1 /* syncprov.c - syncrepl provider */
2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 * Copyright 2004 The OpenLDAP Foundation.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted only as authorized by the OpenLDAP
11 * A copy of this license is available in the file LICENSE in the
12 * top-level directory of the distribution or, alternatively, at
13 * <http://www.OpenLDAP.org/license.html>.
16 * This work was initially developed by Howard Chu for inclusion in
22 #ifdef SLAPD_OVER_SYNCPROV
24 #include <ac/string.h>
28 /* A modify request on a particular entry */
29 typedef struct modinst {
30 struct modinst *mi_next;
34 typedef struct modtarget {
35 struct modinst *mt_mods;
36 struct modinst *mt_tail;
38 ldap_pvt_thread_mutex_t mt_mutex;
41 /* A queued result of a persistent search */
42 typedef struct syncres {
43 struct syncres *s_next;
52 /* Record of a persistent search */
53 typedef struct syncops {
54 struct syncops *s_next;
55 struct berval s_base; /* ndn of search base */
56 ID s_eid; /* entryID of search base */
57 Operation *s_op; /* search op */
60 struct berval s_filterstr;
61 int s_flags; /* search status */
62 int s_inuse; /* reference count */
63 struct syncres *s_res;
64 struct syncres *s_restail;
65 ldap_pvt_thread_mutex_t s_mutex;
68 /* A received sync control */
69 typedef struct sync_control {
70 struct sync_cookie sr_state;
74 #if 0 /* moved back to slap.h */
75 #define o_sync o_ctrlflag[slap_cids.sc_LDAPsync]
77 /* o_sync_mode uses data bits of o_sync */
78 #define o_sync_mode o_ctrlflag[slap_cids.sc_LDAPsync]
80 #define SLAP_SYNC_NONE (LDAP_SYNC_NONE<<SLAP_CONTROL_SHIFT)
81 #define SLAP_SYNC_REFRESH (LDAP_SYNC_REFRESH_ONLY<<SLAP_CONTROL_SHIFT)
82 #define SLAP_SYNC_PERSIST (LDAP_SYNC_RESERVED<<SLAP_CONTROL_SHIFT)
83 #define SLAP_SYNC_REFRESH_AND_PERSIST (LDAP_SYNC_REFRESH_AND_PERSIST<<SLAP_CONTROL_SHIFT)
85 #define PS_IS_REFRESHING 0x01
87 /* Record of which searches matched at premodify step */
88 typedef struct syncmatches {
89 struct syncmatches *sm_next;
93 /* The main state for this overlay */
94 typedef struct syncprov_info_t {
96 struct berval si_ctxcsn; /* ldapsync context */
97 int si_chkops; /* checkpointing info */
99 int si_numops; /* number of ops since last checkpoint */
100 time_t si_chklast; /* time of last checkpoint */
101 Avlnode *si_mods; /* entries being modified */
102 ldap_pvt_thread_mutex_t si_csn_mutex;
103 ldap_pvt_thread_mutex_t si_ops_mutex;
104 ldap_pvt_thread_rdwr_t si_mods_rwlock;
105 char si_ctxcsnbuf[LDAP_LUTIL_CSNSTR_BUFSIZE];
108 typedef struct opcookie {
110 syncmatches *smatches;
111 struct berval sdn; /* DN of entry, for deletes */
113 struct berval suuid; /* UUID of entry */
114 struct berval sctxcsn;
115 int sreference; /* Is the entry a reference? */
118 typedef struct fbase_cookie {
119 struct berval *fdn; /* DN of a modified entry, for scope testing */
120 syncops *fss; /* persistent search we're testing against */
121 int fbase; /* if TRUE we found the search base and it's still valid */
122 int fscope; /* if TRUE then fdn is within the psearch scope */
125 static AttributeName csn_anlist[2];
126 static AttributeName uuid_anlist[2];
128 /* Build a LDAPsync intermediate state control */
134 int entry_sync_state,
138 struct berval *cookie )
143 const char *text = NULL;
145 BerElementBuffer berbuf;
146 BerElement *ber = (BerElement *)&berbuf;
148 struct berval entryuuid_bv = BER_BVNULL;
150 ber_init2( ber, 0, LBER_USE_DER );
151 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
153 ctrls[num_ctrls] = op->o_tmpalloc( sizeof ( LDAPControl ), op->o_tmpmemctx );
155 for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
156 AttributeDescription *desc = a->a_desc;
157 if ( desc == slap_schema.si_ad_entryUUID ) {
158 entryuuid_bv = a->a_nvals[0];
163 if ( send_cookie && cookie ) {
164 ber_printf( ber, "{eOON}",
165 entry_sync_state, &entryuuid_bv, cookie );
167 ber_printf( ber, "{eON}",
168 entry_sync_state, &entryuuid_bv );
171 ctrls[num_ctrls]->ldctl_oid = LDAP_CONTROL_SYNC_STATE;
172 ctrls[num_ctrls]->ldctl_iscritical = (op->o_sync == SLAP_CONTROL_CRITICAL);
173 ret = ber_flatten2( ber, &ctrls[num_ctrls]->ldctl_value, 1 );
178 Debug( LDAP_DEBUG_TRACE,
179 "slap_build_sync_ctrl: ber_flatten2 failed\n",
181 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
188 /* Build a LDAPsync final state control */
196 struct berval *cookie,
200 BerElementBuffer berbuf;
201 BerElement *ber = (BerElement *)&berbuf;
203 ber_init2( ber, NULL, LBER_USE_DER );
204 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
206 ctrls[num_ctrls] = op->o_tmpalloc( sizeof ( LDAPControl ), op->o_tmpmemctx );
208 ber_printf( ber, "{" );
209 if ( send_cookie && cookie ) {
210 ber_printf( ber, "O", cookie );
212 if ( refreshDeletes == LDAP_SYNC_REFRESH_DELETES ) {
213 ber_printf( ber, "b", refreshDeletes );
215 ber_printf( ber, "N}" );
217 ctrls[num_ctrls]->ldctl_oid = LDAP_CONTROL_SYNC_DONE;
218 ctrls[num_ctrls]->ldctl_iscritical = (op->o_sync == SLAP_CONTROL_CRITICAL);
219 ret = ber_flatten2( ber, &ctrls[num_ctrls]->ldctl_value, 1 );
224 Debug( LDAP_DEBUG_TRACE,
225 "syncprov_done_ctrl: ber_flatten2 failed\n",
227 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
235 /* Generate state based on session log - not implemented yet */
237 syncprov_state_ctrl_from_slog(
240 struct slog_entry *slog_e,
241 int entry_sync_state,
245 struct berval *cookie)
250 const char *text = NULL;
252 BerElementBuffer berbuf;
253 BerElement *ber = (BerElement *)&berbuf;
255 struct berval entryuuid_bv = BER_BVNULL;
257 ber_init2( ber, NULL, LBER_USE_DER );
258 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
260 ctrls[num_ctrls] = ch_malloc ( sizeof ( LDAPControl ) );
262 entryuuid_bv = slog_e->sl_uuid;
264 if ( send_cookie && cookie ) {
265 ber_printf( ber, "{eOON}",
266 entry_sync_state, &entryuuid_bv, cookie );
268 ber_printf( ber, "{eON}",
269 entry_sync_state, &entryuuid_bv );
272 ctrls[num_ctrls]->ldctl_oid = LDAP_CONTROL_SYNC_STATE;
273 ctrls[num_ctrls]->ldctl_iscritical = (op->o_sync == SLAP_CONTROL_CRITICAL);
274 ret = ber_flatten2( ber, &ctrls[num_ctrls]->ldctl_value, 1 );
279 Debug( LDAP_DEBUG_TRACE,
280 "slap_build_sync_ctrl: ber_flatten2 failed\n",
282 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
295 struct berval *cookie,
300 BerElementBuffer berbuf;
301 BerElement *ber = (BerElement *)&berbuf;
302 struct berval rspdata;
306 ber_init2( ber, NULL, LBER_USE_DER );
307 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
311 case LDAP_TAG_SYNC_NEW_COOKIE:
312 ber_printf( ber, "tO", type, cookie );
314 case LDAP_TAG_SYNC_REFRESH_DELETE:
315 case LDAP_TAG_SYNC_REFRESH_PRESENT:
316 ber_printf( ber, "t{", type );
318 ber_printf( ber, "O", cookie );
320 if ( refreshDone == 0 ) {
321 ber_printf( ber, "b", refreshDone );
323 ber_printf( ber, "N}" );
325 case LDAP_TAG_SYNC_ID_SET:
326 ber_printf( ber, "t{", type );
328 ber_printf( ber, "O", cookie );
330 if ( refreshDeletes == 1 ) {
331 ber_printf( ber, "b", refreshDeletes );
333 ber_printf( ber, "[W]", syncUUIDs );
334 ber_printf( ber, "N}" );
337 Debug( LDAP_DEBUG_TRACE,
338 "syncprov_sendinfo: invalid syncinfo type (%d)\n",
344 ret = ber_flatten2( ber, &rspdata, 0 );
347 Debug( LDAP_DEBUG_TRACE,
348 "syncprov_sendinfo: ber_flatten2 failed\n",
350 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
354 rs->sr_rspoid = LDAP_SYNC_INFO;
355 rs->sr_rspdata = &rspdata;
356 send_ldap_intermediate( op, rs );
357 rs->sr_rspdata = NULL;
363 /* Find a modtarget in an AVL tree */
365 sp_avl_cmp( const void *c1, const void *c2 )
367 const modtarget *m1, *m2;
371 rc = m1->mt_op->o_req_ndn.bv_len - m2->mt_op->o_req_ndn.bv_len;
374 return ber_bvcmp( &m1->mt_op->o_req_ndn, &m2->mt_op->o_req_ndn );
377 /* syncprov_findbase:
378 * finds the true DN of the base of a search (with alias dereferencing) and
379 * checks to make sure the base entry doesn't get replaced with a different
380 * entry (e.g., swapping trees via ModDN, or retargeting an alias). If a
381 * change is detected, any persistent search on this base must be terminated /
383 * On the first call, we just save the DN and entryID. On subsequent calls
384 * we compare the DN and entryID with the saved values.
387 findbase_cb( Operation *op, SlapReply *rs )
389 slap_callback *sc = op->o_callback;
391 if ( rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS ) {
392 fbase_cookie *fc = sc->sc_private;
394 /* If no entryID, we're looking for the first time.
395 * Just store whatever we got.
397 if ( fc->fss->s_eid == NOID ) {
399 fc->fss->s_eid = rs->sr_entry->e_id;
400 ber_dupbv( &fc->fss->s_base, &rs->sr_entry->e_nname );
402 } else if ( rs->sr_entry->e_id == fc->fss->s_eid &&
403 dn_match( &rs->sr_entry->e_nname, &fc->fss->s_base )) {
405 /* OK, the DN is the same and the entryID is the same. Now
406 * see if the fdn resides in the scope.
409 switch ( fc->fss->s_op->ors_scope ) {
410 case LDAP_SCOPE_BASE:
411 fc->fscope = dn_match( fc->fdn, &rs->sr_entry->e_nname );
413 case LDAP_SCOPE_ONELEVEL: {
415 dnParent( fc->fdn, &pdn );
416 fc->fscope = dn_match( &pdn, &rs->sr_entry->e_nname );
418 case LDAP_SCOPE_SUBTREE:
419 fc->fscope = dnIsSuffix( fc->fdn, &rs->sr_entry->e_nname );
421 #ifdef LDAP_SCOPE_SUBORDINATE
422 case LDAP_SCOPE_SUBORDINATE:
423 fc->fscope = dnIsSuffix( fc->fdn, &rs->sr_entry->e_nname ) &&
424 !dn_match( fc->fdn, &rs->sr_entry->e_nname );
430 if ( rs->sr_err != LDAP_SUCCESS ) {
431 Debug( LDAP_DEBUG_ANY, "findbase failed! %d\n", rs->sr_err,0,0 );
437 syncprov_findbase( Operation *op, fbase_cookie *fc )
439 opcookie *opc = op->o_callback->sc_private;
440 slap_overinst *on = opc->son;
441 syncprov_info_t *si = on->on_bi.bi_private;
443 slap_callback cb = {0};
445 SlapReply frs = { REP_RESULT };
450 cb.sc_response = findbase_cb;
453 fop.o_sync_mode &= SLAP_CONTROL_MASK; /* turn off sync mode */
454 fop.o_callback = &cb;
455 fop.o_tag = LDAP_REQ_SEARCH;
456 fop.ors_scope = LDAP_SCOPE_BASE;
457 fop.ors_deref = fc->fss->s_op->ors_deref;
458 fop.ors_limit = NULL;
460 fop.ors_tlimit = SLAP_NO_LIMIT;
461 fop.ors_attrs = slap_anlist_no_attrs;
462 fop.ors_attrsonly = 1;
463 fop.ors_filter = fc->fss->s_op->ors_filter;
464 fop.ors_filterstr = fc->fss->s_op->ors_filterstr;
466 fop.o_req_ndn = fc->fss->s_op->o_req_ndn;
468 fop.o_bd->bd_info = on->on_info->oi_orig;
469 rc = fop.o_bd->be_search( &fop, &frs );
470 fop.o_bd->bd_info = (BackendInfo *)on;
472 if ( fc->fbase ) return LDAP_SUCCESS;
474 /* If entryID has changed, then the base of this search has
475 * changed. Invalidate the psearch.
477 return LDAP_NO_SUCH_OBJECT;
481 * This function has two different purposes, but they both use a search
482 * that filters on entryCSN so they're combined here.
483 * 1: when the current contextCSN is known and we have a sync cookie, we search
484 * for one entry with CSN <= the cookie CSN. (Used to search for =.) If an
485 * entry is found, the cookie CSN is valid, otherwise it is stale.
487 * 2: during a refresh phase, we search for all entries with CSN <= the cookie
488 * CSN, and generate Present records for them. We always collect this result
489 * in SyncID sets, even if there's only one match.
492 #define FIND_PRESENT 2
495 findcsn_cb( Operation *op, SlapReply *rs )
497 slap_callback *sc = op->o_callback;
499 if ( rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS ) {
500 sc->sc_private = (void *)1;
505 /* Build a list of entryUUIDs for sending in a SyncID set */
507 typedef struct fpres_cookie {
513 findpres_cb( Operation *op, SlapReply *rs )
515 slap_callback *sc = op->o_callback;
516 fpres_cookie *pc = sc->sc_private;
517 int ret = SLAP_CB_CONTINUE;
519 if ( rs->sr_type == REP_SEARCH ) {
520 ret = slap_build_syncUUID_set( op, &pc->uuids, rs->sr_entry );
524 if ( pc->num == SLAP_SYNCUUID_SET_SIZE ) {
525 ret = syncprov_sendinfo( op, rs, LDAP_TAG_SYNC_ID_SET, NULL,
527 ber_bvarray_free_x( pc->uuids, op->o_tmpmemctx );
534 } else if ( rs->sr_type == REP_RESULT ) {
537 ret = syncprov_sendinfo( op, rs, LDAP_TAG_SYNC_ID_SET, NULL,
539 ber_bvarray_free_x( pc->uuids, op->o_tmpmemctx );
549 syncprov_findcsn( Operation *op, int mode )
551 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
552 syncprov_info_t *si = on->on_bi.bi_private;
554 slap_callback cb = {0};
556 SlapReply frs = { REP_RESULT };
557 char buf[LDAP_LUTIL_CSNSTR_BUFSIZE + STRLENOF("(entryCSN<=)")];
558 char cbuf[LDAP_LUTIL_CSNSTR_BUFSIZE];
561 AttributeAssertion eq;
563 fpres_cookie pcookie;
565 sync_control *srs = op->o_controls[slap_cids.sc_LDAPsync];
567 if ( srs->sr_state.ctxcsn->bv_len >= LDAP_LUTIL_CSNSTR_BUFSIZE ) {
572 fop.o_sync_mode &= SLAP_CONTROL_MASK; /* turn off sync_mode */
575 if ( mode == FIND_CSN ) {
576 fop.ors_attrsonly = 1;
577 fop.ors_attrs = slap_anlist_no_attrs;
579 cb.sc_private = NULL;
580 cb.sc_response = findcsn_cb;
582 } else if ( mode == FIND_PRESENT ) {
583 fop.ors_attrsonly = 0;
584 fop.ors_attrs = uuid_anlist;
585 fop.ors_slimit = SLAP_NO_LIMIT;
586 /* We want pure entries, not referrals */
587 fop.o_managedsait = SLAP_CONTROL_CRITICAL;
588 cb.sc_private = &pcookie;
589 cb.sc_response = findpres_cb;
591 pcookie.uuids = NULL;
593 cf.f_choice = LDAP_FILTER_LE;
595 cf.f_av_desc = slap_schema.si_ad_entryCSN;
596 cf.f_av_value = *srs->sr_state.ctxcsn;
598 fbuf.bv_len = sprintf( buf, "(entryCSN<=%s)",
599 srs->sr_state.ctxcsn->bv_val );
601 fop.o_callback = &cb;
602 fop.ors_limit = NULL;
603 fop.ors_tlimit = SLAP_NO_LIMIT;
604 fop.ors_filter = &cf;
605 fop.ors_filterstr = fbuf;
607 fop.o_bd->bd_info = on->on_info->oi_orig;
608 rc = fop.o_bd->be_search( &fop, &frs );
609 fop.o_bd->bd_info = (BackendInfo *)on;
611 if ( mode == FIND_CSN ) {
612 if ( cb.sc_private ) return LDAP_SUCCESS;
613 } else if ( mode == FIND_PRESENT ) {
617 /* If matching CSN was not found, invalidate the context. */
618 return LDAP_NO_SUCH_OBJECT;
621 /* Queue a persistent search response if still in Refresh stage */
623 syncprov_qresp( opcookie *opc, syncops *so, int mode )
627 sr = ch_malloc(sizeof(syncres) + opc->suuid.bv_len + 1 +
628 opc->sdn.bv_len + 1 + opc->sndn.bv_len + 1 + opc->sctxcsn.bv_len + 1 );
630 sr->s_dn.bv_val = (char *)(sr + 1);
632 sr->s_isreference = opc->sreference;
633 sr->s_ndn.bv_val = lutil_strcopy( sr->s_dn.bv_val, opc->sdn.bv_val );
634 *(sr->s_ndn.bv_val++) = '\0';
635 sr->s_uuid.bv_val = lutil_strcopy( sr->s_ndn.bv_val, opc->sndn.bv_val );
636 *(sr->s_uuid.bv_val++) = '\0';
637 sr->s_csn.bv_val = lutil_strcopy( sr->s_uuid.bv_val, opc->suuid.bv_val );
642 so->s_restail->s_next = sr;
645 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
649 /* Send a persistent search response */
651 syncprov_sendresp( Operation *op, opcookie *opc, syncops *so, Entry *e, int mode, int queue )
653 slap_overinst *on = opc->son;
654 syncprov_info_t *si = on->on_bi.bi_private;
656 SlapReply rs = { REP_SEARCH };
657 LDAPControl *ctrls[2];
658 struct berval cookie;
660 Attribute a_uuid = {0};
661 Operation sop = *so->s_op;
666 sop.o_tmpmemctx = op->o_tmpmemctx;
668 sop.o_controls = op->o_controls;
670 if ( queue && (so->s_flags & PS_IS_REFRESHING) ) {
671 ldap_pvt_thread_mutex_lock( &so->s_mutex );
672 if ( so->s_flags & PS_IS_REFRESHING )
673 return syncprov_qresp( opc, so, mode );
674 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
678 slap_compose_sync_cookie( op, &cookie, &opc->sctxcsn,
679 so->s_sid, so->s_rid );
681 e_uuid.e_attrs = &a_uuid;
682 a_uuid.a_desc = slap_schema.si_ad_entryUUID;
683 a_uuid.a_nvals = &opc->suuid;
684 rs.sr_err = syncprov_state_ctrl( &sop, &rs, &e_uuid,
685 mode, ctrls, 0, 1, &cookie );
691 if ( opc->sreference ) {
692 rs.sr_ref = get_entry_referrals( &sop, e );
693 send_search_reference( &sop, &rs );
694 ber_bvarray_free( rs.sr_ref );
698 case LDAP_SYNC_MODIFY:
699 rs.sr_attrs = sop.ors_attrs;
700 send_search_entry( &sop, &rs );
702 case LDAP_SYNC_DELETE:
703 e_uuid.e_attrs = NULL;
704 e_uuid.e_name = opc->sdn;
705 e_uuid.e_nname = opc->sndn;
706 rs.sr_entry = &e_uuid;
707 if ( opc->sreference ) {
708 struct berval bv = BER_BVNULL;
710 send_search_reference( &sop, &rs );
712 send_search_entry( &sop, &rs );
718 op->o_tmpfree( rs.sr_ctrls[0], op->o_tmpmemctx );
724 syncprov_free_syncop( syncops *so )
726 syncres *sr, *srnext;
728 ldap_pvt_thread_mutex_lock( &so->s_mutex );
730 if ( so->s_inuse > 0 ) {
731 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
734 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
735 filter_free( so->s_op->ors_filter );
737 ch_free( so->s_base.bv_val );
738 for ( sr=so->s_res; sr; sr=srnext ) {
742 ldap_pvt_thread_mutex_destroy( &so->s_mutex );
747 syncprov_drop_psearch( syncops *so )
749 ldap_pvt_thread_mutex_lock( &so->s_op->o_conn->c_mutex );
750 so->s_op->o_conn->c_n_ops_executing--;
751 so->s_op->o_conn->c_n_ops_completed++;
752 ldap_pvt_thread_mutex_unlock( &so->s_op->o_conn->c_mutex );
753 syncprov_free_syncop( so );
757 syncprov_op_abandon( Operation *op, SlapReply *rs )
759 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
760 syncprov_info_t *si = on->on_bi.bi_private;
761 syncops *so, *soprev;
763 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
764 for ( so=si->si_ops, soprev = (syncops *)&si->si_ops; so;
765 soprev=so, so=so->s_next ) {
766 if ( so->s_op->o_connid == op->o_connid &&
767 so->s_op->o_msgid == op->orn_msgid ) {
768 so->s_op->o_abandon = 1;
769 soprev->s_next = so->s_next;
773 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
775 /* Is this really a Cancel exop? */
776 if ( op->o_tag != LDAP_REQ_ABANDON ) {
777 rs->sr_err = LDAP_CANCELLED;
778 send_ldap_result( so->s_op, rs );
780 syncprov_drop_psearch( so );
782 return SLAP_CB_CONTINUE;
785 /* Find which persistent searches are affected by this operation */
787 syncprov_matchops( Operation *op, opcookie *opc, int saveit )
789 slap_overinst *on = opc->son;
790 syncprov_info_t *si = on->on_bi.bi_private;
793 syncops *ss, *sprev, *snext;
800 fc.fdn = &op->o_req_ndn;
802 if ( op->o_tag == LDAP_REQ_MODRDN && !saveit ) {
804 if ( op->orr_nnewSup ) pdn = *op->orr_nnewSup;
805 else dnParent( fc.fdn, &pdn );
806 build_new_dn( &newdn, &pdn, &op->orr_nnewrdn, op->o_tmpmemctx );
810 if ( op->o_tag != LDAP_REQ_ADD ) {
811 op->o_bd->bd_info = (BackendInfo *)on->on_info;
812 rc = be_entry_get_rw( op, fc.fdn, NULL, NULL, 0, &e );
813 op->o_bd->bd_info = (BackendInfo *)on;
819 /* Never replicate these */
820 if ( is_entry_syncConsumerSubentry( e )) {
824 ber_dupbv_x( &opc->sdn, &e->e_name, op->o_tmpmemctx );
825 ber_dupbv_x( &opc->sndn, &e->e_nname, op->o_tmpmemctx );
826 opc->sreference = is_entry_referral( e );
828 if ( saveit || op->o_tag == LDAP_REQ_ADD ) {
829 a = attr_find( e->e_attrs, slap_schema.si_ad_entryUUID );
831 ber_dupbv_x( &opc->suuid, &a->a_nvals[0], op->o_tmpmemctx );
834 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
835 for (ss = si->si_ops, sprev = (syncops *)&si->si_ops; ss;
836 sprev = ss, ss=snext)
847 /* If the base of the search is missing, signal a refresh */
848 rc = syncprov_findbase( op, &fc );
849 if ( rc != LDAP_SUCCESS ) {
850 SlapReply rs = {REP_RESULT};
851 send_ldap_error( ss->s_op, &rs, LDAP_SYNC_REFRESH_REQUIRED,
852 "search base has changed" );
853 sprev->s_next = snext;
854 syncprov_drop_psearch( ss );
858 /* If we're sending results now, look for this op in old matches */
861 for ( sm=opc->smatches, old=(syncmatches *)&opc->smatches; sm;
862 old=sm, sm=sm->sm_next ) {
863 if ( sm->sm_op == ss ) {
865 old->sm_next = sm->sm_next;
866 op->o_tmpfree( sm, op->o_tmpmemctx );
872 /* check if current o_req_dn is in scope and matches filter */
873 if ( fc.fscope && test_filter( op, e, ss->s_op->ors_filter ) ==
874 LDAP_COMPARE_TRUE ) {
876 sm = op->o_tmpalloc( sizeof(syncmatches), op->o_tmpmemctx );
877 sm->sm_next = opc->smatches;
882 /* if found send UPDATE else send ADD */
883 syncprov_sendresp( op, opc, ss, e,
884 found ? LDAP_SYNC_MODIFY : LDAP_SYNC_ADD, 1 );
886 } else if ( !saveit && found ) {
888 syncprov_sendresp( op, opc, ss, NULL, LDAP_SYNC_DELETE, 1 );
891 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
893 if ( op->o_tag != LDAP_REQ_ADD ) {
894 op->o_bd->bd_info = (BackendInfo *)on->on_info;
895 be_entry_release_r( op, e );
896 op->o_bd->bd_info = (BackendInfo *)on;
899 op->o_tmpfree( fc.fdn->bv_val, op->o_tmpmemctx );
904 syncprov_op_cleanup( Operation *op, SlapReply *rs )
906 slap_callback *cb = op->o_callback;
907 opcookie *opc = cb->sc_private;
908 slap_overinst *on = opc->son;
909 syncprov_info_t *si = on->on_bi.bi_private;
910 syncmatches *sm, *snext;
911 modtarget *mt, mtdummy;
913 for (sm = opc->smatches; sm; sm=snext) {
915 syncprov_free_syncop( sm->sm_op );
916 op->o_tmpfree( sm, op->o_tmpmemctx );
919 /* Remove op from lock table */
921 ldap_pvt_thread_rdwr_rlock( &si->si_mods_rwlock );
922 mt = avl_find( si->si_mods, &mtdummy, sp_avl_cmp );
923 ldap_pvt_thread_rdwr_runlock( &si->si_mods_rwlock );
925 modinst *mi = mt->mt_mods;
927 /* If there are more, promote the next one */
928 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
930 mt->mt_mods = mi->mi_next;
931 mt->mt_op = mt->mt_mods->mi_op;
932 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
934 ldap_pvt_thread_rdwr_wlock( &si->si_mods_rwlock );
935 avl_delete( &si->si_mods, mt, sp_avl_cmp );
936 ldap_pvt_thread_rdwr_wunlock( &si->si_mods_rwlock );
937 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
938 ldap_pvt_thread_mutex_destroy( &mt->mt_mutex );
942 if ( !BER_BVISNULL( &opc->suuid ))
943 op->o_tmpfree( opc->suuid.bv_val, op->o_tmpmemctx );
944 if ( !BER_BVISNULL( &opc->sndn ))
945 op->o_tmpfree( opc->sndn.bv_val, op->o_tmpmemctx );
946 if ( !BER_BVISNULL( &opc->sdn ))
947 op->o_tmpfree( opc->sdn.bv_val, op->o_tmpmemctx );
948 op->o_callback = cb->sc_next;
949 op->o_tmpfree(cb, op->o_tmpmemctx);
953 syncprov_checkpoint( Operation *op, SlapReply *rs, slap_overinst *on )
955 syncprov_info_t *si = on->on_bi.bi_private;
960 slap_callback cb = {0};
964 bv[0] = si->si_ctxcsn;
965 mod.sml_nvalues = NULL;
966 mod.sml_desc = slap_schema.si_ad_contextCSN;
967 mod.sml_op = LDAP_MOD_REPLACE;
970 cb.sc_response = slap_null_cb;
972 opm.o_tag = LDAP_REQ_MODIFY;
973 opm.o_callback = &cb;
974 opm.orm_modlist = &mod;
975 opm.o_req_dn = op->o_bd->be_suffix[0];
976 opm.o_req_ndn = op->o_bd->be_nsuffix[0];
977 orig = opm.o_bd->bd_info;
978 opm.o_bd->bd_info = on->on_info->oi_orig;
979 opm.o_bd->be_modify( &opm, rs );
983 syncprov_op_response( Operation *op, SlapReply *rs )
985 opcookie *opc = op->o_callback->sc_private;
986 slap_overinst *on = opc->son;
987 syncprov_info_t *si = on->on_bi.bi_private;
990 if ( rs->sr_err == LDAP_SUCCESS )
992 struct berval maxcsn;
993 char cbuf[LDAP_LUTIL_CSNSTR_BUFSIZE];
995 /* Update our context CSN */
997 ldap_pvt_thread_mutex_lock( &si->si_csn_mutex );
998 slap_get_commit_csn( op, &maxcsn );
999 if ( !BER_BVISNULL( &maxcsn ) ) {
1000 strcpy( cbuf, maxcsn.bv_val );
1001 if ( ber_bvcmp( &maxcsn, &si->si_ctxcsn ) > 0 ) {
1002 strcpy( si->si_ctxcsnbuf, cbuf );
1003 si->si_ctxcsn.bv_len = maxcsn.bv_len;
1008 if ( si->si_chkops || si->si_chktime ) {
1010 if ( si->si_chkops && si->si_numops >= si->si_chkops ) {
1014 if ( si->si_chktime &&
1015 (op->o_time - si->si_chklast >= si->si_chktime )) {
1017 si->si_chklast = op->o_time;
1020 syncprov_checkpoint( op, rs, on );
1023 ldap_pvt_thread_mutex_unlock( &si->si_csn_mutex );
1025 opc->sctxcsn.bv_len = maxcsn.bv_len;
1026 opc->sctxcsn.bv_val = cbuf;
1028 /* Handle any persistent searches */
1032 case LDAP_REQ_MODIFY:
1033 case LDAP_REQ_MODRDN:
1034 case LDAP_REQ_EXTENDED:
1035 syncprov_matchops( op, opc, 0 );
1037 case LDAP_REQ_DELETE:
1038 /* for each match in opc->smatches:
1041 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1042 for ( sm = opc->smatches; sm; sm=sm->sm_next ) {
1043 if ( sm->sm_op->s_op->o_abandon )
1045 syncprov_sendresp( op, opc, sm->sm_op, NULL,
1046 LDAP_SYNC_DELETE, 1 );
1048 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1054 return SLAP_CB_CONTINUE;
1057 /* We don't use a subentry to store the context CSN any more.
1058 * We expose the current context CSN as an operational attribute
1059 * of the suffix entry.
1062 syncprov_op_compare( Operation *op, SlapReply *rs )
1064 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1065 syncprov_info_t *si = on->on_bi.bi_private;
1066 int rc = SLAP_CB_CONTINUE;
1068 if ( dn_match( &op->o_req_ndn, op->o_bd->be_nsuffix ) &&
1069 op->oq_compare.rs_ava->aa_desc == slap_schema.si_ad_contextCSN )
1073 struct berval bv[2];
1075 e.e_name = op->o_bd->be_suffix[0];
1076 e.e_nname = op->o_bd->be_nsuffix[0];
1078 BER_BVZERO( &bv[1] );
1079 bv[0] = si->si_ctxcsn;
1081 a.a_desc = slap_schema.si_ad_contextCSN;
1083 a.a_nvals = a.a_vals;
1085 ldap_pvt_thread_mutex_lock( &si->si_csn_mutex );
1087 rs->sr_err = access_allowed( op, &e, op->oq_compare.rs_ava->aa_desc,
1088 &op->oq_compare.rs_ava->aa_value, ACL_COMPARE, NULL );
1089 if ( ! rs->sr_err ) {
1090 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1091 goto return_results;
1094 if ( get_assert( op ) &&
1095 ( test_filter( op, &e, get_assertion( op ) ) != LDAP_COMPARE_TRUE ) )
1097 rs->sr_err = LDAP_ASSERTION_FAILED;
1098 goto return_results;
1102 rs->sr_err = LDAP_COMPARE_FALSE;
1104 if ( value_find_ex( op->oq_compare.rs_ava->aa_desc,
1105 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
1106 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
1107 a.a_nvals, &op->oq_compare.rs_ava->aa_value, op->o_tmpmemctx ) == 0 )
1109 rs->sr_err = LDAP_COMPARE_TRUE;
1114 ldap_pvt_thread_mutex_unlock( &si->si_csn_mutex );
1116 send_ldap_result( op, rs );
1118 if( rs->sr_err == LDAP_COMPARE_FALSE || rs->sr_err == LDAP_COMPARE_TRUE ) {
1119 rs->sr_err = LDAP_SUCCESS;
1128 syncprov_op_mod( Operation *op, SlapReply *rs )
1130 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1131 syncprov_info_t *si = on->on_bi.bi_private;
1133 slap_callback *cb = op->o_tmpcalloc(1, sizeof(slap_callback)+
1135 (si->si_ops ? sizeof(modinst) : 0 ),
1137 opcookie *opc = (opcookie *)(cb+1);
1139 cb->sc_response = syncprov_op_response;
1140 cb->sc_cleanup = syncprov_op_cleanup;
1141 cb->sc_private = opc;
1142 cb->sc_next = op->o_callback;
1143 op->o_callback = cb;
1145 /* If there are active persistent searches, lock this operation.
1146 * See seqmod.c for the locking logic on its own.
1149 modtarget *mt, mtdummy;
1152 mi = (modinst *)(opc+1);
1155 /* See if we're already modifying this entry... */
1157 ldap_pvt_thread_rdwr_wlock( &si->si_mods_rwlock );
1158 mt = avl_find( si->si_mods, &mtdummy, sp_avl_cmp );
1160 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
1161 ldap_pvt_thread_rdwr_wunlock( &si->si_mods_rwlock );
1162 mt->mt_tail->mi_next = mi;
1164 /* wait for this op to get to head of list */
1165 while ( mt->mt_mods != mi ) {
1166 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1167 ldap_pvt_thread_yield();
1168 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
1171 /* Record that we're modifying this entry now */
1172 mt = ch_malloc( sizeof(modtarget) );
1175 mt->mt_op = mi->mi_op;
1176 ldap_pvt_thread_mutex_init( &mt->mt_mutex );
1177 avl_insert( &si->si_mods, mt, sp_avl_cmp, avl_dup_error );
1178 ldap_pvt_thread_rdwr_wunlock( &si->si_mods_rwlock );
1181 if ( op->o_tag != LDAP_REQ_ADD )
1182 syncprov_matchops( op, opc, 1 );
1185 return SLAP_CB_CONTINUE;
1189 syncprov_op_extended( Operation *op, SlapReply *rs )
1191 if ( exop_is_write( op ))
1192 return syncprov_op_mod( op, rs );
1194 return SLAP_CB_CONTINUE;
1197 typedef struct searchstate {
1198 slap_overinst *ss_on;
1203 syncprov_search_cleanup( Operation *op, SlapReply *rs )
1206 if ( rs->sr_ctrls ) {
1207 free( rs->sr_ctrls[0] );
1208 op->o_tmpfree( rs->sr_ctrls, op->o_tmpmemctx );
1209 rs->sr_ctrls = NULL;
1216 syncprov_detach_op( Operation *op, syncops *so )
1223 /* count the search attrs */
1224 for (i=0; op->ors_attrs && !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++) {
1225 alen += op->ors_attrs[i].an_name.bv_len + 1;
1227 /* Make a new copy of the operation */
1228 size = sizeof(Operation) + sizeof(Opheader) +
1229 (i ? ( (i+1) * sizeof(AttributeName) + alen) : 0) +
1230 op->o_req_dn.bv_len + 1 +
1231 op->o_req_ndn.bv_len + 1 +
1232 op->o_ndn.bv_len + 1 +
1233 so->s_filterstr.bv_len + 1;
1234 op2 = (Operation *)ch_malloc( size );
1236 op2->o_hdr = (Opheader *)(op2+1);
1237 *op2->o_hdr = *op->o_hdr;
1239 op2->ors_attrs = (AttributeName *)(op2->o_hdr + 1);
1240 ptr = (char *)(op2->ors_attrs+i+1);
1241 for (i=0; !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++) {
1242 op2->ors_attrs[i] = op->ors_attrs[i];
1243 op2->ors_attrs[i].an_name.bv_val = ptr;
1244 ptr = lutil_strcopy( ptr, op->ors_attrs[i].an_name.bv_val ) + 1;
1246 BER_BVZERO( &op2->ors_attrs[i].an_name );
1248 ptr = (char *)(op2->o_hdr + 1);
1250 op2->o_ndn.bv_val = ptr;
1251 ptr = lutil_strcopy(ptr, op->o_ndn.bv_val) + 1;
1252 op2->o_dn = op2->o_ndn;
1253 op2->o_req_dn.bv_val = ptr;
1254 ptr = lutil_strcopy(ptr, op->o_req_dn.bv_val) + 1;
1255 op2->o_req_ndn.bv_val = ptr;
1256 ptr = lutil_strcopy(ptr, op->o_req_ndn.bv_val) + 1;
1257 op2->ors_filterstr.bv_val = ptr;
1258 strcpy( ptr, so->s_filterstr.bv_val );
1259 op2->ors_filterstr.bv_len = so->s_filterstr.bv_len;
1260 op2->ors_filter = str2filter( ptr );
1261 op2->o_controls = NULL;
1262 op2->o_callback = NULL;
1265 /* Increment number of ops so that idletimeout ignores us */
1266 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1267 op->o_conn->c_n_ops_executing++;
1268 op->o_conn->c_n_ops_completed--;
1269 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1273 syncprov_search_response( Operation *op, SlapReply *rs )
1275 searchstate *ss = op->o_callback->sc_private;
1276 slap_overinst *on = ss->ss_on;
1277 syncprov_info_t *si = on->on_bi.bi_private;
1278 sync_control *srs = op->o_controls[slap_cids.sc_LDAPsync];
1280 if ( rs->sr_type == REP_SEARCH || rs->sr_type == REP_SEARCHREF ) {
1282 /* If we got a referral without a referral object, there's
1283 * something missing that we cannot replicate. Just ignore it.
1284 * The consumer will abort because we didn't send the expected
1287 if ( !rs->sr_entry ) {
1288 assert( rs->sr_entry );
1289 Debug( LDAP_DEBUG_ANY, "bogus referral in context\n",0,0,0 );
1290 return SLAP_CB_CONTINUE;
1292 if ( srs->sr_state.ctxcsn ) {
1293 Attribute *a = attr_find( rs->sr_entry->e_attrs,
1294 slap_schema.si_ad_entryCSN );
1295 /* Don't send the ctx entry twice */
1296 if ( bvmatch( &a->a_nvals[0], srs->sr_state.ctxcsn ))
1297 return LDAP_SUCCESS;
1299 rs->sr_ctrls = op->o_tmpalloc( sizeof(LDAPControl *)*2,
1301 rs->sr_ctrls[1] = NULL;
1302 rs->sr_err = syncprov_state_ctrl( op, rs, rs->sr_entry,
1303 LDAP_SYNC_ADD, rs->sr_ctrls, 0, 0, NULL );
1304 } else if ( rs->sr_type == REP_RESULT && rs->sr_err == LDAP_SUCCESS ) {
1305 struct berval cookie;
1307 slap_compose_sync_cookie( op, &cookie,
1308 &op->ors_filter->f_and->f_ava->aa_value,
1309 srs->sr_state.sid, srs->sr_state.rid );
1311 /* Is this a regular refresh? */
1313 rs->sr_ctrls = op->o_tmpalloc( sizeof(LDAPControl *)*2,
1315 rs->sr_ctrls[1] = NULL;
1316 rs->sr_err = syncprov_done_ctrl( op, rs, rs->sr_ctrls,
1317 0, 1, &cookie, LDAP_SYNC_REFRESH_PRESENTS );
1320 /* It's RefreshAndPersist, transition to Persist phase */
1321 syncprov_sendinfo( op, rs, rs->sr_nentries ?
1322 LDAP_TAG_SYNC_REFRESH_PRESENT : LDAP_TAG_SYNC_REFRESH_DELETE,
1323 &cookie, 1, NULL, 0 );
1324 /* Flush any queued persist messages */
1325 if ( ss->ss_so->s_res ) {
1326 syncres *sr, *srnext;
1331 ldap_pvt_thread_mutex_lock( &ss->ss_so->s_mutex );
1333 for (sr = ss->ss_so->s_res; sr; sr=srnext) {
1334 int rc = LDAP_SUCCESS;
1335 srnext = sr->s_next;
1337 opc.sndn = sr->s_ndn;
1338 opc.suuid = sr->s_uuid;
1339 opc.sctxcsn = sr->s_csn;
1340 opc.sreference = sr->s_isreference;
1343 if ( sr->s_mode != LDAP_SYNC_DELETE ) {
1344 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1345 rc = be_entry_get_rw( op, &opc.sndn, NULL, NULL, 0, &e );
1346 op->o_bd->bd_info = (BackendInfo *)on;
1348 if ( rc == LDAP_SUCCESS )
1349 syncprov_sendresp( op, &opc, ss->ss_so, e,
1353 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1354 be_entry_release_r( op, e );
1355 op->o_bd->bd_info = (BackendInfo *)on;
1359 ss->ss_so->s_res = NULL;
1360 ss->ss_so->s_restail = NULL;
1363 /* Turn off the refreshing flag */
1364 ss->ss_so->s_flags ^= PS_IS_REFRESHING;
1366 ldap_pvt_thread_mutex_unlock( &ss->ss_so->s_mutex );
1368 /* Detach this Op from frontend control */
1369 syncprov_detach_op( op, ss->ss_so );
1371 return LDAP_SUCCESS;
1375 return SLAP_CB_CONTINUE;
1379 syncprov_op_search( Operation *op, SlapReply *rs )
1381 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1382 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
1384 int gotstate = 0, nochange = 0;
1385 Filter *fand, *fava;
1386 syncops *sop = NULL;
1390 if ( !(op->o_sync_mode & SLAP_SYNC_REFRESH) ) return SLAP_CB_CONTINUE;
1392 if ( op->ors_deref & LDAP_DEREF_SEARCHING ) {
1393 send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR, "illegal value for derefAliases" );
1397 srs = op->o_controls[slap_cids.sc_LDAPsync];
1399 /* If this is a persistent search, set it up right away */
1400 if ( op->o_sync_mode & SLAP_SYNC_PERSIST ) {
1410 so.s_flags = PS_IS_REFRESHING;
1411 /* syncprov_findbase expects to be called as a callback... */
1412 sc.sc_private = &opc;
1414 cb = op->o_callback;
1415 op->o_callback = ≻
1416 rs->sr_err = syncprov_findbase( op, &fc );
1417 op->o_callback = cb;
1419 if ( rs->sr_err != LDAP_SUCCESS ) {
1420 send_ldap_result( op, rs );
1423 sop = ch_malloc( sizeof( syncops ));
1425 ldap_pvt_thread_mutex_init( &sop->s_mutex );
1426 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1427 sop->s_sid = srs->sr_state.sid;
1428 sop->s_rid = srs->sr_state.rid;
1429 sop->s_next = si->si_ops;
1432 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1435 /* If we have a cookie, handle the PRESENT lookups
1437 if ( srs->sr_state.ctxcsn ) {
1438 /* Is the CSN in a valid format? */
1439 if ( srs->sr_state.ctxcsn->bv_len >= LDAP_LUTIL_CSNSTR_BUFSIZE ) {
1440 send_ldap_error( op, rs, LDAP_OTHER, "invalid sync cookie" );
1443 /* Is the CSN still present in the database? */
1444 if ( syncprov_findcsn( op, FIND_CSN ) != LDAP_SUCCESS ) {
1445 /* No, so a reload is required */
1446 #if 0 /* the consumer doesn't seem to send this hint */
1447 if ( op->o_sync_rhint == 0 ) {
1448 send_ldap_error( op, rs, LDAP_SYNC_REFRESH_REQUIRED, "sync cookie is stale" );
1454 /* If just Refreshing and nothing has changed, shortcut it */
1455 if ( bvmatch( srs->sr_state.ctxcsn, &si->si_ctxcsn )) {
1457 if ( !(op->o_sync_mode & SLAP_SYNC_PERSIST) ) {
1458 LDAPControl *ctrls[2];
1462 syncprov_done_ctrl( op, rs, ctrls, 0, 0,
1463 NULL, LDAP_SYNC_REFRESH_DELETES );
1464 rs->sr_ctrls = ctrls;
1465 rs->sr_err = LDAP_SUCCESS;
1466 send_ldap_result( op, rs );
1467 rs->sr_ctrls = NULL;
1472 /* If context has changed, check for Present UUIDs */
1473 if ( syncprov_findcsn( op, FIND_PRESENT ) != LDAP_SUCCESS ) {
1474 send_ldap_result( op, rs );
1480 /* Append CSN range to search filter, save original filter
1481 * for persistent search evaluation
1484 sop->s_filterstr= op->ors_filterstr;
1487 fand = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
1488 fand->f_choice = LDAP_FILTER_AND;
1489 fand->f_next = NULL;
1490 fava = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
1491 fava->f_choice = LDAP_FILTER_LE;
1492 fava->f_ava = op->o_tmpalloc( sizeof(AttributeAssertion), op->o_tmpmemctx );
1493 fava->f_ava->aa_desc = slap_schema.si_ad_entryCSN;
1494 ldap_pvt_thread_mutex_lock( &si->si_csn_mutex );
1495 ber_dupbv_x( &fava->f_ava->aa_value, &si->si_ctxcsn, op->o_tmpmemctx );
1496 ldap_pvt_thread_mutex_unlock( &si->si_csn_mutex );
1499 fava->f_next = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
1500 fava = fava->f_next;
1501 fava->f_choice = LDAP_FILTER_GE;
1502 fava->f_ava = op->o_tmpalloc( sizeof(AttributeAssertion), op->o_tmpmemctx );
1503 fava->f_ava->aa_desc = slap_schema.si_ad_entryCSN;
1504 ber_dupbv_x( &fava->f_ava->aa_value, srs->sr_state.ctxcsn, op->o_tmpmemctx );
1506 fava->f_next = op->ors_filter;
1507 op->ors_filter = fand;
1508 filter2bv_x( op, op->ors_filter, &op->ors_filterstr );
1511 /* Let our callback add needed info to returned entries */
1512 cb = op->o_tmpcalloc(1, sizeof(slap_callback)+sizeof(searchstate), op->o_tmpmemctx);
1513 ss = (searchstate *)(cb+1);
1516 cb->sc_response = syncprov_search_response;
1517 cb->sc_cleanup = syncprov_search_cleanup;
1518 cb->sc_private = ss;
1519 cb->sc_next = op->o_callback;
1520 op->o_callback = cb;
1522 #if 0 /* I don't think we need to shortcircuit back-bdb any more */
1523 op->o_sync_mode &= SLAP_CONTROL_MASK;
1526 /* If this is a persistent search and no changes were reported during
1527 * the refresh phase, just invoke the response callback to transition
1528 * us into persist phase
1531 rs->sr_err = LDAP_SUCCESS;
1532 rs->sr_nentries = 0;
1533 send_ldap_result( op, rs );
1536 return SLAP_CB_CONTINUE;
1540 syncprov_operational(
1544 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1545 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
1547 if ( rs->sr_entry &&
1548 dn_match( &rs->sr_entry->e_nname, op->o_bd->be_nsuffix )) {
1550 if ( SLAP_OPATTRS( rs->sr_attr_flags ) ||
1551 ad_inlist( slap_schema.si_ad_contextCSN, rs->sr_attrs )) {
1552 Attribute *a, **ap = NULL;
1554 for ( a=rs->sr_entry->e_attrs; a; a=a->a_next ) {
1555 if ( a->a_desc == slap_schema.si_ad_contextCSN )
1560 for ( ap = &rs->sr_operational_attrs; *ap; ap=&(*ap)->a_next );
1562 a = ch_malloc( sizeof(Attribute));
1563 a->a_desc = slap_schema.si_ad_contextCSN;
1564 a->a_vals = ch_malloc( 2 * sizeof(struct berval));
1565 a->a_vals[1].bv_val = NULL;
1566 a->a_nvals = a->a_vals;
1572 ldap_pvt_thread_mutex_lock( &si->si_csn_mutex );
1574 strcpy( a->a_vals[0].bv_val, si->si_ctxcsnbuf );
1576 ber_dupbv( &a->a_vals[0], &si->si_ctxcsn );
1578 ldap_pvt_thread_mutex_unlock( &si->si_csn_mutex );
1581 return SLAP_CB_CONTINUE;
1593 slap_overinst *on = (slap_overinst *)be->bd_info;
1594 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
1596 if ( strcasecmp( argv[ 0 ], "syncprov-checkpoint" ) == 0 ) {
1598 fprintf( stderr, "%s: line %d: wrong number of arguments in "
1599 "\"syncprov-checkpoint <ops> <minutes>\"\n", fname, lineno );
1602 si->si_chkops = atoi( argv[1] );
1603 si->si_chktime = atoi( argv[2] ) * 60;
1608 return SLAP_CONF_UNKNOWN;
1611 /* Cheating - we have no thread pool context for these functions,
1614 typedef struct thread_keys {
1617 ldap_pvt_thread_pool_keyfree_t *xfree;
1621 /* A fake thread context */
1622 static thread_keys thrctx[MAXKEYS];
1624 /* Read any existing contextCSN from the underlying db.
1625 * Then search for any entries newer than that. If no value exists,
1626 * just generate it. Cache whatever result.
1633 slap_overinst *on = (slap_overinst *) be->bd_info;
1634 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
1636 char opbuf[OPERATION_BUFFER_SIZE];
1637 Operation *op = (Operation *)opbuf;
1642 memset(opbuf, 0, sizeof(opbuf));
1643 op->o_hdr = (Opheader *)(op+1);
1645 op->o_dn = be->be_rootdn;
1646 op->o_ndn = be->be_rootndn;
1647 op->o_threadctx = thrctx;
1648 op->o_tmpmfuncs = &ch_mfuncs;
1650 op->o_bd->bd_info = on->on_info->oi_orig;
1651 rc = be_entry_get_rw( op, be->be_nsuffix, NULL,
1652 slap_schema.si_ad_contextCSN, 0, &e );
1655 a = attr_find( e->e_attrs, slap_schema.si_ad_contextCSN );
1657 si->si_ctxcsn.bv_len = a->a_nvals[0].bv_len;
1658 if ( si->si_ctxcsn.bv_len >= sizeof(si->si_ctxcsnbuf ))
1659 si->si_ctxcsn.bv_len = sizeof(si->si_ctxcsnbuf)-1;
1660 strncpy( si->si_ctxcsnbuf, a->a_nvals[0].bv_val,
1661 si->si_ctxcsn.bv_len );
1662 si->si_ctxcsnbuf[si->si_ctxcsn.bv_len] = '\0';
1664 be_entry_release_r( op, e );
1667 if ( BER_BVISEMPTY( &si->si_ctxcsn ) ) {
1668 slap_get_csn( op, si->si_ctxcsnbuf, sizeof(si->si_ctxcsnbuf),
1669 &si->si_ctxcsn, 0 );
1672 op->o_bd->bd_info = (BackendInfo *)on;
1676 /* Write the current contextCSN into the underlying db.
1683 slap_overinst *on = (slap_overinst *) be->bd_info;
1684 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
1687 if ( si->si_numops ) {
1689 char opbuf[OPERATION_BUFFER_SIZE];
1690 Operation *op = (Operation *)opbuf;
1691 SlapReply rs = {REP_RESULT};
1693 connection_fake_init( &conn, op, thrctx );
1695 op->o_dn = be->be_rootdn;
1696 op->o_ndn = be->be_rootndn;
1697 syncprov_checkpoint( op, &rs, on );
1699 for ( i=0; thrctx[i].key; i++) {
1700 if ( thrctx[i].xfree )
1701 thrctx[i].xfree( thrctx[i].key, thrctx[i].data );
1702 thrctx[i].key = NULL;
1713 slap_overinst *on = (slap_overinst *)be->bd_info;
1714 syncprov_info_t *si;
1716 si = ch_calloc(1, sizeof(syncprov_info_t));
1717 on->on_bi.bi_private = si;
1718 ldap_pvt_thread_mutex_init( &si->si_csn_mutex );
1719 ldap_pvt_thread_mutex_init( &si->si_ops_mutex );
1720 ldap_pvt_thread_rdwr_init( &si->si_mods_rwlock );
1721 si->si_ctxcsn.bv_val = si->si_ctxcsnbuf;
1723 csn_anlist[0].an_desc = slap_schema.si_ad_entryCSN;
1724 csn_anlist[0].an_name = slap_schema.si_ad_entryCSN->ad_cname;
1726 uuid_anlist[0].an_desc = slap_schema.si_ad_entryUUID;
1727 uuid_anlist[0].an_name = slap_schema.si_ad_entryUUID->ad_cname;
1733 syncprov_db_destroy(
1737 slap_overinst *on = (slap_overinst *)be->bd_info;
1738 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
1741 ldap_pvt_thread_rdwr_destroy( &si->si_mods_rwlock );
1742 ldap_pvt_thread_mutex_destroy( &si->si_ops_mutex );
1743 ldap_pvt_thread_mutex_destroy( &si->si_csn_mutex );
1750 static int syncprov_parseCtrl (
1759 struct berval cookie = BER_BVNULL;
1763 if ( op->o_sync != SLAP_CONTROL_NONE ) {
1764 rs->sr_text = "Sync control specified multiple times";
1765 return LDAP_PROTOCOL_ERROR;
1768 if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
1769 rs->sr_text = "Sync control specified with pagedResults control";
1770 return LDAP_PROTOCOL_ERROR;
1773 if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
1774 rs->sr_text = "Sync control value is empty (or absent)";
1775 return LDAP_PROTOCOL_ERROR;
1778 /* Parse the control value
1779 * syncRequestValue ::= SEQUENCE {
1784 * refreshAndPersist (3)
1786 * cookie syncCookie OPTIONAL
1790 ber = ber_init( &ctrl->ldctl_value );
1792 rs->sr_text = "internal error";
1796 if ( (tag = ber_scanf( ber, "{i" /*}*/, &mode )) == LBER_ERROR ) {
1797 rs->sr_text = "Sync control : mode decoding error";
1798 return LDAP_PROTOCOL_ERROR;
1802 case LDAP_SYNC_REFRESH_ONLY:
1803 mode = SLAP_SYNC_REFRESH;
1805 case LDAP_SYNC_REFRESH_AND_PERSIST:
1806 mode = SLAP_SYNC_REFRESH_AND_PERSIST;
1809 rs->sr_text = "Sync control : unknown update mode";
1810 return LDAP_PROTOCOL_ERROR;
1813 tag = ber_peek_tag( ber, &len );
1815 if ( tag == LDAP_TAG_SYNC_COOKIE ) {
1816 if (( ber_scanf( ber, /*{*/ "o", &cookie )) == LBER_ERROR ) {
1817 rs->sr_text = "Sync control : cookie decoding error";
1818 return LDAP_PROTOCOL_ERROR;
1821 if ( tag == LDAP_TAG_RELOAD_HINT ) {
1822 if (( ber_scanf( ber, /*{*/ "b", &rhint )) == LBER_ERROR ) {
1823 rs->sr_text = "Sync control : rhint decoding error";
1824 return LDAP_PROTOCOL_ERROR;
1827 if (( ber_scanf( ber, /*{*/ "}")) == LBER_ERROR ) {
1828 rs->sr_text = "Sync control : decoding error";
1829 return LDAP_PROTOCOL_ERROR;
1831 sr = op->o_tmpcalloc( 1, sizeof(struct sync_control), op->o_tmpmemctx );
1832 sr->sr_rhint = rhint;
1833 if (!BER_BVISNULL(&cookie)) {
1834 ber_bvarray_add( &sr->sr_state.octet_str, &cookie );
1835 slap_parse_sync_cookie( &sr->sr_state );
1838 op->o_controls[slap_cids.sc_LDAPsync] = sr;
1840 (void) ber_free( ber, 1 );
1842 op->o_sync = ctrl->ldctl_iscritical
1843 ? SLAP_CONTROL_CRITICAL
1844 : SLAP_CONTROL_NONCRITICAL;
1846 op->o_sync_mode |= mode; /* o_sync_mode shares o_sync */
1848 return LDAP_SUCCESS;
1851 /* This overlay is set up for dynamic loading via moduleload. For static
1852 * configuration, you'll need to arrange for the slap_overinst to be
1853 * initialized and registered by some other function inside slapd.
1856 static slap_overinst syncprov;
1863 rc = register_supported_control( LDAP_CONTROL_SYNC,
1864 SLAP_CTRL_HIDE|SLAP_CTRL_SEARCH, NULL,
1865 syncprov_parseCtrl, &slap_cids.sc_LDAPsync );
1866 if ( rc != LDAP_SUCCESS ) {
1867 fprintf( stderr, "Failed to register control %d\n", rc );
1871 syncprov.on_bi.bi_type = "syncprov";
1872 syncprov.on_bi.bi_db_init = syncprov_db_init;
1873 syncprov.on_bi.bi_db_config = syncprov_db_config;
1874 syncprov.on_bi.bi_db_destroy = syncprov_db_destroy;
1875 syncprov.on_bi.bi_db_open = syncprov_db_open;
1876 syncprov.on_bi.bi_db_close = syncprov_db_close;
1878 syncprov.on_bi.bi_op_abandon = syncprov_op_abandon;
1879 syncprov.on_bi.bi_op_cancel = syncprov_op_abandon;
1881 syncprov.on_bi.bi_op_add = syncprov_op_mod;
1882 syncprov.on_bi.bi_op_compare = syncprov_op_compare;
1883 syncprov.on_bi.bi_op_delete = syncprov_op_mod;
1884 syncprov.on_bi.bi_op_modify = syncprov_op_mod;
1885 syncprov.on_bi.bi_op_modrdn = syncprov_op_mod;
1886 syncprov.on_bi.bi_op_search = syncprov_op_search;
1887 syncprov.on_bi.bi_extended = syncprov_op_extended;
1888 syncprov.on_bi.bi_operational = syncprov_operational;
1890 return overlay_register( &syncprov );
1893 #if SLAPD_OVER_SYNCPROV == SLAPD_MOD_DYNAMIC
1895 init_module( int argc, char *argv[] )
1897 return syncprov_init();
1899 #endif /* SLAPD_OVER_SYNCPROV == SLAPD_MOD_DYNAMIC */
1901 #endif /* defined(SLAPD_OVER_SYNCPROV) */