1 /* search.c - ldap backend search function */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 1999-2005 The OpenLDAP Foundation.
6 * Portions Copyright 1999-2003 Howard Chu.
7 * Portions Copyright 2000-2003 Pierangelo Masarati.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted only as authorized by the OpenLDAP
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>.
19 * This work was initially developed by the Howard Chu for inclusion
20 * in OpenLDAP Software and subsequently enhanced by Pierangelo
28 #include <ac/socket.h>
29 #include <ac/string.h>
33 #include "back-ldap.h"
34 #undef ldap_debug /* silence a warning in ldap-int.h */
35 #include "../../../libraries/libldap/ldap-int.h"
40 ldap_build_entry( Operation *op, LDAPMessage *e, Entry *ent,
41 struct berval *bdn, int flags );
42 #define LDAP_BUILD_ENTRY_PRIVATE 0x01
45 * Quick'n'dirty rewrite of filter in case of error, to deal with
46 * <draft-zeilenga-ldap-t-f>.
49 ldap_back_munge_filter(
51 struct berval *filter )
53 struct ldapinfo *li = (struct ldapinfo *) op->o_bd->be_private;
58 Debug( LDAP_DEBUG_ARGS, "=> ldap_back_munge_filter \"%s\"\n",
59 filter->bv_val, 0, 0 );
61 for ( ptr = strstr( filter->bv_val, "(?=" );
63 ptr = strstr( ptr, "(?=" ) )
66 bv_true = BER_BVC( "(?=true)" ),
67 bv_false = BER_BVC( "(?=false)" ),
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,
74 oldfilter = BER_BVNULL;
76 if ( strncmp( ptr, bv_true.bv_val, bv_true.bv_len ) == 0 ) {
78 if ( li->flags & LDAP_BACK_F_SUPPORT_T_F ) {
85 } else if ( strncmp( ptr, bv_false.bv_val, bv_false.bv_len ) == 0 )
88 if ( li->flags & LDAP_BACK_F_SUPPORT_T_F ) {
101 if ( !( li->flags & LDAP_BACK_F_SUPPORT_T_F ) ) {
102 filter->bv_len += newbv->bv_len - oldbv->bv_len;
103 if ( filter->bv_val == op->ors_filterstr.bv_val ) {
104 filter->bv_val = op->o_tmpalloc( filter->bv_len + 1,
107 AC_MEMCPY( filter->bv_val, op->ors_filterstr.bv_val,
108 op->ors_filterstr.bv_len + 1 );
111 filter->bv_val = op->o_tmprealloc( filter->bv_val,
112 filter->bv_len + 1, op->o_tmpmemctx );
115 ptr = filter->bv_val + ( ptr - oldfilter.bv_val );
118 AC_MEMCPY( &ptr[ newbv->bv_len ],
119 &ptr[ oldbv->bv_len ],
120 oldfilter.bv_len - ( ptr - filter->bv_val ) - oldbv->bv_len + 1 );
121 AC_MEMCPY( ptr, newbv->bv_val, newbv->bv_len );
123 ptr += newbv->bv_len;
128 Debug( LDAP_DEBUG_ARGS, "<= ldap_back_munge_filter \"%s\" (%d)\n",
129 filter->bv_val, gotit, 0 );
145 struct berval match = BER_BVNULL,
149 int dontfreetext = 0;
151 LDAPControl **ctrls = NULL;
153 lc = ldap_back_getconn( op, rs, LDAP_BACK_SENDERR );
159 * FIXME: in case of values return filter, we might want
160 * to map attrs and maybe rewrite value
162 if ( !ldap_back_dobind( lc, op, rs, LDAP_BACK_SENDERR ) ) {
166 /* should we check return values? */
167 if ( op->ors_deref != -1 ) {
168 ldap_set_option( lc->lc_ld, LDAP_OPT_DEREF,
169 (void *)&op->ors_deref );
172 if ( op->ors_tlimit != SLAP_NO_LIMIT ) {
173 tv.tv_sec = op->ors_tlimit;
180 if ( op->ors_attrs ) {
181 for ( i = 0; !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++ )
182 /* just count attrs */ ;
184 attrs = ch_malloc( ( i + 1 )*sizeof( char * ) );
185 if ( attrs == NULL ) {
186 rs->sr_err = LDAP_NO_MEMORY;
191 for ( i = 0; !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++ ) {
192 attrs[ i ] = op->ors_attrs[i].an_name.bv_val;
198 rc = ldap_back_proxy_authz_ctrl( lc, op, rs, &ctrls );
199 if ( rc != LDAP_SUCCESS ) {
204 /* deal with <draft-zeilenga-ldap-t-f> filters */
205 filter = op->ors_filterstr;
207 rs->sr_err = ldap_search_ext( lc->lc_ld, op->o_req_ndn.bv_val,
208 op->ors_scope, filter.bv_val,
209 attrs, op->ors_attrsonly, ctrls, NULL,
210 tv.tv_sec ? &tv : NULL,
211 op->ors_slimit, &msgid );
213 if ( rs->sr_err != LDAP_SUCCESS ) {
215 switch ( rs->sr_err ) {
216 case LDAP_SERVER_DOWN:
219 if ( ldap_back_retry( lc, op, rs, LDAP_BACK_DONTSEND ) ) {
223 rc = ldap_back_op_result( lc, op, rs, msgid, LDAP_BACK_DONTSEND );
224 ldap_back_freeconn( op, lc );
228 case LDAP_FILTER_ERROR:
229 if ( ldap_back_munge_filter( op, &filter ) ) {
233 /* invalid filters return success with no data */
234 rs->sr_err = LDAP_SUCCESS;
239 rs->sr_err = slap_map_api2result( rs );
245 /* We pull apart the ber result, stuff it into a slapd entry, and
246 * let send_search_entry stuff it back into ber format. Slow & ugly,
247 * but this is necessary for version matching, and for ACL processing.
250 for ( rc = 0; rc != -1; rc = ldap_result( lc->lc_ld, msgid, 0, &tv, &res ) )
252 /* check for abandon */
253 if ( op->o_abandon ) {
254 ldap_abandon_ext( lc->lc_ld, msgid, NULL, NULL );
262 ldap_pvt_thread_yield();
264 } else if ( rc == LDAP_RES_SEARCH_ENTRY ) {
271 e = ldap_first_entry( lc->lc_ld, res );
272 rc = ldap_build_entry( op, e, &ent, &bdn,
273 LDAP_BUILD_ENTRY_PRIVATE );
274 if ( rc == LDAP_SUCCESS ) {
276 rs->sr_attrs = op->ors_attrs;
277 rs->sr_operational_attrs = NULL;
279 abort = send_search_entry( op, rs );
280 while ( ent.e_attrs ) {
284 ent.e_attrs = a->a_next;
286 if ( a->a_nvals != a->a_vals ) {
287 ber_bvarray_free( a->a_nvals );
289 if ( a->a_vals != &slap_dummy_bv ) {
290 ber_bvarray_free( a->a_vals );
295 if ( ent.e_dn && ( ent.e_dn != bdn.bv_val ) ) {
304 ldap_abandon_ext( lc->lc_ld, msgid, NULL, NULL );
308 } else if ( rc == LDAP_RES_SEARCH_REFERENCE ) {
309 char **references = NULL;
313 rc = ldap_parse_reference( lc->lc_ld, res,
314 &references, &rs->sr_ctrls, 1 );
316 if ( rc != LDAP_SUCCESS ) {
320 if ( references == NULL ) {
324 for ( cnt = 0; references[ cnt ]; cnt++ )
327 rs->sr_ref = ch_calloc( cnt + 1, sizeof( struct berval ) );
329 for ( cnt = 0; references[ cnt ]; cnt++ ) {
330 ber_str2bv( references[ cnt ], 0, 0, &rs->sr_ref[ cnt ] );
333 /* ignore return value by now */
334 ( void )send_search_reference( op, rs );
338 ldap_value_free( references );
339 ch_free( rs->sr_ref );
343 if ( rs->sr_ctrls ) {
344 ldap_controls_free( rs->sr_ctrls );
349 char **references = NULL;
351 rc = ldap_parse_result( lc->lc_ld, res, &rs->sr_err,
352 &match.bv_val, (char **)&rs->sr_text,
353 &references, &rs->sr_ctrls, 1 );
354 if ( rc != LDAP_SUCCESS ) {
357 rs->sr_err = slap_map_api2result( rs );
362 for ( cnt = 0; references[ cnt ]; cnt++ )
365 rs->sr_ref = ch_calloc( cnt + 1, sizeof( struct berval ) );
367 for ( cnt = 0; references[ cnt ]; cnt++ ) {
368 ber_str2bv( references[ cnt ], 0, 1, &rs->sr_ref[ cnt ] );
373 ldap_value_free( references );
385 if ( ldap_back_retry( lc, op, rs, LDAP_BACK_SENDERR ) ) {
389 rs->sr_err = LDAP_SERVER_DOWN;
394 * Rewrite the matched portion of the search base, if required
396 if ( !BER_BVISNULL( &match ) && !BER_BVISEMPTY( &match ) ) {
397 rs->sr_matched = match.bv_val;
399 if ( rs->sr_v2ref ) {
400 rs->sr_err = LDAP_REFERRAL;
404 if ( rc != SLAPD_ABANDON ) {
405 send_ldap_result( op, rs );
408 (void)ldap_back_proxy_authz_ctrl_free( op, &ctrls );
410 if ( rs->sr_ctrls ) {
411 ldap_controls_free( rs->sr_ctrls );
415 if ( match.bv_val ) {
416 rs->sr_matched = NULL;
417 LDAP_FREE( match.bv_val );
420 if ( !BER_BVISNULL( &filter ) && filter.bv_val != op->ors_filterstr.bv_val ) {
421 op->o_tmpfree( filter.bv_val, op->o_tmpmemctx );
425 if ( !dontfreetext ) {
426 LDAP_FREE( (char *)rs->sr_text );
432 ber_bvarray_free( rs->sr_ref );
452 BerElement ber = *e->lm_ber;
453 Attribute *attr, **attrp;
456 int private = flags & LDAP_BUILD_ENTRY_PRIVATE;
458 /* safe assumptions ... */
460 BER_BVZERO( &ent->e_bv );
462 if ( ber_scanf( &ber, "{m{", bdn ) == LBER_ERROR ) {
463 return LDAP_DECODING_ERROR;
467 * Note: this may fail if the target host(s) schema differs
468 * from the one known to the meta, and a DN with unknown
469 * attributes is returned.
471 * FIXME: should we log anything, or delegate to dnNormalize?
473 /* Note: if the distinguished values or the naming attributes
474 * change, should we massage them as well?
476 if ( dnPrettyNormal( NULL, bdn, &ent->e_name, &ent->e_nname,
477 op->o_tmpmemctx ) != LDAP_SUCCESS )
479 return LDAP_INVALID_DN_SYNTAX;
482 attrp = &ent->e_attrs;
484 while ( ber_scanf( &ber, "{m", &a ) != LBER_ERROR ) {
486 slap_syntax_validate_func *validate;
487 slap_syntax_transform_func *pretty;
489 attr = (Attribute *)ch_malloc( sizeof( Attribute ) );
490 if ( attr == NULL ) {
496 if ( slap_bv2ad( &a, &attr->a_desc, &text )
499 if ( slap_bv2undef_ad( &a, &attr->a_desc, &text )
502 Debug( LDAP_DEBUG_ANY,
503 "slap_bv2undef_ad(%s): %s\n",
510 /* no subschemaSubentry */
511 if ( attr->a_desc == slap_schema.si_ad_subschemaSubentry ) {
514 * We eat target's subschemaSubentry because
515 * a search for this value is likely not
516 * to resolve to the appropriate backend;
517 * later, the local subschemaSubentry is
520 ( void )ber_scanf( &ber, "x" /* [W] */ );
526 if ( ber_scanf( &ber, "[W]", &attr->a_vals ) == LBER_ERROR
527 || attr->a_vals == NULL )
530 * Note: attr->a_vals can be null when using
531 * values result filter
534 attr->a_vals = (struct berval *)&slap_dummy_bv;
537 attr->a_vals = ch_malloc( sizeof( struct berval ) );
538 BER_BVZERO( &attr->a_vals[ 0 ] );
543 for ( last = 0; !BER_BVISNULL( &attr->a_vals[ last ] ); last++ )
544 /* just count vals */ ;
547 validate = attr->a_desc->ad_type->sat_syntax->ssyn_validate;
548 pretty = attr->a_desc->ad_type->sat_syntax->ssyn_pretty;
550 if ( !validate && !pretty ) {
551 attr->a_nvals = NULL;
556 for ( i = 0; i < last; i++ ) {
561 rc = pretty( attr->a_desc->ad_type->sat_syntax,
562 &attr->a_vals[i], &pval, NULL );
565 rc = validate( attr->a_desc->ad_type->sat_syntax,
569 if ( rc != LDAP_SUCCESS ) {
570 /* check if, by chance, it's an undefined objectClass */
571 if ( attr->a_desc == slap_schema.si_ad_objectClass &&
572 oc_bvfind_undef( &attr->a_vals[i] ) != NULL )
574 ber_dupbv( &pval, &attr->a_vals[i] );
577 attr->a_nvals = NULL;
584 LBER_FREE( attr->a_vals[i].bv_val );
585 attr->a_vals[i] = pval;
589 if ( last && attr->a_desc->ad_type->sat_equality &&
590 attr->a_desc->ad_type->sat_equality->smr_normalize )
592 attr->a_nvals = ch_malloc( ( last + 1 )*sizeof( struct berval ) );
593 for ( i = 0; i < last; i++ ) {
597 * check that each value is valid per syntax
598 * and pretty if appropriate
600 rc = attr->a_desc->ad_type->sat_equality->smr_normalize(
601 SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
602 attr->a_desc->ad_type->sat_syntax,
603 attr->a_desc->ad_type->sat_equality,
604 &attr->a_vals[i], &attr->a_nvals[i],
607 if ( rc != LDAP_SUCCESS ) {
608 BER_BVZERO( &attr->a_nvals[i] );
613 BER_BVZERO( &attr->a_nvals[i] );
616 attr->a_nvals = attr->a_vals;
619 attrp = &attr->a_next;
627 /* return 0 IFF we can retrieve the entry with ndn
634 AttributeDescription *at,
643 LDAPMessage *result = NULL,
649 LDAPControl **ctrls = NULL;
651 /* Tell getconn this is a privileged op */
652 do_not_cache = op->o_do_not_cache;
653 op->o_do_not_cache = 1;
654 lc = ldap_back_getconn( op, &rs, LDAP_BACK_DONTSEND );
655 if ( !lc || !ldap_back_dobind( lc, op, &rs, LDAP_BACK_DONTSEND ) ) {
656 op->o_do_not_cache = do_not_cache;
659 op->o_do_not_cache = do_not_cache;
662 if ( oc && at != slap_schema.si_ad_objectClass ) {
663 gattr[0] = slap_schema.si_ad_objectClass->ad_cname.bv_val;
664 gattr[1] = at->ad_cname.bv_val;
668 gattr[0] = at->ad_cname.bv_val;
676 filter = ch_malloc( STRLENOF( "(objectclass=)" )
677 + oc->soc_cname.bv_len + 1 );
678 ptr = lutil_strcopy( filter, "(objectclass=" );
679 ptr = lutil_strcopy( ptr, oc->soc_cname.bv_val );
685 rc = ldap_back_proxy_authz_ctrl( lc, op, &rs, &ctrls );
686 if ( rc != LDAP_SUCCESS ) {
691 rc = ldap_search_ext_s( lc->lc_ld, ndn->bv_val, LDAP_SCOPE_BASE, filter,
692 at ? gattr : NULL, 0, ctrls, NULL,
693 LDAP_NO_LIMIT, LDAP_NO_LIMIT, &result );
694 if ( rc != LDAP_SUCCESS ) {
695 if ( rc == LDAP_SERVER_DOWN && do_retry ) {
697 if ( ldap_back_retry( lc, op, &rs, LDAP_BACK_DONTSEND ) ) {
704 e = ldap_first_entry( lc->lc_ld, result );
709 *ent = ch_calloc( 1, sizeof( Entry ) );
711 rc = ldap_build_entry( op, e, *ent, &bdn, 0 );
713 if ( rc != LDAP_SUCCESS ) {
719 (void)ldap_back_proxy_authz_ctrl_free( op, &ctrls );
722 ldap_msgfree( result );