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Patrick Welche <prlw1@cam.ac.uk>
[netbsd-mini2440.git] / external / bsd / openldap / dist / servers / slapd / backend.c
blob8304d3f628bb28df77fe9b5ed2cca0aac88626b8
1 /* backend.c - routines for dealing with back-end databases */
2 /* $OpenLDAP: pkg/ldap/servers/slapd/backend.c,v 1.362.2.17 2008/04/24 08:13:39 hyc Exp $ */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 *
5 * Copyright 1998-2008 The OpenLDAP Foundation.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted only as authorized by the OpenLDAP
10 * Public License.
11 *
12 * A copy of this license is available in the file LICENSE in the
13 * top-level directory of the distribution or, alternatively, at
14 * <http://www.OpenLDAP.org/license.html>.
15 */
16 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
17 * All rights reserved.
18 *
19 * Redistribution and use in source and binary forms are permitted
20 * provided that this notice is preserved and that due credit is given
21 * to the University of Michigan at Ann Arbor. The name of the University
22 * may not be used to endorse or promote products derived from this
23 * software without specific prior written permission. This software
24 * is provided ``as is'' without express or implied warranty.
25 */
26
27
28 #include "portable.h"
29
30 #include <stdio.h>
31
32 #include <ac/string.h>
33 #include <ac/socket.h>
34 #include <sys/stat.h>
35
36 #include "slap.h"
37 #include "config.h"
38 #include "lutil.h"
39 #include "lber_pvt.h"
40
41 /*
42 * If a module is configured as dynamic, its header should not
43 * get included into slapd. While this is a general rule and does
44 * not have much of an effect in UNIX, this rule should be adhered
45 * to for Windows, where dynamic object code should not be implicitly
46 * imported into slapd without appropriate __declspec(dllimport) directives.
47 */
48
49 int nBackendInfo = 0;
50 slap_bi_head backendInfo = LDAP_STAILQ_HEAD_INITIALIZER(backendInfo);
51
52 int nBackendDB = 0;
53 slap_be_head backendDB = LDAP_STAILQ_HEAD_INITIALIZER(backendDB);
54
55 static int
56 backend_init_controls( BackendInfo *bi )
57 {
58 if ( bi->bi_controls ) {
59 int i;
60
61 for ( i = 0; bi->bi_controls[ i ]; i++ ) {
62 int cid;
63
64 if ( slap_find_control_id( bi->bi_controls[ i ], &cid )
65 == LDAP_CONTROL_NOT_FOUND )
66 {
67 if ( !( slapMode & SLAP_TOOL_MODE ) ) {
68 assert( 0 );
69 }
70
71 return -1;
72 }
73
74 bi->bi_ctrls[ cid ] = 1;
75 }
76 }
77
78 return 0;
79 }
80
81 int backend_init(void)
82 {
83 int rc = -1;
84 BackendInfo *bi;
85
86 if((nBackendInfo != 0) || !LDAP_STAILQ_EMPTY(&backendInfo)) {
87 /* already initialized */
88 Debug( LDAP_DEBUG_ANY,
89 "backend_init: already initialized\n", 0, 0, 0 );
90 return -1;
91 }
92
93 for( bi=slap_binfo; bi->bi_type != NULL; bi++,nBackendInfo++ ) {
94 assert( bi->bi_init != 0 );
95
96 rc = bi->bi_init( bi );
97
98 if(rc != 0) {
99 Debug( LDAP_DEBUG_ANY,
100 "backend_init: initialized for type \"%s\"\n",
101 bi->bi_type, 0, 0 );
102 /* destroy those we've already inited */
103 for( nBackendInfo--;
104 nBackendInfo >= 0 ;
105 nBackendInfo-- )
106 {
107 if ( slap_binfo[nBackendInfo].bi_destroy ) {
108 slap_binfo[nBackendInfo].bi_destroy(
109 &slap_binfo[nBackendInfo] );
110 }
111 }
112 return rc;
113 }
114
115 LDAP_STAILQ_INSERT_TAIL(&backendInfo, bi, bi_next);
116 }
117
118 if ( nBackendInfo > 0) {
119 return 0;
120 }
121
122 #ifdef SLAPD_MODULES
123 return 0;
124 #else
125
126 Debug( LDAP_DEBUG_ANY,
127 "backend_init: failed\n",
128 0, 0, 0 );
129
130 return rc;
131 #endif /* SLAPD_MODULES */
132 }
133
134 int backend_add(BackendInfo *aBackendInfo)
135 {
136 int rc = 0;
137
138 if ( aBackendInfo->bi_init == NULL ) {
139 Debug( LDAP_DEBUG_ANY, "backend_add: "
140 "backend type \"%s\" does not have the (mandatory)init function\n",
141 aBackendInfo->bi_type, 0, 0 );
142 return -1;
143 }
144
145 rc = aBackendInfo->bi_init(aBackendInfo);
146 if ( rc != 0) {
147 Debug( LDAP_DEBUG_ANY,
148 "backend_add: initialization for type \"%s\" failed\n",
149 aBackendInfo->bi_type, 0, 0 );
150 return rc;
151 }
152
153 (void)backend_init_controls( aBackendInfo );
154
155 /* now add the backend type to the Backend Info List */
156 LDAP_STAILQ_INSERT_TAIL( &backendInfo, aBackendInfo, bi_next );
157 nBackendInfo++;
158 return 0;
159 }
160
161 static int
162 backend_set_controls( BackendDB *be )
163 {
164 BackendInfo *bi = be->bd_info;
165
166 /* back-relay takes care of itself; so may do other */
167 if ( overlay_is_over( be ) ) {
168 bi = ((slap_overinfo *)be->bd_info->bi_private)->oi_orig;
169 }
170
171 if ( bi->bi_controls ) {
172 if ( be->be_ctrls[ SLAP_MAX_CIDS ] == 0 ) {
173 AC_MEMCPY( be->be_ctrls, bi->bi_ctrls,
174 sizeof( be->be_ctrls ) );
175 be->be_ctrls[ SLAP_MAX_CIDS ] = 1;
176
177 } else {
178 int i;
179
180 for ( i = 0; i < SLAP_MAX_CIDS; i++ ) {
181 if ( bi->bi_ctrls[ i ] ) {
182 be->be_ctrls[ i ] = bi->bi_ctrls[ i ];
183 }
184 }
185 }
186
187 }
188
189 return 0;
190 }
191
192 /* startup a specific backend database */
193 int backend_startup_one(Backend *be, ConfigReply *cr)
194 {
195 int rc = 0;
196
197 assert( be != NULL );
198
199 be->be_pending_csn_list = (struct be_pcl *)
200 ch_calloc( 1, sizeof( struct be_pcl ) );
201
202 LDAP_TAILQ_INIT( be->be_pending_csn_list );
203
204 Debug( LDAP_DEBUG_TRACE,
205 "backend_startup_one: starting \"%s\"\n",
206 be->be_suffix ? be->be_suffix[0].bv_val : "(unknown)",
207 0, 0 );
208
209 /* set database controls */
210 (void)backend_set_controls( be );
211
212 #if 0
213 if ( !BER_BVISEMPTY( &be->be_rootndn )
214 && select_backend( &be->be_rootndn, 0 ) == be
215 && BER_BVISNULL( &be->be_rootpw ) )
216 {
217 /* warning: if rootdn entry is created,
218 * it can take rootdn privileges;
219 * set empty rootpw to prevent */
220 }
221 #endif
222
223 if ( be->bd_info->bi_db_open ) {
224 rc = be->bd_info->bi_db_open( be, cr );
225 if ( rc == 0 ) {
226 (void)backend_set_controls( be );
227
228 } else {
229 Debug( LDAP_DEBUG_ANY,
230 "backend_startup_one: bi_db_open failed! (%d)\n",
231 rc, 0, 0 );
232 }
233 }
234
235 return rc;
236 }
237
238 int backend_startup(Backend *be)
239 {
240 int i;
241 int rc = 0;
242 BackendInfo *bi;
243 ConfigReply cr={0, ""};
244
245 if( ! ( nBackendDB > 0 ) ) {
246 /* no databases */
247 Debug( LDAP_DEBUG_ANY,
248 "backend_startup: %d databases to startup.\n",
249 nBackendDB, 0, 0 );
250 return 1;
251 }
252
253 if(be != NULL) {
254 if ( be->bd_info->bi_open ) {
255 rc = be->bd_info->bi_open( be->bd_info );
256 if ( rc != 0 ) {
257 Debug( LDAP_DEBUG_ANY,
258 "backend_startup: bi_open failed!\n",
259 0, 0, 0 );
260
261 return rc;
262 }
263 }
264 /* append global access controls */
265 acl_append( &be->be_acl, frontendDB->be_acl, -1 );
266
267 return backend_startup_one( be, &cr );
268 }
269
270 /* open frontend, if required */
271 if ( frontendDB->bd_info->bi_db_open ) {
272 rc = frontendDB->bd_info->bi_db_open( frontendDB, &cr );
273 if ( rc != 0 ) {
274 Debug( LDAP_DEBUG_ANY,
275 "backend_startup: bi_db_open(frontend) failed! (%d)\n",
276 rc, 0, 0 );
277 return rc;
278 }
279 }
280
281 /* open each backend type */
282 i = -1;
283 LDAP_STAILQ_FOREACH(bi, &backendInfo, bi_next) {
284 i++;
285 if( bi->bi_nDB == 0) {
286 /* no database of this type, don't open */
287 continue;
288 }
289
290 if( bi->bi_open ) {
291 rc = bi->bi_open( bi );
292 if ( rc != 0 ) {
293 Debug( LDAP_DEBUG_ANY,
294 "backend_startup: bi_open %d (%s) failed!\n",
295 i, bi->bi_type, 0 );
296 return rc;
297 }
298 }
299
300 (void)backend_init_controls( bi );
301 }
302
303 /* open each backend database */
304 i = -1;
305 LDAP_STAILQ_FOREACH(be, &backendDB, be_next) {
306 i++;
307 if ( be->be_suffix == NULL ) {
308 Debug( LDAP_DEBUG_ANY,
309 "backend_startup: warning, database %d (%s) "
310 "has no suffix\n",
311 i, be->bd_info->bi_type, 0 );
312 }
313 /* append global access controls */
314 acl_append( &be->be_acl, frontendDB->be_acl, -1 );
315
316 rc = backend_startup_one( be, &cr );
317
318 if ( rc ) return rc;
319 }
320
321 return rc;
322 }
323
324 int backend_num( Backend *be )
325 {
326 int i = 0;
327 BackendDB *b2;
328
329 if( be == NULL ) return -1;
330
331 LDAP_STAILQ_FOREACH( b2, &backendDB, be_next ) {
332 if( be == b2 ) return i;
333 i++;
334 }
335 return -1;
336 }
337
338 int backend_shutdown( Backend *be )
339 {
340 int rc = 0;
341 BackendInfo *bi;
342
343 if( be != NULL ) {
344 /* shutdown a specific backend database */
345
346 if ( be->bd_info->bi_nDB == 0 ) {
347 /* no database of this type, we never opened it */
348 return 0;
349 }
350
351 if ( be->bd_info->bi_db_close ) {
352 be->bd_info->bi_db_close( be, NULL );
353 }
354
355 if( be->bd_info->bi_close ) {
356 be->bd_info->bi_close( be->bd_info );
357 }
358
359 return 0;
360 }
361
362 /* close each backend database */
363 LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
364 if ( be->bd_info->bi_db_close ) {
365 be->bd_info->bi_db_close( be, NULL );
366 }
367
368 if(rc != 0) {
369 Debug( LDAP_DEBUG_ANY,
370 "backend_close: bi_db_close %s failed!\n",
371 be->be_type, 0, 0 );
372 }
373 }
374
375 /* close each backend type */
376 LDAP_STAILQ_FOREACH( bi, &backendInfo, bi_next ) {
377 if( bi->bi_nDB == 0 ) {
378 /* no database of this type */
379 continue;
380 }
381
382 if( bi->bi_close ) {
383 bi->bi_close( bi );
384 }
385 }
386
387 /* close frontend, if required */
388 if ( frontendDB->bd_info->bi_db_close ) {
389 rc = frontendDB->bd_info->bi_db_close ( frontendDB, NULL );
390 if ( rc != 0 ) {
391 Debug( LDAP_DEBUG_ANY,
392 "backend_startup: bi_db_close(frontend) failed! (%d)\n",
393 rc, 0, 0 );
394 }
395 }
396
397 return 0;
398 }
399
400 /*
401 * This function is supposed to be the exact counterpart
402 * of backend_startup_one(), although this one calls bi_db_destroy()
403 * while backend_startup_one() calls bi_db_open().
404 *
405 * Make sure backend_stopdown_one() destroys resources allocated
406 * by backend_startup_one(); only call backend_destroy_one() when
407 * all stuff in a BackendDB needs to be destroyed
408 */
409 void
410 backend_stopdown_one( BackendDB *bd )
411 {
412 if ( bd->be_pending_csn_list ) {
413 struct slap_csn_entry *csne;
414 csne = LDAP_TAILQ_FIRST( bd->be_pending_csn_list );
415 while ( csne ) {
416 struct slap_csn_entry *tmp_csne = csne;
417
418 LDAP_TAILQ_REMOVE( bd->be_pending_csn_list, csne, ce_csn_link );
419 ch_free( csne->ce_csn.bv_val );
420 csne = LDAP_TAILQ_NEXT( csne, ce_csn_link );
421 ch_free( tmp_csne );
422 }
423 ch_free( bd->be_pending_csn_list );
424 }
425
426 if ( bd->bd_info->bi_db_destroy ) {
427 bd->bd_info->bi_db_destroy( bd, NULL );
428 }
429 }
430
431 void backend_destroy_one( BackendDB *bd, int dynamic )
432 {
433 if ( dynamic ) {
434 LDAP_STAILQ_REMOVE(&backendDB, bd, BackendDB, be_next );
435 }
436
437 if ( bd->be_syncinfo ) {
438 syncinfo_free( bd->be_syncinfo, 1 );
439 }
440
441 backend_stopdown_one( bd );
442
443 ber_bvarray_free( bd->be_suffix );
444 ber_bvarray_free( bd->be_nsuffix );
445 if ( !BER_BVISNULL( &bd->be_rootdn ) ) {
446 free( bd->be_rootdn.bv_val );
447 }
448 if ( !BER_BVISNULL( &bd->be_rootndn ) ) {
449 free( bd->be_rootndn.bv_val );
450 }
451 if ( !BER_BVISNULL( &bd->be_rootpw ) ) {
452 free( bd->be_rootpw.bv_val );
453 }
454 acl_destroy( bd->be_acl, frontendDB->be_acl );
455 limits_destroy( bd->be_limits );
456 if ( !BER_BVISNULL( &bd->be_update_ndn ) ) {
457 ch_free( bd->be_update_ndn.bv_val );
458 }
459 if ( bd->be_update_refs ) {
460 ber_bvarray_free( bd->be_update_refs );
461 }
462
463 if ( dynamic ) {
464 free( bd );
465 }
466 }
467
468 int backend_destroy(void)
469 {
470 BackendDB *bd;
471 BackendInfo *bi;
472
473 /* destroy each backend database */
474 while (( bd = LDAP_STAILQ_FIRST(&backendDB))) {
475 backend_destroy_one( bd, 1 );
476 }
477
478 /* destroy each backend type */
479 LDAP_STAILQ_FOREACH( bi, &backendInfo, bi_next ) {
480 if( bi->bi_destroy ) {
481 bi->bi_destroy( bi );
482 }
483 }
484
485 nBackendInfo = 0;
486 LDAP_STAILQ_INIT(&backendInfo);
487
488 /* destroy frontend database */
489 bd = frontendDB;
490 if ( bd ) {
491 if ( bd->bd_info->bi_db_destroy ) {
492 bd->bd_info->bi_db_destroy( bd, NULL );
493 }
494 ber_bvarray_free( bd->be_suffix );
495 ber_bvarray_free( bd->be_nsuffix );
496 if ( !BER_BVISNULL( &bd->be_rootdn ) ) {
497 free( bd->be_rootdn.bv_val );
498 }
499 if ( !BER_BVISNULL( &bd->be_rootndn ) ) {
500 free( bd->be_rootndn.bv_val );
501 }
502 if ( !BER_BVISNULL( &bd->be_rootpw ) ) {
503 free( bd->be_rootpw.bv_val );
504 }
505 acl_destroy( bd->be_acl, frontendDB->be_acl );
506 }
507
508 return 0;
509 }
510
511 BackendInfo* backend_info(const char *type)
512 {
513 BackendInfo *bi;
514
515 /* search for the backend type */
516 LDAP_STAILQ_FOREACH(bi,&backendInfo,bi_next) {
517 if( strcasecmp(bi->bi_type, type) == 0 ) {
518 return bi;
519 }
520 }
521
522 return NULL;
523 }
524
525 void
526 backend_db_insert(
527 BackendDB *be,
528 int idx
529 )
530 {
531 /* If idx < 0, just add to end of list */
532 if ( idx < 0 ) {
533 LDAP_STAILQ_INSERT_TAIL(&backendDB, be, be_next);
534 } else if ( idx == 0 ) {
535 LDAP_STAILQ_INSERT_HEAD(&backendDB, be, be_next);
536 } else {
537 int i;
538 BackendDB *b2;
539
540 b2 = LDAP_STAILQ_FIRST(&backendDB);
541 idx--;
542 for (i=0; i<idx; i++) {
543 b2 = LDAP_STAILQ_NEXT(b2, be_next);
544 }
545 LDAP_STAILQ_INSERT_AFTER(&backendDB, b2, be, be_next);
546 }
547 }
548
549 void
550 backend_db_move(
551 BackendDB *be,
552 int idx
553 )
554 {
555 LDAP_STAILQ_REMOVE(&backendDB, be, BackendDB, be_next);
556 backend_db_insert(be, idx);
557 }
558
559 BackendDB *
560 backend_db_init(
561 const char *type,
562 BackendDB *b0,
563 int idx,
564 ConfigReply *cr)
565 {
566 BackendInfo *bi = backend_info(type);
567 BackendDB *be = b0;
568 int rc = 0;
569
570 if( bi == NULL ) {
571 fprintf( stderr, "Unrecognized database type (%s)\n", type );
572 return NULL;
573 }
574
575 /* If be is provided, treat it as private. Otherwise allocate
576 * one and add it to the global list.
577 */
578 if ( !be ) {
579 be = ch_calloc( 1, sizeof(Backend) );
580 /* Just append */
581 if ( idx >= nbackends )
582 idx = -1;
583 nbackends++;
584 backend_db_insert( be, idx );
585 }
586
587 be->bd_info = bi;
588 be->bd_self = be;
589
590 be->be_def_limit = frontendDB->be_def_limit;
591 be->be_dfltaccess = frontendDB->be_dfltaccess;
592
593 be->be_restrictops = frontendDB->be_restrictops;
594 be->be_requires = frontendDB->be_requires;
595 be->be_ssf_set = frontendDB->be_ssf_set;
596
597 be->be_pcl_mutexp = &be->be_pcl_mutex;
598 ldap_pvt_thread_mutex_init( be->be_pcl_mutexp );
599
600 /* assign a default depth limit for alias deref */
601 be->be_max_deref_depth = SLAPD_DEFAULT_MAXDEREFDEPTH;
602
603 if ( bi->bi_db_init ) {
604 rc = bi->bi_db_init( be, cr );
605 }
606
607 if ( rc != 0 ) {
608 fprintf( stderr, "database init failed (%s)\n", type );
609 /* If we created and linked this be, remove it and free it */
610 if ( !b0 ) {
611 LDAP_STAILQ_REMOVE(&backendDB, be, BackendDB, be_next);
612 ch_free( be );
613 be = NULL;
614 nbackends--;
615 }
616 } else {
617 bi->bi_nDB++;
618 }
619 return( be );
620 }
621
622 void
623 be_db_close( void )
624 {
625 BackendDB *be;
626
627 LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
628 if ( be->bd_info->bi_db_close ) {
629 be->bd_info->bi_db_close( be, NULL );
630 }
631 }
632
633 if ( frontendDB->bd_info->bi_db_close ) {
634 frontendDB->bd_info->bi_db_close( frontendDB, NULL );
635 }
636
637 }
638
639 Backend *
640 select_backend(
641 struct berval * dn,
642 int noSubs )
643 {
644 int j;
645 ber_len_t len, dnlen = dn->bv_len;
646 Backend *be;
647
648 LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
649 if ( be->be_nsuffix == NULL || SLAP_DBHIDDEN( be )) {
650 continue;
651 }
652
653 for ( j = 0; !BER_BVISNULL( &be->be_nsuffix[j] ); j++ )
654 {
655 if ( ( SLAP_GLUE_SUBORDINATE( be ) ) && noSubs )
656 {
657 continue;
658 }
659
660 len = be->be_nsuffix[j].bv_len;
661
662 if ( len > dnlen ) {
663 /* suffix is longer than DN */
664 continue;
665 }
666
667 /*
668 * input DN is normalized, so the separator check
669 * need not look at escaping
670 */
671 if ( len && len < dnlen &&
672 !DN_SEPARATOR( dn->bv_val[(dnlen-len)-1] ))
673 {
674 continue;
675 }
676
677 if ( strcmp( be->be_nsuffix[j].bv_val,
678 &dn->bv_val[dnlen-len] ) == 0 )
679 {
680 return be;
681 }
682 }
683 }
684
685 return be;
686 }
687
688 int
689 be_issuffix(
690 Backend *be,
691 struct berval *bvsuffix )
692 {
693 int i;
694
695 if ( be->be_nsuffix == NULL ) {
696 return 0;
697 }
698
699 for ( i = 0; !BER_BVISNULL( &be->be_nsuffix[i] ); i++ ) {
700 if ( bvmatch( &be->be_nsuffix[i], bvsuffix ) ) {
701 return 1;
702 }
703 }
704
705 return 0;
706 }
707
708 int
709 be_issubordinate(
710 Backend *be,
711 struct berval *bvsubordinate )
712 {
713 int i;
714
715 if ( be->be_nsuffix == NULL ) {
716 return 0;
717 }
718
719 for ( i = 0; !BER_BVISNULL( &be->be_nsuffix[i] ); i++ ) {
720 if ( dnIsSuffix( bvsubordinate, &be->be_nsuffix[i] ) ) {
721 return 1;
722 }
723 }
724
725 return 0;
726 }
727
728 int
729 be_isroot_dn( Backend *be, struct berval *ndn )
730 {
731 if ( BER_BVISEMPTY( ndn ) || BER_BVISEMPTY( &be->be_rootndn ) ) {
732 return 0;
733 }
734
735 return dn_match( &be->be_rootndn, ndn );
736 }
737
738 int
739 be_slurp_update( Operation *op )
740 {
741 return ( SLAP_SLURP_SHADOW( op->o_bd ) &&
742 be_isupdate_dn( op->o_bd, &op->o_ndn ) );
743 }
744
745 int
746 be_shadow_update( Operation *op )
747 {
748 /* This assumes that all internal ops (connid == -1) on a syncrepl
749 * database are syncrepl operations.
750 */
751 return (( SLAP_SYNC_SHADOW( op->o_bd ) && op->o_connid == -1 ) ||
752 ( SLAP_SHADOW( op->o_bd ) && be_isupdate_dn( op->o_bd, &op->o_ndn ) ) );
753 }
754
755 int
756 be_isupdate_dn( Backend *be, struct berval *ndn )
757 {
758 if ( BER_BVISEMPTY( ndn ) || BER_BVISEMPTY( &be->be_update_ndn ) ) {
759 return 0;
760 }
761
762 return dn_match( &be->be_update_ndn, ndn );
763 }
764
765 struct berval *
766 be_root_dn( Backend *be )
767 {
768 return &be->be_rootdn;
769 }
770
771 int
772 be_isroot( Operation *op )
773 {
774 return be_isroot_dn( op->o_bd, &op->o_ndn );
775 }
776
777 int
778 be_isroot_pw( Operation *op )
779 {
780 return be_rootdn_bind( op, NULL ) == LDAP_SUCCESS;
781 }
782
783 /*
784 * checks if binding as rootdn
785 *
786 * return value:
787 * SLAP_CB_CONTINUE if not the rootdn, or if rootpw is null
788 * LDAP_SUCCESS if rootdn & rootpw
789 * LDAP_INVALID_CREDENTIALS if rootdn & !rootpw
790 *
791 * if rs != NULL
792 * if LDAP_SUCCESS, op->orb_edn is set
793 * if LDAP_INVALID_CREDENTIALS, response is sent to client
794 */
795 int
796 be_rootdn_bind( Operation *op, SlapReply *rs )
797 {
798 int rc;
799 #ifdef SLAPD_SPASSWD
800 void *old_authctx = NULL;
801 #endif
802
803 assert( op->o_tag == LDAP_REQ_BIND );
804 assert( op->orb_method == LDAP_AUTH_SIMPLE );
805
806 if ( !be_isroot_dn( op->o_bd, &op->o_req_ndn ) ) {
807 return SLAP_CB_CONTINUE;
808 }
809
810 if ( BER_BVISNULL( &op->o_bd->be_rootpw ) ) {
811 /* give the database a chance */
812 return SLAP_CB_CONTINUE;
813 }
814
815 if ( BER_BVISEMPTY( &op->o_bd->be_rootpw ) ) {
816 /* rootdn bind explicitly disallowed */
817 rc = LDAP_INVALID_CREDENTIALS;
818 if ( rs ) {
819 goto send_result;
820 }
821
822 return rc;
823 }
824
825 #ifdef SLAPD_SPASSWD
826 ldap_pvt_thread_pool_setkey( op->o_threadctx, (void *)slap_sasl_bind,
827 op->o_conn->c_sasl_authctx, 0, &old_authctx, NULL );
828 #endif
829
830 rc = lutil_passwd( &op->o_bd->be_rootpw, &op->orb_cred, NULL, NULL );
831
832 #ifdef SLAPD_SPASSWD
833 ldap_pvt_thread_pool_setkey( op->o_threadctx, (void *)slap_sasl_bind,
834 old_authctx, 0, NULL, NULL );
835 #endif
836
837 rc = ( rc == 0 ? LDAP_SUCCESS : LDAP_INVALID_CREDENTIALS );
838 if ( rs ) {
839 send_result:;
840 rs->sr_err = rc;
841
842 Debug( LDAP_DEBUG_TRACE, "%s: rootdn=\"%s\" bind%s\n",
843 op->o_log_prefix, op->o_bd->be_rootdn.bv_val,
844 rc == LDAP_SUCCESS ? " succeeded" : " failed" );
845
846 if ( rc == LDAP_SUCCESS ) {
847 /* Set to the pretty rootdn */
848 ber_dupbv( &op->orb_edn, &op->o_bd->be_rootdn );
849
850 } else {
851 send_ldap_result( op, rs );
852 }
853 }
854
855 return rc;
856 }
857
858 int
859 be_entry_release_rw(
860 Operation *op,
861 Entry *e,
862 int rw )
863 {
864 if ( op->o_bd->be_release ) {
865 /* free and release entry from backend */
866 return op->o_bd->be_release( op, e, rw );
867 } else {
868 /* free entry */
869 entry_free( e );
870 return 0;
871 }
872 }
873
874 int
875 backend_unbind( Operation *op, SlapReply *rs )
876 {
877 BackendDB *be;
878
879 LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
880 if ( be->be_unbind ) {
881 op->o_bd = be;
882 be->be_unbind( op, rs );
883 }
884 }
885
886 return 0;
887 }
888
889 int
890 backend_connection_init(
891 Connection *conn )
892 {
893 BackendDB *be;
894
895 LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
896 if ( be->be_connection_init ) {
897 be->be_connection_init( be, conn );
898 }
899 }
900
901 return 0;
902 }
903
904 int
905 backend_connection_destroy(
906 Connection *conn )
907 {
908 BackendDB *be;
909
910 LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
911 if ( be->be_connection_destroy ) {
912 be->be_connection_destroy( be, conn);
913 }
914 }
915
916 return 0;
917 }
918
919 int
920 backend_check_controls(
921 Operation *op,
922 SlapReply *rs )
923 {
924 LDAPControl **ctrls = op->o_ctrls;
925 rs->sr_err = LDAP_SUCCESS;
926
927 if( ctrls ) {
928 for( ; *ctrls != NULL ; ctrls++ ) {
929 int cid;
930
931 switch ( slap_global_control( op, (*ctrls)->ldctl_oid, &cid ) ) {
932 case LDAP_CONTROL_NOT_FOUND:
933 /* unrecognized control */
934 if ( (*ctrls)->ldctl_iscritical ) {
935 /* should not be reachable */
936 Debug( LDAP_DEBUG_ANY, "backend_check_controls: "
937 "unrecognized critical control: %s\n",
938 (*ctrls)->ldctl_oid, 0, 0 );
939 assert( 0 );
940 } else {
941 Debug( LDAP_DEBUG_TRACE, "backend_check_controls: "
942 "unrecognized non-critical control: %s\n",
943 (*ctrls)->ldctl_oid, 0, 0 );
944 }
945 break;
946
947 case LDAP_COMPARE_FALSE:
948 if ( !op->o_bd->be_ctrls[cid] && (*ctrls)->ldctl_iscritical ) {
949 /* RFC 4511 allows unavailableCriticalExtension to be
950 * returned when the server is unwilling to perform
951 * an operation extended by a recognized critical
952 * control.
953 */
954 rs->sr_text = "critical control unavailable in context";
955 rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
956 goto done;
957 }
958 break;
959
960 case LDAP_COMPARE_TRUE:
961 break;
962
963 default:
964 /* unreachable */
965 Debug( LDAP_DEBUG_ANY,
966 "backend_check_controls: unable to check control: %s\n",
967 (*ctrls)->ldctl_oid, 0, 0 );
968 assert( 0 );
969
970 rs->sr_text = "unable to check control";
971 rs->sr_err = LDAP_OTHER;
972 goto done;
973 }
974 }
975 }
976
977 #if 0 /* temporarily removed */
978 /* check should be generalized */
979 if( get_relax(op) && !be_isroot(op)) {
980 rs->sr_text = "requires manager authorization";
981 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
982 }
983 #endif
984
985 done:;
986 return rs->sr_err;
987 }
988
989 int
990 backend_check_restrictions(
991 Operation *op,
992 SlapReply *rs,
993 struct berval *opdata )
994 {
995 slap_mask_t restrictops;
996 slap_mask_t requires;
997 slap_mask_t opflag;
998 slap_mask_t exopflag = 0;
999 slap_ssf_set_t *ssf;
1000 int updateop = 0;
1001 int starttls = 0;
1002 int session = 0;
1003
1004 if ( op->o_bd ) {
1005 int rc = SLAP_CB_CONTINUE;
1006
1007 if ( op->o_bd->be_chk_controls ) {
1008 rc = ( *op->o_bd->be_chk_controls )( op, rs );
1009 }
1010
1011 if ( rc == SLAP_CB_CONTINUE ) {
1012 rc = backend_check_controls( op, rs );
1013 }
1014
1015 if ( rc != LDAP_SUCCESS ) {
1016 return rs->sr_err;
1017 }
1018
1019 restrictops = op->o_bd->be_restrictops;
1020 requires = op->o_bd->be_requires;
1021 ssf = &op->o_bd->be_ssf_set;
1022
1023 } else {
1024 restrictops = frontendDB->be_restrictops;
1025 requires = frontendDB->be_requires;
1026 ssf = &frontendDB->be_ssf_set;
1027 }
1028
1029 switch( op->o_tag ) {
1030 case LDAP_REQ_ADD:
1031 opflag = SLAP_RESTRICT_OP_ADD;
1032 updateop++;
1033 break;
1034 case LDAP_REQ_BIND:
1035 opflag = SLAP_RESTRICT_OP_BIND;
1036 session++;
1037 break;
1038 case LDAP_REQ_COMPARE:
1039 opflag = SLAP_RESTRICT_OP_COMPARE;
1040 break;
1041 case LDAP_REQ_DELETE:
1042 updateop++;
1043 opflag = SLAP_RESTRICT_OP_DELETE;
1044 break;
1045 case LDAP_REQ_EXTENDED:
1046 opflag = SLAP_RESTRICT_OP_EXTENDED;
1047
1048 if( !opdata ) {
1049 /* treat unspecified as a modify */
1050 opflag = SLAP_RESTRICT_OP_MODIFY;
1051 updateop++;
1052 break;
1053 }
1054
1055 if( bvmatch( opdata, &slap_EXOP_START_TLS ) ) {
1056 session++;
1057 starttls++;
1058 exopflag = SLAP_RESTRICT_EXOP_START_TLS;
1059 break;
1060 }
1061
1062 if( bvmatch( opdata, &slap_EXOP_WHOAMI ) ) {
1063 exopflag = SLAP_RESTRICT_EXOP_WHOAMI;
1064 break;
1065 }
1066
1067 if ( bvmatch( opdata, &slap_EXOP_CANCEL ) ) {
1068 exopflag = SLAP_RESTRICT_EXOP_CANCEL;
1069 break;
1070 }
1071
1072 if ( bvmatch( opdata, &slap_EXOP_MODIFY_PASSWD ) ) {
1073 exopflag = SLAP_RESTRICT_EXOP_MODIFY_PASSWD;
1074 updateop++;
1075 break;
1076 }
1077
1078 /* treat everything else as a modify */
1079 opflag = SLAP_RESTRICT_OP_MODIFY;
1080 updateop++;
1081 break;
1082
1083 case LDAP_REQ_MODIFY:
1084 updateop++;
1085 opflag = SLAP_RESTRICT_OP_MODIFY;
1086 break;
1087 case LDAP_REQ_RENAME:
1088 updateop++;
1089 opflag = SLAP_RESTRICT_OP_RENAME;
1090 break;
1091 case LDAP_REQ_SEARCH:
1092 opflag = SLAP_RESTRICT_OP_SEARCH;
1093 break;
1094 case LDAP_REQ_UNBIND:
1095 session++;
1096 opflag = 0;
1097 break;
1098 default:
1099 rs->sr_text = "restrict operations internal error";
1100 rs->sr_err = LDAP_OTHER;
1101 return rs->sr_err;
1102 }
1103
1104 if ( !starttls ) {
1105 /* these checks don't apply to StartTLS */
1106
1107 rs->sr_err = LDAP_CONFIDENTIALITY_REQUIRED;
1108 if( op->o_transport_ssf < ssf->sss_transport ) {
1109 rs->sr_text = op->o_transport_ssf
1110 ? "stronger transport confidentiality required"
1111 : "transport confidentiality required";
1112 return rs->sr_err;
1113 }
1114
1115 if( op->o_tls_ssf < ssf->sss_tls ) {
1116 rs->sr_text = op->o_tls_ssf
1117 ? "stronger TLS confidentiality required"
1118 : "TLS confidentiality required";
1119 return rs->sr_err;
1120 }
1121
1122
1123 if( op->o_tag == LDAP_REQ_BIND && opdata == NULL ) {
1124 /* simple bind specific check */
1125 if( op->o_ssf < ssf->sss_simple_bind ) {
1126 rs->sr_text = op->o_ssf
1127 ? "stronger confidentiality required"
1128 : "confidentiality required";
1129 return rs->sr_err;
1130 }
1131 }
1132
1133 if( op->o_tag != LDAP_REQ_BIND || opdata == NULL ) {
1134 /* these checks don't apply to SASL bind */
1135
1136 if( op->o_sasl_ssf < ssf->sss_sasl ) {
1137 rs->sr_text = op->o_sasl_ssf
1138 ? "stronger SASL confidentiality required"
1139 : "SASL confidentiality required";
1140 return rs->sr_err;
1141 }
1142
1143 if( op->o_ssf < ssf->sss_ssf ) {
1144 rs->sr_text = op->o_ssf
1145 ? "stronger confidentiality required"
1146 : "confidentiality required";
1147 return rs->sr_err;
1148 }
1149 }
1150
1151 if( updateop ) {
1152 if( op->o_transport_ssf < ssf->sss_update_transport ) {
1153 rs->sr_text = op->o_transport_ssf
1154 ? "stronger transport confidentiality required for update"
1155 : "transport confidentiality required for update";
1156 return rs->sr_err;
1157 }
1158
1159 if( op->o_tls_ssf < ssf->sss_update_tls ) {
1160 rs->sr_text = op->o_tls_ssf
1161 ? "stronger TLS confidentiality required for update"
1162 : "TLS confidentiality required for update";
1163 return rs->sr_err;
1164 }
1165
1166 if( op->o_sasl_ssf < ssf->sss_update_sasl ) {
1167 rs->sr_text = op->o_sasl_ssf
1168 ? "stronger SASL confidentiality required for update"
1169 : "SASL confidentiality required for update";
1170 return rs->sr_err;
1171 }
1172
1173 if( op->o_ssf < ssf->sss_update_ssf ) {
1174 rs->sr_text = op->o_ssf
1175 ? "stronger confidentiality required for update"
1176 : "confidentiality required for update";
1177 return rs->sr_err;
1178 }
1179
1180 if( !( global_allows & SLAP_ALLOW_UPDATE_ANON ) &&
1181 BER_BVISEMPTY( &op->o_ndn ) )
1182 {
1183 rs->sr_text = "modifications require authentication";
1184 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1185 return rs->sr_err;
1186 }
1187
1188 #ifdef SLAP_X_LISTENER_MOD
1189 if ( op->o_conn->c_listener &&
1190 ! ( op->o_conn->c_listener->sl_perms & ( !BER_BVISEMPTY( &op->o_ndn )
1191 ? (S_IWUSR|S_IWOTH) : S_IWOTH ) ) )
1192 {
1193 /* no "w" mode means readonly */
1194 rs->sr_text = "modifications not allowed on this listener";
1195 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1196 return rs->sr_err;
1197 }
1198 #endif /* SLAP_X_LISTENER_MOD */
1199 }
1200 }
1201
1202 if ( !session ) {
1203 /* these checks don't apply to Bind, StartTLS, or Unbind */
1204
1205 if( requires & SLAP_REQUIRE_STRONG ) {
1206 /* should check mechanism */
1207 if( ( op->o_transport_ssf < ssf->sss_transport
1208 && op->o_authtype == LDAP_AUTH_SIMPLE )
1209 || BER_BVISEMPTY( &op->o_dn ) )
1210 {
1211 rs->sr_text = "strong(er) authentication required";
1212 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1213 return rs->sr_err;
1214 }
1215 }
1216
1217 if( requires & SLAP_REQUIRE_SASL ) {
1218 if( op->o_authtype != LDAP_AUTH_SASL || BER_BVISEMPTY( &op->o_dn ) ) {
1219 rs->sr_text = "SASL authentication required";
1220 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1221 return rs->sr_err;
1222 }
1223 }
1224
1225 if( requires & SLAP_REQUIRE_AUTHC ) {
1226 if( BER_BVISEMPTY( &op->o_dn ) ) {
1227 rs->sr_text = "authentication required";
1228 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1229 return rs->sr_err;
1230 }
1231 }
1232
1233 if( requires & SLAP_REQUIRE_BIND ) {
1234 int version;
1235 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1236 version = op->o_conn->c_protocol;
1237 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1238
1239 if( !version ) {
1240 /* no bind has occurred */
1241 rs->sr_text = "BIND required";
1242 rs->sr_err = LDAP_OPERATIONS_ERROR;
1243 return rs->sr_err;
1244 }
1245 }
1246
1247 if( requires & SLAP_REQUIRE_LDAP_V3 ) {
1248 if( op->o_protocol < LDAP_VERSION3 ) {
1249 /* no bind has occurred */
1250 rs->sr_text = "operation restricted to LDAPv3 clients";
1251 rs->sr_err = LDAP_OPERATIONS_ERROR;
1252 return rs->sr_err;
1253 }
1254 }
1255
1256 #ifdef SLAP_X_LISTENER_MOD
1257 if ( !starttls && BER_BVISEMPTY( &op->o_dn ) ) {
1258 if ( op->o_conn->c_listener &&
1259 !( op->o_conn->c_listener->sl_perms & S_IXOTH ))
1260 {
1261 /* no "x" mode means bind required */
1262 rs->sr_text = "bind required on this listener";
1263 rs->sr_err = LDAP_STRONG_AUTH_REQUIRED;
1264 return rs->sr_err;
1265 }
1266 }
1267
1268 if ( !starttls && !updateop ) {
1269 if ( op->o_conn->c_listener &&
1270 !( op->o_conn->c_listener->sl_perms &
1271 ( !BER_BVISEMPTY( &op->o_dn )
1272 ? (S_IRUSR|S_IROTH) : S_IROTH )))
1273 {
1274 /* no "r" mode means no read */
1275 rs->sr_text = "read not allowed on this listener";
1276 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1277 return rs->sr_err;
1278 }
1279 }
1280 #endif /* SLAP_X_LISTENER_MOD */
1281
1282 }
1283
1284 if( ( restrictops & opflag )
1285 || ( exopflag && ( restrictops & exopflag ) ) ) {
1286 if( ( restrictops & SLAP_RESTRICT_OP_MASK) == SLAP_RESTRICT_OP_READS ) {
1287 rs->sr_text = "read operations restricted";
1288 } else if ( restrictops & exopflag ) {
1289 rs->sr_text = "extended operation restricted";
1290 } else {
1291 rs->sr_text = "operation restricted";
1292 }
1293 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1294 return rs->sr_err;
1295 }
1296
1297 rs->sr_err = LDAP_SUCCESS;
1298 return rs->sr_err;
1299 }
1300
1301 int backend_check_referrals( Operation *op, SlapReply *rs )
1302 {
1303 rs->sr_err = LDAP_SUCCESS;
1304
1305 if( op->o_bd->be_chk_referrals ) {
1306 rs->sr_err = op->o_bd->be_chk_referrals( op, rs );
1307
1308 if( rs->sr_err != LDAP_SUCCESS && rs->sr_err != LDAP_REFERRAL ) {
1309 send_ldap_result( op, rs );
1310 }
1311 }
1312
1313 return rs->sr_err;
1314 }
1315
1316 int
1317 be_entry_get_rw(
1318 Operation *op,
1319 struct berval *ndn,
1320 ObjectClass *oc,
1321 AttributeDescription *at,
1322 int rw,
1323 Entry **e )
1324 {
1325 *e = NULL;
1326
1327 if ( op->o_bd == NULL ) {
1328 return LDAP_NO_SUCH_OBJECT;
1329 }
1330
1331 if ( op->o_bd->be_fetch ) {
1332 return op->o_bd->be_fetch( op, ndn, oc, at, rw, e );
1333 }
1334
1335 return LDAP_UNWILLING_TO_PERFORM;
1336 }
1337
1338 int
1339 fe_acl_group(
1340 Operation *op,
1341 Entry *target,
1342 struct berval *gr_ndn,
1343 struct berval *op_ndn,
1344 ObjectClass *group_oc,
1345 AttributeDescription *group_at )
1346 {
1347 Entry *e;
1348 void *o_priv = op->o_private, *e_priv = NULL;
1349 Attribute *a;
1350 int rc;
1351 GroupAssertion *g;
1352 Backend *be = op->o_bd;
1353 OpExtra *oex;
1354
1355 LDAP_SLIST_FOREACH(oex, &op->o_extra, oe_next) {
1356 if ( oex->oe_key == (void *)backend_group )
1357 break;
1358 }
1359
1360 if ( oex && ((OpExtraDB *)oex)->oe_db )
1361 op->o_bd = ((OpExtraDB *)oex)->oe_db;
1362
1363 if ( !op->o_bd || !SLAP_DBHIDDEN( op->o_bd ))
1364 op->o_bd = select_backend( gr_ndn, 0 );
1365
1366 for ( g = op->o_groups; g; g = g->ga_next ) {
1367 if ( g->ga_be != op->o_bd || g->ga_oc != group_oc ||
1368 g->ga_at != group_at || g->ga_len != gr_ndn->bv_len )
1369 {
1370 continue;
1371 }
1372 if ( strcmp( g->ga_ndn, gr_ndn->bv_val ) == 0 ) {
1373 break;
1374 }
1375 }
1376
1377 if ( g ) {
1378 rc = g->ga_res;
1379 goto done;
1380 }
1381
1382 if ( target && dn_match( &target->e_nname, gr_ndn ) ) {
1383 e = target;
1384 rc = 0;
1385
1386 } else {
1387 op->o_private = NULL;
1388 rc = be_entry_get_rw( op, gr_ndn, group_oc, group_at, 0, &e );
1389 e_priv = op->o_private;
1390 op->o_private = o_priv;
1391 }
1392
1393 if ( e ) {
1394 a = attr_find( e->e_attrs, group_at );
1395 if ( a ) {
1396 /* If the attribute is a subtype of labeledURI,
1397 * treat this as a dynamic group ala groupOfURLs
1398 */
1399 if ( is_at_subtype( group_at->ad_type,
1400 slap_schema.si_ad_labeledURI->ad_type ) )
1401 {
1402 int i;
1403 LDAPURLDesc *ludp;
1404 struct berval bv, nbase;
1405 Filter *filter;
1406 Entry *user = NULL;
1407 void *user_priv = NULL;
1408 Backend *b2 = op->o_bd;
1409
1410 if ( target && dn_match( &target->e_nname, op_ndn ) ) {
1411 user = target;
1412 }
1413
1414 rc = LDAP_COMPARE_FALSE;
1415 for ( i = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ ) {
1416 if ( ldap_url_parse( a->a_vals[i].bv_val, &ludp ) !=
1417 LDAP_URL_SUCCESS )
1418 {
1419 continue;
1420 }
1421
1422 BER_BVZERO( &nbase );
1423
1424 /* host, attrs and extensions parts must be empty */
1425 if ( ( ludp->lud_host && *ludp->lud_host )
1426 || ludp->lud_attrs
1427 || ludp->lud_exts )
1428 {
1429 goto loopit;
1430 }
1431
1432 ber_str2bv( ludp->lud_dn, 0, 0, &bv );
1433 if ( dnNormalize( 0, NULL, NULL, &bv, &nbase,
1434 op->o_tmpmemctx ) != LDAP_SUCCESS )
1435 {
1436 goto loopit;
1437 }
1438
1439 switch ( ludp->lud_scope ) {
1440 case LDAP_SCOPE_BASE:
1441 if ( !dn_match( &nbase, op_ndn ) ) {
1442 goto loopit;
1443 }
1444 break;
1445 case LDAP_SCOPE_ONELEVEL:
1446 dnParent( op_ndn, &bv );
1447 if ( !dn_match( &nbase, &bv ) ) {
1448 goto loopit;
1449 }
1450 break;
1451 case LDAP_SCOPE_SUBTREE:
1452 if ( !dnIsSuffix( op_ndn, &nbase ) ) {
1453 goto loopit;
1454 }
1455 break;
1456 case LDAP_SCOPE_SUBORDINATE:
1457 if ( dn_match( &nbase, op_ndn ) ||
1458 !dnIsSuffix( op_ndn, &nbase ) )
1459 {
1460 goto loopit;
1461 }
1462 }
1463
1464 /* NOTE: this could be NULL
1465 * if no filter is provided,
1466 * or if filter parsing fails.
1467 * In the latter case,
1468 * we should give up. */
1469 if ( ludp->lud_filter != NULL && ludp->lud_filter != '\0') {
1470 filter = str2filter_x( op, ludp->lud_filter );
1471 if ( filter == NULL ) {
1472 /* give up... */
1473 rc = LDAP_OTHER;
1474 goto loopit;
1475 }
1476
1477 /* only get user if required
1478 * and not available yet */
1479 if ( user == NULL ) {
1480 int rc2;
1481
1482 op->o_bd = select_backend( op_ndn, 0 );
1483 op->o_private = NULL;
1484 rc2 = be_entry_get_rw( op, op_ndn, NULL, NULL, 0, &user );
1485 user_priv = op->o_private;
1486 op->o_private = o_priv;
1487 if ( rc2 != 0 ) {
1488 /* give up... */
1489 rc = LDAP_OTHER;
1490 goto loopit;
1491 }
1492 }
1493
1494 if ( test_filter( NULL, user, filter ) ==
1495 LDAP_COMPARE_TRUE )
1496 {
1497 rc = 0;
1498 }
1499 filter_free_x( op, filter );
1500 }
1501 loopit:
1502 ldap_free_urldesc( ludp );
1503 if ( !BER_BVISNULL( &nbase ) ) {
1504 op->o_tmpfree( nbase.bv_val, op->o_tmpmemctx );
1505 }
1506 if ( rc != LDAP_COMPARE_FALSE ) {
1507 break;
1508 }
1509 }
1510
1511 if ( user != NULL && user != target ) {
1512 op->o_private = user_priv;
1513 be_entry_release_r( op, user );
1514 op->o_private = o_priv;
1515 }
1516 op->o_bd = b2;
1517
1518 } else {
1519 rc = attr_valfind( a,
1520 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
1521 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
1522 op_ndn, NULL, op->o_tmpmemctx );
1523 if ( rc == LDAP_NO_SUCH_ATTRIBUTE ) {
1524 rc = LDAP_COMPARE_FALSE;
1525 }
1526 }
1527
1528 } else {
1529 rc = LDAP_NO_SUCH_ATTRIBUTE;
1530 }
1531
1532 if ( e != target ) {
1533 op->o_private = e_priv;
1534 be_entry_release_r( op, e );
1535 op->o_private = o_priv;
1536 }
1537
1538 } else {
1539 rc = LDAP_NO_SUCH_OBJECT;
1540 }
1541
1542 if ( op->o_tag != LDAP_REQ_BIND && !op->o_do_not_cache ) {
1543 g = op->o_tmpalloc( sizeof( GroupAssertion ) + gr_ndn->bv_len,
1544 op->o_tmpmemctx );
1545 g->ga_be = op->o_bd;
1546 g->ga_oc = group_oc;
1547 g->ga_at = group_at;
1548 g->ga_res = rc;
1549 g->ga_len = gr_ndn->bv_len;
1550 strcpy( g->ga_ndn, gr_ndn->bv_val );
1551 g->ga_next = op->o_groups;
1552 op->o_groups = g;
1553 }
1554
1555 done:
1556 op->o_bd = be;
1557 return rc;
1558 }
1559
1560 int
1561 backend_group(
1562 Operation *op,
1563 Entry *target,
1564 struct berval *gr_ndn,
1565 struct berval *op_ndn,
1566 ObjectClass *group_oc,
1567 AttributeDescription *group_at )
1568 {
1569 int rc;
1570 BackendDB *be_orig;
1571 OpExtraDB oex;
1572
1573 if ( op->o_abandon ) {
1574 return SLAPD_ABANDON;
1575 }
1576
1577 oex.oe_db = op->o_bd;
1578 oex.oe.oe_key = (void *)backend_group;
1579 LDAP_SLIST_INSERT_HEAD(&op->o_extra, &oex.oe, oe_next);
1580
1581 be_orig = op->o_bd;
1582 op->o_bd = frontendDB;
1583 rc = frontendDB->be_group( op, target, gr_ndn,
1584 op_ndn, group_oc, group_at );
1585 op->o_bd = be_orig;
1586 LDAP_SLIST_REMOVE(&op->o_extra, &oex.oe, OpExtra, oe_next);
1587
1588 return rc;
1589 }
1590
1591 int
1592 fe_acl_attribute(
1593 Operation *op,
1594 Entry *target,
1595 struct berval *edn,
1596 AttributeDescription *entry_at,
1597 BerVarray *vals,
1598 slap_access_t access )
1599 {
1600 Entry *e = NULL;
1601 void *o_priv = op->o_private, *e_priv = NULL;
1602 Attribute *a = NULL;
1603 int freeattr = 0, i, j, rc = LDAP_SUCCESS;
1604 AccessControlState acl_state = ACL_STATE_INIT;
1605 Backend *be = op->o_bd;
1606 OpExtra *oex;
1607
1608 LDAP_SLIST_FOREACH(oex, &op->o_extra, oe_next) {
1609 if ( oex->oe_key == (void *)backend_attribute )
1610 break;
1611 }
1612
1613 if ( oex && ((OpExtraDB *)oex)->oe_db )
1614 op->o_bd = ((OpExtraDB *)oex)->oe_db;
1615
1616 if ( !op->o_bd || !SLAP_DBHIDDEN( op->o_bd ))
1617 op->o_bd = select_backend( edn, 0 );
1618
1619 if ( target && dn_match( &target->e_nname, edn ) ) {
1620 e = target;
1621
1622 } else {
1623 op->o_private = NULL;
1624 rc = be_entry_get_rw( op, edn, NULL, entry_at, 0, &e );
1625 e_priv = op->o_private;
1626 op->o_private = o_priv;
1627 }
1628
1629 if ( e ) {
1630 if ( entry_at == slap_schema.si_ad_entry || entry_at == slap_schema.si_ad_children ) {
1631 assert( vals == NULL );
1632
1633 rc = LDAP_SUCCESS;
1634 if ( op->o_conn && access > ACL_NONE &&
1635 access_allowed( op, e, entry_at, NULL,
1636 access, &acl_state ) == 0 )
1637 {
1638 rc = LDAP_INSUFFICIENT_ACCESS;
1639 }
1640 goto freeit;
1641 }
1642
1643 a = attr_find( e->e_attrs, entry_at );
1644 if ( a == NULL ) {
1645 SlapReply rs = { 0 };
1646 AttributeName anlist[ 2 ];
1647
1648 anlist[ 0 ].an_name = entry_at->ad_cname;
1649 anlist[ 0 ].an_desc = entry_at;
1650 BER_BVZERO( &anlist[ 1 ].an_name );
1651 rs.sr_attrs = anlist;
1652
1653 /* NOTE: backend_operational() is also called
1654 * when returning results, so it's supposed
1655 * to do no harm to entries */
1656 rs.sr_entry = e;
1657 rc = backend_operational( op, &rs );
1658 rs.sr_entry = NULL;
1659
1660 if ( rc == LDAP_SUCCESS ) {
1661 if ( rs.sr_operational_attrs ) {
1662 freeattr = 1;
1663 a = rs.sr_operational_attrs;
1664
1665 } else {
1666 rc = LDAP_NO_SUCH_ATTRIBUTE;
1667 }
1668 }
1669 }
1670
1671 if ( a ) {
1672 BerVarray v;
1673
1674 if ( op->o_conn && access > ACL_NONE &&
1675 access_allowed( op, e, entry_at, NULL,
1676 access, &acl_state ) == 0 )
1677 {
1678 rc = LDAP_INSUFFICIENT_ACCESS;
1679 goto freeit;
1680 }
1681
1682 i = a->a_numvals;
1683 v = op->o_tmpalloc( sizeof(struct berval) * ( i + 1 ),
1684 op->o_tmpmemctx );
1685 for ( i = 0, j = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ )
1686 {
1687 if ( op->o_conn && access > ACL_NONE &&
1688 access_allowed( op, e, entry_at,
1689 &a->a_nvals[i],
1690 access,
1691 &acl_state ) == 0 )
1692 {
1693 continue;
1694 }
1695 ber_dupbv_x( &v[j], &a->a_nvals[i],
1696 op->o_tmpmemctx );
1697 if ( !BER_BVISNULL( &v[j] ) ) {
1698 j++;
1699 }
1700 }
1701 if ( j == 0 ) {
1702 op->o_tmpfree( v, op->o_tmpmemctx );
1703 *vals = NULL;
1704 rc = LDAP_INSUFFICIENT_ACCESS;
1705
1706 } else {
1707 BER_BVZERO( &v[j] );
1708 *vals = v;
1709 rc = LDAP_SUCCESS;
1710 }
1711 }
1712 freeit: if ( e != target ) {
1713 op->o_private = e_priv;
1714 be_entry_release_r( op, e );
1715 op->o_private = o_priv;
1716 }
1717 if ( freeattr ) {
1718 attr_free( a );
1719 }
1720 }
1721
1722 op->o_bd = be;
1723 return rc;
1724 }
1725
1726 int
1727 backend_attribute(
1728 Operation *op,
1729 Entry *target,
1730 struct berval *edn,
1731 AttributeDescription *entry_at,
1732 BerVarray *vals,
1733 slap_access_t access )
1734 {
1735 int rc;
1736 BackendDB *be_orig;
1737 OpExtraDB oex;
1738
1739 oex.oe_db = op->o_bd;
1740 oex.oe.oe_key = (void *)backend_attribute;
1741 LDAP_SLIST_INSERT_HEAD(&op->o_extra, &oex.oe, oe_next);
1742
1743 be_orig = op->o_bd;
1744 op->o_bd = frontendDB;
1745 rc = frontendDB->be_attribute( op, target, edn,
1746 entry_at, vals, access );
1747 op->o_bd = be_orig;
1748 LDAP_SLIST_REMOVE(&op->o_extra, &oex.oe, OpExtra, oe_next);
1749
1750 return rc;
1751 }
1752
1753 int
1754 backend_access(
1755 Operation *op,
1756 Entry *target,
1757 struct berval *edn,
1758 AttributeDescription *entry_at,
1759 struct berval *nval,
1760 slap_access_t access,
1761 slap_mask_t *mask )
1762 {
1763 Entry *e = NULL;
1764 void *o_priv = op->o_private, *e_priv = NULL;
1765 int rc = LDAP_INSUFFICIENT_ACCESS;
1766 Backend *be = op->o_bd;
1767
1768 /* pedantic */
1769 assert( op != NULL );
1770 assert( op->o_conn != NULL );
1771 assert( edn != NULL );
1772 assert( access > ACL_NONE );
1773
1774 if ( !op->o_bd ) {
1775 op->o_bd = select_backend( edn, 0 );
1776 }
1777
1778 if ( target && dn_match( &target->e_nname, edn ) ) {
1779 e = target;
1780
1781 } else {
1782 op->o_private = NULL;
1783 rc = be_entry_get_rw( op, edn, NULL, entry_at, 0, &e );
1784 e_priv = op->o_private;
1785 op->o_private = o_priv;
1786 }
1787
1788 if ( e ) {
1789 Attribute *a = NULL;
1790 int freeattr = 0;
1791
1792 if ( entry_at == NULL ) {
1793 entry_at = slap_schema.si_ad_entry;
1794 }
1795
1796 if ( entry_at == slap_schema.si_ad_entry || entry_at == slap_schema.si_ad_children )
1797 {
1798 if ( access_allowed_mask( op, e, entry_at,
1799 NULL, access, NULL, mask ) == 0 )
1800 {
1801 rc = LDAP_INSUFFICIENT_ACCESS;
1802
1803 } else {
1804 rc = LDAP_SUCCESS;
1805 }
1806
1807 } else {
1808 a = attr_find( e->e_attrs, entry_at );
1809 if ( a == NULL ) {
1810 SlapReply rs = { 0 };
1811 AttributeName anlist[ 2 ];
1812
1813 anlist[ 0 ].an_name = entry_at->ad_cname;
1814 anlist[ 0 ].an_desc = entry_at;
1815 BER_BVZERO( &anlist[ 1 ].an_name );
1816 rs.sr_attrs = anlist;
1817
1818 rs.sr_attr_flags = slap_attr_flags( rs.sr_attrs );
1819
1820 /* NOTE: backend_operational() is also called
1821 * when returning results, so it's supposed
1822 * to do no harm to entries */
1823 rs.sr_entry = e;
1824 rc = backend_operational( op, &rs );
1825 rs.sr_entry = NULL;
1826
1827 if ( rc == LDAP_SUCCESS ) {
1828 if ( rs.sr_operational_attrs ) {
1829 freeattr = 1;
1830 a = rs.sr_operational_attrs;
1831
1832 } else {
1833 rc = LDAP_NO_SUCH_OBJECT;
1834 }
1835 }
1836 }
1837
1838 if ( a ) {
1839 if ( access_allowed_mask( op, e, entry_at,
1840 nval, access, NULL, mask ) == 0 )
1841 {
1842 rc = LDAP_INSUFFICIENT_ACCESS;
1843 goto freeit;
1844 }
1845 rc = LDAP_SUCCESS;
1846 }
1847 }
1848 freeit: if ( e != target ) {
1849 op->o_private = e_priv;
1850 be_entry_release_r( op, e );
1851 op->o_private = o_priv;
1852 }
1853 if ( freeattr ) {
1854 attr_free( a );
1855 }
1856 }
1857
1858 op->o_bd = be;
1859 return rc;
1860 }
1861
1862 int
1863 fe_aux_operational(
1864 Operation *op,
1865 SlapReply *rs )
1866 {
1867 Attribute **ap;
1868 int rc = LDAP_SUCCESS;
1869 BackendDB *be_orig = op->o_bd;
1870 OpExtra *oex;
1871
1872 LDAP_SLIST_FOREACH(oex, &op->o_extra, oe_next) {
1873 if ( oex->oe_key == (void *)backend_operational )
1874 break;
1875 }
1876
1877 for ( ap = &rs->sr_operational_attrs; *ap; ap = &(*ap)->a_next )
1878 /* just count them */ ;
1879
1880 /*
1881 * If operational attributes (allegedly) are required,
1882 * and the backend supports specific operational attributes,
1883 * add them to the attribute list
1884 */
1885 if ( !( rs->sr_flags & REP_NO_ENTRYDN )
1886 && ( SLAP_OPATTRS( rs->sr_attr_flags ) || ( rs->sr_attrs &&
1887 ad_inlist( slap_schema.si_ad_entryDN, rs->sr_attrs ) ) ) )
1888 {
1889 *ap = slap_operational_entryDN( rs->sr_entry );
1890 ap = &(*ap)->a_next;
1891 }
1892
1893 if ( !( rs->sr_flags & REP_NO_SUBSCHEMA)
1894 && ( SLAP_OPATTRS( rs->sr_attr_flags ) || ( rs->sr_attrs &&
1895 ad_inlist( slap_schema.si_ad_subschemaSubentry, rs->sr_attrs ) ) ) )
1896 {
1897 *ap = slap_operational_subschemaSubentry( op->o_bd );
1898 ap = &(*ap)->a_next;
1899 }
1900
1901 /* Let the overlays have a chance at this */
1902 if ( oex && ((OpExtraDB *)oex)->oe_db )
1903 op->o_bd = ((OpExtraDB *)oex)->oe_db;
1904
1905 if ( !op->o_bd || !SLAP_DBHIDDEN( op->o_bd ))
1906 op->o_bd = select_backend( &op->o_req_ndn, 0 );
1907
1908 if ( op->o_bd != NULL && !be_match( op->o_bd, frontendDB ) &&
1909 ( SLAP_OPATTRS( rs->sr_attr_flags ) || rs->sr_attrs ) &&
1910 op->o_bd->be_operational != NULL )
1911 {
1912 rc = op->o_bd->be_operational( op, rs );
1913 }
1914 op->o_bd = be_orig;
1915
1916 return rc;
1917 }
1918
1919 int backend_operational( Operation *op, SlapReply *rs )
1920 {
1921 int rc;
1922 BackendDB *be_orig;
1923 OpExtraDB oex;
1924
1925 oex.oe_db = op->o_bd;
1926 oex.oe.oe_key = (void *)backend_operational;
1927 LDAP_SLIST_INSERT_HEAD(&op->o_extra, &oex.oe, oe_next);
1928
1929 /* Moved this into the frontend so global overlays are called */
1930
1931 be_orig = op->o_bd;
1932 op->o_bd = frontendDB;
1933 rc = frontendDB->be_operational( op, rs );
1934 op->o_bd = be_orig;
1935 LDAP_SLIST_REMOVE(&op->o_extra, &oex.oe, OpExtra, oe_next);
1936
1937 return rc;
1938 }
1939
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