+static int
+check_syncprov(
+ Operation *op,
+ syncinfo_t *si )
+{
+ AttributeName at[2];
+ Attribute a = {0};
+ Entry e = {0};
+ SlapReply rs = {0};
+ int i, j, changed = 0;
+
+ /* Look for contextCSN from syncprov overlay. If
+ * there's no overlay, this will be a no-op. That means
+ * this is a pure consumer, so local changes will not be
+ * allowed, and all changes will already be reflected in
+ * the cookieState.
+ */
+ a.a_desc = slap_schema.si_ad_contextCSN;
+ e.e_attrs = &a;
+ e.e_name = op->o_bd->be_suffix[0];
+ e.e_nname = op->o_bd->be_nsuffix[0];
+ at[0].an_name = a.a_desc->ad_cname;
+ at[0].an_desc = a.a_desc;
+ BER_BVZERO( &at[1].an_name );
+ rs.sr_entry = &e;
+ rs.sr_flags = REP_ENTRY_MODIFIABLE;
+ rs.sr_attrs = at;
+ op->o_req_dn = e.e_name;
+ op->o_req_ndn = e.e_nname;
+
+ ldap_pvt_thread_mutex_lock( &si->si_cookieState->cs_mutex );
+ i = backend_operational( op, &rs );
+ if ( i == LDAP_SUCCESS && a.a_nvals ) {
+ int num = a.a_numvals;
+ /* check for differences */
+ if ( num != si->si_cookieState->cs_num ) {
+ changed = 1;
+ } else {
+ for ( i=0; i<num; i++ ) {
+ if ( ber_bvcmp( &a.a_nvals[i],
+ &si->si_cookieState->cs_vals[i] )) {
+ changed = 1;
+ break;
+ }
+ }
+ }
+ if ( changed ) {
+ ber_bvarray_free( si->si_cookieState->cs_vals );
+ ch_free( si->si_cookieState->cs_sids );
+ si->si_cookieState->cs_num = num;
+ si->si_cookieState->cs_vals = a.a_nvals;
+ si->si_cookieState->cs_sids = slap_parse_csn_sids( a.a_nvals,
+ num, NULL );
+ si->si_cookieState->cs_age++;
+ } else {
+ ber_bvarray_free( a.a_nvals );
+ }
+ ber_bvarray_free( a.a_vals );
+ }
+ /* See if the cookieState has changed due to anything outside
+ * this particular consumer. That includes other consumers in
+ * the same context, or local changes detected above.
+ */
+ if ( si->si_cookieState->cs_num > 0 && si->si_cookieAge !=
+ si->si_cookieState->cs_age ) {
+ if ( !si->si_syncCookie.numcsns ) {
+ ber_bvarray_free( si->si_syncCookie.ctxcsn );
+ ber_bvarray_dup_x( &si->si_syncCookie.ctxcsn,
+ si->si_cookieState->cs_vals, NULL );
+ changed = 1;
+ } else {
+ for (i=0; !BER_BVISNULL( &si->si_syncCookie.ctxcsn[i] ); i++) {
+ /* bogus, just dup everything */
+ if ( si->si_syncCookie.sids[i] == -1 ) {
+ ber_bvarray_free( si->si_syncCookie.ctxcsn );
+ ber_bvarray_dup_x( &si->si_syncCookie.ctxcsn,
+ si->si_cookieState->cs_vals, NULL );
+ changed = 1;
+ break;
+ }
+ for (j=0; j<si->si_cookieState->cs_num; j++) {
+ if ( si->si_syncCookie.sids[i] !=
+ si->si_cookieState->cs_sids[j] )
+ continue;
+ if ( bvmatch( &si->si_syncCookie.ctxcsn[i],
+ &si->si_cookieState->cs_vals[j] ))
+ break;
+ ber_bvreplace( &si->si_syncCookie.ctxcsn[i],
+ &si->si_cookieState->cs_vals[j] );
+ changed = 1;
+ break;
+ }
+ }
+ }
+ }
+ if ( changed ) {
+ si->si_cookieAge = si->si_cookieState->cs_age;
+ ch_free( si->si_syncCookie.octet_str.bv_val );
+ slap_compose_sync_cookie( NULL, &si->si_syncCookie.octet_str,
+ si->si_syncCookie.ctxcsn, si->si_syncCookie.rid,
+ si->si_syncCookie.sid );
+ }
+ ldap_pvt_thread_mutex_unlock( &si->si_cookieState->cs_mutex );
+ return changed;
+}
+