1 /* search.c - ldap backend search function */
4 * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
5 * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
7 /* This is an altered version */
9 * Copyright 1999, Howard Chu, All rights reserved. <hyc@highlandsun.com>
11 * Permission is granted to anyone to use this software for any purpose
12 * on any computer system, and to alter it and redistribute it, subject
13 * to the following restrictions:
15 * 1. The author is not responsible for the consequences of use of this
16 * software, no matter how awful, even if they arise from flaws in it.
18 * 2. The origin of this software must not be misrepresented, either by
19 * explicit claim or by omission. Since few users ever read sources,
20 * credits should appear in the documentation.
22 * 3. Altered versions must be plainly marked as such, and must not be
23 * misrepresented as being the original software. Since few users
24 * ever read sources, credits should appear in the documentation.
26 * 4. This notice may not be removed or altered.
30 * Copyright 2000, Pierangelo Masarati, All rights reserved. <ando@sys-net.it>
32 * This software is being modified by Pierangelo Masarati.
33 * The previously reported conditions apply to the modified code as well.
34 * Changes in the original code are highlighted where required.
35 * Credits for the original code go to the author, Howard Chu.
42 #include <ac/socket.h>
43 #include <ac/string.h>
47 #include "back-ldap.h"
48 #undef ldap_debug /* silence a warning in ldap-int.h */
49 #include "../../../libraries/libldap/ldap-int.h"
51 static int ldap_send_entry( Backend *be, Operation *op, struct ldapconn *lc,
52 LDAPMessage *e, AttributeName *attrs, int attrsonly );
66 struct berval *filterstr,
71 struct ldapinfo *li = (struct ldapinfo *) be->be_private;
75 int count, rc = 0, msgid, sres = LDAP_SUCCESS;
76 char *match = NULL, *err = NULL;
77 char *mapped_filter = NULL, **mapped_attrs = NULL;
81 struct berval mfilter = { 0, NULL };
82 #endif /* ENABLE_REWRITE */
83 struct slap_limits_set *limit = NULL;
85 BerVarray v2refs = NULL;
87 lc = ldap_back_getconn(li, conn, op);
93 * controls are set in ldap_back_dobind()
95 * FIXME: in case of values return filter, we might want
96 * to map attrs and maybe rewrite value
98 if ( !ldap_back_dobind( lc, op ) ) {
102 /* if not root, get appropriate limits */
103 if ( be_isroot( be, &op->o_ndn ) ) {
106 ( void ) get_limits( be, &op->o_ndn, &limit );
109 /* if no time limit requested, rely on remote server limits */
110 /* if requested limit higher than hard limit, abort */
111 if ( !isroot && tlimit > limit->lms_t_hard ) {
112 /* no hard limit means use soft instead */
113 if ( limit->lms_t_hard == 0
114 && limit->lms_t_soft > -1
115 && tlimit > limit->lms_t_soft ) {
116 tlimit = limit->lms_t_soft;
118 /* positive hard limit means abort */
119 } else if ( limit->lms_t_hard > 0 ) {
120 send_ldap_result( conn, op, LDAP_ADMINLIMIT_EXCEEDED,
121 NULL, NULL, NULL, NULL );
126 /* negative hard limit means no limit */
129 /* if no size limit requested, rely on remote server limits */
130 /* if requested limit higher than hard limit, abort */
131 if ( !isroot && slimit > limit->lms_s_hard ) {
132 /* no hard limit means use soft instead */
133 if ( limit->lms_s_hard == 0
134 && limit->lms_s_soft > -1
135 && slimit > limit->lms_s_soft ) {
136 slimit = limit->lms_s_soft;
138 /* positive hard limit means abort */
139 } else if ( limit->lms_s_hard > 0 ) {
140 send_ldap_result( conn, op, LDAP_ADMINLIMIT_EXCEEDED,
141 NULL, NULL, NULL, NULL );
146 /* negative hard limit means no limit */
149 /* should we check return values? */
151 ldap_set_option( lc->ld, LDAP_OPT_DEREF, (void *)&deref);
153 ldap_set_option( lc->ld, LDAP_OPT_TIMELIMIT, (void *)&tlimit);
155 ldap_set_option( lc->ld, LDAP_OPT_SIZELIMIT, (void *)&slimit);
158 * Rewrite the search base, if required
160 #ifdef ENABLE_REWRITE
161 switch ( rewrite_session( li->rwinfo, "searchBase",
162 base->bv_val, conn, &mbase.bv_val ) ) {
163 case REWRITE_REGEXEC_OK:
164 if ( mbase.bv_val == NULL ) {
168 LDAP_LOG( BACK_LDAP, DETAIL1,
169 "[rw] searchBase: \"%s\" -> \"%s\"\n",
170 base->bv_val, mbase.bv_val, 0 );
171 #else /* !NEW_LOGGING */
172 Debug( LDAP_DEBUG_ARGS, "rw> searchBase: \"%s\" -> \"%s\"\n%s",
173 base->bv_val, mbase.bv_val, "" );
174 #endif /* !NEW_LOGGING */
177 case REWRITE_REGEXEC_UNWILLING:
178 send_ldap_result( conn, op, LDAP_UNWILLING_TO_PERFORM,
179 NULL, "Operation not allowed", NULL, NULL );
183 case REWRITE_REGEXEC_ERR:
184 send_ldap_result( conn, op, LDAP_OTHER,
185 NULL, "Rewrite error", NULL, NULL );
191 * Rewrite the search filter, if required
193 switch ( rewrite_session( li->rwinfo, "searchFilter",
194 filterstr->bv_val, conn, &mfilter.bv_val ) ) {
195 case REWRITE_REGEXEC_OK:
196 if ( mfilter.bv_val == NULL || mfilter.bv_val[0] == '\0') {
197 if ( mfilter.bv_val != NULL ) {
198 free( mfilter.bv_val );
200 mfilter = *filterstr;
202 mfilter.bv_len = strlen( mfilter.bv_val );
206 LDAP_LOG( BACK_LDAP, DETAIL1,
207 "[rw] searchFilter: \"%s\" -> \"%s\"\n",
208 filterstr->bv_val, mfilter.bv_val, 0 );
209 #else /* !NEW_LOGGING */
210 Debug( LDAP_DEBUG_ARGS,
211 "rw> searchFilter: \"%s\" -> \"%s\"\n%s",
212 filterstr->bv_val, mfilter.bv_val, "" );
213 #endif /* !NEW_LOGGING */
216 case REWRITE_REGEXEC_UNWILLING:
217 send_ldap_result( conn, op, LDAP_UNWILLING_TO_PERFORM,
218 NULL, "Operation not allowed", NULL, NULL );
222 case REWRITE_REGEXEC_ERR:
223 send_ldap_result( conn, op, LDAP_OTHER,
224 NULL, "Rewrite error", NULL, NULL );
228 #else /* !ENABLE_REWRITE */
229 ldap_back_dn_massage( li, base, &mbase, 0, 1 );
230 #endif /* !ENABLE_REWRITE */
232 mapped_filter = ldap_back_map_filter(&li->at_map, &li->oc_map,
233 #ifdef ENABLE_REWRITE
235 #else /* !ENABLE_REWRITE */
237 #endif /* !ENABLE_REWRITE */
239 if ( mapped_filter == NULL ) {
240 #ifdef ENABLE_REWRITE
241 mapped_filter = mfilter.bv_val;
242 #else /* !ENABLE_REWRITE */
243 mapped_filter = filterstr->bv_val;
244 #endif /* !ENABLE_REWRITE */
247 #ifdef ENABLE_REWRITE
248 if ( mfilter.bv_val != filterstr->bv_val ) {
249 free( mfilter.bv_val );
251 #endif /* ENABLE_REWRITE */
253 mapped_attrs = ldap_back_map_attrs(&li->at_map, attrs, 0);
254 if ( mapped_attrs == NULL && attrs) {
255 for (count=0; attrs[count].an_name.bv_val; count++);
256 mapped_attrs = ch_malloc( (count+1) * sizeof(char *));
257 for (count=0; attrs[count].an_name.bv_val; count++) {
258 mapped_attrs[count] = attrs[count].an_name.bv_val;
260 mapped_attrs[count] = NULL;
263 msgid = ldap_search(lc->ld, mbase.bv_val, scope, mapped_filter,
264 mapped_attrs, attrsonly);
267 rc = ldap_back_op_result(lc, op);
271 /* We pull apart the ber result, stuff it into a slapd entry, and
272 * let send_search_entry stuff it back into ber format. Slow & ugly,
273 * but this is necessary for version matching, and for ACL processing.
278 rc = ldap_result(lc->ld, msgid, 0, &tv, &res))
280 /* check for abandon */
282 ldap_abandon(lc->ld, msgid);
290 ldap_pvt_thread_yield();
292 } else if (rc == LDAP_RES_SEARCH_ENTRY) {
293 e = ldap_first_entry(lc->ld,res);
294 if ( ldap_send_entry(be, op, lc, e, attrs, attrsonly)
300 } else if ( rc == LDAP_RES_SEARCH_REFERENCE ) {
301 char **references = NULL;
302 LDAPControl **ctrls = NULL;
306 rc = ldap_parse_reference( lc->ld, res,
307 &references, &ctrls, 1 );
309 if ( rc != LDAP_SUCCESS ) {
313 if ( references == NULL ) {
317 for ( cnt = 0; references[ cnt ]; cnt++ )
320 refs = ch_calloc( cnt + 1, sizeof( struct berval ) );
322 for ( cnt = 0; references[ cnt ]; cnt++ ) {
323 refs[ cnt ].bv_val = references[ cnt ];
324 refs[ cnt ].bv_len = strlen( references[ cnt ] );
327 /* ignore return value by now */
328 ( void )send_search_reference( be, conn, op,
329 NULL, refs, ctrls, &v2refs );
333 ldap_value_free( references );
338 ldap_controls_free( ctrls );
342 sres = ldap_result2error(lc->ld, res, 1);
343 sres = ldap_back_map_result(sres);
344 ldap_get_option(lc->ld, LDAP_OPT_ERROR_STRING, &err);
345 ldap_get_option(lc->ld, LDAP_OPT_MATCHED_DN, &match);
354 #ifdef ENABLE_REWRITE
356 * Rewrite the matched portion of the search base, if required
358 if ( match != NULL ) {
359 switch ( rewrite_session( li->rwinfo, "matchedDn",
360 match, conn, &mmatch ) ) {
361 case REWRITE_REGEXEC_OK:
362 if ( mmatch == NULL ) {
363 mmatch = ( char * )match;
366 LDAP_LOG( BACK_LDAP, DETAIL1,
367 "[rw] matchedDn:" " \"%s\" -> \"%s\"\n", match, mmatch, 0 );
368 #else /* !NEW_LOGGING */
369 Debug( LDAP_DEBUG_ARGS, "rw> matchedDn:"
370 " \"%s\" -> \"%s\"\n%s",
372 #endif /* !NEW_LOGGING */
375 case REWRITE_REGEXEC_UNWILLING:
377 case REWRITE_REGEXEC_ERR:
378 /* FIXME: no error, but no matched ... */
385 sres = LDAP_REFERRAL;
388 send_search_result( conn, op, sres,
389 mmatch, err, v2refs, NULL, count );
391 #else /* !ENABLE_REWRITE */
393 sres = LDAP_REFERRAL;
395 send_search_result( conn, op, sres,
396 match, err, v2refs, NULL, count );
397 #endif /* !ENABLE_REWRITE */
401 #ifdef ENABLE_REWRITE
402 if ( mmatch != match ) {
405 #endif /* ENABLE_REWRITE */
411 if ( mapped_attrs ) {
412 ch_free( mapped_attrs );
414 if ( mapped_filter != filterstr->bv_val ) {
415 ch_free( mapped_filter );
417 if ( mbase.bv_val != base->bv_val ) {
418 free( mbase.bv_val );
430 AttributeName *attrs,
434 struct ldapinfo *li = (struct ldapinfo *) be->be_private;
435 struct berval a, mapped;
437 BerElement ber = *e->lm_ber;
438 Attribute *attr, **attrp;
439 struct berval dummy = { 0, NULL };
440 struct berval *bv, bdn;
443 if ( ber_scanf( &ber, "{m{", &bdn ) == LBER_ERROR ) {
444 return LDAP_DECODING_ERROR;
446 #ifdef ENABLE_REWRITE
449 * Rewrite the dn of the result, if needed
451 switch ( rewrite_session( li->rwinfo, "searchResult",
452 bdn.bv_val, lc->conn, &ent.e_name.bv_val ) ) {
453 case REWRITE_REGEXEC_OK:
454 if ( ent.e_name.bv_val == NULL ) {
458 LDAP_LOG( BACK_LDAP, DETAIL1,
459 "[rw] searchResult: \"%s\"" " -> \"%s\"\n",
460 bdn.bv_val, ent.e_dn, 0 );
461 #else /* !NEW_LOGGING */
462 Debug( LDAP_DEBUG_ARGS, "rw> searchResult: \"%s\""
463 " -> \"%s\"\n%s", bdn.bv_val, ent.e_dn, "" );
464 #endif /* !NEW_LOGGING */
465 ent.e_name.bv_len = strlen( ent.e_name.bv_val );
469 case REWRITE_REGEXEC_ERR:
470 case REWRITE_REGEXEC_UNWILLING:
473 #else /* !ENABLE_REWRITE */
474 ldap_back_dn_massage( li, &bdn, &ent.e_name, 0, 0 );
475 #endif /* !ENABLE_REWRITE */
478 * Note: this may fail if the target host(s) schema differs
479 * from the one known to the meta, and a DN with unknown
480 * attributes is returned.
482 * FIXME: should we log anything, or delegate to dnNormalize2?
484 if ( dnNormalize2( NULL, &ent.e_name, &ent.e_nname ) != LDAP_SUCCESS ) {
485 return LDAP_INVALID_DN_SYNTAX;
491 attrp = &ent.e_attrs;
493 while ( ber_scanf( &ber, "{m", &a ) != LBER_ERROR ) {
494 ldap_back_map(&li->at_map, &a, &mapped, 1);
495 if (mapped.bv_val == NULL)
497 attr = (Attribute *)ch_malloc( sizeof(Attribute) );
503 if (slap_bv2ad(&mapped, &attr->a_desc, &text) != LDAP_SUCCESS) {
504 if (slap_bv2undef_ad(&mapped, &attr->a_desc, &text)
507 LDAP_LOG( BACK_LDAP, DETAIL1,
508 "slap_bv2undef_ad(%s): %s\n", mapped.bv_val, text, 0 );
509 #else /* !NEW_LOGGING */
510 Debug( LDAP_DEBUG_ANY,
511 "slap_bv2undef_ad(%s): "
512 "%s\n%s", mapped.bv_val, text, "" );
513 #endif /* !NEW_LOGGING */
519 /* no subschemaSubentry */
520 if ( attr->a_desc == slap_schema.si_ad_subschemaSubentry ) {
525 if ( ber_scanf( &ber, "[W]", &attr->a_vals ) == LBER_ERROR
526 || attr->a_vals == NULL ) {
528 * Note: attr->a_vals can be null when using
529 * values result filter
531 attr->a_vals = &dummy;
533 } else if ( attr->a_desc == slap_schema.si_ad_objectClass
534 || attr->a_desc == slap_schema.si_ad_structuralObjectClass ) {
537 for ( last = 0; attr->a_vals[last].bv_val; last++ ) ;
538 for ( i = 0, bv = attr->a_vals; bv->bv_val; bv++, i++ ) {
539 ldap_back_map(&li->oc_map, bv, &mapped, 1);
540 if (mapped.bv_val == NULL) {
541 LBER_FREE(bv->bv_val);
545 *bv = attr->a_vals[last];
546 attr->a_vals[last].bv_val = NULL;
548 } else if ( mapped.bv_val != bv->bv_val ) {
550 * FIXME: after LBER_FREEing
551 * the value is replaced by
554 LBER_FREE(bv->bv_val);
555 ber_dupbv( bv, &mapped );
560 * It is necessary to try to rewrite attributes with
561 * dn syntax because they might be used in ACLs as
562 * members of groups; since ACLs are applied to the
563 * rewritten stuff, no dn-based subject clause could
564 * be used at the ldap backend side (see
565 * http://www.OpenLDAP.org/faq/data/cache/452.html)
566 * The problem can be overcome by moving the dn-based
567 * ACLs to the target directory server, and letting
568 * everything pass thru the ldap backend.
570 } else if ( strcmp( attr->a_desc->ad_type->sat_syntax->ssyn_oid,
571 SLAPD_DN_SYNTAX ) == 0 ) {
573 for ( i = 0, bv = attr->a_vals; bv->bv_val; bv++, i++ ) {
574 struct berval newval;
576 #ifdef ENABLE_REWRITE
577 switch ( rewrite_session( li->rwinfo,
582 case REWRITE_REGEXEC_OK:
584 if ( newval.bv_val == NULL ) {
587 newval.bv_len = strlen( newval.bv_val );
589 LDAP_LOG( BACK_LDAP, DETAIL1,
590 "[rw] searchResult on attr=%s: \"%s\" -> \"%s\"\n",
591 attr->a_desc->ad_type->sat_cname.bv_val,
592 bv->bv_val, newval.bv_val );
593 #else /* !NEW_LOGGING */
594 Debug( LDAP_DEBUG_ARGS,
595 "rw> searchResult on attr=%s: \"%s\" -> \"%s\"\n",
596 attr->a_desc->ad_type->sat_cname.bv_val,
597 bv->bv_val, newval.bv_val );
598 #endif /* !NEW_LOGGING */
603 case REWRITE_REGEXEC_UNWILLING:
605 case REWRITE_REGEXEC_ERR:
607 * FIXME: better give up,
609 * or leave it untouched?
613 #else /* !ENABLE_REWRITE */
614 ldap_back_dn_massage( li, bv, &newval, 0, 0 );
616 #endif /* !ENABLE_REWRITE */
621 attrp = &attr->a_next;
623 send_search_entry( be, lc->conn, op, &ent, attrs, attrsonly, NULL );
624 while (ent.e_attrs) {
626 ent.e_attrs = attr->a_next;
627 if (attr->a_vals != &dummy)
628 ber_bvarray_free(attr->a_vals);
632 if ( ent.e_dn && ( ent.e_dn != bdn.bv_val ) )