2 /* syncprov.c - syncrepl provider */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 2004-2017 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 /* All the info of a psearch result that's shared between
51 typedef struct resinfo {
52 struct syncres *ri_list;
56 struct berval ri_uuid;
58 struct berval ri_cookie;
60 ldap_pvt_thread_mutex_t ri_mutex;
63 /* A queued result of a persistent search */
64 typedef struct syncres {
65 struct syncres *s_next; /* list of results on this psearch queue */
66 struct syncres *s_rilist; /* list of psearches using this result */
71 /* Record of a persistent search */
72 typedef struct syncops {
73 struct syncops *s_next;
74 struct syncprov_info_t *s_si;
75 struct berval s_base; /* ndn of search base */
76 ID s_eid; /* entryID of search base */
77 Operation *s_op; /* search op */
80 struct berval s_filterstr;
81 int s_flags; /* search status */
82 #define PS_IS_REFRESHING 0x01
83 #define PS_IS_DETACHED 0x02
84 #define PS_WROTE_BASE 0x04
85 #define PS_FIND_BASE 0x08
86 #define PS_FIX_FILTER 0x10
87 #define PS_TASK_QUEUED 0x20
89 int s_inuse; /* reference count */
90 struct syncres *s_res;
91 struct syncres *s_restail;
93 ldap_pvt_thread_mutex_t s_mutex;
96 /* A received sync control */
97 typedef struct sync_control {
98 struct sync_cookie sr_state;
102 #if 0 /* moved back to slap.h */
103 #define o_sync o_ctrlflag[slap_cids.sc_LDAPsync]
105 /* o_sync_mode uses data bits of o_sync */
106 #define o_sync_mode o_ctrlflag[slap_cids.sc_LDAPsync]
108 #define SLAP_SYNC_NONE (LDAP_SYNC_NONE<<SLAP_CONTROL_SHIFT)
109 #define SLAP_SYNC_REFRESH (LDAP_SYNC_REFRESH_ONLY<<SLAP_CONTROL_SHIFT)
110 #define SLAP_SYNC_PERSIST (LDAP_SYNC_RESERVED<<SLAP_CONTROL_SHIFT)
111 #define SLAP_SYNC_REFRESH_AND_PERSIST (LDAP_SYNC_REFRESH_AND_PERSIST<<SLAP_CONTROL_SHIFT)
113 /* Record of which searches matched at premodify step */
114 typedef struct syncmatches {
115 struct syncmatches *sm_next;
119 /* Session log data */
120 typedef struct slog_entry {
121 struct slog_entry *se_next;
122 struct berval se_uuid;
123 struct berval se_csn;
128 typedef struct sessionlog {
136 ldap_pvt_thread_mutex_t sl_mutex;
139 /* The main state for this overlay */
140 typedef struct syncprov_info_t {
142 struct berval si_contextdn;
143 BerVarray si_ctxcsn; /* ldapsync context */
146 int si_chkops; /* checkpointing info */
148 int si_numops; /* number of ops since last checkpoint */
149 int si_nopres; /* Skip present phase */
150 int si_usehint; /* use reload hint */
151 int si_active; /* True if there are active mods */
152 int si_dirty; /* True if the context is dirty, i.e changes
153 * have been made without updating the csn. */
154 time_t si_chklast; /* time of last checkpoint */
155 Avlnode *si_mods; /* entries being modified */
157 ldap_pvt_thread_rdwr_t si_csn_rwlock;
158 ldap_pvt_thread_mutex_t si_ops_mutex;
159 ldap_pvt_thread_mutex_t si_mods_mutex;
160 ldap_pvt_thread_mutex_t si_resp_mutex;
163 typedef struct opcookie {
165 syncmatches *smatches;
168 struct berval sdn; /* DN of entry, for deletes */
170 struct berval suuid; /* UUID of entry */
171 struct berval sctxcsn;
172 short osid; /* sid of op csn */
173 short rsid; /* sid of relay */
174 short sreference; /* Is the entry a reference? */
178 typedef struct fbase_cookie {
179 struct berval *fdn; /* DN of a modified entry, for scope testing */
180 syncops *fss; /* persistent search we're testing against */
181 int fbase; /* if TRUE we found the search base and it's still valid */
182 int fscope; /* if TRUE then fdn is within the psearch scope */
185 static AttributeName csn_anlist[3];
186 static AttributeName uuid_anlist[2];
188 /* Build a LDAPsync intermediate state control */
194 int entry_sync_state,
198 struct berval *cookie )
203 BerElementBuffer berbuf;
204 BerElement *ber = (BerElement *)&berbuf;
207 struct berval entryuuid_bv = BER_BVNULL;
209 ber_init2( ber, 0, LBER_USE_DER );
210 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
212 for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
213 AttributeDescription *desc = a->a_desc;
214 if ( desc == slap_schema.si_ad_entryUUID ) {
215 entryuuid_bv = a->a_nvals[0];
220 /* FIXME: what if entryuuid is NULL or empty ? */
222 if ( send_cookie && cookie ) {
223 ber_printf( ber, "{eOON}",
224 entry_sync_state, &entryuuid_bv, cookie );
226 ber_printf( ber, "{eON}",
227 entry_sync_state, &entryuuid_bv );
230 ret = ber_flatten2( ber, &bv, 0 );
232 cp = op->o_tmpalloc( sizeof( LDAPControl ) + bv.bv_len, op->o_tmpmemctx );
233 cp->ldctl_oid = LDAP_CONTROL_SYNC_STATE;
234 cp->ldctl_iscritical = (op->o_sync == SLAP_CONTROL_CRITICAL);
235 cp->ldctl_value.bv_val = (char *)&cp[1];
236 cp->ldctl_value.bv_len = bv.bv_len;
237 AC_MEMCPY( cp->ldctl_value.bv_val, bv.bv_val, bv.bv_len );
238 ctrls[num_ctrls] = cp;
243 Debug( LDAP_DEBUG_TRACE,
244 "slap_build_sync_ctrl: ber_flatten2 failed (%d)\n",
246 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
253 /* Build a LDAPsync final state control */
261 struct berval *cookie,
265 BerElementBuffer berbuf;
266 BerElement *ber = (BerElement *)&berbuf;
270 ber_init2( ber, NULL, LBER_USE_DER );
271 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
273 ber_printf( ber, "{" );
274 if ( send_cookie && cookie ) {
275 ber_printf( ber, "O", cookie );
277 if ( refreshDeletes == LDAP_SYNC_REFRESH_DELETES ) {
278 ber_printf( ber, "b", refreshDeletes );
280 ber_printf( ber, "N}" );
282 ret = ber_flatten2( ber, &bv, 0 );
284 cp = op->o_tmpalloc( sizeof( LDAPControl ) + bv.bv_len, op->o_tmpmemctx );
285 cp->ldctl_oid = LDAP_CONTROL_SYNC_DONE;
286 cp->ldctl_iscritical = (op->o_sync == SLAP_CONTROL_CRITICAL);
287 cp->ldctl_value.bv_val = (char *)&cp[1];
288 cp->ldctl_value.bv_len = bv.bv_len;
289 AC_MEMCPY( cp->ldctl_value.bv_val, bv.bv_val, bv.bv_len );
290 ctrls[num_ctrls] = cp;
296 Debug( LDAP_DEBUG_TRACE,
297 "syncprov_done_ctrl: ber_flatten2 failed (%d)\n",
299 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
311 struct berval *cookie,
316 BerElementBuffer berbuf;
317 BerElement *ber = (BerElement *)&berbuf;
318 struct berval rspdata;
322 ber_init2( ber, NULL, LBER_USE_DER );
323 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
327 case LDAP_TAG_SYNC_NEW_COOKIE:
328 ber_printf( ber, "tO", type, cookie );
330 case LDAP_TAG_SYNC_REFRESH_DELETE:
331 case LDAP_TAG_SYNC_REFRESH_PRESENT:
332 ber_printf( ber, "t{", type );
334 ber_printf( ber, "O", cookie );
336 if ( refreshDone == 0 ) {
337 ber_printf( ber, "b", refreshDone );
339 ber_printf( ber, "N}" );
341 case LDAP_TAG_SYNC_ID_SET:
342 ber_printf( ber, "t{", type );
344 ber_printf( ber, "O", cookie );
346 if ( refreshDeletes == 1 ) {
347 ber_printf( ber, "b", refreshDeletes );
349 ber_printf( ber, "[W]", syncUUIDs );
350 ber_printf( ber, "N}" );
353 Debug( LDAP_DEBUG_TRACE,
354 "syncprov_sendinfo: invalid syncinfo type (%d)\n",
360 ret = ber_flatten2( ber, &rspdata, 0 );
363 Debug( LDAP_DEBUG_TRACE,
364 "syncprov_sendinfo: ber_flatten2 failed (%d)\n",
366 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
370 rs->sr_rspoid = LDAP_SYNC_INFO;
371 rs->sr_rspdata = &rspdata;
372 send_ldap_intermediate( op, rs );
373 rs->sr_rspdata = NULL;
379 /* Find a modtarget in an AVL tree */
381 sp_avl_cmp( const void *c1, const void *c2 )
383 const modtarget *m1, *m2;
387 rc = m1->mt_dn.bv_len - m2->mt_dn.bv_len;
390 return ber_bvcmp( &m1->mt_dn, &m2->mt_dn );
393 /* syncprov_findbase:
394 * finds the true DN of the base of a search (with alias dereferencing) and
395 * checks to make sure the base entry doesn't get replaced with a different
396 * entry (e.g., swapping trees via ModDN, or retargeting an alias). If a
397 * change is detected, any persistent search on this base must be terminated /
399 * On the first call, we just save the DN and entryID. On subsequent calls
400 * we compare the DN and entryID with the saved values.
403 findbase_cb( Operation *op, SlapReply *rs )
405 slap_callback *sc = op->o_callback;
407 if ( rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS ) {
408 fbase_cookie *fc = sc->sc_private;
410 /* If no entryID, we're looking for the first time.
411 * Just store whatever we got.
413 if ( fc->fss->s_eid == NOID ) {
415 fc->fss->s_eid = rs->sr_entry->e_id;
416 ber_dupbv( &fc->fss->s_base, &rs->sr_entry->e_nname );
418 } else if ( rs->sr_entry->e_id == fc->fss->s_eid &&
419 dn_match( &rs->sr_entry->e_nname, &fc->fss->s_base )) {
421 /* OK, the DN is the same and the entryID is the same. */
425 if ( rs->sr_err != LDAP_SUCCESS ) {
426 Debug( LDAP_DEBUG_ANY, "findbase failed! %d\n", rs->sr_err,0,0 );
431 static Filter generic_filter = { LDAP_FILTER_PRESENT, { 0 }, NULL };
432 static struct berval generic_filterstr = BER_BVC("(objectclass=*)");
435 syncprov_findbase( Operation *op, fbase_cookie *fc )
437 /* Use basic parameters from syncrepl search, but use
438 * current op's threadctx / tmpmemctx
440 ldap_pvt_thread_mutex_lock( &fc->fss->s_mutex );
441 if ( fc->fss->s_flags & PS_FIND_BASE ) {
442 slap_callback cb = {0};
444 SlapReply frs = { REP_RESULT };
447 fc->fss->s_flags ^= PS_FIND_BASE;
448 ldap_pvt_thread_mutex_unlock( &fc->fss->s_mutex );
450 fop = *fc->fss->s_op;
452 fop.o_bd = fop.o_bd->bd_self;
453 fop.o_hdr = op->o_hdr;
454 fop.o_time = op->o_time;
455 fop.o_tincr = op->o_tincr;
456 fop.o_extra = op->o_extra;
458 cb.sc_response = findbase_cb;
461 fop.o_sync_mode = 0; /* turn off sync mode */
462 fop.o_managedsait = SLAP_CONTROL_CRITICAL;
463 fop.o_callback = &cb;
464 fop.o_tag = LDAP_REQ_SEARCH;
465 fop.ors_scope = LDAP_SCOPE_BASE;
466 fop.ors_limit = NULL;
468 fop.ors_tlimit = SLAP_NO_LIMIT;
469 fop.ors_attrs = slap_anlist_no_attrs;
470 fop.ors_attrsonly = 1;
471 fop.ors_filter = &generic_filter;
472 fop.ors_filterstr = generic_filterstr;
474 rc = fop.o_bd->be_search( &fop, &frs );
476 ldap_pvt_thread_mutex_unlock( &fc->fss->s_mutex );
480 /* After the first call, see if the fdn resides in the scope */
481 if ( fc->fbase == 1 ) {
482 switch ( fc->fss->s_op->ors_scope ) {
483 case LDAP_SCOPE_BASE:
484 fc->fscope = dn_match( fc->fdn, &fc->fss->s_base );
486 case LDAP_SCOPE_ONELEVEL: {
488 dnParent( fc->fdn, &pdn );
489 fc->fscope = dn_match( &pdn, &fc->fss->s_base );
491 case LDAP_SCOPE_SUBTREE:
492 fc->fscope = dnIsSuffix( fc->fdn, &fc->fss->s_base );
494 case LDAP_SCOPE_SUBORDINATE:
495 fc->fscope = dnIsSuffix( fc->fdn, &fc->fss->s_base ) &&
496 !dn_match( fc->fdn, &fc->fss->s_base );
504 /* If entryID has changed, then the base of this search has
505 * changed. Invalidate the psearch.
507 return LDAP_NO_SUCH_OBJECT;
511 * This function has three different purposes, but they all use a search
512 * that filters on entryCSN so they're combined here.
513 * 1: at startup time, after a contextCSN has been read from the database,
514 * we search for all entries with CSN >= contextCSN in case the contextCSN
515 * was not checkpointed at the previous shutdown.
517 * 2: when the current contextCSN is known and we have a sync cookie, we search
518 * for one entry with CSN = the cookie CSN. If not found, try <= cookie CSN.
519 * If an entry is found, the cookie CSN is valid, otherwise it is stale.
521 * 3: during a refresh phase, we search for all entries with CSN <= the cookie
522 * CSN, and generate Present records for them. We always collect this result
523 * in SyncID sets, even if there's only one match.
525 typedef enum find_csn_t {
532 findmax_cb( Operation *op, SlapReply *rs )
534 if ( rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS ) {
535 struct berval *maxcsn = op->o_callback->sc_private;
536 Attribute *a = attr_find( rs->sr_entry->e_attrs,
537 slap_schema.si_ad_entryCSN );
539 if ( a && ber_bvcmp( &a->a_vals[0], maxcsn ) > 0 &&
540 slap_parse_csn_sid( &a->a_vals[0] ) == slap_serverID ) {
541 maxcsn->bv_len = a->a_vals[0].bv_len;
542 strcpy( maxcsn->bv_val, a->a_vals[0].bv_val );
549 findcsn_cb( Operation *op, SlapReply *rs )
551 slap_callback *sc = op->o_callback;
553 /* We just want to know that at least one exists, so it's OK if
554 * we exceed the unchecked limit.
556 if ( rs->sr_err == LDAP_ADMINLIMIT_EXCEEDED ||
557 (rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS )) {
558 sc->sc_private = (void *)1;
563 /* Build a list of entryUUIDs for sending in a SyncID set */
567 typedef struct fpres_cookie {
574 findpres_cb( Operation *op, SlapReply *rs )
576 slap_callback *sc = op->o_callback;
577 fpres_cookie *pc = sc->sc_private;
579 int ret = SLAP_CB_CONTINUE;
581 switch ( rs->sr_type ) {
583 a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_entryUUID );
585 pc->uuids[pc->num].bv_val = pc->last;
586 AC_MEMCPY( pc->uuids[pc->num].bv_val, a->a_nvals[0].bv_val,
587 pc->uuids[pc->num].bv_len );
589 pc->last = pc->uuids[pc->num].bv_val;
590 pc->uuids[pc->num].bv_val = NULL;
593 if ( pc->num != SLAP_SYNCUUID_SET_SIZE )
599 ret = syncprov_sendinfo( op, rs, LDAP_TAG_SYNC_ID_SET, NULL,
601 pc->uuids[pc->num].bv_val = pc->last;
603 pc->last = pc->uuids[0].bv_val;
613 syncprov_findcsn( Operation *op, find_csn_t mode, struct berval *csn )
615 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
616 syncprov_info_t *si = on->on_bi.bi_private;
618 slap_callback cb = {0};
620 SlapReply frs = { REP_RESULT };
621 char buf[LDAP_PVT_CSNSTR_BUFSIZE + STRLENOF("(entryCSN<=)")];
622 char cbuf[LDAP_PVT_CSNSTR_BUFSIZE];
623 struct berval maxcsn;
625 AttributeAssertion eq = ATTRIBUTEASSERTION_INIT;
626 fpres_cookie pcookie;
627 sync_control *srs = NULL;
628 struct slap_limits_set fc_limits;
629 int i, rc = LDAP_SUCCESS, findcsn_retry = 1;
632 if ( mode != FIND_MAXCSN ) {
633 srs = op->o_controls[slap_cids.sc_LDAPsync];
637 fop.o_sync_mode &= SLAP_CONTROL_MASK; /* turn off sync_mode */
638 /* We want pure entries, not referrals */
639 fop.o_managedsait = SLAP_CONTROL_CRITICAL;
642 cf.f_av_desc = slap_schema.si_ad_entryCSN;
643 BER_BVZERO( &cf.f_av_value );
646 fop.o_callback = &cb;
647 fop.ors_limit = NULL;
648 fop.ors_tlimit = SLAP_NO_LIMIT;
649 fop.ors_filter = &cf;
650 fop.ors_filterstr.bv_val = buf;
655 cf.f_choice = LDAP_FILTER_GE;
656 /* If there are multiple CSNs, use the one with our serverID */
657 for ( i=0; i<si->si_numcsns; i++) {
658 if ( slap_serverID == si->si_sids[i] ) {
663 if ( i == si->si_numcsns ) {
664 /* No match: this is multimaster, and none of the content in the DB
665 * originated locally. Treat like no CSN.
667 return LDAP_NO_SUCH_OBJECT;
669 cf.f_av_value = si->si_ctxcsn[maxid];
670 fop.ors_filterstr.bv_len = snprintf( buf, sizeof( buf ),
671 "(entryCSN>=%s)", cf.f_av_value.bv_val );
672 if ( fop.ors_filterstr.bv_len >= sizeof( buf ) ) {
675 fop.ors_attrsonly = 0;
676 fop.ors_attrs = csn_anlist;
677 fop.ors_slimit = SLAP_NO_LIMIT;
678 cb.sc_private = &maxcsn;
679 cb.sc_response = findmax_cb;
680 strcpy( cbuf, cf.f_av_value.bv_val );
681 maxcsn.bv_val = cbuf;
682 maxcsn.bv_len = cf.f_av_value.bv_len;
685 if ( BER_BVISEMPTY( &cf.f_av_value )) {
686 cf.f_av_value = *csn;
688 fop.o_dn = op->o_bd->be_rootdn;
689 fop.o_ndn = op->o_bd->be_rootndn;
690 fop.o_req_dn = op->o_bd->be_suffix[0];
691 fop.o_req_ndn = op->o_bd->be_nsuffix[0];
692 /* Look for exact match the first time */
693 if ( findcsn_retry ) {
694 cf.f_choice = LDAP_FILTER_EQUALITY;
695 fop.ors_filterstr.bv_len = snprintf( buf, sizeof( buf ),
696 "(entryCSN=%s)", cf.f_av_value.bv_val );
697 /* On retry, look for <= */
699 cf.f_choice = LDAP_FILTER_LE;
700 fop.ors_limit = &fc_limits;
701 memset( &fc_limits, 0, sizeof( fc_limits ));
702 fc_limits.lms_s_unchecked = 1;
703 fop.ors_filterstr.bv_len = snprintf( buf, sizeof( buf ),
704 "(entryCSN<=%s)", cf.f_av_value.bv_val );
706 if ( fop.ors_filterstr.bv_len >= sizeof( buf ) ) {
709 fop.ors_attrsonly = 1;
710 fop.ors_attrs = slap_anlist_no_attrs;
712 cb.sc_private = NULL;
713 cb.sc_response = findcsn_cb;
716 fop.ors_filter = op->ors_filter;
717 fop.ors_filterstr = op->ors_filterstr;
718 fop.ors_attrsonly = 0;
719 fop.ors_attrs = uuid_anlist;
720 fop.ors_slimit = SLAP_NO_LIMIT;
721 cb.sc_private = &pcookie;
722 cb.sc_response = findpres_cb;
725 /* preallocate storage for a full set */
726 pcookie.uuids = op->o_tmpalloc( (SLAP_SYNCUUID_SET_SIZE+1) *
727 sizeof(struct berval) + SLAP_SYNCUUID_SET_SIZE * UUID_LEN,
729 pcookie.last = (char *)(pcookie.uuids + SLAP_SYNCUUID_SET_SIZE+1);
730 pcookie.uuids[0].bv_val = pcookie.last;
731 pcookie.uuids[0].bv_len = UUID_LEN;
732 for (i=1; i<SLAP_SYNCUUID_SET_SIZE; i++) {
733 pcookie.uuids[i].bv_val = pcookie.uuids[i-1].bv_val + UUID_LEN;
734 pcookie.uuids[i].bv_len = UUID_LEN;
739 fop.o_bd->bd_info = (BackendInfo *)on->on_info;
740 fop.o_bd->be_search( &fop, &frs );
741 fop.o_bd->bd_info = (BackendInfo *)on;
745 if ( ber_bvcmp( &si->si_ctxcsn[maxid], &maxcsn )) {
747 Syntax *syn = slap_schema.si_ad_contextCSN->ad_type->sat_syntax;
748 assert( !syn->ssyn_validate( syn, &maxcsn ));
750 ber_bvreplace( &si->si_ctxcsn[maxid], &maxcsn );
751 si->si_numops++; /* ensure a checkpoint */
755 /* If matching CSN was not found, invalidate the context. */
756 if ( !cb.sc_private ) {
757 /* If we didn't find an exact match, then try for <= */
758 if ( findcsn_retry ) {
760 rs_reinit( &frs, REP_RESULT );
763 rc = LDAP_NO_SUCH_OBJECT;
767 op->o_tmpfree( pcookie.uuids, op->o_tmpmemctx );
774 static void free_resinfo( syncres *sr )
778 ldap_pvt_thread_mutex_lock( &sr->s_info->ri_mutex );
779 for (st = &sr->s_info->ri_list; *st; st = &(*st)->s_rilist) {
785 if ( !sr->s_info->ri_list )
787 ldap_pvt_thread_mutex_unlock( &sr->s_info->ri_mutex );
789 ldap_pvt_thread_mutex_destroy( &sr->s_info->ri_mutex );
790 if ( sr->s_info->ri_e )
791 entry_free( sr->s_info->ri_e );
792 if ( !BER_BVISNULL( &sr->s_info->ri_cookie ))
793 ch_free( sr->s_info->ri_cookie.bv_val );
794 ch_free( sr->s_info );
802 syncprov_free_syncop( syncops *so, int flags )
804 syncres *sr, *srnext;
805 GroupAssertion *ga, *gnext;
807 if ( flags & FS_LOCK )
808 ldap_pvt_thread_mutex_lock( &so->s_mutex );
809 /* already being freed, or still in use */
810 if ( !so->s_inuse || --so->s_inuse > 0 ) {
811 if ( flags & FS_LOCK )
812 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
815 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
816 if (( flags & FS_UNLINK ) && so->s_si ) {
818 ldap_pvt_thread_mutex_lock( &so->s_si->si_ops_mutex );
819 for ( sop = &so->s_si->si_ops; *sop; sop = &(*sop)->s_next ) {
825 ldap_pvt_thread_mutex_unlock( &so->s_si->si_ops_mutex );
827 if ( so->s_flags & PS_IS_DETACHED ) {
828 filter_free( so->s_op->ors_filter );
829 for ( ga = so->s_op->o_groups; ga; ga=gnext ) {
835 ch_free( so->s_base.bv_val );
836 for ( sr=so->s_res; sr; sr=srnext ) {
841 ldap_pvt_thread_mutex_destroy( &so->s_mutex );
846 /* Send a persistent search response */
848 syncprov_sendresp( Operation *op, resinfo *ri, syncops *so, int mode )
850 SlapReply rs = { REP_SEARCH };
851 struct berval cookie, csns[2];
853 Attribute a_uuid = {0};
855 if ( so->s_op->o_abandon )
856 return SLAPD_ABANDON;
858 rs.sr_ctrls = op->o_tmpalloc( sizeof(LDAPControl *)*2, op->o_tmpmemctx );
859 rs.sr_ctrls[1] = NULL;
860 rs.sr_flags = REP_CTRLS_MUSTBEFREED;
861 csns[0] = ri->ri_csn;
862 BER_BVZERO( &csns[1] );
863 slap_compose_sync_cookie( op, &cookie, csns, so->s_rid, slap_serverID ? slap_serverID : -1 );
866 if ( so->s_sid > 0 ) {
867 Debug( LDAP_DEBUG_SYNC, "syncprov_sendresp: to=%03x, cookie=%s\n",
868 so->s_sid, cookie.bv_val, 0 );
870 Debug( LDAP_DEBUG_SYNC, "syncprov_sendresp: cookie=%s\n",
871 cookie.bv_val, 0, 0 );
875 e_uuid.e_attrs = &a_uuid;
876 a_uuid.a_desc = slap_schema.si_ad_entryUUID;
877 a_uuid.a_nvals = &ri->ri_uuid;
878 rs.sr_err = syncprov_state_ctrl( op, &rs, &e_uuid,
879 mode, rs.sr_ctrls, 0, 1, &cookie );
880 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
882 rs.sr_entry = &e_uuid;
883 if ( mode == LDAP_SYNC_ADD || mode == LDAP_SYNC_MODIFY ) {
885 e_uuid.e_private = NULL;
890 if ( ri->ri_isref && so->s_op->o_managedsait <= SLAP_CONTROL_IGNORED ) {
891 rs.sr_ref = get_entry_referrals( op, rs.sr_entry );
892 rs.sr_err = send_search_reference( op, &rs );
893 ber_bvarray_free( rs.sr_ref );
897 case LDAP_SYNC_MODIFY:
898 rs.sr_attrs = op->ors_attrs;
899 rs.sr_err = send_search_entry( op, &rs );
901 case LDAP_SYNC_DELETE:
902 e_uuid.e_attrs = NULL;
903 e_uuid.e_name = ri->ri_dn;
904 e_uuid.e_nname = ri->ri_ndn;
905 if ( ri->ri_isref && so->s_op->o_managedsait <= SLAP_CONTROL_IGNORED ) {
906 struct berval bv = BER_BVNULL;
908 rs.sr_err = send_search_reference( op, &rs );
910 rs.sr_err = send_search_entry( op, &rs );
920 syncprov_qstart( syncops *so );
922 /* Play back queued responses */
924 syncprov_qplay( Operation *op, syncops *so )
930 ldap_pvt_thread_mutex_lock( &so->s_mutex );
932 /* Exit loop with mutex held */
935 so->s_res = sr->s_next;
937 so->s_restail = NULL;
938 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
940 if ( !so->s_op->o_abandon ) {
942 if ( sr->s_mode == LDAP_SYNC_NEW_COOKIE ) {
943 SlapReply rs = { REP_INTERMEDIATE };
945 rc = syncprov_sendinfo( op, &rs, LDAP_TAG_SYNC_NEW_COOKIE,
946 &sr->s_info->ri_cookie, 0, NULL, 0 );
948 rc = syncprov_sendresp( op, sr->s_info, so, sr->s_mode );
955 if ( so->s_op->o_abandon )
958 /* Exit loop with mutex held */
959 ldap_pvt_thread_mutex_lock( &so->s_mutex );
964 /* We now only send one change at a time, to prevent one
965 * psearch from hogging all the CPU. Resubmit this task if
966 * there are more responses queued and no errors occurred.
969 if ( rc == 0 && so->s_res ) {
970 syncprov_qstart( so );
976 /* task for playing back queued responses */
978 syncprov_qtask( void *ctx, void *arg )
981 OperationBuffer opbuf;
988 op->o_hdr = &opbuf.ob_hdr;
989 op->o_controls = opbuf.ob_controls;
990 memset( op->o_controls, 0, sizeof(opbuf.ob_controls) );
991 op->o_sync = SLAP_CONTROL_IGNORED;
993 *op->o_hdr = *so->s_op->o_hdr;
995 op->o_tmpmemctx = slap_sl_mem_create(SLAP_SLAB_SIZE, SLAP_SLAB_STACK, ctx, 1);
996 op->o_tmpmfuncs = &slap_sl_mfuncs;
997 op->o_threadctx = ctx;
999 /* syncprov_qplay expects a fake db */
1000 be = *so->s_op->o_bd;
1001 be.be_flags |= SLAP_DBFLAG_OVERLAY;
1003 LDAP_SLIST_FIRST(&op->o_extra) = NULL;
1004 op->o_callback = NULL;
1006 rc = syncprov_qplay( op, so );
1008 /* if an error occurred, or no responses left, task is no longer queued */
1009 if ( !rc && !so->s_res )
1012 /* decrement use count... */
1013 if ( !syncprov_free_syncop( so, FS_UNLINK )) {
1015 /* if we didn't unlink, and task is no longer queued, clear flag */
1016 so->s_flags ^= PS_TASK_QUEUED;
1017 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
1023 /* Start the task to play back queued psearch responses */
1025 syncprov_qstart( syncops *so )
1027 so->s_flags |= PS_TASK_QUEUED;
1029 ldap_pvt_thread_pool_submit2( &connection_pool,
1030 syncprov_qtask, so, &so->s_pool_cookie );
1033 /* Queue a persistent search response */
1035 syncprov_qresp( opcookie *opc, syncops *so, int mode )
1040 struct berval csn = opc->sctxcsn;
1042 sr = ch_malloc( sizeof( syncres ));
1045 if ( !opc->ssres.s_info ) {
1047 srsize = sizeof( resinfo );
1049 srsize += csn.bv_len + 1;
1053 ri = ch_malloc( srsize );
1054 ri->ri_dn = opc->se->e_name;
1055 ri->ri_ndn = opc->se->e_nname;
1056 a = attr_find( opc->se->e_attrs, slap_schema.si_ad_entryUUID );
1058 ri->ri_uuid = a->a_nvals[0];
1060 ri->ri_uuid.bv_len = 0;
1062 ri->ri_csn.bv_val = (char *)(ri + 1);
1063 ri->ri_csn.bv_len = csn.bv_len;
1064 memcpy( ri->ri_csn.bv_val, csn.bv_val, csn.bv_len );
1065 ri->ri_csn.bv_val[csn.bv_len] = '\0';
1067 ri->ri_csn.bv_val = NULL;
1070 srsize += opc->suuid.bv_len +
1071 opc->sdn.bv_len + 1 + opc->sndn.bv_len + 1;
1072 ri = ch_malloc( srsize );
1073 ri->ri_dn.bv_val = (char *)(ri + 1);
1074 ri->ri_dn.bv_len = opc->sdn.bv_len;
1075 ri->ri_ndn.bv_val = lutil_strcopy( ri->ri_dn.bv_val,
1076 opc->sdn.bv_val ) + 1;
1077 ri->ri_ndn.bv_len = opc->sndn.bv_len;
1078 ri->ri_uuid.bv_val = lutil_strcopy( ri->ri_ndn.bv_val,
1079 opc->sndn.bv_val ) + 1;
1080 ri->ri_uuid.bv_len = opc->suuid.bv_len;
1081 AC_MEMCPY( ri->ri_uuid.bv_val, opc->suuid.bv_val, opc->suuid.bv_len );
1083 ri->ri_csn.bv_val = ri->ri_uuid.bv_val + ri->ri_uuid.bv_len;
1084 memcpy( ri->ri_csn.bv_val, csn.bv_val, csn.bv_len );
1085 ri->ri_csn.bv_val[csn.bv_len] = '\0';
1087 ri->ri_csn.bv_val = NULL;
1090 ri->ri_list = &opc->ssres;
1092 ri->ri_csn.bv_len = csn.bv_len;
1093 ri->ri_isref = opc->sreference;
1094 BER_BVZERO( &ri->ri_cookie );
1095 ldap_pvt_thread_mutex_init( &ri->ri_mutex );
1097 opc->ssres.s_info = ri;
1099 ri = opc->ssres.s_info;
1101 ldap_pvt_thread_mutex_lock( &ri->ri_mutex );
1102 sr->s_rilist = ri->ri_list;
1104 if ( mode == LDAP_SYNC_NEW_COOKIE && BER_BVISNULL( &ri->ri_cookie )) {
1105 syncprov_info_t *si = opc->son->on_bi.bi_private;
1107 slap_compose_sync_cookie( NULL, &ri->ri_cookie, si->si_ctxcsn,
1108 so->s_rid, slap_serverID ? slap_serverID : -1);
1110 ldap_pvt_thread_mutex_unlock( &ri->ri_mutex );
1112 ldap_pvt_thread_mutex_lock( &so->s_mutex );
1116 so->s_restail->s_next = sr;
1120 /* If the base of the psearch was modified, check it next time round */
1121 if ( so->s_flags & PS_WROTE_BASE ) {
1122 so->s_flags ^= PS_WROTE_BASE;
1123 so->s_flags |= PS_FIND_BASE;
1125 if (( so->s_flags & (PS_IS_DETACHED|PS_TASK_QUEUED)) == PS_IS_DETACHED ) {
1126 syncprov_qstart( so );
1128 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
1129 return LDAP_SUCCESS;
1133 syncprov_drop_psearch( syncops *so, int lock )
1135 if ( so->s_flags & PS_IS_DETACHED ) {
1137 ldap_pvt_thread_mutex_lock( &so->s_op->o_conn->c_mutex );
1138 so->s_op->o_conn->c_n_ops_executing--;
1139 so->s_op->o_conn->c_n_ops_completed++;
1140 LDAP_STAILQ_REMOVE( &so->s_op->o_conn->c_ops, so->s_op, Operation,
1143 ldap_pvt_thread_mutex_unlock( &so->s_op->o_conn->c_mutex );
1145 return syncprov_free_syncop( so, FS_LOCK );
1149 syncprov_ab_cleanup( Operation *op, SlapReply *rs )
1151 slap_callback *sc = op->o_callback;
1152 op->o_callback = sc->sc_next;
1153 syncprov_drop_psearch( sc->sc_private, 0 );
1154 op->o_tmpfree( sc, op->o_tmpmemctx );
1159 syncprov_op_abandon( Operation *op, SlapReply *rs )
1161 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1162 syncprov_info_t *si = on->on_bi.bi_private;
1165 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1166 for ( sop=&si->si_ops; (so = *sop); sop = &(*sop)->s_next ) {
1167 if ( so->s_op->o_connid == op->o_connid &&
1168 so->s_op->o_msgid == op->orn_msgid ) {
1169 so->s_op->o_abandon = 1;
1174 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1176 /* Is this really a Cancel exop? */
1177 if ( op->o_tag != LDAP_REQ_ABANDON ) {
1178 so->s_op->o_cancel = SLAP_CANCEL_ACK;
1179 rs->sr_err = LDAP_CANCELLED;
1180 send_ldap_result( so->s_op, rs );
1181 if ( so->s_flags & PS_IS_DETACHED ) {
1183 cb = op->o_tmpcalloc( 1, sizeof(slap_callback), op->o_tmpmemctx );
1184 cb->sc_cleanup = syncprov_ab_cleanup;
1185 cb->sc_next = op->o_callback;
1186 cb->sc_private = so;
1187 op->o_callback = cb;
1188 return SLAP_CB_CONTINUE;
1191 syncprov_drop_psearch( so, 0 );
1193 return SLAP_CB_CONTINUE;
1196 /* Find which persistent searches are affected by this operation */
1198 syncprov_matchops( Operation *op, opcookie *opc, int saveit )
1200 slap_overinst *on = opc->son;
1201 syncprov_info_t *si = on->on_bi.bi_private;
1208 struct berval newdn;
1210 BackendDB *b0 = op->o_bd, db;
1212 fc.fdn = &op->o_req_ndn;
1213 /* compute new DN */
1214 if ( op->o_tag == LDAP_REQ_MODRDN && !saveit ) {
1216 if ( op->orr_nnewSup ) pdn = *op->orr_nnewSup;
1217 else dnParent( fc.fdn, &pdn );
1218 build_new_dn( &newdn, &pdn, &op->orr_nnewrdn, op->o_tmpmemctx );
1222 if ( op->o_tag != LDAP_REQ_ADD ) {
1223 if ( !SLAP_ISOVERLAY( op->o_bd )) {
1227 rc = overlay_entry_get_ov( op, fc.fdn, NULL, NULL, 0, &e, on );
1228 /* If we're sending responses now, make a copy and unlock the DB */
1229 if ( e && !saveit ) {
1231 opc->se = entry_dup( e );
1232 overlay_entry_release_ov( op, e, 0, on );
1243 opc->se = entry_dup( e );
1248 if ( saveit || op->o_tag == LDAP_REQ_ADD ) {
1249 ber_dupbv_x( &opc->sdn, &e->e_name, op->o_tmpmemctx );
1250 ber_dupbv_x( &opc->sndn, &e->e_nname, op->o_tmpmemctx );
1251 opc->sreference = is_entry_referral( e );
1252 a = attr_find( e->e_attrs, slap_schema.si_ad_entryUUID );
1254 ber_dupbv_x( &opc->suuid, &a->a_nvals[0], op->o_tmpmemctx );
1255 } else if ( op->o_tag == LDAP_REQ_MODRDN && !saveit ) {
1256 op->o_tmpfree( opc->sndn.bv_val, op->o_tmpmemctx );
1257 op->o_tmpfree( opc->sdn.bv_val, op->o_tmpmemctx );
1258 ber_dupbv_x( &opc->sdn, &e->e_name, op->o_tmpmemctx );
1259 ber_dupbv_x( &opc->sndn, &e->e_nname, op->o_tmpmemctx );
1262 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1263 for (pss = &si->si_ops; *pss; pss = gonext ? &(*pss)->s_next : pss)
1269 syncops *snext, *ss = *pss;
1272 if ( ss->s_op->o_abandon )
1275 /* Don't send ops back to the originator */
1276 if ( opc->osid > 0 && opc->osid == ss->s_sid ) {
1277 Debug( LDAP_DEBUG_SYNC, "syncprov_matchops: skipping original sid %03x\n",
1282 /* Don't send ops back to the messenger */
1283 if ( opc->rsid > 0 && opc->rsid == ss->s_sid ) {
1284 Debug( LDAP_DEBUG_SYNC, "syncprov_matchops: skipping relayed sid %03x\n",
1294 /* If the base of the search is missing, signal a refresh */
1295 rc = syncprov_findbase( op, &fc );
1296 if ( rc != LDAP_SUCCESS ) {
1297 SlapReply rs = {REP_RESULT};
1298 send_ldap_error( ss->s_op, &rs, LDAP_SYNC_REFRESH_REQUIRED,
1299 "search base has changed" );
1301 if ( syncprov_drop_psearch( ss, 1 ) )
1307 /* If we're sending results now, look for this op in old matches */
1311 /* Did we modify the search base? */
1312 if ( dn_match( &op->o_req_ndn, &ss->s_base )) {
1313 ldap_pvt_thread_mutex_lock( &ss->s_mutex );
1314 ss->s_flags |= PS_WROTE_BASE;
1315 ldap_pvt_thread_mutex_unlock( &ss->s_mutex );
1318 for ( sm=opc->smatches, old=(syncmatches *)&opc->smatches; sm;
1319 old=sm, sm=sm->sm_next ) {
1320 if ( sm->sm_op == ss ) {
1322 old->sm_next = sm->sm_next;
1323 op->o_tmpfree( sm, op->o_tmpmemctx );
1330 ldap_pvt_thread_mutex_lock( &ss->s_mutex );
1333 oh.oh_conn = ss->s_op->o_conn;
1334 oh.oh_connid = ss->s_op->o_connid;
1335 op2.o_bd = op->o_bd->bd_self;
1337 op2.o_extra = op->o_extra;
1338 op2.o_callback = NULL;
1339 if (ss->s_flags & PS_FIX_FILTER) {
1340 /* Skip the AND/GE clause that we stuck on in front. We
1341 would lose deletes/mods that happen during the refresh
1342 phase otherwise (ITS#6555) */
1343 op2.ors_filter = ss->s_op->ors_filter->f_and->f_next;
1345 rc = test_filter( &op2, e, op2.ors_filter );
1346 ldap_pvt_thread_mutex_unlock( &ss->s_mutex );
1349 Debug( LDAP_DEBUG_TRACE, "syncprov_matchops: sid %03x fscope %d rc %d\n",
1350 ss->s_sid, fc.fscope, rc );
1352 /* check if current o_req_dn is in scope and matches filter */
1353 if ( fc.fscope && rc == LDAP_COMPARE_TRUE ) {
1355 sm = op->o_tmpalloc( sizeof(syncmatches), op->o_tmpmemctx );
1356 sm->sm_next = opc->smatches;
1358 ldap_pvt_thread_mutex_lock( &ss->s_mutex );
1360 ldap_pvt_thread_mutex_unlock( &ss->s_mutex );
1363 /* if found send UPDATE else send ADD */
1364 syncprov_qresp( opc, ss,
1365 found ? LDAP_SYNC_MODIFY : LDAP_SYNC_ADD );
1367 } else if ( !saveit && found ) {
1369 syncprov_qresp( opc, ss, LDAP_SYNC_DELETE );
1370 } else if ( !saveit ) {
1371 syncprov_qresp( opc, ss, LDAP_SYNC_NEW_COOKIE );
1373 if ( !saveit && found ) {
1374 /* Decrement s_inuse, was incremented when called
1375 * with saveit == TRUE
1378 if ( syncprov_free_syncop( ss, FS_LOCK ) ) {
1384 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1386 if ( op->o_tag != LDAP_REQ_ADD && e ) {
1387 if ( !SLAP_ISOVERLAY( op->o_bd )) {
1391 overlay_entry_release_ov( op, e, 0, on );
1395 if ( opc->ssres.s_info )
1396 free_resinfo( &opc->ssres );
1398 entry_free( opc->se );
1401 op->o_tmpfree( fc.fdn->bv_val, op->o_tmpmemctx );
1407 syncprov_op_cleanup( Operation *op, SlapReply *rs )
1409 slap_callback *cb = op->o_callback;
1410 opcookie *opc = cb->sc_private;
1411 slap_overinst *on = opc->son;
1412 syncprov_info_t *si = on->on_bi.bi_private;
1413 syncmatches *sm, *snext;
1416 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1417 if ( si->si_active )
1419 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1421 for (sm = opc->smatches; sm; sm=snext) {
1422 snext = sm->sm_next;
1423 syncprov_free_syncop( sm->sm_op, FS_LOCK|FS_UNLINK );
1424 op->o_tmpfree( sm, op->o_tmpmemctx );
1427 /* Remove op from lock table */
1430 modinst *mi = (modinst *)(opc+1), **m2;
1431 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
1432 for (m2 = &mt->mt_mods; ; m2 = &(*m2)->mi_next) {
1435 if ( mt->mt_tail == mi )
1436 mt->mt_tail = ( m2 == &mt->mt_mods ) ? NULL : (modinst *)m2;
1440 /* If there are more, promote the next one */
1441 if ( mt->mt_mods ) {
1442 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1444 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1445 ldap_pvt_thread_mutex_lock( &si->si_mods_mutex );
1446 avl_delete( &si->si_mods, mt, sp_avl_cmp );
1447 ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
1448 ldap_pvt_thread_mutex_destroy( &mt->mt_mutex );
1449 ch_free( mt->mt_dn.bv_val );
1453 if ( !BER_BVISNULL( &opc->suuid ))
1454 op->o_tmpfree( opc->suuid.bv_val, op->o_tmpmemctx );
1455 if ( !BER_BVISNULL( &opc->sndn ))
1456 op->o_tmpfree( opc->sndn.bv_val, op->o_tmpmemctx );
1457 if ( !BER_BVISNULL( &opc->sdn ))
1458 op->o_tmpfree( opc->sdn.bv_val, op->o_tmpmemctx );
1459 op->o_callback = cb->sc_next;
1460 op->o_tmpfree(cb, op->o_tmpmemctx);
1466 syncprov_checkpoint( Operation *op, slap_overinst *on )
1468 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
1471 SlapReply rsm = {REP_RESULT};
1472 slap_callback cb = {0};
1477 Syntax *syn = slap_schema.si_ad_contextCSN->ad_type->sat_syntax;
1480 for ( i=0; i<si->si_numcsns; i++ ) {
1481 assert( !syn->ssyn_validate( syn, si->si_ctxcsn+i ));
1484 mod.sml_numvals = si->si_numcsns;
1485 mod.sml_values = si->si_ctxcsn;
1486 mod.sml_nvalues = NULL;
1487 mod.sml_desc = slap_schema.si_ad_contextCSN;
1488 mod.sml_op = LDAP_MOD_REPLACE;
1489 mod.sml_flags = SLAP_MOD_INTERNAL;
1490 mod.sml_next = NULL;
1492 cb.sc_response = slap_null_cb;
1494 opm.o_tag = LDAP_REQ_MODIFY;
1495 opm.o_callback = &cb;
1496 opm.orm_modlist = &mod;
1497 opm.orm_no_opattrs = 1;
1498 if ( SLAP_GLUE_SUBORDINATE( op->o_bd )) {
1499 be = *on->on_info->oi_origdb;
1502 opm.o_req_dn = si->si_contextdn;
1503 opm.o_req_ndn = si->si_contextdn;
1504 bi = opm.o_bd->bd_info;
1505 opm.o_bd->bd_info = on->on_info->oi_orig;
1506 opm.o_managedsait = SLAP_CONTROL_NONCRITICAL;
1507 opm.o_no_schema_check = 1;
1508 opm.o_dont_replicate = 1;
1510 opm.o_bd->be_modify( &opm, &rsm );
1512 if ( rsm.sr_err == LDAP_NO_SUCH_OBJECT &&
1513 SLAP_SYNC_SUBENTRY( opm.o_bd )) {
1515 char txtbuf[SLAP_TEXT_BUFLEN];
1516 size_t textlen = sizeof txtbuf;
1517 Entry *e = slap_create_context_csn_entry( opm.o_bd, NULL );
1518 rs_reinit( &rsm, REP_RESULT );
1519 slap_mods2entry( &mod, &e, 0, 1, &text, txtbuf, textlen);
1521 opm.o_bd->be_add( &opm, &rsm );
1522 if ( e == opm.ora_e )
1523 be_entry_release_w( &opm, opm.ora_e );
1525 opm.o_bd->bd_info = bi;
1527 if ( mod.sml_next != NULL ) {
1528 slap_mods_free( mod.sml_next, 1 );
1531 for ( i=0; i<si->si_numcsns; i++ ) {
1532 assert( !syn->ssyn_validate( syn, si->si_ctxcsn+i ));
1538 syncprov_add_slog( Operation *op )
1540 opcookie *opc = op->o_callback->sc_private;
1541 slap_overinst *on = opc->son;
1542 syncprov_info_t *si = on->on_bi.bi_private;
1548 if ( BER_BVISEMPTY( &op->o_csn ) ) {
1549 /* During the syncrepl refresh phase we can receive operations
1550 * without a csn. We cannot reliably determine the consumers
1551 * state with respect to such operations, so we ignore them and
1552 * wipe out anything in the log if we see them.
1554 ldap_pvt_thread_mutex_lock( &sl->sl_mutex );
1555 while ( se = sl->sl_head ) {
1556 sl->sl_head = se->se_next;
1561 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1565 /* Allocate a record. UUIDs are not NUL-terminated. */
1566 se = ch_malloc( sizeof( slog_entry ) + opc->suuid.bv_len +
1567 op->o_csn.bv_len + 1 );
1569 se->se_tag = op->o_tag;
1571 se->se_uuid.bv_val = (char *)(&se[1]);
1572 AC_MEMCPY( se->se_uuid.bv_val, opc->suuid.bv_val, opc->suuid.bv_len );
1573 se->se_uuid.bv_len = opc->suuid.bv_len;
1575 se->se_csn.bv_val = se->se_uuid.bv_val + opc->suuid.bv_len;
1576 AC_MEMCPY( se->se_csn.bv_val, op->o_csn.bv_val, op->o_csn.bv_len );
1577 se->se_csn.bv_val[op->o_csn.bv_len] = '\0';
1578 se->se_csn.bv_len = op->o_csn.bv_len;
1579 se->se_sid = slap_parse_csn_sid( &se->se_csn );
1581 ldap_pvt_thread_mutex_lock( &sl->sl_mutex );
1582 if ( sl->sl_head ) {
1583 /* Keep the list in csn order. */
1584 if ( ber_bvcmp( &sl->sl_tail->se_csn, &se->se_csn ) <= 0 ) {
1585 sl->sl_tail->se_next = se;
1590 for ( sep = &sl->sl_head; *sep; sep = &(*sep)->se_next ) {
1591 if ( ber_bvcmp( &se->se_csn, &(*sep)->se_csn ) < 0 ) {
1601 if ( !sl->sl_mincsn ) {
1603 sl->sl_mincsn = ch_malloc( 2*sizeof( struct berval ));
1604 sl->sl_sids = ch_malloc( sizeof( int ));
1605 sl->sl_sids[0] = se->se_sid;
1606 ber_dupbv( sl->sl_mincsn, &se->se_csn );
1607 BER_BVZERO( &sl->sl_mincsn[1] );
1611 while ( sl->sl_num > sl->sl_size ) {
1614 sl->sl_head = se->se_next;
1615 for ( i=0; i<sl->sl_numcsns; i++ )
1616 if ( sl->sl_sids[i] >= se->se_sid )
1618 if ( i == sl->sl_numcsns || sl->sl_sids[i] != se->se_sid ) {
1619 slap_insert_csn_sids( (struct sync_cookie *)sl,
1620 i, se->se_sid, &se->se_csn );
1622 ber_bvreplace( &sl->sl_mincsn[i], &se->se_csn );
1627 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1631 /* Just set a flag if we found the matching entry */
1633 playlog_cb( Operation *op, SlapReply *rs )
1635 if ( rs->sr_type == REP_SEARCH ) {
1636 op->o_callback->sc_private = (void *)1;
1641 /* enter with sl->sl_mutex locked, release before returning */
1643 syncprov_playlog( Operation *op, SlapReply *rs, sessionlog *sl,
1644 sync_control *srs, BerVarray ctxcsn, int numcsns, int *sids )
1646 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1648 int i, j, ndel, num, nmods, mmods;
1649 char cbuf[LDAP_PVT_CSNSTR_BUFSIZE];
1651 struct berval delcsn[2];
1653 if ( !sl->sl_num ) {
1654 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1662 uuids = op->o_tmpalloc( (num+1) * sizeof( struct berval ) +
1663 num * UUID_LEN, op->o_tmpmemctx );
1664 uuids[0].bv_val = (char *)(uuids + num + 1);
1666 delcsn[0].bv_len = 0;
1667 delcsn[0].bv_val = cbuf;
1668 BER_BVZERO(&delcsn[1]);
1670 /* Make a copy of the relevant UUIDs. Put the Deletes up front
1671 * and everything else at the end. Do this first so we can
1672 * unlock the list mutex.
1674 Debug( LDAP_DEBUG_SYNC, "srs csn %s\n",
1675 srs->sr_state.ctxcsn[0].bv_val, 0, 0 );
1676 for ( se=sl->sl_head; se; se=se->se_next ) {
1678 Debug( LDAP_DEBUG_SYNC, "log csn %s\n", se->se_csn.bv_val, 0, 0 );
1680 for ( k=0; k<srs->sr_state.numcsns; k++ ) {
1681 if ( se->se_sid == srs->sr_state.sids[k] ) {
1682 ndel = ber_bvcmp( &se->se_csn, &srs->sr_state.ctxcsn[k] );
1687 Debug( LDAP_DEBUG_SYNC, "cmp %d, too old\n", ndel, 0, 0 );
1691 for ( k=0; k<numcsns; k++ ) {
1692 if ( se->se_sid == sids[k] ) {
1693 ndel = ber_bvcmp( &se->se_csn, &ctxcsn[k] );
1698 Debug( LDAP_DEBUG_SYNC, "cmp %d, too new\n", ndel, 0, 0 );
1701 if ( se->se_tag == LDAP_REQ_DELETE ) {
1704 AC_MEMCPY( cbuf, se->se_csn.bv_val, se->se_csn.bv_len );
1705 delcsn[0].bv_len = se->se_csn.bv_len;
1706 delcsn[0].bv_val[delcsn[0].bv_len] = '\0';
1708 if ( se->se_tag == LDAP_REQ_ADD )
1713 uuids[j].bv_val = uuids[0].bv_val + (j * UUID_LEN);
1714 AC_MEMCPY(uuids[j].bv_val, se->se_uuid.bv_val, UUID_LEN);
1715 uuids[j].bv_len = UUID_LEN;
1717 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1721 /* Zero out unused slots */
1722 for ( i=ndel; i < num - nmods; i++ )
1723 uuids[i].bv_len = 0;
1725 /* Mods must be validated to see if they belong in this delete set.
1729 /* Strip any duplicates */
1730 for ( i=0; i<nmods; i++ ) {
1731 for ( j=0; j<ndel; j++ ) {
1732 if ( bvmatch( &uuids[j], &uuids[num - 1 - i] )) {
1733 uuids[num - 1 - i].bv_len = 0;
1738 if ( uuids[num - 1 - i].bv_len == 0 ) continue;
1739 for ( j=0; j<i; j++ ) {
1740 if ( bvmatch( &uuids[num - 1 - j], &uuids[num - 1 - i] )) {
1741 uuids[num - 1 - i].bv_len = 0;
1752 AttributeAssertion eq = ATTRIBUTEASSERTION_INIT;
1753 slap_callback cb = {0};
1757 fop.o_sync_mode = 0;
1758 fop.o_callback = &cb;
1759 fop.ors_limit = NULL;
1760 fop.ors_tlimit = SLAP_NO_LIMIT;
1761 fop.ors_attrs = slap_anlist_all_attributes;
1762 fop.ors_attrsonly = 0;
1763 fop.o_managedsait = SLAP_CONTROL_CRITICAL;
1765 af.f_choice = LDAP_FILTER_AND;
1768 mf.f_choice = LDAP_FILTER_EQUALITY;
1770 mf.f_av_desc = slap_schema.si_ad_entryUUID;
1771 mf.f_next = fop.ors_filter;
1773 fop.ors_filter = ⁡
1775 cb.sc_response = playlog_cb;
1776 fop.o_bd->bd_info = (BackendInfo *)on->on_info;
1778 for ( i=ndel; i<num; i++ ) {
1779 if ( uuids[i].bv_len != 0 ) {
1780 SlapReply frs = { REP_RESULT };
1782 mf.f_av_value = uuids[i];
1783 cb.sc_private = NULL;
1785 rc = fop.o_bd->be_search( &fop, &frs );
1787 /* If entry was not found, add to delete list */
1788 if ( !cb.sc_private ) {
1789 uuids[ndel++] = uuids[i];
1793 fop.o_bd->bd_info = (BackendInfo *)on;
1796 struct berval cookie;
1798 if ( delcsn[0].bv_len ) {
1799 slap_compose_sync_cookie( op, &cookie, delcsn, srs->sr_state.rid,
1800 slap_serverID ? slap_serverID : -1 );
1802 Debug( LDAP_DEBUG_SYNC, "syncprov_playlog: cookie=%s\n", cookie.bv_val, 0, 0 );
1805 uuids[ndel].bv_val = NULL;
1806 syncprov_sendinfo( op, rs, LDAP_TAG_SYNC_ID_SET,
1807 delcsn[0].bv_len ? &cookie : NULL, 0, uuids, 1 );
1808 if ( delcsn[0].bv_len ) {
1809 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
1812 op->o_tmpfree( uuids, op->o_tmpmemctx );
1816 syncprov_new_ctxcsn( opcookie *opc, syncprov_info_t *si, int csn_changed, int numvals, BerVarray vals )
1821 for ( i=0; i<numvals; i++ ) {
1822 sid = slap_parse_csn_sid( &vals[i] );
1823 for ( j=0; j<si->si_numcsns; j++ ) {
1824 if ( sid < si->si_sids[j] )
1826 if ( sid == si->si_sids[j] ) {
1827 if ( ber_bvcmp( &vals[i], &si->si_ctxcsn[j] ) > 0 ) {
1828 ber_bvreplace( &si->si_ctxcsn[j], &vals[i] );
1835 if ( j == si->si_numcsns || sid != si->si_sids[j] ) {
1836 slap_insert_csn_sids( (struct sync_cookie *)&si->si_ctxcsn,
1843 ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
1845 if ( csn_changed ) {
1847 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1848 for ( ss = si->si_ops; ss; ss = ss->s_next ) {
1849 if ( ss->s_op->o_abandon )
1851 /* Send the updated csn to all syncrepl consumers,
1852 * including the server from which it originated.
1853 * The syncrepl consumer and syncprov provider on
1854 * the originating server may be configured to store
1855 * their csn values in different entries.
1857 syncprov_qresp( opc, ss, LDAP_SYNC_NEW_COOKIE );
1859 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1865 syncprov_op_response( Operation *op, SlapReply *rs )
1867 opcookie *opc = op->o_callback->sc_private;
1868 slap_overinst *on = opc->son;
1869 syncprov_info_t *si = on->on_bi.bi_private;
1872 if ( rs->sr_err == LDAP_SUCCESS )
1874 struct berval maxcsn;
1875 char cbuf[LDAP_PVT_CSNSTR_BUFSIZE];
1876 int do_check = 0, have_psearches, foundit, csn_changed = 0;
1878 ldap_pvt_thread_mutex_lock( &si->si_resp_mutex );
1880 /* Update our context CSN */
1882 maxcsn.bv_val = cbuf;
1883 maxcsn.bv_len = sizeof(cbuf);
1884 ldap_pvt_thread_rdwr_wlock( &si->si_csn_rwlock );
1886 slap_get_commit_csn( op, &maxcsn, &foundit );
1887 if ( BER_BVISEMPTY( &maxcsn ) && SLAP_GLUE_SUBORDINATE( op->o_bd )) {
1888 /* syncrepl queues the CSN values in the db where
1889 * it is configured , not where the changes are made.
1890 * So look for a value in the glue db if we didn't
1891 * find any in this db.
1893 BackendDB *be = op->o_bd;
1894 op->o_bd = select_backend( &be->be_nsuffix[0], 1);
1895 maxcsn.bv_val = cbuf;
1896 maxcsn.bv_len = sizeof(cbuf);
1897 slap_get_commit_csn( op, &maxcsn, &foundit );
1900 if ( !BER_BVISEMPTY( &maxcsn ) ) {
1903 Syntax *syn = slap_schema.si_ad_contextCSN->ad_type->sat_syntax;
1904 assert( !syn->ssyn_validate( syn, &maxcsn ));
1906 sid = slap_parse_csn_sid( &maxcsn );
1907 for ( i=0; i<si->si_numcsns; i++ ) {
1908 if ( sid < si->si_sids[i] )
1910 if ( sid == si->si_sids[i] ) {
1911 if ( ber_bvcmp( &maxcsn, &si->si_ctxcsn[i] ) > 0 ) {
1912 ber_bvreplace( &si->si_ctxcsn[i], &maxcsn );
1918 /* It's a new SID for us */
1919 if ( i == si->si_numcsns || sid != si->si_sids[i] ) {
1920 slap_insert_csn_sids((struct sync_cookie *)&(si->si_ctxcsn),
1926 /* Don't do any processing for consumer contextCSN updates */
1927 if ( op->o_dont_replicate ) {
1928 if ( op->o_tag == LDAP_REQ_MODIFY &&
1929 op->orm_modlist->sml_op == LDAP_MOD_REPLACE &&
1930 op->orm_modlist->sml_desc == slap_schema.si_ad_contextCSN ) {
1931 /* Catch contextCSN updates from syncrepl. We have to look at
1932 * all the attribute values, as there may be more than one csn
1933 * that changed, and only one can be passed in the csn queue.
1935 csn_changed = syncprov_new_ctxcsn( opc, si, csn_changed,
1936 op->orm_modlist->sml_numvals, op->orm_modlist->sml_values );
1938 ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
1945 /* If we're adding the context entry, parse all of its contextCSNs */
1946 if ( op->o_tag == LDAP_REQ_ADD &&
1947 dn_match( &op->o_req_ndn, &si->si_contextdn )) {
1948 Attribute *a = attr_find( op->ora_e->e_attrs, slap_schema.si_ad_contextCSN );
1950 csn_changed = syncprov_new_ctxcsn( opc, si, csn_changed, a->a_numvals, a->a_vals );
1959 if ( si->si_chkops || si->si_chktime ) {
1960 /* Never checkpoint adding the context entry,
1963 if ( op->o_tag != LDAP_REQ_ADD ||
1964 !dn_match( &op->o_req_ndn, &si->si_contextdn )) {
1965 if ( si->si_chkops && si->si_numops >= si->si_chkops ) {
1969 if ( si->si_chktime &&
1970 (op->o_time - si->si_chklast >= si->si_chktime )) {
1971 if ( si->si_chklast ) {
1973 si->si_chklast = op->o_time;
1980 si->si_dirty = !csn_changed;
1981 ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
1985 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
1986 syncprov_checkpoint( op, on );
1987 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
1990 /* only update consumer ctx if this is a newer csn */
1991 if ( csn_changed ) {
1992 opc->sctxcsn = maxcsn;
1995 /* Handle any persistent searches */
1996 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1997 have_psearches = ( si->si_ops != NULL );
1998 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1999 if ( have_psearches ) {
2002 case LDAP_REQ_MODIFY:
2003 case LDAP_REQ_MODRDN:
2004 case LDAP_REQ_EXTENDED:
2005 syncprov_matchops( op, opc, 0 );
2007 case LDAP_REQ_DELETE:
2008 /* for each match in opc->smatches:
2011 for ( sm = opc->smatches; sm; sm=sm->sm_next ) {
2012 if ( sm->sm_op->s_op->o_abandon )
2014 syncprov_qresp( opc, sm->sm_op, LDAP_SYNC_DELETE );
2016 if ( opc->ssres.s_info )
2017 free_resinfo( &opc->ssres );
2022 /* Add any log records */
2023 if ( si->si_logs ) {
2024 syncprov_add_slog( op );
2026 leave: ldap_pvt_thread_mutex_unlock( &si->si_resp_mutex );
2028 return SLAP_CB_CONTINUE;
2031 /* We don't use a subentry to store the context CSN any more.
2032 * We expose the current context CSN as an operational attribute
2033 * of the suffix entry.
2036 syncprov_op_compare( Operation *op, SlapReply *rs )
2038 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
2039 syncprov_info_t *si = on->on_bi.bi_private;
2040 int rc = SLAP_CB_CONTINUE;
2042 if ( dn_match( &op->o_req_ndn, &si->si_contextdn ) &&
2043 op->oq_compare.rs_ava->aa_desc == slap_schema.si_ad_contextCSN )
2048 e.e_name = si->si_contextdn;
2049 e.e_nname = si->si_contextdn;
2052 a.a_desc = slap_schema.si_ad_contextCSN;
2054 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
2056 a.a_vals = si->si_ctxcsn;
2057 a.a_nvals = a.a_vals;
2058 a.a_numvals = si->si_numcsns;
2060 rs->sr_err = access_allowed( op, &e, op->oq_compare.rs_ava->aa_desc,
2061 &op->oq_compare.rs_ava->aa_value, ACL_COMPARE, NULL );
2062 if ( ! rs->sr_err ) {
2063 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
2064 goto return_results;
2067 if ( get_assert( op ) &&
2068 ( test_filter( op, &e, get_assertion( op ) ) != LDAP_COMPARE_TRUE ) )
2070 rs->sr_err = LDAP_ASSERTION_FAILED;
2071 goto return_results;
2075 rs->sr_err = LDAP_COMPARE_FALSE;
2077 if ( attr_valfind( &a,
2078 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
2079 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
2080 &op->oq_compare.rs_ava->aa_value, NULL, op->o_tmpmemctx ) == 0 )
2082 rs->sr_err = LDAP_COMPARE_TRUE;
2087 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
2089 send_ldap_result( op, rs );
2091 if( rs->sr_err == LDAP_COMPARE_FALSE || rs->sr_err == LDAP_COMPARE_TRUE ) {
2092 rs->sr_err = LDAP_SUCCESS;
2101 syncprov_op_mod( Operation *op, SlapReply *rs )
2103 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
2104 syncprov_info_t *si = on->on_bi.bi_private;
2107 int have_psearches, cbsize;
2109 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
2110 have_psearches = ( si->si_ops != NULL );
2112 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
2114 cbsize = sizeof(slap_callback) + sizeof(opcookie) +
2115 (have_psearches ? sizeof(modinst) : 0 );
2117 cb = op->o_tmpcalloc(1, cbsize, op->o_tmpmemctx);
2118 opc = (opcookie *)(cb+1);
2120 cb->sc_response = syncprov_op_response;
2121 cb->sc_cleanup = syncprov_op_cleanup;
2122 cb->sc_private = opc;
2123 cb->sc_next = op->o_callback;
2124 op->o_callback = cb;
2128 if ( op->o_csn.bv_val ) {
2129 opc->osid = slap_parse_csn_sid( &op->o_csn );
2131 if ( op->o_controls ) {
2132 struct sync_cookie *scook =
2133 op->o_controls[slap_cids.sc_LDAPsync];
2135 opc->rsid = scook->sid;
2138 if ( op->o_dont_replicate )
2139 return SLAP_CB_CONTINUE;
2141 /* If there are active persistent searches, lock this operation.
2142 * See seqmod.c for the locking logic on its own.
2144 if ( have_psearches ) {
2145 modtarget *mt, mtdummy;
2148 mi = (modinst *)(opc+1);
2151 /* See if we're already modifying this entry... */
2152 mtdummy.mt_dn = op->o_req_ndn;
2154 ldap_pvt_thread_mutex_lock( &si->si_mods_mutex );
2155 mt = avl_find( si->si_mods, &mtdummy, sp_avl_cmp );
2157 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
2158 if ( mt->mt_mods == NULL ) {
2159 /* Cannot reuse this mt, as another thread is about
2160 * to release it in syncprov_op_cleanup. Wait for them
2161 * to finish; our own insert is required to succeed.
2163 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
2164 ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
2165 ldap_pvt_thread_yield();
2170 mt->mt_tail->mi_next = mi;
2172 ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
2173 /* wait for this op to get to head of list */
2174 while ( mt->mt_mods != mi ) {
2176 /* don't wait on other mods from the same thread */
2177 for ( m2 = mt->mt_mods; m2; m2 = m2->mi_next ) {
2178 if ( m2->mi_op->o_threadctx == op->o_threadctx ) {
2185 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
2186 /* FIXME: if dynamic config can delete overlays or
2187 * databases we'll have to check for cleanup here.
2188 * Currently it's not an issue because there are
2189 * no dynamic config deletes...
2191 if ( slapd_shutdown )
2192 return SLAPD_ABANDON;
2194 if ( !ldap_pvt_thread_pool_pausecheck( &connection_pool ))
2195 ldap_pvt_thread_yield();
2196 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
2198 /* clean up if the caller is giving up */
2199 if ( op->o_abandon ) {
2202 for (m2 = &mt->mt_mods; ; m2 = &(*m2)->mi_next) {
2205 if ( mt->mt_tail == mi )
2206 mt->mt_tail = ( m2 == &mt->mt_mods ) ? NULL : (modinst *)m2;
2210 for (sc = &op->o_callback; ; sc = &(*sc)->sc_next) {
2216 op->o_tmpfree( cb, op->o_tmpmemctx );
2217 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
2218 return SLAPD_ABANDON;
2221 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
2223 /* Record that we're modifying this entry now */
2224 mt = ch_malloc( sizeof(modtarget) );
2227 ber_dupbv( &mt->mt_dn, &mi->mi_op->o_req_ndn );
2228 ldap_pvt_thread_mutex_init( &mt->mt_mutex );
2229 avl_insert( &si->si_mods, mt, sp_avl_cmp, avl_dup_error );
2230 ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
2235 if (( have_psearches || si->si_logs ) && op->o_tag != LDAP_REQ_ADD )
2236 syncprov_matchops( op, opc, 1 );
2238 return SLAP_CB_CONTINUE;
2242 syncprov_op_extended( Operation *op, SlapReply *rs )
2244 if ( exop_is_write( op ))
2245 return syncprov_op_mod( op, rs );
2247 return SLAP_CB_CONTINUE;
2250 typedef struct searchstate {
2251 slap_overinst *ss_on;
2253 BerVarray ss_ctxcsn;
2256 #define SS_PRESENT 0x01
2257 #define SS_CHANGED 0x02
2261 typedef struct SyncOperationBuffer {
2265 AttributeName sob_extra; /* not always present */
2266 /* Further data allocated here */
2267 } SyncOperationBuffer;
2270 syncprov_detach_op( Operation *op, syncops *so, slap_overinst *on )
2272 SyncOperationBuffer *sopbuf2;
2277 GroupAssertion *g1, *g2;
2279 /* count the search attrs */
2280 for (i=0; op->ors_attrs && !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++) {
2281 alen += op->ors_attrs[i].an_name.bv_len + 1;
2283 /* Make a new copy of the operation */
2284 size = offsetof( SyncOperationBuffer, sob_extra ) +
2285 (i ? ( (i+1) * sizeof(AttributeName) + alen) : 0) +
2286 op->o_req_dn.bv_len + 1 +
2287 op->o_req_ndn.bv_len + 1 +
2288 op->o_ndn.bv_len + 1 +
2289 so->s_filterstr.bv_len + 1;
2290 sopbuf2 = ch_calloc( 1, size );
2291 op2 = &sopbuf2->sob_op;
2292 op2->o_hdr = &sopbuf2->sob_hdr;
2293 LDAP_SLIST_FIRST(&op2->o_extra) = &sopbuf2->sob_oe;
2295 /* Copy the fields we care about explicitly, leave the rest alone */
2296 *op2->o_hdr = *op->o_hdr;
2297 op2->o_tag = op->o_tag;
2298 op2->o_time = op->o_time;
2299 op2->o_bd = on->on_info->oi_origdb;
2300 op2->o_request = op->o_request;
2301 op2->o_managedsait = op->o_managedsait;
2302 LDAP_SLIST_FIRST(&op2->o_extra)->oe_key = on;
2303 LDAP_SLIST_NEXT(LDAP_SLIST_FIRST(&op2->o_extra), oe_next) = NULL;
2305 ptr = (char *) sopbuf2 + offsetof( SyncOperationBuffer, sob_extra );
2307 op2->ors_attrs = (AttributeName *) ptr;
2308 ptr = (char *) &op2->ors_attrs[i+1];
2309 for (i=0; !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++) {
2310 op2->ors_attrs[i] = op->ors_attrs[i];
2311 op2->ors_attrs[i].an_name.bv_val = ptr;
2312 ptr = lutil_strcopy( ptr, op->ors_attrs[i].an_name.bv_val ) + 1;
2314 BER_BVZERO( &op2->ors_attrs[i].an_name );
2317 op2->o_authz = op->o_authz;
2318 op2->o_ndn.bv_val = ptr;
2319 ptr = lutil_strcopy(ptr, op->o_ndn.bv_val) + 1;
2320 op2->o_dn = op2->o_ndn;
2321 op2->o_req_dn.bv_len = op->o_req_dn.bv_len;
2322 op2->o_req_dn.bv_val = ptr;
2323 ptr = lutil_strcopy(ptr, op->o_req_dn.bv_val) + 1;
2324 op2->o_req_ndn.bv_len = op->o_req_ndn.bv_len;
2325 op2->o_req_ndn.bv_val = ptr;
2326 ptr = lutil_strcopy(ptr, op->o_req_ndn.bv_val) + 1;
2327 op2->ors_filterstr.bv_val = ptr;
2328 strcpy( ptr, so->s_filterstr.bv_val );
2329 op2->ors_filterstr.bv_len = so->s_filterstr.bv_len;
2331 /* Skip the AND/GE clause that we stuck on in front */
2332 if ( so->s_flags & PS_FIX_FILTER ) {
2333 op2->ors_filter = op->ors_filter->f_and->f_next;
2334 so->s_flags ^= PS_FIX_FILTER;
2336 op2->ors_filter = op->ors_filter;
2338 op2->ors_filter = filter_dup( op2->ors_filter, NULL );
2341 /* Copy any cached group ACLs individually */
2342 op2->o_groups = NULL;
2343 for ( g1=op->o_groups; g1; g1=g1->ga_next ) {
2344 g2 = ch_malloc( sizeof(GroupAssertion) + g1->ga_len );
2346 strcpy( g2->ga_ndn, g1->ga_ndn );
2347 g2->ga_next = op2->o_groups;
2350 /* Don't allow any further group caching */
2351 op2->o_do_not_cache = 1;
2353 /* Add op2 to conn so abandon will find us */
2354 op->o_conn->c_n_ops_executing++;
2355 op->o_conn->c_n_ops_completed--;
2356 LDAP_STAILQ_INSERT_TAIL( &op->o_conn->c_ops, op2, o_next );
2357 so->s_flags |= PS_IS_DETACHED;
2359 /* Prevent anyone else from trying to send a result for this op */
2364 syncprov_search_response( Operation *op, SlapReply *rs )
2366 searchstate *ss = op->o_callback->sc_private;
2367 slap_overinst *on = ss->ss_on;
2368 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2369 sync_control *srs = op->o_controls[slap_cids.sc_LDAPsync];
2371 if ( rs->sr_type == REP_SEARCH || rs->sr_type == REP_SEARCHREF ) {
2373 /* If we got a referral without a referral object, there's
2374 * something missing that we cannot replicate. Just ignore it.
2375 * The consumer will abort because we didn't send the expected
2378 if ( !rs->sr_entry ) {
2379 assert( rs->sr_entry != NULL );
2380 Debug( LDAP_DEBUG_ANY, "bogus referral in context\n",0,0,0 );
2381 return SLAP_CB_CONTINUE;
2383 a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_entryCSN );
2384 if ( a == NULL && rs->sr_operational_attrs != NULL ) {
2385 a = attr_find( rs->sr_operational_attrs, slap_schema.si_ad_entryCSN );
2389 sid = slap_parse_csn_sid( &a->a_nvals[0] );
2391 /* Don't send changed entries back to the originator */
2392 if ( sid == srs->sr_state.sid && srs->sr_state.numcsns ) {
2393 Debug( LDAP_DEBUG_SYNC,
2394 "Entry %s changed by peer, ignored\n",
2395 rs->sr_entry->e_name.bv_val, 0, 0 );
2396 return LDAP_SUCCESS;
2399 /* If not a persistent search */
2401 /* Make sure entry is less than the snapshot'd contextCSN */
2402 for ( i=0; i<ss->ss_numcsns; i++ ) {
2403 if ( sid == ss->ss_sids[i] && ber_bvcmp( &a->a_nvals[0],
2404 &ss->ss_ctxcsn[i] ) > 0 ) {
2405 Debug( LDAP_DEBUG_SYNC,
2406 "Entry %s CSN %s greater than snapshot %s\n",
2407 rs->sr_entry->e_name.bv_val,
2408 a->a_nvals[0].bv_val,
2409 ss->ss_ctxcsn[i].bv_val );
2410 return LDAP_SUCCESS;
2415 /* Don't send old entries twice */
2416 if ( srs->sr_state.ctxcsn ) {
2417 for ( i=0; i<srs->sr_state.numcsns; i++ ) {
2418 if ( sid == srs->sr_state.sids[i] &&
2419 ber_bvcmp( &a->a_nvals[0],
2420 &srs->sr_state.ctxcsn[i] )<= 0 ) {
2421 Debug( LDAP_DEBUG_SYNC,
2422 "Entry %s CSN %s older or equal to ctx %s\n",
2423 rs->sr_entry->e_name.bv_val,
2424 a->a_nvals[0].bv_val,
2425 srs->sr_state.ctxcsn[i].bv_val );
2426 return LDAP_SUCCESS;
2431 rs->sr_ctrls = op->o_tmpalloc( sizeof(LDAPControl *)*2,
2433 rs->sr_ctrls[1] = NULL;
2434 rs->sr_flags |= REP_CTRLS_MUSTBEFREED;
2435 /* If we're in delta-sync mode, always send a cookie */
2436 if ( si->si_nopres && si->si_usehint && a ) {
2437 struct berval cookie;
2438 slap_compose_sync_cookie( op, &cookie, a->a_nvals, srs->sr_state.rid, slap_serverID ? slap_serverID : -1 );
2439 rs->sr_err = syncprov_state_ctrl( op, rs, rs->sr_entry,
2440 LDAP_SYNC_ADD, rs->sr_ctrls, 0, 1, &cookie );
2441 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
2443 rs->sr_err = syncprov_state_ctrl( op, rs, rs->sr_entry,
2444 LDAP_SYNC_ADD, rs->sr_ctrls, 0, 0, NULL );
2446 } else if ( rs->sr_type == REP_RESULT && rs->sr_err == LDAP_SUCCESS ) {
2447 struct berval cookie = BER_BVNULL;
2449 if ( ( ss->ss_flags & SS_CHANGED ) &&
2450 ss->ss_ctxcsn && !BER_BVISNULL( &ss->ss_ctxcsn[0] )) {
2451 slap_compose_sync_cookie( op, &cookie, ss->ss_ctxcsn,
2452 srs->sr_state.rid, slap_serverID ? slap_serverID : -1 );
2454 Debug( LDAP_DEBUG_SYNC, "syncprov_search_response: cookie=%s\n", cookie.bv_val, 0, 0 );
2457 /* Is this a regular refresh?
2458 * Note: refresh never gets here if there were no changes
2461 rs->sr_ctrls = op->o_tmpalloc( sizeof(LDAPControl *)*2,
2463 rs->sr_ctrls[1] = NULL;
2464 rs->sr_flags |= REP_CTRLS_MUSTBEFREED;
2465 rs->sr_err = syncprov_done_ctrl( op, rs, rs->sr_ctrls,
2466 0, 1, &cookie, ( ss->ss_flags & SS_PRESENT ) ? LDAP_SYNC_REFRESH_PRESENTS :
2467 LDAP_SYNC_REFRESH_DELETES );
2468 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
2470 /* It's RefreshAndPersist, transition to Persist phase */
2471 syncprov_sendinfo( op, rs, ( ss->ss_flags & SS_PRESENT ) ?
2472 LDAP_TAG_SYNC_REFRESH_PRESENT : LDAP_TAG_SYNC_REFRESH_DELETE,
2473 ( ss->ss_flags & SS_CHANGED ) ? &cookie : NULL,
2475 if ( !BER_BVISNULL( &cookie ))
2476 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
2478 /* Detach this Op from frontend control */
2479 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
2481 /* But not if this connection was closed along the way */
2482 if ( op->o_abandon ) {
2483 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
2484 /* syncprov_ab_cleanup will free this syncop */
2485 return SLAPD_ABANDON;
2488 ldap_pvt_thread_mutex_lock( &ss->ss_so->s_mutex );
2489 /* Turn off the refreshing flag */
2490 ss->ss_so->s_flags ^= PS_IS_REFRESHING;
2492 syncprov_detach_op( op, ss->ss_so, on );
2494 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
2496 /* If there are queued responses, fire them off */
2497 if ( ss->ss_so->s_res )
2498 syncprov_qstart( ss->ss_so );
2499 ldap_pvt_thread_mutex_unlock( &ss->ss_so->s_mutex );
2502 return LDAP_SUCCESS;
2506 return SLAP_CB_CONTINUE;
2510 syncprov_op_search( Operation *op, SlapReply *rs )
2512 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
2513 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2515 int gotstate = 0, changed = 0, do_present = 0;
2516 syncops *sop = NULL;
2520 int i, *sids, numcsns;
2521 struct berval mincsn, maxcsn;
2525 if ( !(op->o_sync_mode & SLAP_SYNC_REFRESH) ) return SLAP_CB_CONTINUE;
2527 if ( op->ors_deref & LDAP_DEREF_SEARCHING ) {
2528 send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR, "illegal value for derefAliases" );
2532 srs = op->o_controls[slap_cids.sc_LDAPsync];
2534 /* If this is a persistent search, set it up right away */
2535 if ( op->o_sync_mode & SLAP_SYNC_PERSIST ) {
2539 slap_callback sc = {0};
2545 so.s_flags = PS_IS_REFRESHING | PS_FIND_BASE;
2546 /* syncprov_findbase expects to be called as a callback... */
2547 sc.sc_private = &opc;
2549 ldap_pvt_thread_mutex_init( &so.s_mutex );
2550 cb = op->o_callback;
2551 op->o_callback = ≻
2552 rs->sr_err = syncprov_findbase( op, &fc );
2553 op->o_callback = cb;
2554 ldap_pvt_thread_mutex_destroy( &so.s_mutex );
2556 if ( rs->sr_err != LDAP_SUCCESS ) {
2557 send_ldap_result( op, rs );
2560 sop = ch_malloc( sizeof( syncops ));
2562 sop->s_rid = srs->sr_state.rid;
2563 sop->s_sid = srs->sr_state.sid;
2564 /* set refcount=2 to prevent being freed out from under us
2565 * by abandons that occur while we're running here
2569 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
2570 while ( si->si_active ) {
2571 /* Wait for active mods to finish before proceeding, as they
2572 * may already have inspected the si_ops list looking for
2573 * consumers to replicate the change to. Using the log
2574 * doesn't help, as we may finish playing it before the
2575 * active mods gets added to it.
2577 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
2578 if ( slapd_shutdown ) {
2580 return SLAPD_ABANDON;
2582 if ( !ldap_pvt_thread_pool_pausecheck( &connection_pool ))
2583 ldap_pvt_thread_yield();
2584 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
2586 if ( op->o_abandon ) {
2587 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
2589 return SLAPD_ABANDON;
2591 ldap_pvt_thread_mutex_init( &sop->s_mutex );
2592 sop->s_next = si->si_ops;
2595 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
2598 /* snapshot the ctxcsn
2599 * Note: this must not be done before the psearch setup. (ITS#8365)
2601 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
2602 numcsns = si->si_numcsns;
2604 ber_bvarray_dup_x( &ctxcsn, si->si_ctxcsn, op->o_tmpmemctx );
2605 sids = op->o_tmpalloc( numcsns * sizeof(int), op->o_tmpmemctx );
2606 for ( i=0; i<numcsns; i++ )
2607 sids[i] = si->si_sids[i];
2612 dirty = si->si_dirty;
2613 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
2615 /* If we have a cookie, handle the PRESENT lookups */
2616 if ( srs->sr_state.ctxcsn ) {
2620 /* If we don't have any CSN of our own yet, bail out.
2623 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
2624 rs->sr_text = "consumer has state info but provider doesn't!";
2628 if ( !si->si_nopres )
2629 do_present = SS_PRESENT;
2631 /* If there are SIDs we don't recognize in the cookie, drop them */
2632 for (i=0; i<srs->sr_state.numcsns; ) {
2633 for (j=i; j<numcsns; j++) {
2634 if ( srs->sr_state.sids[i] <= sids[j] ) {
2639 if ( j == numcsns || srs->sr_state.sids[i] != sids[j] ) {
2640 char *tmp = srs->sr_state.ctxcsn[i].bv_val;
2641 srs->sr_state.numcsns--;
2642 for ( j=i; j<srs->sr_state.numcsns; j++ ) {
2643 srs->sr_state.ctxcsn[j] = srs->sr_state.ctxcsn[j+1];
2644 srs->sr_state.sids[j] = srs->sr_state.sids[j+1];
2646 srs->sr_state.ctxcsn[j].bv_val = tmp;
2647 srs->sr_state.ctxcsn[j].bv_len = 0;
2653 if (srs->sr_state.numcsns != numcsns) {
2654 /* consumer doesn't have the right number of CSNs */
2655 changed = SS_CHANGED;
2656 if ( srs->sr_state.ctxcsn ) {
2657 ber_bvarray_free_x( srs->sr_state.ctxcsn, op->o_tmpmemctx );
2658 srs->sr_state.ctxcsn = NULL;
2660 if ( srs->sr_state.sids ) {
2661 slap_sl_free( srs->sr_state.sids, op->o_tmpmemctx );
2662 srs->sr_state.sids = NULL;
2664 srs->sr_state.numcsns = 0;
2668 /* Find the smallest CSN which differs from contextCSN */
2671 for ( i=0,j=0; i<srs->sr_state.numcsns; i++ ) {
2673 while ( srs->sr_state.sids[i] != sids[j] ) j++;
2674 if ( BER_BVISEMPTY( &maxcsn ) || ber_bvcmp( &maxcsn,
2675 &srs->sr_state.ctxcsn[i] ) < 0 ) {
2676 maxcsn = srs->sr_state.ctxcsn[i];
2679 newer = ber_bvcmp( &srs->sr_state.ctxcsn[i], &ctxcsn[j] );
2680 /* If our state is newer, tell consumer about changes */
2682 changed = SS_CHANGED;
2683 if ( BER_BVISEMPTY( &mincsn ) || ber_bvcmp( &mincsn,
2684 &srs->sr_state.ctxcsn[i] ) > 0 ) {
2685 mincsn = srs->sr_state.ctxcsn[i];
2688 } else if ( newer > 0 && sids[j] == slap_serverID ) {
2689 /* our state is older, complain to consumer */
2690 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
2691 rs->sr_text = "consumer state is newer than provider!";
2692 Log4( LDAP_DEBUG_SYNC, ldap_syslog_level,
2693 "consumer %d state %s is newer than provider %d state %s\n",
2694 sids[i], srs->sr_state.ctxcsn[i].bv_val, sids[j], /* == slap_serverID */
2698 syncops **sp = &si->si_ops;
2700 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
2701 while ( *sp != sop )
2702 sp = &(*sp)->s_next;
2704 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
2707 rs->sr_ctrls = NULL;
2708 send_ldap_result( op, rs );
2712 if ( BER_BVISEMPTY( &mincsn )) {
2717 /* If nothing has changed, shortcut it */
2718 if ( !changed && !dirty ) {
2720 no_change: if ( !(op->o_sync_mode & SLAP_SYNC_PERSIST) ) {
2721 LDAPControl *ctrls[2];
2725 syncprov_done_ctrl( op, rs, ctrls, 0, 0,
2726 NULL, LDAP_SYNC_REFRESH_DELETES );
2727 rs->sr_ctrls = ctrls;
2728 rs->sr_err = LDAP_SUCCESS;
2729 send_ldap_result( op, rs );
2730 rs->sr_ctrls = NULL;
2736 /* Do we have a sessionlog for this search? */
2740 ldap_pvt_thread_mutex_lock( &sl->sl_mutex );
2741 /* Are there any log entries, and is the consumer state
2742 * present in the session log?
2744 if ( sl->sl_num > 0 ) {
2746 for ( i=0; i<sl->sl_numcsns; i++ ) {
2747 /* SID not present == new enough */
2748 if ( minsid < sl->sl_sids[i] ) {
2753 if ( minsid == sl->sl_sids[i] ) {
2755 if ( ber_bvcmp( &mincsn, &sl->sl_mincsn[i] ) >= 0 )
2760 /* SID not present == new enough */
2761 if ( i == sl->sl_numcsns )
2766 /* mutex is unlocked in playlog */
2767 syncprov_playlog( op, rs, sl, srs, ctxcsn, numcsns, sids );
2769 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
2772 /* Is the CSN still present in the database? */
2773 if ( syncprov_findcsn( op, FIND_CSN, &mincsn ) != LDAP_SUCCESS ) {
2774 /* No, so a reload is required */
2775 /* the 2.2 consumer doesn't send this hint */
2776 if ( si->si_usehint && srs->sr_rhint == 0 ) {
2778 ber_bvarray_free_x( ctxcsn, op->o_tmpmemctx );
2780 op->o_tmpfree( sids, op->o_tmpmemctx );
2781 rs->sr_err = LDAP_SYNC_REFRESH_REQUIRED;
2782 rs->sr_text = "sync cookie is stale";
2785 if ( srs->sr_state.ctxcsn ) {
2786 ber_bvarray_free_x( srs->sr_state.ctxcsn, op->o_tmpmemctx );
2787 srs->sr_state.ctxcsn = NULL;
2789 if ( srs->sr_state.sids ) {
2790 slap_sl_free( srs->sr_state.sids, op->o_tmpmemctx );
2791 srs->sr_state.sids = NULL;
2793 srs->sr_state.numcsns = 0;
2796 /* If changed and doing Present lookup, send Present UUIDs */
2797 if ( do_present && syncprov_findcsn( op, FIND_PRESENT, 0 ) !=
2800 ber_bvarray_free_x( ctxcsn, op->o_tmpmemctx );
2802 op->o_tmpfree( sids, op->o_tmpmemctx );
2807 /* The consumer knows nothing, we know nothing. OK. */
2810 /* No consumer state, assume something has changed */
2811 changed = SS_CHANGED;
2815 /* Append CSN range to search filter, save original filter
2816 * for persistent search evaluation
2819 ldap_pvt_thread_mutex_lock( &sop->s_mutex );
2820 sop->s_filterstr = op->ors_filterstr;
2821 /* correct the refcount that was set to 2 before */
2825 /* If something changed, find the changes */
2826 if ( gotstate && ( changed || dirty ) ) {
2827 Filter *fand, *fava;
2829 fand = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
2830 fand->f_choice = LDAP_FILTER_AND;
2831 fand->f_next = NULL;
2832 fava = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
2834 fava->f_choice = LDAP_FILTER_GE;
2835 fava->f_ava = op->o_tmpalloc( sizeof(AttributeAssertion), op->o_tmpmemctx );
2836 fava->f_ava->aa_desc = slap_schema.si_ad_entryCSN;
2837 #ifdef LDAP_COMP_MATCH
2838 fava->f_ava->aa_cf = NULL;
2840 ber_dupbv_x( &fava->f_ava->aa_value, &mincsn, op->o_tmpmemctx );
2841 fava->f_next = op->ors_filter;
2842 op->ors_filter = fand;
2843 filter2bv_x( op, op->ors_filter, &op->ors_filterstr );
2845 sop->s_flags |= PS_FIX_FILTER;
2849 ldap_pvt_thread_mutex_unlock( &sop->s_mutex );
2852 /* Let our callback add needed info to returned entries */
2853 cb = op->o_tmpcalloc(1, sizeof(slap_callback)+sizeof(searchstate), op->o_tmpmemctx);
2854 ss = (searchstate *)(cb+1);
2857 ss->ss_flags = do_present | changed;
2858 ss->ss_ctxcsn = ctxcsn;
2859 ss->ss_numcsns = numcsns;
2861 cb->sc_response = syncprov_search_response;
2862 cb->sc_private = ss;
2863 cb->sc_next = op->o_callback;
2864 op->o_callback = cb;
2866 /* If this is a persistent search and no changes were reported during
2867 * the refresh phase, just invoke the response callback to transition
2868 * us into persist phase
2870 if ( !changed && !dirty ) {
2871 rs->sr_err = LDAP_SUCCESS;
2872 rs->sr_nentries = 0;
2873 send_ldap_result( op, rs );
2876 return SLAP_CB_CONTINUE;
2880 syncprov_operational(
2884 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
2885 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2887 /* This prevents generating unnecessarily; frontend will strip
2888 * any statically stored copy.
2890 if ( op->o_sync != SLAP_CONTROL_NONE )
2891 return SLAP_CB_CONTINUE;
2893 if ( rs->sr_entry &&
2894 dn_match( &rs->sr_entry->e_nname, &si->si_contextdn )) {
2896 if ( SLAP_OPATTRS( rs->sr_attr_flags ) ||
2897 ad_inlist( slap_schema.si_ad_contextCSN, rs->sr_attrs )) {
2898 Attribute *a, **ap = NULL;
2900 for ( a=rs->sr_entry->e_attrs; a; a=a->a_next ) {
2901 if ( a->a_desc == slap_schema.si_ad_contextCSN )
2905 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
2906 if ( si->si_ctxcsn ) {
2908 for ( ap = &rs->sr_operational_attrs; *ap;
2909 ap=&(*ap)->a_next );
2911 a = attr_alloc( slap_schema.si_ad_contextCSN );
2916 if ( rs_entry2modifiable( op, rs, on )) {
2917 a = attr_find( rs->sr_entry->e_attrs,
2918 slap_schema.si_ad_contextCSN );
2920 if ( a->a_nvals != a->a_vals ) {
2921 ber_bvarray_free( a->a_nvals );
2924 ber_bvarray_free( a->a_vals );
2928 attr_valadd( a, si->si_ctxcsn, si->si_ctxcsn, si->si_numcsns );
2930 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
2933 return SLAP_CB_CONTINUE;
2943 static ConfigDriver sp_cf_gen;
2945 static ConfigTable spcfg[] = {
2946 { "syncprov-checkpoint", "ops> <minutes", 3, 3, 0, ARG_MAGIC|SP_CHKPT,
2947 sp_cf_gen, "( OLcfgOvAt:1.1 NAME 'olcSpCheckpoint' "
2948 "DESC 'ContextCSN checkpoint interval in ops and minutes' "
2949 "SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
2950 { "syncprov-sessionlog", "ops", 2, 2, 0, ARG_INT|ARG_MAGIC|SP_SESSL,
2951 sp_cf_gen, "( OLcfgOvAt:1.2 NAME 'olcSpSessionlog' "
2952 "DESC 'Session log size in ops' "
2953 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
2954 { "syncprov-nopresent", NULL, 2, 2, 0, ARG_ON_OFF|ARG_MAGIC|SP_NOPRES,
2955 sp_cf_gen, "( OLcfgOvAt:1.3 NAME 'olcSpNoPresent' "
2956 "DESC 'Omit Present phase processing' "
2957 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
2958 { "syncprov-reloadhint", NULL, 2, 2, 0, ARG_ON_OFF|ARG_MAGIC|SP_USEHINT,
2959 sp_cf_gen, "( OLcfgOvAt:1.4 NAME 'olcSpReloadHint' "
2960 "DESC 'Observe Reload Hint in Request control' "
2961 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
2962 { NULL, NULL, 0, 0, 0, ARG_IGNORED }
2965 static ConfigOCs spocs[] = {
2966 { "( OLcfgOvOc:1.1 "
2967 "NAME 'olcSyncProvConfig' "
2968 "DESC 'SyncRepl Provider configuration' "
2969 "SUP olcOverlayConfig "
2970 "MAY ( olcSpCheckpoint "
2971 "$ olcSpSessionlog "
2973 "$ olcSpReloadHint "
2975 Cft_Overlay, spcfg },
2980 sp_cf_gen(ConfigArgs *c)
2982 slap_overinst *on = (slap_overinst *)c->bi;
2983 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2986 if ( c->op == SLAP_CONFIG_EMIT ) {
2987 switch ( c->type ) {
2989 if ( si->si_chkops || si->si_chktime ) {
2991 /* we assume si_chktime is a multiple of 60
2992 * because the parsed value was originally
2993 * multiplied by 60 */
2994 bv.bv_len = snprintf( c->cr_msg, sizeof( c->cr_msg ),
2995 "%d %d", si->si_chkops, si->si_chktime/60 );
2996 if ( bv.bv_len >= sizeof( c->cr_msg ) ) {
2999 bv.bv_val = c->cr_msg;
3000 value_add_one( &c->rvalue_vals, &bv );
3007 if ( si->si_logs ) {
3008 c->value_int = si->si_logs->sl_size;
3014 if ( si->si_nopres ) {
3021 if ( si->si_usehint ) {
3029 } else if ( c->op == LDAP_MOD_DELETE ) {
3030 switch ( c->type ) {
3037 si->si_logs->sl_size = 0;
3039 rc = LDAP_NO_SUCH_ATTRIBUTE;
3042 if ( si->si_nopres )
3045 rc = LDAP_NO_SUCH_ATTRIBUTE;
3048 if ( si->si_usehint )
3051 rc = LDAP_NO_SUCH_ATTRIBUTE;
3056 switch ( c->type ) {
3058 if ( lutil_atoi( &si->si_chkops, c->argv[1] ) != 0 ) {
3059 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s unable to parse checkpoint ops # \"%s\"",
3060 c->argv[0], c->argv[1] );
3061 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
3062 "%s: %s\n", c->log, c->cr_msg, 0 );
3063 return ARG_BAD_CONF;
3065 if ( si->si_chkops <= 0 ) {
3066 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s invalid checkpoint ops # \"%d\"",
3067 c->argv[0], si->si_chkops );
3068 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
3069 "%s: %s\n", c->log, c->cr_msg, 0 );
3070 return ARG_BAD_CONF;
3072 if ( lutil_atoi( &si->si_chktime, c->argv[2] ) != 0 ) {
3073 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s unable to parse checkpoint time \"%s\"",
3074 c->argv[0], c->argv[1] );
3075 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
3076 "%s: %s\n", c->log, c->cr_msg, 0 );
3077 return ARG_BAD_CONF;
3079 if ( si->si_chktime <= 0 ) {
3080 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s invalid checkpoint time \"%d\"",
3081 c->argv[0], si->si_chkops );
3082 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
3083 "%s: %s\n", c->log, c->cr_msg, 0 );
3084 return ARG_BAD_CONF;
3086 si->si_chktime *= 60;
3090 int size = c->value_int;
3093 snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s size %d is negative",
3095 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
3096 "%s: %s\n", c->log, c->cr_msg, 0 );
3097 return ARG_BAD_CONF;
3101 sl = ch_malloc( sizeof( sessionlog ));
3102 sl->sl_mincsn = NULL;
3106 sl->sl_head = sl->sl_tail = NULL;
3107 ldap_pvt_thread_mutex_init( &sl->sl_mutex );
3114 si->si_nopres = c->value_int;
3117 si->si_usehint = c->value_int;
3123 /* ITS#3456 we cannot run this search on the main thread, must use a
3124 * child thread in order to insure we have a big enough stack.
3131 syncprov_findcsn( ptr, FIND_MAXCSN, 0 );
3136 /* Read any existing contextCSN from the underlying db.
3137 * Then search for any entries newer than that. If no value exists,
3138 * just generate it. Cache whatever result.
3146 slap_overinst *on = (slap_overinst *) be->bd_info;
3147 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
3149 Connection conn = { 0 };
3150 OperationBuffer opbuf;
3155 void *thrctx = NULL;
3157 if ( !SLAP_LASTMOD( be )) {
3158 Debug( LDAP_DEBUG_ANY,
3159 "syncprov_db_open: invalid config, lastmod must be enabled\n", 0, 0, 0 );
3163 if ( slapMode & SLAP_TOOL_MODE ) {
3167 rc = overlay_register_control( be, LDAP_CONTROL_SYNC );
3172 thrctx = ldap_pvt_thread_pool_context();
3173 connection_fake_init2( &conn, &opbuf, thrctx, 0 );
3176 op->o_dn = be->be_rootdn;
3177 op->o_ndn = be->be_rootndn;
3179 if ( SLAP_SYNC_SUBENTRY( be )) {
3180 build_new_dn( &si->si_contextdn, be->be_nsuffix,
3181 (struct berval *)&slap_ldapsync_cn_bv, NULL );
3183 si->si_contextdn = be->be_nsuffix[0];
3185 rc = overlay_entry_get_ov( op, &si->si_contextdn, NULL,
3186 slap_schema.si_ad_contextCSN, 0, &e, on );
3189 ldap_pvt_thread_t tid;
3191 a = attr_find( e->e_attrs, slap_schema.si_ad_contextCSN );
3193 ber_bvarray_dup_x( &si->si_ctxcsn, a->a_vals, NULL );
3194 si->si_numcsns = a->a_numvals;
3195 si->si_sids = slap_parse_csn_sids( si->si_ctxcsn, a->a_numvals, NULL );
3196 slap_sort_csn_sids( si->si_ctxcsn, si->si_sids, si->si_numcsns, NULL );
3198 overlay_entry_release_ov( op, e, 0, on );
3199 if ( si->si_ctxcsn && !SLAP_DBCLEAN( be )) {
3200 op->o_tag = LDAP_REQ_SEARCH;
3201 op->o_req_dn = be->be_suffix[0];
3202 op->o_req_ndn = be->be_nsuffix[0];
3203 op->ors_scope = LDAP_SCOPE_SUBTREE;
3204 ldap_pvt_thread_create( &tid, 0, syncprov_db_otask, op );
3205 ldap_pvt_thread_join( tid, NULL );
3209 /* Didn't find a contextCSN, should we generate one? */
3210 if ( !si->si_ctxcsn ) {
3211 char csnbuf[ LDAP_PVT_CSNSTR_BUFSIZE ];
3214 if ( slap_serverID || SLAP_SYNC_SHADOW( op->o_bd )) {
3215 /* If we're also a consumer, then don't generate anything.
3216 * Wait for our provider to send it to us, or for a local
3217 * modify if we have multimaster.
3221 csn.bv_val = csnbuf;
3222 csn.bv_len = sizeof( csnbuf );
3223 slap_get_csn( op, &csn, 0 );
3224 value_add_one( &si->si_ctxcsn, &csn );
3226 si->si_sids = ch_malloc( sizeof(int) );
3227 si->si_sids[0] = slap_serverID;
3229 /* make sure we do a checkpoint on close */
3233 /* Initialize the sessionlog mincsn */
3234 if ( si->si_logs && si->si_numcsns ) {
3235 sessionlog *sl = si->si_logs;
3237 ber_bvarray_dup_x( &sl->sl_mincsn, si->si_ctxcsn, NULL );
3238 sl->sl_numcsns = si->si_numcsns;
3239 sl->sl_sids = ch_malloc( si->si_numcsns * sizeof(int) );
3240 for ( i=0; i < si->si_numcsns; i++ )
3241 sl->sl_sids[i] = si->si_sids[i];
3245 op->o_bd->bd_info = (BackendInfo *)on;
3249 /* Write the current contextCSN into the underlying db.
3257 slap_overinst *on = (slap_overinst *) be->bd_info;
3258 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
3259 #ifdef SLAP_CONFIG_DELETE
3260 syncops *so, *sonext;
3261 #endif /* SLAP_CONFIG_DELETE */
3263 if ( slapMode & SLAP_TOOL_MODE ) {
3266 if ( si->si_numops ) {
3267 Connection conn = {0};
3268 OperationBuffer opbuf;
3272 thrctx = ldap_pvt_thread_pool_context();
3273 connection_fake_init2( &conn, &opbuf, thrctx, 0 );
3276 op->o_dn = be->be_rootdn;
3277 op->o_ndn = be->be_rootndn;
3278 syncprov_checkpoint( op, on );
3281 #ifdef SLAP_CONFIG_DELETE
3282 if ( !slapd_shutdown ) {
3283 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
3284 for ( so=si->si_ops, sonext=so; so; so=sonext ) {
3285 SlapReply rs = {REP_RESULT};
3286 rs.sr_err = LDAP_UNAVAILABLE;
3287 send_ldap_result( so->s_op, &rs );
3289 if ( so->s_flags & PS_TASK_QUEUED )
3290 ldap_pvt_thread_pool_retract( so->s_pool_cookie );
3291 if ( !syncprov_drop_psearch( so, 0 ))
3295 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
3297 overlay_unregister_control( be, LDAP_CONTROL_SYNC );
3298 #endif /* SLAP_CONFIG_DELETE */
3309 slap_overinst *on = (slap_overinst *)be->bd_info;
3310 syncprov_info_t *si;
3312 if ( SLAP_ISGLOBALOVERLAY( be ) ) {
3313 Debug( LDAP_DEBUG_ANY,
3314 "syncprov must be instantiated within a database.\n",
3319 si = ch_calloc(1, sizeof(syncprov_info_t));
3320 on->on_bi.bi_private = si;
3321 ldap_pvt_thread_rdwr_init( &si->si_csn_rwlock );
3322 ldap_pvt_thread_mutex_init( &si->si_ops_mutex );
3323 ldap_pvt_thread_mutex_init( &si->si_mods_mutex );
3324 ldap_pvt_thread_mutex_init( &si->si_resp_mutex );
3326 csn_anlist[0].an_desc = slap_schema.si_ad_entryCSN;
3327 csn_anlist[0].an_name = slap_schema.si_ad_entryCSN->ad_cname;
3328 csn_anlist[1].an_desc = slap_schema.si_ad_entryUUID;
3329 csn_anlist[1].an_name = slap_schema.si_ad_entryUUID->ad_cname;
3331 uuid_anlist[0].an_desc = slap_schema.si_ad_entryUUID;
3332 uuid_anlist[0].an_name = slap_schema.si_ad_entryUUID->ad_cname;
3338 syncprov_db_destroy(
3343 slap_overinst *on = (slap_overinst *)be->bd_info;
3344 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
3347 if ( si->si_logs ) {
3348 sessionlog *sl = si->si_logs;
3349 slog_entry *se = sl->sl_head;
3352 slog_entry *se_next = se->se_next;
3356 if ( sl->sl_mincsn )
3357 ber_bvarray_free( sl->sl_mincsn );
3359 ch_free( sl->sl_sids );
3361 ldap_pvt_thread_mutex_destroy(&si->si_logs->sl_mutex);
3362 ch_free( si->si_logs );
3364 if ( si->si_ctxcsn )
3365 ber_bvarray_free( si->si_ctxcsn );
3367 ch_free( si->si_sids );
3368 ldap_pvt_thread_mutex_destroy( &si->si_resp_mutex );
3369 ldap_pvt_thread_mutex_destroy( &si->si_mods_mutex );
3370 ldap_pvt_thread_mutex_destroy( &si->si_ops_mutex );
3371 ldap_pvt_thread_rdwr_destroy( &si->si_csn_rwlock );
3378 static int syncprov_parseCtrl (
3384 BerElementBuffer berbuf;
3385 BerElement *ber = (BerElement *)&berbuf;
3388 struct berval cookie = BER_BVNULL;
3392 if ( op->o_sync != SLAP_CONTROL_NONE ) {
3393 rs->sr_text = "Sync control specified multiple times";
3394 return LDAP_PROTOCOL_ERROR;
3397 if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
3398 rs->sr_text = "Sync control specified with pagedResults control";
3399 return LDAP_PROTOCOL_ERROR;
3402 if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
3403 rs->sr_text = "Sync control value is absent";
3404 return LDAP_PROTOCOL_ERROR;
3407 if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
3408 rs->sr_text = "Sync control value is empty";
3409 return LDAP_PROTOCOL_ERROR;
3412 /* Parse the control value
3413 * syncRequestValue ::= SEQUENCE {
3418 * refreshAndPersist (3)
3420 * cookie syncCookie OPTIONAL
3424 ber_init2( ber, &ctrl->ldctl_value, 0 );
3426 if ( (tag = ber_scanf( ber, "{i" /*}*/, &mode )) == LBER_ERROR ) {
3427 rs->sr_text = "Sync control : mode decoding error";
3428 return LDAP_PROTOCOL_ERROR;
3432 case LDAP_SYNC_REFRESH_ONLY:
3433 mode = SLAP_SYNC_REFRESH;
3435 case LDAP_SYNC_REFRESH_AND_PERSIST:
3436 mode = SLAP_SYNC_REFRESH_AND_PERSIST;
3439 rs->sr_text = "Sync control : unknown update mode";
3440 return LDAP_PROTOCOL_ERROR;
3443 tag = ber_peek_tag( ber, &len );
3445 if ( tag == LDAP_TAG_SYNC_COOKIE ) {
3446 if (( ber_scanf( ber, /*{*/ "m", &cookie )) == LBER_ERROR ) {
3447 rs->sr_text = "Sync control : cookie decoding error";
3448 return LDAP_PROTOCOL_ERROR;
3450 tag = ber_peek_tag( ber, &len );
3452 if ( tag == LDAP_TAG_RELOAD_HINT ) {
3453 if (( ber_scanf( ber, /*{*/ "b", &rhint )) == LBER_ERROR ) {
3454 rs->sr_text = "Sync control : rhint decoding error";
3455 return LDAP_PROTOCOL_ERROR;
3458 if (( ber_scanf( ber, /*{*/ "}")) == LBER_ERROR ) {
3459 rs->sr_text = "Sync control : decoding error";
3460 return LDAP_PROTOCOL_ERROR;
3462 sr = op->o_tmpcalloc( 1, sizeof(struct sync_control), op->o_tmpmemctx );
3463 sr->sr_rhint = rhint;
3464 if (!BER_BVISNULL(&cookie)) {
3465 ber_dupbv_x( &sr->sr_state.octet_str, &cookie, op->o_tmpmemctx );
3466 /* If parse fails, pretend no cookie was sent */
3467 if ( slap_parse_sync_cookie( &sr->sr_state, op->o_tmpmemctx ) ||
3468 sr->sr_state.rid == -1 ) {
3469 if ( sr->sr_state.ctxcsn ) {
3470 ber_bvarray_free_x( sr->sr_state.ctxcsn, op->o_tmpmemctx );
3471 sr->sr_state.ctxcsn = NULL;
3473 sr->sr_state.numcsns = 0;
3477 op->o_controls[slap_cids.sc_LDAPsync] = sr;
3479 op->o_sync = ctrl->ldctl_iscritical
3480 ? SLAP_CONTROL_CRITICAL
3481 : SLAP_CONTROL_NONCRITICAL;
3483 op->o_sync_mode |= mode; /* o_sync_mode shares o_sync */
3485 return LDAP_SUCCESS;
3488 /* This overlay is set up for dynamic loading via moduleload. For static
3489 * configuration, you'll need to arrange for the slap_overinst to be
3490 * initialized and registered by some other function inside slapd.
3493 static slap_overinst syncprov;
3496 syncprov_initialize()
3500 rc = register_supported_control( LDAP_CONTROL_SYNC,
3501 SLAP_CTRL_SEARCH, NULL,
3502 syncprov_parseCtrl, &slap_cids.sc_LDAPsync );
3503 if ( rc != LDAP_SUCCESS ) {
3504 Debug( LDAP_DEBUG_ANY,
3505 "syncprov_init: Failed to register control %d\n", rc, 0, 0 );
3509 syncprov.on_bi.bi_type = "syncprov";
3510 syncprov.on_bi.bi_db_init = syncprov_db_init;
3511 syncprov.on_bi.bi_db_destroy = syncprov_db_destroy;
3512 syncprov.on_bi.bi_db_open = syncprov_db_open;
3513 syncprov.on_bi.bi_db_close = syncprov_db_close;
3515 syncprov.on_bi.bi_op_abandon = syncprov_op_abandon;
3516 syncprov.on_bi.bi_op_cancel = syncprov_op_abandon;
3518 syncprov.on_bi.bi_op_add = syncprov_op_mod;
3519 syncprov.on_bi.bi_op_compare = syncprov_op_compare;
3520 syncprov.on_bi.bi_op_delete = syncprov_op_mod;
3521 syncprov.on_bi.bi_op_modify = syncprov_op_mod;
3522 syncprov.on_bi.bi_op_modrdn = syncprov_op_mod;
3523 syncprov.on_bi.bi_op_search = syncprov_op_search;
3524 syncprov.on_bi.bi_extended = syncprov_op_extended;
3525 syncprov.on_bi.bi_operational = syncprov_operational;
3527 syncprov.on_bi.bi_cf_ocs = spocs;
3529 generic_filter.f_desc = slap_schema.si_ad_objectClass;
3531 rc = config_register_schema( spcfg, spocs );
3532 if ( rc ) return rc;
3534 return overlay_register( &syncprov );
3537 #if SLAPD_OVER_SYNCPROV == SLAPD_MOD_DYNAMIC
3539 init_module( int argc, char *argv[] )
3541 return syncprov_initialize();
3543 #endif /* SLAPD_OVER_SYNCPROV == SLAPD_MOD_DYNAMIC */
3545 #endif /* defined(SLAPD_OVER_SYNCPROV) */