1 /* refint.c - referential integrity module */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 2004-2014 The OpenLDAP Foundation.
6 * Portions Copyright 2004 Symas Corporation.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted only as authorized by the OpenLDAP
13 * A copy of this license is available in the file LICENSE in the
14 * top-level directory of the distribution or, alternatively, at
15 * <http://www.OpenLDAP.org/license.html>.
18 * This work was initially developed by Symas Corp. for inclusion in
19 * OpenLDAP Software. This work was sponsored by Hewlett-Packard.
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.
29 * Updates are performed using the database rootdn in a separate task
30 * to allow the original operation to complete immediately.
33 #ifdef SLAPD_OVER_REFINT
37 #include <ac/string.h>
38 #include <ac/socket.h>
44 static slap_overinst refint;
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");
50 typedef struct refint_attrs_s {
51 struct refint_attrs_s *next;
52 AttributeDescription *attr;
61 typedef struct dependents_s {
62 struct dependents_s *next;
63 BerValue dn; /* target dn */
68 typedef struct refint_q {
69 struct refint_q *next;
70 struct refint_data_s *rdata;
71 dependent_data *attrs; /* entries and attrs returned from callback */
79 typedef struct refint_data_s {
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 */
89 ldap_pvt_thread_mutex_t qmutex;
92 #define RUNQ_INTERVAL 36000 /* a long time */
94 static MatchingRule *mr_dnSubtreeMatch;
102 static ConfigDriver refint_cf_gen;
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 }
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 "
133 Cft_Overlay, refintcfg },
138 refint_cf_gen(ConfigArgs *c)
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;
145 int rc = ARG_BAD_CONF;
149 case SLAP_CONFIG_EMIT:
154 value_add_one( &c->rvalue_vals,
155 &ip->attr->ad_cname );
161 if ( !BER_BVISEMPTY( &dd->nothing )) {
162 rc = value_add_one( &c->rvalue_vals,
165 rc = value_add_one( &c->rvalue_nvals,
171 case REFINT_MODIFIERSNAME:
172 if ( !BER_BVISEMPTY( &dd->refint_dn )) {
173 rc = value_add_one( &c->rvalue_vals,
176 rc = value_add_one( &c->rvalue_nvals,
186 case LDAP_MOD_DELETE:
199 /* delete from linked list */
200 for ( i=0; i < c->valx; ++i ) {
201 pipp = &(*pipp)->next;
204 *pipp = (*pipp)->next;
206 /* AttributeDescriptions are global so
207 * shouldn't be freed here... */
213 ch_free( dd->nothing.bv_val );
214 ch_free( dd->nnothing.bv_val );
215 BER_BVZERO( &dd->nothing );
216 BER_BVZERO( &dd->nnothing );
219 case REFINT_MODIFIERSNAME:
220 ch_free( dd->refint_dn.bv_val );
221 ch_free( dd->refint_ndn.bv_val );
222 BER_BVZERO( &dd->refint_dn );
223 BER_BVZERO( &dd->refint_ndn );
230 case SLAP_CONFIG_ADD:
231 /* fallthrough to LDAP_MOD_ADD */
236 for ( i=1; i < c->argc; ++i ) {
238 if ( slap_str2ad ( c->argv[i], &ad, &text )
241 sizeof ( refint_attrs ) );
243 ip->next = dd->attrs;
246 snprintf( c->cr_msg, sizeof( c->cr_msg ),
247 "%s <%s>: %s", c->argv[0], c->argv[i], text );
248 Debug ( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
249 "%s: %s\n", c->log, c->cr_msg, 0 );
255 if ( !BER_BVISNULL( &c->value_ndn )) {
256 ch_free ( dd->nothing.bv_val );
257 ch_free ( dd->nnothing.bv_val );
258 dd->nothing = c->value_dn;
259 dd->nnothing = c->value_ndn;
265 case REFINT_MODIFIERSNAME:
266 if ( !BER_BVISNULL( &c->value_ndn )) {
267 ch_free( dd->refint_dn.bv_val );
268 ch_free( dd->refint_ndn.bv_val );
269 dd->refint_dn = c->value_dn;
270 dd->refint_ndn = c->value_ndn;
288 ** allocate new refint_data;
289 ** store in on_bi.bi_private;
299 slap_overinst *on = (slap_overinst *)be->bd_info;
300 refint_data *id = ch_calloc(1,sizeof(refint_data));
302 on->on_bi.bi_private = id;
303 ldap_pvt_thread_mutex_init( &id->qmutex );
313 slap_overinst *on = (slap_overinst *)be->bd_info;
315 if ( on->on_bi.bi_private ) {
316 refint_data *id = on->on_bi.bi_private;
317 refint_attrs *ii, *ij;
319 on->on_bi.bi_private = NULL;
320 ldap_pvt_thread_mutex_destroy( &id->qmutex );
322 for(ii = id->attrs; ii; ii = ij) {
327 ch_free( id->nothing.bv_val );
328 BER_BVZERO( &id->nothing );
329 ch_free( id->nnothing.bv_val );
330 BER_BVZERO( &id->nnothing );
338 ** initialize, copy basedn if not already set
348 slap_overinst *on = (slap_overinst *)be->bd_info;
349 refint_data *id = on->on_bi.bi_private;
351 if ( BER_BVISNULL( &id->dn )) {
352 if ( BER_BVISNULL( &be->be_nsuffix[0] ))
354 ber_dupbv( &id->dn, &be->be_nsuffix[0] );
356 if ( BER_BVISNULL( &id->refint_dn ) ) {
357 ber_dupbv( &id->refint_dn, &refint_dn );
358 ber_dupbv( &id->refint_ndn, &refint_ndn );
376 slap_overinst *on = (slap_overinst *) be->bd_info;
377 refint_data *id = on->on_bi.bi_private;
379 ch_free( id->dn.bv_val );
380 BER_BVZERO( &id->dn );
381 ch_free( id->refint_dn.bv_val );
382 BER_BVZERO( &id->refint_dn );
383 ch_free( id->refint_ndn.bv_val );
384 BER_BVZERO( &id->refint_ndn );
391 ** generates a list of Attributes from search results
402 refint_q *rq = op->o_callback->sc_private;
403 refint_data *dd = rq->rdata;
404 refint_attrs *ia, *da = dd->attrs, *na;
408 Debug(LDAP_DEBUG_TRACE, "refint_search_cb <%s>\n",
409 rs->sr_entry ? rs->sr_entry->e_name.bv_val : "NOTHING", 0, 0);
411 if (rs->sr_type != REP_SEARCH || !rs->sr_entry) return(0);
414 ** foreach configured attribute type:
415 ** if this attr exists in the search result,
416 ** and it has a value matching the target:
418 ** save/build DNs of any subordinate matches;
419 ** handle special case: found exact + subordinate match;
420 ** handle olcRefintNothing;
424 ip = op->o_tmpalloc(sizeof(dependent_data), op->o_tmpmemctx );
425 ber_dupbv_x( &ip->dn, &rs->sr_entry->e_name, op->o_tmpmemctx );
426 ber_dupbv_x( &ip->ndn, &rs->sr_entry->e_nname, op->o_tmpmemctx );
427 ip->next = rq->attrs;
430 for(ia = da; ia; ia = ia->next) {
431 if ( (a = attr_find(rs->sr_entry->e_attrs, ia->attr) ) ) {
432 int exact = -1, is_exact;
436 for(i = 0, b = a->a_nvals; b[i].bv_val; i++) {
437 if(dnIsSuffix(&b[i], &rq->oldndn)) {
438 is_exact = b[i].bv_len == rq->oldndn.bv_len;
440 /* Paranoia: skip buggy duplicate exact match,
441 * it would break ra_numvals
443 if ( is_exact && exact >= 0 )
446 /* first match? create structure */
448 na = op->o_tmpcalloc( 1,
449 sizeof( refint_attrs ),
451 na->next = ip->attrs;
459 /* Exact match: refint_repair will deduce the DNs */
463 /* Subordinate match */
464 struct berval newsub, newdn, olddn, oldndn;
467 ber_dupbv_x( &olddn, &a->a_vals[i], op->o_tmpmemctx );
468 ber_bvarray_add_x( &na->old_vals, &olddn, op->o_tmpmemctx );
470 ber_dupbv_x( &oldndn, &a->a_nvals[i], op->o_tmpmemctx );
471 ber_bvarray_add_x( &na->old_nvals, &oldndn, op->o_tmpmemctx );
473 if ( BER_BVISEMPTY( &rq->newdn ) )
476 /* Rename subordinate match: Build new DN */
477 newsub = a->a_vals[i];
478 newsub.bv_len -= rq->olddn.bv_len + 1;
479 build_new_dn( &newdn, &rq->newdn, &newsub, op->o_tmpmemctx );
480 ber_bvarray_add_x( &na->new_vals, &newdn, op->o_tmpmemctx );
482 newsub = a->a_nvals[i];
483 newsub.bv_len -= rq->oldndn.bv_len + 1;
484 build_new_dn( &newdn, &rq->newndn, &newsub, op->o_tmpmemctx );
485 ber_bvarray_add_x( &na->new_nvals, &newdn, op->o_tmpmemctx );
490 /* If we got both subordinate and exact match,
491 * refint_repair won't special-case the exact match */
492 if ( exact >= 0 && na->old_vals ) {
495 ber_dupbv_x( &dn, &a->a_vals[exact], op->o_tmpmemctx );
496 ber_bvarray_add_x( &na->old_vals, &dn, op->o_tmpmemctx );
497 ber_dupbv_x( &dn, &a->a_nvals[exact], op->o_tmpmemctx );
498 ber_bvarray_add_x( &na->old_nvals, &dn, op->o_tmpmemctx );
500 if ( !BER_BVISEMPTY( &rq->newdn ) ) {
501 ber_dupbv_x( &dn, &rq->newdn, op->o_tmpmemctx );
502 ber_bvarray_add_x( &na->new_vals, &dn, op->o_tmpmemctx );
503 ber_dupbv_x( &dn, &rq->newndn, op->o_tmpmemctx );
504 ber_bvarray_add_x( &na->new_nvals, &dn, op->o_tmpmemctx );
508 /* Deleting/replacing all values and a nothing DN is configured? */
509 if ( na && na->ra_numvals == i && !BER_BVISNULL(&dd->nothing) )
512 Debug( LDAP_DEBUG_TRACE, "refint_search_cb: %s: %s (#%d)\n",
513 a->a_desc->ad_cname.bv_val, rq->olddn.bv_val, i );
527 SlapReply rs = {REP_RESULT};
532 op->o_callback->sc_response = refint_search_cb;
533 op->o_req_dn = op->o_bd->be_suffix[ 0 ];
534 op->o_req_ndn = op->o_bd->be_nsuffix[ 0 ];
535 op->o_dn = op->o_bd->be_rootdn;
536 op->o_ndn = op->o_bd->be_rootndn;
539 rc = op->o_bd->be_search( op, &rs );
541 if ( rc != LDAP_SUCCESS ) {
542 Debug( LDAP_DEBUG_TRACE,
543 "refint_repair: search failed: %d\n",
548 /* safety? paranoid just in case */
549 if ( op->o_callback->sc_private == NULL ) {
550 Debug( LDAP_DEBUG_TRACE,
551 "refint_repair: callback wiped out sc_private?!\n",
556 /* Set up the Modify requests */
557 op->o_callback->sc_response = &slap_null_cb;
560 * [our search callback builds a list of attrs]
562 * make sure its dn has a backend;
563 * build Modification* chain;
564 * call the backend modify function;
570 for ( dp = rq->attrs; dp; dp = dp->next ) {
571 SlapReply rs2 = {REP_RESULT};
575 if ( dp->attrs == NULL ) continue; /* TODO: Is this needed? */
577 op2.o_bd = select_backend( &dp->ndn, 1 );
579 Debug( LDAP_DEBUG_TRACE,
580 "refint_repair: no backend for DN %s!\n",
581 dp->dn.bv_val, 0, 0 );
584 op2.o_tag = LDAP_REQ_MODIFY;
585 op2.orm_modlist = NULL;
586 op2.o_req_dn = dp->dn;
587 op2.o_req_ndn = dp->ndn;
588 /* Internal ops, never replicate these */
589 op2.orm_no_opattrs = 1;
590 op2.o_dont_replicate = 1;
593 /* Set our ModifiersName */
594 if ( SLAP_LASTMOD( op->o_bd ) ) {
595 m = op2.o_tmpalloc( sizeof(Modifications) +
596 4*sizeof(BerValue), op2.o_tmpmemctx );
597 m->sml_next = op2.orm_modlist;
599 m->sml_op = LDAP_MOD_REPLACE;
600 m->sml_flags = SLAP_MOD_INTERNAL;
601 m->sml_desc = slap_schema.si_ad_modifiersName;
602 m->sml_type = m->sml_desc->ad_cname;
604 m->sml_values = (BerVarray)(m+1);
605 m->sml_nvalues = m->sml_values+2;
606 BER_BVZERO( &m->sml_values[1] );
607 BER_BVZERO( &m->sml_nvalues[1] );
608 m->sml_values[0] = id->refint_dn;
609 m->sml_nvalues[0] = id->refint_ndn;
612 for ( ra = dp->attrs; ra; ra = ra->next ) {
616 if ( ra->dont_empty || !BER_BVISEMPTY( &rq->newdn ) ) {
617 len = sizeof(Modifications);
619 if ( ra->new_vals == NULL ) {
620 len += 4*sizeof(BerValue);
623 m = op2.o_tmpalloc( len, op2.o_tmpmemctx );
624 m->sml_next = op2.orm_modlist;
626 m->sml_op = LDAP_MOD_ADD;
628 m->sml_desc = ra->attr;
629 m->sml_type = ra->attr->ad_cname;
630 if ( ra->new_vals == NULL ) {
631 m->sml_values = (BerVarray)(m+1);
632 m->sml_nvalues = m->sml_values+2;
633 BER_BVZERO( &m->sml_values[1] );
634 BER_BVZERO( &m->sml_nvalues[1] );
636 if ( BER_BVISEMPTY( &rq->newdn ) ) {
637 m->sml_values[0] = id->nothing;
638 m->sml_nvalues[0] = id->nnothing;
640 m->sml_values[0] = rq->newdn;
641 m->sml_nvalues[0] = rq->newndn;
644 m->sml_values = ra->new_vals;
645 m->sml_nvalues = ra->new_nvals;
646 m->sml_numvals = ra->ra_numvals;
651 len = sizeof(Modifications);
652 if ( ra->old_vals == NULL ) {
653 len += 4*sizeof(BerValue);
655 m = op2.o_tmpalloc( len, op2.o_tmpmemctx );
656 m->sml_next = op2.orm_modlist;
658 m->sml_op = LDAP_MOD_DELETE;
660 m->sml_desc = ra->attr;
661 m->sml_type = ra->attr->ad_cname;
662 if ( ra->old_vals == NULL ) {
664 m->sml_values = (BerVarray)(m+1);
665 m->sml_nvalues = m->sml_values+2;
666 m->sml_values[0] = rq->olddn;
667 m->sml_nvalues[0] = rq->oldndn;
668 BER_BVZERO( &m->sml_values[1] );
669 BER_BVZERO( &m->sml_nvalues[1] );
671 m->sml_values = ra->old_vals;
672 m->sml_nvalues = ra->old_nvals;
673 m->sml_numvals = ra->ra_numvals;
677 op2.o_dn = op2.o_bd->be_rootdn;
678 op2.o_ndn = op2.o_bd->be_rootndn;
679 rc = op2.o_bd->be_modify( &op2, &rs2 );
680 if ( rc != LDAP_SUCCESS ) {
681 Debug( LDAP_DEBUG_TRACE,
682 "refint_repair: dependent modify failed: %d\n",
686 while ( ( m = op2.orm_modlist ) ) {
687 op2.orm_modlist = m->sml_next;
688 op2.o_tmpfree( m, op2.o_tmpmemctx );
697 refint_qtask( void *ctx, void *arg )
699 struct re_s *rtask = arg;
700 refint_data *id = rtask->arg;
701 Connection conn = {0};
702 OperationBuffer opbuf;
704 slap_callback cb = { NULL, NULL, NULL, NULL };
708 int pausing = 0, rc = 0;
710 connection_fake_init( &conn, &opbuf, ctx );
714 ** build a search filter for all configured attributes;
715 ** populate our Operation;
716 ** pass our data (attr list, dn) to backend via sc_private;
717 ** call the backend search function;
718 ** nb: (|(one=thing)) is valid, but do smart formatting anyway;
719 ** nb: 16 is arbitrarily a dozen or so extra bytes;
723 ftop.f_choice = LDAP_FILTER_OR;
726 op->ors_filter = &ftop;
727 for(ip = id->attrs; ip; ip = ip->next) {
728 fptr = op->o_tmpcalloc( sizeof(Filter) + sizeof(MatchingRuleAssertion),
729 1, op->o_tmpmemctx );
730 /* Use (attr:dnSubtreeMatch:=value) to catch subtree rename
731 * and subtree delete where supported */
732 fptr->f_choice = LDAP_FILTER_EXT;
733 fptr->f_mra = (MatchingRuleAssertion *)(fptr+1);
734 fptr->f_mr_rule = mr_dnSubtreeMatch;
735 fptr->f_mr_rule_text = mr_dnSubtreeMatch->smr_bvoid;
736 fptr->f_mr_desc = ip->attr;
737 fptr->f_mr_dnattrs = 0;
738 fptr->f_next = ftop.f_or;
743 dependent_data *dp, *dp_next;
744 refint_attrs *ra, *ra_next;
746 if ( ldap_pvt_thread_pool_pausing( &connection_pool ) > 0 ) {
752 ldap_pvt_thread_mutex_lock( &id->qmutex );
755 id->qhead = rq->next;
759 ldap_pvt_thread_mutex_unlock( &id->qmutex );
763 for (fptr = ftop.f_or; fptr; fptr = fptr->f_next )
764 fptr->f_mr_value = rq->oldndn;
766 filter2bv_x( op, op->ors_filter, &op->ors_filterstr );
768 /* callback gets the searched dn instead */
770 cb.sc_response = refint_search_cb;
771 op->o_callback = &cb;
772 op->o_tag = LDAP_REQ_SEARCH;
773 op->ors_scope = LDAP_SCOPE_SUBTREE;
774 op->ors_deref = LDAP_DEREF_NEVER;
775 op->ors_limit = NULL;
776 op->ors_slimit = SLAP_NO_LIMIT;
777 op->ors_tlimit = SLAP_NO_LIMIT;
780 op->ors_attrs = slap_anlist_no_attrs;
782 slap_op_time( &op->o_time, &op->o_tincr );
784 if ( rq->db != NULL ) {
786 rc = refint_repair( op, id, rq );
791 LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
792 /* we may want to skip cn=config */
793 if ( be == LDAP_STAILQ_FIRST(&backendDB) ) {
797 if ( be->be_search && be->be_modify ) {
799 rc = refint_repair( op, id, rq );
804 for ( dp = rq->attrs; dp; dp = dp_next ) {
806 for ( ra = dp->attrs; ra; ra = ra_next ) {
808 ber_bvarray_free_x( ra->new_nvals, op->o_tmpmemctx );
809 ber_bvarray_free_x( ra->new_vals, op->o_tmpmemctx );
810 ber_bvarray_free_x( ra->old_nvals, op->o_tmpmemctx );
811 ber_bvarray_free_x( ra->old_vals, op->o_tmpmemctx );
812 op->o_tmpfree( ra, op->o_tmpmemctx );
814 op->o_tmpfree( dp->ndn.bv_val, op->o_tmpmemctx );
815 op->o_tmpfree( dp->dn.bv_val, op->o_tmpmemctx );
816 op->o_tmpfree( dp, op->o_tmpmemctx );
818 op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
819 if ( rc == LDAP_BUSY ) {
821 /* re-queue this op */
822 ldap_pvt_thread_mutex_lock( &id->qmutex );
823 rq->next = id->qhead;
827 ldap_pvt_thread_mutex_unlock( &id->qmutex );
831 if ( !BER_BVISNULL( &rq->newndn )) {
832 ch_free( rq->newndn.bv_val );
833 ch_free( rq->newdn.bv_val );
835 ch_free( rq->oldndn.bv_val );
836 ch_free( rq->olddn.bv_val );
841 for ( fptr = ftop.f_or; fptr; ) {
842 Filter *f_next = fptr->f_next;
843 op->o_tmpfree( fptr, op->o_tmpmemctx );
847 /* wait until we get explicitly scheduled again */
848 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
849 ldap_pvt_runqueue_stoptask( &slapd_rq, id->qtask );
851 /* try to run again as soon as the pause is done */
852 id->qtask->interval.tv_sec = 0;
853 ldap_pvt_runqueue_resched( &slapd_rq, id->qtask, 0 );
854 id->qtask->interval.tv_sec = RUNQ_INTERVAL;
856 ldap_pvt_runqueue_resched( &slapd_rq,id->qtask, 1 );
858 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
865 ** search for matching records and modify them
874 slap_overinst *on = (slap_overinst *) op->o_bd->bd_info;
875 refint_data *id = on->on_bi.bi_private;
879 BackendDB *db = NULL;
882 /* If the main op failed or is not a Delete or ModRdn, ignore it */
883 if (( op->o_tag != LDAP_REQ_DELETE && op->o_tag != LDAP_REQ_MODRDN ) ||
884 rs->sr_err != LDAP_SUCCESS )
885 return SLAP_CB_CONTINUE;
888 ** validate (and count) the list of attrs;
892 for(ip = id->attrs, ac = 0; ip; ip = ip->next, ac++);
894 Debug( LDAP_DEBUG_TRACE,
895 "refint_response called without any attributes\n", 0, 0, 0 );
896 return SLAP_CB_CONTINUE;
900 ** find the backend that matches our configured basedn;
901 ** make sure it exists and has search and modify methods;
905 if ( on->on_info->oi_origdb != frontendDB ) {
906 db = select_backend(&id->dn, 1);
909 if ( !db->be_search || !db->be_modify ) {
910 Debug( LDAP_DEBUG_TRACE,
911 "refint_response: backend missing search and/or modify\n",
913 return SLAP_CB_CONTINUE;
916 Debug( LDAP_DEBUG_TRACE,
917 "refint_response: no backend for our baseDN %s??\n",
918 id->dn.bv_val, 0, 0 );
919 return SLAP_CB_CONTINUE;
923 rq = ch_calloc( 1, sizeof( refint_q ));
924 ber_dupbv( &rq->olddn, &op->o_req_dn );
925 ber_dupbv( &rq->oldndn, &op->o_req_ndn );
929 if ( op->o_tag == LDAP_REQ_MODRDN ) {
930 if ( op->oq_modrdn.rs_newSup ) {
931 pdn = *op->oq_modrdn.rs_newSup;
933 dnParent( &op->o_req_dn, &pdn );
935 build_new_dn( &rq->newdn, &pdn, &op->orr_newrdn, NULL );
936 if ( op->oq_modrdn.rs_nnewSup ) {
937 pdn = *op->oq_modrdn.rs_nnewSup;
939 dnParent( &op->o_req_ndn, &pdn );
941 build_new_dn( &rq->newndn, &pdn, &op->orr_nnewrdn, NULL );
944 ldap_pvt_thread_mutex_lock( &id->qmutex );
946 id->qtail->next = rq;
951 ldap_pvt_thread_mutex_unlock( &id->qmutex );
954 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
956 id->qtask = ldap_pvt_runqueue_insert( &slapd_rq, RUNQ_INTERVAL,
957 refint_qtask, id, "refint_qtask",
958 op->o_bd->be_suffix[0].bv_val );
961 if ( !ldap_pvt_runqueue_isrunning( &slapd_rq, id->qtask ) &&
962 !id->qtask->next_sched.tv_sec ) {
963 id->qtask->interval.tv_sec = 0;
964 ldap_pvt_runqueue_resched( &slapd_rq, id->qtask, 0 );
965 id->qtask->interval.tv_sec = RUNQ_INTERVAL;
969 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
971 slap_wake_listener();
973 return SLAP_CB_CONTINUE;
977 ** init_module is last so the symbols resolve "for free" --
978 ** it expects to be called automagically during dynamic module initialization
981 int refint_initialize() {
984 mr_dnSubtreeMatch = mr_find( "dnSubtreeMatch" );
985 if ( mr_dnSubtreeMatch == NULL ) {
986 Debug( LDAP_DEBUG_ANY, "refint_initialize: "
987 "unable to find MatchingRule 'dnSubtreeMatch'.\n",
992 /* statically declared just after the #includes at top */
993 refint.on_bi.bi_type = "refint";
994 refint.on_bi.bi_db_init = refint_db_init;
995 refint.on_bi.bi_db_destroy = refint_db_destroy;
996 refint.on_bi.bi_db_open = refint_open;
997 refint.on_bi.bi_db_close = refint_close;
998 refint.on_response = refint_response;
1000 refint.on_bi.bi_cf_ocs = refintocs;
1001 rc = config_register_schema ( refintcfg, refintocs );
1002 if ( rc ) return rc;
1004 return(overlay_register(&refint));
1007 #if SLAPD_OVER_REFINT == SLAPD_MOD_DYNAMIC && defined(PIC)
1008 int init_module(int argc, char *argv[]) {
1009 return refint_initialize();
1013 #endif /* SLAPD_OVER_REFINT */