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 int si_dirty; /* True if the context is dirty, i.e changes
138 * have been made without updating the csn. */
139 time_t si_chklast; /* time of last checkpoint */
140 Avlnode *si_mods; /* entries being modified */
142 ldap_pvt_thread_rdwr_t si_csn_rwlock;
143 ldap_pvt_thread_mutex_t si_ops_mutex;
144 ldap_pvt_thread_mutex_t si_mods_mutex;
145 ldap_pvt_thread_mutex_t si_resp_mutex;
148 typedef struct opcookie {
150 syncmatches *smatches;
153 struct berval sdn; /* DN of entry, for deletes */
155 struct berval suuid; /* UUID of entry */
156 struct berval sctxcsn;
157 short osid; /* sid of op csn */
158 short rsid; /* sid of relay */
159 short sreference; /* Is the entry a reference? */
162 typedef struct mutexint {
163 ldap_pvt_thread_mutex_t mi_mutex;
167 typedef struct fbase_cookie {
168 struct berval *fdn; /* DN of a modified entry, for scope testing */
169 syncops *fss; /* persistent search we're testing against */
170 int fbase; /* if TRUE we found the search base and it's still valid */
171 int fscope; /* if TRUE then fdn is within the psearch scope */
174 static AttributeName csn_anlist[3];
175 static AttributeName uuid_anlist[2];
177 /* Build a LDAPsync intermediate state control */
183 int entry_sync_state,
187 struct berval *cookie )
192 BerElementBuffer berbuf;
193 BerElement *ber = (BerElement *)&berbuf;
195 struct berval entryuuid_bv = BER_BVNULL;
197 ber_init2( ber, 0, LBER_USE_DER );
198 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
200 ctrls[num_ctrls] = op->o_tmpalloc( sizeof ( LDAPControl ), op->o_tmpmemctx );
202 for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
203 AttributeDescription *desc = a->a_desc;
204 if ( desc == slap_schema.si_ad_entryUUID ) {
205 entryuuid_bv = a->a_nvals[0];
210 /* FIXME: what if entryuuid is NULL or empty ? */
212 if ( send_cookie && cookie ) {
213 ber_printf( ber, "{eOON}",
214 entry_sync_state, &entryuuid_bv, cookie );
216 ber_printf( ber, "{eON}",
217 entry_sync_state, &entryuuid_bv );
220 ctrls[num_ctrls]->ldctl_oid = LDAP_CONTROL_SYNC_STATE;
221 ctrls[num_ctrls]->ldctl_iscritical = (op->o_sync == SLAP_CONTROL_CRITICAL);
222 ret = ber_flatten2( ber, &ctrls[num_ctrls]->ldctl_value, 1 );
227 Debug( LDAP_DEBUG_TRACE,
228 "slap_build_sync_ctrl: ber_flatten2 failed\n",
230 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
237 /* Build a LDAPsync final state control */
245 struct berval *cookie,
249 BerElementBuffer berbuf;
250 BerElement *ber = (BerElement *)&berbuf;
252 ber_init2( ber, NULL, LBER_USE_DER );
253 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
255 ctrls[num_ctrls] = op->o_tmpalloc( sizeof ( LDAPControl ), op->o_tmpmemctx );
257 ber_printf( ber, "{" );
258 if ( send_cookie && cookie ) {
259 ber_printf( ber, "O", cookie );
261 if ( refreshDeletes == LDAP_SYNC_REFRESH_DELETES ) {
262 ber_printf( ber, "b", refreshDeletes );
264 ber_printf( ber, "N}" );
266 ctrls[num_ctrls]->ldctl_oid = LDAP_CONTROL_SYNC_DONE;
267 ctrls[num_ctrls]->ldctl_iscritical = (op->o_sync == SLAP_CONTROL_CRITICAL);
268 ret = ber_flatten2( ber, &ctrls[num_ctrls]->ldctl_value, 1 );
273 Debug( LDAP_DEBUG_TRACE,
274 "syncprov_done_ctrl: ber_flatten2 failed\n",
276 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
288 struct berval *cookie,
293 BerElementBuffer berbuf;
294 BerElement *ber = (BerElement *)&berbuf;
295 struct berval rspdata;
299 ber_init2( ber, NULL, LBER_USE_DER );
300 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
304 case LDAP_TAG_SYNC_NEW_COOKIE:
305 ber_printf( ber, "tO", type, cookie );
307 case LDAP_TAG_SYNC_REFRESH_DELETE:
308 case LDAP_TAG_SYNC_REFRESH_PRESENT:
309 ber_printf( ber, "t{", type );
311 ber_printf( ber, "O", cookie );
313 if ( refreshDone == 0 ) {
314 ber_printf( ber, "b", refreshDone );
316 ber_printf( ber, "N}" );
318 case LDAP_TAG_SYNC_ID_SET:
319 ber_printf( ber, "t{", type );
321 ber_printf( ber, "O", cookie );
323 if ( refreshDeletes == 1 ) {
324 ber_printf( ber, "b", refreshDeletes );
326 ber_printf( ber, "[W]", syncUUIDs );
327 ber_printf( ber, "N}" );
330 Debug( LDAP_DEBUG_TRACE,
331 "syncprov_sendinfo: invalid syncinfo type (%d)\n",
337 ret = ber_flatten2( ber, &rspdata, 0 );
340 Debug( LDAP_DEBUG_TRACE,
341 "syncprov_sendinfo: ber_flatten2 failed\n",
343 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
347 rs->sr_rspoid = LDAP_SYNC_INFO;
348 rs->sr_rspdata = &rspdata;
349 send_ldap_intermediate( op, rs );
350 rs->sr_rspdata = NULL;
356 /* Find a modtarget in an AVL tree */
358 sp_avl_cmp( const void *c1, const void *c2 )
360 const modtarget *m1, *m2;
364 rc = m1->mt_op->o_req_ndn.bv_len - m2->mt_op->o_req_ndn.bv_len;
367 return ber_bvcmp( &m1->mt_op->o_req_ndn, &m2->mt_op->o_req_ndn );
370 /* syncprov_findbase:
371 * finds the true DN of the base of a search (with alias dereferencing) and
372 * checks to make sure the base entry doesn't get replaced with a different
373 * entry (e.g., swapping trees via ModDN, or retargeting an alias). If a
374 * change is detected, any persistent search on this base must be terminated /
376 * On the first call, we just save the DN and entryID. On subsequent calls
377 * we compare the DN and entryID with the saved values.
380 findbase_cb( Operation *op, SlapReply *rs )
382 slap_callback *sc = op->o_callback;
384 if ( rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS ) {
385 fbase_cookie *fc = sc->sc_private;
387 /* If no entryID, we're looking for the first time.
388 * Just store whatever we got.
390 if ( fc->fss->s_eid == NOID ) {
392 fc->fss->s_eid = rs->sr_entry->e_id;
393 ber_dupbv( &fc->fss->s_base, &rs->sr_entry->e_nname );
395 } else if ( rs->sr_entry->e_id == fc->fss->s_eid &&
396 dn_match( &rs->sr_entry->e_nname, &fc->fss->s_base )) {
398 /* OK, the DN is the same and the entryID is the same. */
402 if ( rs->sr_err != LDAP_SUCCESS ) {
403 Debug( LDAP_DEBUG_ANY, "findbase failed! %d\n", rs->sr_err,0,0 );
408 static Filter generic_filter = { LDAP_FILTER_PRESENT, { 0 }, NULL };
409 static struct berval generic_filterstr = BER_BVC("(objectclass=*)");
412 syncprov_findbase( Operation *op, fbase_cookie *fc )
414 /* Use basic parameters from syncrepl search, but use
415 * current op's threadctx / tmpmemctx
417 ldap_pvt_thread_mutex_lock( &fc->fss->s_mutex );
418 if ( fc->fss->s_flags & PS_FIND_BASE ) {
419 slap_callback cb = {0};
421 SlapReply frs = { REP_RESULT };
424 fc->fss->s_flags ^= PS_FIND_BASE;
425 ldap_pvt_thread_mutex_unlock( &fc->fss->s_mutex );
427 fop = *fc->fss->s_op;
429 fop.o_bd = fop.o_bd->bd_self;
430 fop.o_hdr = op->o_hdr;
431 fop.o_time = op->o_time;
432 fop.o_tincr = op->o_tincr;
434 cb.sc_response = findbase_cb;
437 fop.o_sync_mode = 0; /* turn off sync mode */
438 fop.o_managedsait = SLAP_CONTROL_CRITICAL;
439 fop.o_callback = &cb;
440 fop.o_tag = LDAP_REQ_SEARCH;
441 fop.ors_scope = LDAP_SCOPE_BASE;
442 fop.ors_limit = NULL;
444 fop.ors_tlimit = SLAP_NO_LIMIT;
445 fop.ors_attrs = slap_anlist_no_attrs;
446 fop.ors_attrsonly = 1;
447 fop.ors_filter = &generic_filter;
448 fop.ors_filterstr = generic_filterstr;
450 rc = fop.o_bd->be_search( &fop, &frs );
452 ldap_pvt_thread_mutex_unlock( &fc->fss->s_mutex );
456 /* After the first call, see if the fdn resides in the scope */
457 if ( fc->fbase == 1 ) {
458 switch ( fc->fss->s_op->ors_scope ) {
459 case LDAP_SCOPE_BASE:
460 fc->fscope = dn_match( fc->fdn, &fc->fss->s_base );
462 case LDAP_SCOPE_ONELEVEL: {
464 dnParent( fc->fdn, &pdn );
465 fc->fscope = dn_match( &pdn, &fc->fss->s_base );
467 case LDAP_SCOPE_SUBTREE:
468 fc->fscope = dnIsSuffix( fc->fdn, &fc->fss->s_base );
470 case LDAP_SCOPE_SUBORDINATE:
471 fc->fscope = dnIsSuffix( fc->fdn, &fc->fss->s_base ) &&
472 !dn_match( fc->fdn, &fc->fss->s_base );
480 /* If entryID has changed, then the base of this search has
481 * changed. Invalidate the psearch.
483 return LDAP_NO_SUCH_OBJECT;
487 * This function has three different purposes, but they all use a search
488 * that filters on entryCSN so they're combined here.
489 * 1: at startup time, after a contextCSN has been read from the database,
490 * we search for all entries with CSN >= contextCSN in case the contextCSN
491 * was not checkpointed at the previous shutdown.
493 * 2: when the current contextCSN is known and we have a sync cookie, we search
494 * for one entry with CSN = the cookie CSN. If not found, try <= cookie CSN.
495 * If an entry is found, the cookie CSN is valid, otherwise it is stale.
497 * 3: during a refresh phase, we search for all entries with CSN <= the cookie
498 * CSN, and generate Present records for them. We always collect this result
499 * in SyncID sets, even if there's only one match.
501 typedef enum find_csn_t {
508 findmax_cb( Operation *op, SlapReply *rs )
510 if ( rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS ) {
511 struct berval *maxcsn = op->o_callback->sc_private;
512 Attribute *a = attr_find( rs->sr_entry->e_attrs,
513 slap_schema.si_ad_entryCSN );
515 if ( a && ber_bvcmp( &a->a_vals[0], maxcsn ) > 0 &&
516 slap_parse_csn_sid( &a->a_vals[0] ) == slap_serverID ) {
517 maxcsn->bv_len = a->a_vals[0].bv_len;
518 strcpy( maxcsn->bv_val, a->a_vals[0].bv_val );
525 findcsn_cb( Operation *op, SlapReply *rs )
527 slap_callback *sc = op->o_callback;
529 /* We just want to know that at least one exists, so it's OK if
530 * we exceed the unchecked limit.
532 if ( rs->sr_err == LDAP_ADMINLIMIT_EXCEEDED ||
533 (rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS )) {
534 sc->sc_private = (void *)1;
539 /* Build a list of entryUUIDs for sending in a SyncID set */
543 typedef struct fpres_cookie {
550 findpres_cb( Operation *op, SlapReply *rs )
552 slap_callback *sc = op->o_callback;
553 fpres_cookie *pc = sc->sc_private;
555 int ret = SLAP_CB_CONTINUE;
557 switch ( rs->sr_type ) {
559 a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_entryUUID );
561 pc->uuids[pc->num].bv_val = pc->last;
562 AC_MEMCPY( pc->uuids[pc->num].bv_val, a->a_nvals[0].bv_val,
563 pc->uuids[pc->num].bv_len );
565 pc->last = pc->uuids[pc->num].bv_val;
566 pc->uuids[pc->num].bv_val = NULL;
569 if ( pc->num != SLAP_SYNCUUID_SET_SIZE )
575 ret = syncprov_sendinfo( op, rs, LDAP_TAG_SYNC_ID_SET, NULL,
577 pc->uuids[pc->num].bv_val = pc->last;
579 pc->last = pc->uuids[0].bv_val;
589 syncprov_findcsn( Operation *op, find_csn_t mode )
591 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
592 syncprov_info_t *si = on->on_bi.bi_private;
594 slap_callback cb = {0};
596 SlapReply frs = { REP_RESULT };
597 char buf[LDAP_PVT_CSNSTR_BUFSIZE + STRLENOF("(entryCSN<=)")];
598 char cbuf[LDAP_PVT_CSNSTR_BUFSIZE];
599 struct berval maxcsn;
601 AttributeAssertion eq = ATTRIBUTEASSERTION_INIT;
602 fpres_cookie pcookie;
603 sync_control *srs = NULL;
604 struct slap_limits_set fc_limits;
605 int i, rc = LDAP_SUCCESS, findcsn_retry = 1;
608 if ( mode != FIND_MAXCSN ) {
609 srs = op->o_controls[slap_cids.sc_LDAPsync];
613 fop.o_sync_mode &= SLAP_CONTROL_MASK; /* turn off sync_mode */
614 /* We want pure entries, not referrals */
615 fop.o_managedsait = SLAP_CONTROL_CRITICAL;
618 cf.f_av_desc = slap_schema.si_ad_entryCSN;
619 BER_BVZERO( &cf.f_av_value );
622 fop.o_callback = &cb;
623 fop.ors_limit = NULL;
624 fop.ors_tlimit = SLAP_NO_LIMIT;
625 fop.ors_filter = &cf;
626 fop.ors_filterstr.bv_val = buf;
631 cf.f_choice = LDAP_FILTER_GE;
632 /* If there are multiple CSNs, use the one with our serverID */
633 for ( i=0; i<si->si_numcsns; i++) {
634 if ( slap_serverID == si->si_sids[i] ) {
639 if ( i == si->si_numcsns ) {
640 /* No match: this is multimaster, and none of the content in the DB
641 * originated locally. Treat like no CSN.
643 return LDAP_NO_SUCH_OBJECT;
645 cf.f_av_value = si->si_ctxcsn[maxid];
646 fop.ors_filterstr.bv_len = snprintf( buf, sizeof( buf ),
647 "(entryCSN>=%s)", cf.f_av_value.bv_val );
648 if ( fop.ors_filterstr.bv_len >= sizeof( buf ) ) {
651 fop.ors_attrsonly = 0;
652 fop.ors_attrs = csn_anlist;
653 fop.ors_slimit = SLAP_NO_LIMIT;
654 cb.sc_private = &maxcsn;
655 cb.sc_response = findmax_cb;
656 strcpy( cbuf, cf.f_av_value.bv_val );
657 maxcsn.bv_val = cbuf;
658 maxcsn.bv_len = cf.f_av_value.bv_len;
661 if ( BER_BVISEMPTY( &cf.f_av_value )) {
662 cf.f_av_value = srs->sr_state.ctxcsn[0];
663 /* If there are multiple CSNs, use the smallest */
664 for ( i=1; i<srs->sr_state.numcsns; i++ ) {
665 if ( ber_bvcmp( &cf.f_av_value, &srs->sr_state.ctxcsn[i] )
667 cf.f_av_value = srs->sr_state.ctxcsn[i];
671 /* Look for exact match the first time */
672 if ( findcsn_retry ) {
673 cf.f_choice = LDAP_FILTER_EQUALITY;
674 fop.ors_filterstr.bv_len = snprintf( buf, sizeof( buf ),
675 "(entryCSN=%s)", cf.f_av_value.bv_val );
676 /* On retry, look for <= */
678 cf.f_choice = LDAP_FILTER_LE;
679 fop.ors_limit = &fc_limits;
680 memset( &fc_limits, 0, sizeof( fc_limits ));
681 fc_limits.lms_s_unchecked = 1;
682 fop.ors_filterstr.bv_len = snprintf( buf, sizeof( buf ),
683 "(entryCSN<=%s)", cf.f_av_value.bv_val );
685 if ( fop.ors_filterstr.bv_len >= sizeof( buf ) ) {
688 fop.ors_attrsonly = 1;
689 fop.ors_attrs = slap_anlist_no_attrs;
691 cb.sc_private = NULL;
692 cb.sc_response = findcsn_cb;
695 fop.ors_filter = op->ors_filter;
696 fop.ors_filterstr = op->ors_filterstr;
697 fop.ors_attrsonly = 0;
698 fop.ors_attrs = uuid_anlist;
699 fop.ors_slimit = SLAP_NO_LIMIT;
700 cb.sc_private = &pcookie;
701 cb.sc_response = findpres_cb;
704 /* preallocate storage for a full set */
705 pcookie.uuids = op->o_tmpalloc( (SLAP_SYNCUUID_SET_SIZE+1) *
706 sizeof(struct berval) + SLAP_SYNCUUID_SET_SIZE * UUID_LEN,
708 pcookie.last = (char *)(pcookie.uuids + SLAP_SYNCUUID_SET_SIZE+1);
709 pcookie.uuids[0].bv_val = pcookie.last;
710 pcookie.uuids[0].bv_len = UUID_LEN;
711 for (i=1; i<SLAP_SYNCUUID_SET_SIZE; i++) {
712 pcookie.uuids[i].bv_val = pcookie.uuids[i-1].bv_val + UUID_LEN;
713 pcookie.uuids[i].bv_len = UUID_LEN;
718 fop.o_bd->bd_info = (BackendInfo *)on->on_info;
719 fop.o_bd->be_search( &fop, &frs );
720 fop.o_bd->bd_info = (BackendInfo *)on;
724 if ( ber_bvcmp( &si->si_ctxcsn[maxid], &maxcsn )) {
726 Syntax *syn = slap_schema.si_ad_contextCSN->ad_type->sat_syntax;
727 assert( !syn->ssyn_validate( syn, &maxcsn ));
729 ber_bvreplace( &si->si_ctxcsn[maxid], &maxcsn );
730 si->si_numops++; /* ensure a checkpoint */
734 /* If matching CSN was not found, invalidate the context. */
735 if ( !cb.sc_private ) {
736 /* If we didn't find an exact match, then try for <= */
737 if ( findcsn_retry ) {
741 rc = LDAP_NO_SUCH_OBJECT;
745 op->o_tmpfree( pcookie.uuids, op->o_tmpmemctx );
752 /* Should find a place to cache these */
753 static mutexint *get_mutexint()
755 mutexint *mi = ch_malloc( sizeof( mutexint ));
756 ldap_pvt_thread_mutex_init( &mi->mi_mutex );
761 static void inc_mutexint( mutexint *mi )
763 ldap_pvt_thread_mutex_lock( &mi->mi_mutex );
765 ldap_pvt_thread_mutex_unlock( &mi->mi_mutex );
768 /* return resulting counter */
769 static int dec_mutexint( mutexint *mi )
772 ldap_pvt_thread_mutex_lock( &mi->mi_mutex );
774 ldap_pvt_thread_mutex_unlock( &mi->mi_mutex );
776 ldap_pvt_thread_mutex_destroy( &mi->mi_mutex );
783 syncprov_free_syncop( syncops *so )
785 syncres *sr, *srnext;
786 GroupAssertion *ga, *gnext;
788 ldap_pvt_thread_mutex_lock( &so->s_mutex );
789 /* already being freed, or still in use */
790 if ( !so->s_inuse || --so->s_inuse > 0 ) {
791 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
794 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
795 if ( so->s_flags & PS_IS_DETACHED ) {
796 filter_free( so->s_op->ors_filter );
797 for ( ga = so->s_op->o_groups; ga; ga=gnext ) {
803 ch_free( so->s_base.bv_val );
804 for ( sr=so->s_res; sr; sr=srnext ) {
807 if ( !dec_mutexint( sr->s_e->e_private )) {
808 sr->s_e->e_private = NULL;
809 entry_free( sr->s_e );
814 ldap_pvt_thread_mutex_destroy( &so->s_mutex );
818 /* Send a persistent search response */
820 syncprov_sendresp( Operation *op, opcookie *opc, syncops *so, int mode )
822 slap_overinst *on = opc->son;
824 SlapReply rs = { REP_SEARCH };
825 LDAPControl *ctrls[2];
826 struct berval cookie = BER_BVNULL, csns[2];
828 Attribute a_uuid = {0};
830 if ( so->s_op->o_abandon )
831 return SLAPD_ABANDON;
834 if ( !BER_BVISNULL( &opc->sctxcsn )) {
835 csns[0] = opc->sctxcsn;
836 BER_BVZERO( &csns[1] );
837 slap_compose_sync_cookie( op, &cookie, csns, so->s_rid, slap_serverID ? slap_serverID : -1 );
841 if ( so->s_sid > 0 ) {
842 Debug( LDAP_DEBUG_SYNC, "syncprov_sendresp: to=%03x, cookie=%s\n",
843 so->s_sid, cookie.bv_val ? cookie.bv_val : "", 0 );
845 Debug( LDAP_DEBUG_SYNC, "syncprov_sendresp: cookie=%s\n",
846 cookie.bv_val ? cookie.bv_val : "", 0, 0 );
850 e_uuid.e_attrs = &a_uuid;
851 a_uuid.a_desc = slap_schema.si_ad_entryUUID;
852 a_uuid.a_nvals = &opc->suuid;
853 rs.sr_err = syncprov_state_ctrl( op, &rs, &e_uuid,
854 mode, ctrls, 0, 1, &cookie );
855 if ( !BER_BVISNULL( &cookie )) {
856 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
860 rs.sr_entry = &e_uuid;
861 if ( mode == LDAP_SYNC_ADD || mode == LDAP_SYNC_MODIFY ) {
863 e_uuid.e_private = NULL;
868 if ( opc->sreference && so->s_op->o_managedsait <= SLAP_CONTROL_IGNORED ) {
869 rs.sr_ref = get_entry_referrals( op, rs.sr_entry );
870 rs.sr_err = send_search_reference( op, &rs );
871 ber_bvarray_free( rs.sr_ref );
875 case LDAP_SYNC_MODIFY:
876 rs.sr_attrs = op->ors_attrs;
877 rs.sr_err = send_search_entry( op, &rs );
879 case LDAP_SYNC_DELETE:
880 e_uuid.e_attrs = NULL;
881 e_uuid.e_name = opc->sdn;
882 e_uuid.e_nname = opc->sndn;
883 if ( opc->sreference && so->s_op->o_managedsait <= SLAP_CONTROL_IGNORED ) {
884 struct berval bv = BER_BVNULL;
886 rs.sr_err = send_search_reference( op, &rs );
888 rs.sr_err = send_search_entry( op, &rs );
894 /* In case someone else freed it already? */
897 for ( i=0; rs.sr_ctrls[i]; i++ ) {
898 if ( rs.sr_ctrls[i] == ctrls[0] ) {
899 op->o_tmpfree( ctrls[0]->ldctl_value.bv_val, op->o_tmpmemctx );
900 ctrls[0]->ldctl_value.bv_val = NULL;
911 syncprov_qstart( syncops *so );
913 /* Play back queued responses */
915 syncprov_qplay( Operation *op, syncops *so )
917 slap_overinst *on = LDAP_SLIST_FIRST(&so->s_op->o_extra)->oe_key;
926 ldap_pvt_thread_mutex_lock( &so->s_mutex );
929 so->s_res = sr->s_next;
931 so->s_restail = NULL;
932 /* Exit loop with mutex held */
933 if ( !sr || so->s_op->o_abandon )
935 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
937 if ( sr->s_mode == LDAP_SYNC_NEW_COOKIE ) {
938 SlapReply rs = { REP_INTERMEDIATE };
940 rc = syncprov_sendinfo( op, &rs, LDAP_TAG_SYNC_NEW_COOKIE,
941 &sr->s_csn, 0, NULL, 0 );
944 opc.sndn = sr->s_ndn;
945 opc.suuid = sr->s_uuid;
946 opc.sctxcsn = sr->s_csn;
947 opc.sreference = sr->s_isreference;
950 rc = syncprov_sendresp( op, &opc, so, sr->s_mode );
954 if ( !dec_mutexint( sr->s_e->e_private )) {
955 sr->s_e->e_private = NULL;
956 entry_free ( sr->s_e );
962 /* Exit loop with mutex held */
963 ldap_pvt_thread_mutex_lock( &so->s_mutex );
967 /* We now only send one change at a time, to prevent one
968 * psearch from hogging all the CPU. Resubmit this task if
969 * there are more responses queued and no errors occurred.
972 if ( rc == 0 && so->s_res ) {
973 syncprov_qstart( so );
975 so->s_flags ^= PS_TASK_QUEUED;
978 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
982 /* task for playing back queued responses */
984 syncprov_qtask( void *ctx, void *arg )
987 OperationBuffer opbuf;
994 op->o_hdr = &opbuf.ob_hdr;
995 op->o_controls = opbuf.ob_controls;
996 memset( op->o_controls, 0, sizeof(opbuf.ob_controls) );
998 *op->o_hdr = *so->s_op->o_hdr;
1000 op->o_tmpmemctx = slap_sl_mem_create(SLAP_SLAB_SIZE, SLAP_SLAB_STACK, ctx, 1);
1001 op->o_tmpmfuncs = &slap_sl_mfuncs;
1002 op->o_threadctx = ctx;
1004 /* syncprov_qplay expects a fake db */
1005 be = *so->s_op->o_bd;
1006 be.be_flags |= SLAP_DBFLAG_OVERLAY;
1008 LDAP_SLIST_FIRST(&op->o_extra) = NULL;
1009 op->o_callback = NULL;
1011 rc = syncprov_qplay( op, so );
1013 /* decrement use count... */
1014 syncprov_free_syncop( so );
1019 /* Start the task to play back queued psearch responses */
1021 syncprov_qstart( syncops *so )
1023 so->s_flags |= PS_TASK_QUEUED;
1025 ldap_pvt_thread_pool_submit( &connection_pool,
1026 syncprov_qtask, so );
1029 /* Queue a persistent search response */
1031 syncprov_qresp( opcookie *opc, syncops *so, int mode )
1035 struct berval cookie = opc->sctxcsn;
1037 if ( mode == LDAP_SYNC_NEW_COOKIE ) {
1038 syncprov_info_t *si = opc->son->on_bi.bi_private;
1040 slap_compose_sync_cookie( NULL, &cookie, si->si_ctxcsn,
1041 so->s_rid, slap_serverID ? slap_serverID : -1);
1044 srsize = sizeof(syncres) + opc->suuid.bv_len + 1 +
1045 opc->sdn.bv_len + 1 + opc->sndn.bv_len + 1;
1046 if ( cookie.bv_len )
1047 srsize += cookie.bv_len + 1;
1048 sr = ch_malloc( srsize );
1051 /* bump refcount on this entry */
1053 inc_mutexint( opc->se->e_private );
1054 sr->s_dn.bv_val = (char *)(sr + 1);
1055 sr->s_dn.bv_len = opc->sdn.bv_len;
1057 sr->s_isreference = opc->sreference;
1058 sr->s_ndn.bv_val = lutil_strcopy( sr->s_dn.bv_val,
1059 opc->sdn.bv_val ) + 1;
1060 sr->s_ndn.bv_len = opc->sndn.bv_len;
1061 sr->s_uuid.bv_val = lutil_strcopy( sr->s_ndn.bv_val,
1062 opc->sndn.bv_val ) + 1;
1063 sr->s_uuid.bv_len = opc->suuid.bv_len;
1064 AC_MEMCPY( sr->s_uuid.bv_val, opc->suuid.bv_val, opc->suuid.bv_len );
1065 if ( cookie.bv_len ) {
1066 sr->s_csn.bv_val = sr->s_uuid.bv_val + sr->s_uuid.bv_len + 1;
1067 strcpy( sr->s_csn.bv_val, cookie.bv_val );
1069 sr->s_csn.bv_val = NULL;
1071 sr->s_csn.bv_len = cookie.bv_len;
1073 if ( mode == LDAP_SYNC_NEW_COOKIE && cookie.bv_val ) {
1074 ch_free( cookie.bv_val );
1077 ldap_pvt_thread_mutex_lock( &so->s_mutex );
1081 so->s_restail->s_next = sr;
1085 /* If the base of the psearch was modified, check it next time round */
1086 if ( so->s_flags & PS_WROTE_BASE ) {
1087 so->s_flags ^= PS_WROTE_BASE;
1088 so->s_flags |= PS_FIND_BASE;
1090 if (( so->s_flags & (PS_IS_DETACHED|PS_TASK_QUEUED)) == PS_IS_DETACHED ) {
1091 syncprov_qstart( so );
1093 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
1094 return LDAP_SUCCESS;
1098 syncprov_drop_psearch( syncops *so, int lock )
1100 if ( so->s_flags & PS_IS_DETACHED ) {
1102 ldap_pvt_thread_mutex_lock( &so->s_op->o_conn->c_mutex );
1103 so->s_op->o_conn->c_n_ops_executing--;
1104 so->s_op->o_conn->c_n_ops_completed++;
1105 LDAP_STAILQ_REMOVE( &so->s_op->o_conn->c_ops, so->s_op, Operation,
1108 ldap_pvt_thread_mutex_unlock( &so->s_op->o_conn->c_mutex );
1110 syncprov_free_syncop( so );
1116 syncprov_ab_cleanup( Operation *op, SlapReply *rs )
1118 slap_callback *sc = op->o_callback;
1119 op->o_callback = sc->sc_next;
1120 syncprov_drop_psearch( op->o_callback->sc_private, 0 );
1121 op->o_tmpfree( sc, op->o_tmpmemctx );
1126 syncprov_op_abandon( Operation *op, SlapReply *rs )
1128 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1129 syncprov_info_t *si = on->on_bi.bi_private;
1130 syncops *so, *soprev;
1132 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1133 for ( so=si->si_ops, soprev = (syncops *)&si->si_ops; so;
1134 soprev=so, so=so->s_next ) {
1135 if ( so->s_op->o_connid == op->o_connid &&
1136 so->s_op->o_msgid == op->orn_msgid ) {
1137 so->s_op->o_abandon = 1;
1138 soprev->s_next = so->s_next;
1142 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1144 /* Is this really a Cancel exop? */
1145 if ( op->o_tag != LDAP_REQ_ABANDON ) {
1146 so->s_op->o_cancel = SLAP_CANCEL_ACK;
1147 rs->sr_err = LDAP_CANCELLED;
1148 send_ldap_result( so->s_op, rs );
1149 if ( so->s_flags & PS_IS_DETACHED ) {
1151 cb = op->o_tmpcalloc( 1, sizeof(slap_callback), op->o_tmpmemctx );
1152 cb->sc_cleanup = syncprov_ab_cleanup;
1153 cb->sc_next = op->o_callback;
1154 cb->sc_private = so;
1155 return SLAP_CB_CONTINUE;
1158 syncprov_drop_psearch( so, 0 );
1160 return SLAP_CB_CONTINUE;
1163 /* Find which persistent searches are affected by this operation */
1165 syncprov_matchops( Operation *op, opcookie *opc, int saveit )
1167 slap_overinst *on = opc->son;
1168 syncprov_info_t *si = on->on_bi.bi_private;
1171 syncops *ss, *sprev, *snext;
1175 struct berval newdn;
1177 BackendDB *b0 = op->o_bd, db;
1179 fc.fdn = &op->o_req_ndn;
1180 /* compute new DN */
1181 if ( op->o_tag == LDAP_REQ_MODRDN && !saveit ) {
1183 if ( op->orr_nnewSup ) pdn = *op->orr_nnewSup;
1184 else dnParent( fc.fdn, &pdn );
1185 build_new_dn( &newdn, &pdn, &op->orr_nnewrdn, op->o_tmpmemctx );
1189 if ( op->o_tag != LDAP_REQ_ADD ) {
1190 if ( !SLAP_ISOVERLAY( op->o_bd )) {
1194 rc = overlay_entry_get_ov( op, fc.fdn, NULL, NULL, 0, &e, on );
1195 /* If we're sending responses now, make a copy and unlock the DB */
1196 if ( e && !saveit ) {
1198 opc->se = entry_dup( e );
1199 opc->se->e_private = get_mutexint();
1201 overlay_entry_release_ov( op, e, 0, on );
1212 opc->se = entry_dup( e );
1213 opc->se->e_private = get_mutexint();
1219 if ( saveit || op->o_tag == LDAP_REQ_ADD ) {
1220 ber_dupbv_x( &opc->sdn, &e->e_name, op->o_tmpmemctx );
1221 ber_dupbv_x( &opc->sndn, &e->e_nname, op->o_tmpmemctx );
1222 opc->sreference = is_entry_referral( e );
1223 a = attr_find( e->e_attrs, slap_schema.si_ad_entryUUID );
1225 ber_dupbv_x( &opc->suuid, &a->a_nvals[0], op->o_tmpmemctx );
1226 } else if ( op->o_tag == LDAP_REQ_MODRDN && !saveit ) {
1227 op->o_tmpfree( opc->sndn.bv_val, op->o_tmpmemctx );
1228 op->o_tmpfree( opc->sdn.bv_val, op->o_tmpmemctx );
1229 ber_dupbv_x( &opc->sdn, &e->e_name, op->o_tmpmemctx );
1230 ber_dupbv_x( &opc->sndn, &e->e_nname, op->o_tmpmemctx );
1233 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1234 for (ss = si->si_ops, sprev = (syncops *)&si->si_ops; ss;
1235 sprev = ss, ss=snext)
1243 if ( ss->s_op->o_abandon )
1246 /* Don't send ops back to the originator */
1247 if ( opc->osid > 0 && opc->osid == ss->s_sid ) {
1248 Debug( LDAP_DEBUG_SYNC, "syncprov_matchops: skipping original sid %03x\n",
1253 /* Don't send ops back to the messenger */
1254 if ( opc->rsid > 0 && opc->rsid == ss->s_sid ) {
1255 Debug( LDAP_DEBUG_SYNC, "syncprov_matchops: skipping relayed sid %03x\n",
1265 /* If the base of the search is missing, signal a refresh */
1266 rc = syncprov_findbase( op, &fc );
1267 if ( rc != LDAP_SUCCESS ) {
1268 SlapReply rs = {REP_RESULT};
1269 send_ldap_error( ss->s_op, &rs, LDAP_SYNC_REFRESH_REQUIRED,
1270 "search base has changed" );
1271 sprev->s_next = snext;
1272 syncprov_drop_psearch( ss, 1 );
1277 /* If we're sending results now, look for this op in old matches */
1281 /* Did we modify the search base? */
1282 if ( dn_match( &op->o_req_ndn, &ss->s_base )) {
1283 ldap_pvt_thread_mutex_lock( &ss->s_mutex );
1284 ss->s_flags |= PS_WROTE_BASE;
1285 ldap_pvt_thread_mutex_unlock( &ss->s_mutex );
1288 for ( sm=opc->smatches, old=(syncmatches *)&opc->smatches; sm;
1289 old=sm, sm=sm->sm_next ) {
1290 if ( sm->sm_op == ss ) {
1292 old->sm_next = sm->sm_next;
1293 op->o_tmpfree( sm, op->o_tmpmemctx );
1300 ldap_pvt_thread_mutex_lock( &ss->s_mutex );
1303 oh.oh_conn = ss->s_op->o_conn;
1304 oh.oh_connid = ss->s_op->o_connid;
1305 op2.o_bd = op->o_bd->bd_self;
1307 op2.o_extra = op->o_extra;
1308 op2.o_callback = NULL;
1309 if (ss->s_flags & PS_FIX_FILTER) {
1310 /* Skip the AND/GE clause that we stuck on in front. We
1311 would lose deletes/mods that happen during the refresh
1312 phase otherwise (ITS#6555) */
1313 op2.ors_filter = ss->s_op->ors_filter->f_and->f_next;
1315 ldap_pvt_thread_mutex_unlock( &ss->s_mutex );
1316 rc = test_filter( &op2, e, op2.ors_filter );
1319 Debug( LDAP_DEBUG_TRACE, "syncprov_matchops: sid %03x fscope %d rc %d\n",
1320 ss->s_sid, fc.fscope, rc );
1322 /* check if current o_req_dn is in scope and matches filter */
1323 if ( fc.fscope && rc == LDAP_COMPARE_TRUE ) {
1325 sm = op->o_tmpalloc( sizeof(syncmatches), op->o_tmpmemctx );
1326 sm->sm_next = opc->smatches;
1328 ldap_pvt_thread_mutex_lock( &ss->s_mutex );
1330 ldap_pvt_thread_mutex_unlock( &ss->s_mutex );
1333 /* if found send UPDATE else send ADD */
1334 syncprov_qresp( opc, ss,
1335 found ? LDAP_SYNC_MODIFY : LDAP_SYNC_ADD );
1337 } else if ( !saveit && found ) {
1339 syncprov_qresp( opc, ss, LDAP_SYNC_DELETE );
1340 } else if ( !saveit ) {
1341 syncprov_qresp( opc, ss, LDAP_SYNC_NEW_COOKIE );
1343 if ( !saveit && found ) {
1344 /* Decrement s_inuse, was incremented when called
1345 * with saveit == TRUE
1347 syncprov_free_syncop( ss );
1350 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1352 if ( op->o_tag != LDAP_REQ_ADD && e ) {
1353 if ( !SLAP_ISOVERLAY( op->o_bd )) {
1357 overlay_entry_release_ov( op, e, 0, on );
1360 if ( opc->se && !saveit ) {
1361 if ( !dec_mutexint( opc->se->e_private )) {
1362 opc->se->e_private = NULL;
1363 entry_free( opc->se );
1368 op->o_tmpfree( fc.fdn->bv_val, op->o_tmpmemctx );
1374 syncprov_op_cleanup( Operation *op, SlapReply *rs )
1376 slap_callback *cb = op->o_callback;
1377 opcookie *opc = cb->sc_private;
1378 slap_overinst *on = opc->son;
1379 syncprov_info_t *si = on->on_bi.bi_private;
1380 syncmatches *sm, *snext;
1381 modtarget *mt, mtdummy;
1383 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1384 if ( si->si_active )
1386 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1388 for (sm = opc->smatches; sm; sm=snext) {
1389 snext = sm->sm_next;
1390 syncprov_free_syncop( sm->sm_op );
1391 op->o_tmpfree( sm, op->o_tmpmemctx );
1394 /* Remove op from lock table */
1397 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
1398 mt->mt_mods = mt->mt_mods->mi_next;
1399 /* If there are more, promote the next one */
1400 if ( mt->mt_mods ) {
1401 mt->mt_op = mt->mt_mods->mi_op;
1402 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1404 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1405 ldap_pvt_thread_mutex_lock( &si->si_mods_mutex );
1406 avl_delete( &si->si_mods, mt, sp_avl_cmp );
1407 ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
1408 ldap_pvt_thread_mutex_destroy( &mt->mt_mutex );
1412 if ( !BER_BVISNULL( &opc->suuid ))
1413 op->o_tmpfree( opc->suuid.bv_val, op->o_tmpmemctx );
1414 if ( !BER_BVISNULL( &opc->sndn ))
1415 op->o_tmpfree( opc->sndn.bv_val, op->o_tmpmemctx );
1416 if ( !BER_BVISNULL( &opc->sdn ))
1417 op->o_tmpfree( opc->sdn.bv_val, op->o_tmpmemctx );
1418 op->o_callback = cb->sc_next;
1419 op->o_tmpfree(cb, op->o_tmpmemctx);
1425 syncprov_checkpoint( Operation *op, SlapReply *rs, slap_overinst *on )
1427 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
1430 SlapReply rsm = { 0 };
1431 slap_callback cb = {0};
1436 Syntax *syn = slap_schema.si_ad_contextCSN->ad_type->sat_syntax;
1439 for ( i=0; i<si->si_numcsns; i++ ) {
1440 assert( !syn->ssyn_validate( syn, si->si_ctxcsn+i ));
1443 mod.sml_numvals = si->si_numcsns;
1444 mod.sml_values = si->si_ctxcsn;
1445 mod.sml_nvalues = NULL;
1446 mod.sml_desc = slap_schema.si_ad_contextCSN;
1447 mod.sml_op = LDAP_MOD_REPLACE;
1448 mod.sml_flags = SLAP_MOD_INTERNAL;
1449 mod.sml_next = NULL;
1451 cb.sc_response = slap_null_cb;
1453 opm.o_tag = LDAP_REQ_MODIFY;
1454 opm.o_callback = &cb;
1455 opm.orm_modlist = &mod;
1456 opm.orm_no_opattrs = 1;
1457 if ( SLAP_GLUE_SUBORDINATE( op->o_bd )) {
1458 be = *on->on_info->oi_origdb;
1461 opm.o_req_dn = si->si_contextdn;
1462 opm.o_req_ndn = si->si_contextdn;
1463 bi = opm.o_bd->bd_info;
1464 opm.o_bd->bd_info = on->on_info->oi_orig;
1465 opm.o_managedsait = SLAP_CONTROL_NONCRITICAL;
1466 opm.o_no_schema_check = 1;
1467 opm.o_bd->be_modify( &opm, &rsm );
1469 if ( rsm.sr_err == LDAP_NO_SUCH_OBJECT &&
1470 SLAP_SYNC_SUBENTRY( opm.o_bd )) {
1472 char txtbuf[SLAP_TEXT_BUFLEN];
1473 size_t textlen = sizeof txtbuf;
1474 Entry *e = slap_create_context_csn_entry( opm.o_bd, NULL );
1475 slap_mods2entry( &mod, &e, 0, 1, &text, txtbuf, textlen);
1477 opm.o_bd->be_add( &opm, &rsm );
1478 if ( e == opm.ora_e )
1479 be_entry_release_w( &opm, opm.ora_e );
1481 opm.o_bd->bd_info = bi;
1483 if ( mod.sml_next != NULL ) {
1484 slap_mods_free( mod.sml_next, 1 );
1487 for ( i=0; i<si->si_numcsns; i++ ) {
1488 assert( !syn->ssyn_validate( syn, si->si_ctxcsn+i ));
1494 syncprov_add_slog( Operation *op )
1496 opcookie *opc = op->o_callback->sc_private;
1497 slap_overinst *on = opc->son;
1498 syncprov_info_t *si = on->on_bi.bi_private;
1504 /* Allocate a record. UUIDs are not NUL-terminated. */
1505 se = ch_malloc( sizeof( slog_entry ) + opc->suuid.bv_len +
1506 op->o_csn.bv_len + 1 );
1508 se->se_tag = op->o_tag;
1510 se->se_uuid.bv_val = (char *)(&se[1]);
1511 AC_MEMCPY( se->se_uuid.bv_val, opc->suuid.bv_val, opc->suuid.bv_len );
1512 se->se_uuid.bv_len = opc->suuid.bv_len;
1514 se->se_csn.bv_val = se->se_uuid.bv_val + opc->suuid.bv_len;
1515 AC_MEMCPY( se->se_csn.bv_val, op->o_csn.bv_val, op->o_csn.bv_len );
1516 se->se_csn.bv_val[op->o_csn.bv_len] = '\0';
1517 se->se_csn.bv_len = op->o_csn.bv_len;
1518 se->se_sid = slap_parse_csn_sid( &se->se_csn );
1520 ldap_pvt_thread_mutex_lock( &sl->sl_mutex );
1521 if ( sl->sl_head ) {
1522 sl->sl_tail->se_next = se;
1528 while ( sl->sl_num > sl->sl_size ) {
1530 sl->sl_head = se->se_next;
1531 strcpy( sl->sl_mincsn.bv_val, se->se_csn.bv_val );
1532 sl->sl_mincsn.bv_len = se->se_csn.bv_len;
1536 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1540 /* Just set a flag if we found the matching entry */
1542 playlog_cb( Operation *op, SlapReply *rs )
1544 if ( rs->sr_type == REP_SEARCH ) {
1545 op->o_callback->sc_private = (void *)1;
1550 /* enter with sl->sl_mutex locked, release before returning */
1552 syncprov_playlog( Operation *op, SlapReply *rs, sessionlog *sl,
1553 sync_control *srs, BerVarray ctxcsn, int numcsns, int *sids )
1555 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1557 int i, j, ndel, num, nmods, mmods;
1558 char cbuf[LDAP_PVT_CSNSTR_BUFSIZE];
1560 struct berval delcsn[2];
1562 if ( !sl->sl_num ) {
1563 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1571 uuids = op->o_tmpalloc( (num+1) * sizeof( struct berval ) +
1572 num * UUID_LEN, op->o_tmpmemctx );
1573 uuids[0].bv_val = (char *)(uuids + num + 1);
1575 delcsn[0].bv_len = 0;
1576 delcsn[0].bv_val = cbuf;
1577 BER_BVZERO(&delcsn[1]);
1579 /* Make a copy of the relevant UUIDs. Put the Deletes up front
1580 * and everything else at the end. Do this first so we can
1581 * unlock the list mutex.
1583 Debug( LDAP_DEBUG_SYNC, "srs csn %s\n",
1584 srs->sr_state.ctxcsn[0].bv_val, 0, 0 );
1585 for ( se=sl->sl_head; se; se=se->se_next ) {
1587 Debug( LDAP_DEBUG_SYNC, "log csn %s\n", se->se_csn.bv_val, 0, 0 );
1589 for ( k=0; k<srs->sr_state.numcsns; k++ ) {
1590 if ( se->se_sid == srs->sr_state.sids[k] ) {
1591 ndel = ber_bvcmp( &se->se_csn, &srs->sr_state.ctxcsn[k] );
1596 Debug( LDAP_DEBUG_SYNC, "cmp %d, too old\n", ndel, 0, 0 );
1600 for ( k=0; k<numcsns; k++ ) {
1601 if ( se->se_sid == sids[k] ) {
1602 ndel = ber_bvcmp( &se->se_csn, &ctxcsn[k] );
1607 Debug( LDAP_DEBUG_SYNC, "cmp %d, too new\n", ndel, 0, 0 );
1610 if ( se->se_tag == LDAP_REQ_DELETE ) {
1613 AC_MEMCPY( cbuf, se->se_csn.bv_val, se->se_csn.bv_len );
1614 delcsn[0].bv_len = se->se_csn.bv_len;
1615 delcsn[0].bv_val[delcsn[0].bv_len] = '\0';
1620 uuids[j].bv_val = uuids[0].bv_val + (j * UUID_LEN);
1621 AC_MEMCPY(uuids[j].bv_val, se->se_uuid.bv_val, UUID_LEN);
1622 uuids[j].bv_len = UUID_LEN;
1624 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1628 /* Zero out unused slots */
1629 for ( i=ndel; i < num - nmods; i++ )
1630 uuids[i].bv_len = 0;
1632 /* Mods must be validated to see if they belong in this delete set.
1636 /* Strip any duplicates */
1637 for ( i=0; i<nmods; i++ ) {
1638 for ( j=0; j<ndel; j++ ) {
1639 if ( bvmatch( &uuids[j], &uuids[num - 1 - i] )) {
1640 uuids[num - 1 - i].bv_len = 0;
1645 if ( uuids[num - 1 - i].bv_len == 0 ) continue;
1646 for ( j=0; j<i; j++ ) {
1647 if ( bvmatch( &uuids[num - 1 - j], &uuids[num - 1 - i] )) {
1648 uuids[num - 1 - i].bv_len = 0;
1657 SlapReply frs = { REP_RESULT };
1660 AttributeAssertion eq = ATTRIBUTEASSERTION_INIT;
1661 slap_callback cb = {0};
1665 fop.o_sync_mode = 0;
1666 fop.o_callback = &cb;
1667 fop.ors_limit = NULL;
1668 fop.ors_tlimit = SLAP_NO_LIMIT;
1669 fop.ors_attrs = slap_anlist_all_attributes;
1670 fop.ors_attrsonly = 0;
1671 fop.o_managedsait = SLAP_CONTROL_CRITICAL;
1673 af.f_choice = LDAP_FILTER_AND;
1676 mf.f_choice = LDAP_FILTER_EQUALITY;
1678 mf.f_av_desc = slap_schema.si_ad_entryUUID;
1679 mf.f_next = fop.ors_filter;
1681 fop.ors_filter = ⁡
1683 cb.sc_response = playlog_cb;
1684 fop.o_bd->bd_info = (BackendInfo *)on->on_info;
1686 for ( i=ndel; i<num; i++ ) {
1687 if ( uuids[i].bv_len == 0 ) continue;
1689 mf.f_av_value = uuids[i];
1690 cb.sc_private = NULL;
1692 frs.sr_nentries = 0;
1693 rc = fop.o_bd->be_search( &fop, &frs );
1695 /* If entry was not found, add to delete list */
1696 if ( !cb.sc_private ) {
1697 uuids[ndel++] = uuids[i];
1700 fop.o_bd->bd_info = (BackendInfo *)on;
1703 struct berval cookie;
1705 if ( delcsn[0].bv_len ) {
1706 slap_compose_sync_cookie( op, &cookie, delcsn, srs->sr_state.rid,
1707 slap_serverID ? slap_serverID : -1 );
1709 Debug( LDAP_DEBUG_SYNC, "syncprov_playlog: cookie=%s\n", cookie.bv_val, 0, 0 );
1712 uuids[ndel].bv_val = NULL;
1713 syncprov_sendinfo( op, rs, LDAP_TAG_SYNC_ID_SET,
1714 delcsn[0].bv_len ? &cookie : NULL, 0, uuids, 1 );
1715 if ( delcsn[0].bv_len ) {
1716 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
1719 op->o_tmpfree( uuids, op->o_tmpmemctx );
1723 syncprov_op_response( Operation *op, SlapReply *rs )
1725 opcookie *opc = op->o_callback->sc_private;
1726 slap_overinst *on = opc->son;
1727 syncprov_info_t *si = on->on_bi.bi_private;
1730 if ( rs->sr_err == LDAP_SUCCESS )
1732 struct berval maxcsn;
1733 char cbuf[LDAP_PVT_CSNSTR_BUFSIZE];
1734 int do_check = 0, have_psearches, foundit, csn_changed = 0;
1736 ldap_pvt_thread_mutex_lock( &si->si_resp_mutex );
1738 /* Update our context CSN */
1740 maxcsn.bv_val = cbuf;
1741 maxcsn.bv_len = sizeof(cbuf);
1742 ldap_pvt_thread_rdwr_wlock( &si->si_csn_rwlock );
1744 slap_get_commit_csn( op, &maxcsn, &foundit );
1745 if ( BER_BVISEMPTY( &maxcsn ) && SLAP_GLUE_SUBORDINATE( op->o_bd )) {
1746 /* syncrepl queues the CSN values in the db where
1747 * it is configured , not where the changes are made.
1748 * So look for a value in the glue db if we didn't
1749 * find any in this db.
1751 BackendDB *be = op->o_bd;
1752 op->o_bd = select_backend( &be->be_nsuffix[0], 1);
1753 maxcsn.bv_val = cbuf;
1754 maxcsn.bv_len = sizeof(cbuf);
1755 slap_get_commit_csn( op, &maxcsn, &foundit );
1758 if ( !BER_BVISEMPTY( &maxcsn ) ) {
1761 Syntax *syn = slap_schema.si_ad_contextCSN->ad_type->sat_syntax;
1762 assert( !syn->ssyn_validate( syn, &maxcsn ));
1764 sid = slap_parse_csn_sid( &maxcsn );
1765 for ( i=0; i<si->si_numcsns; i++ ) {
1766 if ( sid == si->si_sids[i] ) {
1767 if ( ber_bvcmp( &maxcsn, &si->si_ctxcsn[i] ) > 0 ) {
1768 ber_bvreplace( &si->si_ctxcsn[i], &maxcsn );
1774 /* It's a new SID for us */
1775 if ( i == si->si_numcsns ) {
1776 value_add_one( &si->si_ctxcsn, &maxcsn );
1779 si->si_sids = ch_realloc( si->si_sids, si->si_numcsns *
1781 si->si_sids[i] = sid;
1785 /* Don't do any processing for consumer contextCSN updates */
1786 if ( op->o_dont_replicate ) {
1787 if ( op->o_tag == LDAP_REQ_MODIFY &&
1788 op->orm_modlist->sml_op == LDAP_MOD_REPLACE &&
1789 op->orm_modlist->sml_desc == slap_schema.si_ad_contextCSN ) {
1790 /* Catch contextCSN updates from syncrepl. We have to look at
1791 * all the attribute values, as there may be more than one csn
1792 * that changed, and only one can be passed in the csn queue.
1794 Modifications *mod = op->orm_modlist;
1797 for ( i=0; i<mod->sml_numvals; i++ ) {
1798 sid = slap_parse_csn_sid( &mod->sml_values[i] );
1799 for ( j=0; j<si->si_numcsns; j++ ) {
1800 if ( sid == si->si_sids[j] ) {
1801 if ( ber_bvcmp( &mod->sml_values[i], &si->si_ctxcsn[j] ) > 0 ) {
1802 ber_bvreplace( &si->si_ctxcsn[j], &mod->sml_values[i] );
1809 if ( j == si->si_numcsns ) {
1810 value_add_one( &si->si_ctxcsn, &mod->sml_values[i] );
1812 si->si_sids = ch_realloc( si->si_sids, si->si_numcsns *
1814 si->si_sids[j] = sid;
1820 ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
1822 if ( csn_changed ) {
1824 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1825 for ( ss = si->si_ops; ss; ss = ss->s_next ) {
1826 if ( ss->s_op->o_abandon )
1828 /* Send the updated csn to all syncrepl consumers,
1829 * including the server from which it originated.
1830 * The syncrepl consumer and syncprov provider on
1831 * the originating server may be configured to store
1832 * their csn values in different entries.
1834 syncprov_qresp( opc, ss, LDAP_SYNC_NEW_COOKIE );
1836 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1839 ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
1845 if ( si->si_chkops || si->si_chktime ) {
1846 /* Never checkpoint adding the context entry,
1849 if ( op->o_tag != LDAP_REQ_ADD ||
1850 !dn_match( &op->o_req_ndn, &si->si_contextdn )) {
1851 if ( si->si_chkops && si->si_numops >= si->si_chkops ) {
1855 if ( si->si_chktime &&
1856 (op->o_time - si->si_chklast >= si->si_chktime )) {
1857 if ( si->si_chklast ) {
1859 si->si_chklast = op->o_time;
1866 si->si_dirty = !csn_changed;
1867 ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
1870 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
1871 syncprov_checkpoint( op, rs, on );
1872 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
1875 /* only update consumer ctx if this is a newer csn */
1876 if ( csn_changed ) {
1877 opc->sctxcsn = maxcsn;
1880 /* Handle any persistent searches */
1881 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1882 have_psearches = ( si->si_ops != NULL );
1883 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1884 if ( have_psearches ) {
1887 case LDAP_REQ_MODIFY:
1888 case LDAP_REQ_MODRDN:
1889 case LDAP_REQ_EXTENDED:
1890 syncprov_matchops( op, opc, 0 );
1892 case LDAP_REQ_DELETE:
1893 /* for each match in opc->smatches:
1896 for ( sm = opc->smatches; sm; sm=sm->sm_next ) {
1897 if ( sm->sm_op->s_op->o_abandon )
1899 syncprov_qresp( opc, sm->sm_op, LDAP_SYNC_DELETE );
1905 /* Add any log records */
1906 if ( si->si_logs && op->o_tag != LDAP_REQ_ADD ) {
1907 syncprov_add_slog( op );
1909 leave: ldap_pvt_thread_mutex_unlock( &si->si_resp_mutex );
1911 return SLAP_CB_CONTINUE;
1914 /* We don't use a subentry to store the context CSN any more.
1915 * We expose the current context CSN as an operational attribute
1916 * of the suffix entry.
1919 syncprov_op_compare( Operation *op, SlapReply *rs )
1921 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1922 syncprov_info_t *si = on->on_bi.bi_private;
1923 int rc = SLAP_CB_CONTINUE;
1925 if ( dn_match( &op->o_req_ndn, &si->si_contextdn ) &&
1926 op->oq_compare.rs_ava->aa_desc == slap_schema.si_ad_contextCSN )
1931 e.e_name = si->si_contextdn;
1932 e.e_nname = si->si_contextdn;
1935 a.a_desc = slap_schema.si_ad_contextCSN;
1937 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
1939 a.a_vals = si->si_ctxcsn;
1940 a.a_nvals = a.a_vals;
1941 a.a_numvals = si->si_numcsns;
1943 rs->sr_err = access_allowed( op, &e, op->oq_compare.rs_ava->aa_desc,
1944 &op->oq_compare.rs_ava->aa_value, ACL_COMPARE, NULL );
1945 if ( ! rs->sr_err ) {
1946 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1947 goto return_results;
1950 if ( get_assert( op ) &&
1951 ( test_filter( op, &e, get_assertion( op ) ) != LDAP_COMPARE_TRUE ) )
1953 rs->sr_err = LDAP_ASSERTION_FAILED;
1954 goto return_results;
1958 rs->sr_err = LDAP_COMPARE_FALSE;
1960 if ( attr_valfind( &a,
1961 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
1962 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
1963 &op->oq_compare.rs_ava->aa_value, NULL, op->o_tmpmemctx ) == 0 )
1965 rs->sr_err = LDAP_COMPARE_TRUE;
1970 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
1972 send_ldap_result( op, rs );
1974 if( rs->sr_err == LDAP_COMPARE_FALSE || rs->sr_err == LDAP_COMPARE_TRUE ) {
1975 rs->sr_err = LDAP_SUCCESS;
1984 syncprov_op_mod( Operation *op, SlapReply *rs )
1986 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1987 syncprov_info_t *si = on->on_bi.bi_private;
1990 int have_psearches, cbsize;
1992 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1993 have_psearches = ( si->si_ops != NULL );
1995 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1997 cbsize = sizeof(slap_callback) + sizeof(opcookie) +
1998 (have_psearches ? sizeof(modinst) : 0 );
2000 cb = op->o_tmpcalloc(1, cbsize, op->o_tmpmemctx);
2001 opc = (opcookie *)(cb+1);
2003 cb->sc_response = syncprov_op_response;
2004 cb->sc_cleanup = syncprov_op_cleanup;
2005 cb->sc_private = opc;
2006 cb->sc_next = op->o_callback;
2007 op->o_callback = cb;
2011 if ( op->o_csn.bv_val ) {
2012 opc->osid = slap_parse_csn_sid( &op->o_csn );
2014 if ( op->o_controls ) {
2015 struct sync_cookie *scook =
2016 op->o_controls[slap_cids.sc_LDAPsync];
2018 opc->rsid = scook->sid;
2021 /* If there are active persistent searches, lock this operation.
2022 * See seqmod.c for the locking logic on its own.
2024 if ( have_psearches ) {
2025 modtarget *mt, mtdummy;
2028 mi = (modinst *)(opc+1);
2031 /* See if we're already modifying this entry... */
2033 ldap_pvt_thread_mutex_lock( &si->si_mods_mutex );
2034 mt = avl_find( si->si_mods, &mtdummy, sp_avl_cmp );
2036 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
2037 if ( mt->mt_mods == NULL ) {
2038 /* Cannot reuse this mt, as another thread is about
2039 * to release it in syncprov_op_cleanup.
2041 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
2046 ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
2047 mt->mt_tail->mi_next = mi;
2049 /* wait for this op to get to head of list */
2050 while ( mt->mt_mods != mi ) {
2051 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
2052 /* FIXME: if dynamic config can delete overlays or
2053 * databases we'll have to check for cleanup here.
2054 * Currently it's not an issue because there are
2055 * no dynamic config deletes...
2057 if ( slapd_shutdown )
2058 return SLAPD_ABANDON;
2060 if ( !ldap_pvt_thread_pool_pausecheck( &connection_pool ))
2061 ldap_pvt_thread_yield();
2062 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
2064 /* clean up if the caller is giving up */
2065 if ( op->o_abandon ) {
2067 for ( m2 = mt->mt_mods; m2->mi_next != mi;
2069 m2->mi_next = mi->mi_next;
2070 if ( mt->mt_tail == mi ) mt->mt_tail = m2;
2071 op->o_tmpfree( cb, op->o_tmpmemctx );
2072 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
2073 return SLAPD_ABANDON;
2076 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
2078 /* Record that we're modifying this entry now */
2079 mt = ch_malloc( sizeof(modtarget) );
2082 mt->mt_op = mi->mi_op;
2083 ldap_pvt_thread_mutex_init( &mt->mt_mutex );
2084 avl_insert( &si->si_mods, mt, sp_avl_cmp, avl_dup_error );
2085 ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
2090 if (( have_psearches || si->si_logs ) && op->o_tag != LDAP_REQ_ADD )
2091 syncprov_matchops( op, opc, 1 );
2093 return SLAP_CB_CONTINUE;
2097 syncprov_op_extended( Operation *op, SlapReply *rs )
2099 if ( exop_is_write( op ))
2100 return syncprov_op_mod( op, rs );
2102 return SLAP_CB_CONTINUE;
2105 typedef struct searchstate {
2106 slap_overinst *ss_on;
2108 BerVarray ss_ctxcsn;
2111 #define SS_PRESENT 0x01
2112 #define SS_CHANGED 0x02
2117 syncprov_search_cleanup( Operation *op, SlapReply *rs )
2119 if ( rs->sr_ctrls ) {
2120 op->o_tmpfree( rs->sr_ctrls[0], op->o_tmpmemctx );
2121 op->o_tmpfree( rs->sr_ctrls, op->o_tmpmemctx );
2122 rs->sr_ctrls = NULL;
2127 typedef struct SyncOperationBuffer {
2131 AttributeName sob_extra; /* not always present */
2132 /* Further data allocated here */
2133 } SyncOperationBuffer;
2136 syncprov_detach_op( Operation *op, syncops *so, slap_overinst *on )
2138 SyncOperationBuffer *sopbuf2;
2143 GroupAssertion *g1, *g2;
2145 /* count the search attrs */
2146 for (i=0; op->ors_attrs && !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++) {
2147 alen += op->ors_attrs[i].an_name.bv_len + 1;
2149 /* Make a new copy of the operation */
2150 size = offsetof( SyncOperationBuffer, sob_extra ) +
2151 (i ? ( (i+1) * sizeof(AttributeName) + alen) : 0) +
2152 op->o_req_dn.bv_len + 1 +
2153 op->o_req_ndn.bv_len + 1 +
2154 op->o_ndn.bv_len + 1 +
2155 so->s_filterstr.bv_len + 1;
2156 sopbuf2 = ch_calloc( 1, size );
2157 op2 = &sopbuf2->sob_op;
2158 op2->o_hdr = &sopbuf2->sob_hdr;
2159 LDAP_SLIST_FIRST(&op2->o_extra) = &sopbuf2->sob_oe;
2161 /* Copy the fields we care about explicitly, leave the rest alone */
2162 *op2->o_hdr = *op->o_hdr;
2163 op2->o_tag = op->o_tag;
2164 op2->o_time = op->o_time;
2165 op2->o_bd = on->on_info->oi_origdb;
2166 op2->o_request = op->o_request;
2167 op2->o_managedsait = op->o_managedsait;
2168 LDAP_SLIST_FIRST(&op2->o_extra)->oe_key = on;
2169 LDAP_SLIST_NEXT(LDAP_SLIST_FIRST(&op2->o_extra), oe_next) = NULL;
2171 ptr = (char *) sopbuf2 + offsetof( SyncOperationBuffer, sob_extra );
2173 op2->ors_attrs = (AttributeName *) ptr;
2174 ptr = (char *) &op2->ors_attrs[i+1];
2175 for (i=0; !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++) {
2176 op2->ors_attrs[i] = op->ors_attrs[i];
2177 op2->ors_attrs[i].an_name.bv_val = ptr;
2178 ptr = lutil_strcopy( ptr, op->ors_attrs[i].an_name.bv_val ) + 1;
2180 BER_BVZERO( &op2->ors_attrs[i].an_name );
2183 op2->o_authz = op->o_authz;
2184 op2->o_ndn.bv_val = ptr;
2185 ptr = lutil_strcopy(ptr, op->o_ndn.bv_val) + 1;
2186 op2->o_dn = op2->o_ndn;
2187 op2->o_req_dn.bv_len = op->o_req_dn.bv_len;
2188 op2->o_req_dn.bv_val = ptr;
2189 ptr = lutil_strcopy(ptr, op->o_req_dn.bv_val) + 1;
2190 op2->o_req_ndn.bv_len = op->o_req_ndn.bv_len;
2191 op2->o_req_ndn.bv_val = ptr;
2192 ptr = lutil_strcopy(ptr, op->o_req_ndn.bv_val) + 1;
2193 op2->ors_filterstr.bv_val = ptr;
2194 strcpy( ptr, so->s_filterstr.bv_val );
2195 op2->ors_filterstr.bv_len = so->s_filterstr.bv_len;
2197 /* Skip the AND/GE clause that we stuck on in front */
2198 if ( so->s_flags & PS_FIX_FILTER ) {
2199 op2->ors_filter = op->ors_filter->f_and->f_next;
2200 so->s_flags ^= PS_FIX_FILTER;
2202 op2->ors_filter = op->ors_filter;
2204 op2->ors_filter = filter_dup( op2->ors_filter, NULL );
2207 /* Copy any cached group ACLs individually */
2208 op2->o_groups = NULL;
2209 for ( g1=op->o_groups; g1; g1=g1->ga_next ) {
2210 g2 = ch_malloc( sizeof(GroupAssertion) + g1->ga_len );
2212 strcpy( g2->ga_ndn, g1->ga_ndn );
2213 g2->ga_next = op2->o_groups;
2216 /* Don't allow any further group caching */
2217 op2->o_do_not_cache = 1;
2219 /* Add op2 to conn so abandon will find us */
2220 op->o_conn->c_n_ops_executing++;
2221 op->o_conn->c_n_ops_completed--;
2222 LDAP_STAILQ_INSERT_TAIL( &op->o_conn->c_ops, op2, o_next );
2223 so->s_flags |= PS_IS_DETACHED;
2225 /* Prevent anyone else from trying to send a result for this op */
2230 syncprov_search_response( Operation *op, SlapReply *rs )
2232 searchstate *ss = op->o_callback->sc_private;
2233 slap_overinst *on = ss->ss_on;
2234 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2235 sync_control *srs = op->o_controls[slap_cids.sc_LDAPsync];
2237 if ( rs->sr_type == REP_SEARCH || rs->sr_type == REP_SEARCHREF ) {
2239 /* If we got a referral without a referral object, there's
2240 * something missing that we cannot replicate. Just ignore it.
2241 * The consumer will abort because we didn't send the expected
2244 if ( !rs->sr_entry ) {
2245 assert( rs->sr_entry != NULL );
2246 Debug( LDAP_DEBUG_ANY, "bogus referral in context\n",0,0,0 );
2247 return SLAP_CB_CONTINUE;
2249 a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_entryCSN );
2250 if ( a == NULL && rs->sr_operational_attrs != NULL ) {
2251 a = attr_find( rs->sr_operational_attrs, slap_schema.si_ad_entryCSN );
2255 sid = slap_parse_csn_sid( &a->a_nvals[0] );
2257 /* Don't send changed entries back to the originator */
2258 if ( sid == srs->sr_state.sid && srs->sr_state.numcsns ) {
2259 Debug( LDAP_DEBUG_SYNC,
2260 "Entry %s changed by peer, ignored\n",
2261 rs->sr_entry->e_name.bv_val, 0, 0 );
2262 return LDAP_SUCCESS;
2265 /* If not a persistent search */
2267 /* Make sure entry is less than the snapshot'd contextCSN */
2268 for ( i=0; i<ss->ss_numcsns; i++ ) {
2269 if ( sid == ss->ss_sids[i] && ber_bvcmp( &a->a_nvals[0],
2270 &ss->ss_ctxcsn[i] ) > 0 ) {
2271 Debug( LDAP_DEBUG_SYNC,
2272 "Entry %s CSN %s greater than snapshot %s\n",
2273 rs->sr_entry->e_name.bv_val,
2274 a->a_nvals[0].bv_val,
2275 ss->ss_ctxcsn[i].bv_val );
2276 return LDAP_SUCCESS;
2281 /* Don't send old entries twice */
2282 if ( srs->sr_state.ctxcsn ) {
2283 for ( i=0; i<srs->sr_state.numcsns; i++ ) {
2284 if ( sid == srs->sr_state.sids[i] &&
2285 ber_bvcmp( &a->a_nvals[0],
2286 &srs->sr_state.ctxcsn[i] )<= 0 ) {
2287 Debug( LDAP_DEBUG_SYNC,
2288 "Entry %s CSN %s older or equal to ctx %s\n",
2289 rs->sr_entry->e_name.bv_val,
2290 a->a_nvals[0].bv_val,
2291 srs->sr_state.ctxcsn[i].bv_val );
2292 return LDAP_SUCCESS;
2297 rs->sr_ctrls = op->o_tmpalloc( sizeof(LDAPControl *)*2,
2299 rs->sr_ctrls[1] = NULL;
2300 /* If we're in delta-sync mode, always send a cookie */
2301 if ( si->si_nopres && si->si_usehint && a ) {
2302 struct berval cookie;
2303 slap_compose_sync_cookie( op, &cookie, a->a_nvals, srs->sr_state.rid, slap_serverID ? slap_serverID : -1 );
2304 rs->sr_err = syncprov_state_ctrl( op, rs, rs->sr_entry,
2305 LDAP_SYNC_ADD, rs->sr_ctrls, 0, 1, &cookie );
2307 rs->sr_err = syncprov_state_ctrl( op, rs, rs->sr_entry,
2308 LDAP_SYNC_ADD, rs->sr_ctrls, 0, 0, NULL );
2310 } else if ( rs->sr_type == REP_RESULT && rs->sr_err == LDAP_SUCCESS ) {
2311 struct berval cookie = BER_BVNULL;
2313 if ( ( ss->ss_flags & SS_CHANGED ) &&
2314 ss->ss_ctxcsn && !BER_BVISNULL( &ss->ss_ctxcsn[0] )) {
2315 slap_compose_sync_cookie( op, &cookie, ss->ss_ctxcsn,
2316 srs->sr_state.rid, slap_serverID ? slap_serverID : -1 );
2318 Debug( LDAP_DEBUG_SYNC, "syncprov_search_response: cookie=%s\n", cookie.bv_val, 0, 0 );
2321 /* Is this a regular refresh?
2322 * Note: refresh never gets here if there were no changes
2325 rs->sr_ctrls = op->o_tmpalloc( sizeof(LDAPControl *)*2,
2327 rs->sr_ctrls[1] = NULL;
2328 rs->sr_err = syncprov_done_ctrl( op, rs, rs->sr_ctrls,
2329 0, 1, &cookie, ( ss->ss_flags & SS_PRESENT ) ? LDAP_SYNC_REFRESH_PRESENTS :
2330 LDAP_SYNC_REFRESH_DELETES );
2331 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
2333 /* It's RefreshAndPersist, transition to Persist phase */
2334 syncprov_sendinfo( op, rs, ( ss->ss_flags & SS_PRESENT ) ?
2335 LDAP_TAG_SYNC_REFRESH_PRESENT : LDAP_TAG_SYNC_REFRESH_DELETE,
2336 ( ss->ss_flags & SS_CHANGED ) ? &cookie : NULL,
2338 if ( !BER_BVISNULL( &cookie ))
2339 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
2341 /* Detach this Op from frontend control */
2342 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
2344 /* But not if this connection was closed along the way */
2345 if ( op->o_abandon ) {
2346 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
2347 /* syncprov_ab_cleanup will free this syncop */
2348 return SLAPD_ABANDON;
2351 ldap_pvt_thread_mutex_lock( &ss->ss_so->s_mutex );
2352 /* Turn off the refreshing flag */
2353 ss->ss_so->s_flags ^= PS_IS_REFRESHING;
2355 syncprov_detach_op( op, ss->ss_so, on );
2357 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
2359 /* If there are queued responses, fire them off */
2360 if ( ss->ss_so->s_res )
2361 syncprov_qstart( ss->ss_so );
2362 ldap_pvt_thread_mutex_unlock( &ss->ss_so->s_mutex );
2365 return LDAP_SUCCESS;
2369 return SLAP_CB_CONTINUE;
2373 syncprov_op_search( Operation *op, SlapReply *rs )
2375 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
2376 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2378 int gotstate = 0, changed = 0, do_present = 0;
2379 syncops *sop = NULL;
2383 int i, *sids, numcsns;
2384 struct berval mincsn;
2387 if ( !(op->o_sync_mode & SLAP_SYNC_REFRESH) ) return SLAP_CB_CONTINUE;
2389 if ( op->ors_deref & LDAP_DEREF_SEARCHING ) {
2390 send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR, "illegal value for derefAliases" );
2394 srs = op->o_controls[slap_cids.sc_LDAPsync];
2396 /* If this is a persistent search, set it up right away */
2397 if ( op->o_sync_mode & SLAP_SYNC_PERSIST ) {
2407 so.s_flags = PS_IS_REFRESHING | PS_FIND_BASE;
2408 /* syncprov_findbase expects to be called as a callback... */
2409 sc.sc_private = &opc;
2411 ldap_pvt_thread_mutex_init( &so.s_mutex );
2412 cb = op->o_callback;
2413 op->o_callback = ≻
2414 rs->sr_err = syncprov_findbase( op, &fc );
2415 op->o_callback = cb;
2416 ldap_pvt_thread_mutex_destroy( &so.s_mutex );
2418 if ( rs->sr_err != LDAP_SUCCESS ) {
2419 send_ldap_result( op, rs );
2422 sop = ch_malloc( sizeof( syncops ));
2424 ldap_pvt_thread_mutex_init( &sop->s_mutex );
2425 sop->s_rid = srs->sr_state.rid;
2426 sop->s_sid = srs->sr_state.sid;
2429 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
2430 while ( si->si_active ) {
2431 /* Wait for active mods to finish before proceeding, as they
2432 * may already have inspected the si_ops list looking for
2433 * consumers to replicate the change to. Using the log
2434 * doesn't help, as we may finish playing it before the
2435 * active mods gets added to it.
2437 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
2438 if ( slapd_shutdown )
2439 return SLAPD_ABANDON;
2440 if ( !ldap_pvt_thread_pool_pausecheck( &connection_pool ))
2441 ldap_pvt_thread_yield();
2442 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
2444 sop->s_next = si->si_ops;
2446 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
2449 /* snapshot the ctxcsn */
2450 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
2451 numcsns = si->si_numcsns;
2453 ber_bvarray_dup_x( &ctxcsn, si->si_ctxcsn, op->o_tmpmemctx );
2454 sids = op->o_tmpalloc( numcsns * sizeof(int), op->o_tmpmemctx );
2455 for ( i=0; i<numcsns; i++ )
2456 sids[i] = si->si_sids[i];
2461 dirty = si->si_dirty;
2462 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
2464 /* If we have a cookie, handle the PRESENT lookups */
2465 if ( srs->sr_state.ctxcsn ) {
2469 /* If we don't have any CSN of our own yet, pretend nothing
2475 if ( !si->si_nopres )
2476 do_present = SS_PRESENT;
2478 /* If there are SIDs we don't recognize in the cookie, drop them */
2479 for (i=0; i<srs->sr_state.numcsns; ) {
2480 for (j=0; j<numcsns; j++) {
2481 if ( srs->sr_state.sids[i] == sids[j] ) {
2486 if ( j == numcsns ) {
2487 struct berval tmp = srs->sr_state.ctxcsn[i];
2488 j = srs->sr_state.numcsns - 1;
2489 srs->sr_state.ctxcsn[i] = srs->sr_state.ctxcsn[j];
2491 srs->sr_state.ctxcsn[j] = tmp;
2492 srs->sr_state.numcsns = j;
2493 srs->sr_state.sids[i] = srs->sr_state.sids[j];
2499 /* Find the smallest CSN */
2500 mincsn = srs->sr_state.ctxcsn[0];
2501 for ( i=1; i<srs->sr_state.numcsns; i++ ) {
2502 if ( ber_bvcmp( &mincsn, &srs->sr_state.ctxcsn[i] ) > 0 )
2503 mincsn = srs->sr_state.ctxcsn[i];
2506 /* If nothing has changed, shortcut it */
2507 if ( srs->sr_state.numcsns == numcsns ) {
2509 for ( i=0; i<srs->sr_state.numcsns; i++ ) {
2510 for ( j=0; j<numcsns; j++ ) {
2511 if ( srs->sr_state.sids[i] != sids[j] )
2513 newer = ber_bvcmp( &srs->sr_state.ctxcsn[i], &ctxcsn[j] );
2514 /* If our state is newer, tell consumer about changes */
2516 changed = SS_CHANGED;
2517 else if ( newer > 0 ) {
2518 /* our state is older, complain to consumer */
2519 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
2520 rs->sr_text = "consumer state is newer than provider!";
2523 syncops **sp = &si->si_ops;
2525 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
2526 while ( *sp != sop )
2527 sp = &(*sp)->s_next;
2529 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
2532 rs->sr_ctrls = NULL;
2533 send_ldap_result( op, rs );
2541 if ( !changed && !dirty ) {
2543 no_change: if ( !(op->o_sync_mode & SLAP_SYNC_PERSIST) ) {
2544 LDAPControl *ctrls[2];
2548 syncprov_done_ctrl( op, rs, ctrls, 0, 0,
2549 NULL, LDAP_SYNC_REFRESH_DELETES );
2550 rs->sr_ctrls = ctrls;
2551 rs->sr_err = LDAP_SUCCESS;
2552 send_ldap_result( op, rs );
2553 rs->sr_ctrls = NULL;
2559 /* consumer doesn't have the right number of CSNs */
2560 changed = SS_CHANGED;
2562 /* Do we have a sessionlog for this search? */
2565 ldap_pvt_thread_mutex_lock( &sl->sl_mutex );
2566 /* Are there any log entries, and is the consumer state
2567 * present in the session log?
2569 if ( sl->sl_num > 0 && ber_bvcmp( &mincsn, &sl->sl_mincsn ) >= 0 ) {
2571 /* mutex is unlocked in playlog */
2572 syncprov_playlog( op, rs, sl, srs, ctxcsn, numcsns, sids );
2574 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
2577 /* Is the CSN still present in the database? */
2578 if ( syncprov_findcsn( op, FIND_CSN ) != LDAP_SUCCESS ) {
2579 /* No, so a reload is required */
2580 /* the 2.2 consumer doesn't send this hint */
2581 if ( si->si_usehint && srs->sr_rhint == 0 ) {
2583 ber_bvarray_free_x( ctxcsn, op->o_tmpmemctx );
2585 op->o_tmpfree( sids, op->o_tmpmemctx );
2586 rs->sr_err = LDAP_SYNC_REFRESH_REQUIRED;
2587 rs->sr_text = "sync cookie is stale";
2590 if ( srs->sr_state.ctxcsn ) {
2591 ber_bvarray_free_x( srs->sr_state.ctxcsn, op->o_tmpmemctx );
2592 srs->sr_state.ctxcsn = NULL;
2594 if ( srs->sr_state.sids ) {
2595 slap_sl_free( srs->sr_state.sids, op->o_tmpmemctx );
2596 srs->sr_state.sids = NULL;
2598 srs->sr_state.numcsns = 0;
2601 /* If changed and doing Present lookup, send Present UUIDs */
2602 if ( do_present && syncprov_findcsn( op, FIND_PRESENT ) !=
2605 ber_bvarray_free_x( ctxcsn, op->o_tmpmemctx );
2607 op->o_tmpfree( sids, op->o_tmpmemctx );
2612 /* No consumer state, assume something has changed */
2613 changed = SS_CHANGED;
2617 /* Append CSN range to search filter, save original filter
2618 * for persistent search evaluation
2621 sop->s_filterstr= op->ors_filterstr;
2624 /* If something changed, find the changes */
2625 if ( gotstate && ( changed || dirty ) ) {
2626 Filter *fand, *fava;
2628 fand = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
2629 fand->f_choice = LDAP_FILTER_AND;
2630 fand->f_next = NULL;
2631 fava = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
2633 fava->f_choice = LDAP_FILTER_GE;
2634 fava->f_ava = op->o_tmpalloc( sizeof(AttributeAssertion), op->o_tmpmemctx );
2635 fava->f_ava->aa_desc = slap_schema.si_ad_entryCSN;
2636 #ifdef LDAP_COMP_MATCH
2637 fava->f_ava->aa_cf = NULL;
2639 ber_dupbv_x( &fava->f_ava->aa_value, &mincsn, op->o_tmpmemctx );
2640 fava->f_next = op->ors_filter;
2642 ldap_pvt_thread_mutex_lock( &sop->s_mutex );
2643 op->ors_filter = fand;
2644 filter2bv_x( op, op->ors_filter, &op->ors_filterstr );
2646 sop->s_flags |= PS_FIX_FILTER;
2647 ldap_pvt_thread_mutex_unlock( &sop->s_mutex );
2651 /* Let our callback add needed info to returned entries */
2652 cb = op->o_tmpcalloc(1, sizeof(slap_callback)+sizeof(searchstate), op->o_tmpmemctx);
2653 ss = (searchstate *)(cb+1);
2656 ss->ss_flags = do_present | changed;
2657 ss->ss_ctxcsn = ctxcsn;
2658 ss->ss_numcsns = numcsns;
2660 cb->sc_response = syncprov_search_response;
2661 cb->sc_cleanup = syncprov_search_cleanup;
2662 cb->sc_private = ss;
2663 cb->sc_next = op->o_callback;
2664 op->o_callback = cb;
2666 /* If this is a persistent search and no changes were reported during
2667 * the refresh phase, just invoke the response callback to transition
2668 * us into persist phase
2670 if ( !changed && !dirty ) {
2671 rs->sr_err = LDAP_SUCCESS;
2672 rs->sr_nentries = 0;
2673 send_ldap_result( op, rs );
2676 return SLAP_CB_CONTINUE;
2680 syncprov_operational(
2684 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
2685 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2687 /* This prevents generating unnecessarily; frontend will strip
2688 * any statically stored copy.
2690 if ( op->o_sync != SLAP_CONTROL_NONE )
2691 return SLAP_CB_CONTINUE;
2693 if ( rs->sr_entry &&
2694 dn_match( &rs->sr_entry->e_nname, &si->si_contextdn )) {
2696 if ( SLAP_OPATTRS( rs->sr_attr_flags ) ||
2697 ad_inlist( slap_schema.si_ad_contextCSN, rs->sr_attrs )) {
2698 Attribute *a, **ap = NULL;
2700 for ( a=rs->sr_entry->e_attrs; a; a=a->a_next ) {
2701 if ( a->a_desc == slap_schema.si_ad_contextCSN )
2705 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
2706 if ( si->si_ctxcsn ) {
2708 for ( ap = &rs->sr_operational_attrs; *ap;
2709 ap=&(*ap)->a_next );
2711 a = attr_alloc( slap_schema.si_ad_contextCSN );
2716 if ( !(rs->sr_flags & REP_ENTRY_MODIFIABLE) ) {
2717 Entry *e = entry_dup( rs->sr_entry );
2718 if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
2719 overlay_entry_release_ov( op, rs->sr_entry, 0, on );
2720 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
2721 } else if ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) {
2722 entry_free( rs->sr_entry );
2726 REP_ENTRY_MODIFIABLE|REP_ENTRY_MUSTBEFREED;
2727 a = attr_find( rs->sr_entry->e_attrs,
2728 slap_schema.si_ad_contextCSN );
2730 if ( a->a_nvals != a->a_vals ) {
2731 ber_bvarray_free( a->a_nvals );
2734 ber_bvarray_free( a->a_vals );
2738 attr_valadd( a, si->si_ctxcsn, si->si_ctxcsn, si->si_numcsns );
2740 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
2743 return SLAP_CB_CONTINUE;
2753 static ConfigDriver sp_cf_gen;
2755 static ConfigTable spcfg[] = {
2756 { "syncprov-checkpoint", "ops> <minutes", 3, 3, 0, ARG_MAGIC|SP_CHKPT,
2757 sp_cf_gen, "( OLcfgOvAt:1.1 NAME 'olcSpCheckpoint' "
2758 "DESC 'ContextCSN checkpoint interval in ops and minutes' "
2759 "SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
2760 { "syncprov-sessionlog", "ops", 2, 2, 0, ARG_INT|ARG_MAGIC|SP_SESSL,
2761 sp_cf_gen, "( OLcfgOvAt:1.2 NAME 'olcSpSessionlog' "
2762 "DESC 'Session log size in ops' "
2763 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
2764 { "syncprov-nopresent", NULL, 2, 2, 0, ARG_ON_OFF|ARG_MAGIC|SP_NOPRES,
2765 sp_cf_gen, "( OLcfgOvAt:1.3 NAME 'olcSpNoPresent' "
2766 "DESC 'Omit Present phase processing' "
2767 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
2768 { "syncprov-reloadhint", NULL, 2, 2, 0, ARG_ON_OFF|ARG_MAGIC|SP_USEHINT,
2769 sp_cf_gen, "( OLcfgOvAt:1.4 NAME 'olcSpReloadHint' "
2770 "DESC 'Observe Reload Hint in Request control' "
2771 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
2772 { NULL, NULL, 0, 0, 0, ARG_IGNORED }
2775 static ConfigOCs spocs[] = {
2776 { "( OLcfgOvOc:1.1 "
2777 "NAME 'olcSyncProvConfig' "
2778 "DESC 'SyncRepl Provider configuration' "
2779 "SUP olcOverlayConfig "
2780 "MAY ( olcSpCheckpoint "
2781 "$ olcSpSessionlog "
2783 "$ olcSpReloadHint "
2785 Cft_Overlay, spcfg },
2790 sp_cf_gen(ConfigArgs *c)
2792 slap_overinst *on = (slap_overinst *)c->bi;
2793 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2796 if ( c->op == SLAP_CONFIG_EMIT ) {
2797 switch ( c->type ) {
2799 if ( si->si_chkops || si->si_chktime ) {
2801 /* we assume si_chktime is a multiple of 60
2802 * because the parsed value was originally
2803 * multiplied by 60 */
2804 bv.bv_len = snprintf( c->cr_msg, sizeof( c->cr_msg ),
2805 "%d %d", si->si_chkops, si->si_chktime/60 );
2806 if ( bv.bv_len >= sizeof( c->cr_msg ) ) {
2809 bv.bv_val = c->cr_msg;
2810 value_add_one( &c->rvalue_vals, &bv );
2817 if ( si->si_logs ) {
2818 c->value_int = si->si_logs->sl_size;
2824 if ( si->si_nopres ) {
2831 if ( si->si_usehint ) {
2839 } else if ( c->op == LDAP_MOD_DELETE ) {
2840 switch ( c->type ) {
2847 si->si_logs->sl_size = 0;
2849 rc = LDAP_NO_SUCH_ATTRIBUTE;
2852 if ( si->si_nopres )
2855 rc = LDAP_NO_SUCH_ATTRIBUTE;
2858 if ( si->si_usehint )
2861 rc = LDAP_NO_SUCH_ATTRIBUTE;
2866 switch ( c->type ) {
2868 if ( lutil_atoi( &si->si_chkops, c->argv[1] ) != 0 ) {
2869 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s unable to parse checkpoint ops # \"%s\"",
2870 c->argv[0], c->argv[1] );
2871 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2872 "%s: %s\n", c->log, c->cr_msg, 0 );
2873 return ARG_BAD_CONF;
2875 if ( si->si_chkops <= 0 ) {
2876 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s invalid checkpoint ops # \"%d\"",
2877 c->argv[0], si->si_chkops );
2878 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2879 "%s: %s\n", c->log, c->cr_msg, 0 );
2880 return ARG_BAD_CONF;
2882 if ( lutil_atoi( &si->si_chktime, c->argv[2] ) != 0 ) {
2883 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s unable to parse checkpoint time \"%s\"",
2884 c->argv[0], c->argv[1] );
2885 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2886 "%s: %s\n", c->log, c->cr_msg, 0 );
2887 return ARG_BAD_CONF;
2889 if ( si->si_chktime <= 0 ) {
2890 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s invalid checkpoint time \"%d\"",
2891 c->argv[0], si->si_chkops );
2892 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2893 "%s: %s\n", c->log, c->cr_msg, 0 );
2894 return ARG_BAD_CONF;
2896 si->si_chktime *= 60;
2900 int size = c->value_int;
2903 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s size %d is negative",
2905 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2906 "%s: %s\n", c->log, c->cr_msg, 0 );
2907 return ARG_BAD_CONF;
2911 sl = ch_malloc( sizeof( sessionlog ) + LDAP_PVT_CSNSTR_BUFSIZE );
2912 sl->sl_mincsn.bv_val = (char *)(sl+1);
2913 sl->sl_mincsn.bv_len = 0;
2915 sl->sl_head = sl->sl_tail = NULL;
2916 ldap_pvt_thread_mutex_init( &sl->sl_mutex );
2923 si->si_nopres = c->value_int;
2926 si->si_usehint = c->value_int;
2932 /* ITS#3456 we cannot run this search on the main thread, must use a
2933 * child thread in order to insure we have a big enough stack.
2940 syncprov_findcsn( ptr, FIND_MAXCSN );
2944 /* Read any existing contextCSN from the underlying db.
2945 * Then search for any entries newer than that. If no value exists,
2946 * just generate it. Cache whatever result.
2954 slap_overinst *on = (slap_overinst *) be->bd_info;
2955 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2957 Connection conn = { 0 };
2958 OperationBuffer opbuf;
2963 void *thrctx = NULL;
2965 if ( !SLAP_LASTMOD( be )) {
2966 Debug( LDAP_DEBUG_ANY,
2967 "syncprov_db_open: invalid config, lastmod must be enabled\n", 0, 0, 0 );
2971 if ( slapMode & SLAP_TOOL_MODE ) {
2975 rc = overlay_register_control( be, LDAP_CONTROL_SYNC );
2980 thrctx = ldap_pvt_thread_pool_context();
2981 connection_fake_init2( &conn, &opbuf, thrctx, 0 );
2984 op->o_dn = be->be_rootdn;
2985 op->o_ndn = be->be_rootndn;
2987 if ( SLAP_SYNC_SUBENTRY( be )) {
2988 build_new_dn( &si->si_contextdn, be->be_nsuffix,
2989 (struct berval *)&slap_ldapsync_cn_bv, NULL );
2991 si->si_contextdn = be->be_nsuffix[0];
2993 rc = overlay_entry_get_ov( op, &si->si_contextdn, NULL,
2994 slap_schema.si_ad_contextCSN, 0, &e, on );
2997 ldap_pvt_thread_t tid;
2999 a = attr_find( e->e_attrs, slap_schema.si_ad_contextCSN );
3001 ber_bvarray_dup_x( &si->si_ctxcsn, a->a_vals, NULL );
3002 si->si_numcsns = a->a_numvals;
3003 si->si_sids = slap_parse_csn_sids( si->si_ctxcsn, a->a_numvals, NULL );
3005 overlay_entry_release_ov( op, e, 0, on );
3006 if ( si->si_ctxcsn && !SLAP_DBCLEAN( be )) {
3007 op->o_req_dn = be->be_suffix[0];
3008 op->o_req_ndn = be->be_nsuffix[0];
3009 op->ors_scope = LDAP_SCOPE_SUBTREE;
3010 ldap_pvt_thread_create( &tid, 0, syncprov_db_otask, op );
3011 ldap_pvt_thread_join( tid, NULL );
3015 /* Didn't find a contextCSN, should we generate one? */
3016 if ( !si->si_ctxcsn ) {
3017 char csnbuf[ LDAP_PVT_CSNSTR_BUFSIZE ];
3020 if ( SLAP_SYNC_SHADOW( op->o_bd )) {
3021 /* If we're also a consumer, then don't generate anything.
3022 * Wait for our provider to send it to us, or for a local
3023 * modify if we have multimaster.
3027 csn.bv_val = csnbuf;
3028 csn.bv_len = sizeof( csnbuf );
3029 slap_get_csn( op, &csn, 0 );
3030 value_add_one( &si->si_ctxcsn, &csn );
3032 si->si_sids = ch_malloc( sizeof(int) );
3033 si->si_sids[0] = slap_serverID;
3035 /* make sure we do a checkpoint on close */
3040 op->o_bd->bd_info = (BackendInfo *)on;
3044 /* Write the current contextCSN into the underlying db.
3052 slap_overinst *on = (slap_overinst *) be->bd_info;
3053 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
3054 #ifdef SLAP_CONFIG_DELETE
3055 syncops *so, *sonext;
3056 #endif /* SLAP_CONFIG_DELETE */
3058 if ( slapMode & SLAP_TOOL_MODE ) {
3061 if ( si->si_numops ) {
3062 Connection conn = {0};
3063 OperationBuffer opbuf;
3065 SlapReply rs = {REP_RESULT};
3068 thrctx = ldap_pvt_thread_pool_context();
3069 connection_fake_init2( &conn, &opbuf, thrctx, 0 );
3072 op->o_dn = be->be_rootdn;
3073 op->o_ndn = be->be_rootndn;
3074 syncprov_checkpoint( op, &rs, on );
3077 #ifdef SLAP_CONFIG_DELETE
3078 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
3079 for ( so=si->si_ops, sonext=so; so; so=sonext ) {
3080 SlapReply rs = {REP_RESULT};
3081 rs.sr_err = LDAP_UNAVAILABLE;
3082 send_ldap_result( so->s_op, &rs );
3084 syncprov_drop_psearch( so, 0);
3087 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
3088 overlay_unregister_control( be, LDAP_CONTROL_SYNC );
3089 #endif /* SLAP_CONFIG_DELETE */
3100 slap_overinst *on = (slap_overinst *)be->bd_info;
3101 syncprov_info_t *si;
3103 if ( SLAP_ISGLOBALOVERLAY( be ) ) {
3104 Debug( LDAP_DEBUG_ANY,
3105 "syncprov must be instantiated within a database.\n",
3110 si = ch_calloc(1, sizeof(syncprov_info_t));
3111 on->on_bi.bi_private = si;
3112 ldap_pvt_thread_rdwr_init( &si->si_csn_rwlock );
3113 ldap_pvt_thread_mutex_init( &si->si_ops_mutex );
3114 ldap_pvt_thread_mutex_init( &si->si_mods_mutex );
3115 ldap_pvt_thread_mutex_init( &si->si_resp_mutex );
3117 csn_anlist[0].an_desc = slap_schema.si_ad_entryCSN;
3118 csn_anlist[0].an_name = slap_schema.si_ad_entryCSN->ad_cname;
3119 csn_anlist[1].an_desc = slap_schema.si_ad_entryUUID;
3120 csn_anlist[1].an_name = slap_schema.si_ad_entryUUID->ad_cname;
3122 uuid_anlist[0].an_desc = slap_schema.si_ad_entryUUID;
3123 uuid_anlist[0].an_name = slap_schema.si_ad_entryUUID->ad_cname;
3129 syncprov_db_destroy(
3134 slap_overinst *on = (slap_overinst *)be->bd_info;
3135 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
3138 if ( si->si_logs ) {
3139 slog_entry *se = si->si_logs->sl_head;
3142 slog_entry *se_next = se->se_next;
3147 ch_free( si->si_logs );
3149 if ( si->si_ctxcsn )
3150 ber_bvarray_free( si->si_ctxcsn );
3152 ch_free( si->si_sids );
3153 ldap_pvt_thread_mutex_destroy( &si->si_resp_mutex );
3154 ldap_pvt_thread_mutex_destroy( &si->si_mods_mutex );
3155 ldap_pvt_thread_mutex_destroy( &si->si_ops_mutex );
3156 ldap_pvt_thread_rdwr_destroy( &si->si_csn_rwlock );
3163 static int syncprov_parseCtrl (
3169 BerElementBuffer berbuf;
3170 BerElement *ber = (BerElement *)&berbuf;
3173 struct berval cookie = BER_BVNULL;
3177 if ( op->o_sync != SLAP_CONTROL_NONE ) {
3178 rs->sr_text = "Sync control specified multiple times";
3179 return LDAP_PROTOCOL_ERROR;
3182 if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
3183 rs->sr_text = "Sync control specified with pagedResults control";
3184 return LDAP_PROTOCOL_ERROR;
3187 if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
3188 rs->sr_text = "Sync control value is absent";
3189 return LDAP_PROTOCOL_ERROR;
3192 if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
3193 rs->sr_text = "Sync control value is empty";
3194 return LDAP_PROTOCOL_ERROR;
3197 /* Parse the control value
3198 * syncRequestValue ::= SEQUENCE {
3203 * refreshAndPersist (3)
3205 * cookie syncCookie OPTIONAL
3209 ber_init2( ber, &ctrl->ldctl_value, 0 );
3211 if ( (tag = ber_scanf( ber, "{i" /*}*/, &mode )) == LBER_ERROR ) {
3212 rs->sr_text = "Sync control : mode decoding error";
3213 return LDAP_PROTOCOL_ERROR;
3217 case LDAP_SYNC_REFRESH_ONLY:
3218 mode = SLAP_SYNC_REFRESH;
3220 case LDAP_SYNC_REFRESH_AND_PERSIST:
3221 mode = SLAP_SYNC_REFRESH_AND_PERSIST;
3224 rs->sr_text = "Sync control : unknown update mode";
3225 return LDAP_PROTOCOL_ERROR;
3228 tag = ber_peek_tag( ber, &len );
3230 if ( tag == LDAP_TAG_SYNC_COOKIE ) {
3231 if (( ber_scanf( ber, /*{*/ "m", &cookie )) == LBER_ERROR ) {
3232 rs->sr_text = "Sync control : cookie decoding error";
3233 return LDAP_PROTOCOL_ERROR;
3235 tag = ber_peek_tag( ber, &len );
3237 if ( tag == LDAP_TAG_RELOAD_HINT ) {
3238 if (( ber_scanf( ber, /*{*/ "b", &rhint )) == LBER_ERROR ) {
3239 rs->sr_text = "Sync control : rhint decoding error";
3240 return LDAP_PROTOCOL_ERROR;
3243 if (( ber_scanf( ber, /*{*/ "}")) == LBER_ERROR ) {
3244 rs->sr_text = "Sync control : decoding error";
3245 return LDAP_PROTOCOL_ERROR;
3247 sr = op->o_tmpcalloc( 1, sizeof(struct sync_control), op->o_tmpmemctx );
3248 sr->sr_rhint = rhint;
3249 if (!BER_BVISNULL(&cookie)) {
3250 ber_dupbv_x( &sr->sr_state.octet_str, &cookie, op->o_tmpmemctx );
3251 /* If parse fails, pretend no cookie was sent */
3252 if ( slap_parse_sync_cookie( &sr->sr_state, op->o_tmpmemctx ) ||
3253 sr->sr_state.rid == -1 ) {
3254 if ( sr->sr_state.ctxcsn ) {
3255 ber_bvarray_free_x( sr->sr_state.ctxcsn, op->o_tmpmemctx );
3256 sr->sr_state.ctxcsn = NULL;
3258 sr->sr_state.numcsns = 0;
3262 op->o_controls[slap_cids.sc_LDAPsync] = sr;
3264 op->o_sync = ctrl->ldctl_iscritical
3265 ? SLAP_CONTROL_CRITICAL
3266 : SLAP_CONTROL_NONCRITICAL;
3268 op->o_sync_mode |= mode; /* o_sync_mode shares o_sync */
3270 return LDAP_SUCCESS;
3273 /* This overlay is set up for dynamic loading via moduleload. For static
3274 * configuration, you'll need to arrange for the slap_overinst to be
3275 * initialized and registered by some other function inside slapd.
3278 static slap_overinst syncprov;
3281 syncprov_initialize()
3285 rc = register_supported_control( LDAP_CONTROL_SYNC,
3286 SLAP_CTRL_SEARCH, NULL,
3287 syncprov_parseCtrl, &slap_cids.sc_LDAPsync );
3288 if ( rc != LDAP_SUCCESS ) {
3289 Debug( LDAP_DEBUG_ANY,
3290 "syncprov_init: Failed to register control %d\n", rc, 0, 0 );
3294 syncprov.on_bi.bi_type = "syncprov";
3295 syncprov.on_bi.bi_db_init = syncprov_db_init;
3296 syncprov.on_bi.bi_db_destroy = syncprov_db_destroy;
3297 syncprov.on_bi.bi_db_open = syncprov_db_open;
3298 syncprov.on_bi.bi_db_close = syncprov_db_close;
3300 syncprov.on_bi.bi_op_abandon = syncprov_op_abandon;
3301 syncprov.on_bi.bi_op_cancel = syncprov_op_abandon;
3303 syncprov.on_bi.bi_op_add = syncprov_op_mod;
3304 syncprov.on_bi.bi_op_compare = syncprov_op_compare;
3305 syncprov.on_bi.bi_op_delete = syncprov_op_mod;
3306 syncprov.on_bi.bi_op_modify = syncprov_op_mod;
3307 syncprov.on_bi.bi_op_modrdn = syncprov_op_mod;
3308 syncprov.on_bi.bi_op_search = syncprov_op_search;
3309 syncprov.on_bi.bi_extended = syncprov_op_extended;
3310 syncprov.on_bi.bi_operational = syncprov_operational;
3312 syncprov.on_bi.bi_cf_ocs = spocs;
3314 generic_filter.f_desc = slap_schema.si_ad_objectClass;
3316 rc = config_register_schema( spcfg, spocs );
3317 if ( rc ) return rc;
3319 return overlay_register( &syncprov );
3322 #if SLAPD_OVER_SYNCPROV == SLAPD_MOD_DYNAMIC
3324 init_module( int argc, char *argv[] )
3326 return syncprov_initialize();
3328 #endif /* SLAPD_OVER_SYNCPROV == SLAPD_MOD_DYNAMIC */
3330 #endif /* defined(SLAPD_OVER_SYNCPROV) */