2 /* syncprov.c - syncrepl provider */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 2004-2012 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>
35 /* A modify request on a particular entry */
36 typedef struct modinst {
37 struct modinst *mi_next;
41 typedef struct modtarget {
42 struct modinst *mt_mods;
43 struct modinst *mt_tail;
45 ldap_pvt_thread_mutex_t mt_mutex;
48 /* A queued result of a persistent search */
49 typedef struct syncres {
50 struct syncres *s_next;
60 /* Record of a persistent search */
61 typedef struct syncops {
62 struct syncops *s_next;
63 struct berval s_base; /* ndn of search base */
64 ID s_eid; /* entryID of search base */
65 Operation *s_op; /* search op */
68 struct berval s_filterstr;
69 int s_flags; /* search status */
70 #define PS_IS_REFRESHING 0x01
71 #define PS_IS_DETACHED 0x02
72 #define PS_WROTE_BASE 0x04
73 #define PS_FIND_BASE 0x08
74 #define PS_FIX_FILTER 0x10
75 #define PS_TASK_QUEUED 0x20
77 int s_inuse; /* reference count */
78 struct syncres *s_res;
79 struct syncres *s_restail;
80 ldap_pvt_thread_mutex_t s_mutex;
83 /* A received sync control */
84 typedef struct sync_control {
85 struct sync_cookie sr_state;
89 #if 0 /* moved back to slap.h */
90 #define o_sync o_ctrlflag[slap_cids.sc_LDAPsync]
92 /* o_sync_mode uses data bits of o_sync */
93 #define o_sync_mode o_ctrlflag[slap_cids.sc_LDAPsync]
95 #define SLAP_SYNC_NONE (LDAP_SYNC_NONE<<SLAP_CONTROL_SHIFT)
96 #define SLAP_SYNC_REFRESH (LDAP_SYNC_REFRESH_ONLY<<SLAP_CONTROL_SHIFT)
97 #define SLAP_SYNC_PERSIST (LDAP_SYNC_RESERVED<<SLAP_CONTROL_SHIFT)
98 #define SLAP_SYNC_REFRESH_AND_PERSIST (LDAP_SYNC_REFRESH_AND_PERSIST<<SLAP_CONTROL_SHIFT)
100 /* Record of which searches matched at premodify step */
101 typedef struct syncmatches {
102 struct syncmatches *sm_next;
106 /* Session log data */
107 typedef struct slog_entry {
108 struct slog_entry *se_next;
109 struct berval se_uuid;
110 struct berval se_csn;
115 typedef struct sessionlog {
123 ldap_pvt_thread_mutex_t sl_mutex;
126 /* The main state for this overlay */
127 typedef struct syncprov_info_t {
129 struct berval si_contextdn;
130 BerVarray si_ctxcsn; /* ldapsync context */
133 int si_chkops; /* checkpointing info */
135 int si_numops; /* number of ops since last checkpoint */
136 int si_nopres; /* Skip present phase */
137 int si_usehint; /* use reload hint */
138 int si_active; /* True if there are active mods */
139 int si_dirty; /* True if the context is dirty, i.e changes
140 * have been made without updating the csn. */
141 time_t si_chklast; /* time of last checkpoint */
142 Avlnode *si_mods; /* entries being modified */
144 ldap_pvt_thread_rdwr_t si_csn_rwlock;
145 ldap_pvt_thread_mutex_t si_ops_mutex;
146 ldap_pvt_thread_mutex_t si_mods_mutex;
147 ldap_pvt_thread_mutex_t si_resp_mutex;
150 typedef struct opcookie {
152 syncmatches *smatches;
155 struct berval sdn; /* DN of entry, for deletes */
157 struct berval suuid; /* UUID of entry */
158 struct berval sctxcsn;
159 short osid; /* sid of op csn */
160 short rsid; /* sid of relay */
161 short sreference; /* Is the entry a reference? */
164 typedef struct mutexint {
165 ldap_pvt_thread_mutex_t mi_mutex;
169 typedef struct fbase_cookie {
170 struct berval *fdn; /* DN of a modified entry, for scope testing */
171 syncops *fss; /* persistent search we're testing against */
172 int fbase; /* if TRUE we found the search base and it's still valid */
173 int fscope; /* if TRUE then fdn is within the psearch scope */
176 static AttributeName csn_anlist[3];
177 static AttributeName uuid_anlist[2];
179 /* Build a LDAPsync intermediate state control */
185 int entry_sync_state,
189 struct berval *cookie )
194 BerElementBuffer berbuf;
195 BerElement *ber = (BerElement *)&berbuf;
197 struct berval entryuuid_bv = BER_BVNULL;
199 ber_init2( ber, 0, LBER_USE_DER );
200 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
202 ctrls[num_ctrls] = op->o_tmpalloc( sizeof ( LDAPControl ), op->o_tmpmemctx );
204 for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
205 AttributeDescription *desc = a->a_desc;
206 if ( desc == slap_schema.si_ad_entryUUID ) {
207 entryuuid_bv = a->a_nvals[0];
212 /* FIXME: what if entryuuid is NULL or empty ? */
214 if ( send_cookie && cookie ) {
215 ber_printf( ber, "{eOON}",
216 entry_sync_state, &entryuuid_bv, cookie );
218 ber_printf( ber, "{eON}",
219 entry_sync_state, &entryuuid_bv );
222 ctrls[num_ctrls]->ldctl_oid = LDAP_CONTROL_SYNC_STATE;
223 ctrls[num_ctrls]->ldctl_iscritical = (op->o_sync == SLAP_CONTROL_CRITICAL);
224 ret = ber_flatten2( ber, &ctrls[num_ctrls]->ldctl_value, 1 );
229 Debug( LDAP_DEBUG_TRACE,
230 "slap_build_sync_ctrl: ber_flatten2 failed (%d)\n",
232 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
239 /* Build a LDAPsync final state control */
247 struct berval *cookie,
251 BerElementBuffer berbuf;
252 BerElement *ber = (BerElement *)&berbuf;
254 ber_init2( ber, NULL, LBER_USE_DER );
255 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
257 ctrls[num_ctrls] = op->o_tmpalloc( sizeof ( LDAPControl ), op->o_tmpmemctx );
259 ber_printf( ber, "{" );
260 if ( send_cookie && cookie ) {
261 ber_printf( ber, "O", cookie );
263 if ( refreshDeletes == LDAP_SYNC_REFRESH_DELETES ) {
264 ber_printf( ber, "b", refreshDeletes );
266 ber_printf( ber, "N}" );
268 ctrls[num_ctrls]->ldctl_oid = LDAP_CONTROL_SYNC_DONE;
269 ctrls[num_ctrls]->ldctl_iscritical = (op->o_sync == SLAP_CONTROL_CRITICAL);
270 ret = ber_flatten2( ber, &ctrls[num_ctrls]->ldctl_value, 1 );
275 Debug( LDAP_DEBUG_TRACE,
276 "syncprov_done_ctrl: ber_flatten2 failed (%d)\n",
278 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
290 struct berval *cookie,
295 BerElementBuffer berbuf;
296 BerElement *ber = (BerElement *)&berbuf;
297 struct berval rspdata;
301 ber_init2( ber, NULL, LBER_USE_DER );
302 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
306 case LDAP_TAG_SYNC_NEW_COOKIE:
307 ber_printf( ber, "tO", type, cookie );
309 case LDAP_TAG_SYNC_REFRESH_DELETE:
310 case LDAP_TAG_SYNC_REFRESH_PRESENT:
311 ber_printf( ber, "t{", type );
313 ber_printf( ber, "O", cookie );
315 if ( refreshDone == 0 ) {
316 ber_printf( ber, "b", refreshDone );
318 ber_printf( ber, "N}" );
320 case LDAP_TAG_SYNC_ID_SET:
321 ber_printf( ber, "t{", type );
323 ber_printf( ber, "O", cookie );
325 if ( refreshDeletes == 1 ) {
326 ber_printf( ber, "b", refreshDeletes );
328 ber_printf( ber, "[W]", syncUUIDs );
329 ber_printf( ber, "N}" );
332 Debug( LDAP_DEBUG_TRACE,
333 "syncprov_sendinfo: invalid syncinfo type (%d)\n",
339 ret = ber_flatten2( ber, &rspdata, 0 );
342 Debug( LDAP_DEBUG_TRACE,
343 "syncprov_sendinfo: ber_flatten2 failed (%d)\n",
345 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
349 rs->sr_rspoid = LDAP_SYNC_INFO;
350 rs->sr_rspdata = &rspdata;
351 send_ldap_intermediate( op, rs );
352 rs->sr_rspdata = NULL;
358 /* Find a modtarget in an AVL tree */
360 sp_avl_cmp( const void *c1, const void *c2 )
362 const modtarget *m1, *m2;
366 rc = m1->mt_op->o_req_ndn.bv_len - m2->mt_op->o_req_ndn.bv_len;
369 return ber_bvcmp( &m1->mt_op->o_req_ndn, &m2->mt_op->o_req_ndn );
372 /* syncprov_findbase:
373 * finds the true DN of the base of a search (with alias dereferencing) and
374 * checks to make sure the base entry doesn't get replaced with a different
375 * entry (e.g., swapping trees via ModDN, or retargeting an alias). If a
376 * change is detected, any persistent search on this base must be terminated /
378 * On the first call, we just save the DN and entryID. On subsequent calls
379 * we compare the DN and entryID with the saved values.
382 findbase_cb( Operation *op, SlapReply *rs )
384 slap_callback *sc = op->o_callback;
386 if ( rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS ) {
387 fbase_cookie *fc = sc->sc_private;
389 /* If no entryID, we're looking for the first time.
390 * Just store whatever we got.
392 if ( fc->fss->s_eid == NOID ) {
394 fc->fss->s_eid = rs->sr_entry->e_id;
395 ber_dupbv( &fc->fss->s_base, &rs->sr_entry->e_nname );
397 } else if ( rs->sr_entry->e_id == fc->fss->s_eid &&
398 dn_match( &rs->sr_entry->e_nname, &fc->fss->s_base )) {
400 /* OK, the DN is the same and the entryID is the same. */
404 if ( rs->sr_err != LDAP_SUCCESS ) {
405 Debug( LDAP_DEBUG_ANY, "findbase failed! %d\n", rs->sr_err,0,0 );
410 static Filter generic_filter = { LDAP_FILTER_PRESENT, { 0 }, NULL };
411 static struct berval generic_filterstr = BER_BVC("(objectclass=*)");
414 syncprov_findbase( Operation *op, fbase_cookie *fc )
416 /* Use basic parameters from syncrepl search, but use
417 * current op's threadctx / tmpmemctx
419 ldap_pvt_thread_mutex_lock( &fc->fss->s_mutex );
420 if ( fc->fss->s_flags & PS_FIND_BASE ) {
421 slap_callback cb = {0};
423 SlapReply frs = { REP_RESULT };
426 fc->fss->s_flags ^= PS_FIND_BASE;
427 ldap_pvt_thread_mutex_unlock( &fc->fss->s_mutex );
429 fop = *fc->fss->s_op;
431 fop.o_bd = fop.o_bd->bd_self;
432 fop.o_hdr = op->o_hdr;
433 fop.o_time = op->o_time;
434 fop.o_tincr = op->o_tincr;
436 cb.sc_response = findbase_cb;
439 fop.o_sync_mode = 0; /* turn off sync mode */
440 fop.o_managedsait = SLAP_CONTROL_CRITICAL;
441 fop.o_callback = &cb;
442 LDAP_SLIST_INIT( &fop.o_extra );
443 fop.o_tag = LDAP_REQ_SEARCH;
444 fop.ors_scope = LDAP_SCOPE_BASE;
445 fop.ors_limit = NULL;
447 fop.ors_tlimit = SLAP_NO_LIMIT;
448 fop.ors_attrs = slap_anlist_no_attrs;
449 fop.ors_attrsonly = 1;
450 fop.ors_filter = &generic_filter;
451 fop.ors_filterstr = generic_filterstr;
453 rc = fop.o_bd->be_search( &fop, &frs );
455 ldap_pvt_thread_mutex_unlock( &fc->fss->s_mutex );
459 /* After the first call, see if the fdn resides in the scope */
460 if ( fc->fbase == 1 ) {
461 switch ( fc->fss->s_op->ors_scope ) {
462 case LDAP_SCOPE_BASE:
463 fc->fscope = dn_match( fc->fdn, &fc->fss->s_base );
465 case LDAP_SCOPE_ONELEVEL: {
467 dnParent( fc->fdn, &pdn );
468 fc->fscope = dn_match( &pdn, &fc->fss->s_base );
470 case LDAP_SCOPE_SUBTREE:
471 fc->fscope = dnIsSuffix( fc->fdn, &fc->fss->s_base );
473 case LDAP_SCOPE_SUBORDINATE:
474 fc->fscope = dnIsSuffix( fc->fdn, &fc->fss->s_base ) &&
475 !dn_match( fc->fdn, &fc->fss->s_base );
483 /* If entryID has changed, then the base of this search has
484 * changed. Invalidate the psearch.
486 return LDAP_NO_SUCH_OBJECT;
490 * This function has three different purposes, but they all use a search
491 * that filters on entryCSN so they're combined here.
492 * 1: at startup time, after a contextCSN has been read from the database,
493 * we search for all entries with CSN >= contextCSN in case the contextCSN
494 * was not checkpointed at the previous shutdown.
496 * 2: when the current contextCSN is known and we have a sync cookie, we search
497 * for one entry with CSN = the cookie CSN. If not found, try <= cookie CSN.
498 * If an entry is found, the cookie CSN is valid, otherwise it is stale.
500 * 3: during a refresh phase, we search for all entries with CSN <= the cookie
501 * CSN, and generate Present records for them. We always collect this result
502 * in SyncID sets, even if there's only one match.
504 typedef enum find_csn_t {
511 findmax_cb( Operation *op, SlapReply *rs )
513 if ( rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS ) {
514 struct berval *maxcsn = op->o_callback->sc_private;
515 Attribute *a = attr_find( rs->sr_entry->e_attrs,
516 slap_schema.si_ad_entryCSN );
518 if ( a && ber_bvcmp( &a->a_vals[0], maxcsn ) > 0 &&
519 slap_parse_csn_sid( &a->a_vals[0] ) == slap_serverID ) {
520 maxcsn->bv_len = a->a_vals[0].bv_len;
521 strcpy( maxcsn->bv_val, a->a_vals[0].bv_val );
528 findcsn_cb( Operation *op, SlapReply *rs )
530 slap_callback *sc = op->o_callback;
532 /* We just want to know that at least one exists, so it's OK if
533 * we exceed the unchecked limit.
535 if ( rs->sr_err == LDAP_ADMINLIMIT_EXCEEDED ||
536 (rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS )) {
537 sc->sc_private = (void *)1;
542 /* Build a list of entryUUIDs for sending in a SyncID set */
546 typedef struct fpres_cookie {
553 findpres_cb( Operation *op, SlapReply *rs )
555 slap_callback *sc = op->o_callback;
556 fpres_cookie *pc = sc->sc_private;
558 int ret = SLAP_CB_CONTINUE;
560 switch ( rs->sr_type ) {
562 a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_entryUUID );
564 pc->uuids[pc->num].bv_val = pc->last;
565 AC_MEMCPY( pc->uuids[pc->num].bv_val, a->a_nvals[0].bv_val,
566 pc->uuids[pc->num].bv_len );
568 pc->last = pc->uuids[pc->num].bv_val;
569 pc->uuids[pc->num].bv_val = NULL;
572 if ( pc->num != SLAP_SYNCUUID_SET_SIZE )
578 ret = syncprov_sendinfo( op, rs, LDAP_TAG_SYNC_ID_SET, NULL,
580 pc->uuids[pc->num].bv_val = pc->last;
582 pc->last = pc->uuids[0].bv_val;
592 syncprov_findcsn( Operation *op, find_csn_t mode, struct berval *csn )
594 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
595 syncprov_info_t *si = on->on_bi.bi_private;
597 slap_callback cb = {0};
599 SlapReply frs = { REP_RESULT };
600 char buf[LDAP_PVT_CSNSTR_BUFSIZE + STRLENOF("(entryCSN<=)")];
601 char cbuf[LDAP_PVT_CSNSTR_BUFSIZE];
602 struct berval maxcsn;
604 AttributeAssertion eq = ATTRIBUTEASSERTION_INIT;
605 fpres_cookie pcookie;
606 sync_control *srs = NULL;
607 struct slap_limits_set fc_limits;
608 int i, rc = LDAP_SUCCESS, findcsn_retry = 1;
611 if ( mode != FIND_MAXCSN ) {
612 srs = op->o_controls[slap_cids.sc_LDAPsync];
616 fop.o_sync_mode &= SLAP_CONTROL_MASK; /* turn off sync_mode */
617 /* We want pure entries, not referrals */
618 fop.o_managedsait = SLAP_CONTROL_CRITICAL;
621 cf.f_av_desc = slap_schema.si_ad_entryCSN;
622 BER_BVZERO( &cf.f_av_value );
625 fop.o_callback = &cb;
626 fop.ors_limit = NULL;
627 fop.ors_tlimit = SLAP_NO_LIMIT;
628 fop.ors_filter = &cf;
629 fop.ors_filterstr.bv_val = buf;
634 cf.f_choice = LDAP_FILTER_GE;
635 /* If there are multiple CSNs, use the one with our serverID */
636 for ( i=0; i<si->si_numcsns; i++) {
637 if ( slap_serverID == si->si_sids[i] ) {
642 if ( i == si->si_numcsns ) {
643 /* No match: this is multimaster, and none of the content in the DB
644 * originated locally. Treat like no CSN.
646 return LDAP_NO_SUCH_OBJECT;
648 cf.f_av_value = si->si_ctxcsn[maxid];
649 fop.ors_filterstr.bv_len = snprintf( buf, sizeof( buf ),
650 "(entryCSN>=%s)", cf.f_av_value.bv_val );
651 if ( fop.ors_filterstr.bv_len >= sizeof( buf ) ) {
654 fop.ors_attrsonly = 0;
655 fop.ors_attrs = csn_anlist;
656 fop.ors_slimit = SLAP_NO_LIMIT;
657 cb.sc_private = &maxcsn;
658 cb.sc_response = findmax_cb;
659 strcpy( cbuf, cf.f_av_value.bv_val );
660 maxcsn.bv_val = cbuf;
661 maxcsn.bv_len = cf.f_av_value.bv_len;
664 if ( BER_BVISEMPTY( &cf.f_av_value )) {
665 cf.f_av_value = *csn;
667 fop.o_dn = op->o_bd->be_rootdn;
668 fop.o_ndn = op->o_bd->be_rootndn;
669 fop.o_req_dn = op->o_bd->be_suffix[0];
670 fop.o_req_ndn = op->o_bd->be_nsuffix[0];
671 /* Look for exact match the first time */
672 if ( findcsn_retry ) {
673 cf.f_choice = LDAP_FILTER_EQUALITY;
674 fop.ors_filterstr.bv_len = snprintf( buf, sizeof( buf ),
675 "(entryCSN=%s)", cf.f_av_value.bv_val );
676 /* On retry, look for <= */
678 cf.f_choice = LDAP_FILTER_LE;
679 fop.ors_limit = &fc_limits;
680 memset( &fc_limits, 0, sizeof( fc_limits ));
681 fc_limits.lms_s_unchecked = 1;
682 fop.ors_filterstr.bv_len = snprintf( buf, sizeof( buf ),
683 "(entryCSN<=%s)", cf.f_av_value.bv_val );
685 if ( fop.ors_filterstr.bv_len >= sizeof( buf ) ) {
688 fop.ors_attrsonly = 1;
689 fop.ors_attrs = slap_anlist_no_attrs;
691 cb.sc_private = NULL;
692 cb.sc_response = findcsn_cb;
695 fop.ors_filter = op->ors_filter;
696 fop.ors_filterstr = op->ors_filterstr;
697 fop.ors_attrsonly = 0;
698 fop.ors_attrs = uuid_anlist;
699 fop.ors_slimit = SLAP_NO_LIMIT;
700 cb.sc_private = &pcookie;
701 cb.sc_response = findpres_cb;
704 /* preallocate storage for a full set */
705 pcookie.uuids = op->o_tmpalloc( (SLAP_SYNCUUID_SET_SIZE+1) *
706 sizeof(struct berval) + SLAP_SYNCUUID_SET_SIZE * UUID_LEN,
708 pcookie.last = (char *)(pcookie.uuids + SLAP_SYNCUUID_SET_SIZE+1);
709 pcookie.uuids[0].bv_val = pcookie.last;
710 pcookie.uuids[0].bv_len = UUID_LEN;
711 for (i=1; i<SLAP_SYNCUUID_SET_SIZE; i++) {
712 pcookie.uuids[i].bv_val = pcookie.uuids[i-1].bv_val + UUID_LEN;
713 pcookie.uuids[i].bv_len = UUID_LEN;
718 fop.o_bd->bd_info = (BackendInfo *)on->on_info;
719 fop.o_bd->be_search( &fop, &frs );
720 fop.o_bd->bd_info = (BackendInfo *)on;
724 if ( ber_bvcmp( &si->si_ctxcsn[maxid], &maxcsn )) {
726 Syntax *syn = slap_schema.si_ad_contextCSN->ad_type->sat_syntax;
727 assert( !syn->ssyn_validate( syn, &maxcsn ));
729 ber_bvreplace( &si->si_ctxcsn[maxid], &maxcsn );
730 si->si_numops++; /* ensure a checkpoint */
734 /* If matching CSN was not found, invalidate the context. */
735 if ( !cb.sc_private ) {
736 /* If we didn't find an exact match, then try for <= */
737 if ( findcsn_retry ) {
739 rs_reinit( &frs, REP_RESULT );
742 rc = LDAP_NO_SUCH_OBJECT;
746 op->o_tmpfree( pcookie.uuids, op->o_tmpmemctx );
753 /* Should find a place to cache these */
754 static mutexint *get_mutexint()
756 mutexint *mi = ch_malloc( sizeof( mutexint ));
757 ldap_pvt_thread_mutex_init( &mi->mi_mutex );
762 static void inc_mutexint( mutexint *mi )
764 ldap_pvt_thread_mutex_lock( &mi->mi_mutex );
766 ldap_pvt_thread_mutex_unlock( &mi->mi_mutex );
769 /* return resulting counter */
770 static int dec_mutexint( mutexint *mi )
773 ldap_pvt_thread_mutex_lock( &mi->mi_mutex );
775 ldap_pvt_thread_mutex_unlock( &mi->mi_mutex );
777 ldap_pvt_thread_mutex_destroy( &mi->mi_mutex );
784 syncprov_free_syncop( syncops *so )
786 syncres *sr, *srnext;
787 GroupAssertion *ga, *gnext;
789 ldap_pvt_thread_mutex_lock( &so->s_mutex );
790 /* already being freed, or still in use */
791 if ( !so->s_inuse || --so->s_inuse > 0 ) {
792 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
795 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
796 if ( so->s_flags & PS_IS_DETACHED ) {
797 filter_free( so->s_op->ors_filter );
798 for ( ga = so->s_op->o_groups; ga; ga=gnext ) {
804 ch_free( so->s_base.bv_val );
805 for ( sr=so->s_res; sr; sr=srnext ) {
808 if ( !dec_mutexint( sr->s_e->e_private )) {
809 sr->s_e->e_private = NULL;
810 entry_free( sr->s_e );
815 ldap_pvt_thread_mutex_destroy( &so->s_mutex );
819 /* Send a persistent search response */
821 syncprov_sendresp( Operation *op, opcookie *opc, syncops *so, int mode )
823 SlapReply rs = { REP_SEARCH };
824 LDAPControl *ctrls[2];
825 struct berval cookie, csns[2];
827 Attribute a_uuid = {0};
829 if ( so->s_op->o_abandon )
830 return SLAPD_ABANDON;
833 csns[0] = opc->sctxcsn;
834 BER_BVZERO( &csns[1] );
835 slap_compose_sync_cookie( op, &cookie, csns, so->s_rid, slap_serverID ? slap_serverID : -1 );
838 if ( so->s_sid > 0 ) {
839 Debug( LDAP_DEBUG_SYNC, "syncprov_sendresp: to=%03x, cookie=%s\n",
840 so->s_sid, cookie.bv_val, 0 );
842 Debug( LDAP_DEBUG_SYNC, "syncprov_sendresp: cookie=%s\n",
843 cookie.bv_val, 0, 0 );
847 e_uuid.e_attrs = &a_uuid;
848 a_uuid.a_desc = slap_schema.si_ad_entryUUID;
849 a_uuid.a_nvals = &opc->suuid;
850 rs.sr_err = syncprov_state_ctrl( op, &rs, &e_uuid,
851 mode, ctrls, 0, 1, &cookie );
852 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
855 rs.sr_entry = &e_uuid;
856 if ( mode == LDAP_SYNC_ADD || mode == LDAP_SYNC_MODIFY ) {
858 e_uuid.e_private = NULL;
863 if ( opc->sreference && so->s_op->o_managedsait <= SLAP_CONTROL_IGNORED ) {
864 rs.sr_ref = get_entry_referrals( op, rs.sr_entry );
865 rs.sr_err = send_search_reference( op, &rs );
866 ber_bvarray_free( rs.sr_ref );
870 case LDAP_SYNC_MODIFY:
871 rs.sr_attrs = op->ors_attrs;
872 rs.sr_err = send_search_entry( op, &rs );
874 case LDAP_SYNC_DELETE:
875 e_uuid.e_attrs = NULL;
876 e_uuid.e_name = opc->sdn;
877 e_uuid.e_nname = opc->sndn;
878 if ( opc->sreference && so->s_op->o_managedsait <= SLAP_CONTROL_IGNORED ) {
879 struct berval bv = BER_BVNULL;
881 rs.sr_err = send_search_reference( op, &rs );
883 rs.sr_err = send_search_entry( op, &rs );
889 /* In case someone else freed it already? */
892 for ( i=0; rs.sr_ctrls[i]; i++ ) {
893 if ( rs.sr_ctrls[i] == ctrls[0] ) {
894 op->o_tmpfree( ctrls[0]->ldctl_value.bv_val, op->o_tmpmemctx );
895 ctrls[0]->ldctl_value.bv_val = NULL;
906 syncprov_qstart( syncops *so );
908 /* Play back queued responses */
910 syncprov_qplay( Operation *op, syncops *so )
912 slap_overinst *on = LDAP_SLIST_FIRST(&so->s_op->o_extra)->oe_key;
920 ldap_pvt_thread_mutex_lock( &so->s_mutex );
921 /* Exit loop with mutex held */
922 if ( so->s_op->o_abandon )
925 /* Exit loop with mutex held */
928 so->s_res = sr->s_next;
930 so->s_restail = NULL;
931 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
933 if ( sr->s_mode == LDAP_SYNC_NEW_COOKIE ) {
934 SlapReply rs = { REP_INTERMEDIATE };
936 rc = syncprov_sendinfo( op, &rs, LDAP_TAG_SYNC_NEW_COOKIE,
937 &sr->s_csn, 0, NULL, 0 );
940 opc.sndn = sr->s_ndn;
941 opc.suuid = sr->s_uuid;
942 opc.sctxcsn = sr->s_csn;
943 opc.sreference = sr->s_isreference;
946 rc = syncprov_sendresp( op, &opc, so, sr->s_mode );
950 if ( !dec_mutexint( sr->s_e->e_private )) {
951 sr->s_e->e_private = NULL;
952 entry_free ( sr->s_e );
958 /* Exit loop with mutex held */
959 ldap_pvt_thread_mutex_lock( &so->s_mutex );
963 /* We now only send one change at a time, to prevent one
964 * psearch from hogging all the CPU. Resubmit this task if
965 * there are more responses queued and no errors occurred.
968 if ( rc == 0 && so->s_res ) {
969 syncprov_qstart( so );
971 so->s_flags ^= PS_TASK_QUEUED;
974 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
978 /* task for playing back queued responses */
980 syncprov_qtask( void *ctx, void *arg )
983 OperationBuffer opbuf;
990 op->o_hdr = &opbuf.ob_hdr;
991 op->o_controls = opbuf.ob_controls;
992 memset( op->o_controls, 0, sizeof(opbuf.ob_controls) );
993 op->o_sync = SLAP_CONTROL_IGNORED;
995 *op->o_hdr = *so->s_op->o_hdr;
997 op->o_tmpmemctx = slap_sl_mem_create(SLAP_SLAB_SIZE, SLAP_SLAB_STACK, ctx, 1);
998 op->o_tmpmfuncs = &slap_sl_mfuncs;
999 op->o_threadctx = ctx;
1001 /* syncprov_qplay expects a fake db */
1002 be = *so->s_op->o_bd;
1003 be.be_flags |= SLAP_DBFLAG_OVERLAY;
1005 LDAP_SLIST_FIRST(&op->o_extra) = NULL;
1006 op->o_callback = NULL;
1008 rc = syncprov_qplay( op, so );
1010 /* decrement use count... */
1011 syncprov_free_syncop( so );
1016 /* Start the task to play back queued psearch responses */
1018 syncprov_qstart( syncops *so )
1020 so->s_flags |= PS_TASK_QUEUED;
1022 ldap_pvt_thread_pool_submit( &connection_pool,
1023 syncprov_qtask, so );
1026 /* Queue a persistent search response */
1028 syncprov_qresp( opcookie *opc, syncops *so, int mode )
1032 struct berval cookie = opc->sctxcsn;
1034 if ( mode == LDAP_SYNC_NEW_COOKIE ) {
1035 syncprov_info_t *si = opc->son->on_bi.bi_private;
1037 slap_compose_sync_cookie( NULL, &cookie, si->si_ctxcsn,
1038 so->s_rid, slap_serverID ? slap_serverID : -1);
1041 srsize = sizeof(syncres) + opc->suuid.bv_len + 1 +
1042 opc->sdn.bv_len + 1 + opc->sndn.bv_len + 1;
1043 if ( cookie.bv_len )
1044 srsize += cookie.bv_len + 1;
1045 sr = ch_malloc( srsize );
1048 /* bump refcount on this entry */
1050 inc_mutexint( opc->se->e_private );
1051 sr->s_dn.bv_val = (char *)(sr + 1);
1052 sr->s_dn.bv_len = opc->sdn.bv_len;
1054 sr->s_isreference = opc->sreference;
1055 sr->s_ndn.bv_val = lutil_strcopy( sr->s_dn.bv_val,
1056 opc->sdn.bv_val ) + 1;
1057 sr->s_ndn.bv_len = opc->sndn.bv_len;
1058 sr->s_uuid.bv_val = lutil_strcopy( sr->s_ndn.bv_val,
1059 opc->sndn.bv_val ) + 1;
1060 sr->s_uuid.bv_len = opc->suuid.bv_len;
1061 AC_MEMCPY( sr->s_uuid.bv_val, opc->suuid.bv_val, opc->suuid.bv_len );
1062 if ( cookie.bv_len ) {
1063 sr->s_csn.bv_val = sr->s_uuid.bv_val + sr->s_uuid.bv_len + 1;
1064 strcpy( sr->s_csn.bv_val, cookie.bv_val );
1066 sr->s_csn.bv_val = NULL;
1068 sr->s_csn.bv_len = cookie.bv_len;
1070 if ( mode == LDAP_SYNC_NEW_COOKIE && cookie.bv_val ) {
1071 ch_free( cookie.bv_val );
1074 ldap_pvt_thread_mutex_lock( &so->s_mutex );
1078 so->s_restail->s_next = sr;
1082 /* If the base of the psearch was modified, check it next time round */
1083 if ( so->s_flags & PS_WROTE_BASE ) {
1084 so->s_flags ^= PS_WROTE_BASE;
1085 so->s_flags |= PS_FIND_BASE;
1087 if (( so->s_flags & (PS_IS_DETACHED|PS_TASK_QUEUED)) == PS_IS_DETACHED ) {
1088 syncprov_qstart( so );
1090 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
1091 return LDAP_SUCCESS;
1095 syncprov_drop_psearch( syncops *so, int lock )
1097 if ( so->s_flags & PS_IS_DETACHED ) {
1099 ldap_pvt_thread_mutex_lock( &so->s_op->o_conn->c_mutex );
1100 so->s_op->o_conn->c_n_ops_executing--;
1101 so->s_op->o_conn->c_n_ops_completed++;
1102 LDAP_STAILQ_REMOVE( &so->s_op->o_conn->c_ops, so->s_op, Operation,
1105 ldap_pvt_thread_mutex_unlock( &so->s_op->o_conn->c_mutex );
1107 syncprov_free_syncop( so );
1113 syncprov_ab_cleanup( Operation *op, SlapReply *rs )
1115 slap_callback *sc = op->o_callback;
1116 op->o_callback = sc->sc_next;
1117 syncprov_drop_psearch( op->o_callback->sc_private, 0 );
1118 op->o_tmpfree( sc, op->o_tmpmemctx );
1123 syncprov_op_abandon( Operation *op, SlapReply *rs )
1125 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1126 syncprov_info_t *si = on->on_bi.bi_private;
1127 syncops *so, *soprev;
1129 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1130 for ( so=si->si_ops, soprev = (syncops *)&si->si_ops; so;
1131 soprev=so, so=so->s_next ) {
1132 if ( so->s_op->o_connid == op->o_connid &&
1133 so->s_op->o_msgid == op->orn_msgid ) {
1134 so->s_op->o_abandon = 1;
1135 soprev->s_next = so->s_next;
1139 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1141 /* Is this really a Cancel exop? */
1142 if ( op->o_tag != LDAP_REQ_ABANDON ) {
1143 so->s_op->o_cancel = SLAP_CANCEL_ACK;
1144 rs->sr_err = LDAP_CANCELLED;
1145 send_ldap_result( so->s_op, rs );
1146 if ( so->s_flags & PS_IS_DETACHED ) {
1148 cb = op->o_tmpcalloc( 1, sizeof(slap_callback), op->o_tmpmemctx );
1149 cb->sc_cleanup = syncprov_ab_cleanup;
1150 cb->sc_next = op->o_callback;
1151 cb->sc_private = so;
1152 return SLAP_CB_CONTINUE;
1155 syncprov_drop_psearch( so, 0 );
1157 return SLAP_CB_CONTINUE;
1160 /* Find which persistent searches are affected by this operation */
1162 syncprov_matchops( Operation *op, opcookie *opc, int saveit )
1164 slap_overinst *on = opc->son;
1165 syncprov_info_t *si = on->on_bi.bi_private;
1168 syncops *ss, *sprev, *snext;
1172 struct berval newdn;
1174 BackendDB *b0 = op->o_bd, db;
1176 fc.fdn = &op->o_req_ndn;
1177 /* compute new DN */
1178 if ( op->o_tag == LDAP_REQ_MODRDN && !saveit ) {
1180 if ( op->orr_nnewSup ) pdn = *op->orr_nnewSup;
1181 else dnParent( fc.fdn, &pdn );
1182 build_new_dn( &newdn, &pdn, &op->orr_nnewrdn, op->o_tmpmemctx );
1186 if ( op->o_tag != LDAP_REQ_ADD ) {
1187 if ( !SLAP_ISOVERLAY( op->o_bd )) {
1191 rc = overlay_entry_get_ov( op, fc.fdn, NULL, NULL, 0, &e, on );
1192 /* If we're sending responses now, make a copy and unlock the DB */
1193 if ( e && !saveit ) {
1195 opc->se = entry_dup( e );
1196 opc->se->e_private = get_mutexint();
1198 overlay_entry_release_ov( op, e, 0, on );
1209 opc->se = entry_dup( e );
1210 opc->se->e_private = get_mutexint();
1216 if ( saveit || op->o_tag == LDAP_REQ_ADD ) {
1217 ber_dupbv_x( &opc->sdn, &e->e_name, op->o_tmpmemctx );
1218 ber_dupbv_x( &opc->sndn, &e->e_nname, op->o_tmpmemctx );
1219 opc->sreference = is_entry_referral( e );
1220 a = attr_find( e->e_attrs, slap_schema.si_ad_entryUUID );
1222 ber_dupbv_x( &opc->suuid, &a->a_nvals[0], op->o_tmpmemctx );
1223 } else if ( op->o_tag == LDAP_REQ_MODRDN && !saveit ) {
1224 op->o_tmpfree( opc->sndn.bv_val, op->o_tmpmemctx );
1225 op->o_tmpfree( opc->sdn.bv_val, op->o_tmpmemctx );
1226 ber_dupbv_x( &opc->sdn, &e->e_name, op->o_tmpmemctx );
1227 ber_dupbv_x( &opc->sndn, &e->e_nname, op->o_tmpmemctx );
1230 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1231 for (ss = si->si_ops, sprev = (syncops *)&si->si_ops; ss;
1232 sprev = ss, ss=snext)
1240 if ( ss->s_op->o_abandon )
1243 /* Don't send ops back to the originator */
1244 if ( opc->osid > 0 && opc->osid == ss->s_sid ) {
1245 Debug( LDAP_DEBUG_SYNC, "syncprov_matchops: skipping original sid %03x\n",
1250 /* Don't send ops back to the messenger */
1251 if ( opc->rsid > 0 && opc->rsid == ss->s_sid ) {
1252 Debug( LDAP_DEBUG_SYNC, "syncprov_matchops: skipping relayed sid %03x\n",
1262 /* If the base of the search is missing, signal a refresh */
1263 rc = syncprov_findbase( op, &fc );
1264 if ( rc != LDAP_SUCCESS ) {
1265 SlapReply rs = {REP_RESULT};
1266 send_ldap_error( ss->s_op, &rs, LDAP_SYNC_REFRESH_REQUIRED,
1267 "search base has changed" );
1268 sprev->s_next = snext;
1269 syncprov_drop_psearch( ss, 1 );
1274 /* If we're sending results now, look for this op in old matches */
1278 /* Did we modify the search base? */
1279 if ( dn_match( &op->o_req_ndn, &ss->s_base )) {
1280 ldap_pvt_thread_mutex_lock( &ss->s_mutex );
1281 ss->s_flags |= PS_WROTE_BASE;
1282 ldap_pvt_thread_mutex_unlock( &ss->s_mutex );
1285 for ( sm=opc->smatches, old=(syncmatches *)&opc->smatches; sm;
1286 old=sm, sm=sm->sm_next ) {
1287 if ( sm->sm_op == ss ) {
1289 old->sm_next = sm->sm_next;
1290 op->o_tmpfree( sm, op->o_tmpmemctx );
1297 ldap_pvt_thread_mutex_lock( &ss->s_mutex );
1300 oh.oh_conn = ss->s_op->o_conn;
1301 oh.oh_connid = ss->s_op->o_connid;
1302 op2.o_bd = op->o_bd->bd_self;
1304 op2.o_extra = op->o_extra;
1305 op2.o_callback = NULL;
1306 if (ss->s_flags & PS_FIX_FILTER) {
1307 /* Skip the AND/GE clause that we stuck on in front. We
1308 would lose deletes/mods that happen during the refresh
1309 phase otherwise (ITS#6555) */
1310 op2.ors_filter = ss->s_op->ors_filter->f_and->f_next;
1312 ldap_pvt_thread_mutex_unlock( &ss->s_mutex );
1313 rc = test_filter( &op2, e, op2.ors_filter );
1316 Debug( LDAP_DEBUG_TRACE, "syncprov_matchops: sid %03x fscope %d rc %d\n",
1317 ss->s_sid, fc.fscope, rc );
1319 /* check if current o_req_dn is in scope and matches filter */
1320 if ( fc.fscope && rc == LDAP_COMPARE_TRUE ) {
1322 sm = op->o_tmpalloc( sizeof(syncmatches), op->o_tmpmemctx );
1323 sm->sm_next = opc->smatches;
1325 ldap_pvt_thread_mutex_lock( &ss->s_mutex );
1327 ldap_pvt_thread_mutex_unlock( &ss->s_mutex );
1330 /* if found send UPDATE else send ADD */
1331 syncprov_qresp( opc, ss,
1332 found ? LDAP_SYNC_MODIFY : LDAP_SYNC_ADD );
1334 } else if ( !saveit && found ) {
1336 syncprov_qresp( opc, ss, LDAP_SYNC_DELETE );
1337 } else if ( !saveit ) {
1338 syncprov_qresp( opc, ss, LDAP_SYNC_NEW_COOKIE );
1340 if ( !saveit && found ) {
1341 /* Decrement s_inuse, was incremented when called
1342 * with saveit == TRUE
1344 syncprov_free_syncop( ss );
1347 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1349 if ( op->o_tag != LDAP_REQ_ADD && e ) {
1350 if ( !SLAP_ISOVERLAY( op->o_bd )) {
1354 overlay_entry_release_ov( op, e, 0, on );
1357 if ( opc->se && !saveit ) {
1358 if ( !dec_mutexint( opc->se->e_private )) {
1359 opc->se->e_private = NULL;
1360 entry_free( opc->se );
1365 op->o_tmpfree( fc.fdn->bv_val, op->o_tmpmemctx );
1371 syncprov_op_cleanup( Operation *op, SlapReply *rs )
1373 slap_callback *cb = op->o_callback;
1374 opcookie *opc = cb->sc_private;
1375 slap_overinst *on = opc->son;
1376 syncprov_info_t *si = on->on_bi.bi_private;
1377 syncmatches *sm, *snext;
1380 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1381 if ( si->si_active )
1383 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1385 for (sm = opc->smatches; sm; sm=snext) {
1386 snext = sm->sm_next;
1387 syncprov_free_syncop( sm->sm_op );
1388 op->o_tmpfree( sm, op->o_tmpmemctx );
1391 /* Remove op from lock table */
1394 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
1395 mt->mt_mods = mt->mt_mods->mi_next;
1396 /* If there are more, promote the next one */
1397 if ( mt->mt_mods ) {
1398 mt->mt_op = mt->mt_mods->mi_op;
1399 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1401 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1402 ldap_pvt_thread_mutex_lock( &si->si_mods_mutex );
1403 avl_delete( &si->si_mods, mt, sp_avl_cmp );
1404 ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
1405 ldap_pvt_thread_mutex_destroy( &mt->mt_mutex );
1409 if ( !BER_BVISNULL( &opc->suuid ))
1410 op->o_tmpfree( opc->suuid.bv_val, op->o_tmpmemctx );
1411 if ( !BER_BVISNULL( &opc->sndn ))
1412 op->o_tmpfree( opc->sndn.bv_val, op->o_tmpmemctx );
1413 if ( !BER_BVISNULL( &opc->sdn ))
1414 op->o_tmpfree( opc->sdn.bv_val, op->o_tmpmemctx );
1415 op->o_callback = cb->sc_next;
1416 op->o_tmpfree(cb, op->o_tmpmemctx);
1422 syncprov_checkpoint( Operation *op, slap_overinst *on )
1424 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
1427 SlapReply rsm = {REP_RESULT};
1428 slap_callback cb = {0};
1433 Syntax *syn = slap_schema.si_ad_contextCSN->ad_type->sat_syntax;
1436 for ( i=0; i<si->si_numcsns; i++ ) {
1437 assert( !syn->ssyn_validate( syn, si->si_ctxcsn+i ));
1440 mod.sml_numvals = si->si_numcsns;
1441 mod.sml_values = si->si_ctxcsn;
1442 mod.sml_nvalues = NULL;
1443 mod.sml_desc = slap_schema.si_ad_contextCSN;
1444 mod.sml_op = LDAP_MOD_REPLACE;
1445 mod.sml_flags = SLAP_MOD_INTERNAL;
1446 mod.sml_next = NULL;
1448 cb.sc_response = slap_null_cb;
1450 opm.o_tag = LDAP_REQ_MODIFY;
1451 opm.o_callback = &cb;
1452 opm.orm_modlist = &mod;
1453 opm.orm_no_opattrs = 1;
1454 if ( SLAP_GLUE_SUBORDINATE( op->o_bd )) {
1455 be = *on->on_info->oi_origdb;
1458 opm.o_req_dn = si->si_contextdn;
1459 opm.o_req_ndn = si->si_contextdn;
1460 bi = opm.o_bd->bd_info;
1461 opm.o_bd->bd_info = on->on_info->oi_orig;
1462 opm.o_managedsait = SLAP_CONTROL_NONCRITICAL;
1463 opm.o_no_schema_check = 1;
1464 opm.o_bd->be_modify( &opm, &rsm );
1466 if ( rsm.sr_err == LDAP_NO_SUCH_OBJECT &&
1467 SLAP_SYNC_SUBENTRY( opm.o_bd )) {
1469 char txtbuf[SLAP_TEXT_BUFLEN];
1470 size_t textlen = sizeof txtbuf;
1471 Entry *e = slap_create_context_csn_entry( opm.o_bd, NULL );
1472 rs_reinit( &rsm, REP_RESULT );
1473 slap_mods2entry( &mod, &e, 0, 1, &text, txtbuf, textlen);
1475 opm.o_bd->be_add( &opm, &rsm );
1476 if ( e == opm.ora_e )
1477 be_entry_release_w( &opm, opm.ora_e );
1479 opm.o_bd->bd_info = bi;
1481 if ( mod.sml_next != NULL ) {
1482 slap_mods_free( mod.sml_next, 1 );
1485 for ( i=0; i<si->si_numcsns; i++ ) {
1486 assert( !syn->ssyn_validate( syn, si->si_ctxcsn+i ));
1492 syncprov_add_slog( Operation *op )
1494 opcookie *opc = op->o_callback->sc_private;
1495 slap_overinst *on = opc->son;
1496 syncprov_info_t *si = on->on_bi.bi_private;
1502 if ( BER_BVISEMPTY( &op->o_csn ) ) {
1503 /* During the syncrepl refresh phase we can receive operations
1504 * without a csn. We cannot reliably determine the consumers
1505 * state with respect to such operations, so we ignore them and
1506 * wipe out anything in the log if we see them.
1508 ldap_pvt_thread_mutex_lock( &sl->sl_mutex );
1509 while ( se = sl->sl_head ) {
1510 sl->sl_head = se->se_next;
1515 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1519 /* Allocate a record. UUIDs are not NUL-terminated. */
1520 se = ch_malloc( sizeof( slog_entry ) + opc->suuid.bv_len +
1521 op->o_csn.bv_len + 1 );
1523 se->se_tag = op->o_tag;
1525 se->se_uuid.bv_val = (char *)(&se[1]);
1526 AC_MEMCPY( se->se_uuid.bv_val, opc->suuid.bv_val, opc->suuid.bv_len );
1527 se->se_uuid.bv_len = opc->suuid.bv_len;
1529 se->se_csn.bv_val = se->se_uuid.bv_val + opc->suuid.bv_len;
1530 AC_MEMCPY( se->se_csn.bv_val, op->o_csn.bv_val, op->o_csn.bv_len );
1531 se->se_csn.bv_val[op->o_csn.bv_len] = '\0';
1532 se->se_csn.bv_len = op->o_csn.bv_len;
1533 se->se_sid = slap_parse_csn_sid( &se->se_csn );
1535 ldap_pvt_thread_mutex_lock( &sl->sl_mutex );
1536 if ( sl->sl_head ) {
1537 /* Keep the list in csn order. */
1538 if ( ber_bvcmp( &sl->sl_tail->se_csn, &se->se_csn ) <= 0 ) {
1539 sl->sl_tail->se_next = se;
1544 for ( sep = &sl->sl_head; *sep; sep = &(*sep)->se_next ) {
1545 if ( ber_bvcmp( &se->se_csn, &(*sep)->se_csn ) < 0 ) {
1555 if ( !sl->sl_mincsn ) {
1557 sl->sl_mincsn = ch_malloc( 2*sizeof( struct berval ));
1558 sl->sl_sids = ch_malloc( sizeof( int ));
1559 sl->sl_sids[0] = se->se_sid;
1560 ber_dupbv( sl->sl_mincsn, &se->se_csn );
1561 BER_BVZERO( &sl->sl_mincsn[1] );
1565 while ( sl->sl_num > sl->sl_size ) {
1568 sl->sl_head = se->se_next;
1569 for ( i=0; i<sl->sl_numcsns; i++ )
1570 if ( sl->sl_sids[i] >= se->se_sid )
1572 if ( i == sl->sl_numcsns || sl->sl_sids[i] != se->se_sid ) {
1573 slap_insert_csn_sids( (struct sync_cookie *)sl,
1574 i, se->se_sid, &se->se_csn );
1576 ber_bvreplace( &sl->sl_mincsn[i], &se->se_csn );
1581 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1585 /* Just set a flag if we found the matching entry */
1587 playlog_cb( Operation *op, SlapReply *rs )
1589 if ( rs->sr_type == REP_SEARCH ) {
1590 op->o_callback->sc_private = (void *)1;
1595 /* enter with sl->sl_mutex locked, release before returning */
1597 syncprov_playlog( Operation *op, SlapReply *rs, sessionlog *sl,
1598 sync_control *srs, BerVarray ctxcsn, int numcsns, int *sids )
1600 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1602 int i, j, ndel, num, nmods, mmods;
1603 char cbuf[LDAP_PVT_CSNSTR_BUFSIZE];
1605 struct berval delcsn[2];
1607 if ( !sl->sl_num ) {
1608 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1616 uuids = op->o_tmpalloc( (num+1) * sizeof( struct berval ) +
1617 num * UUID_LEN, op->o_tmpmemctx );
1618 uuids[0].bv_val = (char *)(uuids + num + 1);
1620 delcsn[0].bv_len = 0;
1621 delcsn[0].bv_val = cbuf;
1622 BER_BVZERO(&delcsn[1]);
1624 /* Make a copy of the relevant UUIDs. Put the Deletes up front
1625 * and everything else at the end. Do this first so we can
1626 * unlock the list mutex.
1628 Debug( LDAP_DEBUG_SYNC, "srs csn %s\n",
1629 srs->sr_state.ctxcsn[0].bv_val, 0, 0 );
1630 for ( se=sl->sl_head; se; se=se->se_next ) {
1632 Debug( LDAP_DEBUG_SYNC, "log csn %s\n", se->se_csn.bv_val, 0, 0 );
1634 for ( k=0; k<srs->sr_state.numcsns; k++ ) {
1635 if ( se->se_sid == srs->sr_state.sids[k] ) {
1636 ndel = ber_bvcmp( &se->se_csn, &srs->sr_state.ctxcsn[k] );
1641 Debug( LDAP_DEBUG_SYNC, "cmp %d, too old\n", ndel, 0, 0 );
1645 for ( k=0; k<numcsns; k++ ) {
1646 if ( se->se_sid == sids[k] ) {
1647 ndel = ber_bvcmp( &se->se_csn, &ctxcsn[k] );
1652 Debug( LDAP_DEBUG_SYNC, "cmp %d, too new\n", ndel, 0, 0 );
1655 if ( se->se_tag == LDAP_REQ_DELETE ) {
1658 AC_MEMCPY( cbuf, se->se_csn.bv_val, se->se_csn.bv_len );
1659 delcsn[0].bv_len = se->se_csn.bv_len;
1660 delcsn[0].bv_val[delcsn[0].bv_len] = '\0';
1662 if ( se->se_tag == LDAP_REQ_ADD )
1667 uuids[j].bv_val = uuids[0].bv_val + (j * UUID_LEN);
1668 AC_MEMCPY(uuids[j].bv_val, se->se_uuid.bv_val, UUID_LEN);
1669 uuids[j].bv_len = UUID_LEN;
1671 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1675 /* Zero out unused slots */
1676 for ( i=ndel; i < num - nmods; i++ )
1677 uuids[i].bv_len = 0;
1679 /* Mods must be validated to see if they belong in this delete set.
1683 /* Strip any duplicates */
1684 for ( i=0; i<nmods; i++ ) {
1685 for ( j=0; j<ndel; j++ ) {
1686 if ( bvmatch( &uuids[j], &uuids[num - 1 - i] )) {
1687 uuids[num - 1 - i].bv_len = 0;
1692 if ( uuids[num - 1 - i].bv_len == 0 ) continue;
1693 for ( j=0; j<i; j++ ) {
1694 if ( bvmatch( &uuids[num - 1 - j], &uuids[num - 1 - i] )) {
1695 uuids[num - 1 - i].bv_len = 0;
1706 AttributeAssertion eq = ATTRIBUTEASSERTION_INIT;
1707 slap_callback cb = {0};
1711 fop.o_sync_mode = 0;
1712 fop.o_callback = &cb;
1713 fop.ors_limit = NULL;
1714 fop.ors_tlimit = SLAP_NO_LIMIT;
1715 fop.ors_attrs = slap_anlist_all_attributes;
1716 fop.ors_attrsonly = 0;
1717 fop.o_managedsait = SLAP_CONTROL_CRITICAL;
1719 af.f_choice = LDAP_FILTER_AND;
1722 mf.f_choice = LDAP_FILTER_EQUALITY;
1724 mf.f_av_desc = slap_schema.si_ad_entryUUID;
1725 mf.f_next = fop.ors_filter;
1727 fop.ors_filter = ⁡
1729 cb.sc_response = playlog_cb;
1730 fop.o_bd->bd_info = (BackendInfo *)on->on_info;
1732 for ( i=ndel; i<num; i++ ) {
1733 if ( uuids[i].bv_len != 0 ) {
1734 SlapReply frs = { REP_RESULT };
1736 mf.f_av_value = uuids[i];
1737 cb.sc_private = NULL;
1739 rc = fop.o_bd->be_search( &fop, &frs );
1741 /* If entry was not found, add to delete list */
1742 if ( !cb.sc_private ) {
1743 uuids[ndel++] = uuids[i];
1747 fop.o_bd->bd_info = (BackendInfo *)on;
1750 struct berval cookie;
1752 if ( delcsn[0].bv_len ) {
1753 slap_compose_sync_cookie( op, &cookie, delcsn, srs->sr_state.rid,
1754 slap_serverID ? slap_serverID : -1 );
1756 Debug( LDAP_DEBUG_SYNC, "syncprov_playlog: cookie=%s\n", cookie.bv_val, 0, 0 );
1759 uuids[ndel].bv_val = NULL;
1760 syncprov_sendinfo( op, rs, LDAP_TAG_SYNC_ID_SET,
1761 delcsn[0].bv_len ? &cookie : NULL, 0, uuids, 1 );
1762 if ( delcsn[0].bv_len ) {
1763 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
1766 op->o_tmpfree( uuids, op->o_tmpmemctx );
1770 syncprov_op_response( Operation *op, SlapReply *rs )
1772 opcookie *opc = op->o_callback->sc_private;
1773 slap_overinst *on = opc->son;
1774 syncprov_info_t *si = on->on_bi.bi_private;
1777 if ( rs->sr_err == LDAP_SUCCESS )
1779 struct berval maxcsn;
1780 char cbuf[LDAP_PVT_CSNSTR_BUFSIZE];
1781 int do_check = 0, have_psearches, foundit, csn_changed = 0;
1783 ldap_pvt_thread_mutex_lock( &si->si_resp_mutex );
1785 /* Update our context CSN */
1787 maxcsn.bv_val = cbuf;
1788 maxcsn.bv_len = sizeof(cbuf);
1789 ldap_pvt_thread_rdwr_wlock( &si->si_csn_rwlock );
1791 slap_get_commit_csn( op, &maxcsn, &foundit );
1792 if ( BER_BVISEMPTY( &maxcsn ) && SLAP_GLUE_SUBORDINATE( op->o_bd )) {
1793 /* syncrepl queues the CSN values in the db where
1794 * it is configured , not where the changes are made.
1795 * So look for a value in the glue db if we didn't
1796 * find any in this db.
1798 BackendDB *be = op->o_bd;
1799 op->o_bd = select_backend( &be->be_nsuffix[0], 1);
1800 maxcsn.bv_val = cbuf;
1801 maxcsn.bv_len = sizeof(cbuf);
1802 slap_get_commit_csn( op, &maxcsn, &foundit );
1805 if ( !BER_BVISEMPTY( &maxcsn ) ) {
1808 Syntax *syn = slap_schema.si_ad_contextCSN->ad_type->sat_syntax;
1809 assert( !syn->ssyn_validate( syn, &maxcsn ));
1811 sid = slap_parse_csn_sid( &maxcsn );
1812 for ( i=0; i<si->si_numcsns; i++ ) {
1813 if ( sid < si->si_sids[i] )
1815 if ( sid == si->si_sids[i] ) {
1816 if ( ber_bvcmp( &maxcsn, &si->si_ctxcsn[i] ) > 0 ) {
1817 ber_bvreplace( &si->si_ctxcsn[i], &maxcsn );
1823 /* It's a new SID for us */
1824 if ( i == si->si_numcsns || sid != si->si_sids[i] ) {
1825 slap_insert_csn_sids((struct sync_cookie *)&(si->si_ctxcsn),
1831 /* Don't do any processing for consumer contextCSN updates */
1832 if ( op->o_dont_replicate ) {
1833 if ( op->o_tag == LDAP_REQ_MODIFY &&
1834 op->orm_modlist->sml_op == LDAP_MOD_REPLACE &&
1835 op->orm_modlist->sml_desc == slap_schema.si_ad_contextCSN ) {
1836 /* Catch contextCSN updates from syncrepl. We have to look at
1837 * all the attribute values, as there may be more than one csn
1838 * that changed, and only one can be passed in the csn queue.
1840 Modifications *mod = op->orm_modlist;
1844 for ( i=0; i<mod->sml_numvals; i++ ) {
1845 sid = slap_parse_csn_sid( &mod->sml_values[i] );
1846 for ( j=0; j<si->si_numcsns; j++ ) {
1847 if ( sid < si->si_sids[j] )
1849 if ( sid == si->si_sids[j] ) {
1850 if ( ber_bvcmp( &mod->sml_values[i], &si->si_ctxcsn[j] ) > 0 ) {
1851 ber_bvreplace( &si->si_ctxcsn[j], &mod->sml_values[i] );
1858 if ( j == si->si_numcsns || sid != si->si_sids[j] ) {
1859 slap_insert_csn_sids( (struct sync_cookie *)&si->si_ctxcsn,
1860 j, sid, &mod->sml_values[i] );
1866 ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
1868 if ( csn_changed ) {
1870 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1871 for ( ss = si->si_ops; ss; ss = ss->s_next ) {
1872 if ( ss->s_op->o_abandon )
1874 /* Send the updated csn to all syncrepl consumers,
1875 * including the server from which it originated.
1876 * The syncrepl consumer and syncprov provider on
1877 * the originating server may be configured to store
1878 * their csn values in different entries.
1880 syncprov_qresp( opc, ss, LDAP_SYNC_NEW_COOKIE );
1882 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1885 ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
1891 if ( si->si_chkops || si->si_chktime ) {
1892 /* Never checkpoint adding the context entry,
1895 if ( op->o_tag != LDAP_REQ_ADD ||
1896 !dn_match( &op->o_req_ndn, &si->si_contextdn )) {
1897 if ( si->si_chkops && si->si_numops >= si->si_chkops ) {
1901 if ( si->si_chktime &&
1902 (op->o_time - si->si_chklast >= si->si_chktime )) {
1903 if ( si->si_chklast ) {
1905 si->si_chklast = op->o_time;
1912 si->si_dirty = !csn_changed;
1913 ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
1916 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
1917 syncprov_checkpoint( op, on );
1918 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
1921 /* only update consumer ctx if this is a newer csn */
1922 if ( csn_changed ) {
1923 opc->sctxcsn = maxcsn;
1926 /* Handle any persistent searches */
1927 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1928 have_psearches = ( si->si_ops != NULL );
1929 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1930 if ( have_psearches ) {
1933 case LDAP_REQ_MODIFY:
1934 case LDAP_REQ_MODRDN:
1935 case LDAP_REQ_EXTENDED:
1936 syncprov_matchops( op, opc, 0 );
1938 case LDAP_REQ_DELETE:
1939 /* for each match in opc->smatches:
1942 for ( sm = opc->smatches; sm; sm=sm->sm_next ) {
1943 if ( sm->sm_op->s_op->o_abandon )
1945 syncprov_qresp( opc, sm->sm_op, LDAP_SYNC_DELETE );
1951 /* Add any log records */
1952 if ( si->si_logs ) {
1953 syncprov_add_slog( op );
1955 leave: ldap_pvt_thread_mutex_unlock( &si->si_resp_mutex );
1957 return SLAP_CB_CONTINUE;
1960 /* We don't use a subentry to store the context CSN any more.
1961 * We expose the current context CSN as an operational attribute
1962 * of the suffix entry.
1965 syncprov_op_compare( Operation *op, SlapReply *rs )
1967 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1968 syncprov_info_t *si = on->on_bi.bi_private;
1969 int rc = SLAP_CB_CONTINUE;
1971 if ( dn_match( &op->o_req_ndn, &si->si_contextdn ) &&
1972 op->oq_compare.rs_ava->aa_desc == slap_schema.si_ad_contextCSN )
1977 e.e_name = si->si_contextdn;
1978 e.e_nname = si->si_contextdn;
1981 a.a_desc = slap_schema.si_ad_contextCSN;
1983 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
1985 a.a_vals = si->si_ctxcsn;
1986 a.a_nvals = a.a_vals;
1987 a.a_numvals = si->si_numcsns;
1989 rs->sr_err = access_allowed( op, &e, op->oq_compare.rs_ava->aa_desc,
1990 &op->oq_compare.rs_ava->aa_value, ACL_COMPARE, NULL );
1991 if ( ! rs->sr_err ) {
1992 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1993 goto return_results;
1996 if ( get_assert( op ) &&
1997 ( test_filter( op, &e, get_assertion( op ) ) != LDAP_COMPARE_TRUE ) )
1999 rs->sr_err = LDAP_ASSERTION_FAILED;
2000 goto return_results;
2004 rs->sr_err = LDAP_COMPARE_FALSE;
2006 if ( attr_valfind( &a,
2007 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
2008 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
2009 &op->oq_compare.rs_ava->aa_value, NULL, op->o_tmpmemctx ) == 0 )
2011 rs->sr_err = LDAP_COMPARE_TRUE;
2016 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
2018 send_ldap_result( op, rs );
2020 if( rs->sr_err == LDAP_COMPARE_FALSE || rs->sr_err == LDAP_COMPARE_TRUE ) {
2021 rs->sr_err = LDAP_SUCCESS;
2030 syncprov_op_mod( Operation *op, SlapReply *rs )
2032 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
2033 syncprov_info_t *si = on->on_bi.bi_private;
2036 int have_psearches, cbsize;
2038 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
2039 have_psearches = ( si->si_ops != NULL );
2041 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
2043 cbsize = sizeof(slap_callback) + sizeof(opcookie) +
2044 (have_psearches ? sizeof(modinst) : 0 );
2046 cb = op->o_tmpcalloc(1, cbsize, op->o_tmpmemctx);
2047 opc = (opcookie *)(cb+1);
2049 cb->sc_response = syncprov_op_response;
2050 cb->sc_cleanup = syncprov_op_cleanup;
2051 cb->sc_private = opc;
2052 cb->sc_next = op->o_callback;
2053 op->o_callback = cb;
2057 if ( op->o_csn.bv_val ) {
2058 opc->osid = slap_parse_csn_sid( &op->o_csn );
2060 if ( op->o_controls ) {
2061 struct sync_cookie *scook =
2062 op->o_controls[slap_cids.sc_LDAPsync];
2064 opc->rsid = scook->sid;
2067 if ( op->o_dont_replicate )
2068 return SLAP_CB_CONTINUE;
2070 /* If there are active persistent searches, lock this operation.
2071 * See seqmod.c for the locking logic on its own.
2073 if ( have_psearches ) {
2074 modtarget *mt, mtdummy;
2077 mi = (modinst *)(opc+1);
2080 /* See if we're already modifying this entry... */
2082 ldap_pvt_thread_mutex_lock( &si->si_mods_mutex );
2083 mt = avl_find( si->si_mods, &mtdummy, sp_avl_cmp );
2085 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
2086 if ( mt->mt_mods == NULL ) {
2087 /* Cannot reuse this mt, as another thread is about
2088 * to release it in syncprov_op_cleanup.
2090 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
2095 ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
2096 mt->mt_tail->mi_next = mi;
2098 /* wait for this op to get to head of list */
2099 while ( mt->mt_mods != mi ) {
2100 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
2101 /* FIXME: if dynamic config can delete overlays or
2102 * databases we'll have to check for cleanup here.
2103 * Currently it's not an issue because there are
2104 * no dynamic config deletes...
2106 if ( slapd_shutdown )
2107 return SLAPD_ABANDON;
2109 if ( !ldap_pvt_thread_pool_pausecheck( &connection_pool ))
2110 ldap_pvt_thread_yield();
2111 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
2113 /* clean up if the caller is giving up */
2114 if ( op->o_abandon ) {
2116 for ( m2 = mt->mt_mods; m2 && m2->mi_next != mi;
2119 m2->mi_next = mi->mi_next;
2120 if ( mt->mt_tail == mi ) mt->mt_tail = m2;
2122 op->o_tmpfree( cb, op->o_tmpmemctx );
2123 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
2124 return SLAPD_ABANDON;
2127 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
2129 /* Record that we're modifying this entry now */
2130 mt = ch_malloc( sizeof(modtarget) );
2133 mt->mt_op = mi->mi_op;
2134 ldap_pvt_thread_mutex_init( &mt->mt_mutex );
2135 avl_insert( &si->si_mods, mt, sp_avl_cmp, avl_dup_error );
2136 ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
2141 if (( have_psearches || si->si_logs ) && op->o_tag != LDAP_REQ_ADD )
2142 syncprov_matchops( op, opc, 1 );
2144 return SLAP_CB_CONTINUE;
2148 syncprov_op_extended( Operation *op, SlapReply *rs )
2150 if ( exop_is_write( op ))
2151 return syncprov_op_mod( op, rs );
2153 return SLAP_CB_CONTINUE;
2156 typedef struct searchstate {
2157 slap_overinst *ss_on;
2159 BerVarray ss_ctxcsn;
2162 #define SS_PRESENT 0x01
2163 #define SS_CHANGED 0x02
2168 syncprov_search_cleanup( Operation *op, SlapReply *rs )
2170 if ( rs->sr_ctrls ) {
2171 op->o_tmpfree( rs->sr_ctrls[0], op->o_tmpmemctx );
2172 op->o_tmpfree( rs->sr_ctrls, op->o_tmpmemctx );
2173 rs->sr_ctrls = NULL;
2178 typedef struct SyncOperationBuffer {
2182 AttributeName sob_extra; /* not always present */
2183 /* Further data allocated here */
2184 } SyncOperationBuffer;
2187 syncprov_detach_op( Operation *op, syncops *so, slap_overinst *on )
2189 SyncOperationBuffer *sopbuf2;
2194 GroupAssertion *g1, *g2;
2196 /* count the search attrs */
2197 for (i=0; op->ors_attrs && !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++) {
2198 alen += op->ors_attrs[i].an_name.bv_len + 1;
2200 /* Make a new copy of the operation */
2201 size = offsetof( SyncOperationBuffer, sob_extra ) +
2202 (i ? ( (i+1) * sizeof(AttributeName) + alen) : 0) +
2203 op->o_req_dn.bv_len + 1 +
2204 op->o_req_ndn.bv_len + 1 +
2205 op->o_ndn.bv_len + 1 +
2206 so->s_filterstr.bv_len + 1;
2207 sopbuf2 = ch_calloc( 1, size );
2208 op2 = &sopbuf2->sob_op;
2209 op2->o_hdr = &sopbuf2->sob_hdr;
2210 LDAP_SLIST_FIRST(&op2->o_extra) = &sopbuf2->sob_oe;
2212 /* Copy the fields we care about explicitly, leave the rest alone */
2213 *op2->o_hdr = *op->o_hdr;
2214 op2->o_tag = op->o_tag;
2215 op2->o_time = op->o_time;
2216 op2->o_bd = on->on_info->oi_origdb;
2217 op2->o_request = op->o_request;
2218 op2->o_managedsait = op->o_managedsait;
2219 LDAP_SLIST_FIRST(&op2->o_extra)->oe_key = on;
2220 LDAP_SLIST_NEXT(LDAP_SLIST_FIRST(&op2->o_extra), oe_next) = NULL;
2222 ptr = (char *) sopbuf2 + offsetof( SyncOperationBuffer, sob_extra );
2224 op2->ors_attrs = (AttributeName *) ptr;
2225 ptr = (char *) &op2->ors_attrs[i+1];
2226 for (i=0; !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++) {
2227 op2->ors_attrs[i] = op->ors_attrs[i];
2228 op2->ors_attrs[i].an_name.bv_val = ptr;
2229 ptr = lutil_strcopy( ptr, op->ors_attrs[i].an_name.bv_val ) + 1;
2231 BER_BVZERO( &op2->ors_attrs[i].an_name );
2234 op2->o_authz = op->o_authz;
2235 op2->o_ndn.bv_val = ptr;
2236 ptr = lutil_strcopy(ptr, op->o_ndn.bv_val) + 1;
2237 op2->o_dn = op2->o_ndn;
2238 op2->o_req_dn.bv_len = op->o_req_dn.bv_len;
2239 op2->o_req_dn.bv_val = ptr;
2240 ptr = lutil_strcopy(ptr, op->o_req_dn.bv_val) + 1;
2241 op2->o_req_ndn.bv_len = op->o_req_ndn.bv_len;
2242 op2->o_req_ndn.bv_val = ptr;
2243 ptr = lutil_strcopy(ptr, op->o_req_ndn.bv_val) + 1;
2244 op2->ors_filterstr.bv_val = ptr;
2245 strcpy( ptr, so->s_filterstr.bv_val );
2246 op2->ors_filterstr.bv_len = so->s_filterstr.bv_len;
2248 /* Skip the AND/GE clause that we stuck on in front */
2249 if ( so->s_flags & PS_FIX_FILTER ) {
2250 op2->ors_filter = op->ors_filter->f_and->f_next;
2251 so->s_flags ^= PS_FIX_FILTER;
2253 op2->ors_filter = op->ors_filter;
2255 op2->ors_filter = filter_dup( op2->ors_filter, NULL );
2258 /* Copy any cached group ACLs individually */
2259 op2->o_groups = NULL;
2260 for ( g1=op->o_groups; g1; g1=g1->ga_next ) {
2261 g2 = ch_malloc( sizeof(GroupAssertion) + g1->ga_len );
2263 strcpy( g2->ga_ndn, g1->ga_ndn );
2264 g2->ga_next = op2->o_groups;
2267 /* Don't allow any further group caching */
2268 op2->o_do_not_cache = 1;
2270 /* Add op2 to conn so abandon will find us */
2271 op->o_conn->c_n_ops_executing++;
2272 op->o_conn->c_n_ops_completed--;
2273 LDAP_STAILQ_INSERT_TAIL( &op->o_conn->c_ops, op2, o_next );
2274 so->s_flags |= PS_IS_DETACHED;
2276 /* Prevent anyone else from trying to send a result for this op */
2281 syncprov_search_response( Operation *op, SlapReply *rs )
2283 searchstate *ss = op->o_callback->sc_private;
2284 slap_overinst *on = ss->ss_on;
2285 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2286 sync_control *srs = op->o_controls[slap_cids.sc_LDAPsync];
2288 if ( rs->sr_type == REP_SEARCH || rs->sr_type == REP_SEARCHREF ) {
2290 /* If we got a referral without a referral object, there's
2291 * something missing that we cannot replicate. Just ignore it.
2292 * The consumer will abort because we didn't send the expected
2295 if ( !rs->sr_entry ) {
2296 assert( rs->sr_entry != NULL );
2297 Debug( LDAP_DEBUG_ANY, "bogus referral in context\n",0,0,0 );
2298 return SLAP_CB_CONTINUE;
2300 a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_entryCSN );
2301 if ( a == NULL && rs->sr_operational_attrs != NULL ) {
2302 a = attr_find( rs->sr_operational_attrs, slap_schema.si_ad_entryCSN );
2306 sid = slap_parse_csn_sid( &a->a_nvals[0] );
2308 /* Don't send changed entries back to the originator */
2309 if ( sid == srs->sr_state.sid && srs->sr_state.numcsns ) {
2310 Debug( LDAP_DEBUG_SYNC,
2311 "Entry %s changed by peer, ignored\n",
2312 rs->sr_entry->e_name.bv_val, 0, 0 );
2313 return LDAP_SUCCESS;
2316 /* If not a persistent search */
2318 /* Make sure entry is less than the snapshot'd contextCSN */
2319 for ( i=0; i<ss->ss_numcsns; i++ ) {
2320 if ( sid == ss->ss_sids[i] && ber_bvcmp( &a->a_nvals[0],
2321 &ss->ss_ctxcsn[i] ) > 0 ) {
2322 Debug( LDAP_DEBUG_SYNC,
2323 "Entry %s CSN %s greater than snapshot %s\n",
2324 rs->sr_entry->e_name.bv_val,
2325 a->a_nvals[0].bv_val,
2326 ss->ss_ctxcsn[i].bv_val );
2327 return LDAP_SUCCESS;
2332 /* Don't send old entries twice */
2333 if ( srs->sr_state.ctxcsn ) {
2334 for ( i=0; i<srs->sr_state.numcsns; i++ ) {
2335 if ( sid == srs->sr_state.sids[i] &&
2336 ber_bvcmp( &a->a_nvals[0],
2337 &srs->sr_state.ctxcsn[i] )<= 0 ) {
2338 Debug( LDAP_DEBUG_SYNC,
2339 "Entry %s CSN %s older or equal to ctx %s\n",
2340 rs->sr_entry->e_name.bv_val,
2341 a->a_nvals[0].bv_val,
2342 srs->sr_state.ctxcsn[i].bv_val );
2343 return LDAP_SUCCESS;
2348 rs->sr_ctrls = op->o_tmpalloc( sizeof(LDAPControl *)*2,
2350 rs->sr_ctrls[1] = NULL;
2351 rs->sr_flags |= REP_CTRLS_MUSTBEFREED;
2352 /* If we're in delta-sync mode, always send a cookie */
2353 if ( si->si_nopres && si->si_usehint && a ) {
2354 struct berval cookie;
2355 slap_compose_sync_cookie( op, &cookie, a->a_nvals, srs->sr_state.rid, slap_serverID ? slap_serverID : -1 );
2356 rs->sr_err = syncprov_state_ctrl( op, rs, rs->sr_entry,
2357 LDAP_SYNC_ADD, rs->sr_ctrls, 0, 1, &cookie );
2358 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
2360 rs->sr_err = syncprov_state_ctrl( op, rs, rs->sr_entry,
2361 LDAP_SYNC_ADD, rs->sr_ctrls, 0, 0, NULL );
2363 } else if ( rs->sr_type == REP_RESULT && rs->sr_err == LDAP_SUCCESS ) {
2364 struct berval cookie = BER_BVNULL;
2366 if ( ( ss->ss_flags & SS_CHANGED ) &&
2367 ss->ss_ctxcsn && !BER_BVISNULL( &ss->ss_ctxcsn[0] )) {
2368 slap_compose_sync_cookie( op, &cookie, ss->ss_ctxcsn,
2369 srs->sr_state.rid, slap_serverID ? slap_serverID : -1 );
2371 Debug( LDAP_DEBUG_SYNC, "syncprov_search_response: cookie=%s\n", cookie.bv_val, 0, 0 );
2374 /* Is this a regular refresh?
2375 * Note: refresh never gets here if there were no changes
2378 rs->sr_ctrls = op->o_tmpalloc( sizeof(LDAPControl *)*2,
2380 rs->sr_ctrls[1] = NULL;
2381 rs->sr_err = syncprov_done_ctrl( op, rs, rs->sr_ctrls,
2382 0, 1, &cookie, ( ss->ss_flags & SS_PRESENT ) ? LDAP_SYNC_REFRESH_PRESENTS :
2383 LDAP_SYNC_REFRESH_DELETES );
2384 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
2386 /* It's RefreshAndPersist, transition to Persist phase */
2387 syncprov_sendinfo( op, rs, ( ss->ss_flags & SS_PRESENT ) ?
2388 LDAP_TAG_SYNC_REFRESH_PRESENT : LDAP_TAG_SYNC_REFRESH_DELETE,
2389 ( ss->ss_flags & SS_CHANGED ) ? &cookie : NULL,
2391 if ( !BER_BVISNULL( &cookie ))
2392 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
2394 /* Detach this Op from frontend control */
2395 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
2397 /* But not if this connection was closed along the way */
2398 if ( op->o_abandon ) {
2399 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
2400 /* syncprov_ab_cleanup will free this syncop */
2401 return SLAPD_ABANDON;
2404 ldap_pvt_thread_mutex_lock( &ss->ss_so->s_mutex );
2405 /* Turn off the refreshing flag */
2406 ss->ss_so->s_flags ^= PS_IS_REFRESHING;
2408 syncprov_detach_op( op, ss->ss_so, on );
2410 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
2412 /* If there are queued responses, fire them off */
2413 if ( ss->ss_so->s_res )
2414 syncprov_qstart( ss->ss_so );
2415 ldap_pvt_thread_mutex_unlock( &ss->ss_so->s_mutex );
2418 return LDAP_SUCCESS;
2422 return SLAP_CB_CONTINUE;
2426 syncprov_op_search( Operation *op, SlapReply *rs )
2428 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
2429 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2431 int gotstate = 0, changed = 0, do_present = 0;
2432 syncops *sop = NULL;
2436 int i, *sids, numcsns;
2437 struct berval mincsn, maxcsn;
2441 if ( !(op->o_sync_mode & SLAP_SYNC_REFRESH) ) return SLAP_CB_CONTINUE;
2443 if ( op->ors_deref & LDAP_DEREF_SEARCHING ) {
2444 send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR, "illegal value for derefAliases" );
2448 srs = op->o_controls[slap_cids.sc_LDAPsync];
2450 /* If this is a persistent search, set it up right away */
2451 if ( op->o_sync_mode & SLAP_SYNC_PERSIST ) {
2461 so.s_flags = PS_IS_REFRESHING | PS_FIND_BASE;
2462 /* syncprov_findbase expects to be called as a callback... */
2463 sc.sc_private = &opc;
2465 ldap_pvt_thread_mutex_init( &so.s_mutex );
2466 cb = op->o_callback;
2467 op->o_callback = ≻
2468 rs->sr_err = syncprov_findbase( op, &fc );
2469 op->o_callback = cb;
2470 ldap_pvt_thread_mutex_destroy( &so.s_mutex );
2472 if ( rs->sr_err != LDAP_SUCCESS ) {
2473 send_ldap_result( op, rs );
2476 sop = ch_malloc( sizeof( syncops ));
2478 ldap_pvt_thread_mutex_init( &sop->s_mutex );
2479 sop->s_rid = srs->sr_state.rid;
2480 sop->s_sid = srs->sr_state.sid;
2481 /* set refcount=2 to prevent being freed out from under us
2482 * by abandons that occur while we're running here
2486 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
2487 while ( si->si_active ) {
2488 /* Wait for active mods to finish before proceeding, as they
2489 * may already have inspected the si_ops list looking for
2490 * consumers to replicate the change to. Using the log
2491 * doesn't help, as we may finish playing it before the
2492 * active mods gets added to it.
2494 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
2495 if ( slapd_shutdown )
2496 return SLAPD_ABANDON;
2497 if ( !ldap_pvt_thread_pool_pausecheck( &connection_pool ))
2498 ldap_pvt_thread_yield();
2499 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
2501 sop->s_next = si->si_ops;
2503 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
2506 /* snapshot the ctxcsn */
2507 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
2508 numcsns = si->si_numcsns;
2510 ber_bvarray_dup_x( &ctxcsn, si->si_ctxcsn, op->o_tmpmemctx );
2511 sids = op->o_tmpalloc( numcsns * sizeof(int), op->o_tmpmemctx );
2512 for ( i=0; i<numcsns; i++ )
2513 sids[i] = si->si_sids[i];
2518 dirty = si->si_dirty;
2519 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
2521 /* If we have a cookie, handle the PRESENT lookups */
2522 if ( srs->sr_state.ctxcsn ) {
2526 /* If we don't have any CSN of our own yet, pretend nothing
2532 if ( !si->si_nopres )
2533 do_present = SS_PRESENT;
2535 /* If there are SIDs we don't recognize in the cookie, drop them */
2536 for (i=0; i<srs->sr_state.numcsns; ) {
2537 for (j=i; j<numcsns; j++) {
2538 if ( srs->sr_state.sids[i] <= sids[j] ) {
2543 if ( j == numcsns || srs->sr_state.sids[i] != sids[j] ) {
2544 char *tmp = srs->sr_state.ctxcsn[i].bv_val;
2545 srs->sr_state.numcsns--;
2546 for ( j=i; j<srs->sr_state.numcsns; j++ ) {
2547 srs->sr_state.ctxcsn[j] = srs->sr_state.ctxcsn[j+1];
2548 srs->sr_state.sids[j] = srs->sr_state.sids[j+1];
2550 srs->sr_state.ctxcsn[j].bv_val = tmp;
2551 srs->sr_state.ctxcsn[j].bv_len = 0;
2557 if (srs->sr_state.numcsns != numcsns) {
2558 /* consumer doesn't have the right number of CSNs */
2559 changed = SS_CHANGED;
2560 if ( srs->sr_state.ctxcsn ) {
2561 ber_bvarray_free_x( srs->sr_state.ctxcsn, op->o_tmpmemctx );
2562 srs->sr_state.ctxcsn = NULL;
2564 if ( srs->sr_state.sids ) {
2565 slap_sl_free( srs->sr_state.sids, op->o_tmpmemctx );
2566 srs->sr_state.sids = NULL;
2568 srs->sr_state.numcsns = 0;
2572 /* Find the smallest CSN which differs from contextCSN */
2575 for ( i=0,j=0; i<srs->sr_state.numcsns; i++ ) {
2577 while ( srs->sr_state.sids[i] != sids[j] ) j++;
2578 if ( BER_BVISEMPTY( &maxcsn ) || ber_bvcmp( &maxcsn,
2579 &srs->sr_state.ctxcsn[i] ) < 0 ) {
2580 maxcsn = srs->sr_state.ctxcsn[i];
2583 newer = ber_bvcmp( &srs->sr_state.ctxcsn[i], &ctxcsn[j] );
2584 /* If our state is newer, tell consumer about changes */
2586 changed = SS_CHANGED;
2587 if ( BER_BVISEMPTY( &mincsn ) || ber_bvcmp( &mincsn,
2588 &srs->sr_state.ctxcsn[i] ) > 0 ) {
2589 mincsn = srs->sr_state.ctxcsn[i];
2592 } else if ( newer > 0 && sids[j] == slap_serverID ) {
2593 /* our state is older, complain to consumer */
2594 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
2595 rs->sr_text = "consumer state is newer than provider!";
2598 syncops **sp = &si->si_ops;
2600 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
2601 while ( *sp != sop )
2602 sp = &(*sp)->s_next;
2604 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
2607 rs->sr_ctrls = NULL;
2608 send_ldap_result( op, rs );
2612 if ( BER_BVISEMPTY( &mincsn )) {
2617 /* If nothing has changed, shortcut it */
2618 if ( !changed && !dirty ) {
2620 no_change: if ( !(op->o_sync_mode & SLAP_SYNC_PERSIST) ) {
2621 LDAPControl *ctrls[2];
2625 syncprov_done_ctrl( op, rs, ctrls, 0, 0,
2626 NULL, LDAP_SYNC_REFRESH_DELETES );
2627 rs->sr_ctrls = ctrls;
2628 rs->sr_err = LDAP_SUCCESS;
2629 send_ldap_result( op, rs );
2630 rs->sr_ctrls = NULL;
2636 /* Do we have a sessionlog for this search? */
2640 ldap_pvt_thread_mutex_lock( &sl->sl_mutex );
2641 /* Are there any log entries, and is the consumer state
2642 * present in the session log?
2644 if ( sl->sl_num > 0 ) {
2646 for ( i=0; i<sl->sl_numcsns; i++ ) {
2647 /* SID not present == new enough */
2648 if ( minsid < sl->sl_sids[i] ) {
2653 if ( minsid == sl->sl_sids[i] ) {
2655 if ( ber_bvcmp( &mincsn, &sl->sl_mincsn[i] ) >= 0 )
2660 /* SID not present == new enough */
2661 if ( i == sl->sl_numcsns )
2666 /* mutex is unlocked in playlog */
2667 syncprov_playlog( op, rs, sl, srs, ctxcsn, numcsns, sids );
2669 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
2672 /* Is the CSN still present in the database? */
2673 if ( syncprov_findcsn( op, FIND_CSN, &mincsn ) != LDAP_SUCCESS ) {
2674 /* No, so a reload is required */
2675 /* the 2.2 consumer doesn't send this hint */
2676 if ( si->si_usehint && srs->sr_rhint == 0 ) {
2678 ber_bvarray_free_x( ctxcsn, op->o_tmpmemctx );
2680 op->o_tmpfree( sids, op->o_tmpmemctx );
2681 rs->sr_err = LDAP_SYNC_REFRESH_REQUIRED;
2682 rs->sr_text = "sync cookie is stale";
2685 if ( srs->sr_state.ctxcsn ) {
2686 ber_bvarray_free_x( srs->sr_state.ctxcsn, op->o_tmpmemctx );
2687 srs->sr_state.ctxcsn = NULL;
2689 if ( srs->sr_state.sids ) {
2690 slap_sl_free( srs->sr_state.sids, op->o_tmpmemctx );
2691 srs->sr_state.sids = NULL;
2693 srs->sr_state.numcsns = 0;
2696 /* If changed and doing Present lookup, send Present UUIDs */
2697 if ( do_present && syncprov_findcsn( op, FIND_PRESENT, 0 ) !=
2700 ber_bvarray_free_x( ctxcsn, op->o_tmpmemctx );
2702 op->o_tmpfree( sids, op->o_tmpmemctx );
2707 /* No consumer state, assume something has changed */
2708 changed = SS_CHANGED;
2712 /* Append CSN range to search filter, save original filter
2713 * for persistent search evaluation
2716 ldap_pvt_thread_mutex_lock( &sop->s_mutex );
2717 sop->s_filterstr = op->ors_filterstr;
2718 /* correct the refcount that was set to 2 before */
2722 /* If something changed, find the changes */
2723 if ( gotstate && ( changed || dirty ) ) {
2724 Filter *fand, *fava;
2726 fand = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
2727 fand->f_choice = LDAP_FILTER_AND;
2728 fand->f_next = NULL;
2729 fava = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
2731 fava->f_choice = LDAP_FILTER_GE;
2732 fava->f_ava = op->o_tmpalloc( sizeof(AttributeAssertion), op->o_tmpmemctx );
2733 fava->f_ava->aa_desc = slap_schema.si_ad_entryCSN;
2734 #ifdef LDAP_COMP_MATCH
2735 fava->f_ava->aa_cf = NULL;
2737 ber_dupbv_x( &fava->f_ava->aa_value, &mincsn, op->o_tmpmemctx );
2738 fava->f_next = op->ors_filter;
2739 op->ors_filter = fand;
2740 filter2bv_x( op, op->ors_filter, &op->ors_filterstr );
2742 sop->s_flags |= PS_FIX_FILTER;
2746 ldap_pvt_thread_mutex_unlock( &sop->s_mutex );
2749 /* Let our callback add needed info to returned entries */
2750 cb = op->o_tmpcalloc(1, sizeof(slap_callback)+sizeof(searchstate), op->o_tmpmemctx);
2751 ss = (searchstate *)(cb+1);
2754 ss->ss_flags = do_present | changed;
2755 ss->ss_ctxcsn = ctxcsn;
2756 ss->ss_numcsns = numcsns;
2758 cb->sc_response = syncprov_search_response;
2759 cb->sc_cleanup = syncprov_search_cleanup;
2760 cb->sc_private = ss;
2761 cb->sc_next = op->o_callback;
2762 op->o_callback = cb;
2764 /* If this is a persistent search and no changes were reported during
2765 * the refresh phase, just invoke the response callback to transition
2766 * us into persist phase
2768 if ( !changed && !dirty ) {
2769 rs->sr_err = LDAP_SUCCESS;
2770 rs->sr_nentries = 0;
2771 send_ldap_result( op, rs );
2774 return SLAP_CB_CONTINUE;
2778 syncprov_operational(
2782 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
2783 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2785 /* This prevents generating unnecessarily; frontend will strip
2786 * any statically stored copy.
2788 if ( op->o_sync != SLAP_CONTROL_NONE )
2789 return SLAP_CB_CONTINUE;
2791 if ( rs->sr_entry &&
2792 dn_match( &rs->sr_entry->e_nname, &si->si_contextdn )) {
2794 if ( SLAP_OPATTRS( rs->sr_attr_flags ) ||
2795 ad_inlist( slap_schema.si_ad_contextCSN, rs->sr_attrs )) {
2796 Attribute *a, **ap = NULL;
2798 for ( a=rs->sr_entry->e_attrs; a; a=a->a_next ) {
2799 if ( a->a_desc == slap_schema.si_ad_contextCSN )
2803 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
2804 if ( si->si_ctxcsn ) {
2806 for ( ap = &rs->sr_operational_attrs; *ap;
2807 ap=&(*ap)->a_next );
2809 a = attr_alloc( slap_schema.si_ad_contextCSN );
2814 if ( rs_entry2modifiable( op, rs, on )) {
2815 a = attr_find( rs->sr_entry->e_attrs,
2816 slap_schema.si_ad_contextCSN );
2818 if ( a->a_nvals != a->a_vals ) {
2819 ber_bvarray_free( a->a_nvals );
2822 ber_bvarray_free( a->a_vals );
2826 attr_valadd( a, si->si_ctxcsn, si->si_ctxcsn, si->si_numcsns );
2828 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
2831 return SLAP_CB_CONTINUE;
2841 static ConfigDriver sp_cf_gen;
2843 static ConfigTable spcfg[] = {
2844 { "syncprov-checkpoint", "ops> <minutes", 3, 3, 0, ARG_MAGIC|SP_CHKPT,
2845 sp_cf_gen, "( OLcfgOvAt:1.1 NAME 'olcSpCheckpoint' "
2846 "DESC 'ContextCSN checkpoint interval in ops and minutes' "
2847 "SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
2848 { "syncprov-sessionlog", "ops", 2, 2, 0, ARG_INT|ARG_MAGIC|SP_SESSL,
2849 sp_cf_gen, "( OLcfgOvAt:1.2 NAME 'olcSpSessionlog' "
2850 "DESC 'Session log size in ops' "
2851 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
2852 { "syncprov-nopresent", NULL, 2, 2, 0, ARG_ON_OFF|ARG_MAGIC|SP_NOPRES,
2853 sp_cf_gen, "( OLcfgOvAt:1.3 NAME 'olcSpNoPresent' "
2854 "DESC 'Omit Present phase processing' "
2855 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
2856 { "syncprov-reloadhint", NULL, 2, 2, 0, ARG_ON_OFF|ARG_MAGIC|SP_USEHINT,
2857 sp_cf_gen, "( OLcfgOvAt:1.4 NAME 'olcSpReloadHint' "
2858 "DESC 'Observe Reload Hint in Request control' "
2859 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
2860 { NULL, NULL, 0, 0, 0, ARG_IGNORED }
2863 static ConfigOCs spocs[] = {
2864 { "( OLcfgOvOc:1.1 "
2865 "NAME 'olcSyncProvConfig' "
2866 "DESC 'SyncRepl Provider configuration' "
2867 "SUP olcOverlayConfig "
2868 "MAY ( olcSpCheckpoint "
2869 "$ olcSpSessionlog "
2871 "$ olcSpReloadHint "
2873 Cft_Overlay, spcfg },
2878 sp_cf_gen(ConfigArgs *c)
2880 slap_overinst *on = (slap_overinst *)c->bi;
2881 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2884 if ( c->op == SLAP_CONFIG_EMIT ) {
2885 switch ( c->type ) {
2887 if ( si->si_chkops || si->si_chktime ) {
2889 /* we assume si_chktime is a multiple of 60
2890 * because the parsed value was originally
2891 * multiplied by 60 */
2892 bv.bv_len = snprintf( c->cr_msg, sizeof( c->cr_msg ),
2893 "%d %d", si->si_chkops, si->si_chktime/60 );
2894 if ( bv.bv_len >= sizeof( c->cr_msg ) ) {
2897 bv.bv_val = c->cr_msg;
2898 value_add_one( &c->rvalue_vals, &bv );
2905 if ( si->si_logs ) {
2906 c->value_int = si->si_logs->sl_size;
2912 if ( si->si_nopres ) {
2919 if ( si->si_usehint ) {
2927 } else if ( c->op == LDAP_MOD_DELETE ) {
2928 switch ( c->type ) {
2935 si->si_logs->sl_size = 0;
2937 rc = LDAP_NO_SUCH_ATTRIBUTE;
2940 if ( si->si_nopres )
2943 rc = LDAP_NO_SUCH_ATTRIBUTE;
2946 if ( si->si_usehint )
2949 rc = LDAP_NO_SUCH_ATTRIBUTE;
2954 switch ( c->type ) {
2956 if ( lutil_atoi( &si->si_chkops, c->argv[1] ) != 0 ) {
2957 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s unable to parse checkpoint ops # \"%s\"",
2958 c->argv[0], c->argv[1] );
2959 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2960 "%s: %s\n", c->log, c->cr_msg, 0 );
2961 return ARG_BAD_CONF;
2963 if ( si->si_chkops <= 0 ) {
2964 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s invalid checkpoint ops # \"%d\"",
2965 c->argv[0], si->si_chkops );
2966 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2967 "%s: %s\n", c->log, c->cr_msg, 0 );
2968 return ARG_BAD_CONF;
2970 if ( lutil_atoi( &si->si_chktime, c->argv[2] ) != 0 ) {
2971 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s unable to parse checkpoint time \"%s\"",
2972 c->argv[0], c->argv[1] );
2973 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2974 "%s: %s\n", c->log, c->cr_msg, 0 );
2975 return ARG_BAD_CONF;
2977 if ( si->si_chktime <= 0 ) {
2978 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s invalid checkpoint time \"%d\"",
2979 c->argv[0], si->si_chkops );
2980 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2981 "%s: %s\n", c->log, c->cr_msg, 0 );
2982 return ARG_BAD_CONF;
2984 si->si_chktime *= 60;
2988 int size = c->value_int;
2991 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s size %d is negative",
2993 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2994 "%s: %s\n", c->log, c->cr_msg, 0 );
2995 return ARG_BAD_CONF;
2999 sl = ch_malloc( sizeof( sessionlog ));
3000 sl->sl_mincsn = NULL;
3004 sl->sl_head = sl->sl_tail = NULL;
3005 ldap_pvt_thread_mutex_init( &sl->sl_mutex );
3012 si->si_nopres = c->value_int;
3015 si->si_usehint = c->value_int;
3021 /* ITS#3456 we cannot run this search on the main thread, must use a
3022 * child thread in order to insure we have a big enough stack.
3029 syncprov_findcsn( ptr, FIND_MAXCSN, 0 );
3034 /* Read any existing contextCSN from the underlying db.
3035 * Then search for any entries newer than that. If no value exists,
3036 * just generate it. Cache whatever result.
3044 slap_overinst *on = (slap_overinst *) be->bd_info;
3045 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
3047 Connection conn = { 0 };
3048 OperationBuffer opbuf;
3053 void *thrctx = NULL;
3055 if ( !SLAP_LASTMOD( be )) {
3056 Debug( LDAP_DEBUG_ANY,
3057 "syncprov_db_open: invalid config, lastmod must be enabled\n", 0, 0, 0 );
3061 if ( slapMode & SLAP_TOOL_MODE ) {
3065 rc = overlay_register_control( be, LDAP_CONTROL_SYNC );
3070 thrctx = ldap_pvt_thread_pool_context();
3071 connection_fake_init2( &conn, &opbuf, thrctx, 0 );
3074 op->o_dn = be->be_rootdn;
3075 op->o_ndn = be->be_rootndn;
3077 if ( SLAP_SYNC_SUBENTRY( be )) {
3078 build_new_dn( &si->si_contextdn, be->be_nsuffix,
3079 (struct berval *)&slap_ldapsync_cn_bv, NULL );
3081 si->si_contextdn = be->be_nsuffix[0];
3083 rc = overlay_entry_get_ov( op, &si->si_contextdn, NULL,
3084 slap_schema.si_ad_contextCSN, 0, &e, on );
3087 ldap_pvt_thread_t tid;
3089 a = attr_find( e->e_attrs, slap_schema.si_ad_contextCSN );
3091 ber_bvarray_dup_x( &si->si_ctxcsn, a->a_vals, NULL );
3092 si->si_numcsns = a->a_numvals;
3093 si->si_sids = slap_parse_csn_sids( si->si_ctxcsn, a->a_numvals, NULL );
3094 slap_sort_csn_sids( si->si_ctxcsn, si->si_sids, si->si_numcsns, NULL );
3096 overlay_entry_release_ov( op, e, 0, on );
3097 if ( si->si_ctxcsn && !SLAP_DBCLEAN( be )) {
3098 op->o_tag = LDAP_REQ_SEARCH;
3099 op->o_req_dn = be->be_suffix[0];
3100 op->o_req_ndn = be->be_nsuffix[0];
3101 op->ors_scope = LDAP_SCOPE_SUBTREE;
3102 ldap_pvt_thread_create( &tid, 0, syncprov_db_otask, op );
3103 ldap_pvt_thread_join( tid, NULL );
3107 /* Didn't find a contextCSN, should we generate one? */
3108 if ( !si->si_ctxcsn ) {
3109 char csnbuf[ LDAP_PVT_CSNSTR_BUFSIZE ];
3112 if ( SLAP_SYNC_SHADOW( op->o_bd )) {
3113 /* If we're also a consumer, then don't generate anything.
3114 * Wait for our provider to send it to us, or for a local
3115 * modify if we have multimaster.
3119 csn.bv_val = csnbuf;
3120 csn.bv_len = sizeof( csnbuf );
3121 slap_get_csn( op, &csn, 0 );
3122 value_add_one( &si->si_ctxcsn, &csn );
3124 si->si_sids = ch_malloc( sizeof(int) );
3125 si->si_sids[0] = slap_serverID;
3127 /* make sure we do a checkpoint on close */
3131 /* Initialize the sessionlog mincsn */
3132 if ( si->si_logs && si->si_numcsns ) {
3133 sessionlog *sl = si->si_logs;
3135 ber_bvarray_dup_x( &sl->sl_mincsn, si->si_ctxcsn, NULL );
3136 sl->sl_numcsns = si->si_numcsns;
3137 sl->sl_sids = ch_malloc( si->si_numcsns * sizeof(int) );
3138 for ( i=0; i < si->si_numcsns; i++ )
3139 sl->sl_sids[i] = si->si_sids[i];
3143 op->o_bd->bd_info = (BackendInfo *)on;
3147 /* Write the current contextCSN into the underlying db.
3155 slap_overinst *on = (slap_overinst *) be->bd_info;
3156 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
3157 #ifdef SLAP_CONFIG_DELETE
3158 syncops *so, *sonext;
3159 #endif /* SLAP_CONFIG_DELETE */
3161 if ( slapMode & SLAP_TOOL_MODE ) {
3164 if ( si->si_numops ) {
3165 Connection conn = {0};
3166 OperationBuffer opbuf;
3170 thrctx = ldap_pvt_thread_pool_context();
3171 connection_fake_init2( &conn, &opbuf, thrctx, 0 );
3174 op->o_dn = be->be_rootdn;
3175 op->o_ndn = be->be_rootndn;
3176 syncprov_checkpoint( op, on );
3179 #ifdef SLAP_CONFIG_DELETE
3180 if ( !slapd_shutdown ) {
3181 for ( so=si->si_ops, sonext=so; so; so=sonext ) {
3182 SlapReply rs = {REP_RESULT};
3183 rs.sr_err = LDAP_UNAVAILABLE;
3184 send_ldap_result( so->s_op, &rs );
3186 syncprov_drop_psearch( so, 0);
3190 overlay_unregister_control( be, LDAP_CONTROL_SYNC );
3191 #endif /* SLAP_CONFIG_DELETE */
3202 slap_overinst *on = (slap_overinst *)be->bd_info;
3203 syncprov_info_t *si;
3205 if ( SLAP_ISGLOBALOVERLAY( be ) ) {
3206 Debug( LDAP_DEBUG_ANY,
3207 "syncprov must be instantiated within a database.\n",
3212 si = ch_calloc(1, sizeof(syncprov_info_t));
3213 on->on_bi.bi_private = si;
3214 ldap_pvt_thread_rdwr_init( &si->si_csn_rwlock );
3215 ldap_pvt_thread_mutex_init( &si->si_ops_mutex );
3216 ldap_pvt_thread_mutex_init( &si->si_mods_mutex );
3217 ldap_pvt_thread_mutex_init( &si->si_resp_mutex );
3219 csn_anlist[0].an_desc = slap_schema.si_ad_entryCSN;
3220 csn_anlist[0].an_name = slap_schema.si_ad_entryCSN->ad_cname;
3221 csn_anlist[1].an_desc = slap_schema.si_ad_entryUUID;
3222 csn_anlist[1].an_name = slap_schema.si_ad_entryUUID->ad_cname;
3224 uuid_anlist[0].an_desc = slap_schema.si_ad_entryUUID;
3225 uuid_anlist[0].an_name = slap_schema.si_ad_entryUUID->ad_cname;
3231 syncprov_db_destroy(
3236 slap_overinst *on = (slap_overinst *)be->bd_info;
3237 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
3240 if ( si->si_logs ) {
3241 sessionlog *sl = si->si_logs;
3242 slog_entry *se = sl->sl_head;
3245 slog_entry *se_next = se->se_next;
3249 if ( sl->sl_mincsn )
3250 ber_bvarray_free( sl->sl_mincsn );
3252 ch_free( sl->sl_sids );
3254 ldap_pvt_thread_mutex_destroy(&si->si_logs->sl_mutex);
3255 ch_free( si->si_logs );
3257 if ( si->si_ctxcsn )
3258 ber_bvarray_free( si->si_ctxcsn );
3260 ch_free( si->si_sids );
3261 ldap_pvt_thread_mutex_destroy( &si->si_resp_mutex );
3262 ldap_pvt_thread_mutex_destroy( &si->si_mods_mutex );
3263 ldap_pvt_thread_mutex_destroy( &si->si_ops_mutex );
3264 ldap_pvt_thread_rdwr_destroy( &si->si_csn_rwlock );
3271 static int syncprov_parseCtrl (
3277 BerElementBuffer berbuf;
3278 BerElement *ber = (BerElement *)&berbuf;
3281 struct berval cookie = BER_BVNULL;
3285 if ( op->o_sync != SLAP_CONTROL_NONE ) {
3286 rs->sr_text = "Sync control specified multiple times";
3287 return LDAP_PROTOCOL_ERROR;
3290 if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
3291 rs->sr_text = "Sync control specified with pagedResults control";
3292 return LDAP_PROTOCOL_ERROR;
3295 if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
3296 rs->sr_text = "Sync control value is absent";
3297 return LDAP_PROTOCOL_ERROR;
3300 if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
3301 rs->sr_text = "Sync control value is empty";
3302 return LDAP_PROTOCOL_ERROR;
3305 /* Parse the control value
3306 * syncRequestValue ::= SEQUENCE {
3311 * refreshAndPersist (3)
3313 * cookie syncCookie OPTIONAL
3317 ber_init2( ber, &ctrl->ldctl_value, 0 );
3319 if ( (tag = ber_scanf( ber, "{i" /*}*/, &mode )) == LBER_ERROR ) {
3320 rs->sr_text = "Sync control : mode decoding error";
3321 return LDAP_PROTOCOL_ERROR;
3325 case LDAP_SYNC_REFRESH_ONLY:
3326 mode = SLAP_SYNC_REFRESH;
3328 case LDAP_SYNC_REFRESH_AND_PERSIST:
3329 mode = SLAP_SYNC_REFRESH_AND_PERSIST;
3332 rs->sr_text = "Sync control : unknown update mode";
3333 return LDAP_PROTOCOL_ERROR;
3336 tag = ber_peek_tag( ber, &len );
3338 if ( tag == LDAP_TAG_SYNC_COOKIE ) {
3339 if (( ber_scanf( ber, /*{*/ "m", &cookie )) == LBER_ERROR ) {
3340 rs->sr_text = "Sync control : cookie decoding error";
3341 return LDAP_PROTOCOL_ERROR;
3343 tag = ber_peek_tag( ber, &len );
3345 if ( tag == LDAP_TAG_RELOAD_HINT ) {
3346 if (( ber_scanf( ber, /*{*/ "b", &rhint )) == LBER_ERROR ) {
3347 rs->sr_text = "Sync control : rhint decoding error";
3348 return LDAP_PROTOCOL_ERROR;
3351 if (( ber_scanf( ber, /*{*/ "}")) == LBER_ERROR ) {
3352 rs->sr_text = "Sync control : decoding error";
3353 return LDAP_PROTOCOL_ERROR;
3355 sr = op->o_tmpcalloc( 1, sizeof(struct sync_control), op->o_tmpmemctx );
3356 sr->sr_rhint = rhint;
3357 if (!BER_BVISNULL(&cookie)) {
3358 ber_dupbv_x( &sr->sr_state.octet_str, &cookie, op->o_tmpmemctx );
3359 /* If parse fails, pretend no cookie was sent */
3360 if ( slap_parse_sync_cookie( &sr->sr_state, op->o_tmpmemctx ) ||
3361 sr->sr_state.rid == -1 ) {
3362 if ( sr->sr_state.ctxcsn ) {
3363 ber_bvarray_free_x( sr->sr_state.ctxcsn, op->o_tmpmemctx );
3364 sr->sr_state.ctxcsn = NULL;
3366 sr->sr_state.numcsns = 0;
3370 op->o_controls[slap_cids.sc_LDAPsync] = sr;
3372 op->o_sync = ctrl->ldctl_iscritical
3373 ? SLAP_CONTROL_CRITICAL
3374 : SLAP_CONTROL_NONCRITICAL;
3376 op->o_sync_mode |= mode; /* o_sync_mode shares o_sync */
3378 return LDAP_SUCCESS;
3381 /* This overlay is set up for dynamic loading via moduleload. For static
3382 * configuration, you'll need to arrange for the slap_overinst to be
3383 * initialized and registered by some other function inside slapd.
3386 static slap_overinst syncprov;
3389 syncprov_initialize()
3393 rc = register_supported_control( LDAP_CONTROL_SYNC,
3394 SLAP_CTRL_SEARCH, NULL,
3395 syncprov_parseCtrl, &slap_cids.sc_LDAPsync );
3396 if ( rc != LDAP_SUCCESS ) {
3397 Debug( LDAP_DEBUG_ANY,
3398 "syncprov_init: Failed to register control %d\n", rc, 0, 0 );
3402 syncprov.on_bi.bi_type = "syncprov";
3403 syncprov.on_bi.bi_db_init = syncprov_db_init;
3404 syncprov.on_bi.bi_db_destroy = syncprov_db_destroy;
3405 syncprov.on_bi.bi_db_open = syncprov_db_open;
3406 syncprov.on_bi.bi_db_close = syncprov_db_close;
3408 syncprov.on_bi.bi_op_abandon = syncprov_op_abandon;
3409 syncprov.on_bi.bi_op_cancel = syncprov_op_abandon;
3411 syncprov.on_bi.bi_op_add = syncprov_op_mod;
3412 syncprov.on_bi.bi_op_compare = syncprov_op_compare;
3413 syncprov.on_bi.bi_op_delete = syncprov_op_mod;
3414 syncprov.on_bi.bi_op_modify = syncprov_op_mod;
3415 syncprov.on_bi.bi_op_modrdn = syncprov_op_mod;
3416 syncprov.on_bi.bi_op_search = syncprov_op_search;
3417 syncprov.on_bi.bi_extended = syncprov_op_extended;
3418 syncprov.on_bi.bi_operational = syncprov_operational;
3420 syncprov.on_bi.bi_cf_ocs = spocs;
3422 generic_filter.f_desc = slap_schema.si_ad_objectClass;
3424 rc = config_register_schema( spcfg, spocs );
3425 if ( rc ) return rc;
3427 return overlay_register( &syncprov );
3430 #if SLAPD_OVER_SYNCPROV == SLAPD_MOD_DYNAMIC
3432 init_module( int argc, char *argv[] )
3434 return syncprov_initialize();
3436 #endif /* SLAPD_OVER_SYNCPROV == SLAPD_MOD_DYNAMIC */
3438 #endif /* defined(SLAPD_OVER_SYNCPROV) */