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 */
63 struct berval s_filterstr;
64 int s_flags; /* search status */
65 #define PS_IS_REFRESHING 0x01
66 #define PS_IS_DETACHED 0x02
67 #define PS_WROTE_BASE 0x04
68 #define PS_FIND_BASE 0x08
69 #define PS_FIX_FILTER 0x10
71 int s_inuse; /* reference count */
72 struct syncres *s_res;
73 struct syncres *s_restail;
74 struct re_s *s_qtask; /* task for playing psearch responses */
75 #define RUNQ_INTERVAL 36000 /* a long time */
76 ldap_pvt_thread_mutex_t s_mutex;
79 /* A received sync control */
80 typedef struct sync_control {
81 struct sync_cookie sr_state;
85 #if 0 /* moved back to slap.h */
86 #define o_sync o_ctrlflag[slap_cids.sc_LDAPsync]
88 /* o_sync_mode uses data bits of o_sync */
89 #define o_sync_mode o_ctrlflag[slap_cids.sc_LDAPsync]
91 #define SLAP_SYNC_NONE (LDAP_SYNC_NONE<<SLAP_CONTROL_SHIFT)
92 #define SLAP_SYNC_REFRESH (LDAP_SYNC_REFRESH_ONLY<<SLAP_CONTROL_SHIFT)
93 #define SLAP_SYNC_PERSIST (LDAP_SYNC_RESERVED<<SLAP_CONTROL_SHIFT)
94 #define SLAP_SYNC_REFRESH_AND_PERSIST (LDAP_SYNC_REFRESH_AND_PERSIST<<SLAP_CONTROL_SHIFT)
96 /* Record of which searches matched at premodify step */
97 typedef struct syncmatches {
98 struct syncmatches *sm_next;
102 /* Session log data */
103 typedef struct slog_entry {
104 struct slog_entry *se_next;
105 struct berval se_uuid;
106 struct berval se_csn;
111 typedef struct sessionlog {
112 struct berval sl_mincsn;
117 ldap_pvt_thread_mutex_t sl_mutex;
120 /* The main state for this overlay */
121 typedef struct syncprov_info_t {
123 BerVarray si_ctxcsn; /* ldapsync context */
126 int si_chkops; /* checkpointing info */
128 int si_numops; /* number of ops since last checkpoint */
129 int si_nopres; /* Skip present phase */
130 int si_usehint; /* use reload hint */
131 time_t si_chklast; /* time of last checkpoint */
132 Avlnode *si_mods; /* entries being modified */
134 ldap_pvt_thread_rdwr_t si_csn_rwlock;
135 ldap_pvt_thread_mutex_t si_ops_mutex;
136 ldap_pvt_thread_mutex_t si_mods_mutex;
139 typedef struct opcookie {
141 syncmatches *smatches;
142 struct berval sdn; /* DN of entry, for deletes */
144 struct berval suuid; /* UUID of entry */
145 struct berval sctxcsn;
146 int sreference; /* Is the entry a reference? */
149 typedef struct fbase_cookie {
150 struct berval *fdn; /* DN of a modified entry, for scope testing */
151 syncops *fss; /* persistent search we're testing against */
152 int fbase; /* if TRUE we found the search base and it's still valid */
153 int fscope; /* if TRUE then fdn is within the psearch scope */
156 static AttributeName csn_anlist[3];
157 static AttributeName uuid_anlist[2];
159 /* Build a LDAPsync intermediate state control */
165 int entry_sync_state,
169 struct berval *cookie )
174 BerElementBuffer berbuf;
175 BerElement *ber = (BerElement *)&berbuf;
177 struct berval entryuuid_bv = BER_BVNULL;
179 ber_init2( ber, 0, LBER_USE_DER );
180 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
182 ctrls[num_ctrls] = op->o_tmpalloc( sizeof ( LDAPControl ), op->o_tmpmemctx );
184 for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
185 AttributeDescription *desc = a->a_desc;
186 if ( desc == slap_schema.si_ad_entryUUID ) {
187 entryuuid_bv = a->a_nvals[0];
192 /* FIXME: what if entryuuid is NULL or empty ? */
194 if ( send_cookie && cookie ) {
195 ber_printf( ber, "{eOON}",
196 entry_sync_state, &entryuuid_bv, cookie );
198 ber_printf( ber, "{eON}",
199 entry_sync_state, &entryuuid_bv );
202 ctrls[num_ctrls]->ldctl_oid = LDAP_CONTROL_SYNC_STATE;
203 ctrls[num_ctrls]->ldctl_iscritical = (op->o_sync == SLAP_CONTROL_CRITICAL);
204 ret = ber_flatten2( ber, &ctrls[num_ctrls]->ldctl_value, 1 );
209 Debug( LDAP_DEBUG_TRACE,
210 "slap_build_sync_ctrl: ber_flatten2 failed\n",
212 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
219 /* Build a LDAPsync final state control */
227 struct berval *cookie,
231 BerElementBuffer berbuf;
232 BerElement *ber = (BerElement *)&berbuf;
234 ber_init2( ber, NULL, LBER_USE_DER );
235 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
237 ctrls[num_ctrls] = op->o_tmpalloc( sizeof ( LDAPControl ), op->o_tmpmemctx );
239 ber_printf( ber, "{" );
240 if ( send_cookie && cookie ) {
241 ber_printf( ber, "O", cookie );
243 if ( refreshDeletes == LDAP_SYNC_REFRESH_DELETES ) {
244 ber_printf( ber, "b", refreshDeletes );
246 ber_printf( ber, "N}" );
248 ctrls[num_ctrls]->ldctl_oid = LDAP_CONTROL_SYNC_DONE;
249 ctrls[num_ctrls]->ldctl_iscritical = (op->o_sync == SLAP_CONTROL_CRITICAL);
250 ret = ber_flatten2( ber, &ctrls[num_ctrls]->ldctl_value, 1 );
255 Debug( LDAP_DEBUG_TRACE,
256 "syncprov_done_ctrl: ber_flatten2 failed\n",
258 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
270 struct berval *cookie,
275 BerElementBuffer berbuf;
276 BerElement *ber = (BerElement *)&berbuf;
277 struct berval rspdata;
281 ber_init2( ber, NULL, LBER_USE_DER );
282 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
286 case LDAP_TAG_SYNC_NEW_COOKIE:
287 ber_printf( ber, "tO", type, cookie );
289 case LDAP_TAG_SYNC_REFRESH_DELETE:
290 case LDAP_TAG_SYNC_REFRESH_PRESENT:
291 ber_printf( ber, "t{", type );
293 ber_printf( ber, "O", cookie );
295 if ( refreshDone == 0 ) {
296 ber_printf( ber, "b", refreshDone );
298 ber_printf( ber, "N}" );
300 case LDAP_TAG_SYNC_ID_SET:
301 ber_printf( ber, "t{", type );
303 ber_printf( ber, "O", cookie );
305 if ( refreshDeletes == 1 ) {
306 ber_printf( ber, "b", refreshDeletes );
308 ber_printf( ber, "[W]", syncUUIDs );
309 ber_printf( ber, "N}" );
312 Debug( LDAP_DEBUG_TRACE,
313 "syncprov_sendinfo: invalid syncinfo type (%d)\n",
319 ret = ber_flatten2( ber, &rspdata, 0 );
322 Debug( LDAP_DEBUG_TRACE,
323 "syncprov_sendinfo: ber_flatten2 failed\n",
325 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
329 rs->sr_rspoid = LDAP_SYNC_INFO;
330 rs->sr_rspdata = &rspdata;
331 send_ldap_intermediate( op, rs );
332 rs->sr_rspdata = NULL;
338 /* Find a modtarget in an AVL tree */
340 sp_avl_cmp( const void *c1, const void *c2 )
342 const modtarget *m1, *m2;
346 rc = m1->mt_op->o_req_ndn.bv_len - m2->mt_op->o_req_ndn.bv_len;
349 return ber_bvcmp( &m1->mt_op->o_req_ndn, &m2->mt_op->o_req_ndn );
352 /* syncprov_findbase:
353 * finds the true DN of the base of a search (with alias dereferencing) and
354 * checks to make sure the base entry doesn't get replaced with a different
355 * entry (e.g., swapping trees via ModDN, or retargeting an alias). If a
356 * change is detected, any persistent search on this base must be terminated /
358 * On the first call, we just save the DN and entryID. On subsequent calls
359 * we compare the DN and entryID with the saved values.
362 findbase_cb( Operation *op, SlapReply *rs )
364 slap_callback *sc = op->o_callback;
366 if ( rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS ) {
367 fbase_cookie *fc = sc->sc_private;
369 /* If no entryID, we're looking for the first time.
370 * Just store whatever we got.
372 if ( fc->fss->s_eid == NOID ) {
374 fc->fss->s_eid = rs->sr_entry->e_id;
375 ber_dupbv( &fc->fss->s_base, &rs->sr_entry->e_nname );
377 } else if ( rs->sr_entry->e_id == fc->fss->s_eid &&
378 dn_match( &rs->sr_entry->e_nname, &fc->fss->s_base )) {
380 /* OK, the DN is the same and the entryID is the same. */
384 if ( rs->sr_err != LDAP_SUCCESS ) {
385 Debug( LDAP_DEBUG_ANY, "findbase failed! %d\n", rs->sr_err,0,0 );
390 static Filter generic_filter = { LDAP_FILTER_PRESENT, { 0 }, NULL };
391 static struct berval generic_filterstr = BER_BVC("(objectclass=*)");
394 syncprov_findbase( Operation *op, fbase_cookie *fc )
396 opcookie *opc = op->o_callback->sc_private;
397 slap_overinst *on = opc->son;
399 /* Use basic parameters from syncrepl search, but use
400 * current op's threadctx / tmpmemctx
402 ldap_pvt_thread_mutex_lock( &fc->fss->s_mutex );
403 if ( fc->fss->s_flags & PS_FIND_BASE ) {
404 slap_callback cb = {0};
406 SlapReply frs = { REP_RESULT };
410 fc->fss->s_flags ^= PS_FIND_BASE;
411 ldap_pvt_thread_mutex_unlock( &fc->fss->s_mutex );
413 fop = *fc->fss->s_op;
415 fop.o_hdr = op->o_hdr;
417 fop.o_time = op->o_time;
418 fop.o_tincr = op->o_tincr;
419 bi = op->o_bd->bd_info;
421 cb.sc_response = findbase_cb;
424 fop.o_sync_mode = 0; /* turn off sync mode */
425 fop.o_managedsait = SLAP_CONTROL_CRITICAL;
426 fop.o_callback = &cb;
427 fop.o_tag = LDAP_REQ_SEARCH;
428 fop.ors_scope = LDAP_SCOPE_BASE;
429 fop.ors_limit = NULL;
431 fop.ors_tlimit = SLAP_NO_LIMIT;
432 fop.ors_attrs = slap_anlist_no_attrs;
433 fop.ors_attrsonly = 1;
434 fop.ors_filter = &generic_filter;
435 fop.ors_filterstr = generic_filterstr;
437 rc = overlay_op_walk( &fop, &frs, op_search, on->on_info, on );
438 op->o_bd->bd_info = bi;
440 ldap_pvt_thread_mutex_unlock( &fc->fss->s_mutex );
444 /* After the first call, see if the fdn resides in the scope */
445 if ( fc->fbase == 1 ) {
446 switch ( fc->fss->s_op->ors_scope ) {
447 case LDAP_SCOPE_BASE:
448 fc->fscope = dn_match( fc->fdn, &fc->fss->s_base );
450 case LDAP_SCOPE_ONELEVEL: {
452 dnParent( fc->fdn, &pdn );
453 fc->fscope = dn_match( &pdn, &fc->fss->s_base );
455 case LDAP_SCOPE_SUBTREE:
456 fc->fscope = dnIsSuffix( fc->fdn, &fc->fss->s_base );
458 case LDAP_SCOPE_SUBORDINATE:
459 fc->fscope = dnIsSuffix( fc->fdn, &fc->fss->s_base ) &&
460 !dn_match( fc->fdn, &fc->fss->s_base );
468 /* If entryID has changed, then the base of this search has
469 * changed. Invalidate the psearch.
471 return LDAP_NO_SUCH_OBJECT;
475 * This function has three different purposes, but they all use a search
476 * that filters on entryCSN so they're combined here.
477 * 1: at startup time, after a contextCSN has been read from the database,
478 * we search for all entries with CSN >= contextCSN in case the contextCSN
479 * was not checkpointed at the previous shutdown.
481 * 2: when the current contextCSN is known and we have a sync cookie, we search
482 * for one entry with CSN = the cookie CSN. If not found, try <= cookie CSN.
483 * If an entry is found, the cookie CSN is valid, otherwise it is stale.
485 * 3: during a refresh phase, we search for all entries with CSN <= the cookie
486 * CSN, and generate Present records for them. We always collect this result
487 * in SyncID sets, even if there's only one match.
489 typedef enum find_csn_t {
496 findmax_cb( Operation *op, SlapReply *rs )
498 if ( rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS ) {
499 struct berval *maxcsn = op->o_callback->sc_private;
500 Attribute *a = attr_find( rs->sr_entry->e_attrs,
501 slap_schema.si_ad_entryCSN );
503 if ( a && ber_bvcmp( &a->a_vals[0], maxcsn ) > 0 ) {
504 maxcsn->bv_len = a->a_vals[0].bv_len;
505 strcpy( maxcsn->bv_val, a->a_vals[0].bv_val );
512 findcsn_cb( Operation *op, SlapReply *rs )
514 slap_callback *sc = op->o_callback;
516 /* We just want to know that at least one exists, so it's OK if
517 * we exceed the unchecked limit.
519 if ( rs->sr_err == LDAP_ADMINLIMIT_EXCEEDED ||
520 (rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS )) {
521 sc->sc_private = (void *)1;
526 /* Build a list of entryUUIDs for sending in a SyncID set */
530 typedef struct fpres_cookie {
537 findpres_cb( Operation *op, SlapReply *rs )
539 slap_callback *sc = op->o_callback;
540 fpres_cookie *pc = sc->sc_private;
542 int ret = SLAP_CB_CONTINUE;
544 switch ( rs->sr_type ) {
546 a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_entryUUID );
548 pc->uuids[pc->num].bv_val = pc->last;
549 AC_MEMCPY( pc->uuids[pc->num].bv_val, a->a_nvals[0].bv_val,
550 pc->uuids[pc->num].bv_len );
552 pc->last = pc->uuids[pc->num].bv_val;
553 pc->uuids[pc->num].bv_val = NULL;
556 if ( pc->num != SLAP_SYNCUUID_SET_SIZE )
562 ret = syncprov_sendinfo( op, rs, LDAP_TAG_SYNC_ID_SET, NULL,
564 pc->uuids[pc->num].bv_val = pc->last;
566 pc->last = pc->uuids[0].bv_val;
576 syncprov_findcsn( Operation *op, find_csn_t mode )
578 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
579 syncprov_info_t *si = on->on_bi.bi_private;
581 slap_callback cb = {0};
583 SlapReply frs = { REP_RESULT };
584 char buf[LDAP_LUTIL_CSNSTR_BUFSIZE + STRLENOF("(entryCSN<=)")];
585 char cbuf[LDAP_LUTIL_CSNSTR_BUFSIZE];
586 struct berval maxcsn;
588 #ifdef LDAP_COMP_MATCH
589 AttributeAssertion eq = { NULL, BER_BVNULL, NULL };
591 AttributeAssertion eq = { NULL, BER_BVNULL };
593 fpres_cookie pcookie;
594 sync_control *srs = NULL;
595 struct slap_limits_set fc_limits;
596 int i, rc = LDAP_SUCCESS, findcsn_retry = 1;
599 if ( mode != FIND_MAXCSN ) {
600 srs = op->o_controls[slap_cids.sc_LDAPsync];
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;
610 BER_BVZERO( &cf.f_av_value );
613 fop.o_callback = &cb;
614 fop.ors_limit = NULL;
615 fop.ors_tlimit = SLAP_NO_LIMIT;
616 fop.ors_filter = &cf;
617 fop.ors_filterstr.bv_val = buf;
622 cf.f_choice = LDAP_FILTER_GE;
623 cf.f_av_value = si->si_ctxcsn[0];
624 /* If there are multiple CSNs, use the largest */
625 for ( i=1; i<si->si_numcsns; i++) {
626 if ( ber_bvcmp( &cf.f_av_value, &si->si_ctxcsn[i] ) < 0 ) {
627 cf.f_av_value = si->si_ctxcsn[i];
631 fop.ors_filterstr.bv_len = sprintf( buf, "(entryCSN>=%s)",
632 cf.f_av_value.bv_val );
633 fop.ors_attrsonly = 0;
634 fop.ors_attrs = csn_anlist;
635 fop.ors_slimit = SLAP_NO_LIMIT;
636 cb.sc_private = &maxcsn;
637 cb.sc_response = findmax_cb;
638 strcpy( cbuf, cf.f_av_value.bv_val );
639 maxcsn.bv_val = cbuf;
640 maxcsn.bv_len = cf.f_av_value.bv_len;
643 if ( BER_BVISEMPTY( &cf.f_av_value )) {
644 cf.f_av_value = srs->sr_state.ctxcsn[0];
645 /* If there are multiple CSNs, use the smallest */
646 for ( i=1; i<srs->sr_state.numcsns; i++ ) {
647 if ( ber_bvcmp( &cf.f_av_value, &srs->sr_state.ctxcsn[i] )
649 cf.f_av_value = srs->sr_state.ctxcsn[i];
653 /* Look for exact match the first time */
654 if ( findcsn_retry ) {
655 cf.f_choice = LDAP_FILTER_EQUALITY;
656 fop.ors_filterstr.bv_len = sprintf( buf, "(entryCSN=%s)",
657 cf.f_av_value.bv_val );
658 /* On retry, look for <= */
660 cf.f_choice = LDAP_FILTER_LE;
661 fop.ors_limit = &fc_limits;
662 fc_limits.lms_s_unchecked = 1;
663 fop.ors_filterstr.bv_len = sprintf( buf, "(entryCSN<=%s)",
664 cf.f_av_value.bv_val );
666 fop.ors_attrsonly = 1;
667 fop.ors_attrs = slap_anlist_no_attrs;
669 cb.sc_private = NULL;
670 cb.sc_response = findcsn_cb;
673 fop.ors_filter = op->ors_filter;
674 fop.ors_filterstr = op->ors_filterstr;
675 fop.ors_attrsonly = 0;
676 fop.ors_attrs = uuid_anlist;
677 fop.ors_slimit = SLAP_NO_LIMIT;
678 cb.sc_private = &pcookie;
679 cb.sc_response = findpres_cb;
682 /* preallocate storage for a full set */
683 pcookie.uuids = op->o_tmpalloc( (SLAP_SYNCUUID_SET_SIZE+1) *
684 sizeof(struct berval) + SLAP_SYNCUUID_SET_SIZE * UUID_LEN,
686 pcookie.last = (char *)(pcookie.uuids + SLAP_SYNCUUID_SET_SIZE+1);
687 pcookie.uuids[0].bv_val = pcookie.last;
688 pcookie.uuids[0].bv_len = UUID_LEN;
689 for (i=1; i<SLAP_SYNCUUID_SET_SIZE; i++) {
690 pcookie.uuids[i].bv_val = pcookie.uuids[i-1].bv_val + UUID_LEN;
691 pcookie.uuids[i].bv_len = UUID_LEN;
696 fop.o_bd->bd_info = on->on_info->oi_orig;
697 fop.o_bd->be_search( &fop, &frs );
698 fop.o_bd->bd_info = (BackendInfo *)on;
702 if ( ber_bvcmp( &si->si_ctxcsn[maxid], &maxcsn )) {
703 ber_bvreplace( &si->si_ctxcsn[maxid], &maxcsn );
704 si->si_numops++; /* ensure a checkpoint */
708 /* If matching CSN was not found, invalidate the context. */
709 if ( !cb.sc_private ) {
710 /* If we didn't find an exact match, then try for <= */
711 if ( findcsn_retry ) {
715 rc = LDAP_NO_SUCH_OBJECT;
719 op->o_tmpfree( pcookie.uuids, op->o_tmpmemctx );
727 syncprov_free_syncop( syncops *so )
729 syncres *sr, *srnext;
730 GroupAssertion *ga, *gnext;
732 ldap_pvt_thread_mutex_lock( &so->s_mutex );
733 if ( --so->s_inuse > 0 ) {
734 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
737 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
738 if ( so->s_flags & PS_IS_DETACHED ) {
739 filter_free( so->s_op->ors_filter );
740 for ( ga = so->s_op->o_groups; ga; ga=gnext ) {
746 ch_free( so->s_base.bv_val );
747 for ( sr=so->s_res; sr; sr=srnext ) {
751 ldap_pvt_thread_mutex_destroy( &so->s_mutex );
755 /* Send a persistent search response */
757 syncprov_sendresp( Operation *op, opcookie *opc, syncops *so,
758 Entry **e, int mode )
760 slap_overinst *on = opc->son;
762 SlapReply rs = { REP_SEARCH };
763 LDAPControl *ctrls[2];
764 struct berval cookie, csns[2];
766 Attribute a_uuid = {0};
768 if ( so->s_op->o_abandon )
769 return SLAPD_ABANDON;
772 csns[0] = opc->sctxcsn;
773 BER_BVZERO( &csns[1] );
774 slap_compose_sync_cookie( op, &cookie, csns, so->s_rid, so->s_sid );
776 e_uuid.e_attrs = &a_uuid;
777 a_uuid.a_desc = slap_schema.si_ad_entryUUID;
778 a_uuid.a_nvals = &opc->suuid;
779 rs.sr_err = syncprov_state_ctrl( op, &rs, &e_uuid,
780 mode, ctrls, 0, 1, &cookie );
781 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
784 op->o_bd->bd_info = (BackendInfo *)on->on_info;
788 if ( rs.sr_entry->e_private )
789 rs.sr_flags = REP_ENTRY_MUSTRELEASE;
790 if ( opc->sreference ) {
791 rs.sr_ref = get_entry_referrals( op, rs.sr_entry );
792 rs.sr_err = send_search_reference( op, &rs );
793 ber_bvarray_free( rs.sr_ref );
799 case LDAP_SYNC_MODIFY:
801 if ( rs.sr_entry->e_private )
802 rs.sr_flags = REP_ENTRY_MUSTRELEASE;
803 rs.sr_attrs = op->ors_attrs;
804 rs.sr_err = send_search_entry( op, &rs );
808 case LDAP_SYNC_DELETE:
809 e_uuid.e_attrs = NULL;
810 e_uuid.e_name = opc->sdn;
811 e_uuid.e_nname = opc->sndn;
812 rs.sr_entry = &e_uuid;
813 if ( opc->sreference ) {
814 struct berval bv = BER_BVNULL;
816 rs.sr_err = send_search_reference( op, &rs );
818 rs.sr_err = send_search_entry( op, &rs );
824 /* In case someone else freed it already? */
826 op->o_tmpfree( rs.sr_ctrls[0], op->o_tmpmemctx );
833 /* Play back queued responses */
835 syncprov_qplay( Operation *op, slap_overinst *on, syncops *so )
845 ldap_pvt_thread_mutex_lock( &so->s_mutex );
848 so->s_res = sr->s_next;
850 so->s_restail = NULL;
851 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
853 if ( !sr || so->s_op->o_abandon )
857 opc.sndn = sr->s_ndn;
858 opc.suuid = sr->s_uuid;
859 opc.sctxcsn = sr->s_csn;
860 opc.sreference = sr->s_isreference;
863 if ( sr->s_mode != LDAP_SYNC_DELETE ) {
864 rc = overlay_entry_get_ov( op, &opc.sndn, NULL, NULL, 0, &e, on );
866 Debug( LDAP_DEBUG_SYNC, "syncprov_qplay: failed to get %s, "
867 "error (%d), ignoring...\n", opc.sndn.bv_val, rc, 0 );
873 rc = syncprov_sendresp( op, &opc, so, &e, sr->s_mode );
876 overlay_entry_release_ov( op, e, 0, on );
887 /* runqueue task for playing back queued responses */
889 syncprov_qtask( void *ctx, void *arg )
891 struct re_s *rtask = arg;
892 syncops *so = rtask->arg;
893 slap_overinst *on = so->s_op->o_private;
894 OperationBuffer opbuf;
899 op = (Operation *) &opbuf;
901 op->o_hdr = (Opheader *)(op+1);
902 op->o_controls = (void **)(op->o_hdr+1);
903 memset( op->o_controls, 0, SLAP_MAX_CIDS * sizeof(void *));
905 *op->o_hdr = *so->s_op->o_hdr;
907 op->o_tmpmemctx = slap_sl_mem_create(SLAP_SLAB_SIZE, SLAP_SLAB_STACK, ctx, 1);
908 op->o_tmpmfuncs = &slap_sl_mfuncs;
909 op->o_threadctx = ctx;
911 /* syncprov_qplay expects a fake db */
912 be = *so->s_op->o_bd;
913 be.be_flags |= SLAP_DBFLAG_OVERLAY;
915 op->o_private = NULL;
916 op->o_callback = NULL;
918 rc = syncprov_qplay( op, on, so );
920 /* decrement use count... */
921 syncprov_free_syncop( so );
923 /* wait until we get explicitly scheduled again */
924 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
925 ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
927 ldap_pvt_runqueue_resched( &slapd_rq, rtask, 1 );
929 /* bail out on any error */
930 ldap_pvt_runqueue_remove( &slapd_rq, rtask );
932 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
934 #if 0 /* FIXME: connection_close isn't exported from slapd.
938 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
939 if ( connection_state_closing( op->o_conn )) {
940 connection_close( op->o_conn );
942 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
948 /* Start the task to play back queued psearch responses */
950 syncprov_qstart( syncops *so )
953 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
954 if ( !so->s_qtask ) {
955 so->s_qtask = ldap_pvt_runqueue_insert( &slapd_rq, RUNQ_INTERVAL,
956 syncprov_qtask, so, "syncprov_qtask",
957 so->s_op->o_conn->c_peer_name.bv_val );
961 if (!ldap_pvt_runqueue_isrunning( &slapd_rq, so->s_qtask ) &&
962 !so->s_qtask->next_sched.tv_sec ) {
963 so->s_qtask->interval.tv_sec = 0;
964 ldap_pvt_runqueue_resched( &slapd_rq, so->s_qtask, 0 );
965 so->s_qtask->interval.tv_sec = RUNQ_INTERVAL;
970 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
972 slap_wake_listener();
975 /* Queue a persistent search response */
977 syncprov_qresp( opcookie *opc, syncops *so, int mode )
982 /* Don't send changes back to their originator */
983 sid = slap_parse_csn_sid( &opc->sctxcsn );
984 if ( sid >= 0 && sid == so->s_sid )
987 sr = ch_malloc(sizeof(syncres) + opc->suuid.bv_len + 1 +
988 opc->sdn.bv_len + 1 + opc->sndn.bv_len + 1 + opc->sctxcsn.bv_len + 1 );
990 sr->s_dn.bv_val = (char *)(sr + 1);
991 sr->s_dn.bv_len = opc->sdn.bv_len;
993 sr->s_isreference = opc->sreference;
994 sr->s_ndn.bv_val = lutil_strcopy( sr->s_dn.bv_val,
995 opc->sdn.bv_val ) + 1;
996 sr->s_ndn.bv_len = opc->sndn.bv_len;
997 sr->s_uuid.bv_val = lutil_strcopy( sr->s_ndn.bv_val,
998 opc->sndn.bv_val ) + 1;
999 sr->s_uuid.bv_len = opc->suuid.bv_len;
1000 AC_MEMCPY( sr->s_uuid.bv_val, opc->suuid.bv_val, opc->suuid.bv_len );
1001 sr->s_csn.bv_val = sr->s_uuid.bv_val + sr->s_uuid.bv_len + 1;
1002 sr->s_csn.bv_len = opc->sctxcsn.bv_len;
1003 strcpy( sr->s_csn.bv_val, opc->sctxcsn.bv_val );
1005 ldap_pvt_thread_mutex_lock( &so->s_mutex );
1009 so->s_restail->s_next = sr;
1013 /* If the base of the psearch was modified, check it next time round */
1014 if ( so->s_flags & PS_WROTE_BASE ) {
1015 so->s_flags ^= PS_WROTE_BASE;
1016 so->s_flags |= PS_FIND_BASE;
1018 if ( so->s_flags & PS_IS_DETACHED ) {
1019 syncprov_qstart( so );
1021 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
1022 return LDAP_SUCCESS;
1026 syncprov_drop_psearch( syncops *so, int lock )
1028 if ( so->s_flags & PS_IS_DETACHED ) {
1030 ldap_pvt_thread_mutex_lock( &so->s_op->o_conn->c_mutex );
1031 so->s_op->o_conn->c_n_ops_executing--;
1032 so->s_op->o_conn->c_n_ops_completed++;
1033 LDAP_STAILQ_REMOVE( &so->s_op->o_conn->c_ops, so->s_op, Operation,
1036 ldap_pvt_thread_mutex_unlock( &so->s_op->o_conn->c_mutex );
1038 syncprov_free_syncop( so );
1044 syncprov_ab_cleanup( Operation *op, SlapReply *rs )
1046 slap_callback *sc = op->o_callback;
1047 op->o_callback = sc->sc_next;
1048 syncprov_drop_psearch( op->o_callback->sc_private, 0 );
1049 op->o_tmpfree( sc, op->o_tmpmemctx );
1054 syncprov_op_abandon( Operation *op, SlapReply *rs )
1056 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1057 syncprov_info_t *si = on->on_bi.bi_private;
1058 syncops *so, *soprev;
1060 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1061 for ( so=si->si_ops, soprev = (syncops *)&si->si_ops; so;
1062 soprev=so, so=so->s_next ) {
1063 if ( so->s_op->o_connid == op->o_connid &&
1064 so->s_op->o_msgid == op->orn_msgid ) {
1065 so->s_op->o_abandon = 1;
1066 soprev->s_next = so->s_next;
1070 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1072 /* Is this really a Cancel exop? */
1073 if ( op->o_tag != LDAP_REQ_ABANDON ) {
1074 so->s_op->o_cancel = SLAP_CANCEL_ACK;
1075 rs->sr_err = LDAP_CANCELLED;
1076 send_ldap_result( so->s_op, rs );
1077 if ( so->s_flags & PS_IS_DETACHED ) {
1079 cb = op->o_tmpcalloc( 1, sizeof(slap_callback), op->o_tmpmemctx );
1080 cb->sc_cleanup = syncprov_ab_cleanup;
1081 cb->sc_next = op->o_callback;
1082 cb->sc_private = so;
1083 return SLAP_CB_CONTINUE;
1086 syncprov_drop_psearch( so, 0 );
1088 return SLAP_CB_CONTINUE;
1091 /* Find which persistent searches are affected by this operation */
1093 syncprov_matchops( Operation *op, opcookie *opc, int saveit )
1095 slap_overinst *on = opc->son;
1096 syncprov_info_t *si = on->on_bi.bi_private;
1099 syncops *ss, *sprev, *snext;
1103 struct berval newdn;
1105 BackendDB *b0 = op->o_bd, db;
1107 fc.fdn = &op->o_req_ndn;
1108 /* compute new DN */
1109 if ( op->o_tag == LDAP_REQ_MODRDN && !saveit ) {
1111 if ( op->orr_nnewSup ) pdn = *op->orr_nnewSup;
1112 else dnParent( fc.fdn, &pdn );
1113 build_new_dn( &newdn, &pdn, &op->orr_nnewrdn, op->o_tmpmemctx );
1117 if ( op->o_tag != LDAP_REQ_ADD ) {
1118 if ( !SLAP_ISOVERLAY( op->o_bd )) {
1122 rc = overlay_entry_get_ov( op, fc.fdn, NULL, NULL, 0, &e, on );
1123 /* If we're sending responses now, make a copy and unlock the DB */
1124 if ( e && !saveit ) {
1125 Entry *e2 = entry_dup( e );
1126 overlay_entry_release_ov( op, e, 0, on );
1137 if ( saveit || op->o_tag == LDAP_REQ_ADD ) {
1138 ber_dupbv_x( &opc->sdn, &e->e_name, op->o_tmpmemctx );
1139 ber_dupbv_x( &opc->sndn, &e->e_nname, op->o_tmpmemctx );
1140 opc->sreference = is_entry_referral( e );
1141 a = attr_find( e->e_attrs, slap_schema.si_ad_entryUUID );
1143 ber_dupbv_x( &opc->suuid, &a->a_nvals[0], op->o_tmpmemctx );
1144 } else if ( op->o_tag == LDAP_REQ_MODRDN && !saveit ) {
1145 op->o_tmpfree( opc->sndn.bv_val, op->o_tmpmemctx );
1146 op->o_tmpfree( opc->sdn.bv_val, op->o_tmpmemctx );
1147 ber_dupbv_x( &opc->sdn, &e->e_name, op->o_tmpmemctx );
1148 ber_dupbv_x( &opc->sndn, &e->e_nname, op->o_tmpmemctx );
1151 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1152 for (ss = si->si_ops, sprev = (syncops *)&si->si_ops; ss;
1153 sprev = ss, ss=snext)
1164 /* If the base of the search is missing, signal a refresh */
1165 rc = syncprov_findbase( op, &fc );
1166 if ( rc != LDAP_SUCCESS ) {
1167 SlapReply rs = {REP_RESULT};
1168 send_ldap_error( ss->s_op, &rs, LDAP_SYNC_REFRESH_REQUIRED,
1169 "search base has changed" );
1170 sprev->s_next = snext;
1171 syncprov_drop_psearch( ss, 1 );
1177 /* If we're sending results now, look for this op in old matches */
1181 /* Did we modify the search base? */
1182 if ( dn_match( &op->o_req_ndn, &ss->s_base )) {
1183 ldap_pvt_thread_mutex_lock( &ss->s_mutex );
1184 ss->s_flags |= PS_WROTE_BASE;
1185 ldap_pvt_thread_mutex_unlock( &ss->s_mutex );
1188 for ( sm=opc->smatches, old=(syncmatches *)&opc->smatches; sm;
1189 old=sm, sm=sm->sm_next ) {
1190 if ( sm->sm_op == ss ) {
1192 old->sm_next = sm->sm_next;
1193 op->o_tmpfree( sm, op->o_tmpmemctx );
1199 /* check if current o_req_dn is in scope and matches filter */
1200 if ( fc.fscope && test_filter( op, e, ss->s_op->ors_filter ) ==
1201 LDAP_COMPARE_TRUE ) {
1203 sm = op->o_tmpalloc( sizeof(syncmatches), op->o_tmpmemctx );
1204 sm->sm_next = opc->smatches;
1206 ldap_pvt_thread_mutex_lock( &ss->s_mutex );
1208 ldap_pvt_thread_mutex_unlock( &ss->s_mutex );
1211 /* if found send UPDATE else send ADD */
1212 syncprov_qresp( opc, ss,
1213 found ? LDAP_SYNC_MODIFY : LDAP_SYNC_ADD );
1215 } else if ( !saveit && found ) {
1217 syncprov_qresp( opc, ss, LDAP_SYNC_DELETE );
1220 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1222 if ( op->o_tag != LDAP_REQ_ADD && e ) {
1223 if ( !SLAP_ISOVERLAY( op->o_bd )) {
1226 overlay_entry_release_ov( op, e, 0, on );
1230 op->o_tmpfree( fc.fdn->bv_val, op->o_tmpmemctx );
1236 syncprov_op_cleanup( Operation *op, SlapReply *rs )
1238 slap_callback *cb = op->o_callback;
1239 opcookie *opc = cb->sc_private;
1240 slap_overinst *on = opc->son;
1241 syncprov_info_t *si = on->on_bi.bi_private;
1242 syncmatches *sm, *snext;
1243 modtarget *mt, mtdummy;
1245 for (sm = opc->smatches; sm; sm=snext) {
1246 snext = sm->sm_next;
1247 syncprov_free_syncop( sm->sm_op );
1248 op->o_tmpfree( sm, op->o_tmpmemctx );
1251 /* Remove op from lock table */
1253 ldap_pvt_thread_mutex_lock( &si->si_mods_mutex );
1254 mt = avl_find( si->si_mods, &mtdummy, sp_avl_cmp );
1256 modinst *mi = mt->mt_mods;
1258 /* If there are more, promote the next one */
1259 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
1260 if ( mi->mi_next ) {
1261 mt->mt_mods = mi->mi_next;
1262 mt->mt_op = mt->mt_mods->mi_op;
1263 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1265 avl_delete( &si->si_mods, mt, sp_avl_cmp );
1266 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1267 ldap_pvt_thread_mutex_destroy( &mt->mt_mutex );
1271 ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
1272 if ( !BER_BVISNULL( &opc->suuid ))
1273 op->o_tmpfree( opc->suuid.bv_val, op->o_tmpmemctx );
1274 if ( !BER_BVISNULL( &opc->sndn ))
1275 op->o_tmpfree( opc->sndn.bv_val, op->o_tmpmemctx );
1276 if ( !BER_BVISNULL( &opc->sdn ))
1277 op->o_tmpfree( opc->sdn.bv_val, op->o_tmpmemctx );
1278 op->o_callback = cb->sc_next;
1279 op->o_tmpfree(cb, op->o_tmpmemctx);
1285 syncprov_checkpoint( Operation *op, SlapReply *rs, slap_overinst *on )
1287 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
1290 SlapReply rsm = { 0 };
1291 slap_callback cb = {0};
1293 mod.sml_values = si->si_ctxcsn;
1294 mod.sml_nvalues = NULL;
1295 mod.sml_desc = slap_schema.si_ad_contextCSN;
1296 mod.sml_op = LDAP_MOD_REPLACE;
1298 mod.sml_next = NULL;
1300 cb.sc_response = slap_null_cb;
1302 opm.o_tag = LDAP_REQ_MODIFY;
1303 opm.o_callback = &cb;
1304 opm.orm_modlist = &mod;
1305 opm.orm_no_opattrs = 1;
1306 opm.o_req_dn = op->o_bd->be_suffix[0];
1307 opm.o_req_ndn = op->o_bd->be_nsuffix[0];
1308 opm.o_bd->bd_info = on->on_info->oi_orig;
1309 opm.o_managedsait = SLAP_CONTROL_NONCRITICAL;
1310 opm.o_no_schema_check = 1;
1311 opm.o_bd->be_modify( &opm, &rsm );
1312 if ( mod.sml_next != NULL ) {
1313 slap_mods_free( mod.sml_next, 1 );
1318 syncprov_add_slog( Operation *op )
1320 opcookie *opc = op->o_callback->sc_private;
1321 slap_overinst *on = opc->son;
1322 syncprov_info_t *si = on->on_bi.bi_private;
1328 /* Allocate a record. UUIDs are not NUL-terminated. */
1329 se = ch_malloc( sizeof( slog_entry ) + opc->suuid.bv_len +
1330 op->o_csn.bv_len + 1 );
1332 se->se_tag = op->o_tag;
1334 se->se_uuid.bv_val = (char *)(&se[1]);
1335 AC_MEMCPY( se->se_uuid.bv_val, opc->suuid.bv_val, opc->suuid.bv_len );
1336 se->se_uuid.bv_len = opc->suuid.bv_len;
1338 se->se_csn.bv_val = se->se_uuid.bv_val + opc->suuid.bv_len;
1339 AC_MEMCPY( se->se_csn.bv_val, op->o_csn.bv_val, op->o_csn.bv_len );
1340 se->se_csn.bv_val[op->o_csn.bv_len] = '\0';
1341 se->se_csn.bv_len = op->o_csn.bv_len;
1342 se->se_sid = slap_parse_csn_sid( &se->se_csn );
1344 ldap_pvt_thread_mutex_lock( &sl->sl_mutex );
1345 if ( sl->sl_head ) {
1346 sl->sl_tail->se_next = se;
1352 while ( sl->sl_num > sl->sl_size ) {
1354 sl->sl_head = se->se_next;
1355 strcpy( sl->sl_mincsn.bv_val, se->se_csn.bv_val );
1356 sl->sl_mincsn.bv_len = se->se_csn.bv_len;
1360 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1364 /* Just set a flag if we found the matching entry */
1366 playlog_cb( Operation *op, SlapReply *rs )
1368 if ( rs->sr_type == REP_SEARCH ) {
1369 op->o_callback->sc_private = (void *)1;
1374 /* enter with sl->sl_mutex locked, release before returning */
1376 syncprov_playlog( Operation *op, SlapReply *rs, sessionlog *sl,
1377 sync_control *srs, BerVarray ctxcsn, int numcsns, int *sids )
1379 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1381 int i, j, ndel, num, nmods, mmods;
1382 char cbuf[LDAP_LUTIL_CSNSTR_BUFSIZE];
1384 struct berval delcsn[2];
1386 if ( !sl->sl_num ) {
1387 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1395 uuids = op->o_tmpalloc( (num+1) * sizeof( struct berval ) +
1396 num * UUID_LEN, op->o_tmpmemctx );
1397 uuids[0].bv_val = (char *)(uuids + num + 1);
1399 delcsn[0].bv_len = 0;
1400 delcsn[0].bv_val = cbuf;
1401 BER_BVZERO(&delcsn[1]);
1403 /* Make a copy of the relevant UUIDs. Put the Deletes up front
1404 * and everything else at the end. Do this first so we can
1405 * unlock the list mutex.
1407 Debug( LDAP_DEBUG_SYNC, "srs csn %s\n",
1408 srs->sr_state.ctxcsn[0].bv_val, 0, 0 );
1409 for ( se=sl->sl_head; se; se=se->se_next ) {
1411 Debug( LDAP_DEBUG_SYNC, "log csn %s\n", se->se_csn.bv_val, 0, 0 );
1413 for ( k=0; k<srs->sr_state.numcsns; k++ ) {
1414 if ( se->se_sid == srs->sr_state.sids[k] ) {
1415 ndel = ber_bvcmp( &se->se_csn, &srs->sr_state.ctxcsn[k] );
1420 Debug( LDAP_DEBUG_SYNC, "cmp %d, too old\n", ndel, 0, 0 );
1424 for ( k=0; k<numcsns; k++ ) {
1425 if ( se->se_sid == sids[k] ) {
1426 ndel = ber_bvcmp( &se->se_csn, &ctxcsn[k] );
1431 Debug( LDAP_DEBUG_SYNC, "cmp %d, too new\n", ndel, 0, 0 );
1434 if ( se->se_tag == LDAP_REQ_DELETE ) {
1437 AC_MEMCPY( cbuf, se->se_csn.bv_val, se->se_csn.bv_len );
1438 delcsn[0].bv_len = se->se_csn.bv_len;
1439 delcsn[0].bv_val[delcsn[0].bv_len] = '\0';
1444 uuids[j].bv_val = uuids[0].bv_val + (j * UUID_LEN);
1445 AC_MEMCPY(uuids[j].bv_val, se->se_uuid.bv_val, UUID_LEN);
1446 uuids[j].bv_len = UUID_LEN;
1448 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1452 /* Zero out unused slots */
1453 for ( i=ndel; i < num - nmods; i++ )
1454 uuids[i].bv_len = 0;
1456 /* Mods must be validated to see if they belong in this delete set.
1460 /* Strip any duplicates */
1461 for ( i=0; i<nmods; i++ ) {
1462 for ( j=0; j<ndel; j++ ) {
1463 if ( bvmatch( &uuids[j], &uuids[num - 1 - i] )) {
1464 uuids[num - 1 - i].bv_len = 0;
1469 if ( uuids[num - 1 - i].bv_len == 0 ) continue;
1470 for ( j=0; j<i; j++ ) {
1471 if ( bvmatch( &uuids[num - 1 - j], &uuids[num - 1 - i] )) {
1472 uuids[num - 1 - i].bv_len = 0;
1481 SlapReply frs = { REP_RESULT };
1484 #ifdef LDAP_COMP_MATCH
1485 AttributeAssertion eq = { NULL, BER_BVNULL, NULL };
1487 AttributeAssertion eq;
1489 slap_callback cb = {0};
1493 fop.o_sync_mode = 0;
1494 fop.o_callback = &cb;
1495 fop.ors_limit = NULL;
1496 fop.ors_tlimit = SLAP_NO_LIMIT;
1497 fop.ors_attrs = slap_anlist_all_attributes;
1498 fop.ors_attrsonly = 0;
1499 fop.o_managedsait = SLAP_CONTROL_CRITICAL;
1501 af.f_choice = LDAP_FILTER_AND;
1504 mf.f_choice = LDAP_FILTER_EQUALITY;
1506 mf.f_av_desc = slap_schema.si_ad_entryUUID;
1507 mf.f_next = fop.ors_filter;
1509 fop.ors_filter = ⁡
1511 cb.sc_response = playlog_cb;
1512 fop.o_bd->bd_info = on->on_info->oi_orig;
1514 for ( i=ndel; i<num; i++ ) {
1515 if ( uuids[i].bv_len == 0 ) continue;
1517 mf.f_av_value = uuids[i];
1518 cb.sc_private = NULL;
1520 frs.sr_nentries = 0;
1521 rc = fop.o_bd->be_search( &fop, &frs );
1523 /* If entry was not found, add to delete list */
1524 if ( !cb.sc_private ) {
1525 uuids[ndel++] = uuids[i];
1528 fop.o_bd->bd_info = (BackendInfo *)on;
1531 struct berval cookie;
1533 slap_compose_sync_cookie( op, &cookie, delcsn, srs->sr_state.rid,
1534 srs->sr_state.sid );
1535 uuids[ndel].bv_val = NULL;
1536 syncprov_sendinfo( op, rs, LDAP_TAG_SYNC_ID_SET, &cookie, 0, uuids, 1 );
1537 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
1539 op->o_tmpfree( uuids, op->o_tmpmemctx );
1543 syncprov_op_response( Operation *op, SlapReply *rs )
1545 opcookie *opc = op->o_callback->sc_private;
1546 slap_overinst *on = opc->son;
1547 syncprov_info_t *si = on->on_bi.bi_private;
1550 if ( rs->sr_err == LDAP_SUCCESS )
1552 struct berval maxcsn = BER_BVNULL;
1553 char cbuf[LDAP_LUTIL_CSNSTR_BUFSIZE];
1556 /* Update our context CSN */
1558 ldap_pvt_thread_rdwr_wlock( &si->si_csn_rwlock );
1559 slap_get_commit_csn( op, &maxcsn );
1560 if ( !BER_BVISNULL( &maxcsn ) ) {
1562 strcpy( cbuf, maxcsn.bv_val );
1563 sid = slap_parse_csn_sid( &maxcsn );
1564 for ( i=0; i<si->si_numcsns; i++ ) {
1565 if ( sid == si->si_sids[i] ) {
1566 if ( ber_bvcmp( &maxcsn, &si->si_ctxcsn[i] ) > 0 ) {
1567 ber_bvreplace( &si->si_ctxcsn[i], &maxcsn );
1572 /* It's a new SID for us */
1573 if ( i == si->si_numcsns ) {
1574 value_add_one( &si->si_ctxcsn, &maxcsn );
1576 si->si_sids = ch_realloc( si->si_sids, si->si_numcsns *
1578 si->si_sids[i] = sid;
1582 /* Don't do any processing for consumer contextCSN updates */
1583 if ( SLAP_SYNC_SHADOW( op->o_bd ) &&
1584 op->o_msgid == SLAP_SYNC_UPDATE_MSGID ) {
1585 ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
1586 return SLAP_CB_CONTINUE;
1590 if ( si->si_chkops || si->si_chktime ) {
1591 if ( si->si_chkops && si->si_numops >= si->si_chkops ) {
1595 if ( si->si_chktime &&
1596 (op->o_time - si->si_chklast >= si->si_chktime )) {
1598 si->si_chklast = op->o_time;
1601 ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
1604 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
1605 syncprov_checkpoint( op, rs, on );
1606 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
1609 opc->sctxcsn.bv_len = maxcsn.bv_len;
1610 opc->sctxcsn.bv_val = cbuf;
1612 /* Handle any persistent searches */
1616 case LDAP_REQ_MODIFY:
1617 case LDAP_REQ_MODRDN:
1618 case LDAP_REQ_EXTENDED:
1619 syncprov_matchops( op, opc, 0 );
1621 case LDAP_REQ_DELETE:
1622 /* for each match in opc->smatches:
1625 for ( sm = opc->smatches; sm; sm=sm->sm_next ) {
1626 if ( sm->sm_op->s_op->o_abandon )
1628 syncprov_qresp( opc, sm->sm_op, LDAP_SYNC_DELETE );
1634 /* Add any log records */
1635 if ( si->si_logs && op->o_tag != LDAP_REQ_ADD ) {
1636 syncprov_add_slog( op );
1640 return SLAP_CB_CONTINUE;
1643 /* We don't use a subentry to store the context CSN any more.
1644 * We expose the current context CSN as an operational attribute
1645 * of the suffix entry.
1648 syncprov_op_compare( Operation *op, SlapReply *rs )
1650 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1651 syncprov_info_t *si = on->on_bi.bi_private;
1652 int rc = SLAP_CB_CONTINUE;
1654 if ( dn_match( &op->o_req_ndn, op->o_bd->be_nsuffix ) &&
1655 op->oq_compare.rs_ava->aa_desc == slap_schema.si_ad_contextCSN )
1660 e.e_name = op->o_bd->be_suffix[0];
1661 e.e_nname = op->o_bd->be_nsuffix[0];
1664 a.a_desc = slap_schema.si_ad_contextCSN;
1666 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
1668 a.a_vals = si->si_ctxcsn;
1669 a.a_nvals = a.a_vals;
1671 rs->sr_err = access_allowed( op, &e, op->oq_compare.rs_ava->aa_desc,
1672 &op->oq_compare.rs_ava->aa_value, ACL_COMPARE, NULL );
1673 if ( ! rs->sr_err ) {
1674 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1675 goto return_results;
1678 if ( get_assert( op ) &&
1679 ( test_filter( op, &e, get_assertion( op ) ) != LDAP_COMPARE_TRUE ) )
1681 rs->sr_err = LDAP_ASSERTION_FAILED;
1682 goto return_results;
1686 rs->sr_err = LDAP_COMPARE_FALSE;
1688 if ( value_find_ex( op->oq_compare.rs_ava->aa_desc,
1689 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
1690 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
1691 a.a_nvals, &op->oq_compare.rs_ava->aa_value, op->o_tmpmemctx ) == 0 )
1693 rs->sr_err = LDAP_COMPARE_TRUE;
1698 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
1700 send_ldap_result( op, rs );
1702 if( rs->sr_err == LDAP_COMPARE_FALSE || rs->sr_err == LDAP_COMPARE_TRUE ) {
1703 rs->sr_err = LDAP_SUCCESS;
1712 syncprov_op_mod( Operation *op, SlapReply *rs )
1714 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1715 syncprov_info_t *si = on->on_bi.bi_private;
1717 slap_callback *cb = op->o_tmpcalloc(1, sizeof(slap_callback)+
1719 (si->si_ops ? sizeof(modinst) : 0 ),
1721 opcookie *opc = (opcookie *)(cb+1);
1723 cb->sc_response = syncprov_op_response;
1724 cb->sc_cleanup = syncprov_op_cleanup;
1725 cb->sc_private = opc;
1726 cb->sc_next = op->o_callback;
1727 op->o_callback = cb;
1729 /* If there are active persistent searches, lock this operation.
1730 * See seqmod.c for the locking logic on its own.
1733 modtarget *mt, mtdummy;
1736 mi = (modinst *)(opc+1);
1739 /* See if we're already modifying this entry... */
1741 ldap_pvt_thread_mutex_lock( &si->si_mods_mutex );
1742 mt = avl_find( si->si_mods, &mtdummy, sp_avl_cmp );
1744 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
1745 ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
1746 mt->mt_tail->mi_next = mi;
1748 /* wait for this op to get to head of list */
1749 while ( mt->mt_mods != mi ) {
1750 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1751 ldap_pvt_thread_yield();
1752 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
1754 /* clean up if the caller is giving up */
1755 if ( op->o_abandon ) {
1757 for ( m2 = mt->mt_mods; m2->mi_next != mi;
1759 m2->mi_next = mi->mi_next;
1760 if ( mt->mt_tail == mi ) mt->mt_tail = m2;
1761 op->o_tmpfree( cb, op->o_tmpmemctx );
1762 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1763 return SLAPD_ABANDON;
1766 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1768 /* Record that we're modifying this entry now */
1769 mt = ch_malloc( sizeof(modtarget) );
1772 mt->mt_op = mi->mi_op;
1773 ldap_pvt_thread_mutex_init( &mt->mt_mutex );
1774 avl_insert( &si->si_mods, mt, sp_avl_cmp, avl_dup_error );
1775 ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
1779 if (( si->si_ops || si->si_logs ) && op->o_tag != LDAP_REQ_ADD )
1780 syncprov_matchops( op, opc, 1 );
1782 return SLAP_CB_CONTINUE;
1786 syncprov_op_extended( Operation *op, SlapReply *rs )
1788 if ( exop_is_write( op ))
1789 return syncprov_op_mod( op, rs );
1791 return SLAP_CB_CONTINUE;
1794 typedef struct searchstate {
1795 slap_overinst *ss_on;
1797 BerVarray ss_ctxcsn;
1804 syncprov_search_cleanup( Operation *op, SlapReply *rs )
1806 if ( rs->sr_ctrls ) {
1807 op->o_tmpfree( rs->sr_ctrls[0], op->o_tmpmemctx );
1808 op->o_tmpfree( rs->sr_ctrls, op->o_tmpmemctx );
1809 rs->sr_ctrls = NULL;
1815 syncprov_detach_op( Operation *op, syncops *so, slap_overinst *on )
1821 GroupAssertion *g1, *g2;
1823 /* count the search attrs */
1824 for (i=0; op->ors_attrs && !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++) {
1825 alen += op->ors_attrs[i].an_name.bv_len + 1;
1827 /* Make a new copy of the operation */
1828 size = sizeof(Operation) + sizeof(Opheader) +
1829 (i ? ( (i+1) * sizeof(AttributeName) + alen) : 0) +
1830 op->o_req_dn.bv_len + 1 +
1831 op->o_req_ndn.bv_len + 1 +
1832 op->o_ndn.bv_len + 1 +
1833 so->s_filterstr.bv_len + 1;
1834 op2 = (Operation *)ch_calloc( 1, size );
1835 op2->o_hdr = (Opheader *)(op2+1);
1837 /* Copy the fields we care about explicitly, leave the rest alone */
1838 *op2->o_hdr = *op->o_hdr;
1839 op2->o_tag = op->o_tag;
1840 op2->o_time = op->o_time;
1841 op2->o_bd = on->on_info->oi_origdb;
1842 op2->o_request = op->o_request;
1843 op2->o_private = on;
1846 op2->ors_attrs = (AttributeName *)(op2->o_hdr + 1);
1847 ptr = (char *)(op2->ors_attrs+i+1);
1848 for (i=0; !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++) {
1849 op2->ors_attrs[i] = op->ors_attrs[i];
1850 op2->ors_attrs[i].an_name.bv_val = ptr;
1851 ptr = lutil_strcopy( ptr, op->ors_attrs[i].an_name.bv_val ) + 1;
1853 BER_BVZERO( &op2->ors_attrs[i].an_name );
1855 ptr = (char *)(op2->o_hdr + 1);
1857 op2->o_authz = op->o_authz;
1858 op2->o_ndn.bv_val = ptr;
1859 ptr = lutil_strcopy(ptr, op->o_ndn.bv_val) + 1;
1860 op2->o_dn = op2->o_ndn;
1861 op2->o_req_dn.bv_len = op->o_req_dn.bv_len;
1862 op2->o_req_dn.bv_val = ptr;
1863 ptr = lutil_strcopy(ptr, op->o_req_dn.bv_val) + 1;
1864 op2->o_req_ndn.bv_len = op->o_req_ndn.bv_len;
1865 op2->o_req_ndn.bv_val = ptr;
1866 ptr = lutil_strcopy(ptr, op->o_req_ndn.bv_val) + 1;
1867 op2->ors_filterstr.bv_val = ptr;
1868 strcpy( ptr, so->s_filterstr.bv_val );
1869 op2->ors_filterstr.bv_len = so->s_filterstr.bv_len;
1871 /* Skip the AND/GE clause that we stuck on in front */
1872 if ( so->s_flags & PS_FIX_FILTER ) {
1873 op2->ors_filter = op->ors_filter->f_and->f_next;
1874 so->s_flags ^= PS_FIX_FILTER;
1876 op2->ors_filter = op->ors_filter;
1878 op2->ors_filter = filter_dup( op2->ors_filter, NULL );
1881 /* Copy any cached group ACLs individually */
1882 op2->o_groups = NULL;
1883 for ( g1=op->o_groups; g1; g1=g1->ga_next ) {
1884 g2 = ch_malloc( sizeof(GroupAssertion) + g1->ga_len );
1886 strcpy( g2->ga_ndn, g1->ga_ndn );
1887 g2->ga_next = op2->o_groups;
1890 /* Don't allow any further group caching */
1891 op2->o_do_not_cache = 1;
1893 /* Add op2 to conn so abandon will find us */
1894 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1895 op->o_conn->c_n_ops_executing++;
1896 op->o_conn->c_n_ops_completed--;
1897 LDAP_STAILQ_INSERT_TAIL( &op->o_conn->c_ops, op2, o_next );
1898 so->s_flags |= PS_IS_DETACHED;
1899 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1901 /* Prevent anyone else from trying to send a result for this op */
1906 syncprov_search_response( Operation *op, SlapReply *rs )
1908 searchstate *ss = op->o_callback->sc_private;
1909 slap_overinst *on = ss->ss_on;
1910 sync_control *srs = op->o_controls[slap_cids.sc_LDAPsync];
1912 if ( rs->sr_type == REP_SEARCH || rs->sr_type == REP_SEARCHREF ) {
1914 /* If we got a referral without a referral object, there's
1915 * something missing that we cannot replicate. Just ignore it.
1916 * The consumer will abort because we didn't send the expected
1919 if ( !rs->sr_entry ) {
1920 assert( rs->sr_entry != NULL );
1921 Debug( LDAP_DEBUG_ANY, "bogus referral in context\n",0,0,0 );
1922 return SLAP_CB_CONTINUE;
1924 a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_entryCSN );
1925 if ( a == NULL && rs->sr_operational_attrs != NULL ) {
1926 a = attr_find( rs->sr_operational_attrs, slap_schema.si_ad_entryCSN );
1930 sid = slap_parse_csn_sid( &a->a_nvals[0] );
1932 /* Don't send changed entries back to the originator */
1933 if ( sid == srs->sr_state.sid && srs->sr_state.numcsns ) {
1934 Debug( LDAP_DEBUG_SYNC,
1935 "Entry %s changed by peer, ignored\n",
1936 rs->sr_entry->e_name.bv_val, 0, 0 );
1937 return LDAP_SUCCESS;
1939 /* Make sure entry is less than the snapshot'd contextCSN */
1940 for ( i=0; i<ss->ss_numcsns; i++ ) {
1941 if ( sid == ss->ss_sids[i] && ber_bvcmp( &a->a_nvals[0],
1942 &ss->ss_ctxcsn[i] ) > 0 ) {
1943 Debug( LDAP_DEBUG_SYNC,
1944 "Entry %s CSN %s greater than snapshot %s\n",
1945 rs->sr_entry->e_name.bv_val,
1946 a->a_nvals[0].bv_val,
1947 ss->ss_ctxcsn[i].bv_val );
1948 return LDAP_SUCCESS;
1952 /* Don't send old entries twice */
1953 if ( srs->sr_state.ctxcsn ) {
1954 for ( i=0; i<srs->sr_state.numcsns; i++ ) {
1955 if ( sid == srs->sr_state.sids[i] &&
1956 ber_bvcmp( &a->a_nvals[0],
1957 &srs->sr_state.ctxcsn[i] )<= 0 ) {
1958 Debug( LDAP_DEBUG_SYNC,
1959 "Entry %s CSN %s older or equal to ctx %s\n",
1960 rs->sr_entry->e_name.bv_val,
1961 a->a_nvals[0].bv_val,
1962 srs->sr_state.ctxcsn[i].bv_val );
1963 return LDAP_SUCCESS;
1968 rs->sr_ctrls = op->o_tmpalloc( sizeof(LDAPControl *)*2,
1970 rs->sr_ctrls[1] = NULL;
1971 rs->sr_err = syncprov_state_ctrl( op, rs, rs->sr_entry,
1972 LDAP_SYNC_ADD, rs->sr_ctrls, 0, 0, NULL );
1973 } else if ( rs->sr_type == REP_RESULT && rs->sr_err == LDAP_SUCCESS ) {
1974 struct berval cookie;
1976 slap_compose_sync_cookie( op, &cookie, ss->ss_ctxcsn,
1977 srs->sr_state.rid, srs->sr_state.sid );
1979 /* Is this a regular refresh? */
1981 rs->sr_ctrls = op->o_tmpalloc( sizeof(LDAPControl *)*2,
1983 rs->sr_ctrls[1] = NULL;
1984 rs->sr_err = syncprov_done_ctrl( op, rs, rs->sr_ctrls,
1985 0, 1, &cookie, ss->ss_present ? LDAP_SYNC_REFRESH_PRESENTS :
1986 LDAP_SYNC_REFRESH_DELETES );
1987 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
1989 /* It's RefreshAndPersist, transition to Persist phase */
1990 syncprov_sendinfo( op, rs, ss->ss_present ?
1991 LDAP_TAG_SYNC_REFRESH_PRESENT : LDAP_TAG_SYNC_REFRESH_DELETE,
1992 &cookie, 1, NULL, 0 );
1993 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
1995 /* Detach this Op from frontend control */
1996 ldap_pvt_thread_mutex_lock( &ss->ss_so->s_mutex );
1998 /* Turn off the refreshing flag */
1999 ss->ss_so->s_flags ^= PS_IS_REFRESHING;
2001 syncprov_detach_op( op, ss->ss_so, on );
2003 /* If there are queued responses, fire them off */
2004 if ( ss->ss_so->s_res )
2005 syncprov_qstart( ss->ss_so );
2006 ldap_pvt_thread_mutex_unlock( &ss->ss_so->s_mutex );
2008 return LDAP_SUCCESS;
2012 return SLAP_CB_CONTINUE;
2016 syncprov_op_search( Operation *op, SlapReply *rs )
2018 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
2019 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2021 int gotstate = 0, nochange = 0, do_present;
2022 syncops *sop = NULL;
2026 int i, *sids, numcsns;
2027 struct berval mincsn;
2029 if ( !(op->o_sync_mode & SLAP_SYNC_REFRESH) ) return SLAP_CB_CONTINUE;
2031 if ( op->ors_deref & LDAP_DEREF_SEARCHING ) {
2032 send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR, "illegal value for derefAliases" );
2036 do_present = si->si_nopres ? 0 : 1;
2038 srs = op->o_controls[slap_cids.sc_LDAPsync];
2039 op->o_managedsait = SLAP_CONTROL_NONCRITICAL;
2041 /* If this is a persistent search, set it up right away */
2042 if ( op->o_sync_mode & SLAP_SYNC_PERSIST ) {
2052 so.s_flags = PS_IS_REFRESHING | PS_FIND_BASE;
2053 /* syncprov_findbase expects to be called as a callback... */
2054 sc.sc_private = &opc;
2056 ldap_pvt_thread_mutex_init( &so.s_mutex );
2057 cb = op->o_callback;
2058 op->o_callback = ≻
2059 rs->sr_err = syncprov_findbase( op, &fc );
2060 op->o_callback = cb;
2061 ldap_pvt_thread_mutex_destroy( &so.s_mutex );
2063 if ( rs->sr_err != LDAP_SUCCESS ) {
2064 send_ldap_result( op, rs );
2067 sop = ch_malloc( sizeof( syncops ));
2069 ldap_pvt_thread_mutex_init( &sop->s_mutex );
2070 sop->s_rid = srs->sr_state.rid;
2071 sop->s_sid = srs->sr_state.sid;
2074 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
2075 sop->s_next = si->si_ops;
2077 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
2080 /* snapshot the ctxcsn */
2081 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
2082 numcsns = si->si_numcsns;
2084 ber_bvarray_dup_x( &ctxcsn, si->si_ctxcsn, op->o_tmpmemctx );
2085 sids = op->o_tmpalloc( numcsns * sizeof(int), op->o_tmpmemctx );
2086 for ( i=0; i<numcsns; i++ )
2087 sids[i] = si->si_sids[i];
2092 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
2094 /* If we have a cookie, handle the PRESENT lookups */
2095 if ( srs->sr_state.ctxcsn ) {
2099 /* If we don't have any CSN of our own yet, pretend nothing
2105 /* If there are SIDs we don't recognize in the cookie, drop them */
2106 for (i=0; i<srs->sr_state.numcsns; ) {
2107 for (j=0; j<numcsns; j++) {
2108 if ( srs->sr_state.sids[i] == sids[j] ) {
2113 if ( j == numcsns ) {
2114 struct berval tmp = srs->sr_state.ctxcsn[i];
2115 j = srs->sr_state.numcsns - 1;
2116 srs->sr_state.ctxcsn[i] = srs->sr_state.ctxcsn[j];
2118 srs->sr_state.ctxcsn[j] = tmp;
2119 srs->sr_state.numcsns = j;
2120 srs->sr_state.sids[i] = srs->sr_state.sids[j];
2126 /* Find the smallest CSN */
2127 mincsn = srs->sr_state.ctxcsn[0];
2128 for ( i=1; i<srs->sr_state.numcsns; i++ ) {
2129 if ( ber_bvcmp( &mincsn, &srs->sr_state.ctxcsn[i] ) > 0 )
2130 mincsn = srs->sr_state.ctxcsn[i];
2133 /* If nothing has changed, shortcut it */
2134 if ( srs->sr_state.numcsns == numcsns ) {
2135 int i, j, changed = 0;
2136 for ( i=0; i<srs->sr_state.numcsns; i++ ) {
2137 for ( j=0; j<numcsns; j++ ) {
2138 if ( srs->sr_state.sids[i] != sids[j] )
2140 if ( !bvmatch( &srs->sr_state.ctxcsn[i], &ctxcsn[j] ))
2148 no_change: nochange = 1;
2149 if ( !(op->o_sync_mode & SLAP_SYNC_PERSIST) ) {
2150 LDAPControl *ctrls[2];
2154 syncprov_done_ctrl( op, rs, ctrls, 0, 0,
2155 NULL, LDAP_SYNC_REFRESH_DELETES );
2156 rs->sr_ctrls = ctrls;
2157 rs->sr_err = LDAP_SUCCESS;
2158 send_ldap_result( op, rs );
2159 rs->sr_ctrls = NULL;
2165 /* Do we have a sessionlog for this search? */
2168 ldap_pvt_thread_mutex_lock( &sl->sl_mutex );
2169 /* Are there any log entries, and is the consumer state
2170 * present in the session log?
2172 if ( sl->sl_num > 0 && ber_bvcmp( &mincsn, &sl->sl_mincsn ) >= 0 ) {
2174 /* mutex is unlocked in playlog */
2175 syncprov_playlog( op, rs, sl, srs, ctxcsn, numcsns, sids );
2177 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
2180 /* Is the CSN still present in the database? */
2181 if ( syncprov_findcsn( op, FIND_CSN ) != LDAP_SUCCESS ) {
2182 /* No, so a reload is required */
2183 /* the 2.2 consumer doesn't send this hint */
2184 if ( si->si_usehint && srs->sr_rhint == 0 ) {
2186 ber_bvarray_free_x( ctxcsn, op->o_tmpmemctx );
2187 send_ldap_error( op, rs, LDAP_SYNC_REFRESH_REQUIRED, "sync cookie is stale" );
2192 /* If changed and doing Present lookup, send Present UUIDs */
2193 if ( do_present && syncprov_findcsn( op, FIND_PRESENT ) !=
2196 ber_bvarray_free_x( ctxcsn, op->o_tmpmemctx );
2197 send_ldap_result( op, rs );
2204 /* Append CSN range to search filter, save original filter
2205 * for persistent search evaluation
2208 sop->s_filterstr= op->ors_filterstr;
2211 /* If something changed, find the changes */
2212 if ( gotstate && !nochange ) {
2213 Filter *fand, *fava;
2215 fand = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
2216 fand->f_choice = LDAP_FILTER_AND;
2217 fand->f_next = NULL;
2218 fava = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
2220 fava->f_choice = LDAP_FILTER_GE;
2221 fava->f_ava = op->o_tmpalloc( sizeof(AttributeAssertion), op->o_tmpmemctx );
2222 fava->f_ava->aa_desc = slap_schema.si_ad_entryCSN;
2223 #ifdef LDAP_COMP_MATCH
2224 fava->f_ava->aa_cf = NULL;
2226 ber_dupbv_x( &fava->f_ava->aa_value, &mincsn, op->o_tmpmemctx );
2227 fava->f_next = op->ors_filter;
2228 op->ors_filter = fand;
2229 filter2bv_x( op, op->ors_filter, &op->ors_filterstr );
2231 sop->s_flags |= PS_FIX_FILTER;
2234 /* Let our callback add needed info to returned entries */
2235 cb = op->o_tmpcalloc(1, sizeof(slap_callback)+sizeof(searchstate), op->o_tmpmemctx);
2236 ss = (searchstate *)(cb+1);
2239 ss->ss_present = do_present;
2240 ss->ss_ctxcsn = ctxcsn;
2241 ss->ss_numcsns = numcsns;
2243 cb->sc_response = syncprov_search_response;
2244 cb->sc_cleanup = syncprov_search_cleanup;
2245 cb->sc_private = ss;
2246 cb->sc_next = op->o_callback;
2247 op->o_callback = cb;
2249 /* If this is a persistent search and no changes were reported during
2250 * the refresh phase, just invoke the response callback to transition
2251 * us into persist phase
2254 rs->sr_err = LDAP_SUCCESS;
2255 rs->sr_nentries = 0;
2256 send_ldap_result( op, rs );
2259 return SLAP_CB_CONTINUE;
2263 syncprov_operational(
2267 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
2268 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2270 if ( rs->sr_entry &&
2271 dn_match( &rs->sr_entry->e_nname, op->o_bd->be_nsuffix )) {
2273 if ( SLAP_OPATTRS( rs->sr_attr_flags ) ||
2274 ad_inlist( slap_schema.si_ad_contextCSN, rs->sr_attrs )) {
2275 Attribute *a, **ap = NULL;
2277 for ( a=rs->sr_entry->e_attrs; a; a=a->a_next ) {
2278 if ( a->a_desc == slap_schema.si_ad_contextCSN )
2282 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
2283 if ( si->si_ctxcsn ) {
2285 for ( ap = &rs->sr_operational_attrs; *ap;
2286 ap=&(*ap)->a_next );
2288 a = attr_alloc( slap_schema.si_ad_contextCSN );
2293 if ( !rs->sr_flags & REP_ENTRY_MODIFIABLE ) {
2294 rs->sr_entry = entry_dup( rs->sr_entry );
2296 REP_ENTRY_MODIFIABLE|REP_ENTRY_MUSTBEFREED;
2297 a = attr_find( rs->sr_entry->e_attrs,
2298 slap_schema.si_ad_contextCSN );
2302 ber_bvarray_dup_x( &a->a_vals, si->si_ctxcsn, NULL );
2303 a->a_nvals = a->a_vals;
2305 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
2308 return SLAP_CB_CONTINUE;
2318 static ConfigDriver sp_cf_gen;
2320 static ConfigTable spcfg[] = {
2321 { "syncprov-checkpoint", "ops> <minutes", 3, 3, 0, ARG_MAGIC|SP_CHKPT,
2322 sp_cf_gen, "( OLcfgOvAt:1.1 NAME 'olcSpCheckpoint' "
2323 "DESC 'ContextCSN checkpoint interval in ops and minutes' "
2324 "SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
2325 { "syncprov-sessionlog", "ops", 2, 2, 0, ARG_INT|ARG_MAGIC|SP_SESSL,
2326 sp_cf_gen, "( OLcfgOvAt:1.2 NAME 'olcSpSessionlog' "
2327 "DESC 'Session log size in ops' "
2328 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
2329 { "syncprov-nopresent", NULL, 2, 2, 0, ARG_ON_OFF|ARG_MAGIC|SP_NOPRES,
2330 sp_cf_gen, "( OLcfgOvAt:1.3 NAME 'olcSpNoPresent' "
2331 "DESC 'Omit Present phase processing' "
2332 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
2333 { "syncprov-reloadhint", NULL, 2, 2, 0, ARG_ON_OFF|ARG_MAGIC|SP_USEHINT,
2334 sp_cf_gen, "( OLcfgOvAt:1.4 NAME 'olcSpReloadHint' "
2335 "DESC 'Observe Reload Hint in Request control' "
2336 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
2337 { NULL, NULL, 0, 0, 0, ARG_IGNORED }
2340 static ConfigOCs spocs[] = {
2341 { "( OLcfgOvOc:1.1 "
2342 "NAME 'olcSyncProvConfig' "
2343 "DESC 'SyncRepl Provider configuration' "
2344 "SUP olcOverlayConfig "
2345 "MAY ( olcSpCheckpoint $ olcSpSessionlog $ olcSpNoPresent ) )",
2346 Cft_Overlay, spcfg },
2351 sp_cf_gen(ConfigArgs *c)
2353 slap_overinst *on = (slap_overinst *)c->bi;
2354 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2357 if ( c->op == SLAP_CONFIG_EMIT ) {
2358 switch ( c->type ) {
2360 if ( si->si_chkops || si->si_chktime ) {
2362 bv.bv_len = sprintf( c->msg, "%d %d",
2363 si->si_chkops, si->si_chktime );
2365 value_add_one( &c->rvalue_vals, &bv );
2371 if ( si->si_logs ) {
2372 c->value_int = si->si_logs->sl_size;
2378 if ( si->si_nopres ) {
2385 if ( si->si_usehint ) {
2393 } else if ( c->op == LDAP_MOD_DELETE ) {
2394 switch ( c->type ) {
2401 si->si_logs->sl_size = 0;
2403 rc = LDAP_NO_SUCH_ATTRIBUTE;
2406 if ( si->si_nopres )
2409 rc = LDAP_NO_SUCH_ATTRIBUTE;
2412 if ( si->si_usehint )
2415 rc = LDAP_NO_SUCH_ATTRIBUTE;
2420 switch ( c->type ) {
2422 if ( lutil_atoi( &si->si_chkops, c->argv[1] ) != 0 ) {
2423 snprintf( c->msg, sizeof( c->msg ), "%s unable to parse checkpoint ops # \"%s\"",
2424 c->argv[0], c->argv[1] );
2425 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2426 "%s: %s\n", c->log, c->msg, 0 );
2427 return ARG_BAD_CONF;
2429 if ( si->si_chkops <= 0 ) {
2430 snprintf( c->msg, sizeof( c->msg ), "%s invalid checkpoint ops # \"%d\"",
2431 c->argv[0], si->si_chkops );
2432 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2433 "%s: %s\n", c->log, c->msg, 0 );
2434 return ARG_BAD_CONF;
2436 if ( lutil_atoi( &si->si_chktime, c->argv[2] ) != 0 ) {
2437 snprintf( c->msg, sizeof( c->msg ), "%s unable to parse checkpoint time \"%s\"",
2438 c->argv[0], c->argv[1] );
2439 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2440 "%s: %s\n", c->log, c->msg, 0 );
2441 return ARG_BAD_CONF;
2443 if ( si->si_chktime <= 0 ) {
2444 snprintf( c->msg, sizeof( c->msg ), "%s invalid checkpoint time \"%d\"",
2445 c->argv[0], si->si_chkops );
2446 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2447 "%s: %s\n", c->log, c->msg, 0 );
2448 return ARG_BAD_CONF;
2450 si->si_chktime *= 60;
2454 int size = c->value_int;
2457 snprintf( c->msg, sizeof( c->msg ), "%s size %d is negative",
2459 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2460 "%s: %s\n", c->log, c->msg, 0 );
2461 return ARG_BAD_CONF;
2465 sl = ch_malloc( sizeof( sessionlog ) + LDAP_LUTIL_CSNSTR_BUFSIZE );
2466 sl->sl_mincsn.bv_val = (char *)(sl+1);
2467 sl->sl_mincsn.bv_len = 0;
2469 sl->sl_head = sl->sl_tail = NULL;
2470 ldap_pvt_thread_mutex_init( &sl->sl_mutex );
2477 si->si_nopres = c->value_int;
2480 si->si_usehint = c->value_int;
2486 /* ITS#3456 we cannot run this search on the main thread, must use a
2487 * child thread in order to insure we have a big enough stack.
2494 syncprov_findcsn( ptr, FIND_MAXCSN );
2498 /* Read any existing contextCSN from the underlying db.
2499 * Then search for any entries newer than that. If no value exists,
2500 * just generate it. Cache whatever result.
2507 slap_overinst *on = (slap_overinst *) be->bd_info;
2508 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2510 Connection conn = { 0 };
2511 OperationBuffer opbuf = { 0 };
2512 Operation *op = (Operation *) &opbuf;
2516 void *thrctx = NULL;
2518 if ( !SLAP_LASTMOD( be )) {
2519 Debug( LDAP_DEBUG_ANY,
2520 "syncprov_db_open: invalid config, lastmod must be enabled\n", 0, 0, 0 );
2524 if ( slapMode & SLAP_TOOL_MODE ) {
2528 rc = overlay_register_control( be, LDAP_CONTROL_SYNC );
2533 thrctx = ldap_pvt_thread_pool_context();
2534 connection_fake_init( &conn, op, thrctx );
2536 op->o_dn = be->be_rootdn;
2537 op->o_ndn = be->be_rootndn;
2539 rc = overlay_entry_get_ov( op, be->be_nsuffix, NULL,
2540 slap_schema.si_ad_contextCSN, 0, &e, on );
2543 ldap_pvt_thread_t tid;
2545 a = attr_find( e->e_attrs, slap_schema.si_ad_contextCSN );
2548 ber_bvarray_dup_x( &si->si_ctxcsn, a->a_vals, NULL );
2549 for ( i = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ );
2551 si->si_sids = slap_parse_csn_sids( si->si_ctxcsn, i, NULL );
2553 overlay_entry_release_ov( op, e, 0, on );
2554 if ( si->si_ctxcsn ) {
2555 op->o_req_dn = be->be_suffix[0];
2556 op->o_req_ndn = be->be_nsuffix[0];
2557 op->ors_scope = LDAP_SCOPE_SUBTREE;
2558 ldap_pvt_thread_create( &tid, 0, syncprov_db_otask, op );
2559 ldap_pvt_thread_join( tid, NULL );
2563 /* Didn't find a contextCSN, should we generate one? */
2564 if ( !si->si_ctxcsn ) {
2565 char csnbuf[ LDAP_LUTIL_CSNSTR_BUFSIZE ];
2568 if ( SLAP_SYNC_SHADOW( op->o_bd )) {
2569 /* If we're also a consumer, then don't generate anything.
2570 * Wait for our provider to send it to us, or for a local
2571 * modify if we have multimaster.
2575 csn.bv_val = csnbuf;
2576 csn.bv_len = sizeof( csnbuf );
2577 slap_get_csn( op, &csn, 0 );
2578 value_add_one( &si->si_ctxcsn, &csn );
2580 si->si_sids = ch_malloc( sizeof(int) );
2581 si->si_sids[0] = slap_serverID;
2583 /* make sure we do a checkpoint on close */
2588 op->o_bd->bd_info = (BackendInfo *)on;
2592 /* Write the current contextCSN into the underlying db.
2599 slap_overinst *on = (slap_overinst *) be->bd_info;
2600 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2602 if ( slapMode & SLAP_TOOL_MODE ) {
2605 if ( si->si_numops ) {
2607 OperationBuffer opbuf;
2608 Operation *op = (Operation *) &opbuf;
2609 SlapReply rs = {REP_RESULT};
2612 thrctx = ldap_pvt_thread_pool_context();
2613 connection_fake_init( &conn, op, thrctx );
2615 op->o_dn = be->be_rootdn;
2616 op->o_ndn = be->be_rootndn;
2617 syncprov_checkpoint( op, &rs, on );
2628 slap_overinst *on = (slap_overinst *)be->bd_info;
2629 syncprov_info_t *si;
2631 if ( SLAP_ISGLOBALOVERLAY( be ) ) {
2632 Debug( LDAP_DEBUG_ANY,
2633 "syncprov must be instantiated within a database.\n",
2638 si = ch_calloc(1, sizeof(syncprov_info_t));
2639 on->on_bi.bi_private = si;
2640 ldap_pvt_thread_rdwr_init( &si->si_csn_rwlock );
2641 ldap_pvt_thread_mutex_init( &si->si_ops_mutex );
2642 ldap_pvt_thread_mutex_init( &si->si_mods_mutex );
2644 csn_anlist[0].an_desc = slap_schema.si_ad_entryCSN;
2645 csn_anlist[0].an_name = slap_schema.si_ad_entryCSN->ad_cname;
2646 csn_anlist[1].an_desc = slap_schema.si_ad_entryUUID;
2647 csn_anlist[1].an_name = slap_schema.si_ad_entryUUID->ad_cname;
2649 uuid_anlist[0].an_desc = slap_schema.si_ad_entryUUID;
2650 uuid_anlist[0].an_name = slap_schema.si_ad_entryUUID->ad_cname;
2656 syncprov_db_destroy(
2660 slap_overinst *on = (slap_overinst *)be->bd_info;
2661 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2664 if ( si->si_logs ) {
2665 slog_entry *se = si->si_logs->sl_head;
2668 slog_entry *se_next = se->se_next;
2673 ch_free( si->si_logs );
2675 if ( si->si_ctxcsn )
2676 ber_bvarray_free( si->si_ctxcsn );
2678 ch_free( si->si_sids );
2679 ldap_pvt_thread_mutex_destroy( &si->si_mods_mutex );
2680 ldap_pvt_thread_mutex_destroy( &si->si_ops_mutex );
2681 ldap_pvt_thread_rdwr_destroy( &si->si_csn_rwlock );
2688 static int syncprov_parseCtrl (
2694 BerElementBuffer berbuf;
2695 BerElement *ber = (BerElement *)&berbuf;
2698 struct berval cookie = BER_BVNULL;
2702 if ( op->o_sync != SLAP_CONTROL_NONE ) {
2703 rs->sr_text = "Sync control specified multiple times";
2704 return LDAP_PROTOCOL_ERROR;
2707 if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
2708 rs->sr_text = "Sync control specified with pagedResults control";
2709 return LDAP_PROTOCOL_ERROR;
2712 if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
2713 rs->sr_text = "Sync control value is absent";
2714 return LDAP_PROTOCOL_ERROR;
2717 if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
2718 rs->sr_text = "Sync control value is empty";
2719 return LDAP_PROTOCOL_ERROR;
2722 /* Parse the control value
2723 * syncRequestValue ::= SEQUENCE {
2728 * refreshAndPersist (3)
2730 * cookie syncCookie OPTIONAL
2734 ber_init2( ber, &ctrl->ldctl_value, 0 );
2736 if ( (tag = ber_scanf( ber, "{i" /*}*/, &mode )) == LBER_ERROR ) {
2737 rs->sr_text = "Sync control : mode decoding error";
2738 return LDAP_PROTOCOL_ERROR;
2742 case LDAP_SYNC_REFRESH_ONLY:
2743 mode = SLAP_SYNC_REFRESH;
2745 case LDAP_SYNC_REFRESH_AND_PERSIST:
2746 mode = SLAP_SYNC_REFRESH_AND_PERSIST;
2749 rs->sr_text = "Sync control : unknown update mode";
2750 return LDAP_PROTOCOL_ERROR;
2753 tag = ber_peek_tag( ber, &len );
2755 if ( tag == LDAP_TAG_SYNC_COOKIE ) {
2756 if (( ber_scanf( ber, /*{*/ "m", &cookie )) == LBER_ERROR ) {
2757 rs->sr_text = "Sync control : cookie decoding error";
2758 return LDAP_PROTOCOL_ERROR;
2760 tag = ber_peek_tag( ber, &len );
2762 if ( tag == LDAP_TAG_RELOAD_HINT ) {
2763 if (( ber_scanf( ber, /*{*/ "b", &rhint )) == LBER_ERROR ) {
2764 rs->sr_text = "Sync control : rhint decoding error";
2765 return LDAP_PROTOCOL_ERROR;
2768 if (( ber_scanf( ber, /*{*/ "}")) == LBER_ERROR ) {
2769 rs->sr_text = "Sync control : decoding error";
2770 return LDAP_PROTOCOL_ERROR;
2772 sr = op->o_tmpcalloc( 1, sizeof(struct sync_control), op->o_tmpmemctx );
2773 sr->sr_rhint = rhint;
2774 if (!BER_BVISNULL(&cookie)) {
2775 ber_dupbv_x( &sr->sr_state.octet_str, &cookie, op->o_tmpmemctx );
2776 slap_parse_sync_cookie( &sr->sr_state, op->o_tmpmemctx );
2777 if ( sr->sr_state.rid == -1 ) {
2778 rs->sr_text = "Sync control : cookie parsing error";
2779 return LDAP_PROTOCOL_ERROR;
2783 op->o_controls[slap_cids.sc_LDAPsync] = sr;
2785 op->o_sync = ctrl->ldctl_iscritical
2786 ? SLAP_CONTROL_CRITICAL
2787 : SLAP_CONTROL_NONCRITICAL;
2789 op->o_sync_mode |= mode; /* o_sync_mode shares o_sync */
2791 return LDAP_SUCCESS;
2794 /* This overlay is set up for dynamic loading via moduleload. For static
2795 * configuration, you'll need to arrange for the slap_overinst to be
2796 * initialized and registered by some other function inside slapd.
2799 static slap_overinst syncprov;
2802 syncprov_initialize()
2806 rc = register_supported_control( LDAP_CONTROL_SYNC,
2807 SLAP_CTRL_SEARCH, NULL,
2808 syncprov_parseCtrl, &slap_cids.sc_LDAPsync );
2809 if ( rc != LDAP_SUCCESS ) {
2810 Debug( LDAP_DEBUG_ANY,
2811 "syncprov_init: Failed to register control %d\n", rc, 0, 0 );
2815 syncprov.on_bi.bi_type = "syncprov";
2816 syncprov.on_bi.bi_db_init = syncprov_db_init;
2817 syncprov.on_bi.bi_db_destroy = syncprov_db_destroy;
2818 syncprov.on_bi.bi_db_open = syncprov_db_open;
2819 syncprov.on_bi.bi_db_close = syncprov_db_close;
2821 syncprov.on_bi.bi_op_abandon = syncprov_op_abandon;
2822 syncprov.on_bi.bi_op_cancel = syncprov_op_abandon;
2824 syncprov.on_bi.bi_op_add = syncprov_op_mod;
2825 syncprov.on_bi.bi_op_compare = syncprov_op_compare;
2826 syncprov.on_bi.bi_op_delete = syncprov_op_mod;
2827 syncprov.on_bi.bi_op_modify = syncprov_op_mod;
2828 syncprov.on_bi.bi_op_modrdn = syncprov_op_mod;
2829 syncprov.on_bi.bi_op_search = syncprov_op_search;
2830 syncprov.on_bi.bi_extended = syncprov_op_extended;
2831 syncprov.on_bi.bi_operational = syncprov_operational;
2833 syncprov.on_bi.bi_cf_ocs = spocs;
2835 generic_filter.f_desc = slap_schema.si_ad_objectClass;
2837 rc = config_register_schema( spcfg, spocs );
2838 if ( rc ) return rc;
2840 return overlay_register( &syncprov );
2843 #if SLAPD_OVER_SYNCPROV == SLAPD_MOD_DYNAMIC
2845 init_module( int argc, char *argv[] )
2847 return syncprov_initialize();
2849 #endif /* SLAPD_OVER_SYNCPROV == SLAPD_MOD_DYNAMIC */
2851 #endif /* defined(SLAPD_OVER_SYNCPROV) */