2 /* syncprov.c - syncrepl provider */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 2004-2007 The OpenLDAP Foundation.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted only as authorized by the OpenLDAP
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>.
17 * This work was initially developed by Howard Chu for inclusion in
23 #ifdef SLAPD_OVER_SYNCPROV
25 #include <ac/string.h>
31 /* A modify request on a particular entry */
32 typedef struct modinst {
33 struct modinst *mi_next;
37 typedef struct modtarget {
38 struct modinst *mt_mods;
39 struct modinst *mt_tail;
41 ldap_pvt_thread_mutex_t mt_mutex;
44 /* A queued result of a persistent search */
45 typedef struct syncres {
46 struct syncres *s_next;
55 /* Record of a persistent search */
56 typedef struct syncops {
57 struct syncops *s_next;
58 struct berval s_base; /* ndn of search base */
59 ID s_eid; /* entryID of search base */
60 Operation *s_op; /* search op */
62 struct berval s_filterstr;
63 int s_flags; /* search status */
64 #define PS_IS_REFRESHING 0x01
65 #define PS_IS_DETACHED 0x02
66 #define PS_WROTE_BASE 0x04
67 #define PS_FIND_BASE 0x08
68 #define PS_FIX_FILTER 0x10
70 int s_inuse; /* reference count */
71 struct syncres *s_res;
72 struct syncres *s_restail;
73 struct re_s *s_qtask; /* task for playing psearch responses */
74 #define RUNQ_INTERVAL 36000 /* a long time */
75 ldap_pvt_thread_mutex_t s_mutex;
78 /* A received sync control */
79 typedef struct sync_control {
80 struct sync_cookie sr_state;
84 #if 0 /* moved back to slap.h */
85 #define o_sync o_ctrlflag[slap_cids.sc_LDAPsync]
87 /* o_sync_mode uses data bits of o_sync */
88 #define o_sync_mode o_ctrlflag[slap_cids.sc_LDAPsync]
90 #define SLAP_SYNC_NONE (LDAP_SYNC_NONE<<SLAP_CONTROL_SHIFT)
91 #define SLAP_SYNC_REFRESH (LDAP_SYNC_REFRESH_ONLY<<SLAP_CONTROL_SHIFT)
92 #define SLAP_SYNC_PERSIST (LDAP_SYNC_RESERVED<<SLAP_CONTROL_SHIFT)
93 #define SLAP_SYNC_REFRESH_AND_PERSIST (LDAP_SYNC_REFRESH_AND_PERSIST<<SLAP_CONTROL_SHIFT)
95 /* Record of which searches matched at premodify step */
96 typedef struct syncmatches {
97 struct syncmatches *sm_next;
101 /* Session log data */
102 typedef struct slog_entry {
103 struct slog_entry *se_next;
104 struct berval se_uuid;
105 struct berval se_csn;
109 typedef struct sessionlog {
110 struct berval sl_mincsn;
115 ldap_pvt_thread_mutex_t sl_mutex;
118 /* The main state for this overlay */
119 typedef struct syncprov_info_t {
121 struct berval si_ctxcsn; /* ldapsync context */
122 int si_chkops; /* checkpointing info */
124 int si_numops; /* number of ops since last checkpoint */
125 int si_nopres; /* Skip present phase */
126 int si_usehint; /* use reload hint */
127 time_t si_chklast; /* time of last checkpoint */
128 Avlnode *si_mods; /* entries being modified */
130 ldap_pvt_thread_rdwr_t si_csn_rwlock;
131 ldap_pvt_thread_mutex_t si_ops_mutex;
132 ldap_pvt_thread_mutex_t si_mods_mutex;
133 char si_ctxcsnbuf[LDAP_LUTIL_CSNSTR_BUFSIZE];
136 typedef struct opcookie {
138 syncmatches *smatches;
139 struct berval sdn; /* DN of entry, for deletes */
141 struct berval suuid; /* UUID of entry */
142 struct berval sctxcsn;
143 int sreference; /* Is the entry a reference? */
146 typedef struct fbase_cookie {
147 struct berval *fdn; /* DN of a modified entry, for scope testing */
148 syncops *fss; /* persistent search we're testing against */
149 int fbase; /* if TRUE we found the search base and it's still valid */
150 int fscope; /* if TRUE then fdn is within the psearch scope */
153 static AttributeName csn_anlist[3];
154 static AttributeName uuid_anlist[2];
156 /* Build a LDAPsync intermediate state control */
162 int entry_sync_state,
166 struct berval *cookie )
171 BerElementBuffer berbuf;
172 BerElement *ber = (BerElement *)&berbuf;
174 struct berval entryuuid_bv = BER_BVNULL;
176 ber_init2( ber, 0, LBER_USE_DER );
177 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
179 ctrls[num_ctrls] = op->o_tmpalloc( sizeof ( LDAPControl ), op->o_tmpmemctx );
181 for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
182 AttributeDescription *desc = a->a_desc;
183 if ( desc == slap_schema.si_ad_entryUUID ) {
184 entryuuid_bv = a->a_nvals[0];
189 /* FIXME: what if entryuuid is NULL or empty ? */
191 if ( send_cookie && cookie ) {
192 ber_printf( ber, "{eOON}",
193 entry_sync_state, &entryuuid_bv, cookie );
195 ber_printf( ber, "{eON}",
196 entry_sync_state, &entryuuid_bv );
199 ctrls[num_ctrls]->ldctl_oid = LDAP_CONTROL_SYNC_STATE;
200 ctrls[num_ctrls]->ldctl_iscritical = (op->o_sync == SLAP_CONTROL_CRITICAL);
201 ret = ber_flatten2( ber, &ctrls[num_ctrls]->ldctl_value, 1 );
206 Debug( LDAP_DEBUG_TRACE,
207 "slap_build_sync_ctrl: ber_flatten2 failed\n",
209 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
216 /* Build a LDAPsync final state control */
224 struct berval *cookie,
228 BerElementBuffer berbuf;
229 BerElement *ber = (BerElement *)&berbuf;
231 ber_init2( ber, NULL, LBER_USE_DER );
232 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
234 ctrls[num_ctrls] = op->o_tmpalloc( sizeof ( LDAPControl ), op->o_tmpmemctx );
236 ber_printf( ber, "{" );
237 if ( send_cookie && cookie ) {
238 ber_printf( ber, "O", cookie );
240 if ( refreshDeletes == LDAP_SYNC_REFRESH_DELETES ) {
241 ber_printf( ber, "b", refreshDeletes );
243 ber_printf( ber, "N}" );
245 ctrls[num_ctrls]->ldctl_oid = LDAP_CONTROL_SYNC_DONE;
246 ctrls[num_ctrls]->ldctl_iscritical = (op->o_sync == SLAP_CONTROL_CRITICAL);
247 ret = ber_flatten2( ber, &ctrls[num_ctrls]->ldctl_value, 1 );
252 Debug( LDAP_DEBUG_TRACE,
253 "syncprov_done_ctrl: ber_flatten2 failed\n",
255 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
267 struct berval *cookie,
272 BerElementBuffer berbuf;
273 BerElement *ber = (BerElement *)&berbuf;
274 struct berval rspdata;
278 ber_init2( ber, NULL, LBER_USE_DER );
279 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
283 case LDAP_TAG_SYNC_NEW_COOKIE:
284 ber_printf( ber, "tO", type, cookie );
286 case LDAP_TAG_SYNC_REFRESH_DELETE:
287 case LDAP_TAG_SYNC_REFRESH_PRESENT:
288 ber_printf( ber, "t{", type );
290 ber_printf( ber, "O", cookie );
292 if ( refreshDone == 0 ) {
293 ber_printf( ber, "b", refreshDone );
295 ber_printf( ber, "N}" );
297 case LDAP_TAG_SYNC_ID_SET:
298 ber_printf( ber, "t{", type );
300 ber_printf( ber, "O", cookie );
302 if ( refreshDeletes == 1 ) {
303 ber_printf( ber, "b", refreshDeletes );
305 ber_printf( ber, "[W]", syncUUIDs );
306 ber_printf( ber, "N}" );
309 Debug( LDAP_DEBUG_TRACE,
310 "syncprov_sendinfo: invalid syncinfo type (%d)\n",
316 ret = ber_flatten2( ber, &rspdata, 0 );
319 Debug( LDAP_DEBUG_TRACE,
320 "syncprov_sendinfo: ber_flatten2 failed\n",
322 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
326 rs->sr_rspoid = LDAP_SYNC_INFO;
327 rs->sr_rspdata = &rspdata;
328 send_ldap_intermediate( op, rs );
329 rs->sr_rspdata = NULL;
335 /* Find a modtarget in an AVL tree */
337 sp_avl_cmp( const void *c1, const void *c2 )
339 const modtarget *m1, *m2;
343 rc = m1->mt_op->o_req_ndn.bv_len - m2->mt_op->o_req_ndn.bv_len;
346 return ber_bvcmp( &m1->mt_op->o_req_ndn, &m2->mt_op->o_req_ndn );
349 /* syncprov_findbase:
350 * finds the true DN of the base of a search (with alias dereferencing) and
351 * checks to make sure the base entry doesn't get replaced with a different
352 * entry (e.g., swapping trees via ModDN, or retargeting an alias). If a
353 * change is detected, any persistent search on this base must be terminated /
355 * On the first call, we just save the DN and entryID. On subsequent calls
356 * we compare the DN and entryID with the saved values.
359 findbase_cb( Operation *op, SlapReply *rs )
361 slap_callback *sc = op->o_callback;
363 if ( rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS ) {
364 fbase_cookie *fc = sc->sc_private;
366 /* If no entryID, we're looking for the first time.
367 * Just store whatever we got.
369 if ( fc->fss->s_eid == NOID ) {
371 fc->fss->s_eid = rs->sr_entry->e_id;
372 ber_dupbv( &fc->fss->s_base, &rs->sr_entry->e_nname );
374 } else if ( rs->sr_entry->e_id == fc->fss->s_eid &&
375 dn_match( &rs->sr_entry->e_nname, &fc->fss->s_base )) {
377 /* OK, the DN is the same and the entryID is the same. */
381 if ( rs->sr_err != LDAP_SUCCESS ) {
382 Debug( LDAP_DEBUG_ANY, "findbase failed! %d\n", rs->sr_err,0,0 );
387 static Filter generic_filter = { LDAP_FILTER_PRESENT, { 0 }, NULL };
388 static struct berval generic_filterstr = BER_BVC("(objectclass=*)");
391 syncprov_findbase( Operation *op, fbase_cookie *fc )
393 opcookie *opc = op->o_callback->sc_private;
394 slap_overinst *on = opc->son;
396 /* Use basic parameters from syncrepl search, but use
397 * current op's threadctx / tmpmemctx
399 ldap_pvt_thread_mutex_lock( &fc->fss->s_mutex );
400 if ( fc->fss->s_flags & PS_FIND_BASE ) {
401 slap_callback cb = {0};
403 SlapReply frs = { REP_RESULT };
407 fc->fss->s_flags ^= PS_FIND_BASE;
408 ldap_pvt_thread_mutex_unlock( &fc->fss->s_mutex );
410 fop = *fc->fss->s_op;
412 fop.o_hdr = op->o_hdr;
414 fop.o_time = op->o_time;
415 fop.o_tincr = op->o_tincr;
416 bi = op->o_bd->bd_info;
418 cb.sc_response = findbase_cb;
421 fop.o_sync_mode = 0; /* turn off sync mode */
422 fop.o_managedsait = SLAP_CONTROL_CRITICAL;
423 fop.o_callback = &cb;
424 fop.o_tag = LDAP_REQ_SEARCH;
425 fop.ors_scope = LDAP_SCOPE_BASE;
426 fop.ors_limit = NULL;
428 fop.ors_tlimit = SLAP_NO_LIMIT;
429 fop.ors_attrs = slap_anlist_no_attrs;
430 fop.ors_attrsonly = 1;
431 fop.ors_filter = &generic_filter;
432 fop.ors_filterstr = generic_filterstr;
434 rc = overlay_op_walk( &fop, &frs, op_search, on->on_info, on );
435 op->o_bd->bd_info = bi;
437 ldap_pvt_thread_mutex_unlock( &fc->fss->s_mutex );
441 /* After the first call, see if the fdn resides in the scope */
442 if ( fc->fbase == 1 ) {
443 switch ( fc->fss->s_op->ors_scope ) {
444 case LDAP_SCOPE_BASE:
445 fc->fscope = dn_match( fc->fdn, &fc->fss->s_base );
447 case LDAP_SCOPE_ONELEVEL: {
449 dnParent( fc->fdn, &pdn );
450 fc->fscope = dn_match( &pdn, &fc->fss->s_base );
452 case LDAP_SCOPE_SUBTREE:
453 fc->fscope = dnIsSuffix( fc->fdn, &fc->fss->s_base );
455 case LDAP_SCOPE_SUBORDINATE:
456 fc->fscope = dnIsSuffix( fc->fdn, &fc->fss->s_base ) &&
457 !dn_match( fc->fdn, &fc->fss->s_base );
465 /* If entryID has changed, then the base of this search has
466 * changed. Invalidate the psearch.
468 return LDAP_NO_SUCH_OBJECT;
472 * This function has three different purposes, but they all use a search
473 * that filters on entryCSN so they're combined here.
474 * 1: at startup time, after a contextCSN has been read from the database,
475 * we search for all entries with CSN >= contextCSN in case the contextCSN
476 * was not checkpointed at the previous shutdown.
478 * 2: when the current contextCSN is known and we have a sync cookie, we search
479 * for one entry with CSN = the cookie CSN. If not found, try <= cookie CSN.
480 * If an entry is found, the cookie CSN is valid, otherwise it is stale.
482 * 3: during a refresh phase, we search for all entries with CSN <= the cookie
483 * CSN, and generate Present records for them. We always collect this result
484 * in SyncID sets, even if there's only one match.
486 typedef enum find_csn_t {
493 findmax_cb( Operation *op, SlapReply *rs )
495 if ( rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS ) {
496 struct berval *maxcsn = op->o_callback->sc_private;
497 Attribute *a = attr_find( rs->sr_entry->e_attrs,
498 slap_schema.si_ad_entryCSN );
500 if ( a && ber_bvcmp( &a->a_vals[0], maxcsn ) > 0 ) {
501 maxcsn->bv_len = a->a_vals[0].bv_len;
502 strcpy( maxcsn->bv_val, a->a_vals[0].bv_val );
509 findcsn_cb( Operation *op, SlapReply *rs )
511 slap_callback *sc = op->o_callback;
513 /* We just want to know that at least one exists, so it's OK if
514 * we exceed the unchecked limit.
516 if ( rs->sr_err == LDAP_ADMINLIMIT_EXCEEDED ||
517 (rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS )) {
518 sc->sc_private = (void *)1;
523 /* Build a list of entryUUIDs for sending in a SyncID set */
527 typedef struct fpres_cookie {
534 findpres_cb( Operation *op, SlapReply *rs )
536 slap_callback *sc = op->o_callback;
537 fpres_cookie *pc = sc->sc_private;
539 int ret = SLAP_CB_CONTINUE;
541 switch ( rs->sr_type ) {
543 a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_entryUUID );
545 pc->uuids[pc->num].bv_val = pc->last;
546 AC_MEMCPY( pc->uuids[pc->num].bv_val, a->a_nvals[0].bv_val,
547 pc->uuids[pc->num].bv_len );
549 pc->last = pc->uuids[pc->num].bv_val;
550 pc->uuids[pc->num].bv_val = NULL;
553 if ( pc->num != SLAP_SYNCUUID_SET_SIZE )
559 ret = syncprov_sendinfo( op, rs, LDAP_TAG_SYNC_ID_SET, NULL,
561 pc->uuids[pc->num].bv_val = pc->last;
563 pc->last = pc->uuids[0].bv_val;
573 syncprov_findcsn( Operation *op, find_csn_t mode )
575 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
576 syncprov_info_t *si = on->on_bi.bi_private;
578 slap_callback cb = {0};
580 SlapReply frs = { REP_RESULT };
581 char buf[LDAP_LUTIL_CSNSTR_BUFSIZE + STRLENOF("(entryCSN<=)")];
582 char cbuf[LDAP_LUTIL_CSNSTR_BUFSIZE];
583 struct berval maxcsn;
585 #ifdef LDAP_COMP_MATCH
586 AttributeAssertion eq = { NULL, BER_BVNULL, NULL };
588 AttributeAssertion eq = { NULL, BER_BVNULL };
590 fpres_cookie pcookie;
591 sync_control *srs = NULL;
592 struct slap_limits_set fc_limits;
593 int i, rc = LDAP_SUCCESS, findcsn_retry = 1;
595 if ( mode != FIND_MAXCSN ) {
596 srs = op->o_controls[slap_cids.sc_LDAPsync];
598 if ( srs->sr_state.ctxcsn.bv_len >= LDAP_LUTIL_CSNSTR_BUFSIZE ) {
604 fop.o_sync_mode &= SLAP_CONTROL_MASK; /* turn off sync_mode */
605 /* We want pure entries, not referrals */
606 fop.o_managedsait = SLAP_CONTROL_CRITICAL;
609 cf.f_av_desc = slap_schema.si_ad_entryCSN;
612 fop.o_callback = &cb;
613 fop.ors_limit = NULL;
614 fop.ors_tlimit = SLAP_NO_LIMIT;
615 fop.ors_filter = &cf;
616 fop.ors_filterstr.bv_val = buf;
621 cf.f_choice = LDAP_FILTER_GE;
622 cf.f_av_value = si->si_ctxcsn;
623 fop.ors_filterstr.bv_len = sprintf( buf, "(entryCSN>=%s)",
624 cf.f_av_value.bv_val );
625 fop.ors_attrsonly = 0;
626 fop.ors_attrs = csn_anlist;
627 fop.ors_slimit = SLAP_NO_LIMIT;
628 cb.sc_private = &maxcsn;
629 cb.sc_response = findmax_cb;
630 strcpy( cbuf, si->si_ctxcsn.bv_val );
631 maxcsn.bv_val = cbuf;
632 maxcsn.bv_len = si->si_ctxcsn.bv_len;
635 cf.f_av_value = srs->sr_state.ctxcsn;
636 /* Look for exact match the first time */
637 if ( findcsn_retry ) {
638 cf.f_choice = LDAP_FILTER_EQUALITY;
639 fop.ors_filterstr.bv_len = sprintf( buf, "(entryCSN=%s)",
640 cf.f_av_value.bv_val );
641 /* On retry, look for <= */
643 cf.f_choice = LDAP_FILTER_LE;
644 fop.ors_limit = &fc_limits;
645 memset( &fc_limits, 0, sizeof( fc_limits ));
646 fc_limits.lms_s_unchecked = 1;
647 fop.ors_filterstr.bv_len = sprintf( buf, "(entryCSN<=%s)",
648 cf.f_av_value.bv_val );
650 fop.ors_attrsonly = 1;
651 fop.ors_attrs = slap_anlist_no_attrs;
653 cb.sc_private = NULL;
654 cb.sc_response = findcsn_cb;
657 fop.ors_filter = op->ors_filter;
658 fop.ors_filterstr = op->ors_filterstr;
659 fop.ors_attrsonly = 0;
660 fop.ors_attrs = uuid_anlist;
661 fop.ors_slimit = SLAP_NO_LIMIT;
662 cb.sc_private = &pcookie;
663 cb.sc_response = findpres_cb;
666 /* preallocate storage for a full set */
667 pcookie.uuids = op->o_tmpalloc( (SLAP_SYNCUUID_SET_SIZE+1) *
668 sizeof(struct berval) + SLAP_SYNCUUID_SET_SIZE * UUID_LEN,
670 pcookie.last = (char *)(pcookie.uuids + SLAP_SYNCUUID_SET_SIZE+1);
671 pcookie.uuids[0].bv_val = pcookie.last;
672 pcookie.uuids[0].bv_len = UUID_LEN;
673 for (i=1; i<SLAP_SYNCUUID_SET_SIZE; i++) {
674 pcookie.uuids[i].bv_val = pcookie.uuids[i-1].bv_val + UUID_LEN;
675 pcookie.uuids[i].bv_len = UUID_LEN;
680 fop.o_bd->bd_info = on->on_info->oi_orig;
681 fop.o_bd->be_search( &fop, &frs );
682 fop.o_bd->bd_info = (BackendInfo *)on;
686 strcpy( si->si_ctxcsnbuf, maxcsn.bv_val );
687 si->si_ctxcsn.bv_len = maxcsn.bv_len;
690 /* If matching CSN was not found, invalidate the context. */
691 if ( !cb.sc_private ) {
692 /* If we didn't find an exact match, then try for <= */
693 if ( findcsn_retry ) {
697 rc = LDAP_NO_SUCH_OBJECT;
701 op->o_tmpfree( pcookie.uuids, op->o_tmpmemctx );
709 syncprov_free_syncop( syncops *so )
711 syncres *sr, *srnext;
712 GroupAssertion *ga, *gnext;
714 ldap_pvt_thread_mutex_lock( &so->s_mutex );
715 if ( --so->s_inuse > 0 ) {
716 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
719 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
720 if ( so->s_flags & PS_IS_DETACHED ) {
721 filter_free( so->s_op->ors_filter );
722 for ( ga = so->s_op->o_groups; ga; ga=gnext ) {
728 ch_free( so->s_base.bv_val );
729 for ( sr=so->s_res; sr; sr=srnext ) {
733 ldap_pvt_thread_mutex_destroy( &so->s_mutex );
737 /* Send a persistent search response */
739 syncprov_sendresp( Operation *op, opcookie *opc, syncops *so,
740 Entry **e, int mode )
742 slap_overinst *on = opc->son;
744 SlapReply rs = { REP_SEARCH };
745 LDAPControl *ctrls[2];
746 struct berval cookie;
748 Attribute a_uuid = {0};
750 if ( so->s_op->o_abandon )
751 return SLAPD_ABANDON;
754 slap_compose_sync_cookie( op, &cookie, &opc->sctxcsn, so->s_rid );
756 e_uuid.e_attrs = &a_uuid;
757 a_uuid.a_desc = slap_schema.si_ad_entryUUID;
758 a_uuid.a_nvals = &opc->suuid;
759 rs.sr_err = syncprov_state_ctrl( op, &rs, &e_uuid,
760 mode, ctrls, 0, 1, &cookie );
761 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
764 op->o_bd->bd_info = (BackendInfo *)on->on_info;
768 if ( rs.sr_entry->e_private )
769 rs.sr_flags = REP_ENTRY_MUSTRELEASE;
770 if ( opc->sreference ) {
771 rs.sr_ref = get_entry_referrals( op, rs.sr_entry );
772 rs.sr_err = send_search_reference( op, &rs );
773 ber_bvarray_free( rs.sr_ref );
779 case LDAP_SYNC_MODIFY:
781 if ( rs.sr_entry->e_private )
782 rs.sr_flags = REP_ENTRY_MUSTRELEASE;
783 rs.sr_attrs = op->ors_attrs;
784 rs.sr_err = send_search_entry( op, &rs );
788 case LDAP_SYNC_DELETE:
789 e_uuid.e_attrs = NULL;
790 e_uuid.e_name = opc->sdn;
791 e_uuid.e_nname = opc->sndn;
792 rs.sr_entry = &e_uuid;
793 if ( opc->sreference ) {
794 struct berval bv = BER_BVNULL;
796 rs.sr_err = send_search_reference( op, &rs );
798 rs.sr_err = send_search_entry( op, &rs );
804 /* In case someone else freed it already? */
806 op->o_tmpfree( rs.sr_ctrls[0], op->o_tmpmemctx );
813 /* Play back queued responses */
815 syncprov_qplay( Operation *op, slap_overinst *on, syncops *so )
825 ldap_pvt_thread_mutex_lock( &so->s_mutex );
828 so->s_res = sr->s_next;
830 so->s_restail = NULL;
831 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
833 if ( !sr || so->s_op->o_abandon )
837 opc.sndn = sr->s_ndn;
838 opc.suuid = sr->s_uuid;
839 opc.sctxcsn = sr->s_csn;
840 opc.sreference = sr->s_isreference;
843 if ( sr->s_mode != LDAP_SYNC_DELETE ) {
844 rc = overlay_entry_get_ov( op, &opc.sndn, NULL, NULL, 0, &e, on );
846 Debug( LDAP_DEBUG_SYNC, "syncprov_qplay: failed to get %s, "
847 "error (%d), ignoring...\n", opc.sndn.bv_val, rc, 0 );
853 rc = syncprov_sendresp( op, &opc, so, &e, sr->s_mode );
856 overlay_entry_release_ov( op, e, 0, on );
867 /* runqueue task for playing back queued responses */
869 syncprov_qtask( void *ctx, void *arg )
871 struct re_s *rtask = arg;
872 syncops *so = rtask->arg;
873 slap_overinst *on = so->s_op->o_private;
874 OperationBuffer opbuf;
879 op = (Operation *) &opbuf;
881 op->o_hdr = (Opheader *)(op+1);
882 op->o_controls = (void **)(op->o_hdr+1);
883 memset( op->o_controls, 0, SLAP_MAX_CIDS * sizeof(void *));
885 *op->o_hdr = *so->s_op->o_hdr;
887 op->o_tmpmemctx = slap_sl_mem_create(SLAP_SLAB_SIZE, SLAP_SLAB_STACK, ctx);
888 op->o_tmpmfuncs = &slap_sl_mfuncs;
889 op->o_threadctx = ctx;
891 /* syncprov_qplay expects a fake db */
892 be = *so->s_op->o_bd;
893 be.be_flags |= SLAP_DBFLAG_OVERLAY;
895 op->o_private = NULL;
896 op->o_callback = NULL;
898 rc = syncprov_qplay( op, on, so );
900 /* decrement use count... */
901 syncprov_free_syncop( so );
903 /* wait until we get explicitly scheduled again */
904 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
905 ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
907 ldap_pvt_runqueue_resched( &slapd_rq, rtask, 1 );
909 /* bail out on any error */
910 ldap_pvt_runqueue_remove( &slapd_rq, rtask );
912 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
917 /* Start the task to play back queued psearch responses */
919 syncprov_qstart( syncops *so )
922 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
923 if ( !so->s_qtask ) {
924 so->s_qtask = ldap_pvt_runqueue_insert( &slapd_rq, RUNQ_INTERVAL,
925 syncprov_qtask, so, "syncprov_qtask",
926 so->s_op->o_conn->c_peer_name.bv_val );
930 if (!ldap_pvt_runqueue_isrunning( &slapd_rq, so->s_qtask ) &&
931 !so->s_qtask->next_sched.tv_sec ) {
932 so->s_qtask->interval.tv_sec = 0;
933 ldap_pvt_runqueue_resched( &slapd_rq, so->s_qtask, 0 );
934 so->s_qtask->interval.tv_sec = RUNQ_INTERVAL;
939 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
941 slap_wake_listener();
944 /* Queue a persistent search response */
946 syncprov_qresp( opcookie *opc, syncops *so, int mode )
950 sr = ch_malloc(sizeof(syncres) + opc->suuid.bv_len + 1 +
951 opc->sdn.bv_len + 1 + opc->sndn.bv_len + 1 + opc->sctxcsn.bv_len + 1 );
953 sr->s_dn.bv_val = (char *)(sr + 1);
954 sr->s_dn.bv_len = opc->sdn.bv_len;
956 sr->s_isreference = opc->sreference;
957 sr->s_ndn.bv_val = lutil_strcopy( sr->s_dn.bv_val,
958 opc->sdn.bv_val ) + 1;
959 sr->s_ndn.bv_len = opc->sndn.bv_len;
960 sr->s_uuid.bv_val = lutil_strcopy( sr->s_ndn.bv_val,
961 opc->sndn.bv_val ) + 1;
962 sr->s_uuid.bv_len = opc->suuid.bv_len;
963 AC_MEMCPY( sr->s_uuid.bv_val, opc->suuid.bv_val, opc->suuid.bv_len );
964 sr->s_csn.bv_val = sr->s_uuid.bv_val + sr->s_uuid.bv_len + 1;
965 sr->s_csn.bv_len = opc->sctxcsn.bv_len;
966 strcpy( sr->s_csn.bv_val, opc->sctxcsn.bv_val );
968 ldap_pvt_thread_mutex_lock( &so->s_mutex );
972 so->s_restail->s_next = sr;
976 /* If the base of the psearch was modified, check it next time round */
977 if ( so->s_flags & PS_WROTE_BASE ) {
978 so->s_flags ^= PS_WROTE_BASE;
979 so->s_flags |= PS_FIND_BASE;
981 if ( so->s_flags & PS_IS_DETACHED ) {
982 syncprov_qstart( so );
984 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
989 syncprov_drop_psearch( syncops *so, int lock )
991 if ( so->s_flags & PS_IS_DETACHED ) {
993 ldap_pvt_thread_mutex_lock( &so->s_op->o_conn->c_mutex );
994 so->s_op->o_conn->c_n_ops_executing--;
995 so->s_op->o_conn->c_n_ops_completed++;
996 LDAP_STAILQ_REMOVE( &so->s_op->o_conn->c_ops, so->s_op, slap_op,
999 ldap_pvt_thread_mutex_unlock( &so->s_op->o_conn->c_mutex );
1001 syncprov_free_syncop( so );
1007 syncprov_ab_cleanup( Operation *op, SlapReply *rs )
1009 slap_callback *sc = op->o_callback;
1010 op->o_callback = sc->sc_next;
1011 syncprov_drop_psearch( op->o_callback->sc_private, 0 );
1012 op->o_tmpfree( sc, op->o_tmpmemctx );
1017 syncprov_op_abandon( Operation *op, SlapReply *rs )
1019 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1020 syncprov_info_t *si = on->on_bi.bi_private;
1021 syncops *so, *soprev;
1023 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1024 for ( so=si->si_ops, soprev = (syncops *)&si->si_ops; so;
1025 soprev=so, so=so->s_next ) {
1026 if ( so->s_op->o_connid == op->o_connid &&
1027 so->s_op->o_msgid == op->orn_msgid ) {
1028 so->s_op->o_abandon = 1;
1029 soprev->s_next = so->s_next;
1033 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1035 /* Is this really a Cancel exop? */
1036 if ( op->o_tag != LDAP_REQ_ABANDON ) {
1037 so->s_op->o_cancel = SLAP_CANCEL_ACK;
1038 rs->sr_err = LDAP_CANCELLED;
1039 send_ldap_result( so->s_op, rs );
1040 if ( so->s_flags & PS_IS_DETACHED ) {
1042 cb = op->o_tmpcalloc( 1, sizeof(slap_callback), op->o_tmpmemctx );
1043 cb->sc_cleanup = syncprov_ab_cleanup;
1044 cb->sc_next = op->o_callback;
1045 cb->sc_private = so;
1046 return SLAP_CB_CONTINUE;
1049 syncprov_drop_psearch( so, 0 );
1051 return SLAP_CB_CONTINUE;
1054 /* Find which persistent searches are affected by this operation */
1056 syncprov_matchops( Operation *op, opcookie *opc, int saveit )
1058 slap_overinst *on = opc->son;
1059 syncprov_info_t *si = on->on_bi.bi_private;
1062 syncops *ss, *sprev, *snext;
1066 struct berval newdn;
1068 BackendDB *b0 = op->o_bd, db;
1070 fc.fdn = &op->o_req_ndn;
1071 /* compute new DN */
1072 if ( op->o_tag == LDAP_REQ_MODRDN && !saveit ) {
1074 if ( op->orr_nnewSup ) pdn = *op->orr_nnewSup;
1075 else dnParent( fc.fdn, &pdn );
1076 build_new_dn( &newdn, &pdn, &op->orr_nnewrdn, op->o_tmpmemctx );
1080 if ( op->o_tag != LDAP_REQ_ADD ) {
1081 if ( !SLAP_ISOVERLAY( op->o_bd )) {
1085 rc = overlay_entry_get_ov( op, fc.fdn, NULL, NULL, 0, &e, on );
1086 /* If we're sending responses now, make a copy and unlock the DB */
1087 if ( e && !saveit ) {
1088 Entry *e2 = entry_dup( e );
1089 overlay_entry_release_ov( op, e, 0, on );
1100 if ( saveit || op->o_tag == LDAP_REQ_ADD ) {
1101 ber_dupbv_x( &opc->sdn, &e->e_name, op->o_tmpmemctx );
1102 ber_dupbv_x( &opc->sndn, &e->e_nname, op->o_tmpmemctx );
1103 opc->sreference = is_entry_referral( e );
1104 a = attr_find( e->e_attrs, slap_schema.si_ad_entryUUID );
1106 ber_dupbv_x( &opc->suuid, &a->a_nvals[0], op->o_tmpmemctx );
1107 } else if ( op->o_tag == LDAP_REQ_MODRDN && !saveit ) {
1108 op->o_tmpfree( opc->sndn.bv_val, op->o_tmpmemctx );
1109 op->o_tmpfree( opc->sdn.bv_val, op->o_tmpmemctx );
1110 ber_dupbv_x( &opc->sdn, &e->e_name, op->o_tmpmemctx );
1111 ber_dupbv_x( &opc->sndn, &e->e_nname, op->o_tmpmemctx );
1114 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1115 for (ss = si->si_ops, sprev = (syncops *)&si->si_ops; ss;
1116 sprev = ss, ss=snext)
1127 /* If the base of the search is missing, signal a refresh */
1128 rc = syncprov_findbase( op, &fc );
1129 if ( rc != LDAP_SUCCESS ) {
1130 SlapReply rs = {REP_RESULT};
1131 send_ldap_error( ss->s_op, &rs, LDAP_SYNC_REFRESH_REQUIRED,
1132 "search base has changed" );
1133 sprev->s_next = snext;
1134 syncprov_drop_psearch( ss, 1 );
1140 /* If we're sending results now, look for this op in old matches */
1144 /* Did we modify the search base? */
1145 if ( dn_match( &op->o_req_ndn, &ss->s_base )) {
1146 ldap_pvt_thread_mutex_lock( &ss->s_mutex );
1147 ss->s_flags |= PS_WROTE_BASE;
1148 ldap_pvt_thread_mutex_unlock( &ss->s_mutex );
1151 for ( sm=opc->smatches, old=(syncmatches *)&opc->smatches; sm;
1152 old=sm, sm=sm->sm_next ) {
1153 if ( sm->sm_op == ss ) {
1155 old->sm_next = sm->sm_next;
1156 op->o_tmpfree( sm, op->o_tmpmemctx );
1162 /* check if current o_req_dn is in scope and matches filter */
1163 if ( fc.fscope && test_filter( op, e, ss->s_op->ors_filter ) ==
1164 LDAP_COMPARE_TRUE ) {
1166 sm = op->o_tmpalloc( sizeof(syncmatches), op->o_tmpmemctx );
1167 sm->sm_next = opc->smatches;
1169 ldap_pvt_thread_mutex_lock( &ss->s_mutex );
1171 ldap_pvt_thread_mutex_unlock( &ss->s_mutex );
1174 /* if found send UPDATE else send ADD */
1175 syncprov_qresp( opc, ss,
1176 found ? LDAP_SYNC_MODIFY : LDAP_SYNC_ADD );
1178 } else if ( !saveit && found ) {
1180 syncprov_qresp( opc, ss, LDAP_SYNC_DELETE );
1183 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1185 if ( op->o_tag != LDAP_REQ_ADD && e ) {
1186 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1187 be_entry_release_rw( op, e, 0 );
1188 op->o_bd->bd_info = (BackendInfo *)on;
1191 op->o_tmpfree( fc.fdn->bv_val, op->o_tmpmemctx );
1197 syncprov_op_cleanup( Operation *op, SlapReply *rs )
1199 slap_callback *cb = op->o_callback;
1200 opcookie *opc = cb->sc_private;
1201 slap_overinst *on = opc->son;
1202 syncprov_info_t *si = on->on_bi.bi_private;
1203 syncmatches *sm, *snext;
1204 modtarget *mt, mtdummy;
1206 for (sm = opc->smatches; sm; sm=snext) {
1207 snext = sm->sm_next;
1208 syncprov_free_syncop( sm->sm_op );
1209 op->o_tmpfree( sm, op->o_tmpmemctx );
1212 /* Remove op from lock table */
1214 ldap_pvt_thread_mutex_lock( &si->si_mods_mutex );
1215 mt = avl_find( si->si_mods, &mtdummy, sp_avl_cmp );
1217 modinst *mi = mt->mt_mods;
1219 /* If there are more, promote the next one */
1220 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
1221 if ( mi->mi_next ) {
1222 mt->mt_mods = mi->mi_next;
1223 mt->mt_op = mt->mt_mods->mi_op;
1224 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1226 avl_delete( &si->si_mods, mt, sp_avl_cmp );
1227 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1228 ldap_pvt_thread_mutex_destroy( &mt->mt_mutex );
1232 ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
1233 if ( !BER_BVISNULL( &opc->suuid ))
1234 op->o_tmpfree( opc->suuid.bv_val, op->o_tmpmemctx );
1235 if ( !BER_BVISNULL( &opc->sndn ))
1236 op->o_tmpfree( opc->sndn.bv_val, op->o_tmpmemctx );
1237 if ( !BER_BVISNULL( &opc->sdn ))
1238 op->o_tmpfree( opc->sdn.bv_val, op->o_tmpmemctx );
1239 op->o_callback = cb->sc_next;
1240 op->o_tmpfree(cb, op->o_tmpmemctx);
1246 syncprov_checkpoint( Operation *op, SlapReply *rs, slap_overinst *on )
1248 syncprov_info_t *si = on->on_bi.bi_private;
1251 SlapReply rsm = { 0 };
1252 struct berval bv[2];
1253 slap_callback cb = {0};
1255 /* If ctxcsn is empty, delete it */
1256 if ( BER_BVISEMPTY( &si->si_ctxcsn )) {
1257 mod.sml_values = NULL;
1259 mod.sml_values = bv;
1260 bv[1].bv_val = NULL;
1261 bv[0] = si->si_ctxcsn;
1263 mod.sml_nvalues = NULL;
1264 mod.sml_desc = slap_schema.si_ad_contextCSN;
1265 mod.sml_op = LDAP_MOD_REPLACE;
1267 mod.sml_next = NULL;
1269 cb.sc_response = slap_null_cb;
1271 opm.o_tag = LDAP_REQ_MODIFY;
1272 opm.o_callback = &cb;
1273 opm.orm_modlist = &mod;
1274 opm.o_req_dn = op->o_bd->be_suffix[0];
1275 opm.o_req_ndn = op->o_bd->be_nsuffix[0];
1276 opm.o_bd->bd_info = on->on_info->oi_orig;
1277 opm.o_managedsait = SLAP_CONTROL_NONCRITICAL;
1278 SLAP_DBFLAGS( opm.o_bd ) |= SLAP_DBFLAG_NOLASTMOD;
1279 opm.o_bd->be_modify( &opm, &rsm );
1280 SLAP_DBFLAGS( opm.o_bd ) ^= SLAP_DBFLAG_NOLASTMOD;
1281 if ( mod.sml_next != NULL ) {
1282 slap_mods_free( mod.sml_next, 1 );
1287 syncprov_add_slog( Operation *op )
1289 opcookie *opc = op->o_callback->sc_private;
1290 slap_overinst *on = opc->son;
1291 syncprov_info_t *si = on->on_bi.bi_private;
1297 /* Allocate a record. UUIDs are not NUL-terminated. */
1298 se = ch_malloc( sizeof( slog_entry ) + opc->suuid.bv_len +
1299 op->o_csn.bv_len + 1 );
1301 se->se_tag = op->o_tag;
1303 se->se_uuid.bv_val = (char *)(&se[1]);
1304 AC_MEMCPY( se->se_uuid.bv_val, opc->suuid.bv_val, opc->suuid.bv_len );
1305 se->se_uuid.bv_len = opc->suuid.bv_len;
1307 se->se_csn.bv_val = se->se_uuid.bv_val + opc->suuid.bv_len;
1308 AC_MEMCPY( se->se_csn.bv_val, op->o_csn.bv_val, op->o_csn.bv_len );
1309 se->se_csn.bv_val[op->o_csn.bv_len] = '\0';
1310 se->se_csn.bv_len = op->o_csn.bv_len;
1312 ldap_pvt_thread_mutex_lock( &sl->sl_mutex );
1313 if ( sl->sl_head ) {
1314 sl->sl_tail->se_next = se;
1320 while ( sl->sl_num > sl->sl_size ) {
1322 sl->sl_head = se->se_next;
1323 strcpy( sl->sl_mincsn.bv_val, se->se_csn.bv_val );
1324 sl->sl_mincsn.bv_len = se->se_csn.bv_len;
1328 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1332 /* Just set a flag if we found the matching entry */
1334 playlog_cb( Operation *op, SlapReply *rs )
1336 if ( rs->sr_type == REP_SEARCH ) {
1337 op->o_callback->sc_private = (void *)1;
1342 /* enter with sl->sl_mutex locked, release before returning */
1344 syncprov_playlog( Operation *op, SlapReply *rs, sessionlog *sl,
1345 sync_control *srs, struct berval *ctxcsn )
1347 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1349 int i, j, ndel, num, nmods, mmods;
1350 char cbuf[LDAP_LUTIL_CSNSTR_BUFSIZE];
1352 struct berval delcsn;
1354 if ( !sl->sl_num ) {
1355 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1363 uuids = op->o_tmpalloc( (num+1) * sizeof( struct berval ) +
1364 num * UUID_LEN, op->o_tmpmemctx );
1365 uuids[0].bv_val = (char *)(uuids + num + 1);
1368 delcsn.bv_val = cbuf;
1370 /* Make a copy of the relevant UUIDs. Put the Deletes up front
1371 * and everything else at the end. Do this first so we can
1372 * unlock the list mutex.
1374 Debug( LDAP_DEBUG_SYNC, "srs csn %s\n", srs->sr_state.ctxcsn.bv_val, 0, 0 );
1375 for ( se=sl->sl_head; se; se=se->se_next ) {
1376 Debug( LDAP_DEBUG_SYNC, "log csn %s\n", se->se_csn.bv_val, 0, 0 );
1377 ndel = ber_bvcmp( &se->se_csn, &srs->sr_state.ctxcsn );
1379 Debug( LDAP_DEBUG_SYNC, "cmp %d, too old\n", ndel, 0, 0 );
1382 ndel = ber_bvcmp( &se->se_csn, ctxcsn );
1384 Debug( LDAP_DEBUG_SYNC, "cmp %d, too new\n", ndel, 0, 0 );
1387 if ( se->se_tag == LDAP_REQ_DELETE ) {
1390 AC_MEMCPY( cbuf, se->se_csn.bv_val, se->se_csn.bv_len );
1391 delcsn.bv_len = se->se_csn.bv_len;
1392 delcsn.bv_val[delcsn.bv_len] = '\0';
1397 uuids[j].bv_val = uuids[0].bv_val + (j * UUID_LEN);
1398 AC_MEMCPY(uuids[j].bv_val, se->se_uuid.bv_val, UUID_LEN);
1399 uuids[j].bv_len = UUID_LEN;
1401 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1405 /* Zero out unused slots */
1406 for ( i=ndel; i < num - nmods; i++ )
1407 uuids[i].bv_len = 0;
1409 /* Mods must be validated to see if they belong in this delete set.
1413 /* Strip any duplicates */
1414 for ( i=0; i<nmods; i++ ) {
1415 for ( j=0; j<ndel; j++ ) {
1416 if ( bvmatch( &uuids[j], &uuids[num - 1 - i] )) {
1417 uuids[num - 1 - i].bv_len = 0;
1422 if ( uuids[num - 1 - i].bv_len == 0 ) continue;
1423 for ( j=0; j<i; j++ ) {
1424 if ( bvmatch( &uuids[num - 1 - j], &uuids[num - 1 - i] )) {
1425 uuids[num - 1 - i].bv_len = 0;
1434 SlapReply frs = { REP_RESULT };
1437 #ifdef LDAP_COMP_MATCH
1438 AttributeAssertion eq = { NULL, BER_BVNULL, NULL };
1440 AttributeAssertion eq;
1442 slap_callback cb = {0};
1446 fop.o_sync_mode = 0;
1447 fop.o_callback = &cb;
1448 fop.ors_limit = NULL;
1449 fop.ors_tlimit = SLAP_NO_LIMIT;
1450 fop.ors_attrs = slap_anlist_all_attributes;
1451 fop.ors_attrsonly = 0;
1452 fop.o_managedsait = SLAP_CONTROL_CRITICAL;
1454 af.f_choice = LDAP_FILTER_AND;
1457 mf.f_choice = LDAP_FILTER_EQUALITY;
1459 mf.f_av_desc = slap_schema.si_ad_entryUUID;
1460 mf.f_next = fop.ors_filter;
1462 fop.ors_filter = ⁡
1464 cb.sc_response = playlog_cb;
1465 fop.o_bd->bd_info = on->on_info->oi_orig;
1467 for ( i=ndel; i<num; i++ ) {
1468 if ( uuids[i].bv_len == 0 ) continue;
1470 mf.f_av_value = uuids[i];
1471 cb.sc_private = NULL;
1473 frs.sr_nentries = 0;
1474 rc = fop.o_bd->be_search( &fop, &frs );
1476 /* If entry was not found, add to delete list */
1477 if ( !cb.sc_private ) {
1478 uuids[ndel++] = uuids[i];
1481 fop.o_bd->bd_info = (BackendInfo *)on;
1484 struct berval cookie;
1486 slap_compose_sync_cookie( op, &cookie, &delcsn, srs->sr_state.rid );
1487 uuids[ndel].bv_val = NULL;
1488 syncprov_sendinfo( op, rs, LDAP_TAG_SYNC_ID_SET, &cookie, 0, uuids, 1 );
1489 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
1491 op->o_tmpfree( uuids, op->o_tmpmemctx );
1495 syncprov_op_response( Operation *op, SlapReply *rs )
1497 opcookie *opc = op->o_callback->sc_private;
1498 slap_overinst *on = opc->son;
1499 syncprov_info_t *si = on->on_bi.bi_private;
1502 if ( rs->sr_err == LDAP_SUCCESS )
1504 struct berval maxcsn = BER_BVNULL;
1505 char cbuf[LDAP_LUTIL_CSNSTR_BUFSIZE];
1508 /* Update our context CSN */
1510 ldap_pvt_thread_rdwr_wlock( &si->si_csn_rwlock );
1511 slap_get_commit_csn( op, &maxcsn );
1512 if ( !BER_BVISNULL( &maxcsn ) ) {
1513 strcpy( cbuf, maxcsn.bv_val );
1514 if ( ber_bvcmp( &maxcsn, &si->si_ctxcsn ) > 0 ) {
1515 strcpy( si->si_ctxcsnbuf, cbuf );
1516 si->si_ctxcsn.bv_len = maxcsn.bv_len;
1520 /* Don't do any processing for consumer contextCSN updates */
1521 if ( SLAP_SYNC_SHADOW( op->o_bd ) &&
1522 op->o_msgid == SLAP_SYNC_UPDATE_MSGID ) {
1523 ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
1524 return SLAP_CB_CONTINUE;
1528 if ( si->si_chkops || si->si_chktime ) {
1529 if ( si->si_chkops && si->si_numops >= si->si_chkops ) {
1533 if ( si->si_chktime &&
1534 (op->o_time - si->si_chklast >= si->si_chktime )) {
1536 si->si_chklast = op->o_time;
1539 ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
1542 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
1543 syncprov_checkpoint( op, rs, on );
1544 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
1547 opc->sctxcsn.bv_len = maxcsn.bv_len;
1548 opc->sctxcsn.bv_val = cbuf;
1550 /* Handle any persistent searches */
1554 case LDAP_REQ_MODIFY:
1555 case LDAP_REQ_MODRDN:
1556 case LDAP_REQ_EXTENDED:
1557 syncprov_matchops( op, opc, 0 );
1559 case LDAP_REQ_DELETE:
1560 /* for each match in opc->smatches:
1563 for ( sm = opc->smatches; sm; sm=sm->sm_next ) {
1564 if ( sm->sm_op->s_op->o_abandon )
1566 syncprov_qresp( opc, sm->sm_op, LDAP_SYNC_DELETE );
1572 /* Add any log records */
1573 if ( si->si_logs && op->o_tag != LDAP_REQ_ADD ) {
1574 syncprov_add_slog( op );
1578 return SLAP_CB_CONTINUE;
1581 /* We don't use a subentry to store the context CSN any more.
1582 * We expose the current context CSN as an operational attribute
1583 * of the suffix entry.
1586 syncprov_op_compare( Operation *op, SlapReply *rs )
1588 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1589 syncprov_info_t *si = on->on_bi.bi_private;
1590 int rc = SLAP_CB_CONTINUE;
1592 if ( dn_match( &op->o_req_ndn, op->o_bd->be_nsuffix ) &&
1593 op->oq_compare.rs_ava->aa_desc == slap_schema.si_ad_contextCSN )
1597 struct berval bv[2];
1599 e.e_name = op->o_bd->be_suffix[0];
1600 e.e_nname = op->o_bd->be_nsuffix[0];
1602 BER_BVZERO( &bv[1] );
1603 bv[0] = si->si_ctxcsn;
1605 a.a_desc = slap_schema.si_ad_contextCSN;
1607 a.a_nvals = a.a_vals;
1609 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
1611 rs->sr_err = access_allowed( op, &e, op->oq_compare.rs_ava->aa_desc,
1612 &op->oq_compare.rs_ava->aa_value, ACL_COMPARE, NULL );
1613 if ( ! rs->sr_err ) {
1614 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1615 goto return_results;
1618 if ( get_assert( op ) &&
1619 ( test_filter( op, &e, get_assertion( op ) ) != LDAP_COMPARE_TRUE ) )
1621 rs->sr_err = LDAP_ASSERTION_FAILED;
1622 goto return_results;
1626 rs->sr_err = LDAP_COMPARE_FALSE;
1628 if ( value_find_ex( op->oq_compare.rs_ava->aa_desc,
1629 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
1630 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
1631 a.a_nvals, &op->oq_compare.rs_ava->aa_value, op->o_tmpmemctx ) == 0 )
1633 rs->sr_err = LDAP_COMPARE_TRUE;
1638 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
1640 send_ldap_result( op, rs );
1642 if( rs->sr_err == LDAP_COMPARE_FALSE || rs->sr_err == LDAP_COMPARE_TRUE ) {
1643 rs->sr_err = LDAP_SUCCESS;
1652 syncprov_op_mod( Operation *op, SlapReply *rs )
1654 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1655 syncprov_info_t *si = on->on_bi.bi_private;
1657 slap_callback *cb = op->o_tmpcalloc(1, sizeof(slap_callback)+
1659 (si->si_ops ? sizeof(modinst) : 0 ),
1661 opcookie *opc = (opcookie *)(cb+1);
1663 cb->sc_response = syncprov_op_response;
1664 cb->sc_cleanup = syncprov_op_cleanup;
1665 cb->sc_private = opc;
1666 cb->sc_next = op->o_callback;
1667 op->o_callback = cb;
1669 /* If there are active persistent searches, lock this operation.
1670 * See seqmod.c for the locking logic on its own.
1673 modtarget *mt, mtdummy;
1676 mi = (modinst *)(opc+1);
1679 /* See if we're already modifying this entry... */
1681 ldap_pvt_thread_mutex_lock( &si->si_mods_mutex );
1682 mt = avl_find( si->si_mods, &mtdummy, sp_avl_cmp );
1684 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
1685 ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
1686 mt->mt_tail->mi_next = mi;
1688 /* wait for this op to get to head of list */
1689 while ( mt->mt_mods != mi ) {
1690 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1691 ldap_pvt_thread_yield();
1692 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
1694 /* clean up if the caller is giving up */
1695 if ( op->o_abandon ) {
1697 for ( m2 = mt->mt_mods; m2->mi_next != mi;
1699 m2->mi_next = mi->mi_next;
1700 if ( mt->mt_tail == mi ) mt->mt_tail = m2;
1701 op->o_tmpfree( cb, op->o_tmpmemctx );
1702 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1703 return SLAPD_ABANDON;
1706 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1708 /* Record that we're modifying this entry now */
1709 mt = ch_malloc( sizeof(modtarget) );
1712 mt->mt_op = mi->mi_op;
1713 ldap_pvt_thread_mutex_init( &mt->mt_mutex );
1714 avl_insert( &si->si_mods, mt, sp_avl_cmp, avl_dup_error );
1715 ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
1719 if (( si->si_ops || si->si_logs ) && op->o_tag != LDAP_REQ_ADD )
1720 syncprov_matchops( op, opc, 1 );
1722 return SLAP_CB_CONTINUE;
1726 syncprov_op_extended( Operation *op, SlapReply *rs )
1728 if ( exop_is_write( op ))
1729 return syncprov_op_mod( op, rs );
1731 return SLAP_CB_CONTINUE;
1734 typedef struct searchstate {
1735 slap_overinst *ss_on;
1738 struct berval ss_ctxcsn;
1739 char ss_csnbuf[LDAP_LUTIL_CSNSTR_BUFSIZE];
1743 syncprov_search_cleanup( Operation *op, SlapReply *rs )
1745 if ( rs->sr_ctrls ) {
1746 op->o_tmpfree( rs->sr_ctrls[0], op->o_tmpmemctx );
1747 op->o_tmpfree( rs->sr_ctrls, op->o_tmpmemctx );
1748 rs->sr_ctrls = NULL;
1754 syncprov_detach_op( Operation *op, syncops *so, slap_overinst *on )
1760 GroupAssertion *g1, *g2;
1762 /* count the search attrs */
1763 for (i=0; op->ors_attrs && !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++) {
1764 alen += op->ors_attrs[i].an_name.bv_len + 1;
1766 /* Make a new copy of the operation */
1767 size = sizeof(Operation) + sizeof(Opheader) +
1768 (i ? ( (i+1) * sizeof(AttributeName) + alen) : 0) +
1769 op->o_req_dn.bv_len + 1 +
1770 op->o_req_ndn.bv_len + 1 +
1771 op->o_ndn.bv_len + 1 +
1772 so->s_filterstr.bv_len + 1;
1773 op2 = (Operation *)ch_calloc( 1, size );
1774 op2->o_hdr = (Opheader *)(op2+1);
1776 /* Copy the fields we care about explicitly, leave the rest alone */
1777 *op2->o_hdr = *op->o_hdr;
1778 op2->o_tag = op->o_tag;
1779 op2->o_time = op->o_time;
1780 op2->o_bd = on->on_info->oi_origdb;
1781 op2->o_request = op->o_request;
1782 op2->o_private = on;
1785 op2->ors_attrs = (AttributeName *)(op2->o_hdr + 1);
1786 ptr = (char *)(op2->ors_attrs+i+1);
1787 for (i=0; !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++) {
1788 op2->ors_attrs[i] = op->ors_attrs[i];
1789 op2->ors_attrs[i].an_name.bv_val = ptr;
1790 ptr = lutil_strcopy( ptr, op->ors_attrs[i].an_name.bv_val ) + 1;
1792 BER_BVZERO( &op2->ors_attrs[i].an_name );
1794 ptr = (char *)(op2->o_hdr + 1);
1796 op2->o_authz = op->o_authz;
1797 op2->o_ndn.bv_val = ptr;
1798 ptr = lutil_strcopy(ptr, op->o_ndn.bv_val) + 1;
1799 op2->o_dn = op2->o_ndn;
1800 op2->o_req_dn.bv_len = op->o_req_dn.bv_len;
1801 op2->o_req_dn.bv_val = ptr;
1802 ptr = lutil_strcopy(ptr, op->o_req_dn.bv_val) + 1;
1803 op2->o_req_ndn.bv_len = op->o_req_ndn.bv_len;
1804 op2->o_req_ndn.bv_val = ptr;
1805 ptr = lutil_strcopy(ptr, op->o_req_ndn.bv_val) + 1;
1806 op2->ors_filterstr.bv_val = ptr;
1807 strcpy( ptr, so->s_filterstr.bv_val );
1808 op2->ors_filterstr.bv_len = so->s_filterstr.bv_len;
1810 /* Skip the AND/GE clause that we stuck on in front */
1811 if ( so->s_flags & PS_FIX_FILTER ) {
1812 op2->ors_filter = op->ors_filter->f_and->f_next;
1813 so->s_flags ^= PS_FIX_FILTER;
1815 op2->ors_filter = op->ors_filter;
1817 op2->ors_filter = filter_dup( op2->ors_filter, NULL );
1820 /* Copy any cached group ACLs individually */
1821 op2->o_groups = NULL;
1822 for ( g1=op->o_groups; g1; g1=g1->ga_next ) {
1823 g2 = ch_malloc( sizeof(GroupAssertion) + g1->ga_len );
1825 strcpy( g2->ga_ndn, g1->ga_ndn );
1826 g2->ga_next = op2->o_groups;
1829 /* Don't allow any further group caching */
1830 op2->o_do_not_cache = 1;
1832 /* Add op2 to conn so abandon will find us */
1833 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1834 op->o_conn->c_n_ops_executing++;
1835 op->o_conn->c_n_ops_completed--;
1836 LDAP_STAILQ_INSERT_TAIL( &op->o_conn->c_ops, op2, o_next );
1837 so->s_flags |= PS_IS_DETACHED;
1838 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1840 /* Prevent anyone else from trying to send a result for this op */
1845 syncprov_search_response( Operation *op, SlapReply *rs )
1847 searchstate *ss = op->o_callback->sc_private;
1848 slap_overinst *on = ss->ss_on;
1849 sync_control *srs = op->o_controls[slap_cids.sc_LDAPsync];
1851 if ( rs->sr_type == REP_SEARCH || rs->sr_type == REP_SEARCHREF ) {
1853 /* If we got a referral without a referral object, there's
1854 * something missing that we cannot replicate. Just ignore it.
1855 * The consumer will abort because we didn't send the expected
1858 if ( !rs->sr_entry ) {
1859 assert( rs->sr_entry != NULL );
1860 Debug( LDAP_DEBUG_ANY, "bogus referral in context\n",0,0,0 );
1861 return SLAP_CB_CONTINUE;
1863 a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_entryCSN );
1864 if ( a == NULL && rs->sr_operational_attrs != NULL ) {
1865 a = attr_find( rs->sr_operational_attrs, slap_schema.si_ad_entryCSN );
1868 /* Make sure entry is less than the snapshot'd contextCSN */
1869 if ( ber_bvcmp( &a->a_nvals[0], &ss->ss_ctxcsn ) > 0 ) {
1870 Debug( LDAP_DEBUG_SYNC, "Entry %s CSN %s greater than snapshot %s\n",
1871 rs->sr_entry->e_name.bv_val,
1872 a->a_nvals[0].bv_val,
1873 ss->ss_ctxcsn.bv_val );
1874 return LDAP_SUCCESS;
1877 /* Don't send the ctx entry twice */
1878 if ( !BER_BVISNULL( &srs->sr_state.ctxcsn ) &&
1879 bvmatch( &a->a_nvals[0], &srs->sr_state.ctxcsn ) ) {
1880 Debug( LDAP_DEBUG_SYNC, "Entry %s CSN %s matches ctx %s\n",
1881 rs->sr_entry->e_name.bv_val,
1882 a->a_nvals[0].bv_val,
1883 srs->sr_state.ctxcsn.bv_val );
1884 return LDAP_SUCCESS;
1887 rs->sr_ctrls = op->o_tmpalloc( sizeof(LDAPControl *)*2,
1889 rs->sr_ctrls[1] = NULL;
1890 rs->sr_err = syncprov_state_ctrl( op, rs, rs->sr_entry,
1891 LDAP_SYNC_ADD, rs->sr_ctrls, 0, 0, NULL );
1892 } else if ( rs->sr_type == REP_RESULT && rs->sr_err == LDAP_SUCCESS ) {
1893 struct berval cookie;
1895 slap_compose_sync_cookie( op, &cookie, &ss->ss_ctxcsn,
1896 srs->sr_state.rid );
1898 /* Is this a regular refresh? */
1900 rs->sr_ctrls = op->o_tmpalloc( sizeof(LDAPControl *)*2,
1902 rs->sr_ctrls[1] = NULL;
1903 rs->sr_err = syncprov_done_ctrl( op, rs, rs->sr_ctrls,
1904 0, 1, &cookie, ss->ss_present ? LDAP_SYNC_REFRESH_PRESENTS :
1905 LDAP_SYNC_REFRESH_DELETES );
1906 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
1908 /* It's RefreshAndPersist, transition to Persist phase */
1909 syncprov_sendinfo( op, rs, ss->ss_present ?
1910 LDAP_TAG_SYNC_REFRESH_PRESENT : LDAP_TAG_SYNC_REFRESH_DELETE,
1911 &cookie, 1, NULL, 0 );
1912 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
1914 /* Detach this Op from frontend control */
1915 ldap_pvt_thread_mutex_lock( &ss->ss_so->s_mutex );
1917 /* Turn off the refreshing flag */
1918 ss->ss_so->s_flags ^= PS_IS_REFRESHING;
1920 syncprov_detach_op( op, ss->ss_so, on );
1922 /* If there are queued responses, fire them off */
1923 if ( ss->ss_so->s_res )
1924 syncprov_qstart( ss->ss_so );
1925 ldap_pvt_thread_mutex_unlock( &ss->ss_so->s_mutex );
1927 return LDAP_SUCCESS;
1931 return SLAP_CB_CONTINUE;
1935 syncprov_op_search( Operation *op, SlapReply *rs )
1937 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1938 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
1940 int gotstate = 0, nochange = 0, do_present;
1941 syncops *sop = NULL;
1944 struct berval ctxcsn;
1945 char csnbuf[LDAP_LUTIL_CSNSTR_BUFSIZE];
1947 if ( !(op->o_sync_mode & SLAP_SYNC_REFRESH) ) return SLAP_CB_CONTINUE;
1949 if ( op->ors_deref & LDAP_DEREF_SEARCHING ) {
1950 send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR, "illegal value for derefAliases" );
1954 do_present = si->si_nopres ? 0 : 1;
1956 srs = op->o_controls[slap_cids.sc_LDAPsync];
1957 op->o_managedsait = SLAP_CONTROL_NONCRITICAL;
1959 /* If this is a persistent search, set it up right away */
1960 if ( op->o_sync_mode & SLAP_SYNC_PERSIST ) {
1970 so.s_flags = PS_IS_REFRESHING | PS_FIND_BASE;
1971 /* syncprov_findbase expects to be called as a callback... */
1972 sc.sc_private = &opc;
1974 ldap_pvt_thread_mutex_init( &so.s_mutex );
1975 cb = op->o_callback;
1976 op->o_callback = ≻
1977 rs->sr_err = syncprov_findbase( op, &fc );
1978 op->o_callback = cb;
1979 ldap_pvt_thread_mutex_destroy( &so.s_mutex );
1981 if ( rs->sr_err != LDAP_SUCCESS ) {
1982 send_ldap_result( op, rs );
1985 sop = ch_malloc( sizeof( syncops ));
1987 ldap_pvt_thread_mutex_init( &sop->s_mutex );
1988 sop->s_rid = srs->sr_state.rid;
1991 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1992 sop->s_next = si->si_ops;
1994 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1997 /* snapshot the ctxcsn */
1998 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
1999 strcpy( csnbuf, si->si_ctxcsnbuf );
2000 ctxcsn.bv_len = si->si_ctxcsn.bv_len;
2001 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
2002 ctxcsn.bv_val = csnbuf;
2004 /* If we have a cookie, handle the PRESENT lookups */
2005 if ( !BER_BVISNULL( &srs->sr_state.ctxcsn )) {
2008 /* The cookie was validated when it was parsed, just use it */
2010 /* If just Refreshing and nothing has changed, shortcut it */
2011 if ( bvmatch( &srs->sr_state.ctxcsn, &ctxcsn )) {
2013 if ( !(op->o_sync_mode & SLAP_SYNC_PERSIST) ) {
2014 LDAPControl *ctrls[2];
2018 syncprov_done_ctrl( op, rs, ctrls, 0, 0,
2019 NULL, LDAP_SYNC_REFRESH_DELETES );
2020 rs->sr_ctrls = ctrls;
2021 rs->sr_err = LDAP_SUCCESS;
2022 send_ldap_result( op, rs );
2023 rs->sr_ctrls = NULL;
2028 /* Do we have a sessionlog for this search? */
2031 ldap_pvt_thread_mutex_lock( &sl->sl_mutex );
2032 /* Are there any log entries, and is the consumer state
2033 * present in the session log?
2035 if ( sl->sl_num > 0 && ber_bvcmp( &srs->sr_state.ctxcsn, &sl->sl_mincsn ) >= 0 ) {
2037 /* mutex is unlocked in playlog */
2038 syncprov_playlog( op, rs, sl, srs, &ctxcsn );
2040 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
2043 /* Is the CSN still present in the database? */
2044 if ( syncprov_findcsn( op, FIND_CSN ) != LDAP_SUCCESS ) {
2045 /* No, so a reload is required */
2046 /* the 2.2 consumer doesn't send this hint */
2047 if ( si->si_usehint && srs->sr_rhint == 0 ) {
2048 send_ldap_error( op, rs, LDAP_SYNC_REFRESH_REQUIRED, "sync cookie is stale" );
2053 /* If changed and doing Present lookup, send Present UUIDs */
2054 if ( do_present && syncprov_findcsn( op, FIND_PRESENT ) !=
2056 send_ldap_result( op, rs );
2063 /* Append CSN range to search filter, save original filter
2064 * for persistent search evaluation
2067 sop->s_filterstr= op->ors_filterstr;
2070 /* If something changed, find the changes */
2071 if ( gotstate && !nochange ) {
2072 Filter *fand, *fava;
2074 fand = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
2075 fand->f_choice = LDAP_FILTER_AND;
2076 fand->f_next = NULL;
2077 fava = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
2079 fava->f_choice = LDAP_FILTER_GE;
2080 fava->f_ava = op->o_tmpalloc( sizeof(AttributeAssertion), op->o_tmpmemctx );
2081 fava->f_ava->aa_desc = slap_schema.si_ad_entryCSN;
2082 #ifdef LDAP_COMP_MATCH
2083 fava->f_ava->aa_cf = NULL;
2085 ber_dupbv_x( &fava->f_ava->aa_value, &srs->sr_state.ctxcsn, op->o_tmpmemctx );
2086 fava->f_next = op->ors_filter;
2087 op->ors_filter = fand;
2088 filter2bv_x( op, op->ors_filter, &op->ors_filterstr );
2090 sop->s_flags |= PS_FIX_FILTER;
2093 /* Let our callback add needed info to returned entries */
2094 cb = op->o_tmpcalloc(1, sizeof(slap_callback)+sizeof(searchstate), op->o_tmpmemctx);
2095 ss = (searchstate *)(cb+1);
2098 ss->ss_present = do_present;
2099 ss->ss_ctxcsn.bv_len = ctxcsn.bv_len;
2100 ss->ss_ctxcsn.bv_val = ss->ss_csnbuf;
2101 strcpy( ss->ss_ctxcsn.bv_val, ctxcsn.bv_val );
2102 cb->sc_response = syncprov_search_response;
2103 cb->sc_cleanup = syncprov_search_cleanup;
2104 cb->sc_private = ss;
2105 cb->sc_next = op->o_callback;
2106 op->o_callback = cb;
2108 #if 0 /* I don't think we need to shortcircuit back-bdb any more */
2109 op->o_sync_mode &= SLAP_CONTROL_MASK;
2112 /* If this is a persistent search and no changes were reported during
2113 * the refresh phase, just invoke the response callback to transition
2114 * us into persist phase
2117 rs->sr_err = LDAP_SUCCESS;
2118 rs->sr_nentries = 0;
2119 send_ldap_result( op, rs );
2122 return SLAP_CB_CONTINUE;
2126 syncprov_operational(
2130 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
2131 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2133 if ( rs->sr_entry &&
2134 dn_match( &rs->sr_entry->e_nname, op->o_bd->be_nsuffix )) {
2136 if ( SLAP_OPATTRS( rs->sr_attr_flags ) ||
2137 ad_inlist( slap_schema.si_ad_contextCSN, rs->sr_attrs )) {
2138 Attribute *a, **ap = NULL;
2140 for ( a=rs->sr_entry->e_attrs; a; a=a->a_next ) {
2141 if ( a->a_desc == slap_schema.si_ad_contextCSN )
2146 for ( ap = &rs->sr_operational_attrs; *ap; ap=&(*ap)->a_next );
2148 a = ch_malloc( sizeof(Attribute));
2149 a->a_desc = slap_schema.si_ad_contextCSN;
2150 a->a_vals = ch_malloc( 2 * sizeof(struct berval));
2151 a->a_vals[1].bv_val = NULL;
2152 a->a_nvals = a->a_vals;
2158 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
2160 strcpy( a->a_vals[0].bv_val, si->si_ctxcsnbuf );
2162 ber_dupbv( &a->a_vals[0], &si->si_ctxcsn );
2164 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
2167 return SLAP_CB_CONTINUE;
2177 static ConfigDriver sp_cf_gen;
2179 static ConfigTable spcfg[] = {
2180 { "syncprov-checkpoint", "ops> <minutes", 3, 3, 0, ARG_MAGIC|SP_CHKPT,
2181 sp_cf_gen, "( OLcfgOvAt:1.1 NAME 'olcSpCheckpoint' "
2182 "DESC 'ContextCSN checkpoint interval in ops and minutes' "
2183 "SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
2184 { "syncprov-sessionlog", "ops", 2, 2, 0, ARG_INT|ARG_MAGIC|SP_SESSL,
2185 sp_cf_gen, "( OLcfgOvAt:1.2 NAME 'olcSpSessionlog' "
2186 "DESC 'Session log size in ops' "
2187 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
2188 { "syncprov-nopresent", NULL, 2, 2, 0, ARG_ON_OFF|ARG_MAGIC|SP_NOPRES,
2189 sp_cf_gen, "( OLcfgOvAt:1.3 NAME 'olcSpNoPresent' "
2190 "DESC 'Omit Present phase processing' "
2191 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
2192 { "syncprov-reloadhint", NULL, 2, 2, 0, ARG_ON_OFF|ARG_MAGIC|SP_USEHINT,
2193 sp_cf_gen, "( OLcfgOvAt:1.4 NAME 'olcSpReloadHint' "
2194 "DESC 'Observe Reload Hint in Request control' "
2195 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
2196 { NULL, NULL, 0, 0, 0, ARG_IGNORED }
2199 static ConfigOCs spocs[] = {
2200 { "( OLcfgOvOc:1.1 "
2201 "NAME 'olcSyncProvConfig' "
2202 "DESC 'SyncRepl Provider configuration' "
2203 "SUP olcOverlayConfig "
2204 "MAY ( olcSpCheckpoint $ olcSpSessionlog $ olcSpNoPresent ) )",
2205 Cft_Overlay, spcfg },
2210 sp_cf_gen(ConfigArgs *c)
2212 slap_overinst *on = (slap_overinst *)c->bi;
2213 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2216 if ( c->op == SLAP_CONFIG_EMIT ) {
2217 switch ( c->type ) {
2219 if ( si->si_chkops || si->si_chktime ) {
2221 bv.bv_len = sprintf( c->msg, "%d %d",
2222 si->si_chkops, si->si_chktime );
2224 value_add_one( &c->rvalue_vals, &bv );
2230 if ( si->si_logs ) {
2231 c->value_int = si->si_logs->sl_size;
2237 if ( si->si_nopres ) {
2244 if ( si->si_usehint ) {
2252 } else if ( c->op == LDAP_MOD_DELETE ) {
2253 switch ( c->type ) {
2260 si->si_logs->sl_size = 0;
2262 rc = LDAP_NO_SUCH_ATTRIBUTE;
2265 if ( si->si_nopres )
2268 rc = LDAP_NO_SUCH_ATTRIBUTE;
2271 if ( si->si_usehint )
2274 rc = LDAP_NO_SUCH_ATTRIBUTE;
2279 switch ( c->type ) {
2281 if ( lutil_atoi( &si->si_chkops, c->argv[1] ) != 0 ) {
2282 snprintf( c->msg, sizeof( c->msg ), "%s unable to parse checkpoint ops # \"%s\"",
2283 c->argv[0], c->argv[1] );
2284 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2285 "%s: %s\n", c->log, c->msg, 0 );
2286 return ARG_BAD_CONF;
2288 if ( si->si_chkops <= 0 ) {
2289 snprintf( c->msg, sizeof( c->msg ), "%s invalid checkpoint ops # \"%d\"",
2290 c->argv[0], si->si_chkops );
2291 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2292 "%s: %s\n", c->log, c->msg, 0 );
2293 return ARG_BAD_CONF;
2295 if ( lutil_atoi( &si->si_chktime, c->argv[2] ) != 0 ) {
2296 snprintf( c->msg, sizeof( c->msg ), "%s unable to parse checkpoint time \"%s\"",
2297 c->argv[0], c->argv[1] );
2298 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2299 "%s: %s\n", c->log, c->msg, 0 );
2300 return ARG_BAD_CONF;
2302 if ( si->si_chktime <= 0 ) {
2303 snprintf( c->msg, sizeof( c->msg ), "%s invalid checkpoint time \"%d\"",
2304 c->argv[0], si->si_chkops );
2305 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2306 "%s: %s\n", c->log, c->msg, 0 );
2307 return ARG_BAD_CONF;
2309 si->si_chktime *= 60;
2313 int size = c->value_int;
2316 snprintf( c->msg, sizeof( c->msg ), "%s size %d is negative",
2318 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2319 "%s: %s\n", c->log, c->msg, 0 );
2320 return ARG_BAD_CONF;
2324 sl = ch_malloc( sizeof( sessionlog ) + LDAP_LUTIL_CSNSTR_BUFSIZE );
2325 sl->sl_mincsn.bv_val = (char *)(sl+1);
2326 sl->sl_mincsn.bv_len = 0;
2328 sl->sl_head = sl->sl_tail = NULL;
2329 ldap_pvt_thread_mutex_init( &sl->sl_mutex );
2336 si->si_nopres = c->value_int;
2339 si->si_usehint = c->value_int;
2345 /* ITS#3456 we cannot run this search on the main thread, must use a
2346 * child thread in order to insure we have a big enough stack.
2353 syncprov_findcsn( ptr, FIND_MAXCSN );
2357 /* Read any existing contextCSN from the underlying db.
2358 * Then search for any entries newer than that. If no value exists,
2359 * just generate it. Cache whatever result.
2366 slap_overinst *on = (slap_overinst *) be->bd_info;
2367 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2369 Connection conn = { 0 };
2370 OperationBuffer opbuf = { 0 };
2371 char ctxcsnbuf[LDAP_LUTIL_CSNSTR_BUFSIZE];
2372 Operation *op = (Operation *) &opbuf;
2376 void *thrctx = NULL;
2378 if ( !SLAP_LASTMOD( be )) {
2379 Debug( LDAP_DEBUG_ANY,
2380 "syncprov_db_open: invalid config, lastmod must be enabled\n", 0, 0, 0 );
2384 if ( slapMode & SLAP_TOOL_MODE ) {
2388 rc = overlay_register_control( be, LDAP_CONTROL_SYNC );
2393 thrctx = ldap_pvt_thread_pool_context();
2394 connection_fake_init( &conn, op, thrctx );
2396 op->o_dn = be->be_rootdn;
2397 op->o_ndn = be->be_rootndn;
2399 ctxcsnbuf[0] = '\0';
2401 rc = overlay_entry_get_ov( op, be->be_nsuffix, NULL,
2402 slap_schema.si_ad_contextCSN, 0, &e, on );
2405 ldap_pvt_thread_t tid;
2407 a = attr_find( e->e_attrs, slap_schema.si_ad_contextCSN );
2409 si->si_ctxcsn.bv_len = a->a_nvals[0].bv_len;
2410 if ( si->si_ctxcsn.bv_len >= sizeof(si->si_ctxcsnbuf ))
2411 si->si_ctxcsn.bv_len = sizeof(si->si_ctxcsnbuf)-1;
2412 strncpy( si->si_ctxcsnbuf, a->a_nvals[0].bv_val,
2413 si->si_ctxcsn.bv_len );
2414 si->si_ctxcsnbuf[si->si_ctxcsn.bv_len] = '\0';
2415 strcpy( ctxcsnbuf, si->si_ctxcsnbuf );
2417 overlay_entry_release_ov( op, e, 0, on );
2418 if ( !BER_BVISEMPTY( &si->si_ctxcsn ) ) {
2419 op->o_req_dn = be->be_suffix[0];
2420 op->o_req_ndn = be->be_nsuffix[0];
2421 op->ors_scope = LDAP_SCOPE_SUBTREE;
2422 ldap_pvt_thread_create( &tid, 0, syncprov_db_otask, op );
2423 ldap_pvt_thread_join( tid, NULL );
2427 if ( BER_BVISEMPTY( &si->si_ctxcsn ) ) {
2428 if ( SLAP_SYNC_SHADOW( op->o_bd )) {
2429 /* If we're also a consumer, and we didn't get a contextCSN,
2430 * then don't generate anything, wait for our provider to send it
2435 si->si_ctxcsn.bv_len = sizeof( si->si_ctxcsnbuf );
2436 slap_get_csn( op, &si->si_ctxcsn, 0 );
2439 /* If our ctxcsn is different from what was read from the root
2440 * entry, make sure we do a checkpoint on close
2442 if ( strcmp( si->si_ctxcsnbuf, ctxcsnbuf )) {
2447 op->o_bd->bd_info = (BackendInfo *)on;
2451 /* Write the current contextCSN into the underlying db.
2458 slap_overinst *on = (slap_overinst *) be->bd_info;
2459 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2461 if ( slapMode & SLAP_TOOL_MODE ) {
2464 if ( si->si_numops ) {
2465 Connection conn = {0};
2466 OperationBuffer opbuf;
2467 Operation *op = (Operation *) &opbuf;
2468 SlapReply rs = {REP_RESULT};
2471 thrctx = ldap_pvt_thread_pool_context();
2472 connection_fake_init( &conn, op, thrctx );
2474 op->o_dn = be->be_rootdn;
2475 op->o_ndn = be->be_rootndn;
2476 syncprov_checkpoint( op, &rs, on );
2487 slap_overinst *on = (slap_overinst *)be->bd_info;
2488 syncprov_info_t *si;
2490 if ( SLAP_ISGLOBALOVERLAY( be ) ) {
2491 Debug( LDAP_DEBUG_ANY,
2492 "syncprov must be instantiated within a database.\n",
2497 si = ch_calloc(1, sizeof(syncprov_info_t));
2498 on->on_bi.bi_private = si;
2499 ldap_pvt_thread_rdwr_init( &si->si_csn_rwlock );
2500 ldap_pvt_thread_mutex_init( &si->si_ops_mutex );
2501 ldap_pvt_thread_mutex_init( &si->si_mods_mutex );
2502 si->si_ctxcsn.bv_val = si->si_ctxcsnbuf;
2504 csn_anlist[0].an_desc = slap_schema.si_ad_entryCSN;
2505 csn_anlist[0].an_name = slap_schema.si_ad_entryCSN->ad_cname;
2506 csn_anlist[1].an_desc = slap_schema.si_ad_entryUUID;
2507 csn_anlist[1].an_name = slap_schema.si_ad_entryUUID->ad_cname;
2509 uuid_anlist[0].an_desc = slap_schema.si_ad_entryUUID;
2510 uuid_anlist[0].an_name = slap_schema.si_ad_entryUUID->ad_cname;
2516 syncprov_db_destroy(
2520 slap_overinst *on = (slap_overinst *)be->bd_info;
2521 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2524 if ( si->si_logs ) {
2525 slog_entry *se = si->si_logs->sl_head;
2528 slog_entry *se_next = se->se_next;
2533 ch_free( si->si_logs );
2535 ldap_pvt_thread_mutex_destroy( &si->si_mods_mutex );
2536 ldap_pvt_thread_mutex_destroy( &si->si_ops_mutex );
2537 ldap_pvt_thread_rdwr_destroy( &si->si_csn_rwlock );
2544 static int syncprov_parseCtrl (
2550 BerElementBuffer berbuf;
2551 BerElement *ber = (BerElement *)&berbuf;
2554 struct berval cookie = BER_BVNULL;
2558 if ( op->o_sync != SLAP_CONTROL_NONE ) {
2559 rs->sr_text = "Sync control specified multiple times";
2560 return LDAP_PROTOCOL_ERROR;
2563 if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
2564 rs->sr_text = "Sync control specified with pagedResults control";
2565 return LDAP_PROTOCOL_ERROR;
2568 if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
2569 rs->sr_text = "Sync control value is empty (or absent)";
2570 return LDAP_PROTOCOL_ERROR;
2573 /* Parse the control value
2574 * syncRequestValue ::= SEQUENCE {
2579 * refreshAndPersist (3)
2581 * cookie syncCookie OPTIONAL
2585 ber_init2( ber, &ctrl->ldctl_value, 0 );
2587 if ( (tag = ber_scanf( ber, "{i" /*}*/, &mode )) == LBER_ERROR ) {
2588 rs->sr_text = "Sync control : mode decoding error";
2589 return LDAP_PROTOCOL_ERROR;
2593 case LDAP_SYNC_REFRESH_ONLY:
2594 mode = SLAP_SYNC_REFRESH;
2596 case LDAP_SYNC_REFRESH_AND_PERSIST:
2597 mode = SLAP_SYNC_REFRESH_AND_PERSIST;
2600 rs->sr_text = "Sync control : unknown update mode";
2601 return LDAP_PROTOCOL_ERROR;
2604 tag = ber_peek_tag( ber, &len );
2606 if ( tag == LDAP_TAG_SYNC_COOKIE ) {
2607 if (( ber_scanf( ber, /*{*/ "m", &cookie )) == LBER_ERROR ) {
2608 rs->sr_text = "Sync control : cookie decoding error";
2609 return LDAP_PROTOCOL_ERROR;
2611 tag = ber_peek_tag( ber, &len );
2613 if ( tag == LDAP_TAG_RELOAD_HINT ) {
2614 if (( ber_scanf( ber, /*{*/ "b", &rhint )) == LBER_ERROR ) {
2615 rs->sr_text = "Sync control : rhint decoding error";
2616 return LDAP_PROTOCOL_ERROR;
2619 if (( ber_scanf( ber, /*{*/ "}")) == LBER_ERROR ) {
2620 rs->sr_text = "Sync control : decoding error";
2621 return LDAP_PROTOCOL_ERROR;
2623 sr = op->o_tmpcalloc( 1, sizeof(struct sync_control), op->o_tmpmemctx );
2624 sr->sr_rhint = rhint;
2625 if (!BER_BVISNULL(&cookie)) {
2626 ber_dupbv_x( &sr->sr_state.octet_str, &cookie, op->o_tmpmemctx );
2627 if ( slap_parse_sync_cookie( &sr->sr_state, op->o_tmpmemctx ) ||
2628 sr->sr_state.rid == -1 ) {
2629 rs->sr_text = "Sync control : cookie parsing error";
2630 return LDAP_PROTOCOL_ERROR;
2634 op->o_controls[slap_cids.sc_LDAPsync] = sr;
2636 op->o_sync = ctrl->ldctl_iscritical
2637 ? SLAP_CONTROL_CRITICAL
2638 : SLAP_CONTROL_NONCRITICAL;
2640 op->o_sync_mode |= mode; /* o_sync_mode shares o_sync */
2642 return LDAP_SUCCESS;
2645 /* This overlay is set up for dynamic loading via moduleload. For static
2646 * configuration, you'll need to arrange for the slap_overinst to be
2647 * initialized and registered by some other function inside slapd.
2650 static slap_overinst syncprov;
2653 syncprov_initialize()
2657 rc = register_supported_control( LDAP_CONTROL_SYNC,
2658 SLAP_CTRL_SEARCH, NULL,
2659 syncprov_parseCtrl, &slap_cids.sc_LDAPsync );
2660 if ( rc != LDAP_SUCCESS ) {
2661 Debug( LDAP_DEBUG_ANY,
2662 "syncprov_init: Failed to register control %d\n", rc, 0, 0 );
2666 syncprov.on_bi.bi_type = "syncprov";
2667 syncprov.on_bi.bi_db_init = syncprov_db_init;
2668 syncprov.on_bi.bi_db_destroy = syncprov_db_destroy;
2669 syncprov.on_bi.bi_db_open = syncprov_db_open;
2670 syncprov.on_bi.bi_db_close = syncprov_db_close;
2672 syncprov.on_bi.bi_op_abandon = syncprov_op_abandon;
2673 syncprov.on_bi.bi_op_cancel = syncprov_op_abandon;
2675 syncprov.on_bi.bi_op_add = syncprov_op_mod;
2676 syncprov.on_bi.bi_op_compare = syncprov_op_compare;
2677 syncprov.on_bi.bi_op_delete = syncprov_op_mod;
2678 syncprov.on_bi.bi_op_modify = syncprov_op_mod;
2679 syncprov.on_bi.bi_op_modrdn = syncprov_op_mod;
2680 syncprov.on_bi.bi_op_search = syncprov_op_search;
2681 syncprov.on_bi.bi_extended = syncprov_op_extended;
2682 syncprov.on_bi.bi_operational = syncprov_operational;
2684 syncprov.on_bi.bi_cf_ocs = spocs;
2686 generic_filter.f_desc = slap_schema.si_ad_objectClass;
2688 rc = config_register_schema( spcfg, spocs );
2689 if ( rc ) return rc;
2691 return overlay_register( &syncprov );
2694 #if SLAPD_OVER_SYNCPROV == SLAPD_MOD_DYNAMIC
2696 init_module( int argc, char *argv[] )
2698 return syncprov_initialize();
2700 #endif /* SLAPD_OVER_SYNCPROV == SLAPD_MOD_DYNAMIC */
2702 #endif /* defined(SLAPD_OVER_SYNCPROV) */