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 int si_active; /* True if there are active mods */
137 time_t si_chklast; /* time of last checkpoint */
138 Avlnode *si_mods; /* entries being modified */
140 ldap_pvt_thread_rdwr_t si_csn_rwlock;
141 ldap_pvt_thread_mutex_t si_ops_mutex;
142 ldap_pvt_thread_mutex_t si_mods_mutex;
143 ldap_pvt_thread_mutex_t si_resp_mutex;
146 typedef struct opcookie {
148 syncmatches *smatches;
151 struct berval sdn; /* DN of entry, for deletes */
153 struct berval suuid; /* UUID of entry */
154 struct berval sctxcsn;
155 short osid; /* sid of op csn */
156 short rsid; /* sid of relay */
157 short sreference; /* Is the entry a reference? */
160 typedef struct mutexint {
161 ldap_pvt_thread_mutex_t mi_mutex;
165 typedef struct fbase_cookie {
166 struct berval *fdn; /* DN of a modified entry, for scope testing */
167 syncops *fss; /* persistent search we're testing against */
168 int fbase; /* if TRUE we found the search base and it's still valid */
169 int fscope; /* if TRUE then fdn is within the psearch scope */
172 static AttributeName csn_anlist[3];
173 static AttributeName uuid_anlist[2];
175 /* Build a LDAPsync intermediate state control */
181 int entry_sync_state,
185 struct berval *cookie )
190 BerElementBuffer berbuf;
191 BerElement *ber = (BerElement *)&berbuf;
193 struct berval entryuuid_bv = BER_BVNULL;
195 ber_init2( ber, 0, LBER_USE_DER );
196 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
198 ctrls[num_ctrls] = op->o_tmpalloc( sizeof ( LDAPControl ), op->o_tmpmemctx );
200 for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
201 AttributeDescription *desc = a->a_desc;
202 if ( desc == slap_schema.si_ad_entryUUID ) {
203 entryuuid_bv = a->a_nvals[0];
208 /* FIXME: what if entryuuid is NULL or empty ? */
210 if ( send_cookie && cookie ) {
211 ber_printf( ber, "{eOON}",
212 entry_sync_state, &entryuuid_bv, cookie );
214 ber_printf( ber, "{eON}",
215 entry_sync_state, &entryuuid_bv );
218 ctrls[num_ctrls]->ldctl_oid = LDAP_CONTROL_SYNC_STATE;
219 ctrls[num_ctrls]->ldctl_iscritical = (op->o_sync == SLAP_CONTROL_CRITICAL);
220 ret = ber_flatten2( ber, &ctrls[num_ctrls]->ldctl_value, 1 );
225 Debug( LDAP_DEBUG_TRACE,
226 "slap_build_sync_ctrl: ber_flatten2 failed\n",
228 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
235 /* Build a LDAPsync final state control */
243 struct berval *cookie,
247 BerElementBuffer berbuf;
248 BerElement *ber = (BerElement *)&berbuf;
250 ber_init2( ber, NULL, LBER_USE_DER );
251 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
253 ctrls[num_ctrls] = op->o_tmpalloc( sizeof ( LDAPControl ), op->o_tmpmemctx );
255 ber_printf( ber, "{" );
256 if ( send_cookie && cookie ) {
257 ber_printf( ber, "O", cookie );
259 if ( refreshDeletes == LDAP_SYNC_REFRESH_DELETES ) {
260 ber_printf( ber, "b", refreshDeletes );
262 ber_printf( ber, "N}" );
264 ctrls[num_ctrls]->ldctl_oid = LDAP_CONTROL_SYNC_DONE;
265 ctrls[num_ctrls]->ldctl_iscritical = (op->o_sync == SLAP_CONTROL_CRITICAL);
266 ret = ber_flatten2( ber, &ctrls[num_ctrls]->ldctl_value, 1 );
271 Debug( LDAP_DEBUG_TRACE,
272 "syncprov_done_ctrl: ber_flatten2 failed\n",
274 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
286 struct berval *cookie,
291 BerElementBuffer berbuf;
292 BerElement *ber = (BerElement *)&berbuf;
293 struct berval rspdata;
297 ber_init2( ber, NULL, LBER_USE_DER );
298 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
302 case LDAP_TAG_SYNC_NEW_COOKIE:
303 ber_printf( ber, "tO", type, cookie );
305 case LDAP_TAG_SYNC_REFRESH_DELETE:
306 case LDAP_TAG_SYNC_REFRESH_PRESENT:
307 ber_printf( ber, "t{", type );
309 ber_printf( ber, "O", cookie );
311 if ( refreshDone == 0 ) {
312 ber_printf( ber, "b", refreshDone );
314 ber_printf( ber, "N}" );
316 case LDAP_TAG_SYNC_ID_SET:
317 ber_printf( ber, "t{", type );
319 ber_printf( ber, "O", cookie );
321 if ( refreshDeletes == 1 ) {
322 ber_printf( ber, "b", refreshDeletes );
324 ber_printf( ber, "[W]", syncUUIDs );
325 ber_printf( ber, "N}" );
328 Debug( LDAP_DEBUG_TRACE,
329 "syncprov_sendinfo: invalid syncinfo type (%d)\n",
335 ret = ber_flatten2( ber, &rspdata, 0 );
338 Debug( LDAP_DEBUG_TRACE,
339 "syncprov_sendinfo: ber_flatten2 failed\n",
341 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
345 rs->sr_rspoid = LDAP_SYNC_INFO;
346 rs->sr_rspdata = &rspdata;
347 send_ldap_intermediate( op, rs );
348 rs->sr_rspdata = NULL;
354 /* Find a modtarget in an AVL tree */
356 sp_avl_cmp( const void *c1, const void *c2 )
358 const modtarget *m1, *m2;
362 rc = m1->mt_op->o_req_ndn.bv_len - m2->mt_op->o_req_ndn.bv_len;
365 return ber_bvcmp( &m1->mt_op->o_req_ndn, &m2->mt_op->o_req_ndn );
368 /* syncprov_findbase:
369 * finds the true DN of the base of a search (with alias dereferencing) and
370 * checks to make sure the base entry doesn't get replaced with a different
371 * entry (e.g., swapping trees via ModDN, or retargeting an alias). If a
372 * change is detected, any persistent search on this base must be terminated /
374 * On the first call, we just save the DN and entryID. On subsequent calls
375 * we compare the DN and entryID with the saved values.
378 findbase_cb( Operation *op, SlapReply *rs )
380 slap_callback *sc = op->o_callback;
382 if ( rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS ) {
383 fbase_cookie *fc = sc->sc_private;
385 /* If no entryID, we're looking for the first time.
386 * Just store whatever we got.
388 if ( fc->fss->s_eid == NOID ) {
390 fc->fss->s_eid = rs->sr_entry->e_id;
391 ber_dupbv( &fc->fss->s_base, &rs->sr_entry->e_nname );
393 } else if ( rs->sr_entry->e_id == fc->fss->s_eid &&
394 dn_match( &rs->sr_entry->e_nname, &fc->fss->s_base )) {
396 /* OK, the DN is the same and the entryID is the same. */
400 if ( rs->sr_err != LDAP_SUCCESS ) {
401 Debug( LDAP_DEBUG_ANY, "findbase failed! %d\n", rs->sr_err,0,0 );
406 static Filter generic_filter = { LDAP_FILTER_PRESENT, { 0 }, NULL };
407 static struct berval generic_filterstr = BER_BVC("(objectclass=*)");
410 syncprov_findbase( Operation *op, fbase_cookie *fc )
412 /* Use basic parameters from syncrepl search, but use
413 * current op's threadctx / tmpmemctx
415 ldap_pvt_thread_mutex_lock( &fc->fss->s_mutex );
416 if ( fc->fss->s_flags & PS_FIND_BASE ) {
417 slap_callback cb = {0};
419 SlapReply frs = { REP_RESULT };
422 fc->fss->s_flags ^= PS_FIND_BASE;
423 ldap_pvt_thread_mutex_unlock( &fc->fss->s_mutex );
425 fop = *fc->fss->s_op;
427 fop.o_bd = fop.o_bd->bd_self;
428 fop.o_hdr = op->o_hdr;
429 fop.o_time = op->o_time;
430 fop.o_tincr = op->o_tincr;
432 cb.sc_response = findbase_cb;
435 fop.o_sync_mode = 0; /* turn off sync mode */
436 fop.o_managedsait = SLAP_CONTROL_CRITICAL;
437 fop.o_callback = &cb;
438 fop.o_tag = LDAP_REQ_SEARCH;
439 fop.ors_scope = LDAP_SCOPE_BASE;
440 fop.ors_limit = NULL;
442 fop.ors_tlimit = SLAP_NO_LIMIT;
443 fop.ors_attrs = slap_anlist_no_attrs;
444 fop.ors_attrsonly = 1;
445 fop.ors_filter = &generic_filter;
446 fop.ors_filterstr = generic_filterstr;
448 rc = fop.o_bd->be_search( &fop, &frs );
450 ldap_pvt_thread_mutex_unlock( &fc->fss->s_mutex );
454 /* After the first call, see if the fdn resides in the scope */
455 if ( fc->fbase == 1 ) {
456 switch ( fc->fss->s_op->ors_scope ) {
457 case LDAP_SCOPE_BASE:
458 fc->fscope = dn_match( fc->fdn, &fc->fss->s_base );
460 case LDAP_SCOPE_ONELEVEL: {
462 dnParent( fc->fdn, &pdn );
463 fc->fscope = dn_match( &pdn, &fc->fss->s_base );
465 case LDAP_SCOPE_SUBTREE:
466 fc->fscope = dnIsSuffix( fc->fdn, &fc->fss->s_base );
468 case LDAP_SCOPE_SUBORDINATE:
469 fc->fscope = dnIsSuffix( fc->fdn, &fc->fss->s_base ) &&
470 !dn_match( fc->fdn, &fc->fss->s_base );
478 /* If entryID has changed, then the base of this search has
479 * changed. Invalidate the psearch.
481 return LDAP_NO_SUCH_OBJECT;
485 * This function has three different purposes, but they all use a search
486 * that filters on entryCSN so they're combined here.
487 * 1: at startup time, after a contextCSN has been read from the database,
488 * we search for all entries with CSN >= contextCSN in case the contextCSN
489 * was not checkpointed at the previous shutdown.
491 * 2: when the current contextCSN is known and we have a sync cookie, we search
492 * for one entry with CSN = the cookie CSN. If not found, try <= cookie CSN.
493 * If an entry is found, the cookie CSN is valid, otherwise it is stale.
495 * 3: during a refresh phase, we search for all entries with CSN <= the cookie
496 * CSN, and generate Present records for them. We always collect this result
497 * in SyncID sets, even if there's only one match.
499 typedef enum find_csn_t {
506 findmax_cb( Operation *op, SlapReply *rs )
508 if ( rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS ) {
509 struct berval *maxcsn = op->o_callback->sc_private;
510 Attribute *a = attr_find( rs->sr_entry->e_attrs,
511 slap_schema.si_ad_entryCSN );
513 if ( a && ber_bvcmp( &a->a_vals[0], maxcsn ) > 0 &&
514 slap_parse_csn_sid( &a->a_vals[0] ) == slap_serverID ) {
515 maxcsn->bv_len = a->a_vals[0].bv_len;
516 strcpy( maxcsn->bv_val, a->a_vals[0].bv_val );
523 findcsn_cb( Operation *op, SlapReply *rs )
525 slap_callback *sc = op->o_callback;
527 /* We just want to know that at least one exists, so it's OK if
528 * we exceed the unchecked limit.
530 if ( rs->sr_err == LDAP_ADMINLIMIT_EXCEEDED ||
531 (rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS )) {
532 sc->sc_private = (void *)1;
537 /* Build a list of entryUUIDs for sending in a SyncID set */
541 typedef struct fpres_cookie {
548 findpres_cb( Operation *op, SlapReply *rs )
550 slap_callback *sc = op->o_callback;
551 fpres_cookie *pc = sc->sc_private;
553 int ret = SLAP_CB_CONTINUE;
555 switch ( rs->sr_type ) {
557 a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_entryUUID );
559 pc->uuids[pc->num].bv_val = pc->last;
560 AC_MEMCPY( pc->uuids[pc->num].bv_val, a->a_nvals[0].bv_val,
561 pc->uuids[pc->num].bv_len );
563 pc->last = pc->uuids[pc->num].bv_val;
564 pc->uuids[pc->num].bv_val = NULL;
567 if ( pc->num != SLAP_SYNCUUID_SET_SIZE )
573 ret = syncprov_sendinfo( op, rs, LDAP_TAG_SYNC_ID_SET, NULL,
575 pc->uuids[pc->num].bv_val = pc->last;
577 pc->last = pc->uuids[0].bv_val;
587 syncprov_findcsn( Operation *op, find_csn_t mode )
589 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
590 syncprov_info_t *si = on->on_bi.bi_private;
592 slap_callback cb = {0};
594 SlapReply frs = { REP_RESULT };
595 char buf[LDAP_PVT_CSNSTR_BUFSIZE + STRLENOF("(entryCSN<=)")];
596 char cbuf[LDAP_PVT_CSNSTR_BUFSIZE];
597 struct berval maxcsn;
599 AttributeAssertion eq = ATTRIBUTEASSERTION_INIT;
600 fpres_cookie pcookie;
601 sync_control *srs = NULL;
602 struct slap_limits_set fc_limits;
603 int i, rc = LDAP_SUCCESS, findcsn_retry = 1;
606 if ( mode != FIND_MAXCSN ) {
607 srs = op->o_controls[slap_cids.sc_LDAPsync];
611 fop.o_sync_mode &= SLAP_CONTROL_MASK; /* turn off sync_mode */
612 /* We want pure entries, not referrals */
613 fop.o_managedsait = SLAP_CONTROL_CRITICAL;
616 cf.f_av_desc = slap_schema.si_ad_entryCSN;
617 BER_BVZERO( &cf.f_av_value );
620 fop.o_callback = &cb;
621 fop.ors_limit = NULL;
622 fop.ors_tlimit = SLAP_NO_LIMIT;
623 fop.ors_filter = &cf;
624 fop.ors_filterstr.bv_val = buf;
629 cf.f_choice = LDAP_FILTER_GE;
630 /* If there are multiple CSNs, use the one with our serverID */
631 for ( i=0; i<si->si_numcsns; i++) {
632 if ( slap_serverID == si->si_sids[i] ) {
637 if ( i == si->si_numcsns ) {
638 /* No match: this is multimaster, and none of the content in the DB
639 * originated locally. Treat like no CSN.
641 return LDAP_NO_SUCH_OBJECT;
643 cf.f_av_value = si->si_ctxcsn[maxid];
644 fop.ors_filterstr.bv_len = snprintf( buf, sizeof( buf ),
645 "(entryCSN>=%s)", cf.f_av_value.bv_val );
646 if ( fop.ors_filterstr.bv_len >= sizeof( buf ) ) {
649 fop.ors_attrsonly = 0;
650 fop.ors_attrs = csn_anlist;
651 fop.ors_slimit = SLAP_NO_LIMIT;
652 cb.sc_private = &maxcsn;
653 cb.sc_response = findmax_cb;
654 strcpy( cbuf, cf.f_av_value.bv_val );
655 maxcsn.bv_val = cbuf;
656 maxcsn.bv_len = cf.f_av_value.bv_len;
659 if ( BER_BVISEMPTY( &cf.f_av_value )) {
660 cf.f_av_value = srs->sr_state.ctxcsn[0];
661 /* If there are multiple CSNs, use the smallest */
662 for ( i=1; i<srs->sr_state.numcsns; i++ ) {
663 if ( ber_bvcmp( &cf.f_av_value, &srs->sr_state.ctxcsn[i] )
665 cf.f_av_value = srs->sr_state.ctxcsn[i];
669 /* Look for exact match the first time */
670 if ( findcsn_retry ) {
671 cf.f_choice = LDAP_FILTER_EQUALITY;
672 fop.ors_filterstr.bv_len = snprintf( buf, sizeof( buf ),
673 "(entryCSN=%s)", cf.f_av_value.bv_val );
674 /* On retry, look for <= */
676 cf.f_choice = LDAP_FILTER_LE;
677 fop.ors_limit = &fc_limits;
678 memset( &fc_limits, 0, sizeof( fc_limits ));
679 fc_limits.lms_s_unchecked = 1;
680 fop.ors_filterstr.bv_len = snprintf( buf, sizeof( buf ),
681 "(entryCSN<=%s)", cf.f_av_value.bv_val );
683 if ( fop.ors_filterstr.bv_len >= sizeof( buf ) ) {
686 fop.ors_attrsonly = 1;
687 fop.ors_attrs = slap_anlist_no_attrs;
689 cb.sc_private = NULL;
690 cb.sc_response = findcsn_cb;
693 fop.ors_filter = op->ors_filter;
694 fop.ors_filterstr = op->ors_filterstr;
695 fop.ors_attrsonly = 0;
696 fop.ors_attrs = uuid_anlist;
697 fop.ors_slimit = SLAP_NO_LIMIT;
698 cb.sc_private = &pcookie;
699 cb.sc_response = findpres_cb;
702 /* preallocate storage for a full set */
703 pcookie.uuids = op->o_tmpalloc( (SLAP_SYNCUUID_SET_SIZE+1) *
704 sizeof(struct berval) + SLAP_SYNCUUID_SET_SIZE * UUID_LEN,
706 pcookie.last = (char *)(pcookie.uuids + SLAP_SYNCUUID_SET_SIZE+1);
707 pcookie.uuids[0].bv_val = pcookie.last;
708 pcookie.uuids[0].bv_len = UUID_LEN;
709 for (i=1; i<SLAP_SYNCUUID_SET_SIZE; i++) {
710 pcookie.uuids[i].bv_val = pcookie.uuids[i-1].bv_val + UUID_LEN;
711 pcookie.uuids[i].bv_len = UUID_LEN;
716 fop.o_bd->bd_info = (BackendInfo *)on->on_info;
717 fop.o_bd->be_search( &fop, &frs );
718 fop.o_bd->bd_info = (BackendInfo *)on;
722 if ( ber_bvcmp( &si->si_ctxcsn[maxid], &maxcsn )) {
724 Syntax *syn = slap_schema.si_ad_contextCSN->ad_type->sat_syntax;
725 assert( !syn->ssyn_validate( syn, &maxcsn ));
727 ber_bvreplace( &si->si_ctxcsn[maxid], &maxcsn );
728 si->si_numops++; /* ensure a checkpoint */
732 /* If matching CSN was not found, invalidate the context. */
733 if ( !cb.sc_private ) {
734 /* If we didn't find an exact match, then try for <= */
735 if ( findcsn_retry ) {
739 rc = LDAP_NO_SUCH_OBJECT;
743 op->o_tmpfree( pcookie.uuids, op->o_tmpmemctx );
750 /* Should find a place to cache these */
751 static mutexint *get_mutexint()
753 mutexint *mi = ch_malloc( sizeof( mutexint ));
754 ldap_pvt_thread_mutex_init( &mi->mi_mutex );
759 static void inc_mutexint( mutexint *mi )
761 ldap_pvt_thread_mutex_lock( &mi->mi_mutex );
763 ldap_pvt_thread_mutex_unlock( &mi->mi_mutex );
766 /* return resulting counter */
767 static int dec_mutexint( mutexint *mi )
770 ldap_pvt_thread_mutex_lock( &mi->mi_mutex );
772 ldap_pvt_thread_mutex_unlock( &mi->mi_mutex );
774 ldap_pvt_thread_mutex_destroy( &mi->mi_mutex );
781 syncprov_free_syncop( syncops *so )
783 syncres *sr, *srnext;
784 GroupAssertion *ga, *gnext;
786 ldap_pvt_thread_mutex_lock( &so->s_mutex );
787 /* already being freed, or still in use */
788 if ( !so->s_inuse || --so->s_inuse > 0 ) {
789 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
792 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
793 if ( so->s_flags & PS_IS_DETACHED ) {
794 filter_free( so->s_op->ors_filter );
795 for ( ga = so->s_op->o_groups; ga; ga=gnext ) {
801 ch_free( so->s_base.bv_val );
802 for ( sr=so->s_res; sr; sr=srnext ) {
805 if ( !dec_mutexint( sr->s_e->e_private )) {
806 sr->s_e->e_private = NULL;
807 entry_free( sr->s_e );
812 ldap_pvt_thread_mutex_destroy( &so->s_mutex );
816 /* Send a persistent search response */
818 syncprov_sendresp( Operation *op, opcookie *opc, syncops *so, int mode )
820 slap_overinst *on = opc->son;
822 SlapReply rs = { REP_SEARCH };
823 LDAPControl *ctrls[2];
824 struct berval cookie = BER_BVNULL, csns[2];
826 Attribute a_uuid = {0};
828 if ( so->s_op->o_abandon )
829 return SLAPD_ABANDON;
832 if ( !BER_BVISNULL( &opc->sctxcsn )) {
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 );
839 if ( so->s_sid > 0 ) {
840 Debug( LDAP_DEBUG_SYNC, "syncprov_sendresp: to=%03x, cookie=%s\n",
841 so->s_sid, cookie.bv_val ? cookie.bv_val : "", 0 );
843 Debug( LDAP_DEBUG_SYNC, "syncprov_sendresp: cookie=%s\n",
844 cookie.bv_val ? cookie.bv_val : "", 0, 0 );
848 e_uuid.e_attrs = &a_uuid;
849 a_uuid.a_desc = slap_schema.si_ad_entryUUID;
850 a_uuid.a_nvals = &opc->suuid;
851 rs.sr_err = syncprov_state_ctrl( op, &rs, &e_uuid,
852 mode, ctrls, 0, 1, &cookie );
853 if ( !BER_BVISNULL( &cookie )) {
854 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
858 rs.sr_entry = &e_uuid;
859 if ( mode == LDAP_SYNC_ADD || mode == LDAP_SYNC_MODIFY ) {
861 e_uuid.e_private = NULL;
866 if ( opc->sreference && so->s_op->o_managedsait <= SLAP_CONTROL_IGNORED ) {
867 rs.sr_ref = get_entry_referrals( op, rs.sr_entry );
868 rs.sr_err = send_search_reference( op, &rs );
869 ber_bvarray_free( rs.sr_ref );
873 case LDAP_SYNC_MODIFY:
874 rs.sr_attrs = op->ors_attrs;
875 rs.sr_err = send_search_entry( op, &rs );
877 case LDAP_SYNC_DELETE:
878 e_uuid.e_attrs = NULL;
879 e_uuid.e_name = opc->sdn;
880 e_uuid.e_nname = opc->sndn;
881 if ( opc->sreference && so->s_op->o_managedsait <= SLAP_CONTROL_IGNORED ) {
882 struct berval bv = BER_BVNULL;
884 rs.sr_err = send_search_reference( op, &rs );
886 rs.sr_err = send_search_entry( op, &rs );
892 /* In case someone else freed it already? */
895 for ( i=0; rs.sr_ctrls[i]; i++ ) {
896 if ( rs.sr_ctrls[i] == ctrls[0] ) {
897 op->o_tmpfree( ctrls[0]->ldctl_value.bv_val, op->o_tmpmemctx );
898 ctrls[0]->ldctl_value.bv_val = NULL;
909 syncprov_qstart( syncops *so );
911 /* Play back queued responses */
913 syncprov_qplay( Operation *op, syncops *so )
915 slap_overinst *on = LDAP_SLIST_FIRST(&so->s_op->o_extra)->oe_key;
924 ldap_pvt_thread_mutex_lock( &so->s_mutex );
927 so->s_res = sr->s_next;
929 so->s_restail = NULL;
930 /* Exit loop with mutex held */
931 if ( !sr || so->s_op->o_abandon )
933 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
935 if ( sr->s_mode == LDAP_SYNC_NEW_COOKIE ) {
936 SlapReply rs = { REP_INTERMEDIATE };
938 rc = syncprov_sendinfo( op, &rs, LDAP_TAG_SYNC_NEW_COOKIE,
939 &sr->s_csn, 0, NULL, 0 );
942 opc.sndn = sr->s_ndn;
943 opc.suuid = sr->s_uuid;
944 opc.sctxcsn = sr->s_csn;
945 opc.sreference = sr->s_isreference;
948 rc = syncprov_sendresp( op, &opc, so, sr->s_mode );
952 if ( !dec_mutexint( sr->s_e->e_private )) {
953 sr->s_e->e_private = NULL;
954 entry_free ( sr->s_e );
960 /* Exit loop with mutex held */
961 ldap_pvt_thread_mutex_lock( &so->s_mutex );
965 /* We now only send one change at a time, to prevent one
966 * psearch from hogging all the CPU. Resubmit this task if
967 * there are more responses queued and no errors occurred.
970 if ( rc == 0 && so->s_res ) {
971 syncprov_qstart( so );
973 so->s_flags ^= PS_TASK_QUEUED;
976 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
980 /* task for playing back queued responses */
982 syncprov_qtask( void *ctx, void *arg )
985 OperationBuffer opbuf;
992 op->o_hdr = &opbuf.ob_hdr;
993 op->o_controls = opbuf.ob_controls;
994 memset( op->o_controls, 0, sizeof(opbuf.ob_controls) );
996 *op->o_hdr = *so->s_op->o_hdr;
998 op->o_tmpmemctx = slap_sl_mem_create(SLAP_SLAB_SIZE, SLAP_SLAB_STACK, ctx, 1);
999 op->o_tmpmfuncs = &slap_sl_mfuncs;
1000 op->o_threadctx = ctx;
1002 /* syncprov_qplay expects a fake db */
1003 be = *so->s_op->o_bd;
1004 be.be_flags |= SLAP_DBFLAG_OVERLAY;
1006 LDAP_SLIST_FIRST(&op->o_extra) = NULL;
1007 op->o_callback = NULL;
1009 rc = syncprov_qplay( op, so );
1011 /* decrement use count... */
1012 syncprov_free_syncop( so );
1017 /* Start the task to play back queued psearch responses */
1019 syncprov_qstart( syncops *so )
1021 so->s_flags |= PS_TASK_QUEUED;
1023 ldap_pvt_thread_pool_submit( &connection_pool,
1024 syncprov_qtask, so );
1027 /* Queue a persistent search response */
1029 syncprov_qresp( opcookie *opc, syncops *so, int mode )
1033 struct berval cookie = opc->sctxcsn;
1035 if ( mode == LDAP_SYNC_NEW_COOKIE ) {
1036 syncprov_info_t *si = opc->son->on_bi.bi_private;
1038 slap_compose_sync_cookie( NULL, &cookie, si->si_ctxcsn,
1039 so->s_rid, slap_serverID ? slap_serverID : -1);
1042 srsize = sizeof(syncres) + opc->suuid.bv_len + 1 +
1043 opc->sdn.bv_len + 1 + opc->sndn.bv_len + 1;
1044 if ( cookie.bv_len )
1045 srsize += cookie.bv_len + 1;
1046 sr = ch_malloc( srsize );
1049 /* bump refcount on this entry */
1051 inc_mutexint( opc->se->e_private );
1052 sr->s_dn.bv_val = (char *)(sr + 1);
1053 sr->s_dn.bv_len = opc->sdn.bv_len;
1055 sr->s_isreference = opc->sreference;
1056 sr->s_ndn.bv_val = lutil_strcopy( sr->s_dn.bv_val,
1057 opc->sdn.bv_val ) + 1;
1058 sr->s_ndn.bv_len = opc->sndn.bv_len;
1059 sr->s_uuid.bv_val = lutil_strcopy( sr->s_ndn.bv_val,
1060 opc->sndn.bv_val ) + 1;
1061 sr->s_uuid.bv_len = opc->suuid.bv_len;
1062 AC_MEMCPY( sr->s_uuid.bv_val, opc->suuid.bv_val, opc->suuid.bv_len );
1063 if ( cookie.bv_len ) {
1064 sr->s_csn.bv_val = sr->s_uuid.bv_val + sr->s_uuid.bv_len + 1;
1065 strcpy( sr->s_csn.bv_val, cookie.bv_val );
1067 sr->s_csn.bv_val = NULL;
1069 sr->s_csn.bv_len = cookie.bv_len;
1071 if ( mode == LDAP_SYNC_NEW_COOKIE && cookie.bv_val ) {
1072 ch_free( cookie.bv_val );
1075 ldap_pvt_thread_mutex_lock( &so->s_mutex );
1079 so->s_restail->s_next = sr;
1083 /* If the base of the psearch was modified, check it next time round */
1084 if ( so->s_flags & PS_WROTE_BASE ) {
1085 so->s_flags ^= PS_WROTE_BASE;
1086 so->s_flags |= PS_FIND_BASE;
1088 if (( so->s_flags & (PS_IS_DETACHED|PS_TASK_QUEUED)) == PS_IS_DETACHED ) {
1089 syncprov_qstart( so );
1091 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
1092 return LDAP_SUCCESS;
1096 syncprov_drop_psearch( syncops *so, int lock )
1098 if ( so->s_flags & PS_IS_DETACHED ) {
1100 ldap_pvt_thread_mutex_lock( &so->s_op->o_conn->c_mutex );
1101 so->s_op->o_conn->c_n_ops_executing--;
1102 so->s_op->o_conn->c_n_ops_completed++;
1103 LDAP_STAILQ_REMOVE( &so->s_op->o_conn->c_ops, so->s_op, Operation,
1106 ldap_pvt_thread_mutex_unlock( &so->s_op->o_conn->c_mutex );
1108 syncprov_free_syncop( so );
1114 syncprov_ab_cleanup( Operation *op, SlapReply *rs )
1116 slap_callback *sc = op->o_callback;
1117 op->o_callback = sc->sc_next;
1118 syncprov_drop_psearch( op->o_callback->sc_private, 0 );
1119 op->o_tmpfree( sc, op->o_tmpmemctx );
1124 syncprov_op_abandon( Operation *op, SlapReply *rs )
1126 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1127 syncprov_info_t *si = on->on_bi.bi_private;
1128 syncops *so, *soprev;
1130 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1131 for ( so=si->si_ops, soprev = (syncops *)&si->si_ops; so;
1132 soprev=so, so=so->s_next ) {
1133 if ( so->s_op->o_connid == op->o_connid &&
1134 so->s_op->o_msgid == op->orn_msgid ) {
1135 so->s_op->o_abandon = 1;
1136 soprev->s_next = so->s_next;
1140 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1142 /* Is this really a Cancel exop? */
1143 if ( op->o_tag != LDAP_REQ_ABANDON ) {
1144 so->s_op->o_cancel = SLAP_CANCEL_ACK;
1145 rs->sr_err = LDAP_CANCELLED;
1146 send_ldap_result( so->s_op, rs );
1147 if ( so->s_flags & PS_IS_DETACHED ) {
1149 cb = op->o_tmpcalloc( 1, sizeof(slap_callback), op->o_tmpmemctx );
1150 cb->sc_cleanup = syncprov_ab_cleanup;
1151 cb->sc_next = op->o_callback;
1152 cb->sc_private = so;
1153 return SLAP_CB_CONTINUE;
1156 syncprov_drop_psearch( so, 0 );
1158 return SLAP_CB_CONTINUE;
1161 /* Find which persistent searches are affected by this operation */
1163 syncprov_matchops( Operation *op, opcookie *opc, int saveit )
1165 slap_overinst *on = opc->son;
1166 syncprov_info_t *si = on->on_bi.bi_private;
1169 syncops *ss, *sprev, *snext;
1173 struct berval newdn;
1175 BackendDB *b0 = op->o_bd, db;
1177 fc.fdn = &op->o_req_ndn;
1178 /* compute new DN */
1179 if ( op->o_tag == LDAP_REQ_MODRDN && !saveit ) {
1181 if ( op->orr_nnewSup ) pdn = *op->orr_nnewSup;
1182 else dnParent( fc.fdn, &pdn );
1183 build_new_dn( &newdn, &pdn, &op->orr_nnewrdn, op->o_tmpmemctx );
1187 if ( op->o_tag != LDAP_REQ_ADD ) {
1188 if ( !SLAP_ISOVERLAY( op->o_bd )) {
1192 rc = overlay_entry_get_ov( op, fc.fdn, NULL, NULL, 0, &e, on );
1193 /* If we're sending responses now, make a copy and unlock the DB */
1194 if ( e && !saveit ) {
1196 opc->se = entry_dup( e );
1197 opc->se->e_private = get_mutexint();
1199 overlay_entry_release_ov( op, e, 0, on );
1210 opc->se = entry_dup( e );
1211 opc->se->e_private = get_mutexint();
1217 if ( saveit || op->o_tag == LDAP_REQ_ADD ) {
1218 ber_dupbv_x( &opc->sdn, &e->e_name, op->o_tmpmemctx );
1219 ber_dupbv_x( &opc->sndn, &e->e_nname, op->o_tmpmemctx );
1220 opc->sreference = is_entry_referral( e );
1221 a = attr_find( e->e_attrs, slap_schema.si_ad_entryUUID );
1223 ber_dupbv_x( &opc->suuid, &a->a_nvals[0], op->o_tmpmemctx );
1224 } else if ( op->o_tag == LDAP_REQ_MODRDN && !saveit ) {
1225 op->o_tmpfree( opc->sndn.bv_val, op->o_tmpmemctx );
1226 op->o_tmpfree( opc->sdn.bv_val, op->o_tmpmemctx );
1227 ber_dupbv_x( &opc->sdn, &e->e_name, op->o_tmpmemctx );
1228 ber_dupbv_x( &opc->sndn, &e->e_nname, op->o_tmpmemctx );
1231 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1232 for (ss = si->si_ops, sprev = (syncops *)&si->si_ops; ss;
1233 sprev = ss, ss=snext)
1241 if ( ss->s_op->o_abandon )
1244 /* Don't send ops back to the originator */
1245 if ( opc->osid > 0 && opc->osid == ss->s_sid ) {
1246 Debug( LDAP_DEBUG_SYNC, "syncprov_matchops: skipping original sid %03x\n",
1251 /* Don't send ops back to the messenger */
1252 if ( opc->rsid > 0 && opc->rsid == ss->s_sid ) {
1253 Debug( LDAP_DEBUG_SYNC, "syncprov_matchops: skipping relayed sid %03x\n",
1263 /* If the base of the search is missing, signal a refresh */
1264 rc = syncprov_findbase( op, &fc );
1265 if ( rc != LDAP_SUCCESS ) {
1266 SlapReply rs = {REP_RESULT};
1267 send_ldap_error( ss->s_op, &rs, LDAP_SYNC_REFRESH_REQUIRED,
1268 "search base has changed" );
1269 sprev->s_next = snext;
1270 syncprov_drop_psearch( ss, 1 );
1275 /* If we're sending results now, look for this op in old matches */
1279 /* Did we modify the search base? */
1280 if ( dn_match( &op->o_req_ndn, &ss->s_base )) {
1281 ldap_pvt_thread_mutex_lock( &ss->s_mutex );
1282 ss->s_flags |= PS_WROTE_BASE;
1283 ldap_pvt_thread_mutex_unlock( &ss->s_mutex );
1286 for ( sm=opc->smatches, old=(syncmatches *)&opc->smatches; sm;
1287 old=sm, sm=sm->sm_next ) {
1288 if ( sm->sm_op == ss ) {
1290 old->sm_next = sm->sm_next;
1291 op->o_tmpfree( sm, op->o_tmpmemctx );
1298 ldap_pvt_thread_mutex_lock( &ss->s_mutex );
1301 oh.oh_conn = ss->s_op->o_conn;
1302 oh.oh_connid = ss->s_op->o_connid;
1303 op2.o_bd = op->o_bd->bd_self;
1305 op2.o_extra = op->o_extra;
1306 op2.o_callback = NULL;
1307 if (ss->s_flags & PS_FIX_FILTER) {
1308 /* Skip the AND/GE clause that we stuck on in front. We
1309 would lose deletes/mods that happen during the refresh
1310 phase otherwise (ITS#6555) */
1311 op2.ors_filter = ss->s_op->ors_filter->f_and->f_next;
1313 ldap_pvt_thread_mutex_unlock( &ss->s_mutex );
1314 rc = test_filter( &op2, e, op2.ors_filter );
1317 Debug( LDAP_DEBUG_TRACE, "syncprov_matchops: sid %03x fscope %d rc %d\n",
1318 ss->s_sid, fc.fscope, rc );
1320 /* check if current o_req_dn is in scope and matches filter */
1321 if ( fc.fscope && rc == LDAP_COMPARE_TRUE ) {
1323 sm = op->o_tmpalloc( sizeof(syncmatches), op->o_tmpmemctx );
1324 sm->sm_next = opc->smatches;
1326 ldap_pvt_thread_mutex_lock( &ss->s_mutex );
1328 ldap_pvt_thread_mutex_unlock( &ss->s_mutex );
1331 /* if found send UPDATE else send ADD */
1332 syncprov_qresp( opc, ss,
1333 found ? LDAP_SYNC_MODIFY : LDAP_SYNC_ADD );
1335 } else if ( !saveit && found ) {
1337 syncprov_qresp( opc, ss, LDAP_SYNC_DELETE );
1338 } else if ( !saveit ) {
1339 syncprov_qresp( opc, ss, LDAP_SYNC_NEW_COOKIE );
1341 if ( !saveit && found ) {
1342 /* Decrement s_inuse, was incremented when called
1343 * with saveit == TRUE
1345 syncprov_free_syncop( ss );
1348 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1350 if ( op->o_tag != LDAP_REQ_ADD && e ) {
1351 if ( !SLAP_ISOVERLAY( op->o_bd )) {
1355 overlay_entry_release_ov( op, e, 0, on );
1358 if ( opc->se && !saveit ) {
1359 if ( !dec_mutexint( opc->se->e_private )) {
1360 opc->se->e_private = NULL;
1361 entry_free( opc->se );
1366 op->o_tmpfree( fc.fdn->bv_val, op->o_tmpmemctx );
1372 syncprov_op_cleanup( Operation *op, SlapReply *rs )
1374 slap_callback *cb = op->o_callback;
1375 opcookie *opc = cb->sc_private;
1376 slap_overinst *on = opc->son;
1377 syncprov_info_t *si = on->on_bi.bi_private;
1378 syncmatches *sm, *snext;
1379 modtarget *mt, mtdummy;
1381 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1382 if ( si->si_active )
1384 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1386 for (sm = opc->smatches; sm; sm=snext) {
1387 snext = sm->sm_next;
1388 syncprov_free_syncop( sm->sm_op );
1389 op->o_tmpfree( sm, op->o_tmpmemctx );
1392 /* Remove op from lock table */
1395 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
1396 mt->mt_mods = mt->mt_mods->mi_next;
1397 /* If there are more, promote the next one */
1398 if ( mt->mt_mods ) {
1399 mt->mt_op = mt->mt_mods->mi_op;
1400 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1402 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1403 ldap_pvt_thread_mutex_lock( &si->si_mods_mutex );
1404 avl_delete( &si->si_mods, mt, sp_avl_cmp );
1405 ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
1406 ldap_pvt_thread_mutex_destroy( &mt->mt_mutex );
1410 if ( !BER_BVISNULL( &opc->suuid ))
1411 op->o_tmpfree( opc->suuid.bv_val, op->o_tmpmemctx );
1412 if ( !BER_BVISNULL( &opc->sndn ))
1413 op->o_tmpfree( opc->sndn.bv_val, op->o_tmpmemctx );
1414 if ( !BER_BVISNULL( &opc->sdn ))
1415 op->o_tmpfree( opc->sdn.bv_val, op->o_tmpmemctx );
1416 op->o_callback = cb->sc_next;
1417 op->o_tmpfree(cb, op->o_tmpmemctx);
1423 syncprov_checkpoint( Operation *op, SlapReply *rs, slap_overinst *on )
1425 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
1428 SlapReply rsm = { 0 };
1429 slap_callback cb = {0};
1434 Syntax *syn = slap_schema.si_ad_contextCSN->ad_type->sat_syntax;
1437 for ( i=0; i<si->si_numcsns; i++ ) {
1438 assert( !syn->ssyn_validate( syn, si->si_ctxcsn+i ));
1441 mod.sml_numvals = si->si_numcsns;
1442 mod.sml_values = si->si_ctxcsn;
1443 mod.sml_nvalues = NULL;
1444 mod.sml_desc = slap_schema.si_ad_contextCSN;
1445 mod.sml_op = LDAP_MOD_REPLACE;
1446 mod.sml_flags = SLAP_MOD_INTERNAL;
1447 mod.sml_next = NULL;
1449 cb.sc_response = slap_null_cb;
1451 opm.o_tag = LDAP_REQ_MODIFY;
1452 opm.o_callback = &cb;
1453 opm.orm_modlist = &mod;
1454 opm.orm_no_opattrs = 1;
1455 if ( SLAP_GLUE_SUBORDINATE( op->o_bd )) {
1456 be = *on->on_info->oi_origdb;
1459 opm.o_req_dn = si->si_contextdn;
1460 opm.o_req_ndn = si->si_contextdn;
1461 bi = opm.o_bd->bd_info;
1462 opm.o_bd->bd_info = on->on_info->oi_orig;
1463 opm.o_managedsait = SLAP_CONTROL_NONCRITICAL;
1464 opm.o_no_schema_check = 1;
1465 opm.o_bd->be_modify( &opm, &rsm );
1467 if ( rsm.sr_err == LDAP_NO_SUCH_OBJECT &&
1468 SLAP_SYNC_SUBENTRY( opm.o_bd )) {
1470 char txtbuf[SLAP_TEXT_BUFLEN];
1471 size_t textlen = sizeof txtbuf;
1472 Entry *e = slap_create_context_csn_entry( opm.o_bd, NULL );
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 /* Allocate a record. UUIDs are not NUL-terminated. */
1503 se = ch_malloc( sizeof( slog_entry ) + opc->suuid.bv_len +
1504 op->o_csn.bv_len + 1 );
1506 se->se_tag = op->o_tag;
1508 se->se_uuid.bv_val = (char *)(&se[1]);
1509 AC_MEMCPY( se->se_uuid.bv_val, opc->suuid.bv_val, opc->suuid.bv_len );
1510 se->se_uuid.bv_len = opc->suuid.bv_len;
1512 se->se_csn.bv_val = se->se_uuid.bv_val + opc->suuid.bv_len;
1513 AC_MEMCPY( se->se_csn.bv_val, op->o_csn.bv_val, op->o_csn.bv_len );
1514 se->se_csn.bv_val[op->o_csn.bv_len] = '\0';
1515 se->se_csn.bv_len = op->o_csn.bv_len;
1516 se->se_sid = slap_parse_csn_sid( &se->se_csn );
1518 ldap_pvt_thread_mutex_lock( &sl->sl_mutex );
1519 if ( sl->sl_head ) {
1520 sl->sl_tail->se_next = se;
1526 while ( sl->sl_num > sl->sl_size ) {
1528 sl->sl_head = se->se_next;
1529 strcpy( sl->sl_mincsn.bv_val, se->se_csn.bv_val );
1530 sl->sl_mincsn.bv_len = se->se_csn.bv_len;
1534 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1538 /* Just set a flag if we found the matching entry */
1540 playlog_cb( Operation *op, SlapReply *rs )
1542 if ( rs->sr_type == REP_SEARCH ) {
1543 op->o_callback->sc_private = (void *)1;
1548 /* enter with sl->sl_mutex locked, release before returning */
1550 syncprov_playlog( Operation *op, SlapReply *rs, sessionlog *sl,
1551 sync_control *srs, BerVarray ctxcsn, int numcsns, int *sids )
1553 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1555 int i, j, ndel, num, nmods, mmods;
1556 char cbuf[LDAP_PVT_CSNSTR_BUFSIZE];
1558 struct berval delcsn[2];
1560 if ( !sl->sl_num ) {
1561 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1569 uuids = op->o_tmpalloc( (num+1) * sizeof( struct berval ) +
1570 num * UUID_LEN, op->o_tmpmemctx );
1571 uuids[0].bv_val = (char *)(uuids + num + 1);
1573 delcsn[0].bv_len = 0;
1574 delcsn[0].bv_val = cbuf;
1575 BER_BVZERO(&delcsn[1]);
1577 /* Make a copy of the relevant UUIDs. Put the Deletes up front
1578 * and everything else at the end. Do this first so we can
1579 * unlock the list mutex.
1581 Debug( LDAP_DEBUG_SYNC, "srs csn %s\n",
1582 srs->sr_state.ctxcsn[0].bv_val, 0, 0 );
1583 for ( se=sl->sl_head; se; se=se->se_next ) {
1585 Debug( LDAP_DEBUG_SYNC, "log csn %s\n", se->se_csn.bv_val, 0, 0 );
1587 for ( k=0; k<srs->sr_state.numcsns; k++ ) {
1588 if ( se->se_sid == srs->sr_state.sids[k] ) {
1589 ndel = ber_bvcmp( &se->se_csn, &srs->sr_state.ctxcsn[k] );
1594 Debug( LDAP_DEBUG_SYNC, "cmp %d, too old\n", ndel, 0, 0 );
1598 for ( k=0; k<numcsns; k++ ) {
1599 if ( se->se_sid == sids[k] ) {
1600 ndel = ber_bvcmp( &se->se_csn, &ctxcsn[k] );
1605 Debug( LDAP_DEBUG_SYNC, "cmp %d, too new\n", ndel, 0, 0 );
1608 if ( se->se_tag == LDAP_REQ_DELETE ) {
1611 AC_MEMCPY( cbuf, se->se_csn.bv_val, se->se_csn.bv_len );
1612 delcsn[0].bv_len = se->se_csn.bv_len;
1613 delcsn[0].bv_val[delcsn[0].bv_len] = '\0';
1618 uuids[j].bv_val = uuids[0].bv_val + (j * UUID_LEN);
1619 AC_MEMCPY(uuids[j].bv_val, se->se_uuid.bv_val, UUID_LEN);
1620 uuids[j].bv_len = UUID_LEN;
1622 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1626 /* Zero out unused slots */
1627 for ( i=ndel; i < num - nmods; i++ )
1628 uuids[i].bv_len = 0;
1630 /* Mods must be validated to see if they belong in this delete set.
1634 /* Strip any duplicates */
1635 for ( i=0; i<nmods; i++ ) {
1636 for ( j=0; j<ndel; j++ ) {
1637 if ( bvmatch( &uuids[j], &uuids[num - 1 - i] )) {
1638 uuids[num - 1 - i].bv_len = 0;
1643 if ( uuids[num - 1 - i].bv_len == 0 ) continue;
1644 for ( j=0; j<i; j++ ) {
1645 if ( bvmatch( &uuids[num - 1 - j], &uuids[num - 1 - i] )) {
1646 uuids[num - 1 - i].bv_len = 0;
1655 SlapReply frs = { REP_RESULT };
1658 AttributeAssertion eq = ATTRIBUTEASSERTION_INIT;
1659 slap_callback cb = {0};
1663 fop.o_sync_mode = 0;
1664 fop.o_callback = &cb;
1665 fop.ors_limit = NULL;
1666 fop.ors_tlimit = SLAP_NO_LIMIT;
1667 fop.ors_attrs = slap_anlist_all_attributes;
1668 fop.ors_attrsonly = 0;
1669 fop.o_managedsait = SLAP_CONTROL_CRITICAL;
1671 af.f_choice = LDAP_FILTER_AND;
1674 mf.f_choice = LDAP_FILTER_EQUALITY;
1676 mf.f_av_desc = slap_schema.si_ad_entryUUID;
1677 mf.f_next = fop.ors_filter;
1679 fop.ors_filter = ⁡
1681 cb.sc_response = playlog_cb;
1682 fop.o_bd->bd_info = (BackendInfo *)on->on_info;
1684 for ( i=ndel; i<num; i++ ) {
1685 if ( uuids[i].bv_len == 0 ) continue;
1687 mf.f_av_value = uuids[i];
1688 cb.sc_private = NULL;
1690 frs.sr_nentries = 0;
1691 rc = fop.o_bd->be_search( &fop, &frs );
1693 /* If entry was not found, add to delete list */
1694 if ( !cb.sc_private ) {
1695 uuids[ndel++] = uuids[i];
1698 fop.o_bd->bd_info = (BackendInfo *)on;
1701 struct berval cookie;
1703 if ( delcsn[0].bv_len ) {
1704 slap_compose_sync_cookie( op, &cookie, delcsn, srs->sr_state.rid,
1705 slap_serverID ? slap_serverID : -1 );
1707 Debug( LDAP_DEBUG_SYNC, "syncprov_playlog: cookie=%s\n", cookie.bv_val, 0, 0 );
1710 uuids[ndel].bv_val = NULL;
1711 syncprov_sendinfo( op, rs, LDAP_TAG_SYNC_ID_SET,
1712 delcsn[0].bv_len ? &cookie : NULL, 0, uuids, 1 );
1713 if ( delcsn[0].bv_len ) {
1714 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
1717 op->o_tmpfree( uuids, op->o_tmpmemctx );
1721 syncprov_op_response( Operation *op, SlapReply *rs )
1723 opcookie *opc = op->o_callback->sc_private;
1724 slap_overinst *on = opc->son;
1725 syncprov_info_t *si = on->on_bi.bi_private;
1728 if ( rs->sr_err == LDAP_SUCCESS )
1730 struct berval maxcsn;
1731 char cbuf[LDAP_PVT_CSNSTR_BUFSIZE];
1732 int do_check = 0, have_psearches, foundit, csn_changed = 0;
1734 ldap_pvt_thread_mutex_lock( &si->si_resp_mutex );
1736 /* Update our context CSN */
1738 maxcsn.bv_val = cbuf;
1739 maxcsn.bv_len = sizeof(cbuf);
1740 ldap_pvt_thread_rdwr_wlock( &si->si_csn_rwlock );
1742 slap_get_commit_csn( op, &maxcsn, &foundit );
1743 if ( BER_BVISEMPTY( &maxcsn ) && SLAP_GLUE_SUBORDINATE( op->o_bd )) {
1744 /* syncrepl queues the CSN values in the db where
1745 * it is configured , not where the changes are made.
1746 * So look for a value in the glue db if we didn't
1747 * find any in this db.
1749 BackendDB *be = op->o_bd;
1750 op->o_bd = select_backend( &be->be_nsuffix[0], 1);
1751 maxcsn.bv_val = cbuf;
1752 maxcsn.bv_len = sizeof(cbuf);
1753 slap_get_commit_csn( op, &maxcsn, &foundit );
1756 if ( !BER_BVISEMPTY( &maxcsn ) ) {
1759 Syntax *syn = slap_schema.si_ad_contextCSN->ad_type->sat_syntax;
1760 assert( !syn->ssyn_validate( syn, &maxcsn ));
1762 sid = slap_parse_csn_sid( &maxcsn );
1763 for ( i=0; i<si->si_numcsns; i++ ) {
1764 if ( sid == si->si_sids[i] ) {
1765 if ( ber_bvcmp( &maxcsn, &si->si_ctxcsn[i] ) > 0 ) {
1766 ber_bvreplace( &si->si_ctxcsn[i], &maxcsn );
1772 /* It's a new SID for us */
1773 if ( i == si->si_numcsns ) {
1774 value_add_one( &si->si_ctxcsn, &maxcsn );
1777 si->si_sids = ch_realloc( si->si_sids, si->si_numcsns *
1779 si->si_sids[i] = sid;
1783 /* Don't do any processing for consumer contextCSN updates */
1784 if ( op->o_dont_replicate ) {
1785 if ( op->o_tag == LDAP_REQ_MODIFY &&
1786 op->orm_modlist->sml_op == LDAP_MOD_REPLACE &&
1787 op->orm_modlist->sml_desc == slap_schema.si_ad_contextCSN ) {
1788 /* Catch contextCSN updates from syncrepl. We have to look at
1789 * all the attribute values, as there may be more than one csn
1790 * that changed, and only one can be passed in the csn queue.
1792 Modifications *mod = op->orm_modlist;
1795 for ( i=0; i<mod->sml_numvals; i++ ) {
1796 sid = slap_parse_csn_sid( &mod->sml_values[i] );
1797 for ( j=0; j<si->si_numcsns; j++ ) {
1798 if ( sid == si->si_sids[j] ) {
1799 if ( ber_bvcmp( &mod->sml_values[i], &si->si_ctxcsn[j] ) > 0 ) {
1800 ber_bvreplace( &si->si_ctxcsn[j], &mod->sml_values[i] );
1807 if ( j == si->si_numcsns ) {
1808 value_add_one( &si->si_ctxcsn, &mod->sml_values[i] );
1810 si->si_sids = ch_realloc( si->si_sids, si->si_numcsns *
1812 si->si_sids[j] = sid;
1816 ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
1818 if ( csn_changed ) {
1819 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1820 have_psearches = ( si->si_ops != NULL );
1821 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1823 if ( have_psearches ) {
1824 for ( sm = opc->smatches; sm; sm=sm->sm_next ) {
1825 if ( sm->sm_op->s_op->o_abandon )
1827 syncprov_qresp( opc, sm->sm_op, LDAP_SYNC_NEW_COOKIE );
1832 ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
1838 if ( si->si_chkops || si->si_chktime ) {
1839 /* Never checkpoint adding the context entry,
1842 if ( op->o_tag != LDAP_REQ_ADD ||
1843 !dn_match( &op->o_req_ndn, &si->si_contextdn )) {
1844 if ( si->si_chkops && si->si_numops >= si->si_chkops ) {
1848 if ( si->si_chktime &&
1849 (op->o_time - si->si_chklast >= si->si_chktime )) {
1850 if ( si->si_chklast ) {
1852 si->si_chklast = op->o_time;
1859 ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
1862 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
1863 syncprov_checkpoint( op, rs, on );
1864 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
1867 /* only update consumer ctx if this is a newer csn */
1868 if ( csn_changed ) {
1869 opc->sctxcsn = maxcsn;
1872 /* Handle any persistent searches */
1873 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1874 have_psearches = ( si->si_ops != NULL );
1875 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1876 if ( have_psearches ) {
1879 case LDAP_REQ_MODIFY:
1880 case LDAP_REQ_MODRDN:
1881 case LDAP_REQ_EXTENDED:
1882 syncprov_matchops( op, opc, 0 );
1884 case LDAP_REQ_DELETE:
1885 /* for each match in opc->smatches:
1888 for ( sm = opc->smatches; sm; sm=sm->sm_next ) {
1889 if ( sm->sm_op->s_op->o_abandon )
1891 syncprov_qresp( opc, sm->sm_op, LDAP_SYNC_DELETE );
1897 /* Add any log records */
1898 if ( si->si_logs && op->o_tag != LDAP_REQ_ADD ) {
1899 syncprov_add_slog( op );
1901 leave: ldap_pvt_thread_mutex_unlock( &si->si_resp_mutex );
1903 return SLAP_CB_CONTINUE;
1906 /* We don't use a subentry to store the context CSN any more.
1907 * We expose the current context CSN as an operational attribute
1908 * of the suffix entry.
1911 syncprov_op_compare( Operation *op, SlapReply *rs )
1913 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1914 syncprov_info_t *si = on->on_bi.bi_private;
1915 int rc = SLAP_CB_CONTINUE;
1917 if ( dn_match( &op->o_req_ndn, &si->si_contextdn ) &&
1918 op->oq_compare.rs_ava->aa_desc == slap_schema.si_ad_contextCSN )
1923 e.e_name = si->si_contextdn;
1924 e.e_nname = si->si_contextdn;
1927 a.a_desc = slap_schema.si_ad_contextCSN;
1929 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
1931 a.a_vals = si->si_ctxcsn;
1932 a.a_nvals = a.a_vals;
1933 a.a_numvals = si->si_numcsns;
1935 rs->sr_err = access_allowed( op, &e, op->oq_compare.rs_ava->aa_desc,
1936 &op->oq_compare.rs_ava->aa_value, ACL_COMPARE, NULL );
1937 if ( ! rs->sr_err ) {
1938 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1939 goto return_results;
1942 if ( get_assert( op ) &&
1943 ( test_filter( op, &e, get_assertion( op ) ) != LDAP_COMPARE_TRUE ) )
1945 rs->sr_err = LDAP_ASSERTION_FAILED;
1946 goto return_results;
1950 rs->sr_err = LDAP_COMPARE_FALSE;
1952 if ( attr_valfind( &a,
1953 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
1954 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
1955 &op->oq_compare.rs_ava->aa_value, NULL, op->o_tmpmemctx ) == 0 )
1957 rs->sr_err = LDAP_COMPARE_TRUE;
1962 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
1964 send_ldap_result( op, rs );
1966 if( rs->sr_err == LDAP_COMPARE_FALSE || rs->sr_err == LDAP_COMPARE_TRUE ) {
1967 rs->sr_err = LDAP_SUCCESS;
1976 syncprov_op_mod( Operation *op, SlapReply *rs )
1978 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1979 syncprov_info_t *si = on->on_bi.bi_private;
1982 int have_psearches, cbsize;
1984 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1985 have_psearches = ( si->si_ops != NULL );
1987 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1989 cbsize = sizeof(slap_callback) + sizeof(opcookie) +
1990 (have_psearches ? sizeof(modinst) : 0 );
1992 cb = op->o_tmpcalloc(1, cbsize, op->o_tmpmemctx);
1993 opc = (opcookie *)(cb+1);
1995 cb->sc_response = syncprov_op_response;
1996 cb->sc_cleanup = syncprov_op_cleanup;
1997 cb->sc_private = opc;
1998 cb->sc_next = op->o_callback;
1999 op->o_callback = cb;
2003 if ( op->o_csn.bv_val ) {
2004 opc->osid = slap_parse_csn_sid( &op->o_csn );
2006 if ( op->o_controls ) {
2007 struct sync_cookie *scook =
2008 op->o_controls[slap_cids.sc_LDAPsync];
2010 opc->rsid = scook->sid;
2013 /* If there are active persistent searches, lock this operation.
2014 * See seqmod.c for the locking logic on its own.
2016 if ( have_psearches ) {
2017 modtarget *mt, mtdummy;
2020 mi = (modinst *)(opc+1);
2023 /* See if we're already modifying this entry... */
2025 ldap_pvt_thread_mutex_lock( &si->si_mods_mutex );
2026 mt = avl_find( si->si_mods, &mtdummy, sp_avl_cmp );
2028 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
2029 if ( mt->mt_mods == NULL ) {
2030 /* Cannot reuse this mt, as another thread is about
2031 * to release it in syncprov_op_cleanup.
2033 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
2038 ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
2039 mt->mt_tail->mi_next = mi;
2041 /* wait for this op to get to head of list */
2042 while ( mt->mt_mods != mi ) {
2043 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
2044 /* FIXME: if dynamic config can delete overlays or
2045 * databases we'll have to check for cleanup here.
2046 * Currently it's not an issue because there are
2047 * no dynamic config deletes...
2049 if ( slapd_shutdown )
2050 return SLAPD_ABANDON;
2052 if ( !ldap_pvt_thread_pool_pausecheck( &connection_pool ))
2053 ldap_pvt_thread_yield();
2054 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
2056 /* clean up if the caller is giving up */
2057 if ( op->o_abandon ) {
2059 for ( m2 = mt->mt_mods; m2->mi_next != mi;
2061 m2->mi_next = mi->mi_next;
2062 if ( mt->mt_tail == mi ) mt->mt_tail = m2;
2063 op->o_tmpfree( cb, op->o_tmpmemctx );
2064 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
2065 return SLAPD_ABANDON;
2068 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
2070 /* Record that we're modifying this entry now */
2071 mt = ch_malloc( sizeof(modtarget) );
2074 mt->mt_op = mi->mi_op;
2075 ldap_pvt_thread_mutex_init( &mt->mt_mutex );
2076 avl_insert( &si->si_mods, mt, sp_avl_cmp, avl_dup_error );
2077 ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
2082 if (( have_psearches || si->si_logs ) && op->o_tag != LDAP_REQ_ADD )
2083 syncprov_matchops( op, opc, 1 );
2085 return SLAP_CB_CONTINUE;
2089 syncprov_op_extended( Operation *op, SlapReply *rs )
2091 if ( exop_is_write( op ))
2092 return syncprov_op_mod( op, rs );
2094 return SLAP_CB_CONTINUE;
2097 typedef struct searchstate {
2098 slap_overinst *ss_on;
2100 BerVarray ss_ctxcsn;
2103 #define SS_PRESENT 0x01
2104 #define SS_CHANGED 0x02
2109 syncprov_search_cleanup( Operation *op, SlapReply *rs )
2111 if ( rs->sr_ctrls ) {
2112 op->o_tmpfree( rs->sr_ctrls[0], op->o_tmpmemctx );
2113 op->o_tmpfree( rs->sr_ctrls, op->o_tmpmemctx );
2114 rs->sr_ctrls = NULL;
2119 typedef struct SyncOperationBuffer {
2123 AttributeName sob_extra; /* not always present */
2124 /* Further data allocated here */
2125 } SyncOperationBuffer;
2128 syncprov_detach_op( Operation *op, syncops *so, slap_overinst *on )
2130 SyncOperationBuffer *sopbuf2;
2135 GroupAssertion *g1, *g2;
2137 /* count the search attrs */
2138 for (i=0; op->ors_attrs && !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++) {
2139 alen += op->ors_attrs[i].an_name.bv_len + 1;
2141 /* Make a new copy of the operation */
2142 size = offsetof( SyncOperationBuffer, sob_extra ) +
2143 (i ? ( (i+1) * sizeof(AttributeName) + alen) : 0) +
2144 op->o_req_dn.bv_len + 1 +
2145 op->o_req_ndn.bv_len + 1 +
2146 op->o_ndn.bv_len + 1 +
2147 so->s_filterstr.bv_len + 1;
2148 sopbuf2 = ch_calloc( 1, size );
2149 op2 = &sopbuf2->sob_op;
2150 op2->o_hdr = &sopbuf2->sob_hdr;
2151 LDAP_SLIST_FIRST(&op2->o_extra) = &sopbuf2->sob_oe;
2153 /* Copy the fields we care about explicitly, leave the rest alone */
2154 *op2->o_hdr = *op->o_hdr;
2155 op2->o_tag = op->o_tag;
2156 op2->o_time = op->o_time;
2157 op2->o_bd = on->on_info->oi_origdb;
2158 op2->o_request = op->o_request;
2159 op2->o_managedsait = op->o_managedsait;
2160 LDAP_SLIST_FIRST(&op2->o_extra)->oe_key = on;
2161 LDAP_SLIST_NEXT(LDAP_SLIST_FIRST(&op2->o_extra), oe_next) = NULL;
2163 ptr = (char *) sopbuf2 + offsetof( SyncOperationBuffer, sob_extra );
2165 op2->ors_attrs = (AttributeName *) ptr;
2166 ptr = (char *) &op2->ors_attrs[i+1];
2167 for (i=0; !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++) {
2168 op2->ors_attrs[i] = op->ors_attrs[i];
2169 op2->ors_attrs[i].an_name.bv_val = ptr;
2170 ptr = lutil_strcopy( ptr, op->ors_attrs[i].an_name.bv_val ) + 1;
2172 BER_BVZERO( &op2->ors_attrs[i].an_name );
2175 op2->o_authz = op->o_authz;
2176 op2->o_ndn.bv_val = ptr;
2177 ptr = lutil_strcopy(ptr, op->o_ndn.bv_val) + 1;
2178 op2->o_dn = op2->o_ndn;
2179 op2->o_req_dn.bv_len = op->o_req_dn.bv_len;
2180 op2->o_req_dn.bv_val = ptr;
2181 ptr = lutil_strcopy(ptr, op->o_req_dn.bv_val) + 1;
2182 op2->o_req_ndn.bv_len = op->o_req_ndn.bv_len;
2183 op2->o_req_ndn.bv_val = ptr;
2184 ptr = lutil_strcopy(ptr, op->o_req_ndn.bv_val) + 1;
2185 op2->ors_filterstr.bv_val = ptr;
2186 strcpy( ptr, so->s_filterstr.bv_val );
2187 op2->ors_filterstr.bv_len = so->s_filterstr.bv_len;
2189 /* Skip the AND/GE clause that we stuck on in front */
2190 if ( so->s_flags & PS_FIX_FILTER ) {
2191 op2->ors_filter = op->ors_filter->f_and->f_next;
2192 so->s_flags ^= PS_FIX_FILTER;
2194 op2->ors_filter = op->ors_filter;
2196 op2->ors_filter = filter_dup( op2->ors_filter, NULL );
2199 /* Copy any cached group ACLs individually */
2200 op2->o_groups = NULL;
2201 for ( g1=op->o_groups; g1; g1=g1->ga_next ) {
2202 g2 = ch_malloc( sizeof(GroupAssertion) + g1->ga_len );
2204 strcpy( g2->ga_ndn, g1->ga_ndn );
2205 g2->ga_next = op2->o_groups;
2208 /* Don't allow any further group caching */
2209 op2->o_do_not_cache = 1;
2211 /* Add op2 to conn so abandon will find us */
2212 op->o_conn->c_n_ops_executing++;
2213 op->o_conn->c_n_ops_completed--;
2214 LDAP_STAILQ_INSERT_TAIL( &op->o_conn->c_ops, op2, o_next );
2215 so->s_flags |= PS_IS_DETACHED;
2217 /* Prevent anyone else from trying to send a result for this op */
2222 syncprov_search_response( Operation *op, SlapReply *rs )
2224 searchstate *ss = op->o_callback->sc_private;
2225 slap_overinst *on = ss->ss_on;
2226 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2227 sync_control *srs = op->o_controls[slap_cids.sc_LDAPsync];
2229 if ( rs->sr_type == REP_SEARCH || rs->sr_type == REP_SEARCHREF ) {
2231 /* If we got a referral without a referral object, there's
2232 * something missing that we cannot replicate. Just ignore it.
2233 * The consumer will abort because we didn't send the expected
2236 if ( !rs->sr_entry ) {
2237 assert( rs->sr_entry != NULL );
2238 Debug( LDAP_DEBUG_ANY, "bogus referral in context\n",0,0,0 );
2239 return SLAP_CB_CONTINUE;
2241 a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_entryCSN );
2242 if ( a == NULL && rs->sr_operational_attrs != NULL ) {
2243 a = attr_find( rs->sr_operational_attrs, slap_schema.si_ad_entryCSN );
2247 sid = slap_parse_csn_sid( &a->a_nvals[0] );
2249 /* Don't send changed entries back to the originator */
2250 if ( sid == srs->sr_state.sid && srs->sr_state.numcsns ) {
2251 Debug( LDAP_DEBUG_SYNC,
2252 "Entry %s changed by peer, ignored\n",
2253 rs->sr_entry->e_name.bv_val, 0, 0 );
2254 return LDAP_SUCCESS;
2257 /* If not a persistent search */
2259 /* Make sure entry is less than the snapshot'd contextCSN */
2260 for ( i=0; i<ss->ss_numcsns; i++ ) {
2261 if ( sid == ss->ss_sids[i] && ber_bvcmp( &a->a_nvals[0],
2262 &ss->ss_ctxcsn[i] ) > 0 ) {
2263 Debug( LDAP_DEBUG_SYNC,
2264 "Entry %s CSN %s greater than snapshot %s\n",
2265 rs->sr_entry->e_name.bv_val,
2266 a->a_nvals[0].bv_val,
2267 ss->ss_ctxcsn[i].bv_val );
2268 return LDAP_SUCCESS;
2273 /* Don't send old entries twice */
2274 if ( srs->sr_state.ctxcsn ) {
2275 for ( i=0; i<srs->sr_state.numcsns; i++ ) {
2276 if ( sid == srs->sr_state.sids[i] &&
2277 ber_bvcmp( &a->a_nvals[0],
2278 &srs->sr_state.ctxcsn[i] )<= 0 ) {
2279 Debug( LDAP_DEBUG_SYNC,
2280 "Entry %s CSN %s older or equal to ctx %s\n",
2281 rs->sr_entry->e_name.bv_val,
2282 a->a_nvals[0].bv_val,
2283 srs->sr_state.ctxcsn[i].bv_val );
2284 return LDAP_SUCCESS;
2289 rs->sr_ctrls = op->o_tmpalloc( sizeof(LDAPControl *)*2,
2291 rs->sr_ctrls[1] = NULL;
2292 /* If we're in delta-sync mode, always send a cookie */
2293 if ( si->si_nopres && si->si_usehint && a ) {
2294 struct berval cookie;
2295 slap_compose_sync_cookie( op, &cookie, a->a_nvals, srs->sr_state.rid, slap_serverID ? slap_serverID : -1 );
2296 rs->sr_err = syncprov_state_ctrl( op, rs, rs->sr_entry,
2297 LDAP_SYNC_ADD, rs->sr_ctrls, 0, 1, &cookie );
2299 rs->sr_err = syncprov_state_ctrl( op, rs, rs->sr_entry,
2300 LDAP_SYNC_ADD, rs->sr_ctrls, 0, 0, NULL );
2302 } else if ( rs->sr_type == REP_RESULT && rs->sr_err == LDAP_SUCCESS ) {
2303 struct berval cookie = BER_BVNULL;
2305 if ( ( ss->ss_flags & SS_CHANGED ) &&
2306 ss->ss_ctxcsn && !BER_BVISNULL( &ss->ss_ctxcsn[0] )) {
2307 slap_compose_sync_cookie( op, &cookie, ss->ss_ctxcsn,
2308 srs->sr_state.rid, slap_serverID ? slap_serverID : -1 );
2310 Debug( LDAP_DEBUG_SYNC, "syncprov_search_response: cookie=%s\n", cookie.bv_val, 0, 0 );
2313 /* Is this a regular refresh?
2314 * Note: refresh never gets here if there were no changes
2317 rs->sr_ctrls = op->o_tmpalloc( sizeof(LDAPControl *)*2,
2319 rs->sr_ctrls[1] = NULL;
2320 rs->sr_err = syncprov_done_ctrl( op, rs, rs->sr_ctrls,
2321 0, 1, &cookie, ( ss->ss_flags & SS_PRESENT ) ? LDAP_SYNC_REFRESH_PRESENTS :
2322 LDAP_SYNC_REFRESH_DELETES );
2323 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
2325 /* It's RefreshAndPersist, transition to Persist phase */
2326 syncprov_sendinfo( op, rs, ( ss->ss_flags & SS_PRESENT ) ?
2327 LDAP_TAG_SYNC_REFRESH_PRESENT : LDAP_TAG_SYNC_REFRESH_DELETE,
2328 ( ss->ss_flags & SS_CHANGED ) ? &cookie : NULL,
2330 if ( !BER_BVISNULL( &cookie ))
2331 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
2333 /* Detach this Op from frontend control */
2334 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
2336 /* But not if this connection was closed along the way */
2337 if ( op->o_abandon ) {
2338 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
2339 /* syncprov_ab_cleanup will free this syncop */
2340 return SLAPD_ABANDON;
2343 ldap_pvt_thread_mutex_lock( &ss->ss_so->s_mutex );
2344 /* Turn off the refreshing flag */
2345 ss->ss_so->s_flags ^= PS_IS_REFRESHING;
2347 syncprov_detach_op( op, ss->ss_so, on );
2349 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
2351 /* If there are queued responses, fire them off */
2352 if ( ss->ss_so->s_res )
2353 syncprov_qstart( ss->ss_so );
2354 ldap_pvt_thread_mutex_unlock( &ss->ss_so->s_mutex );
2357 return LDAP_SUCCESS;
2361 return SLAP_CB_CONTINUE;
2365 syncprov_op_search( Operation *op, SlapReply *rs )
2367 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
2368 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2370 int gotstate = 0, changed = 0, do_present = 0;
2371 syncops *sop = NULL;
2375 int i, *sids, numcsns;
2376 struct berval mincsn;
2378 if ( !(op->o_sync_mode & SLAP_SYNC_REFRESH) ) return SLAP_CB_CONTINUE;
2380 if ( op->ors_deref & LDAP_DEREF_SEARCHING ) {
2381 send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR, "illegal value for derefAliases" );
2385 srs = op->o_controls[slap_cids.sc_LDAPsync];
2387 /* If this is a persistent search, set it up right away */
2388 if ( op->o_sync_mode & SLAP_SYNC_PERSIST ) {
2398 so.s_flags = PS_IS_REFRESHING | PS_FIND_BASE;
2399 /* syncprov_findbase expects to be called as a callback... */
2400 sc.sc_private = &opc;
2402 ldap_pvt_thread_mutex_init( &so.s_mutex );
2403 cb = op->o_callback;
2404 op->o_callback = ≻
2405 rs->sr_err = syncprov_findbase( op, &fc );
2406 op->o_callback = cb;
2407 ldap_pvt_thread_mutex_destroy( &so.s_mutex );
2409 if ( rs->sr_err != LDAP_SUCCESS ) {
2410 send_ldap_result( op, rs );
2413 sop = ch_malloc( sizeof( syncops ));
2415 ldap_pvt_thread_mutex_init( &sop->s_mutex );
2416 sop->s_rid = srs->sr_state.rid;
2417 sop->s_sid = srs->sr_state.sid;
2420 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
2421 while ( si->si_active ) {
2422 /* Wait for active mods to finish before proceeding, as they
2423 * may already have inspected the si_ops list looking for
2424 * consumers to replicate the change to. Using the log
2425 * doesn't help, as we may finish playing it before the
2426 * active mods gets added to it.
2428 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
2429 if ( slapd_shutdown )
2430 return SLAPD_ABANDON;
2431 if ( !ldap_pvt_thread_pool_pausecheck( &connection_pool ))
2432 ldap_pvt_thread_yield();
2433 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
2435 sop->s_next = si->si_ops;
2437 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
2440 /* snapshot the ctxcsn */
2441 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
2442 numcsns = si->si_numcsns;
2444 ber_bvarray_dup_x( &ctxcsn, si->si_ctxcsn, op->o_tmpmemctx );
2445 sids = op->o_tmpalloc( numcsns * sizeof(int), op->o_tmpmemctx );
2446 for ( i=0; i<numcsns; i++ )
2447 sids[i] = si->si_sids[i];
2452 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
2454 /* If we have a cookie, handle the PRESENT lookups */
2455 if ( srs->sr_state.ctxcsn ) {
2459 /* If we don't have any CSN of our own yet, pretend nothing
2465 if ( !si->si_nopres )
2466 do_present = SS_PRESENT;
2468 /* If there are SIDs we don't recognize in the cookie, drop them */
2469 for (i=0; i<srs->sr_state.numcsns; ) {
2470 for (j=0; j<numcsns; j++) {
2471 if ( srs->sr_state.sids[i] == sids[j] ) {
2476 if ( j == numcsns ) {
2477 struct berval tmp = srs->sr_state.ctxcsn[i];
2478 j = srs->sr_state.numcsns - 1;
2479 srs->sr_state.ctxcsn[i] = srs->sr_state.ctxcsn[j];
2481 srs->sr_state.ctxcsn[j] = tmp;
2482 srs->sr_state.numcsns = j;
2483 srs->sr_state.sids[i] = srs->sr_state.sids[j];
2489 /* Find the smallest CSN */
2490 mincsn = srs->sr_state.ctxcsn[0];
2491 for ( i=1; i<srs->sr_state.numcsns; i++ ) {
2492 if ( ber_bvcmp( &mincsn, &srs->sr_state.ctxcsn[i] ) > 0 )
2493 mincsn = srs->sr_state.ctxcsn[i];
2496 /* If nothing has changed, shortcut it */
2497 if ( srs->sr_state.numcsns == numcsns ) {
2499 for ( i=0; i<srs->sr_state.numcsns; i++ ) {
2500 for ( j=0; j<numcsns; j++ ) {
2501 if ( srs->sr_state.sids[i] != sids[j] )
2503 newer = ber_bvcmp( &srs->sr_state.ctxcsn[i], &ctxcsn[j] );
2504 /* If our state is newer, tell consumer about changes */
2506 changed = SS_CHANGED;
2507 else if ( newer > 0 ) {
2508 /* our state is older, complain to consumer */
2509 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
2510 rs->sr_text = "consumer state is newer than provider!";
2513 syncops **sp = &si->si_ops;
2515 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
2516 while ( *sp != sop )
2517 sp = &(*sp)->s_next;
2519 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
2522 rs->sr_ctrls = NULL;
2523 send_ldap_result( op, rs );
2533 no_change: if ( !(op->o_sync_mode & SLAP_SYNC_PERSIST) ) {
2534 LDAPControl *ctrls[2];
2538 syncprov_done_ctrl( op, rs, ctrls, 0, 0,
2539 NULL, LDAP_SYNC_REFRESH_DELETES );
2540 rs->sr_ctrls = ctrls;
2541 rs->sr_err = LDAP_SUCCESS;
2542 send_ldap_result( op, rs );
2543 rs->sr_ctrls = NULL;
2549 /* consumer doesn't have the right number of CSNs */
2550 changed = SS_CHANGED;
2552 /* Do we have a sessionlog for this search? */
2555 ldap_pvt_thread_mutex_lock( &sl->sl_mutex );
2556 /* Are there any log entries, and is the consumer state
2557 * present in the session log?
2559 if ( sl->sl_num > 0 && ber_bvcmp( &mincsn, &sl->sl_mincsn ) >= 0 ) {
2561 /* mutex is unlocked in playlog */
2562 syncprov_playlog( op, rs, sl, srs, ctxcsn, numcsns, sids );
2564 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
2567 /* Is the CSN still present in the database? */
2568 if ( syncprov_findcsn( op, FIND_CSN ) != LDAP_SUCCESS ) {
2569 /* No, so a reload is required */
2570 /* the 2.2 consumer doesn't send this hint */
2571 if ( si->si_usehint && srs->sr_rhint == 0 ) {
2573 ber_bvarray_free_x( ctxcsn, op->o_tmpmemctx );
2575 op->o_tmpfree( sids, op->o_tmpmemctx );
2576 rs->sr_err = LDAP_SYNC_REFRESH_REQUIRED;
2577 rs->sr_text = "sync cookie is stale";
2580 if ( srs->sr_state.ctxcsn ) {
2581 ber_bvarray_free_x( srs->sr_state.ctxcsn, op->o_tmpmemctx );
2582 srs->sr_state.ctxcsn = NULL;
2584 if ( srs->sr_state.sids ) {
2585 slap_sl_free( srs->sr_state.sids, op->o_tmpmemctx );
2586 srs->sr_state.sids = NULL;
2588 srs->sr_state.numcsns = 0;
2591 /* If changed and doing Present lookup, send Present UUIDs */
2592 if ( do_present && syncprov_findcsn( op, FIND_PRESENT ) !=
2595 ber_bvarray_free_x( ctxcsn, op->o_tmpmemctx );
2597 op->o_tmpfree( sids, op->o_tmpmemctx );
2602 /* No consumer state, assume something has changed */
2603 changed = SS_CHANGED;
2607 /* Append CSN range to search filter, save original filter
2608 * for persistent search evaluation
2611 sop->s_filterstr= op->ors_filterstr;
2614 /* If something changed, find the changes */
2615 if ( gotstate && changed ) {
2616 Filter *fand, *fava;
2618 fand = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
2619 fand->f_choice = LDAP_FILTER_AND;
2620 fand->f_next = NULL;
2621 fava = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
2623 fava->f_choice = LDAP_FILTER_GE;
2624 fava->f_ava = op->o_tmpalloc( sizeof(AttributeAssertion), op->o_tmpmemctx );
2625 fava->f_ava->aa_desc = slap_schema.si_ad_entryCSN;
2626 #ifdef LDAP_COMP_MATCH
2627 fava->f_ava->aa_cf = NULL;
2629 ber_dupbv_x( &fava->f_ava->aa_value, &mincsn, op->o_tmpmemctx );
2630 fava->f_next = op->ors_filter;
2632 ldap_pvt_thread_mutex_lock( &sop->s_mutex );
2633 op->ors_filter = fand;
2634 filter2bv_x( op, op->ors_filter, &op->ors_filterstr );
2636 sop->s_flags |= PS_FIX_FILTER;
2637 ldap_pvt_thread_mutex_unlock( &sop->s_mutex );
2641 /* Let our callback add needed info to returned entries */
2642 cb = op->o_tmpcalloc(1, sizeof(slap_callback)+sizeof(searchstate), op->o_tmpmemctx);
2643 ss = (searchstate *)(cb+1);
2646 ss->ss_flags = do_present | changed;
2647 ss->ss_ctxcsn = ctxcsn;
2648 ss->ss_numcsns = numcsns;
2650 cb->sc_response = syncprov_search_response;
2651 cb->sc_cleanup = syncprov_search_cleanup;
2652 cb->sc_private = ss;
2653 cb->sc_next = op->o_callback;
2654 op->o_callback = cb;
2656 /* If this is a persistent search and no changes were reported during
2657 * the refresh phase, just invoke the response callback to transition
2658 * us into persist phase
2661 rs->sr_err = LDAP_SUCCESS;
2662 rs->sr_nentries = 0;
2663 send_ldap_result( op, rs );
2666 return SLAP_CB_CONTINUE;
2670 syncprov_operational(
2674 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
2675 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2677 /* This prevents generating unnecessarily; frontend will strip
2678 * any statically stored copy.
2680 if ( op->o_sync != SLAP_CONTROL_NONE )
2681 return SLAP_CB_CONTINUE;
2683 if ( rs->sr_entry &&
2684 dn_match( &rs->sr_entry->e_nname, &si->si_contextdn )) {
2686 if ( SLAP_OPATTRS( rs->sr_attr_flags ) ||
2687 ad_inlist( slap_schema.si_ad_contextCSN, rs->sr_attrs )) {
2688 Attribute *a, **ap = NULL;
2690 for ( a=rs->sr_entry->e_attrs; a; a=a->a_next ) {
2691 if ( a->a_desc == slap_schema.si_ad_contextCSN )
2695 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
2696 if ( si->si_ctxcsn ) {
2698 for ( ap = &rs->sr_operational_attrs; *ap;
2699 ap=&(*ap)->a_next );
2701 a = attr_alloc( slap_schema.si_ad_contextCSN );
2706 if ( !(rs->sr_flags & REP_ENTRY_MODIFIABLE) ) {
2707 Entry *e = entry_dup( rs->sr_entry );
2708 if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
2709 overlay_entry_release_ov( op, rs->sr_entry, 0, on );
2710 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
2711 } else if ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) {
2712 entry_free( rs->sr_entry );
2716 REP_ENTRY_MODIFIABLE|REP_ENTRY_MUSTBEFREED;
2717 a = attr_find( rs->sr_entry->e_attrs,
2718 slap_schema.si_ad_contextCSN );
2720 if ( a->a_nvals != a->a_vals ) {
2721 ber_bvarray_free( a->a_nvals );
2724 ber_bvarray_free( a->a_vals );
2728 attr_valadd( a, si->si_ctxcsn, si->si_ctxcsn, si->si_numcsns );
2730 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
2733 return SLAP_CB_CONTINUE;
2743 static ConfigDriver sp_cf_gen;
2745 static ConfigTable spcfg[] = {
2746 { "syncprov-checkpoint", "ops> <minutes", 3, 3, 0, ARG_MAGIC|SP_CHKPT,
2747 sp_cf_gen, "( OLcfgOvAt:1.1 NAME 'olcSpCheckpoint' "
2748 "DESC 'ContextCSN checkpoint interval in ops and minutes' "
2749 "SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
2750 { "syncprov-sessionlog", "ops", 2, 2, 0, ARG_INT|ARG_MAGIC|SP_SESSL,
2751 sp_cf_gen, "( OLcfgOvAt:1.2 NAME 'olcSpSessionlog' "
2752 "DESC 'Session log size in ops' "
2753 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
2754 { "syncprov-nopresent", NULL, 2, 2, 0, ARG_ON_OFF|ARG_MAGIC|SP_NOPRES,
2755 sp_cf_gen, "( OLcfgOvAt:1.3 NAME 'olcSpNoPresent' "
2756 "DESC 'Omit Present phase processing' "
2757 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
2758 { "syncprov-reloadhint", NULL, 2, 2, 0, ARG_ON_OFF|ARG_MAGIC|SP_USEHINT,
2759 sp_cf_gen, "( OLcfgOvAt:1.4 NAME 'olcSpReloadHint' "
2760 "DESC 'Observe Reload Hint in Request control' "
2761 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
2762 { NULL, NULL, 0, 0, 0, ARG_IGNORED }
2765 static ConfigOCs spocs[] = {
2766 { "( OLcfgOvOc:1.1 "
2767 "NAME 'olcSyncProvConfig' "
2768 "DESC 'SyncRepl Provider configuration' "
2769 "SUP olcOverlayConfig "
2770 "MAY ( olcSpCheckpoint "
2771 "$ olcSpSessionlog "
2773 "$ olcSpReloadHint "
2775 Cft_Overlay, spcfg },
2780 sp_cf_gen(ConfigArgs *c)
2782 slap_overinst *on = (slap_overinst *)c->bi;
2783 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2786 if ( c->op == SLAP_CONFIG_EMIT ) {
2787 switch ( c->type ) {
2789 if ( si->si_chkops || si->si_chktime ) {
2791 /* we assume si_chktime is a multiple of 60
2792 * because the parsed value was originally
2793 * multiplied by 60 */
2794 bv.bv_len = snprintf( c->cr_msg, sizeof( c->cr_msg ),
2795 "%d %d", si->si_chkops, si->si_chktime/60 );
2796 if ( bv.bv_len >= sizeof( c->cr_msg ) ) {
2799 bv.bv_val = c->cr_msg;
2800 value_add_one( &c->rvalue_vals, &bv );
2807 if ( si->si_logs ) {
2808 c->value_int = si->si_logs->sl_size;
2814 if ( si->si_nopres ) {
2821 if ( si->si_usehint ) {
2829 } else if ( c->op == LDAP_MOD_DELETE ) {
2830 switch ( c->type ) {
2837 si->si_logs->sl_size = 0;
2839 rc = LDAP_NO_SUCH_ATTRIBUTE;
2842 if ( si->si_nopres )
2845 rc = LDAP_NO_SUCH_ATTRIBUTE;
2848 if ( si->si_usehint )
2851 rc = LDAP_NO_SUCH_ATTRIBUTE;
2856 switch ( c->type ) {
2858 if ( lutil_atoi( &si->si_chkops, c->argv[1] ) != 0 ) {
2859 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s unable to parse checkpoint ops # \"%s\"",
2860 c->argv[0], c->argv[1] );
2861 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2862 "%s: %s\n", c->log, c->cr_msg, 0 );
2863 return ARG_BAD_CONF;
2865 if ( si->si_chkops <= 0 ) {
2866 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s invalid checkpoint ops # \"%d\"",
2867 c->argv[0], si->si_chkops );
2868 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2869 "%s: %s\n", c->log, c->cr_msg, 0 );
2870 return ARG_BAD_CONF;
2872 if ( lutil_atoi( &si->si_chktime, c->argv[2] ) != 0 ) {
2873 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s unable to parse checkpoint time \"%s\"",
2874 c->argv[0], c->argv[1] );
2875 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2876 "%s: %s\n", c->log, c->cr_msg, 0 );
2877 return ARG_BAD_CONF;
2879 if ( si->si_chktime <= 0 ) {
2880 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s invalid checkpoint time \"%d\"",
2881 c->argv[0], si->si_chkops );
2882 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2883 "%s: %s\n", c->log, c->cr_msg, 0 );
2884 return ARG_BAD_CONF;
2886 si->si_chktime *= 60;
2890 int size = c->value_int;
2893 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s size %d is negative",
2895 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2896 "%s: %s\n", c->log, c->cr_msg, 0 );
2897 return ARG_BAD_CONF;
2901 sl = ch_malloc( sizeof( sessionlog ) + LDAP_PVT_CSNSTR_BUFSIZE );
2902 sl->sl_mincsn.bv_val = (char *)(sl+1);
2903 sl->sl_mincsn.bv_len = 0;
2905 sl->sl_head = sl->sl_tail = NULL;
2906 ldap_pvt_thread_mutex_init( &sl->sl_mutex );
2913 si->si_nopres = c->value_int;
2916 si->si_usehint = c->value_int;
2922 /* ITS#3456 we cannot run this search on the main thread, must use a
2923 * child thread in order to insure we have a big enough stack.
2930 syncprov_findcsn( ptr, FIND_MAXCSN );
2934 /* Read any existing contextCSN from the underlying db.
2935 * Then search for any entries newer than that. If no value exists,
2936 * just generate it. Cache whatever result.
2944 slap_overinst *on = (slap_overinst *) be->bd_info;
2945 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2947 Connection conn = { 0 };
2948 OperationBuffer opbuf;
2953 void *thrctx = NULL;
2955 if ( !SLAP_LASTMOD( be )) {
2956 Debug( LDAP_DEBUG_ANY,
2957 "syncprov_db_open: invalid config, lastmod must be enabled\n", 0, 0, 0 );
2961 if ( slapMode & SLAP_TOOL_MODE ) {
2965 rc = overlay_register_control( be, LDAP_CONTROL_SYNC );
2970 thrctx = ldap_pvt_thread_pool_context();
2971 connection_fake_init2( &conn, &opbuf, thrctx, 0 );
2974 op->o_dn = be->be_rootdn;
2975 op->o_ndn = be->be_rootndn;
2977 if ( SLAP_SYNC_SUBENTRY( be )) {
2978 build_new_dn( &si->si_contextdn, be->be_nsuffix,
2979 (struct berval *)&slap_ldapsync_cn_bv, NULL );
2981 si->si_contextdn = be->be_nsuffix[0];
2983 rc = overlay_entry_get_ov( op, &si->si_contextdn, NULL,
2984 slap_schema.si_ad_contextCSN, 0, &e, on );
2987 ldap_pvt_thread_t tid;
2989 a = attr_find( e->e_attrs, slap_schema.si_ad_contextCSN );
2991 ber_bvarray_dup_x( &si->si_ctxcsn, a->a_vals, NULL );
2992 si->si_numcsns = a->a_numvals;
2993 si->si_sids = slap_parse_csn_sids( si->si_ctxcsn, a->a_numvals, NULL );
2995 overlay_entry_release_ov( op, e, 0, on );
2996 if ( si->si_ctxcsn && !SLAP_DBCLEAN( be )) {
2997 op->o_req_dn = be->be_suffix[0];
2998 op->o_req_ndn = be->be_nsuffix[0];
2999 op->ors_scope = LDAP_SCOPE_SUBTREE;
3000 ldap_pvt_thread_create( &tid, 0, syncprov_db_otask, op );
3001 ldap_pvt_thread_join( tid, NULL );
3005 /* Didn't find a contextCSN, should we generate one? */
3006 if ( !si->si_ctxcsn ) {
3007 char csnbuf[ LDAP_PVT_CSNSTR_BUFSIZE ];
3010 if ( SLAP_SYNC_SHADOW( op->o_bd )) {
3011 /* If we're also a consumer, then don't generate anything.
3012 * Wait for our provider to send it to us, or for a local
3013 * modify if we have multimaster.
3017 csn.bv_val = csnbuf;
3018 csn.bv_len = sizeof( csnbuf );
3019 slap_get_csn( op, &csn, 0 );
3020 value_add_one( &si->si_ctxcsn, &csn );
3022 si->si_sids = ch_malloc( sizeof(int) );
3023 si->si_sids[0] = slap_serverID;
3025 /* make sure we do a checkpoint on close */
3030 op->o_bd->bd_info = (BackendInfo *)on;
3034 /* Write the current contextCSN into the underlying db.
3042 slap_overinst *on = (slap_overinst *) be->bd_info;
3043 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
3044 #ifdef SLAP_CONFIG_DELETE
3045 syncops *so, *sonext;
3046 #endif /* SLAP_CONFIG_DELETE */
3048 if ( slapMode & SLAP_TOOL_MODE ) {
3051 if ( si->si_numops ) {
3052 Connection conn = {0};
3053 OperationBuffer opbuf;
3055 SlapReply rs = {REP_RESULT};
3058 thrctx = ldap_pvt_thread_pool_context();
3059 connection_fake_init2( &conn, &opbuf, thrctx, 0 );
3062 op->o_dn = be->be_rootdn;
3063 op->o_ndn = be->be_rootndn;
3064 syncprov_checkpoint( op, &rs, on );
3067 #ifdef SLAP_CONFIG_DELETE
3068 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
3069 for ( so=si->si_ops, sonext=so; so; so=sonext ) {
3070 SlapReply rs = {REP_RESULT};
3071 rs.sr_err = LDAP_UNAVAILABLE;
3072 send_ldap_result( so->s_op, &rs );
3074 syncprov_drop_psearch( so, 0);
3077 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
3078 overlay_unregister_control( be, LDAP_CONTROL_SYNC );
3079 #endif /* SLAP_CONFIG_DELETE */
3090 slap_overinst *on = (slap_overinst *)be->bd_info;
3091 syncprov_info_t *si;
3093 if ( SLAP_ISGLOBALOVERLAY( be ) ) {
3094 Debug( LDAP_DEBUG_ANY,
3095 "syncprov must be instantiated within a database.\n",
3100 si = ch_calloc(1, sizeof(syncprov_info_t));
3101 on->on_bi.bi_private = si;
3102 ldap_pvt_thread_rdwr_init( &si->si_csn_rwlock );
3103 ldap_pvt_thread_mutex_init( &si->si_ops_mutex );
3104 ldap_pvt_thread_mutex_init( &si->si_mods_mutex );
3105 ldap_pvt_thread_mutex_init( &si->si_resp_mutex );
3107 csn_anlist[0].an_desc = slap_schema.si_ad_entryCSN;
3108 csn_anlist[0].an_name = slap_schema.si_ad_entryCSN->ad_cname;
3109 csn_anlist[1].an_desc = slap_schema.si_ad_entryUUID;
3110 csn_anlist[1].an_name = slap_schema.si_ad_entryUUID->ad_cname;
3112 uuid_anlist[0].an_desc = slap_schema.si_ad_entryUUID;
3113 uuid_anlist[0].an_name = slap_schema.si_ad_entryUUID->ad_cname;
3119 syncprov_db_destroy(
3124 slap_overinst *on = (slap_overinst *)be->bd_info;
3125 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
3128 if ( si->si_logs ) {
3129 slog_entry *se = si->si_logs->sl_head;
3132 slog_entry *se_next = se->se_next;
3137 ch_free( si->si_logs );
3139 if ( si->si_ctxcsn )
3140 ber_bvarray_free( si->si_ctxcsn );
3142 ch_free( si->si_sids );
3143 ldap_pvt_thread_mutex_destroy( &si->si_resp_mutex );
3144 ldap_pvt_thread_mutex_destroy( &si->si_mods_mutex );
3145 ldap_pvt_thread_mutex_destroy( &si->si_ops_mutex );
3146 ldap_pvt_thread_rdwr_destroy( &si->si_csn_rwlock );
3153 static int syncprov_parseCtrl (
3159 BerElementBuffer berbuf;
3160 BerElement *ber = (BerElement *)&berbuf;
3163 struct berval cookie = BER_BVNULL;
3167 if ( op->o_sync != SLAP_CONTROL_NONE ) {
3168 rs->sr_text = "Sync control specified multiple times";
3169 return LDAP_PROTOCOL_ERROR;
3172 if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
3173 rs->sr_text = "Sync control specified with pagedResults control";
3174 return LDAP_PROTOCOL_ERROR;
3177 if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
3178 rs->sr_text = "Sync control value is absent";
3179 return LDAP_PROTOCOL_ERROR;
3182 if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
3183 rs->sr_text = "Sync control value is empty";
3184 return LDAP_PROTOCOL_ERROR;
3187 /* Parse the control value
3188 * syncRequestValue ::= SEQUENCE {
3193 * refreshAndPersist (3)
3195 * cookie syncCookie OPTIONAL
3199 ber_init2( ber, &ctrl->ldctl_value, 0 );
3201 if ( (tag = ber_scanf( ber, "{i" /*}*/, &mode )) == LBER_ERROR ) {
3202 rs->sr_text = "Sync control : mode decoding error";
3203 return LDAP_PROTOCOL_ERROR;
3207 case LDAP_SYNC_REFRESH_ONLY:
3208 mode = SLAP_SYNC_REFRESH;
3210 case LDAP_SYNC_REFRESH_AND_PERSIST:
3211 mode = SLAP_SYNC_REFRESH_AND_PERSIST;
3214 rs->sr_text = "Sync control : unknown update mode";
3215 return LDAP_PROTOCOL_ERROR;
3218 tag = ber_peek_tag( ber, &len );
3220 if ( tag == LDAP_TAG_SYNC_COOKIE ) {
3221 if (( ber_scanf( ber, /*{*/ "m", &cookie )) == LBER_ERROR ) {
3222 rs->sr_text = "Sync control : cookie decoding error";
3223 return LDAP_PROTOCOL_ERROR;
3225 tag = ber_peek_tag( ber, &len );
3227 if ( tag == LDAP_TAG_RELOAD_HINT ) {
3228 if (( ber_scanf( ber, /*{*/ "b", &rhint )) == LBER_ERROR ) {
3229 rs->sr_text = "Sync control : rhint decoding error";
3230 return LDAP_PROTOCOL_ERROR;
3233 if (( ber_scanf( ber, /*{*/ "}")) == LBER_ERROR ) {
3234 rs->sr_text = "Sync control : decoding error";
3235 return LDAP_PROTOCOL_ERROR;
3237 sr = op->o_tmpcalloc( 1, sizeof(struct sync_control), op->o_tmpmemctx );
3238 sr->sr_rhint = rhint;
3239 if (!BER_BVISNULL(&cookie)) {
3240 ber_dupbv_x( &sr->sr_state.octet_str, &cookie, op->o_tmpmemctx );
3241 /* If parse fails, pretend no cookie was sent */
3242 if ( slap_parse_sync_cookie( &sr->sr_state, op->o_tmpmemctx ) ||
3243 sr->sr_state.rid == -1 ) {
3244 if ( sr->sr_state.ctxcsn ) {
3245 ber_bvarray_free_x( sr->sr_state.ctxcsn, op->o_tmpmemctx );
3246 sr->sr_state.ctxcsn = NULL;
3248 sr->sr_state.numcsns = 0;
3252 op->o_controls[slap_cids.sc_LDAPsync] = sr;
3254 op->o_sync = ctrl->ldctl_iscritical
3255 ? SLAP_CONTROL_CRITICAL
3256 : SLAP_CONTROL_NONCRITICAL;
3258 op->o_sync_mode |= mode; /* o_sync_mode shares o_sync */
3260 return LDAP_SUCCESS;
3263 /* This overlay is set up for dynamic loading via moduleload. For static
3264 * configuration, you'll need to arrange for the slap_overinst to be
3265 * initialized and registered by some other function inside slapd.
3268 static slap_overinst syncprov;
3271 syncprov_initialize()
3275 rc = register_supported_control( LDAP_CONTROL_SYNC,
3276 SLAP_CTRL_SEARCH, NULL,
3277 syncprov_parseCtrl, &slap_cids.sc_LDAPsync );
3278 if ( rc != LDAP_SUCCESS ) {
3279 Debug( LDAP_DEBUG_ANY,
3280 "syncprov_init: Failed to register control %d\n", rc, 0, 0 );
3284 syncprov.on_bi.bi_type = "syncprov";
3285 syncprov.on_bi.bi_db_init = syncprov_db_init;
3286 syncprov.on_bi.bi_db_destroy = syncprov_db_destroy;
3287 syncprov.on_bi.bi_db_open = syncprov_db_open;
3288 syncprov.on_bi.bi_db_close = syncprov_db_close;
3290 syncprov.on_bi.bi_op_abandon = syncprov_op_abandon;
3291 syncprov.on_bi.bi_op_cancel = syncprov_op_abandon;
3293 syncprov.on_bi.bi_op_add = syncprov_op_mod;
3294 syncprov.on_bi.bi_op_compare = syncprov_op_compare;
3295 syncprov.on_bi.bi_op_delete = syncprov_op_mod;
3296 syncprov.on_bi.bi_op_modify = syncprov_op_mod;
3297 syncprov.on_bi.bi_op_modrdn = syncprov_op_mod;
3298 syncprov.on_bi.bi_op_search = syncprov_op_search;
3299 syncprov.on_bi.bi_extended = syncprov_op_extended;
3300 syncprov.on_bi.bi_operational = syncprov_operational;
3302 syncprov.on_bi.bi_cf_ocs = spocs;
3304 generic_filter.f_desc = slap_schema.si_ad_objectClass;
3306 rc = config_register_schema( spcfg, spocs );
3307 if ( rc ) return rc;
3309 return overlay_register( &syncprov );
3312 #if SLAPD_OVER_SYNCPROV == SLAPD_MOD_DYNAMIC
3314 init_module( int argc, char *argv[] )
3316 return syncprov_initialize();
3318 #endif /* SLAPD_OVER_SYNCPROV == SLAPD_MOD_DYNAMIC */
3320 #endif /* defined(SLAPD_OVER_SYNCPROV) */