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[netbsd-mini2440.git] / external / bsd / openldap / dist / servers / slapd / overlays / refint.c
blob4379fd52f5d45e4451b770cc529824fb870179c0
1 /* refint.c - referential integrity module */
2 /* $OpenLDAP: pkg/ldap/servers/slapd/overlays/refint.c,v 1.19.2.9 2008/05/27 20:18:19 quanah Exp $ */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 *
5 * Copyright 2004-2008 The OpenLDAP Foundation.
6 * Portions Copyright 2004 Symas Corporation.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted only as authorized by the OpenLDAP
11 * Public License.
12 *
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>.
16 */
17 /* ACKNOWLEDGEMENTS:
18 * This work was initially developed by Symas Corp. for inclusion in
19 * OpenLDAP Software. This work was sponsored by Hewlett-Packard.
20 */
21
22 #include "portable.h"
23
24 /* This module maintains referential integrity for a set of
25 * DN-valued attributes by searching for all references to a given
26 * DN whenever the DN is changed or its entry is deleted, and making
27 * the appropriate update.
28 *
29 * Updates are performed using the database rootdn in a separate task
30 * to allow the original operation to complete immediately.
31 */
32
33 #ifdef SLAPD_OVER_REFINT
34
35 #include <stdio.h>
36
37 #include <ac/string.h>
38 #include <ac/socket.h>
39
40 #include "slap.h"
41 #include "config.h"
42 #include "ldap_rq.h"
43
44 static slap_overinst refint;
45
46 /* The DN to use in the ModifiersName for all refint updates */
47 static BerValue refint_dn = BER_BVC("cn=Referential Integrity Overlay");
48 static BerValue refint_ndn = BER_BVC("cn=referential integrity overlay");
49
50 typedef struct refint_attrs_s {
51 struct refint_attrs_s *next;
52 AttributeDescription *attr;
53 BerVarray old_vals;
54 BerVarray old_nvals;
55 BerVarray new_vals;
56 BerVarray new_nvals;
57 int ra_numvals;
58 } refint_attrs;
59
60 typedef struct dependents_s {
61 struct dependents_s *next;
62 BerValue dn; /* target dn */
63 BerValue ndn;
64 refint_attrs *attrs;
65 } dependent_data;
66
67 typedef struct refint_q {
68 struct refint_q *next;
69 struct refint_data_s *rdata;
70 dependent_data *attrs; /* entries and attrs returned from callback */
71 BackendDB *db;
72 BerValue olddn;
73 BerValue oldndn;
74 BerValue newdn;
75 BerValue newndn;
76 } refint_q;
77
78 typedef struct refint_data_s {
79 const char *message; /* breadcrumbs */
80 struct refint_attrs_s *attrs; /* list of known attrs */
81 BerValue dn; /* basedn in parent, */
82 BerValue nothing; /* the nothing value, if needed */
83 BerValue nnothing; /* normalized nothingness */
84 BerValue refint_dn; /* modifier's name */
85 BerValue refint_ndn; /* normalized modifier's name */
86 struct re_s *qtask;
87 refint_q *qhead;
88 refint_q *qtail;
89 ldap_pvt_thread_mutex_t qmutex;
90 } refint_data;
91
92 #define RUNQ_INTERVAL 36000 /* a long time */
93
94 static MatchingRule *mr_dnSubtreeMatch;
95
96 enum {
97 REFINT_ATTRS = 1,
98 REFINT_NOTHING,
99 REFINT_MODIFIERSNAME
100 };
101
102 static ConfigDriver refint_cf_gen;
103
104 static ConfigTable refintcfg[] = {
105 { "refint_attributes", "attribute...", 2, 0, 0,
106 ARG_MAGIC|REFINT_ATTRS, refint_cf_gen,
107 "( OLcfgOvAt:11.1 NAME 'olcRefintAttribute' "
108 "DESC 'Attributes for referential integrity' "
109 "EQUALITY caseIgnoreMatch "
110 "SYNTAX OMsDirectoryString )", NULL, NULL },
111 { "refint_nothing", "string", 2, 2, 0,
112 ARG_DN|ARG_MAGIC|REFINT_NOTHING, refint_cf_gen,
113 "( OLcfgOvAt:11.2 NAME 'olcRefintNothing' "
114 "DESC 'Replacement DN to supply when needed' "
115 "SYNTAX OMsDN SINGLE-VALUE )", NULL, NULL },
116 { "refint_modifiersName", "DN", 2, 2, 0,
117 ARG_DN|ARG_MAGIC|REFINT_MODIFIERSNAME, refint_cf_gen,
118 "( OLcfgOvAt:11.3 NAME 'olcRefintModifiersName' "
119 "DESC 'The DN to use as modifiersName' "
120 "SYNTAX OMsDN SINGLE-VALUE )", NULL, NULL },
121 { NULL, NULL, 0, 0, 0, ARG_IGNORED }
122 };
123
124 static ConfigOCs refintocs[] = {
125 { "( OLcfgOvOc:11.1 "
126 "NAME 'olcRefintConfig' "
127 "DESC 'Referential integrity configuration' "
128 "SUP olcOverlayConfig "
129 "MAY ( olcRefintAttribute "
130 "$ olcRefintNothing "
131 "$ olcRefintModifiersName "
132 ") )",
133 Cft_Overlay, refintcfg },
134 { NULL, 0, NULL }
135 };
136
137 static int
138 refint_cf_gen(ConfigArgs *c)
139 {
140 slap_overinst *on = (slap_overinst *)c->bi;
141 refint_data *dd = (refint_data *)on->on_bi.bi_private;
142 refint_attrs *ip, *pip, **pipp = NULL;
143 AttributeDescription *ad;
144 const char *text;
145 int rc = ARG_BAD_CONF;
146 int i;
147
148 switch ( c->op ) {
149 case SLAP_CONFIG_EMIT:
150 switch ( c->type ) {
151 case REFINT_ATTRS:
152 ip = dd->attrs;
153 while ( ip ) {
154 value_add_one( &c->rvalue_vals,
155 &ip->attr->ad_cname );
156 ip = ip->next;
157 }
158 rc = 0;
159 break;
160 case REFINT_NOTHING:
161 if ( !BER_BVISEMPTY( &dd->nothing )) {
162 rc = value_add_one( &c->rvalue_vals,
163 &dd->nothing );
164 if ( rc ) return rc;
165 rc = value_add_one( &c->rvalue_nvals,
166 &dd->nnothing );
167 return rc;
168 }
169 rc = 0;
170 break;
171 case REFINT_MODIFIERSNAME:
172 if ( !BER_BVISEMPTY( &dd->refint_dn )) {
173 rc = value_add_one( &c->rvalue_vals,
174 &dd->refint_dn );
175 if ( rc ) return rc;
176 rc = value_add_one( &c->rvalue_nvals,
177 &dd->refint_ndn );
178 return rc;
179 }
180 rc = 0;
181 break;
182 default:
183 abort ();
184 }
185 break;
186 case LDAP_MOD_DELETE:
187 switch ( c->type ) {
188 case REFINT_ATTRS:
189 pipp = &dd->attrs;
190 if ( c->valx < 0 ) {
191 ip = *pipp;
192 *pipp = NULL;
193 while ( ip ) {
194 pip = ip;
195 ip = ip->next;
196 ch_free ( pip );
197 }
198 } else {
199 /* delete from linked list */
200 for ( i=0; i < c->valx; ++i ) {
201 pipp = &(*pipp)->next;
202 }
203 ip = *pipp;
204 *pipp = (*pipp)->next;
205
206 /* AttributeDescriptions are global so
207 * shouldn't be freed here... */
208 ch_free ( ip );
209 }
210 rc = 0;
211 break;
212 case REFINT_NOTHING:
213 if ( dd->nothing.bv_val )
214 ber_memfree ( dd->nothing.bv_val );
215 if ( dd->nnothing.bv_val )
216 ber_memfree ( dd->nnothing.bv_val );
217 dd->nothing.bv_len = 0;
218 dd->nnothing.bv_len = 0;
219 rc = 0;
220 break;
221 case REFINT_MODIFIERSNAME:
222 if ( dd->refint_dn.bv_val )
223 ber_memfree ( dd->refint_dn.bv_val );
224 if ( dd->refint_ndn.bv_val )
225 ber_memfree ( dd->refint_ndn.bv_val );
226 dd->refint_dn.bv_len = 0;
227 dd->refint_ndn.bv_len = 0;
228 rc = 0;
229 break;
230 default:
231 abort ();
232 }
233 break;
234 case SLAP_CONFIG_ADD:
235 /* fallthrough to LDAP_MOD_ADD */
236 case LDAP_MOD_ADD:
237 switch ( c->type ) {
238 case REFINT_ATTRS:
239 rc = 0;
240 for ( i=1; i < c->argc; ++i ) {
241 ad = NULL;
242 if ( slap_str2ad ( c->argv[i], &ad, &text )
243 == LDAP_SUCCESS) {
244 ip = ch_malloc (
245 sizeof ( refint_attrs ) );
246 ip->attr = ad;
247 ip->next = dd->attrs;
248 dd->attrs = ip;
249 } else {
250 snprintf( c->cr_msg, sizeof( c->cr_msg ),
251 "%s <%s>: %s", c->argv[0], c->argv[i], text );
252 Debug ( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
253 "%s: %s\n", c->log, c->cr_msg, 0 );
254 rc = ARG_BAD_CONF;
255 }
256 }
257 break;
258 case REFINT_NOTHING:
259 if ( dd->nothing.bv_val )
260 ber_memfree ( dd->nothing.bv_val );
261 if ( dd->nnothing.bv_val )
262 ber_memfree ( dd->nnothing.bv_val );
263 dd->nothing = c->value_dn;
264 dd->nnothing = c->value_ndn;
265 rc = 0;
266 break;
267 case REFINT_MODIFIERSNAME:
268 if ( dd->refint_dn.bv_val )
269 ber_memfree ( dd->refint_dn.bv_val );
270 if ( dd->refint_ndn.bv_val )
271 ber_memfree ( dd->refint_ndn.bv_val );
272 dd->refint_dn = c->value_dn;
273 dd->refint_ndn = c->value_ndn;
274 rc = 0;
275 break;
276 default:
277 abort ();
278 }
279 break;
280 default:
281 abort ();
282 }
283
284 return rc;
285 }
286
287 /*
288 ** allocate new refint_data;
289 ** store in on_bi.bi_private;
290 **
291 */
292
293 static int
294 refint_db_init(
295 BackendDB *be,
296 ConfigReply *cr
297 )
298 {
299 slap_overinst *on = (slap_overinst *)be->bd_info;
300 refint_data *id = ch_calloc(1,sizeof(refint_data));
301
302 id->message = "_init";
303 on->on_bi.bi_private = id;
304 ldap_pvt_thread_mutex_init( &id->qmutex );
305 return(0);
306 }
307
308 static int
309 refint_db_destroy(
310 BackendDB *be,
311 ConfigReply *cr
312 )
313 {
314 slap_overinst *on = (slap_overinst *)be->bd_info;
315
316 if ( on->on_bi.bi_private ) {
317 refint_data *id = on->on_bi.bi_private;
318 on->on_bi.bi_private = NULL;
319 ldap_pvt_thread_mutex_destroy( &id->qmutex );
320 ch_free( id );
321 }
322 return(0);
323 }
324
325 /*
326 ** initialize, copy basedn if not already set
327 **
328 */
329
330 static int
331 refint_open(
332 BackendDB *be,
333 ConfigReply *cr
334 )
335 {
336 slap_overinst *on = (slap_overinst *)be->bd_info;
337 refint_data *id = on->on_bi.bi_private;
338 id->message = "_open";
339
340 if ( BER_BVISNULL( &id->dn )) {
341 if ( BER_BVISNULL( &be->be_nsuffix[0] ))
342 return -1;
343 ber_dupbv( &id->dn, &be->be_nsuffix[0] );
344 }
345 if ( BER_BVISNULL( &id->refint_dn ) ) {
346 ber_dupbv( &id->refint_dn, &refint_dn );
347 ber_dupbv( &id->refint_ndn, &refint_ndn );
348 }
349 return(0);
350 }
351
352
353 /*
354 ** foreach configured attribute:
355 ** free it;
356 ** free our basedn;
357 ** (do not) free id->message;
358 ** reset on_bi.bi_private;
359 ** free our config data;
360 **
361 */
362
363 static int
364 refint_close(
365 BackendDB *be,
366 ConfigReply *cr
367 )
368 {
369 slap_overinst *on = (slap_overinst *) be->bd_info;
370 refint_data *id = on->on_bi.bi_private;
371 refint_attrs *ii, *ij;
372 id->message = "_close";
373
374 for(ii = id->attrs; ii; ii = ij) {
375 ij = ii->next;
376 ch_free(ii);
377 }
378 id->attrs = NULL;
379
380 ch_free( id->dn.bv_val );
381 BER_BVZERO( &id->dn );
382 ch_free( id->nothing.bv_val );
383 BER_BVZERO( &id->nothing );
384 ch_free( id->nnothing.bv_val );
385 BER_BVZERO( &id->nnothing );
386 ch_free( id->refint_dn.bv_val );
387 BER_BVZERO( &id->refint_dn );
388 ch_free( id->refint_ndn.bv_val );
389 BER_BVZERO( &id->refint_ndn );
390
391 return(0);
392 }
393
394 /*
395 ** search callback
396 ** generates a list of Attributes from search results
397 */
398
399 static int
400 refint_search_cb(
401 Operation *op,
402 SlapReply *rs
403 )
404 {
405 Attribute *a;
406 BerVarray b = NULL;
407 refint_q *rq = op->o_callback->sc_private;
408 refint_data *dd = rq->rdata;
409 refint_attrs *ia, *da = dd->attrs, *na;
410 dependent_data *ip;
411 int i;
412
413 Debug(LDAP_DEBUG_TRACE, "refint_search_cb <%s>\n",
414 rs->sr_entry ? rs->sr_entry->e_name.bv_val : "NOTHING", 0, 0);
415
416 if (rs->sr_type != REP_SEARCH || !rs->sr_entry) return(0);
417
418 /*
419 ** foreach configured attribute type:
420 ** if this attr exists in the search result,
421 ** and it has a value matching the target:
422 ** allocate an attr;
423 ** if this is a delete and there's only one value:
424 ** allocate the same attr again;
425 **
426 */
427
428 ip = op->o_tmpalloc(sizeof(dependent_data), op->o_tmpmemctx );
429 ber_dupbv_x( &ip->dn, &rs->sr_entry->e_name, op->o_tmpmemctx );
430 ber_dupbv_x( &ip->ndn, &rs->sr_entry->e_nname, op->o_tmpmemctx );
431 ip->next = rq->attrs;
432 rq->attrs = ip;
433 ip->attrs = NULL;
434 for(ia = da; ia; ia = ia->next) {
435 if ( (a = attr_find(rs->sr_entry->e_attrs, ia->attr) ) ) {
436 int first = -1, count = 0, deleted = 0;
437
438 na = NULL;
439
440 for(i = 0, b = a->a_nvals; b[i].bv_val; i++) {
441 count++;
442
443 if(dnIsSuffix(&b[i], &rq->oldndn)) {
444 /* first match? create structure */
445 if ( na == NULL ) {
446 na = op->o_tmpcalloc( 1,
447 sizeof( refint_attrs ),
448 op->o_tmpmemctx );
449 na->next = ip->attrs;
450 ip->attrs = na;
451 na->attr = ia->attr;
452
453 /* delete, or exact match? note it's first match */
454 if ( BER_BVISEMPTY( &rq->newdn ) &&
455 b[i].bv_len == rq->oldndn.bv_len )
456 {
457 first = i;
458 }
459 }
460
461 /* if it's a rename, or a subordinate match,
462 * save old and build new dn */
463 if ( !BER_BVISEMPTY( &rq->newdn ) &&
464 b[i].bv_len != rq->oldndn.bv_len )
465 {
466 struct berval newsub, newdn, olddn, oldndn;
467
468 /* if not first, save first as well */
469 if ( first != -1 ) {
470
471 ber_dupbv_x( &olddn, &a->a_vals[first], op->o_tmpmemctx );
472 ber_bvarray_add_x( &na->old_vals, &olddn, op->o_tmpmemctx );
473 ber_dupbv_x( &oldndn, &a->a_nvals[first], op->o_tmpmemctx );
474 ber_bvarray_add_x( &na->old_nvals, &oldndn, op->o_tmpmemctx );
475 na->ra_numvals++;
476
477 newsub = a->a_vals[first];
478 newsub.bv_len -= rq->olddn.bv_len + 1;
479
480 build_new_dn( &newdn, &rq->newdn, &newsub, op->o_tmpmemctx );
481
482 ber_bvarray_add_x( &na->new_vals, &newdn, op->o_tmpmemctx );
483
484 newsub = a->a_nvals[first];
485 newsub.bv_len -= rq->oldndn.bv_len + 1;
486
487 build_new_dn( &newdn, &rq->newndn, &newsub, op->o_tmpmemctx );
488
489 ber_bvarray_add_x( &na->new_nvals, &newdn, op->o_tmpmemctx );
490
491 first = -1;
492 }
493
494 ber_dupbv_x( &olddn, &a->a_vals[i], op->o_tmpmemctx );
495 ber_bvarray_add_x( &na->old_vals, &olddn, op->o_tmpmemctx );
496 ber_dupbv_x( &oldndn, &a->a_nvals[i], op->o_tmpmemctx );
497 ber_bvarray_add_x( &na->old_nvals, &oldndn, op->o_tmpmemctx );
498 na->ra_numvals++;
499
500 newsub = a->a_vals[i];
501 newsub.bv_len -= rq->olddn.bv_len + 1;
502
503 build_new_dn( &newdn, &rq->newdn, &newsub, op->o_tmpmemctx );
504
505 ber_bvarray_add_x( &na->new_vals, &newdn, op->o_tmpmemctx );
506
507 newsub = a->a_nvals[i];
508 newsub.bv_len -= rq->oldndn.bv_len + 1;
509
510 build_new_dn( &newdn, &rq->newndn, &newsub, op->o_tmpmemctx );
511
512 ber_bvarray_add_x( &na->new_nvals, &newdn, op->o_tmpmemctx );
513 }
514
515 /* count deletes */
516 if ( BER_BVISEMPTY( &rq->newdn ) ) {
517 deleted++;
518 }
519 }
520
521 /* If this is a delete and no value would be left, and
522 * we have a nothing DN configured, allocate the attr again.
523 */
524 if ( count == deleted && !BER_BVISNULL(&dd->nothing) )
525 {
526 na = op->o_tmpcalloc( 1,
527 sizeof( refint_attrs ),
528 op->o_tmpmemctx );
529 na->next = ip->attrs;
530 ip->attrs = na;
531 na->attr = ia->attr;
532 }
533
534 Debug( LDAP_DEBUG_TRACE, "refint_search_cb: %s: %s (#%d)\n",
535 a->a_desc->ad_cname.bv_val, rq->olddn.bv_val, count );
536 }
537 }
538 }
539
540 return(0);
541 }
542
543 static int
544 refint_repair(
545 Operation *op,
546 SlapReply *rs,
547 refint_data *id,
548 refint_q *rq )
549 {
550 dependent_data *dp, *dp_next;
551 int rc;
552
553 op->o_callback->sc_response = refint_search_cb;
554 op->o_req_dn = op->o_bd->be_suffix[ 0 ];
555 op->o_req_ndn = op->o_bd->be_nsuffix[ 0 ];
556 op->o_dn = op->o_bd->be_rootdn;
557 op->o_ndn = op->o_bd->be_rootndn;
558
559 /* search */
560 rc = op->o_bd->be_search( op, rs );
561
562 if ( rc != LDAP_SUCCESS ) {
563 Debug( LDAP_DEBUG_TRACE,
564 "refint_repair: search failed: %d\n",
565 rc, 0, 0 );
566 return 0;
567 }
568
569 /* safety? paranoid just in case */
570 if ( op->o_callback->sc_private == NULL ) {
571 Debug( LDAP_DEBUG_TRACE,
572 "refint_repair: callback wiped out sc_private?!\n",
573 0, 0, 0 );
574 return 0;
575 }
576
577 /* Set up the Modify requests */
578 op->o_callback->sc_response = &slap_null_cb;
579
580 /*
581 * [our search callback builds a list of attrs]
582 * foreach attr:
583 * make sure its dn has a backend;
584 * build Modification* chain;
585 * call the backend modify function;
586 *
587 */
588
589 for ( dp = rq->attrs; dp; dp = dp_next ) {
590 Operation op2 = *op;
591 SlapReply rs2 = { 0 };
592 refint_attrs *ra;
593 Modifications *m, *first = NULL;
594
595 dp_next = dp->next;
596
597 op2.o_tag = LDAP_REQ_MODIFY;
598 op2.orm_modlist = NULL;
599 op2.o_req_dn = dp->dn;
600 op2.o_req_ndn = dp->ndn;
601 op2.o_bd = select_backend( &dp->ndn, 1 );
602 if ( !op2.o_bd ) {
603 Debug( LDAP_DEBUG_TRACE,
604 "refint_repair: no backend for DN %s!\n",
605 dp->dn.bv_val, 0, 0 );
606 return 0;
607 }
608
609 rs2.sr_type = REP_RESULT;
610 for ( ra = dp->attrs; ra; ra = dp->attrs ) {
611 size_t len;
612
613 dp->attrs = ra->next;
614 /* Set our ModifiersName */
615 if ( SLAP_LASTMOD( op->o_bd ) ) {
616 m = op2.o_tmpalloc( sizeof(Modifications) +
617 4*sizeof(BerValue), op2.o_tmpmemctx );
618 m->sml_next = op2.orm_modlist;
619 if ( !first )
620 first = m;
621 op2.orm_modlist = m;
622 m->sml_op = LDAP_MOD_REPLACE;
623 m->sml_flags = SLAP_MOD_INTERNAL;
624 m->sml_desc = slap_schema.si_ad_modifiersName;
625 m->sml_type = m->sml_desc->ad_cname;
626 m->sml_numvals = 1;
627 m->sml_values = (BerVarray)(m+1);
628 m->sml_nvalues = m->sml_values+2;
629 BER_BVZERO( &m->sml_values[1] );
630 BER_BVZERO( &m->sml_nvalues[1] );
631 m->sml_values[0] = id->refint_dn;
632 m->sml_nvalues[0] = id->refint_ndn;
633 }
634 if ( !BER_BVISEMPTY( &rq->newdn ) || ( ra->next &&
635 ra->attr == ra->next->attr ) )
636 {
637 len = sizeof(Modifications);
638
639 if ( ra->new_vals == NULL ) {
640 len += 4*sizeof(BerValue);
641 }
642
643 m = op2.o_tmpalloc( len, op2.o_tmpmemctx );
644 m->sml_next = op2.orm_modlist;
645 if ( !first )
646 first = m;
647 op2.orm_modlist = m;
648 m->sml_op = LDAP_MOD_ADD;
649 m->sml_flags = 0;
650 m->sml_desc = ra->attr;
651 m->sml_type = ra->attr->ad_cname;
652 if ( ra->new_vals == NULL ) {
653 m->sml_values = (BerVarray)(m+1);
654 m->sml_nvalues = m->sml_values+2;
655 BER_BVZERO( &m->sml_values[1] );
656 BER_BVZERO( &m->sml_nvalues[1] );
657 m->sml_numvals = 1;
658 if ( BER_BVISEMPTY( &rq->newdn ) ) {
659 op2.o_tmpfree( ra, op2.o_tmpmemctx );
660 ra = dp->attrs;
661 dp->attrs = ra->next;
662 m->sml_values[0] = id->nothing;
663 m->sml_nvalues[0] = id->nnothing;
664 } else {
665 m->sml_values[0] = rq->newdn;
666 m->sml_nvalues[0] = rq->newndn;
667 }
668 } else {
669 m->sml_values = ra->new_vals;
670 m->sml_nvalues = ra->new_nvals;
671 m->sml_numvals = ra->ra_numvals;
672 }
673 }
674
675 len = sizeof(Modifications);
676 if ( ra->old_vals == NULL ) {
677 len += 4*sizeof(BerValue);
678 }
679
680 m = op2.o_tmpalloc( len, op2.o_tmpmemctx );
681 m->sml_next = op2.orm_modlist;
682 op2.orm_modlist = m;
683 if ( !first )
684 first = m;
685 m->sml_op = LDAP_MOD_DELETE;
686 m->sml_flags = 0;
687 m->sml_desc = ra->attr;
688 m->sml_type = ra->attr->ad_cname;
689 if ( ra->old_vals == NULL ) {
690 m->sml_numvals = 1;
691 m->sml_values = (BerVarray)(m+1);
692 m->sml_nvalues = m->sml_values+2;
693 m->sml_values[0] = rq->olddn;
694 m->sml_nvalues[0] = rq->oldndn;
695 BER_BVZERO( &m->sml_values[1] );
696 BER_BVZERO( &m->sml_nvalues[1] );
697 } else {
698 m->sml_values = ra->old_vals;
699 m->sml_nvalues = ra->old_nvals;
700 m->sml_numvals = ra->ra_numvals;
701 }
702 op2.o_tmpfree( ra, op2.o_tmpmemctx );
703 }
704
705 op2.o_dn = op2.o_bd->be_rootdn;
706 op2.o_ndn = op2.o_bd->be_rootndn;
707 slap_op_time( &op2.o_time, &op2.o_tincr );
708 if ( ( rc = op2.o_bd->be_modify( &op2, &rs2 ) ) != LDAP_SUCCESS ) {
709 Debug( LDAP_DEBUG_TRACE,
710 "refint_repair: dependent modify failed: %d\n",
711 rs2.sr_err, 0, 0 );
712 }
713
714 while ( ( m = op2.orm_modlist ) ) {
715 op2.orm_modlist = m->sml_next;
716 if ( m->sml_values && m->sml_values != (BerVarray)(m+1) ) {
717 ber_bvarray_free_x( m->sml_values, op2.o_tmpmemctx );
718 ber_bvarray_free_x( m->sml_nvalues, op2.o_tmpmemctx );
719 }
720 op2.o_tmpfree( m, op2.o_tmpmemctx );
721 if ( m == first ) break;
722 }
723 slap_mods_free( op2.orm_modlist, 1 );
724 op2.o_tmpfree( dp->ndn.bv_val, op2.o_tmpmemctx );
725 op2.o_tmpfree( dp->dn.bv_val, op2.o_tmpmemctx );
726 op2.o_tmpfree( dp, op2.o_tmpmemctx );
727 }
728
729 return 0;
730 }
731
732 static void *
733 refint_qtask( void *ctx, void *arg )
734 {
735 struct re_s *rtask = arg;
736 refint_data *id = rtask->arg;
737 Connection conn = {0};
738 OperationBuffer opbuf;
739 Operation *op;
740 SlapReply rs = {REP_RESULT};
741 slap_callback cb = { NULL, NULL, NULL, NULL };
742 Filter ftop, *fptr;
743 refint_q *rq;
744 refint_attrs *ip;
745
746 connection_fake_init( &conn, &opbuf, ctx );
747 op = &opbuf.ob_op;
748
749 /*
750 ** build a search filter for all configured attributes;
751 ** populate our Operation;
752 ** pass our data (attr list, dn) to backend via sc_private;
753 ** call the backend search function;
754 ** nb: (|(one=thing)) is valid, but do smart formatting anyway;
755 ** nb: 16 is arbitrarily a dozen or so extra bytes;
756 **
757 */
758
759 ftop.f_choice = LDAP_FILTER_OR;
760 ftop.f_next = NULL;
761 ftop.f_or = NULL;
762 op->ors_filter = &ftop;
763 for(ip = id->attrs; ip; ip = ip->next) {
764 fptr = op->o_tmpcalloc( sizeof(Filter) + sizeof(MatchingRuleAssertion),
765 1, op->o_tmpmemctx );
766 /* Use (attr:dnSubtreeMatch:=value) to catch subtree rename
767 * and subtree delete where supported */
768 fptr->f_choice = LDAP_FILTER_EXT;
769 fptr->f_mra = (MatchingRuleAssertion *)(fptr+1);
770 fptr->f_mr_rule = mr_dnSubtreeMatch;
771 fptr->f_mr_rule_text = mr_dnSubtreeMatch->smr_bvoid;
772 fptr->f_mr_desc = ip->attr;
773 fptr->f_mr_dnattrs = 0;
774 fptr->f_next = ftop.f_or;
775 ftop.f_or = fptr;
776 }
777
778 for (;;) {
779 /* Dequeue an op */
780 ldap_pvt_thread_mutex_lock( &id->qmutex );
781 rq = id->qhead;
782 if ( rq ) {
783 id->qhead = rq->next;
784 if ( !id->qhead )
785 id->qtail = NULL;
786 }
787 ldap_pvt_thread_mutex_unlock( &id->qmutex );
788 if ( !rq )
789 break;
790
791 for (fptr = ftop.f_or; fptr; fptr = fptr->f_next )
792 fptr->f_mr_value = rq->oldndn;
793
794 filter2bv_x( op, op->ors_filter, &op->ors_filterstr );
795
796 /* callback gets the searched dn instead */
797 cb.sc_private = rq;
798 cb.sc_response = refint_search_cb;
799 op->o_callback = &cb;
800 op->o_tag = LDAP_REQ_SEARCH;
801 op->ors_scope = LDAP_SCOPE_SUBTREE;
802 op->ors_deref = LDAP_DEREF_NEVER;
803 op->ors_limit = NULL;
804 op->ors_slimit = SLAP_NO_LIMIT;
805 op->ors_tlimit = SLAP_NO_LIMIT;
806
807 /* no attrs! */
808 op->ors_attrs = slap_anlist_no_attrs;
809
810 slap_op_time( &op->o_time, &op->o_tincr );
811
812 if ( rq->db != NULL ) {
813 op->o_bd = rq->db;
814 refint_repair( op, &rs, id, rq );
815
816 } else {
817 BackendDB *be;
818
819 LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
820 /* we may want to skip cn=config */
821 if ( be == LDAP_STAILQ_FIRST(&backendDB) ) {
822 continue;
823 }
824
825 if ( be->be_search && be->be_modify ) {
826 op->o_bd = be;
827 refint_repair( op, &rs, id, rq );
828 }
829 }
830 }
831
832 if ( !BER_BVISNULL( &rq->newndn )) {
833 ch_free( rq->newndn.bv_val );
834 ch_free( rq->newdn.bv_val );
835 }
836 ch_free( rq->oldndn.bv_val );
837 ch_free( rq->olddn.bv_val );
838 ch_free( rq );
839 }
840
841 /* free filter */
842 for ( fptr = ftop.f_or; fptr; ) {
843 Filter *f_next = fptr->f_next;
844 op->o_tmpfree( fptr, op->o_tmpmemctx );
845 fptr = f_next;
846 }
847
848 /* wait until we get explicitly scheduled again */
849 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
850 ldap_pvt_runqueue_stoptask( &slapd_rq, id->qtask );
851 ldap_pvt_runqueue_resched( &slapd_rq,id->qtask, 1 );
852 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
853
854 return NULL;
855 }
856
857 /*
858 ** refint_response
859 ** search for matching records and modify them
860 */
861
862 static int
863 refint_response(
864 Operation *op,
865 SlapReply *rs
866 )
867 {
868 slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
869 refint_data *id = on->on_bi.bi_private;
870 BerValue pdn;
871 int ac;
872 refint_q *rq;
873 BackendDB *db = NULL;
874 refint_attrs *ip;
875
876 id->message = "_refint_response";
877
878 /* If the main op failed or is not a Delete or ModRdn, ignore it */
879 if (( op->o_tag != LDAP_REQ_DELETE && op->o_tag != LDAP_REQ_MODRDN ) ||
880 rs->sr_err != LDAP_SUCCESS )
881 return SLAP_CB_CONTINUE;
882
883 /*
884 ** validate (and count) the list of attrs;
885 **
886 */
887
888 for(ip = id->attrs, ac = 0; ip; ip = ip->next, ac++);
889 if(!ac) {
890 Debug( LDAP_DEBUG_TRACE,
891 "refint_response called without any attributes\n", 0, 0, 0 );
892 return SLAP_CB_CONTINUE;
893 }
894
895 /*
896 ** find the backend that matches our configured basedn;
897 ** make sure it exists and has search and modify methods;
898 **
899 */
900
901 if ( on->on_info->oi_origdb != frontendDB ) {
902 db = select_backend(&id->dn, 1);
903
904 if ( db ) {
905 if ( !db->be_search || !db->be_modify ) {
906 Debug( LDAP_DEBUG_TRACE,
907 "refint_response: backend missing search and/or modify\n",
908 0, 0, 0 );
909 return SLAP_CB_CONTINUE;
910 }
911 } else {
912 Debug( LDAP_DEBUG_TRACE,
913 "refint_response: no backend for our baseDN %s??\n",
914 id->dn.bv_val, 0, 0 );
915 return SLAP_CB_CONTINUE;
916 }
917 }
918
919 rq = ch_calloc( 1, sizeof( refint_q ));
920 ber_dupbv( &rq->olddn, &op->o_req_dn );
921 ber_dupbv( &rq->oldndn, &op->o_req_ndn );
922 rq->db = db;
923 rq->rdata = id;
924
925 if ( op->o_tag == LDAP_REQ_MODRDN ) {
926 if ( op->oq_modrdn.rs_newSup ) {
927 pdn = *op->oq_modrdn.rs_newSup;
928 } else {
929 dnParent( &op->o_req_dn, &pdn );
930 }
931 build_new_dn( &rq->newdn, &pdn, &op->orr_newrdn, NULL );
932 if ( op->oq_modrdn.rs_nnewSup ) {
933 pdn = *op->oq_modrdn.rs_nnewSup;
934 } else {
935 dnParent( &op->o_req_ndn, &pdn );
936 }
937 build_new_dn( &rq->newndn, &pdn, &op->orr_nnewrdn, NULL );
938 }
939
940 ldap_pvt_thread_mutex_lock( &id->qmutex );
941 if ( id->qtail ) {
942 id->qtail->next = rq;
943 } else {
944 id->qhead = rq;
945 }
946 id->qtail = rq;
947 ldap_pvt_thread_mutex_unlock( &id->qmutex );
948
949 ac = 0;
950 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
951 if ( !id->qtask ) {
952 id->qtask = ldap_pvt_runqueue_insert( &slapd_rq, RUNQ_INTERVAL,
953 refint_qtask, id, "refint_qtask",
954 op->o_bd->be_suffix[0].bv_val );
955 ac = 1;
956 } else {
957 if ( !ldap_pvt_runqueue_isrunning( &slapd_rq, id->qtask ) &&
958 !id->qtask->next_sched.tv_sec ) {
959 id->qtask->interval.tv_sec = 0;
960 ldap_pvt_runqueue_resched( &slapd_rq, id->qtask, 0 );
961 id->qtask->interval.tv_sec = RUNQ_INTERVAL;
962 ac = 1;
963 }
964 }
965 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
966 if ( ac )
967 slap_wake_listener();
968
969 return SLAP_CB_CONTINUE;
970 }
971
972 /*
973 ** init_module is last so the symbols resolve "for free" --
974 ** it expects to be called automagically during dynamic module initialization
975 */
976
977 int refint_initialize() {
978 int rc;
979
980 mr_dnSubtreeMatch = mr_find( "dnSubtreeMatch" );
981 if ( mr_dnSubtreeMatch == NULL ) {
982 Debug( LDAP_DEBUG_ANY, "refint_initialize: "
983 "unable to find MatchingRule 'dnSubtreeMatch'.\n",
984 0, 0, 0 );
985 return 1;
986 }
987
988 /* statically declared just after the #includes at top */
989 refint.on_bi.bi_type = "refint";
990 refint.on_bi.bi_db_init = refint_db_init;
991 refint.on_bi.bi_db_destroy = refint_db_destroy;
992 refint.on_bi.bi_db_open = refint_open;
993 refint.on_bi.bi_db_close = refint_close;
994 refint.on_response = refint_response;
995
996 refint.on_bi.bi_cf_ocs = refintocs;
997 rc = config_register_schema ( refintcfg, refintocs );
998 if ( rc ) return rc;
999
1000 return(overlay_register(&refint));
1001 }
1002
1003 #if SLAPD_OVER_REFINT == SLAPD_MOD_DYNAMIC && defined(PIC)
1004 int init_module(int argc, char *argv[]) {
1005 return refint_initialize();
1006 }
1007 #endif
1008
1009 #endif /* SLAPD_OVER_REFINT */
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