon ) {
739 for ( i = 0; i < mi->mi_ntargets; i++ ) {
740 metasingleconn_t *msc = &mc->mc_conns[ i ];
742 if ( candidates[ i ].sr_msgid != -1 ) {
743 ldap_abandon_ext( msc->msc_ld,
744 candidates[ i ].sr_msgid,
746 candidates[ i ].sr_msgid = -1;
750 if ( op->o_abandon ) {
757 LDAP_BACK_TV_SET( &tv );
758 ldap_pvt_thread_yield();
768 * FIXME: need a better strategy to handle errors
770 rc = meta_back_op_result( mc, op, rs, META_TARGET_NONE );
775 * Rewrite the matched portion of the search base, if required
777 * FIXME: only the last one gets caught!
779 savepriv = op->o_private;
780 op->o_private = (void *)(long)mi->mi_ntargets;
781 if ( candidate_match > 0 ) {
782 struct berval pmatched = BER_BVNULL;
784 /* we use the first one */
785 for ( i = 0; i < mi->mi_ntargets; i++ ) {
786 if ( candidates[ i ].sr_tag == META_CANDIDATE
787 && candidates[ i ].sr_matched != NULL )
789 struct berval bv, pbv;
792 /* if we got success, and this target
793 * returned noSuchObject, and its suffix
794 * is a superior of the searchBase,
795 * ignore the matchedDN */
796 if ( sres == LDAP_SUCCESS
797 && candidates[ i ].sr_err == LDAP_NO_SUCH_OBJECT
798 && op->o_req_ndn.bv_len > mi->mi_targets[ i ].mt_nsuffix.bv_len )
800 free( (char *)candidates[ i ].sr_matched );
801 candidates[ i ].sr_matched = NULL;
805 ber_str2bv( candidates[ i ].sr_matched, 0, 0, &bv );
806 rc = dnPretty( NULL, &bv, &pbv, op->o_tmpmemctx );
808 if ( rc == LDAP_SUCCESS ) {
810 /* NOTE: if they all are superiors
811 * of the baseDN, the shorter is also
812 * superior of the longer... */
813 if ( pbv.bv_len > pmatched.bv_len ) {
814 if ( !BER_BVISNULL( &pmatched ) ) {
815 op->o_tmpfree( pmatched.bv_val, op->o_tmpmemctx );
818 op->o_private = (void *)i;
821 op->o_tmpfree( pbv.bv_val, op->o_tmpmemctx );
825 if ( candidates[ i ].sr_matched != NULL ) {
826 free( (char *)candidates[ i ].sr_matched );
827 candidates[ i ].sr_matched = NULL;
832 if ( !BER_BVISNULL( &pmatched ) ) {
833 matched = pmatched.bv_val;
836 } else if ( sres == LDAP_NO_SUCH_OBJECT ) {
837 matched = op->o_bd->be_suffix[ 0 ].bv_val;
846 for ( i = 0; i < mi->mi_ntargets; i++ ) {
847 if ( candidates[ i ].sr_tag == META_CANDIDATE ) {
855 snprintf( buf, sizeof( buf ), "%s meta_back_search: is_scope=%d is_ok=%d cnd=\"%s\"\n",
856 op->o_log_prefix, initial_candidates, is_ok, cnd );
858 Debug( LDAP_DEBUG_ANY, "%s", buf, 0, 0 );
863 * In case we returned at least one entry, we return LDAP_SUCCESS
864 * otherwise, the latter error code we got
866 * FIXME: we should handle error codes and return the more
867 * important/reasonable
870 if ( sres == LDAP_SUCCESS && rs->sr_v2ref ) {
871 sres = LDAP_REFERRAL;
874 rs->sr_matched = matched;
875 rs->sr_ref = ( sres == LDAP_REFERRAL ? rs->sr_v2ref : NULL );
876 send_ldap_result( op, rs );
877 op->o_private = savepriv;
878 rs->sr_matched = NULL;
882 if ( matched && matched != op->o_bd->be_suffix[ 0 ].bv_val ) {
883 op->o_tmpfree( matched, op->o_tmpmemctx );
886 if ( rs->sr_v2ref ) {
887 ber_bvarray_free( rs->sr_v2ref );
890 for ( i = 0; i < mi->mi_ntargets; i++ ) {
891 if ( candidates[ i ].sr_tag != META_CANDIDATE ) {
895 if ( candidates[ i ].sr_matched ) {
896 free( (char *)candidates[ i ].sr_matched );
897 candidates[ i ].sr_matched = NULL;
900 if ( candidates[ i ].sr_text ) {
901 ldap_memfree( (char *)candidates[ i ].sr_text );
902 candidates[ i ].sr_text = NULL;
905 if ( candidates[ i ].sr_ref ) {
906 ber_bvarray_free( candidates[ i ].sr_ref );
907 candidates[ i ].sr_ref = NULL;
910 if ( candidates[ i ].sr_ctrls ) {
911 ldap_controls_free( candidates[ i ].sr_ctrls );
912 candidates[ i ].sr_ctrls = NULL;
917 meta_back_release_conn( op, mc );
931 metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
932 struct berval a, mapped;
934 BerElement ber = *e->lm_ber;
935 Attribute *attr, **attrp;
942 if ( ber_scanf( &ber, "{m{", &bdn ) == LBER_ERROR ) {
943 return LDAP_DECODING_ERROR;
947 * Rewrite the dn of the result, if needed
949 dc.target = &mi->mi_targets[ target ];
950 dc.conn = op->o_conn;
952 dc.ctx = "searchResult";
954 rs->sr_err = ldap_back_dn_massage( &dc, &bdn, &dn );
955 if ( rs->sr_err != LDAP_SUCCESS) {
960 * Note: this may fail if the target host(s) schema differs
961 * from the one known to the meta, and a DN with unknown
962 * attributes is returned.
964 * FIXME: should we log anything, or delegate to dnNormalize?
966 rc = dnPrettyNormal( NULL, &dn, &ent.e_name, &ent.e_nname,
968 if ( dn.bv_val != bdn.bv_val ) {
973 if ( rc != LDAP_SUCCESS ) {
974 return LDAP_INVALID_DN_SYNTAX;
980 if ( mi->mi_cache.ttl != META_DNCACHE_DISABLED ) {
981 ( void )meta_dncache_update_entry( &mi->mi_cache,
982 &ent.e_nname, target );
985 attrp = &ent.e_attrs;
987 dc.ctx = "searchAttrDN";
988 while ( ber_scanf( &ber, "{m", &a ) != LBER_ERROR ) {
990 slap_syntax_validate_func *validate;
991 slap_syntax_transform_func *pretty;
993 ldap_back_map( &mi->mi_targets[ target ].mt_rwmap.rwm_at,
994 &a, &mapped, BACKLDAP_REMAP );
995 if ( BER_BVISNULL( &mapped ) || mapped.bv_val[0] == '\0' ) {
996 ( void )ber_scanf( &ber, "x" /* [W] */ );
999 attr = ( Attribute * )ch_calloc( 1, sizeof( Attribute ) );
1000 if ( attr == NULL ) {
1003 if ( slap_bv2ad( &mapped, &attr->a_desc, &text )
1005 if ( slap_bv2undef_ad( &mapped, &attr->a_desc, &text,
1006 SLAP_AD_PROXIED ) != LDAP_SUCCESS )
1008 char buf[ SLAP_TEXT_BUFLEN ];
1010 snprintf( buf, sizeof( buf ),
1011 "%s meta_send_entry(\"%s\"): "
1012 "slap_bv2undef_ad(%s): %s\n",
1013 op->o_log_prefix, ent.e_name.bv_val,
1014 mapped.bv_val, text );
1016 Debug( LDAP_DEBUG_ANY, "%s", buf, 0, 0 );
1022 /* no subschemaSubentry */
1023 if ( attr->a_desc == slap_schema.si_ad_subschemaSubentry
1024 || attr->a_desc == slap_schema.si_ad_entryDN )
1028 * We eat target's subschemaSubentry because
1029 * a search for this value is likely not
1030 * to resolve to the appropriate backend;
1031 * later, the local subschemaSubentry is
1034 * We also eat entryDN because the frontend
1035 * will reattach it without checking if already
1038 ( void )ber_scanf( &ber, "x" /* [W] */ );
1044 if ( ber_scanf( &ber, "[W]", &attr->a_vals ) == LBER_ERROR
1045 || attr->a_vals == NULL )
1047 attr->a_vals = (struct berval *)&slap_dummy_bv;
1050 for ( last = 0; !BER_BVISNULL( &attr->a_vals[ last ] ); ++last )
1054 validate = attr->a_desc->ad_type->sat_syntax->ssyn_validate;
1055 pretty = attr->a_desc->ad_type->sat_syntax->ssyn_pretty;
1057 if ( !validate && !pretty ) {
1062 if ( attr->a_desc == slap_schema.si_ad_objectClass
1063 || attr->a_desc == slap_schema.si_ad_structuralObjectClass )
1067 for ( bv = attr->a_vals; !BER_BVISNULL( bv ); bv++ ) {
1068 ldap_back_map( &mi->mi_targets[ target ].mt_rwmap.rwm_oc,
1069 bv, &mapped, BACKLDAP_REMAP );
1070 if ( BER_BVISNULL( &mapped ) || mapped.bv_val[0] == '\0') {
1076 *bv = attr->a_vals[ last ];
1077 BER_BVZERO( &attr->a_vals[ last ] );
1080 } else if ( mapped.bv_val != bv->bv_val ) {
1082 ber_dupbv( bv, &mapped );
1086 * It is necessary to try to rewrite attributes with
1087 * dn syntax because they might be used in ACLs as
1088 * members of groups; since ACLs are applied to the
1089 * rewritten stuff, no dn-based subecj clause could
1090 * be used at the ldap backend side (see
1091 * http://www.OpenLDAP.org/faq/data/cache/452.html)
1092 * The problem can be overcome by moving the dn-based
1093 * ACLs to the target directory server, and letting
1094 * everything pass thru the ldap backend.
1099 if ( attr->a_desc->ad_type->sat_syntax ==
1100 slap_schema.si_syn_distinguishedName )
1102 ldap_dnattr_result_rewrite( &dc, attr->a_vals );
1104 } else if ( attr->a_desc == slap_schema.si_ad_ref ) {
1105 ldap_back_referral_result_rewrite( &dc, attr->a_vals );
1109 for ( i = 0; i < last; i++ ) {
1114 rc = pretty( attr->a_desc->ad_type->sat_syntax,
1115 &attr->a_vals[i], &pval, NULL );
1118 rc = validate( attr->a_desc->ad_type->sat_syntax,
1123 LBER_FREE( attr->a_vals[i].bv_val );
1124 if ( --last == i ) {
1125 BER_BVZERO( &attr->a_vals[ i ] );
1128 attr->a_vals[i] = attr->a_vals[last];
1129 BER_BVZERO( &attr->a_vals[last] );
1135 LBER_FREE( attr->a_vals[i].bv_val );
1136 attr->a_vals[i] = pval;
1140 if ( last == 0 && attr->a_vals != &slap_dummy_bv ) {
1146 if ( last && attr->a_desc->ad_type->sat_equality &&
1147 attr->a_desc->ad_type->sat_equality->smr_normalize )
1151 attr->a_nvals = ch_malloc( ( last + 1 ) * sizeof( struct berval ) );
1152 for ( i = 0; i<last; i++ ) {
1153 attr->a_desc->ad_type->sat_equality->smr_normalize(
1154 SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
1155 attr->a_desc->ad_type->sat_syntax,
1156 attr->a_desc->ad_type->sat_equality,
1157 &attr->a_vals[i], &attr->a_nvals[i],
1160 BER_BVZERO( &attr->a_nvals[i] );
1163 attr->a_nvals = attr->a_vals;
1167 attrp = &attr->a_next;
1170 rs->sr_entry = &ent;
1171 rs->sr_attrs = op->ors_attrs;
1173 rs->sr_err = LDAP_SUCCESS;
1174 rc = send_search_entry( op, rs );
1176 case LDAP_UNAVAILABLE:
1180 rs->sr_entry = NULL;
1181 rs->sr_attrs = NULL;
1183 if ( !BER_BVISNULL( &ent.e_name ) ) {
1184 free( ent.e_name.bv_val );
1185 BER_BVZERO( &ent.e_name );
1187 if ( !BER_BVISNULL( &ent.e_nname ) ) {
1188 free( ent.e_nname.bv_val );
1189 BER_BVZERO( &ent.e_nname );
1191 entry_clean( &ent );