2 /* syncprov.c - syncrepl provider */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 2004-2010 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 {
116 struct berval sl_mincsn;
121 ldap_pvt_thread_mutex_t sl_mutex;
124 /* The main state for this overlay */
125 typedef struct syncprov_info_t {
127 BerVarray si_ctxcsn; /* ldapsync context */
128 struct berval si_contextdn;
131 int si_chkops; /* checkpointing info */
133 int si_numops; /* number of ops since last checkpoint */
134 int si_nopres; /* Skip present phase */
135 int si_usehint; /* use reload hint */
136 time_t si_chklast; /* time of last checkpoint */
137 Avlnode *si_mods; /* entries being modified */
139 ldap_pvt_thread_rdwr_t si_csn_rwlock;
140 ldap_pvt_thread_mutex_t si_ops_mutex;
141 ldap_pvt_thread_mutex_t si_mods_mutex;
142 ldap_pvt_thread_mutex_t si_resp_mutex;
145 typedef struct opcookie {
147 syncmatches *smatches;
150 struct berval sdn; /* DN of entry, for deletes */
152 struct berval suuid; /* UUID of entry */
153 struct berval sctxcsn;
154 short osid; /* sid of op csn */
155 short rsid; /* sid of relay */
156 short sreference; /* Is the entry a reference? */
159 typedef struct mutexint {
160 ldap_pvt_thread_mutex_t mi_mutex;
164 typedef struct fbase_cookie {
165 struct berval *fdn; /* DN of a modified entry, for scope testing */
166 syncops *fss; /* persistent search we're testing against */
167 int fbase; /* if TRUE we found the search base and it's still valid */
168 int fscope; /* if TRUE then fdn is within the psearch scope */
171 static AttributeName csn_anlist[3];
172 static AttributeName uuid_anlist[2];
174 /* Build a LDAPsync intermediate state control */
180 int entry_sync_state,
184 struct berval *cookie )
189 BerElementBuffer berbuf;
190 BerElement *ber = (BerElement *)&berbuf;
192 struct berval entryuuid_bv = BER_BVNULL;
194 ber_init2( ber, 0, LBER_USE_DER );
195 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
197 ctrls[num_ctrls] = op->o_tmpalloc( sizeof ( LDAPControl ), op->o_tmpmemctx );
199 for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
200 AttributeDescription *desc = a->a_desc;
201 if ( desc == slap_schema.si_ad_entryUUID ) {
202 entryuuid_bv = a->a_nvals[0];
207 /* FIXME: what if entryuuid is NULL or empty ? */
209 if ( send_cookie && cookie ) {
210 ber_printf( ber, "{eOON}",
211 entry_sync_state, &entryuuid_bv, cookie );
213 ber_printf( ber, "{eON}",
214 entry_sync_state, &entryuuid_bv );
217 ctrls[num_ctrls]->ldctl_oid = LDAP_CONTROL_SYNC_STATE;
218 ctrls[num_ctrls]->ldctl_iscritical = (op->o_sync == SLAP_CONTROL_CRITICAL);
219 ret = ber_flatten2( ber, &ctrls[num_ctrls]->ldctl_value, 1 );
224 Debug( LDAP_DEBUG_TRACE,
225 "slap_build_sync_ctrl: ber_flatten2 failed\n",
227 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
234 /* Build a LDAPsync final state control */
242 struct berval *cookie,
246 BerElementBuffer berbuf;
247 BerElement *ber = (BerElement *)&berbuf;
249 ber_init2( ber, NULL, LBER_USE_DER );
250 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
252 ctrls[num_ctrls] = op->o_tmpalloc( sizeof ( LDAPControl ), op->o_tmpmemctx );
254 ber_printf( ber, "{" );
255 if ( send_cookie && cookie ) {
256 ber_printf( ber, "O", cookie );
258 if ( refreshDeletes == LDAP_SYNC_REFRESH_DELETES ) {
259 ber_printf( ber, "b", refreshDeletes );
261 ber_printf( ber, "N}" );
263 ctrls[num_ctrls]->ldctl_oid = LDAP_CONTROL_SYNC_DONE;
264 ctrls[num_ctrls]->ldctl_iscritical = (op->o_sync == SLAP_CONTROL_CRITICAL);
265 ret = ber_flatten2( ber, &ctrls[num_ctrls]->ldctl_value, 1 );
270 Debug( LDAP_DEBUG_TRACE,
271 "syncprov_done_ctrl: ber_flatten2 failed\n",
273 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
285 struct berval *cookie,
290 BerElementBuffer berbuf;
291 BerElement *ber = (BerElement *)&berbuf;
292 struct berval rspdata;
296 ber_init2( ber, NULL, LBER_USE_DER );
297 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
301 case LDAP_TAG_SYNC_NEW_COOKIE:
302 ber_printf( ber, "tO", type, cookie );
304 case LDAP_TAG_SYNC_REFRESH_DELETE:
305 case LDAP_TAG_SYNC_REFRESH_PRESENT:
306 ber_printf( ber, "t{", type );
308 ber_printf( ber, "O", cookie );
310 if ( refreshDone == 0 ) {
311 ber_printf( ber, "b", refreshDone );
313 ber_printf( ber, "N}" );
315 case LDAP_TAG_SYNC_ID_SET:
316 ber_printf( ber, "t{", type );
318 ber_printf( ber, "O", cookie );
320 if ( refreshDeletes == 1 ) {
321 ber_printf( ber, "b", refreshDeletes );
323 ber_printf( ber, "[W]", syncUUIDs );
324 ber_printf( ber, "N}" );
327 Debug( LDAP_DEBUG_TRACE,
328 "syncprov_sendinfo: invalid syncinfo type (%d)\n",
334 ret = ber_flatten2( ber, &rspdata, 0 );
337 Debug( LDAP_DEBUG_TRACE,
338 "syncprov_sendinfo: ber_flatten2 failed\n",
340 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
344 rs->sr_rspoid = LDAP_SYNC_INFO;
345 rs->sr_rspdata = &rspdata;
346 send_ldap_intermediate( op, rs );
347 rs->sr_rspdata = NULL;
353 /* Find a modtarget in an AVL tree */
355 sp_avl_cmp( const void *c1, const void *c2 )
357 const modtarget *m1, *m2;
361 rc = m1->mt_op->o_req_ndn.bv_len - m2->mt_op->o_req_ndn.bv_len;
364 return ber_bvcmp( &m1->mt_op->o_req_ndn, &m2->mt_op->o_req_ndn );
367 /* syncprov_findbase:
368 * finds the true DN of the base of a search (with alias dereferencing) and
369 * checks to make sure the base entry doesn't get replaced with a different
370 * entry (e.g., swapping trees via ModDN, or retargeting an alias). If a
371 * change is detected, any persistent search on this base must be terminated /
373 * On the first call, we just save the DN and entryID. On subsequent calls
374 * we compare the DN and entryID with the saved values.
377 findbase_cb( Operation *op, SlapReply *rs )
379 slap_callback *sc = op->o_callback;
381 if ( rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS ) {
382 fbase_cookie *fc = sc->sc_private;
384 /* If no entryID, we're looking for the first time.
385 * Just store whatever we got.
387 if ( fc->fss->s_eid == NOID ) {
389 fc->fss->s_eid = rs->sr_entry->e_id;
390 ber_dupbv( &fc->fss->s_base, &rs->sr_entry->e_nname );
392 } else if ( rs->sr_entry->e_id == fc->fss->s_eid &&
393 dn_match( &rs->sr_entry->e_nname, &fc->fss->s_base )) {
395 /* OK, the DN is the same and the entryID is the same. */
399 if ( rs->sr_err != LDAP_SUCCESS ) {
400 Debug( LDAP_DEBUG_ANY, "findbase failed! %d\n", rs->sr_err,0,0 );
405 static Filter generic_filter = { LDAP_FILTER_PRESENT, { 0 }, NULL };
406 static struct berval generic_filterstr = BER_BVC("(objectclass=*)");
409 syncprov_findbase( Operation *op, fbase_cookie *fc )
411 /* Use basic parameters from syncrepl search, but use
412 * current op's threadctx / tmpmemctx
414 ldap_pvt_thread_mutex_lock( &fc->fss->s_mutex );
415 if ( fc->fss->s_flags & PS_FIND_BASE ) {
416 slap_callback cb = {0};
418 SlapReply frs = { REP_RESULT };
421 fc->fss->s_flags ^= PS_FIND_BASE;
422 ldap_pvt_thread_mutex_unlock( &fc->fss->s_mutex );
424 fop = *fc->fss->s_op;
426 fop.o_bd = fop.o_bd->bd_self;
427 fop.o_hdr = op->o_hdr;
428 fop.o_time = op->o_time;
429 fop.o_tincr = op->o_tincr;
431 cb.sc_response = findbase_cb;
434 fop.o_sync_mode = 0; /* turn off sync mode */
435 fop.o_managedsait = SLAP_CONTROL_CRITICAL;
436 fop.o_callback = &cb;
437 fop.o_tag = LDAP_REQ_SEARCH;
438 fop.ors_scope = LDAP_SCOPE_BASE;
439 fop.ors_limit = NULL;
441 fop.ors_tlimit = SLAP_NO_LIMIT;
442 fop.ors_attrs = slap_anlist_no_attrs;
443 fop.ors_attrsonly = 1;
444 fop.ors_filter = &generic_filter;
445 fop.ors_filterstr = generic_filterstr;
447 rc = fop.o_bd->be_search( &fop, &frs );
449 ldap_pvt_thread_mutex_unlock( &fc->fss->s_mutex );
453 /* After the first call, see if the fdn resides in the scope */
454 if ( fc->fbase == 1 ) {
455 switch ( fc->fss->s_op->ors_scope ) {
456 case LDAP_SCOPE_BASE:
457 fc->fscope = dn_match( fc->fdn, &fc->fss->s_base );
459 case LDAP_SCOPE_ONELEVEL: {
461 dnParent( fc->fdn, &pdn );
462 fc->fscope = dn_match( &pdn, &fc->fss->s_base );
464 case LDAP_SCOPE_SUBTREE:
465 fc->fscope = dnIsSuffix( fc->fdn, &fc->fss->s_base );
467 case LDAP_SCOPE_SUBORDINATE:
468 fc->fscope = dnIsSuffix( fc->fdn, &fc->fss->s_base ) &&
469 !dn_match( fc->fdn, &fc->fss->s_base );
477 /* If entryID has changed, then the base of this search has
478 * changed. Invalidate the psearch.
480 return LDAP_NO_SUCH_OBJECT;
484 * This function has three different purposes, but they all use a search
485 * that filters on entryCSN so they're combined here.
486 * 1: at startup time, after a contextCSN has been read from the database,
487 * we search for all entries with CSN >= contextCSN in case the contextCSN
488 * was not checkpointed at the previous shutdown.
490 * 2: when the current contextCSN is known and we have a sync cookie, we search
491 * for one entry with CSN = the cookie CSN. If not found, try <= cookie CSN.
492 * If an entry is found, the cookie CSN is valid, otherwise it is stale.
494 * 3: during a refresh phase, we search for all entries with CSN <= the cookie
495 * CSN, and generate Present records for them. We always collect this result
496 * in SyncID sets, even if there's only one match.
498 typedef enum find_csn_t {
505 findmax_cb( Operation *op, SlapReply *rs )
507 if ( rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS ) {
508 struct berval *maxcsn = op->o_callback->sc_private;
509 Attribute *a = attr_find( rs->sr_entry->e_attrs,
510 slap_schema.si_ad_entryCSN );
512 if ( a && ber_bvcmp( &a->a_vals[0], maxcsn ) > 0 &&
513 slap_parse_csn_sid( &a->a_vals[0] ) == slap_serverID ) {
514 maxcsn->bv_len = a->a_vals[0].bv_len;
515 strcpy( maxcsn->bv_val, a->a_vals[0].bv_val );
522 findcsn_cb( Operation *op, SlapReply *rs )
524 slap_callback *sc = op->o_callback;
526 /* We just want to know that at least one exists, so it's OK if
527 * we exceed the unchecked limit.
529 if ( rs->sr_err == LDAP_ADMINLIMIT_EXCEEDED ||
530 (rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS )) {
531 sc->sc_private = (void *)1;
536 /* Build a list of entryUUIDs for sending in a SyncID set */
540 typedef struct fpres_cookie {
547 findpres_cb( Operation *op, SlapReply *rs )
549 slap_callback *sc = op->o_callback;
550 fpres_cookie *pc = sc->sc_private;
552 int ret = SLAP_CB_CONTINUE;
554 switch ( rs->sr_type ) {
556 a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_entryUUID );
558 pc->uuids[pc->num].bv_val = pc->last;
559 AC_MEMCPY( pc->uuids[pc->num].bv_val, a->a_nvals[0].bv_val,
560 pc->uuids[pc->num].bv_len );
562 pc->last = pc->uuids[pc->num].bv_val;
563 pc->uuids[pc->num].bv_val = NULL;
566 if ( pc->num != SLAP_SYNCUUID_SET_SIZE )
572 ret = syncprov_sendinfo( op, rs, LDAP_TAG_SYNC_ID_SET, NULL,
574 pc->uuids[pc->num].bv_val = pc->last;
576 pc->last = pc->uuids[0].bv_val;
586 syncprov_findcsn( Operation *op, find_csn_t mode )
588 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
589 syncprov_info_t *si = on->on_bi.bi_private;
591 slap_callback cb = {0};
593 SlapReply frs = { REP_RESULT };
594 char buf[LDAP_PVT_CSNSTR_BUFSIZE + STRLENOF("(entryCSN<=)")];
595 char cbuf[LDAP_PVT_CSNSTR_BUFSIZE];
596 struct berval maxcsn;
598 AttributeAssertion eq = ATTRIBUTEASSERTION_INIT;
599 fpres_cookie pcookie;
600 sync_control *srs = NULL;
601 struct slap_limits_set fc_limits;
602 int i, rc = LDAP_SUCCESS, findcsn_retry = 1;
605 if ( mode != FIND_MAXCSN ) {
606 srs = op->o_controls[slap_cids.sc_LDAPsync];
610 fop.o_sync_mode &= SLAP_CONTROL_MASK; /* turn off sync_mode */
611 /* We want pure entries, not referrals */
612 fop.o_managedsait = SLAP_CONTROL_CRITICAL;
615 cf.f_av_desc = slap_schema.si_ad_entryCSN;
616 BER_BVZERO( &cf.f_av_value );
619 fop.o_callback = &cb;
620 fop.ors_limit = NULL;
621 fop.ors_tlimit = SLAP_NO_LIMIT;
622 fop.ors_filter = &cf;
623 fop.ors_filterstr.bv_val = buf;
628 cf.f_choice = LDAP_FILTER_GE;
629 /* If there are multiple CSNs, use the one with our serverID */
630 for ( i=0; i<si->si_numcsns; i++) {
631 if ( slap_serverID == si->si_sids[i] ) {
636 if ( i == si->si_numcsns ) {
637 /* No match: this is multimaster, and none of the content in the DB
638 * originated locally. Treat like no CSN.
640 return LDAP_NO_SUCH_OBJECT;
642 cf.f_av_value = si->si_ctxcsn[maxid];
643 fop.ors_filterstr.bv_len = snprintf( buf, sizeof( buf ),
644 "(entryCSN>=%s)", cf.f_av_value.bv_val );
645 if ( fop.ors_filterstr.bv_len >= sizeof( buf ) ) {
648 fop.ors_attrsonly = 0;
649 fop.ors_attrs = csn_anlist;
650 fop.ors_slimit = SLAP_NO_LIMIT;
651 cb.sc_private = &maxcsn;
652 cb.sc_response = findmax_cb;
653 strcpy( cbuf, cf.f_av_value.bv_val );
654 maxcsn.bv_val = cbuf;
655 maxcsn.bv_len = cf.f_av_value.bv_len;
658 if ( BER_BVISEMPTY( &cf.f_av_value )) {
659 cf.f_av_value = srs->sr_state.ctxcsn[0];
660 /* If there are multiple CSNs, use the smallest */
661 for ( i=1; i<srs->sr_state.numcsns; i++ ) {
662 if ( ber_bvcmp( &cf.f_av_value, &srs->sr_state.ctxcsn[i] )
664 cf.f_av_value = srs->sr_state.ctxcsn[i];
668 /* Look for exact match the first time */
669 if ( findcsn_retry ) {
670 cf.f_choice = LDAP_FILTER_EQUALITY;
671 fop.ors_filterstr.bv_len = snprintf( buf, sizeof( buf ),
672 "(entryCSN=%s)", cf.f_av_value.bv_val );
673 /* On retry, look for <= */
675 cf.f_choice = LDAP_FILTER_LE;
676 fop.ors_limit = &fc_limits;
677 memset( &fc_limits, 0, sizeof( fc_limits ));
678 fc_limits.lms_s_unchecked = 1;
679 fop.ors_filterstr.bv_len = snprintf( buf, sizeof( buf ),
680 "(entryCSN<=%s)", cf.f_av_value.bv_val );
682 if ( fop.ors_filterstr.bv_len >= sizeof( buf ) ) {
685 fop.ors_attrsonly = 1;
686 fop.ors_attrs = slap_anlist_no_attrs;
688 cb.sc_private = NULL;
689 cb.sc_response = findcsn_cb;
692 fop.ors_filter = op->ors_filter;
693 fop.ors_filterstr = op->ors_filterstr;
694 fop.ors_attrsonly = 0;
695 fop.ors_attrs = uuid_anlist;
696 fop.ors_slimit = SLAP_NO_LIMIT;
697 cb.sc_private = &pcookie;
698 cb.sc_response = findpres_cb;
701 /* preallocate storage for a full set */
702 pcookie.uuids = op->o_tmpalloc( (SLAP_SYNCUUID_SET_SIZE+1) *
703 sizeof(struct berval) + SLAP_SYNCUUID_SET_SIZE * UUID_LEN,
705 pcookie.last = (char *)(pcookie.uuids + SLAP_SYNCUUID_SET_SIZE+1);
706 pcookie.uuids[0].bv_val = pcookie.last;
707 pcookie.uuids[0].bv_len = UUID_LEN;
708 for (i=1; i<SLAP_SYNCUUID_SET_SIZE; i++) {
709 pcookie.uuids[i].bv_val = pcookie.uuids[i-1].bv_val + UUID_LEN;
710 pcookie.uuids[i].bv_len = UUID_LEN;
715 fop.o_bd->bd_info = (BackendInfo *)on->on_info;
716 fop.o_bd->be_search( &fop, &frs );
717 fop.o_bd->bd_info = (BackendInfo *)on;
721 if ( ber_bvcmp( &si->si_ctxcsn[maxid], &maxcsn )) {
723 Syntax *syn = slap_schema.si_ad_contextCSN->ad_type->sat_syntax;
724 assert( !syn->ssyn_validate( syn, &maxcsn ));
726 ber_bvreplace( &si->si_ctxcsn[maxid], &maxcsn );
727 si->si_numops++; /* ensure a checkpoint */
731 /* If matching CSN was not found, invalidate the context. */
732 if ( !cb.sc_private ) {
733 /* If we didn't find an exact match, then try for <= */
734 if ( findcsn_retry ) {
738 rc = LDAP_NO_SUCH_OBJECT;
742 op->o_tmpfree( pcookie.uuids, op->o_tmpmemctx );
749 /* Should find a place to cache these */
750 static mutexint *get_mutexint()
752 mutexint *mi = ch_malloc( sizeof( mutexint ));
753 ldap_pvt_thread_mutex_init( &mi->mi_mutex );
758 static void inc_mutexint( mutexint *mi )
760 ldap_pvt_thread_mutex_lock( &mi->mi_mutex );
762 ldap_pvt_thread_mutex_unlock( &mi->mi_mutex );
765 /* return resulting counter */
766 static int dec_mutexint( mutexint *mi )
769 ldap_pvt_thread_mutex_lock( &mi->mi_mutex );
771 ldap_pvt_thread_mutex_unlock( &mi->mi_mutex );
773 ldap_pvt_thread_mutex_destroy( &mi->mi_mutex );
780 syncprov_free_syncop( syncops *so )
782 syncres *sr, *srnext;
783 GroupAssertion *ga, *gnext;
785 ldap_pvt_thread_mutex_lock( &so->s_mutex );
786 if ( --so->s_inuse > 0 ) {
787 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
790 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
791 if ( so->s_flags & PS_IS_DETACHED ) {
792 filter_free( so->s_op->ors_filter );
793 for ( ga = so->s_op->o_groups; ga; ga=gnext ) {
799 ch_free( so->s_base.bv_val );
800 for ( sr=so->s_res; sr; sr=srnext ) {
803 if ( !dec_mutexint( sr->s_e->e_private )) {
804 sr->s_e->e_private = NULL;
805 entry_free( sr->s_e );
810 ldap_pvt_thread_mutex_destroy( &so->s_mutex );
814 /* Send a persistent search response */
816 syncprov_sendresp( Operation *op, opcookie *opc, syncops *so, int mode )
818 slap_overinst *on = opc->son;
820 SlapReply rs = { REP_SEARCH };
821 LDAPControl *ctrls[2];
822 struct berval cookie = BER_BVNULL, csns[2];
824 Attribute a_uuid = {0};
826 if ( so->s_op->o_abandon )
827 return SLAPD_ABANDON;
830 if ( !BER_BVISNULL( &opc->sctxcsn )) {
831 csns[0] = opc->sctxcsn;
832 BER_BVZERO( &csns[1] );
833 slap_compose_sync_cookie( op, &cookie, csns, so->s_rid, slap_serverID ? slap_serverID : -1 );
837 if ( so->s_sid > 0 ) {
838 Debug( LDAP_DEBUG_SYNC, "syncprov_sendresp: to=%03x, cookie=%s\n",
839 so->s_sid, cookie.bv_val ? cookie.bv_val : "", 0 );
841 Debug( LDAP_DEBUG_SYNC, "syncprov_sendresp: cookie=%s\n",
842 cookie.bv_val ? cookie.bv_val : "", 0, 0 );
846 e_uuid.e_attrs = &a_uuid;
847 a_uuid.a_desc = slap_schema.si_ad_entryUUID;
848 a_uuid.a_nvals = &opc->suuid;
849 rs.sr_err = syncprov_state_ctrl( op, &rs, &e_uuid,
850 mode, ctrls, 0, 1, &cookie );
851 if ( !BER_BVISNULL( &cookie )) {
852 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
856 rs.sr_entry = &e_uuid;
857 if ( mode == LDAP_SYNC_ADD || mode == LDAP_SYNC_MODIFY ) {
859 e_uuid.e_private = NULL;
864 if ( opc->sreference && so->s_op->o_managedsait <= SLAP_CONTROL_IGNORED ) {
865 rs.sr_ref = get_entry_referrals( op, rs.sr_entry );
866 rs.sr_err = send_search_reference( op, &rs );
867 ber_bvarray_free( rs.sr_ref );
871 case LDAP_SYNC_MODIFY:
872 rs.sr_attrs = op->ors_attrs;
873 rs.sr_err = send_search_entry( op, &rs );
875 case LDAP_SYNC_DELETE:
876 e_uuid.e_attrs = NULL;
877 e_uuid.e_name = opc->sdn;
878 e_uuid.e_nname = opc->sndn;
879 if ( opc->sreference && so->s_op->o_managedsait <= SLAP_CONTROL_IGNORED ) {
880 struct berval bv = BER_BVNULL;
882 rs.sr_err = send_search_reference( op, &rs );
884 rs.sr_err = send_search_entry( op, &rs );
890 /* In case someone else freed it already? */
893 for ( i=0; rs.sr_ctrls[i]; i++ ) {
894 if ( rs.sr_ctrls[i] == ctrls[0] ) {
895 op->o_tmpfree( ctrls[0]->ldctl_value.bv_val, op->o_tmpmemctx );
896 ctrls[0]->ldctl_value.bv_val = NULL;
907 syncprov_qstart( syncops *so );
909 /* Play back queued responses */
911 syncprov_qplay( Operation *op, syncops *so )
913 slap_overinst *on = LDAP_SLIST_FIRST(&so->s_op->o_extra)->oe_key;
922 ldap_pvt_thread_mutex_lock( &so->s_mutex );
925 so->s_res = sr->s_next;
927 so->s_restail = NULL;
928 /* Exit loop with mutex held */
929 if ( !sr || so->s_op->o_abandon )
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) );
994 *op->o_hdr = *so->s_op->o_hdr;
996 op->o_tmpmemctx = slap_sl_mem_create(SLAP_SLAB_SIZE, SLAP_SLAB_STACK, ctx, 1);
997 op->o_tmpmfuncs = &slap_sl_mfuncs;
998 op->o_threadctx = ctx;
1000 /* syncprov_qplay expects a fake db */
1001 be = *so->s_op->o_bd;
1002 be.be_flags |= SLAP_DBFLAG_OVERLAY;
1004 LDAP_SLIST_FIRST(&op->o_extra) = NULL;
1005 op->o_callback = NULL;
1007 rc = syncprov_qplay( op, so );
1009 /* decrement use count... */
1010 syncprov_free_syncop( so );
1015 /* Start the task to play back queued psearch responses */
1017 syncprov_qstart( syncops *so )
1019 so->s_flags |= PS_TASK_QUEUED;
1021 ldap_pvt_thread_pool_submit( &connection_pool,
1022 syncprov_qtask, so );
1025 /* Queue a persistent search response */
1027 syncprov_qresp( opcookie *opc, syncops *so, int mode )
1031 struct berval cookie = opc->sctxcsn;
1033 if ( mode == LDAP_SYNC_NEW_COOKIE ) {
1034 syncprov_info_t *si = opc->son->on_bi.bi_private;
1036 slap_compose_sync_cookie( NULL, &cookie, si->si_ctxcsn,
1037 so->s_rid, slap_serverID ? slap_serverID : -1);
1040 srsize = sizeof(syncres) + opc->suuid.bv_len + 1 +
1041 opc->sdn.bv_len + 1 + opc->sndn.bv_len + 1;
1042 if ( cookie.bv_len )
1043 srsize += cookie.bv_len + 1;
1044 sr = ch_malloc( srsize );
1047 /* bump refcount on this entry */
1049 inc_mutexint( opc->se->e_private );
1050 sr->s_dn.bv_val = (char *)(sr + 1);
1051 sr->s_dn.bv_len = opc->sdn.bv_len;
1053 sr->s_isreference = opc->sreference;
1054 sr->s_ndn.bv_val = lutil_strcopy( sr->s_dn.bv_val,
1055 opc->sdn.bv_val ) + 1;
1056 sr->s_ndn.bv_len = opc->sndn.bv_len;
1057 sr->s_uuid.bv_val = lutil_strcopy( sr->s_ndn.bv_val,
1058 opc->sndn.bv_val ) + 1;
1059 sr->s_uuid.bv_len = opc->suuid.bv_len;
1060 AC_MEMCPY( sr->s_uuid.bv_val, opc->suuid.bv_val, opc->suuid.bv_len );
1061 if ( cookie.bv_len ) {
1062 sr->s_csn.bv_val = sr->s_uuid.bv_val + sr->s_uuid.bv_len + 1;
1063 strcpy( sr->s_csn.bv_val, cookie.bv_val );
1065 sr->s_csn.bv_val = NULL;
1067 sr->s_csn.bv_len = cookie.bv_len;
1069 if ( mode == LDAP_SYNC_NEW_COOKIE && cookie.bv_val ) {
1070 ch_free( cookie.bv_val );
1073 ldap_pvt_thread_mutex_lock( &so->s_mutex );
1077 so->s_restail->s_next = sr;
1081 /* If the base of the psearch was modified, check it next time round */
1082 if ( so->s_flags & PS_WROTE_BASE ) {
1083 so->s_flags ^= PS_WROTE_BASE;
1084 so->s_flags |= PS_FIND_BASE;
1086 if (( so->s_flags & (PS_IS_DETACHED|PS_TASK_QUEUED)) == PS_IS_DETACHED ) {
1087 syncprov_qstart( so );
1089 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
1090 return LDAP_SUCCESS;
1094 syncprov_drop_psearch( syncops *so, int lock )
1096 if ( so->s_flags & PS_IS_DETACHED ) {
1098 ldap_pvt_thread_mutex_lock( &so->s_op->o_conn->c_mutex );
1099 so->s_op->o_conn->c_n_ops_executing--;
1100 so->s_op->o_conn->c_n_ops_completed++;
1101 LDAP_STAILQ_REMOVE( &so->s_op->o_conn->c_ops, so->s_op, Operation,
1104 ldap_pvt_thread_mutex_unlock( &so->s_op->o_conn->c_mutex );
1106 syncprov_free_syncop( so );
1112 syncprov_ab_cleanup( Operation *op, SlapReply *rs )
1114 slap_callback *sc = op->o_callback;
1115 op->o_callback = sc->sc_next;
1116 syncprov_drop_psearch( op->o_callback->sc_private, 0 );
1117 op->o_tmpfree( sc, op->o_tmpmemctx );
1122 syncprov_op_abandon( Operation *op, SlapReply *rs )
1124 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1125 syncprov_info_t *si = on->on_bi.bi_private;
1126 syncops *so, *soprev;
1128 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1129 for ( so=si->si_ops, soprev = (syncops *)&si->si_ops; so;
1130 soprev=so, so=so->s_next ) {
1131 if ( so->s_op->o_connid == op->o_connid &&
1132 so->s_op->o_msgid == op->orn_msgid ) {
1133 so->s_op->o_abandon = 1;
1134 soprev->s_next = so->s_next;
1138 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1140 /* Is this really a Cancel exop? */
1141 if ( op->o_tag != LDAP_REQ_ABANDON ) {
1142 so->s_op->o_cancel = SLAP_CANCEL_ACK;
1143 rs->sr_err = LDAP_CANCELLED;
1144 send_ldap_result( so->s_op, rs );
1145 if ( so->s_flags & PS_IS_DETACHED ) {
1147 cb = op->o_tmpcalloc( 1, sizeof(slap_callback), op->o_tmpmemctx );
1148 cb->sc_cleanup = syncprov_ab_cleanup;
1149 cb->sc_next = op->o_callback;
1150 cb->sc_private = so;
1151 return SLAP_CB_CONTINUE;
1154 syncprov_drop_psearch( so, 0 );
1156 return SLAP_CB_CONTINUE;
1159 /* Find which persistent searches are affected by this operation */
1161 syncprov_matchops( Operation *op, opcookie *opc, int saveit )
1163 slap_overinst *on = opc->son;
1164 syncprov_info_t *si = on->on_bi.bi_private;
1167 syncops *ss, *sprev, *snext;
1171 struct berval newdn;
1173 BackendDB *b0 = op->o_bd, db;
1175 fc.fdn = &op->o_req_ndn;
1176 /* compute new DN */
1177 if ( op->o_tag == LDAP_REQ_MODRDN && !saveit ) {
1179 if ( op->orr_nnewSup ) pdn = *op->orr_nnewSup;
1180 else dnParent( fc.fdn, &pdn );
1181 build_new_dn( &newdn, &pdn, &op->orr_nnewrdn, op->o_tmpmemctx );
1185 if ( op->o_tag != LDAP_REQ_ADD ) {
1186 if ( !SLAP_ISOVERLAY( op->o_bd )) {
1190 rc = overlay_entry_get_ov( op, fc.fdn, NULL, NULL, 0, &e, on );
1191 /* If we're sending responses now, make a copy and unlock the DB */
1192 if ( e && !saveit ) {
1194 opc->se = entry_dup( e );
1195 opc->se->e_private = get_mutexint();
1197 overlay_entry_release_ov( op, e, 0, on );
1208 opc->se = entry_dup( e );
1209 opc->se->e_private = get_mutexint();
1215 if ( saveit || op->o_tag == LDAP_REQ_ADD ) {
1216 ber_dupbv_x( &opc->sdn, &e->e_name, op->o_tmpmemctx );
1217 ber_dupbv_x( &opc->sndn, &e->e_nname, op->o_tmpmemctx );
1218 opc->sreference = is_entry_referral( e );
1219 a = attr_find( e->e_attrs, slap_schema.si_ad_entryUUID );
1221 ber_dupbv_x( &opc->suuid, &a->a_nvals[0], op->o_tmpmemctx );
1222 } else if ( op->o_tag == LDAP_REQ_MODRDN && !saveit ) {
1223 op->o_tmpfree( opc->sndn.bv_val, op->o_tmpmemctx );
1224 op->o_tmpfree( opc->sdn.bv_val, op->o_tmpmemctx );
1225 ber_dupbv_x( &opc->sdn, &e->e_name, op->o_tmpmemctx );
1226 ber_dupbv_x( &opc->sndn, &e->e_nname, op->o_tmpmemctx );
1229 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1230 for (ss = si->si_ops, sprev = (syncops *)&si->si_ops; ss;
1231 sprev = ss, ss=snext)
1239 if ( ss->s_op->o_abandon )
1242 /* Don't send ops back to the originator */
1243 if ( opc->osid > 0 && opc->osid == ss->s_sid ) {
1244 Debug( LDAP_DEBUG_SYNC, "syncprov_matchops: skipping original sid %03x\n",
1249 /* Don't send ops back to the messenger */
1250 if ( opc->rsid > 0 && opc->rsid == ss->s_sid ) {
1251 Debug( LDAP_DEBUG_SYNC, "syncprov_matchops: skipping relayed sid %03x\n",
1261 /* If the base of the search is missing, signal a refresh */
1262 rc = syncprov_findbase( op, &fc );
1263 if ( rc != LDAP_SUCCESS ) {
1264 SlapReply rs = {REP_RESULT};
1265 send_ldap_error( ss->s_op, &rs, LDAP_SYNC_REFRESH_REQUIRED,
1266 "search base has changed" );
1267 sprev->s_next = snext;
1268 syncprov_drop_psearch( ss, 1 );
1273 /* If we're sending results now, look for this op in old matches */
1277 /* Did we modify the search base? */
1278 if ( dn_match( &op->o_req_ndn, &ss->s_base )) {
1279 ldap_pvt_thread_mutex_lock( &ss->s_mutex );
1280 ss->s_flags |= PS_WROTE_BASE;
1281 ldap_pvt_thread_mutex_unlock( &ss->s_mutex );
1284 for ( sm=opc->smatches, old=(syncmatches *)&opc->smatches; sm;
1285 old=sm, sm=sm->sm_next ) {
1286 if ( sm->sm_op == ss ) {
1288 old->sm_next = sm->sm_next;
1289 op->o_tmpfree( sm, op->o_tmpmemctx );
1296 ldap_pvt_thread_mutex_lock( &ss->s_mutex );
1299 oh.oh_conn = ss->s_op->o_conn;
1300 oh.oh_connid = ss->s_op->o_connid;
1301 op2.o_bd = op->o_bd->bd_self;
1303 op2.o_extra = op->o_extra;
1304 op2.o_callback = NULL;
1305 if (ss->s_flags & PS_FIX_FILTER) {
1306 /* Skip the AND/GE clause that we stuck on in front. We
1307 would lose deletes/mods that happen during the refresh
1308 phase otherwise (ITS#6555) */
1309 op2.ors_filter = ss->s_op->ors_filter->f_and->f_next;
1311 ldap_pvt_thread_mutex_unlock( &ss->s_mutex );
1312 rc = test_filter( &op2, e, op2.ors_filter );
1315 Debug( LDAP_DEBUG_TRACE, "syncprov_matchops: sid %03x fscope %d rc %d\n",
1316 ss->s_sid, fc.fscope, rc );
1318 /* check if current o_req_dn is in scope and matches filter */
1319 if ( fc.fscope && rc == LDAP_COMPARE_TRUE ) {
1321 sm = op->o_tmpalloc( sizeof(syncmatches), op->o_tmpmemctx );
1322 sm->sm_next = opc->smatches;
1324 ldap_pvt_thread_mutex_lock( &ss->s_mutex );
1326 ldap_pvt_thread_mutex_unlock( &ss->s_mutex );
1329 /* if found send UPDATE else send ADD */
1330 syncprov_qresp( opc, ss,
1331 found ? LDAP_SYNC_MODIFY : LDAP_SYNC_ADD );
1333 } else if ( !saveit && found ) {
1335 syncprov_qresp( opc, ss, LDAP_SYNC_DELETE );
1336 } else if ( !saveit ) {
1337 syncprov_qresp( opc, ss, LDAP_SYNC_NEW_COOKIE );
1339 if ( !saveit && found ) {
1340 /* Decrement s_inuse, was incremented when called
1341 * with saveit == TRUE
1343 syncprov_free_syncop( ss );
1346 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1348 if ( op->o_tag != LDAP_REQ_ADD && e ) {
1349 if ( !SLAP_ISOVERLAY( op->o_bd )) {
1353 overlay_entry_release_ov( op, e, 0, on );
1356 if ( opc->se && !saveit ) {
1357 if ( !dec_mutexint( opc->se->e_private )) {
1358 opc->se->e_private = NULL;
1359 entry_free( opc->se );
1364 op->o_tmpfree( fc.fdn->bv_val, op->o_tmpmemctx );
1370 syncprov_op_cleanup( Operation *op, SlapReply *rs )
1372 slap_callback *cb = op->o_callback;
1373 opcookie *opc = cb->sc_private;
1374 slap_overinst *on = opc->son;
1375 syncprov_info_t *si = on->on_bi.bi_private;
1376 syncmatches *sm, *snext;
1377 modtarget *mt, mtdummy;
1379 for (sm = opc->smatches; sm; sm=snext) {
1380 snext = sm->sm_next;
1381 syncprov_free_syncop( sm->sm_op );
1382 op->o_tmpfree( sm, op->o_tmpmemctx );
1385 /* Remove op from lock table */
1388 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
1389 mt->mt_mods = mt->mt_mods->mi_next;
1390 /* If there are more, promote the next one */
1391 if ( mt->mt_mods ) {
1392 mt->mt_op = mt->mt_mods->mi_op;
1393 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1395 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1396 ldap_pvt_thread_mutex_lock( &si->si_mods_mutex );
1397 avl_delete( &si->si_mods, mt, sp_avl_cmp );
1398 ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
1399 ldap_pvt_thread_mutex_destroy( &mt->mt_mutex );
1403 if ( !BER_BVISNULL( &opc->suuid ))
1404 op->o_tmpfree( opc->suuid.bv_val, op->o_tmpmemctx );
1405 if ( !BER_BVISNULL( &opc->sndn ))
1406 op->o_tmpfree( opc->sndn.bv_val, op->o_tmpmemctx );
1407 if ( !BER_BVISNULL( &opc->sdn ))
1408 op->o_tmpfree( opc->sdn.bv_val, op->o_tmpmemctx );
1409 op->o_callback = cb->sc_next;
1410 op->o_tmpfree(cb, op->o_tmpmemctx);
1416 syncprov_checkpoint( Operation *op, SlapReply *rs, slap_overinst *on )
1418 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
1421 SlapReply rsm = { 0 };
1422 slap_callback cb = {0};
1427 Syntax *syn = slap_schema.si_ad_contextCSN->ad_type->sat_syntax;
1430 for ( i=0; i<si->si_numcsns; i++ ) {
1431 assert( !syn->ssyn_validate( syn, si->si_ctxcsn+i ));
1434 mod.sml_numvals = si->si_numcsns;
1435 mod.sml_values = si->si_ctxcsn;
1436 mod.sml_nvalues = NULL;
1437 mod.sml_desc = slap_schema.si_ad_contextCSN;
1438 mod.sml_op = LDAP_MOD_REPLACE;
1439 mod.sml_flags = SLAP_MOD_INTERNAL;
1440 mod.sml_next = NULL;
1442 cb.sc_response = slap_null_cb;
1444 opm.o_tag = LDAP_REQ_MODIFY;
1445 opm.o_callback = &cb;
1446 opm.orm_modlist = &mod;
1447 opm.orm_no_opattrs = 1;
1448 if ( SLAP_GLUE_SUBORDINATE( op->o_bd )) {
1449 be = *on->on_info->oi_origdb;
1452 opm.o_req_dn = si->si_contextdn;
1453 opm.o_req_ndn = si->si_contextdn;
1454 bi = opm.o_bd->bd_info;
1455 opm.o_bd->bd_info = on->on_info->oi_orig;
1456 opm.o_managedsait = SLAP_CONTROL_NONCRITICAL;
1457 opm.o_no_schema_check = 1;
1458 opm.o_bd->be_modify( &opm, &rsm );
1460 if ( rsm.sr_err == LDAP_NO_SUCH_OBJECT &&
1461 SLAP_SYNC_SUBENTRY( opm.o_bd )) {
1463 char txtbuf[SLAP_TEXT_BUFLEN];
1464 size_t textlen = sizeof txtbuf;
1465 Entry *e = slap_create_context_csn_entry( opm.o_bd, NULL );
1466 slap_mods2entry( &mod, &e, 0, 1, &text, txtbuf, textlen);
1468 opm.o_bd->be_add( &opm, &rsm );
1469 if ( e == opm.ora_e )
1470 be_entry_release_w( &opm, opm.ora_e );
1472 opm.o_bd->bd_info = bi;
1474 if ( mod.sml_next != NULL ) {
1475 slap_mods_free( mod.sml_next, 1 );
1478 for ( i=0; i<si->si_numcsns; i++ ) {
1479 assert( !syn->ssyn_validate( syn, si->si_ctxcsn+i ));
1485 syncprov_add_slog( Operation *op )
1487 opcookie *opc = op->o_callback->sc_private;
1488 slap_overinst *on = opc->son;
1489 syncprov_info_t *si = on->on_bi.bi_private;
1495 /* Allocate a record. UUIDs are not NUL-terminated. */
1496 se = ch_malloc( sizeof( slog_entry ) + opc->suuid.bv_len +
1497 op->o_csn.bv_len + 1 );
1499 se->se_tag = op->o_tag;
1501 se->se_uuid.bv_val = (char *)(&se[1]);
1502 AC_MEMCPY( se->se_uuid.bv_val, opc->suuid.bv_val, opc->suuid.bv_len );
1503 se->se_uuid.bv_len = opc->suuid.bv_len;
1505 se->se_csn.bv_val = se->se_uuid.bv_val + opc->suuid.bv_len;
1506 AC_MEMCPY( se->se_csn.bv_val, op->o_csn.bv_val, op->o_csn.bv_len );
1507 se->se_csn.bv_val[op->o_csn.bv_len] = '\0';
1508 se->se_csn.bv_len = op->o_csn.bv_len;
1509 se->se_sid = slap_parse_csn_sid( &se->se_csn );
1511 ldap_pvt_thread_mutex_lock( &sl->sl_mutex );
1512 if ( sl->sl_head ) {
1513 sl->sl_tail->se_next = se;
1519 while ( sl->sl_num > sl->sl_size ) {
1521 sl->sl_head = se->se_next;
1522 strcpy( sl->sl_mincsn.bv_val, se->se_csn.bv_val );
1523 sl->sl_mincsn.bv_len = se->se_csn.bv_len;
1527 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1531 /* Just set a flag if we found the matching entry */
1533 playlog_cb( Operation *op, SlapReply *rs )
1535 if ( rs->sr_type == REP_SEARCH ) {
1536 op->o_callback->sc_private = (void *)1;
1541 /* enter with sl->sl_mutex locked, release before returning */
1543 syncprov_playlog( Operation *op, SlapReply *rs, sessionlog *sl,
1544 sync_control *srs, BerVarray ctxcsn, int numcsns, int *sids )
1546 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1548 int i, j, ndel, num, nmods, mmods;
1549 char cbuf[LDAP_PVT_CSNSTR_BUFSIZE];
1551 struct berval delcsn[2];
1553 if ( !sl->sl_num ) {
1554 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1562 uuids = op->o_tmpalloc( (num+1) * sizeof( struct berval ) +
1563 num * UUID_LEN, op->o_tmpmemctx );
1564 uuids[0].bv_val = (char *)(uuids + num + 1);
1566 delcsn[0].bv_len = 0;
1567 delcsn[0].bv_val = cbuf;
1568 BER_BVZERO(&delcsn[1]);
1570 /* Make a copy of the relevant UUIDs. Put the Deletes up front
1571 * and everything else at the end. Do this first so we can
1572 * unlock the list mutex.
1574 Debug( LDAP_DEBUG_SYNC, "srs csn %s\n",
1575 srs->sr_state.ctxcsn[0].bv_val, 0, 0 );
1576 for ( se=sl->sl_head; se; se=se->se_next ) {
1578 Debug( LDAP_DEBUG_SYNC, "log csn %s\n", se->se_csn.bv_val, 0, 0 );
1580 for ( k=0; k<srs->sr_state.numcsns; k++ ) {
1581 if ( se->se_sid == srs->sr_state.sids[k] ) {
1582 ndel = ber_bvcmp( &se->se_csn, &srs->sr_state.ctxcsn[k] );
1587 Debug( LDAP_DEBUG_SYNC, "cmp %d, too old\n", ndel, 0, 0 );
1591 for ( k=0; k<numcsns; k++ ) {
1592 if ( se->se_sid == sids[k] ) {
1593 ndel = ber_bvcmp( &se->se_csn, &ctxcsn[k] );
1598 Debug( LDAP_DEBUG_SYNC, "cmp %d, too new\n", ndel, 0, 0 );
1601 if ( se->se_tag == LDAP_REQ_DELETE ) {
1604 AC_MEMCPY( cbuf, se->se_csn.bv_val, se->se_csn.bv_len );
1605 delcsn[0].bv_len = se->se_csn.bv_len;
1606 delcsn[0].bv_val[delcsn[0].bv_len] = '\0';
1611 uuids[j].bv_val = uuids[0].bv_val + (j * UUID_LEN);
1612 AC_MEMCPY(uuids[j].bv_val, se->se_uuid.bv_val, UUID_LEN);
1613 uuids[j].bv_len = UUID_LEN;
1615 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1619 /* Zero out unused slots */
1620 for ( i=ndel; i < num - nmods; i++ )
1621 uuids[i].bv_len = 0;
1623 /* Mods must be validated to see if they belong in this delete set.
1627 /* Strip any duplicates */
1628 for ( i=0; i<nmods; i++ ) {
1629 for ( j=0; j<ndel; j++ ) {
1630 if ( bvmatch( &uuids[j], &uuids[num - 1 - i] )) {
1631 uuids[num - 1 - i].bv_len = 0;
1636 if ( uuids[num - 1 - i].bv_len == 0 ) continue;
1637 for ( j=0; j<i; j++ ) {
1638 if ( bvmatch( &uuids[num - 1 - j], &uuids[num - 1 - i] )) {
1639 uuids[num - 1 - i].bv_len = 0;
1648 SlapReply frs = { REP_RESULT };
1651 AttributeAssertion eq = ATTRIBUTEASSERTION_INIT;
1652 slap_callback cb = {0};
1656 fop.o_sync_mode = 0;
1657 fop.o_callback = &cb;
1658 fop.ors_limit = NULL;
1659 fop.ors_tlimit = SLAP_NO_LIMIT;
1660 fop.ors_attrs = slap_anlist_all_attributes;
1661 fop.ors_attrsonly = 0;
1662 fop.o_managedsait = SLAP_CONTROL_CRITICAL;
1664 af.f_choice = LDAP_FILTER_AND;
1667 mf.f_choice = LDAP_FILTER_EQUALITY;
1669 mf.f_av_desc = slap_schema.si_ad_entryUUID;
1670 mf.f_next = fop.ors_filter;
1672 fop.ors_filter = ⁡
1674 cb.sc_response = playlog_cb;
1675 fop.o_bd->bd_info = (BackendInfo *)on->on_info;
1677 for ( i=ndel; i<num; i++ ) {
1678 if ( uuids[i].bv_len == 0 ) continue;
1680 mf.f_av_value = uuids[i];
1681 cb.sc_private = NULL;
1683 frs.sr_nentries = 0;
1684 rc = fop.o_bd->be_search( &fop, &frs );
1686 /* If entry was not found, add to delete list */
1687 if ( !cb.sc_private ) {
1688 uuids[ndel++] = uuids[i];
1691 fop.o_bd->bd_info = (BackendInfo *)on;
1694 struct berval cookie;
1696 if ( delcsn[0].bv_len ) {
1697 slap_compose_sync_cookie( op, &cookie, delcsn, srs->sr_state.rid,
1698 slap_serverID ? slap_serverID : -1 );
1700 Debug( LDAP_DEBUG_SYNC, "syncprov_playlog: cookie=%s\n", cookie.bv_val, 0, 0 );
1703 uuids[ndel].bv_val = NULL;
1704 syncprov_sendinfo( op, rs, LDAP_TAG_SYNC_ID_SET,
1705 delcsn[0].bv_len ? &cookie : NULL, 0, uuids, 1 );
1706 if ( delcsn[0].bv_len ) {
1707 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
1710 op->o_tmpfree( uuids, op->o_tmpmemctx );
1714 syncprov_op_response( Operation *op, SlapReply *rs )
1716 opcookie *opc = op->o_callback->sc_private;
1717 slap_overinst *on = opc->son;
1718 syncprov_info_t *si = on->on_bi.bi_private;
1721 if ( rs->sr_err == LDAP_SUCCESS )
1723 struct berval maxcsn;
1724 char cbuf[LDAP_PVT_CSNSTR_BUFSIZE];
1725 int do_check = 0, have_psearches, foundit, csn_changed = 0;
1727 ldap_pvt_thread_mutex_lock( &si->si_resp_mutex );
1729 /* Update our context CSN */
1731 maxcsn.bv_val = cbuf;
1732 maxcsn.bv_len = sizeof(cbuf);
1733 ldap_pvt_thread_rdwr_wlock( &si->si_csn_rwlock );
1735 slap_get_commit_csn( op, &maxcsn, &foundit );
1736 if ( BER_BVISEMPTY( &maxcsn ) && SLAP_GLUE_SUBORDINATE( op->o_bd )) {
1737 /* syncrepl queues the CSN values in the db where
1738 * it is configured , not where the changes are made.
1739 * So look for a value in the glue db if we didn't
1740 * find any in this db.
1742 BackendDB *be = op->o_bd;
1743 op->o_bd = select_backend( &be->be_nsuffix[0], 1);
1744 maxcsn.bv_val = cbuf;
1745 maxcsn.bv_len = sizeof(cbuf);
1746 slap_get_commit_csn( op, &maxcsn, &foundit );
1749 if ( !BER_BVISEMPTY( &maxcsn ) ) {
1752 Syntax *syn = slap_schema.si_ad_contextCSN->ad_type->sat_syntax;
1753 assert( !syn->ssyn_validate( syn, &maxcsn ));
1755 sid = slap_parse_csn_sid( &maxcsn );
1756 for ( i=0; i<si->si_numcsns; i++ ) {
1757 if ( sid == si->si_sids[i] ) {
1758 if ( ber_bvcmp( &maxcsn, &si->si_ctxcsn[i] ) > 0 ) {
1759 ber_bvreplace( &si->si_ctxcsn[i], &maxcsn );
1765 /* It's a new SID for us */
1766 if ( i == si->si_numcsns ) {
1767 value_add_one( &si->si_ctxcsn, &maxcsn );
1770 si->si_sids = ch_realloc( si->si_sids, si->si_numcsns *
1772 si->si_sids[i] = sid;
1776 /* Don't do any processing for consumer contextCSN updates */
1777 if ( op->o_dont_replicate ) {
1778 if ( op->o_tag == LDAP_REQ_MODIFY &&
1779 op->orm_modlist->sml_op == LDAP_MOD_REPLACE &&
1780 op->orm_modlist->sml_desc == slap_schema.si_ad_contextCSN ) {
1781 /* Catch contextCSN updates from syncrepl. We have to look at
1782 * all the attribute values, as there may be more than one csn
1783 * that changed, and only one can be passed in the csn queue.
1785 Modifications *mod = op->orm_modlist;
1788 for ( i=0; i<mod->sml_numvals; i++ ) {
1789 sid = slap_parse_csn_sid( &mod->sml_values[i] );
1790 for ( j=0; j<si->si_numcsns; j++ ) {
1791 if ( sid == si->si_sids[j] ) {
1792 if ( ber_bvcmp( &mod->sml_values[i], &si->si_ctxcsn[j] ) > 0 ) {
1793 ber_bvreplace( &si->si_ctxcsn[j], &mod->sml_values[i] );
1800 if ( j == si->si_numcsns ) {
1801 value_add_one( &si->si_ctxcsn, &mod->sml_values[i] );
1803 si->si_sids = ch_realloc( si->si_sids, si->si_numcsns *
1805 si->si_sids[j] = sid;
1809 ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
1811 if ( csn_changed ) {
1812 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1813 have_psearches = ( si->si_ops != NULL );
1814 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1816 if ( have_psearches ) {
1817 for ( sm = opc->smatches; sm; sm=sm->sm_next ) {
1818 if ( sm->sm_op->s_op->o_abandon )
1820 syncprov_qresp( opc, sm->sm_op, LDAP_SYNC_NEW_COOKIE );
1825 ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
1831 if ( si->si_chkops || si->si_chktime ) {
1832 /* Never checkpoint adding the context entry,
1835 if ( op->o_tag != LDAP_REQ_ADD ||
1836 !dn_match( &op->o_req_ndn, &si->si_contextdn )) {
1837 if ( si->si_chkops && si->si_numops >= si->si_chkops ) {
1841 if ( si->si_chktime &&
1842 (op->o_time - si->si_chklast >= si->si_chktime )) {
1843 if ( si->si_chklast ) {
1845 si->si_chklast = op->o_time;
1852 ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
1855 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
1856 syncprov_checkpoint( op, rs, on );
1857 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
1860 /* only update consumer ctx if this is a newer csn */
1861 if ( csn_changed ) {
1862 opc->sctxcsn = maxcsn;
1865 /* Handle any persistent searches */
1866 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1867 have_psearches = ( si->si_ops != NULL );
1868 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1869 if ( have_psearches ) {
1872 case LDAP_REQ_MODIFY:
1873 case LDAP_REQ_MODRDN:
1874 case LDAP_REQ_EXTENDED:
1875 syncprov_matchops( op, opc, 0 );
1877 case LDAP_REQ_DELETE:
1878 /* for each match in opc->smatches:
1881 for ( sm = opc->smatches; sm; sm=sm->sm_next ) {
1882 if ( sm->sm_op->s_op->o_abandon )
1884 syncprov_qresp( opc, sm->sm_op, LDAP_SYNC_DELETE );
1890 /* Add any log records */
1891 if ( si->si_logs && op->o_tag != LDAP_REQ_ADD ) {
1892 syncprov_add_slog( op );
1894 leave: ldap_pvt_thread_mutex_unlock( &si->si_resp_mutex );
1896 return SLAP_CB_CONTINUE;
1899 /* We don't use a subentry to store the context CSN any more.
1900 * We expose the current context CSN as an operational attribute
1901 * of the suffix entry.
1904 syncprov_op_compare( Operation *op, SlapReply *rs )
1906 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1907 syncprov_info_t *si = on->on_bi.bi_private;
1908 int rc = SLAP_CB_CONTINUE;
1910 if ( dn_match( &op->o_req_ndn, &si->si_contextdn ) &&
1911 op->oq_compare.rs_ava->aa_desc == slap_schema.si_ad_contextCSN )
1916 e.e_name = si->si_contextdn;
1917 e.e_nname = si->si_contextdn;
1920 a.a_desc = slap_schema.si_ad_contextCSN;
1922 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
1924 a.a_vals = si->si_ctxcsn;
1925 a.a_nvals = a.a_vals;
1926 a.a_numvals = si->si_numcsns;
1928 rs->sr_err = access_allowed( op, &e, op->oq_compare.rs_ava->aa_desc,
1929 &op->oq_compare.rs_ava->aa_value, ACL_COMPARE, NULL );
1930 if ( ! rs->sr_err ) {
1931 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1932 goto return_results;
1935 if ( get_assert( op ) &&
1936 ( test_filter( op, &e, get_assertion( op ) ) != LDAP_COMPARE_TRUE ) )
1938 rs->sr_err = LDAP_ASSERTION_FAILED;
1939 goto return_results;
1943 rs->sr_err = LDAP_COMPARE_FALSE;
1945 if ( attr_valfind( &a,
1946 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
1947 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
1948 &op->oq_compare.rs_ava->aa_value, NULL, op->o_tmpmemctx ) == 0 )
1950 rs->sr_err = LDAP_COMPARE_TRUE;
1955 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
1957 send_ldap_result( op, rs );
1959 if( rs->sr_err == LDAP_COMPARE_FALSE || rs->sr_err == LDAP_COMPARE_TRUE ) {
1960 rs->sr_err = LDAP_SUCCESS;
1969 syncprov_op_mod( Operation *op, SlapReply *rs )
1971 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1972 syncprov_info_t *si = on->on_bi.bi_private;
1975 int have_psearches, cbsize;
1977 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1978 have_psearches = ( si->si_ops != NULL );
1979 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1981 cbsize = sizeof(slap_callback) + sizeof(opcookie) +
1982 (have_psearches ? sizeof(modinst) : 0 );
1984 cb = op->o_tmpcalloc(1, cbsize, op->o_tmpmemctx);
1985 opc = (opcookie *)(cb+1);
1987 cb->sc_response = syncprov_op_response;
1988 cb->sc_cleanup = syncprov_op_cleanup;
1989 cb->sc_private = opc;
1990 cb->sc_next = op->o_callback;
1991 op->o_callback = cb;
1995 if ( op->o_csn.bv_val ) {
1996 opc->osid = slap_parse_csn_sid( &op->o_csn );
1998 if ( op->o_controls ) {
1999 struct sync_cookie *scook =
2000 op->o_controls[slap_cids.sc_LDAPsync];
2002 opc->rsid = scook->sid;
2005 /* If there are active persistent searches, lock this operation.
2006 * See seqmod.c for the locking logic on its own.
2008 if ( have_psearches ) {
2009 modtarget *mt, mtdummy;
2012 mi = (modinst *)(opc+1);
2015 /* See if we're already modifying this entry... */
2017 ldap_pvt_thread_mutex_lock( &si->si_mods_mutex );
2018 mt = avl_find( si->si_mods, &mtdummy, sp_avl_cmp );
2020 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
2021 if ( mt->mt_mods == NULL ) {
2022 /* Cannot reuse this mt, as another thread is about
2023 * to release it in syncprov_op_cleanup.
2025 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
2030 ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
2031 mt->mt_tail->mi_next = mi;
2033 /* wait for this op to get to head of list */
2034 while ( mt->mt_mods != mi ) {
2035 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
2036 /* FIXME: if dynamic config can delete overlays or
2037 * databases we'll have to check for cleanup here.
2038 * Currently it's not an issue because there are
2039 * no dynamic config deletes...
2041 if ( slapd_shutdown )
2042 return SLAPD_ABANDON;
2044 if ( !ldap_pvt_thread_pool_pausecheck( &connection_pool ))
2045 ldap_pvt_thread_yield();
2046 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
2048 /* clean up if the caller is giving up */
2049 if ( op->o_abandon ) {
2051 for ( m2 = mt->mt_mods; m2->mi_next != mi;
2053 m2->mi_next = mi->mi_next;
2054 if ( mt->mt_tail == mi ) mt->mt_tail = m2;
2055 op->o_tmpfree( cb, op->o_tmpmemctx );
2056 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
2057 return SLAPD_ABANDON;
2060 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
2062 /* Record that we're modifying this entry now */
2063 mt = ch_malloc( sizeof(modtarget) );
2066 mt->mt_op = mi->mi_op;
2067 ldap_pvt_thread_mutex_init( &mt->mt_mutex );
2068 avl_insert( &si->si_mods, mt, sp_avl_cmp, avl_dup_error );
2069 ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
2074 if (( have_psearches || si->si_logs ) && op->o_tag != LDAP_REQ_ADD )
2075 syncprov_matchops( op, opc, 1 );
2077 return SLAP_CB_CONTINUE;
2081 syncprov_op_extended( Operation *op, SlapReply *rs )
2083 if ( exop_is_write( op ))
2084 return syncprov_op_mod( op, rs );
2086 return SLAP_CB_CONTINUE;
2089 typedef struct searchstate {
2090 slap_overinst *ss_on;
2092 BerVarray ss_ctxcsn;
2095 #define SS_PRESENT 0x01
2096 #define SS_CHANGED 0x02
2101 syncprov_search_cleanup( Operation *op, SlapReply *rs )
2103 if ( rs->sr_ctrls ) {
2104 op->o_tmpfree( rs->sr_ctrls[0], op->o_tmpmemctx );
2105 op->o_tmpfree( rs->sr_ctrls, op->o_tmpmemctx );
2106 rs->sr_ctrls = NULL;
2111 typedef struct SyncOperationBuffer {
2115 AttributeName sob_extra; /* not always present */
2116 /* Further data allocated here */
2117 } SyncOperationBuffer;
2120 syncprov_detach_op( Operation *op, syncops *so, slap_overinst *on )
2122 SyncOperationBuffer *sopbuf2;
2127 GroupAssertion *g1, *g2;
2129 /* count the search attrs */
2130 for (i=0; op->ors_attrs && !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++) {
2131 alen += op->ors_attrs[i].an_name.bv_len + 1;
2133 /* Make a new copy of the operation */
2134 size = offsetof( SyncOperationBuffer, sob_extra ) +
2135 (i ? ( (i+1) * sizeof(AttributeName) + alen) : 0) +
2136 op->o_req_dn.bv_len + 1 +
2137 op->o_req_ndn.bv_len + 1 +
2138 op->o_ndn.bv_len + 1 +
2139 so->s_filterstr.bv_len + 1;
2140 sopbuf2 = ch_calloc( 1, size );
2141 op2 = &sopbuf2->sob_op;
2142 op2->o_hdr = &sopbuf2->sob_hdr;
2143 LDAP_SLIST_FIRST(&op2->o_extra) = &sopbuf2->sob_oe;
2145 /* Copy the fields we care about explicitly, leave the rest alone */
2146 *op2->o_hdr = *op->o_hdr;
2147 op2->o_tag = op->o_tag;
2148 op2->o_time = op->o_time;
2149 op2->o_bd = on->on_info->oi_origdb;
2150 op2->o_request = op->o_request;
2151 op2->o_managedsait = op->o_managedsait;
2152 LDAP_SLIST_FIRST(&op2->o_extra)->oe_key = on;
2153 LDAP_SLIST_NEXT(LDAP_SLIST_FIRST(&op2->o_extra), oe_next) = NULL;
2155 ptr = (char *) sopbuf2 + offsetof( SyncOperationBuffer, sob_extra );
2157 op2->ors_attrs = (AttributeName *) ptr;
2158 ptr = (char *) &op2->ors_attrs[i+1];
2159 for (i=0; !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++) {
2160 op2->ors_attrs[i] = op->ors_attrs[i];
2161 op2->ors_attrs[i].an_name.bv_val = ptr;
2162 ptr = lutil_strcopy( ptr, op->ors_attrs[i].an_name.bv_val ) + 1;
2164 BER_BVZERO( &op2->ors_attrs[i].an_name );
2167 op2->o_authz = op->o_authz;
2168 op2->o_ndn.bv_val = ptr;
2169 ptr = lutil_strcopy(ptr, op->o_ndn.bv_val) + 1;
2170 op2->o_dn = op2->o_ndn;
2171 op2->o_req_dn.bv_len = op->o_req_dn.bv_len;
2172 op2->o_req_dn.bv_val = ptr;
2173 ptr = lutil_strcopy(ptr, op->o_req_dn.bv_val) + 1;
2174 op2->o_req_ndn.bv_len = op->o_req_ndn.bv_len;
2175 op2->o_req_ndn.bv_val = ptr;
2176 ptr = lutil_strcopy(ptr, op->o_req_ndn.bv_val) + 1;
2177 op2->ors_filterstr.bv_val = ptr;
2178 strcpy( ptr, so->s_filterstr.bv_val );
2179 op2->ors_filterstr.bv_len = so->s_filterstr.bv_len;
2181 /* Skip the AND/GE clause that we stuck on in front */
2182 if ( so->s_flags & PS_FIX_FILTER ) {
2183 op2->ors_filter = op->ors_filter->f_and->f_next;
2184 so->s_flags ^= PS_FIX_FILTER;
2186 op2->ors_filter = op->ors_filter;
2188 op2->ors_filter = filter_dup( op2->ors_filter, NULL );
2191 /* Copy any cached group ACLs individually */
2192 op2->o_groups = NULL;
2193 for ( g1=op->o_groups; g1; g1=g1->ga_next ) {
2194 g2 = ch_malloc( sizeof(GroupAssertion) + g1->ga_len );
2196 strcpy( g2->ga_ndn, g1->ga_ndn );
2197 g2->ga_next = op2->o_groups;
2200 /* Don't allow any further group caching */
2201 op2->o_do_not_cache = 1;
2203 /* Add op2 to conn so abandon will find us */
2204 op->o_conn->c_n_ops_executing++;
2205 op->o_conn->c_n_ops_completed--;
2206 LDAP_STAILQ_INSERT_TAIL( &op->o_conn->c_ops, op2, o_next );
2207 so->s_flags |= PS_IS_DETACHED;
2209 /* Prevent anyone else from trying to send a result for this op */
2214 syncprov_search_response( Operation *op, SlapReply *rs )
2216 searchstate *ss = op->o_callback->sc_private;
2217 slap_overinst *on = ss->ss_on;
2218 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2219 sync_control *srs = op->o_controls[slap_cids.sc_LDAPsync];
2221 if ( rs->sr_type == REP_SEARCH || rs->sr_type == REP_SEARCHREF ) {
2223 /* If we got a referral without a referral object, there's
2224 * something missing that we cannot replicate. Just ignore it.
2225 * The consumer will abort because we didn't send the expected
2228 if ( !rs->sr_entry ) {
2229 assert( rs->sr_entry != NULL );
2230 Debug( LDAP_DEBUG_ANY, "bogus referral in context\n",0,0,0 );
2231 return SLAP_CB_CONTINUE;
2233 a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_entryCSN );
2234 if ( a == NULL && rs->sr_operational_attrs != NULL ) {
2235 a = attr_find( rs->sr_operational_attrs, slap_schema.si_ad_entryCSN );
2239 sid = slap_parse_csn_sid( &a->a_nvals[0] );
2241 /* Don't send changed entries back to the originator */
2242 if ( sid == srs->sr_state.sid && srs->sr_state.numcsns ) {
2243 Debug( LDAP_DEBUG_SYNC,
2244 "Entry %s changed by peer, ignored\n",
2245 rs->sr_entry->e_name.bv_val, 0, 0 );
2246 return LDAP_SUCCESS;
2249 /* If not a persistent search */
2251 /* Make sure entry is less than the snapshot'd contextCSN */
2252 for ( i=0; i<ss->ss_numcsns; i++ ) {
2253 if ( sid == ss->ss_sids[i] && ber_bvcmp( &a->a_nvals[0],
2254 &ss->ss_ctxcsn[i] ) > 0 ) {
2255 Debug( LDAP_DEBUG_SYNC,
2256 "Entry %s CSN %s greater than snapshot %s\n",
2257 rs->sr_entry->e_name.bv_val,
2258 a->a_nvals[0].bv_val,
2259 ss->ss_ctxcsn[i].bv_val );
2260 return LDAP_SUCCESS;
2265 /* Don't send old entries twice */
2266 if ( srs->sr_state.ctxcsn ) {
2267 for ( i=0; i<srs->sr_state.numcsns; i++ ) {
2268 if ( sid == srs->sr_state.sids[i] &&
2269 ber_bvcmp( &a->a_nvals[0],
2270 &srs->sr_state.ctxcsn[i] )<= 0 ) {
2271 Debug( LDAP_DEBUG_SYNC,
2272 "Entry %s CSN %s older or equal to ctx %s\n",
2273 rs->sr_entry->e_name.bv_val,
2274 a->a_nvals[0].bv_val,
2275 srs->sr_state.ctxcsn[i].bv_val );
2276 return LDAP_SUCCESS;
2281 rs->sr_ctrls = op->o_tmpalloc( sizeof(LDAPControl *)*2,
2283 rs->sr_ctrls[1] = NULL;
2284 /* If we're in delta-sync mode, always send a cookie */
2285 if ( si->si_nopres && si->si_usehint && a ) {
2286 struct berval cookie;
2287 slap_compose_sync_cookie( op, &cookie, a->a_nvals, srs->sr_state.rid, slap_serverID ? slap_serverID : -1 );
2288 rs->sr_err = syncprov_state_ctrl( op, rs, rs->sr_entry,
2289 LDAP_SYNC_ADD, rs->sr_ctrls, 0, 1, &cookie );
2291 rs->sr_err = syncprov_state_ctrl( op, rs, rs->sr_entry,
2292 LDAP_SYNC_ADD, rs->sr_ctrls, 0, 0, NULL );
2294 } else if ( rs->sr_type == REP_RESULT && rs->sr_err == LDAP_SUCCESS ) {
2295 struct berval cookie = BER_BVNULL;
2297 if ( ( ss->ss_flags & SS_CHANGED ) &&
2298 ss->ss_ctxcsn && !BER_BVISNULL( &ss->ss_ctxcsn[0] )) {
2299 slap_compose_sync_cookie( op, &cookie, ss->ss_ctxcsn,
2300 srs->sr_state.rid, slap_serverID ? slap_serverID : -1 );
2302 Debug( LDAP_DEBUG_SYNC, "syncprov_search_response: cookie=%s\n", cookie.bv_val, 0, 0 );
2305 /* Is this a regular refresh?
2306 * Note: refresh never gets here if there were no changes
2309 rs->sr_ctrls = op->o_tmpalloc( sizeof(LDAPControl *)*2,
2311 rs->sr_ctrls[1] = NULL;
2312 rs->sr_err = syncprov_done_ctrl( op, rs, rs->sr_ctrls,
2313 0, 1, &cookie, ( ss->ss_flags & SS_PRESENT ) ? LDAP_SYNC_REFRESH_PRESENTS :
2314 LDAP_SYNC_REFRESH_DELETES );
2315 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
2317 /* It's RefreshAndPersist, transition to Persist phase */
2318 syncprov_sendinfo( op, rs, ( ss->ss_flags & SS_PRESENT ) ?
2319 LDAP_TAG_SYNC_REFRESH_PRESENT : LDAP_TAG_SYNC_REFRESH_DELETE,
2320 ( ss->ss_flags & SS_CHANGED ) ? &cookie : NULL,
2322 if ( !BER_BVISNULL( &cookie ))
2323 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
2325 /* Detach this Op from frontend control */
2326 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
2328 /* But not if this connection was closed along the way */
2329 if ( op->o_abandon ) {
2330 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
2331 /* syncprov_ab_cleanup will free this syncop */
2332 return SLAPD_ABANDON;
2335 ldap_pvt_thread_mutex_lock( &ss->ss_so->s_mutex );
2336 /* Turn off the refreshing flag */
2337 ss->ss_so->s_flags ^= PS_IS_REFRESHING;
2339 syncprov_detach_op( op, ss->ss_so, on );
2341 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
2343 /* If there are queued responses, fire them off */
2344 if ( ss->ss_so->s_res )
2345 syncprov_qstart( ss->ss_so );
2346 ldap_pvt_thread_mutex_unlock( &ss->ss_so->s_mutex );
2349 return LDAP_SUCCESS;
2353 return SLAP_CB_CONTINUE;
2357 syncprov_op_search( Operation *op, SlapReply *rs )
2359 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
2360 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2362 int gotstate = 0, changed = 0, do_present = 0;
2363 syncops *sop = NULL;
2367 int i, *sids, numcsns;
2368 struct berval mincsn;
2370 if ( !(op->o_sync_mode & SLAP_SYNC_REFRESH) ) return SLAP_CB_CONTINUE;
2372 if ( op->ors_deref & LDAP_DEREF_SEARCHING ) {
2373 send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR, "illegal value for derefAliases" );
2377 srs = op->o_controls[slap_cids.sc_LDAPsync];
2379 /* If this is a persistent search, set it up right away */
2380 if ( op->o_sync_mode & SLAP_SYNC_PERSIST ) {
2390 so.s_flags = PS_IS_REFRESHING | PS_FIND_BASE;
2391 /* syncprov_findbase expects to be called as a callback... */
2392 sc.sc_private = &opc;
2394 ldap_pvt_thread_mutex_init( &so.s_mutex );
2395 cb = op->o_callback;
2396 op->o_callback = ≻
2397 rs->sr_err = syncprov_findbase( op, &fc );
2398 op->o_callback = cb;
2399 ldap_pvt_thread_mutex_destroy( &so.s_mutex );
2401 if ( rs->sr_err != LDAP_SUCCESS ) {
2402 send_ldap_result( op, rs );
2405 sop = ch_malloc( sizeof( syncops ));
2407 ldap_pvt_thread_mutex_init( &sop->s_mutex );
2408 sop->s_rid = srs->sr_state.rid;
2409 sop->s_sid = srs->sr_state.sid;
2412 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
2413 sop->s_next = si->si_ops;
2415 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
2418 /* snapshot the ctxcsn */
2419 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
2420 numcsns = si->si_numcsns;
2422 ber_bvarray_dup_x( &ctxcsn, si->si_ctxcsn, op->o_tmpmemctx );
2423 sids = op->o_tmpalloc( numcsns * sizeof(int), op->o_tmpmemctx );
2424 for ( i=0; i<numcsns; i++ )
2425 sids[i] = si->si_sids[i];
2430 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
2432 /* If we have a cookie, handle the PRESENT lookups */
2433 if ( srs->sr_state.ctxcsn ) {
2437 /* If we don't have any CSN of our own yet, pretend nothing
2443 if ( !si->si_nopres )
2444 do_present = SS_PRESENT;
2446 /* If there are SIDs we don't recognize in the cookie, drop them */
2447 for (i=0; i<srs->sr_state.numcsns; ) {
2448 for (j=0; j<numcsns; j++) {
2449 if ( srs->sr_state.sids[i] == sids[j] ) {
2454 if ( j == numcsns ) {
2455 struct berval tmp = srs->sr_state.ctxcsn[i];
2456 j = srs->sr_state.numcsns - 1;
2457 srs->sr_state.ctxcsn[i] = srs->sr_state.ctxcsn[j];
2459 srs->sr_state.ctxcsn[j] = tmp;
2460 srs->sr_state.numcsns = j;
2461 srs->sr_state.sids[i] = srs->sr_state.sids[j];
2467 /* Find the smallest CSN */
2468 mincsn = srs->sr_state.ctxcsn[0];
2469 for ( i=1; i<srs->sr_state.numcsns; i++ ) {
2470 if ( ber_bvcmp( &mincsn, &srs->sr_state.ctxcsn[i] ) > 0 )
2471 mincsn = srs->sr_state.ctxcsn[i];
2474 /* If nothing has changed, shortcut it */
2475 if ( srs->sr_state.numcsns == numcsns ) {
2477 for ( i=0; i<srs->sr_state.numcsns; i++ ) {
2478 for ( j=0; j<numcsns; j++ ) {
2479 if ( srs->sr_state.sids[i] != sids[j] )
2481 newer = ber_bvcmp( &srs->sr_state.ctxcsn[i], &ctxcsn[j] );
2482 /* If our state is newer, tell consumer about changes */
2484 changed = SS_CHANGED;
2485 else if ( newer > 0 ) {
2486 /* our state is older, complain to consumer */
2487 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
2488 rs->sr_text = "consumer state is newer than provider!";
2491 syncops **sp = &si->si_ops;
2493 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
2494 while ( *sp != sop )
2495 sp = &(*sp)->s_next;
2497 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
2500 rs->sr_ctrls = NULL;
2501 send_ldap_result( op, rs );
2511 no_change: if ( !(op->o_sync_mode & SLAP_SYNC_PERSIST) ) {
2512 LDAPControl *ctrls[2];
2516 syncprov_done_ctrl( op, rs, ctrls, 0, 0,
2517 NULL, LDAP_SYNC_REFRESH_DELETES );
2518 rs->sr_ctrls = ctrls;
2519 rs->sr_err = LDAP_SUCCESS;
2520 send_ldap_result( op, rs );
2521 rs->sr_ctrls = NULL;
2527 /* consumer doesn't have the right number of CSNs */
2528 changed = SS_CHANGED;
2530 /* Do we have a sessionlog for this search? */
2533 ldap_pvt_thread_mutex_lock( &sl->sl_mutex );
2534 /* Are there any log entries, and is the consumer state
2535 * present in the session log?
2537 if ( sl->sl_num > 0 && ber_bvcmp( &mincsn, &sl->sl_mincsn ) >= 0 ) {
2539 /* mutex is unlocked in playlog */
2540 syncprov_playlog( op, rs, sl, srs, ctxcsn, numcsns, sids );
2542 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
2545 /* Is the CSN still present in the database? */
2546 if ( syncprov_findcsn( op, FIND_CSN ) != LDAP_SUCCESS ) {
2547 /* No, so a reload is required */
2548 /* the 2.2 consumer doesn't send this hint */
2549 if ( si->si_usehint && srs->sr_rhint == 0 ) {
2551 ber_bvarray_free_x( ctxcsn, op->o_tmpmemctx );
2553 op->o_tmpfree( sids, op->o_tmpmemctx );
2554 rs->sr_err = LDAP_SYNC_REFRESH_REQUIRED;
2555 rs->sr_text = "sync cookie is stale";
2558 if ( srs->sr_state.ctxcsn ) {
2559 ber_bvarray_free_x( srs->sr_state.ctxcsn, op->o_tmpmemctx );
2560 srs->sr_state.ctxcsn = NULL;
2562 if ( srs->sr_state.sids ) {
2563 slap_sl_free( srs->sr_state.sids, op->o_tmpmemctx );
2564 srs->sr_state.sids = NULL;
2566 srs->sr_state.numcsns = 0;
2569 /* If changed and doing Present lookup, send Present UUIDs */
2570 if ( do_present && syncprov_findcsn( op, FIND_PRESENT ) !=
2573 ber_bvarray_free_x( ctxcsn, op->o_tmpmemctx );
2575 op->o_tmpfree( sids, op->o_tmpmemctx );
2580 /* No consumer state, assume something has changed */
2581 changed = SS_CHANGED;
2585 /* Append CSN range to search filter, save original filter
2586 * for persistent search evaluation
2589 sop->s_filterstr= op->ors_filterstr;
2592 /* If something changed, find the changes */
2593 if ( gotstate && changed ) {
2594 Filter *fand, *fava;
2596 fand = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
2597 fand->f_choice = LDAP_FILTER_AND;
2598 fand->f_next = NULL;
2599 fava = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
2601 fava->f_choice = LDAP_FILTER_GE;
2602 fava->f_ava = op->o_tmpalloc( sizeof(AttributeAssertion), op->o_tmpmemctx );
2603 fava->f_ava->aa_desc = slap_schema.si_ad_entryCSN;
2604 #ifdef LDAP_COMP_MATCH
2605 fava->f_ava->aa_cf = NULL;
2607 ber_dupbv_x( &fava->f_ava->aa_value, &mincsn, op->o_tmpmemctx );
2608 fava->f_next = op->ors_filter;
2610 ldap_pvt_thread_mutex_lock( &sop->s_mutex );
2611 op->ors_filter = fand;
2612 filter2bv_x( op, op->ors_filter, &op->ors_filterstr );
2614 sop->s_flags |= PS_FIX_FILTER;
2615 ldap_pvt_thread_mutex_unlock( &sop->s_mutex );
2619 /* Let our callback add needed info to returned entries */
2620 cb = op->o_tmpcalloc(1, sizeof(slap_callback)+sizeof(searchstate), op->o_tmpmemctx);
2621 ss = (searchstate *)(cb+1);
2624 ss->ss_flags = do_present | changed;
2625 ss->ss_ctxcsn = ctxcsn;
2626 ss->ss_numcsns = numcsns;
2628 cb->sc_response = syncprov_search_response;
2629 cb->sc_cleanup = syncprov_search_cleanup;
2630 cb->sc_private = ss;
2631 cb->sc_next = op->o_callback;
2632 op->o_callback = cb;
2634 /* If this is a persistent search and no changes were reported during
2635 * the refresh phase, just invoke the response callback to transition
2636 * us into persist phase
2639 rs->sr_err = LDAP_SUCCESS;
2640 rs->sr_nentries = 0;
2641 send_ldap_result( op, rs );
2644 return SLAP_CB_CONTINUE;
2648 syncprov_operational(
2652 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
2653 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2655 /* This prevents generating unnecessarily; frontend will strip
2656 * any statically stored copy.
2658 if ( op->o_sync != SLAP_CONTROL_NONE )
2659 return SLAP_CB_CONTINUE;
2661 if ( rs->sr_entry &&
2662 dn_match( &rs->sr_entry->e_nname, &si->si_contextdn )) {
2664 if ( SLAP_OPATTRS( rs->sr_attr_flags ) ||
2665 ad_inlist( slap_schema.si_ad_contextCSN, rs->sr_attrs )) {
2666 Attribute *a, **ap = NULL;
2668 for ( a=rs->sr_entry->e_attrs; a; a=a->a_next ) {
2669 if ( a->a_desc == slap_schema.si_ad_contextCSN )
2673 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
2674 if ( si->si_ctxcsn ) {
2676 for ( ap = &rs->sr_operational_attrs; *ap;
2677 ap=&(*ap)->a_next );
2679 a = attr_alloc( slap_schema.si_ad_contextCSN );
2684 if ( !(rs->sr_flags & REP_ENTRY_MODIFIABLE) ) {
2685 Entry *e = entry_dup( rs->sr_entry );
2686 if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
2687 overlay_entry_release_ov( op, rs->sr_entry, 0, on );
2688 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
2689 } else if ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) {
2690 entry_free( rs->sr_entry );
2694 REP_ENTRY_MODIFIABLE|REP_ENTRY_MUSTBEFREED;
2695 a = attr_find( rs->sr_entry->e_attrs,
2696 slap_schema.si_ad_contextCSN );
2698 if ( a->a_nvals != a->a_vals ) {
2699 ber_bvarray_free( a->a_nvals );
2702 ber_bvarray_free( a->a_vals );
2706 attr_valadd( a, si->si_ctxcsn, si->si_ctxcsn, si->si_numcsns );
2708 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
2711 return SLAP_CB_CONTINUE;
2721 static ConfigDriver sp_cf_gen;
2723 static ConfigTable spcfg[] = {
2724 { "syncprov-checkpoint", "ops> <minutes", 3, 3, 0, ARG_MAGIC|SP_CHKPT,
2725 sp_cf_gen, "( OLcfgOvAt:1.1 NAME 'olcSpCheckpoint' "
2726 "DESC 'ContextCSN checkpoint interval in ops and minutes' "
2727 "SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
2728 { "syncprov-sessionlog", "ops", 2, 2, 0, ARG_INT|ARG_MAGIC|SP_SESSL,
2729 sp_cf_gen, "( OLcfgOvAt:1.2 NAME 'olcSpSessionlog' "
2730 "DESC 'Session log size in ops' "
2731 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
2732 { "syncprov-nopresent", NULL, 2, 2, 0, ARG_ON_OFF|ARG_MAGIC|SP_NOPRES,
2733 sp_cf_gen, "( OLcfgOvAt:1.3 NAME 'olcSpNoPresent' "
2734 "DESC 'Omit Present phase processing' "
2735 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
2736 { "syncprov-reloadhint", NULL, 2, 2, 0, ARG_ON_OFF|ARG_MAGIC|SP_USEHINT,
2737 sp_cf_gen, "( OLcfgOvAt:1.4 NAME 'olcSpReloadHint' "
2738 "DESC 'Observe Reload Hint in Request control' "
2739 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
2740 { NULL, NULL, 0, 0, 0, ARG_IGNORED }
2743 static ConfigOCs spocs[] = {
2744 { "( OLcfgOvOc:1.1 "
2745 "NAME 'olcSyncProvConfig' "
2746 "DESC 'SyncRepl Provider configuration' "
2747 "SUP olcOverlayConfig "
2748 "MAY ( olcSpCheckpoint "
2749 "$ olcSpSessionlog "
2751 "$ olcSpReloadHint "
2753 Cft_Overlay, spcfg },
2758 sp_cf_gen(ConfigArgs *c)
2760 slap_overinst *on = (slap_overinst *)c->bi;
2761 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2764 if ( c->op == SLAP_CONFIG_EMIT ) {
2765 switch ( c->type ) {
2767 if ( si->si_chkops || si->si_chktime ) {
2769 /* we assume si_chktime is a multiple of 60
2770 * because the parsed value was originally
2771 * multiplied by 60 */
2772 bv.bv_len = snprintf( c->cr_msg, sizeof( c->cr_msg ),
2773 "%d %d", si->si_chkops, si->si_chktime/60 );
2774 if ( bv.bv_len >= sizeof( c->cr_msg ) ) {
2777 bv.bv_val = c->cr_msg;
2778 value_add_one( &c->rvalue_vals, &bv );
2785 if ( si->si_logs ) {
2786 c->value_int = si->si_logs->sl_size;
2792 if ( si->si_nopres ) {
2799 if ( si->si_usehint ) {
2807 } else if ( c->op == LDAP_MOD_DELETE ) {
2808 switch ( c->type ) {
2815 si->si_logs->sl_size = 0;
2817 rc = LDAP_NO_SUCH_ATTRIBUTE;
2820 if ( si->si_nopres )
2823 rc = LDAP_NO_SUCH_ATTRIBUTE;
2826 if ( si->si_usehint )
2829 rc = LDAP_NO_SUCH_ATTRIBUTE;
2834 switch ( c->type ) {
2836 if ( lutil_atoi( &si->si_chkops, c->argv[1] ) != 0 ) {
2837 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s unable to parse checkpoint ops # \"%s\"",
2838 c->argv[0], c->argv[1] );
2839 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2840 "%s: %s\n", c->log, c->cr_msg, 0 );
2841 return ARG_BAD_CONF;
2843 if ( si->si_chkops <= 0 ) {
2844 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s invalid checkpoint ops # \"%d\"",
2845 c->argv[0], si->si_chkops );
2846 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2847 "%s: %s\n", c->log, c->cr_msg, 0 );
2848 return ARG_BAD_CONF;
2850 if ( lutil_atoi( &si->si_chktime, c->argv[2] ) != 0 ) {
2851 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s unable to parse checkpoint time \"%s\"",
2852 c->argv[0], c->argv[1] );
2853 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2854 "%s: %s\n", c->log, c->cr_msg, 0 );
2855 return ARG_BAD_CONF;
2857 if ( si->si_chktime <= 0 ) {
2858 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s invalid checkpoint time \"%d\"",
2859 c->argv[0], si->si_chkops );
2860 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2861 "%s: %s\n", c->log, c->cr_msg, 0 );
2862 return ARG_BAD_CONF;
2864 si->si_chktime *= 60;
2868 int size = c->value_int;
2871 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s size %d is negative",
2873 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2874 "%s: %s\n", c->log, c->cr_msg, 0 );
2875 return ARG_BAD_CONF;
2879 sl = ch_malloc( sizeof( sessionlog ) + LDAP_PVT_CSNSTR_BUFSIZE );
2880 sl->sl_mincsn.bv_val = (char *)(sl+1);
2881 sl->sl_mincsn.bv_len = 0;
2883 sl->sl_head = sl->sl_tail = NULL;
2884 ldap_pvt_thread_mutex_init( &sl->sl_mutex );
2891 si->si_nopres = c->value_int;
2894 si->si_usehint = c->value_int;
2900 /* ITS#3456 we cannot run this search on the main thread, must use a
2901 * child thread in order to insure we have a big enough stack.
2908 syncprov_findcsn( ptr, FIND_MAXCSN );
2912 /* Read any existing contextCSN from the underlying db.
2913 * Then search for any entries newer than that. If no value exists,
2914 * just generate it. Cache whatever result.
2922 slap_overinst *on = (slap_overinst *) be->bd_info;
2923 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2925 Connection conn = { 0 };
2926 OperationBuffer opbuf;
2931 void *thrctx = NULL;
2933 if ( !SLAP_LASTMOD( be )) {
2934 Debug( LDAP_DEBUG_ANY,
2935 "syncprov_db_open: invalid config, lastmod must be enabled\n", 0, 0, 0 );
2939 if ( slapMode & SLAP_TOOL_MODE ) {
2943 rc = overlay_register_control( be, LDAP_CONTROL_SYNC );
2948 thrctx = ldap_pvt_thread_pool_context();
2949 connection_fake_init2( &conn, &opbuf, thrctx, 0 );
2952 op->o_dn = be->be_rootdn;
2953 op->o_ndn = be->be_rootndn;
2955 if ( SLAP_SYNC_SUBENTRY( be )) {
2956 build_new_dn( &si->si_contextdn, be->be_nsuffix,
2957 (struct berval *)&slap_ldapsync_cn_bv, NULL );
2959 si->si_contextdn = be->be_nsuffix[0];
2961 rc = overlay_entry_get_ov( op, &si->si_contextdn, NULL,
2962 slap_schema.si_ad_contextCSN, 0, &e, on );
2965 ldap_pvt_thread_t tid;
2967 a = attr_find( e->e_attrs, slap_schema.si_ad_contextCSN );
2969 ber_bvarray_dup_x( &si->si_ctxcsn, a->a_vals, NULL );
2970 si->si_numcsns = a->a_numvals;
2971 si->si_sids = slap_parse_csn_sids( si->si_ctxcsn, a->a_numvals, NULL );
2973 overlay_entry_release_ov( op, e, 0, on );
2974 if ( si->si_ctxcsn && !SLAP_DBCLEAN( be )) {
2975 op->o_req_dn = be->be_suffix[0];
2976 op->o_req_ndn = be->be_nsuffix[0];
2977 op->ors_scope = LDAP_SCOPE_SUBTREE;
2978 ldap_pvt_thread_create( &tid, 0, syncprov_db_otask, op );
2979 ldap_pvt_thread_join( tid, NULL );
2983 /* Didn't find a contextCSN, should we generate one? */
2984 if ( !si->si_ctxcsn ) {
2985 char csnbuf[ LDAP_PVT_CSNSTR_BUFSIZE ];
2988 if ( SLAP_SYNC_SHADOW( op->o_bd )) {
2989 /* If we're also a consumer, then don't generate anything.
2990 * Wait for our provider to send it to us, or for a local
2991 * modify if we have multimaster.
2995 csn.bv_val = csnbuf;
2996 csn.bv_len = sizeof( csnbuf );
2997 slap_get_csn( op, &csn, 0 );
2998 value_add_one( &si->si_ctxcsn, &csn );
3000 si->si_sids = ch_malloc( sizeof(int) );
3001 si->si_sids[0] = slap_serverID;
3003 /* make sure we do a checkpoint on close */
3008 op->o_bd->bd_info = (BackendInfo *)on;
3012 /* Write the current contextCSN into the underlying db.
3020 slap_overinst *on = (slap_overinst *) be->bd_info;
3021 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
3023 if ( slapMode & SLAP_TOOL_MODE ) {
3026 if ( si->si_numops ) {
3027 Connection conn = {0};
3028 OperationBuffer opbuf;
3030 SlapReply rs = {REP_RESULT};
3033 thrctx = ldap_pvt_thread_pool_context();
3034 connection_fake_init2( &conn, &opbuf, thrctx, 0 );
3037 op->o_dn = be->be_rootdn;
3038 op->o_ndn = be->be_rootndn;
3039 syncprov_checkpoint( op, &rs, on );
3051 slap_overinst *on = (slap_overinst *)be->bd_info;
3052 syncprov_info_t *si;
3054 if ( SLAP_ISGLOBALOVERLAY( be ) ) {
3055 Debug( LDAP_DEBUG_ANY,
3056 "syncprov must be instantiated within a database.\n",
3061 si = ch_calloc(1, sizeof(syncprov_info_t));
3062 on->on_bi.bi_private = si;
3063 ldap_pvt_thread_rdwr_init( &si->si_csn_rwlock );
3064 ldap_pvt_thread_mutex_init( &si->si_ops_mutex );
3065 ldap_pvt_thread_mutex_init( &si->si_mods_mutex );
3066 ldap_pvt_thread_mutex_init( &si->si_resp_mutex );
3068 csn_anlist[0].an_desc = slap_schema.si_ad_entryCSN;
3069 csn_anlist[0].an_name = slap_schema.si_ad_entryCSN->ad_cname;
3070 csn_anlist[1].an_desc = slap_schema.si_ad_entryUUID;
3071 csn_anlist[1].an_name = slap_schema.si_ad_entryUUID->ad_cname;
3073 uuid_anlist[0].an_desc = slap_schema.si_ad_entryUUID;
3074 uuid_anlist[0].an_name = slap_schema.si_ad_entryUUID->ad_cname;
3080 syncprov_db_destroy(
3085 slap_overinst *on = (slap_overinst *)be->bd_info;
3086 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
3089 if ( si->si_logs ) {
3090 slog_entry *se = si->si_logs->sl_head;
3093 slog_entry *se_next = se->se_next;
3098 ch_free( si->si_logs );
3100 if ( si->si_ctxcsn )
3101 ber_bvarray_free( si->si_ctxcsn );
3103 ch_free( si->si_sids );
3104 ldap_pvt_thread_mutex_destroy( &si->si_resp_mutex );
3105 ldap_pvt_thread_mutex_destroy( &si->si_mods_mutex );
3106 ldap_pvt_thread_mutex_destroy( &si->si_ops_mutex );
3107 ldap_pvt_thread_rdwr_destroy( &si->si_csn_rwlock );
3114 static int syncprov_parseCtrl (
3120 BerElementBuffer berbuf;
3121 BerElement *ber = (BerElement *)&berbuf;
3124 struct berval cookie = BER_BVNULL;
3128 if ( op->o_sync != SLAP_CONTROL_NONE ) {
3129 rs->sr_text = "Sync control specified multiple times";
3130 return LDAP_PROTOCOL_ERROR;
3133 if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
3134 rs->sr_text = "Sync control specified with pagedResults control";
3135 return LDAP_PROTOCOL_ERROR;
3138 if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
3139 rs->sr_text = "Sync control value is absent";
3140 return LDAP_PROTOCOL_ERROR;
3143 if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
3144 rs->sr_text = "Sync control value is empty";
3145 return LDAP_PROTOCOL_ERROR;
3148 /* Parse the control value
3149 * syncRequestValue ::= SEQUENCE {
3154 * refreshAndPersist (3)
3156 * cookie syncCookie OPTIONAL
3160 ber_init2( ber, &ctrl->ldctl_value, 0 );
3162 if ( (tag = ber_scanf( ber, "{i" /*}*/, &mode )) == LBER_ERROR ) {
3163 rs->sr_text = "Sync control : mode decoding error";
3164 return LDAP_PROTOCOL_ERROR;
3168 case LDAP_SYNC_REFRESH_ONLY:
3169 mode = SLAP_SYNC_REFRESH;
3171 case LDAP_SYNC_REFRESH_AND_PERSIST:
3172 mode = SLAP_SYNC_REFRESH_AND_PERSIST;
3175 rs->sr_text = "Sync control : unknown update mode";
3176 return LDAP_PROTOCOL_ERROR;
3179 tag = ber_peek_tag( ber, &len );
3181 if ( tag == LDAP_TAG_SYNC_COOKIE ) {
3182 if (( ber_scanf( ber, /*{*/ "m", &cookie )) == LBER_ERROR ) {
3183 rs->sr_text = "Sync control : cookie decoding error";
3184 return LDAP_PROTOCOL_ERROR;
3186 tag = ber_peek_tag( ber, &len );
3188 if ( tag == LDAP_TAG_RELOAD_HINT ) {
3189 if (( ber_scanf( ber, /*{*/ "b", &rhint )) == LBER_ERROR ) {
3190 rs->sr_text = "Sync control : rhint decoding error";
3191 return LDAP_PROTOCOL_ERROR;
3194 if (( ber_scanf( ber, /*{*/ "}")) == LBER_ERROR ) {
3195 rs->sr_text = "Sync control : decoding error";
3196 return LDAP_PROTOCOL_ERROR;
3198 sr = op->o_tmpcalloc( 1, sizeof(struct sync_control), op->o_tmpmemctx );
3199 sr->sr_rhint = rhint;
3200 if (!BER_BVISNULL(&cookie)) {
3201 ber_dupbv_x( &sr->sr_state.octet_str, &cookie, op->o_tmpmemctx );
3202 /* If parse fails, pretend no cookie was sent */
3203 if ( slap_parse_sync_cookie( &sr->sr_state, op->o_tmpmemctx ) ||
3204 sr->sr_state.rid == -1 ) {
3205 if ( sr->sr_state.ctxcsn ) {
3206 ber_bvarray_free_x( sr->sr_state.ctxcsn, op->o_tmpmemctx );
3207 sr->sr_state.ctxcsn = NULL;
3209 sr->sr_state.numcsns = 0;
3213 op->o_controls[slap_cids.sc_LDAPsync] = sr;
3215 op->o_sync = ctrl->ldctl_iscritical
3216 ? SLAP_CONTROL_CRITICAL
3217 : SLAP_CONTROL_NONCRITICAL;
3219 op->o_sync_mode |= mode; /* o_sync_mode shares o_sync */
3221 return LDAP_SUCCESS;
3224 /* This overlay is set up for dynamic loading via moduleload. For static
3225 * configuration, you'll need to arrange for the slap_overinst to be
3226 * initialized and registered by some other function inside slapd.
3229 static slap_overinst syncprov;
3232 syncprov_initialize()
3236 rc = register_supported_control( LDAP_CONTROL_SYNC,
3237 SLAP_CTRL_SEARCH, NULL,
3238 syncprov_parseCtrl, &slap_cids.sc_LDAPsync );
3239 if ( rc != LDAP_SUCCESS ) {
3240 Debug( LDAP_DEBUG_ANY,
3241 "syncprov_init: Failed to register control %d\n", rc, 0, 0 );
3245 syncprov.on_bi.bi_type = "syncprov";
3246 syncprov.on_bi.bi_db_init = syncprov_db_init;
3247 syncprov.on_bi.bi_db_destroy = syncprov_db_destroy;
3248 syncprov.on_bi.bi_db_open = syncprov_db_open;
3249 syncprov.on_bi.bi_db_close = syncprov_db_close;
3251 syncprov.on_bi.bi_op_abandon = syncprov_op_abandon;
3252 syncprov.on_bi.bi_op_cancel = syncprov_op_abandon;
3254 syncprov.on_bi.bi_op_add = syncprov_op_mod;
3255 syncprov.on_bi.bi_op_compare = syncprov_op_compare;
3256 syncprov.on_bi.bi_op_delete = syncprov_op_mod;
3257 syncprov.on_bi.bi_op_modify = syncprov_op_mod;
3258 syncprov.on_bi.bi_op_modrdn = syncprov_op_mod;
3259 syncprov.on_bi.bi_op_search = syncprov_op_search;
3260 syncprov.on_bi.bi_extended = syncprov_op_extended;
3261 syncprov.on_bi.bi_operational = syncprov_operational;
3263 syncprov.on_bi.bi_cf_ocs = spocs;
3265 generic_filter.f_desc = slap_schema.si_ad_objectClass;
3267 rc = config_register_schema( spcfg, spocs );
3268 if ( rc ) return rc;
3270 return overlay_register( &syncprov );
3273 #if SLAPD_OVER_SYNCPROV == SLAPD_MOD_DYNAMIC
3275 init_module( int argc, char *argv[] )
3277 return syncprov_initialize();
3279 #endif /* SLAPD_OVER_SYNCPROV == SLAPD_MOD_DYNAMIC */
3281 #endif /* defined(SLAPD_OVER_SYNCPROV) */