ITS#6024 Don't send cookies without csn.

diff --git a/servers/slapd/overlays/syncprov.c b/servers/slapd/overlays/syncprov.c
index f1af8c9e5890207aa7bbf1d759bb7dc252b97196..d4bbeaab4fbc992fcc13c96bd5e97703957fa641 100644 (file)
--- a/servers/slapd/overlays/syncprov.c
+++ b/servers/slapd/overlays/syncprov.c
@@ -775,7 +775,7 @@ syncprov_sendresp( Operation *op, opcookie *opc, syncops *so,
 
        SlapReply rs = { REP_SEARCH };
        LDAPControl *ctrls[2];
-       struct berval cookie, csns[2];
+       struct berval cookie = BER_BVNULL, csns[2];
        Entry e_uuid = {0};
        Attribute a_uuid = {0};
 
@@ -783,18 +783,22 @@ syncprov_sendresp( Operation *op, opcookie *opc, syncops *so,
                return SLAPD_ABANDON;
 
        ctrls[1] = NULL;
-       csns[0] = opc->sctxcsn;
-       BER_BVZERO( &csns[1] );
-       slap_compose_sync_cookie( op, &cookie, csns, so->s_rid, slap_serverID ? slap_serverID : -1 );
+       if ( !BER_BVISNULL( &opc->sctxcsn )) {
+               csns[0] = opc->sctxcsn;
+               BER_BVZERO( &csns[1] );
+               slap_compose_sync_cookie( op, &cookie, csns, so->s_rid, slap_serverID ? slap_serverID : -1 );
+       }
 
 #ifdef LDAP_DEBUG
-       if ( so->s_sid > 0 ) {
-               Debug( LDAP_DEBUG_SYNC, "syncprov_sendresp: to=%03x, cookie=%s\n",
-                       so->s_sid, cookie.bv_val, 0 );
-       } else {
-               Debug( LDAP_DEBUG_SYNC, "syncprov_sendresp: cookie=%s\n",
-                       cookie.bv_val, 0, 0 );
-       }
+       if ( !BER_BVISNULL( &cookie )) {
+               if ( so->s_sid > 0 ) {
+                       Debug( LDAP_DEBUG_SYNC, "syncprov_sendresp: to=%03x, cookie=%s\n",
+                               so->s_sid, cookie.bv_val , 0 );
+               } else {
+                       Debug( LDAP_DEBUG_SYNC, "syncprov_sendresp: cookie=%s\n",
+                               cookie.bv_val, 0, 0 );
+               }
+       }               
 #endif
 
        e_uuid.e_attrs = &a_uuid;
@@ -802,7 +806,9 @@ syncprov_sendresp( Operation *op, opcookie *opc, syncops *so,
        a_uuid.a_nvals = &opc->suuid;
        rs.sr_err = syncprov_state_ctrl( op, &rs, &e_uuid,
                mode, ctrls, 0, 1, &cookie );
-       op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
+       if ( !BER_BVISNULL( &cookie )) {
+               op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
+       }
 
        rs.sr_ctrls = ctrls;
        op->o_bd->bd_info = (BackendInfo *)on->on_info;
@@ -2203,9 +2209,10 @@ syncprov_search_response( Operation *op, SlapReply *rs )
                                LDAP_SYNC_ADD, rs->sr_ctrls, 0, 0, NULL );
                }
        } else if ( rs->sr_type == REP_RESULT && rs->sr_err == LDAP_SUCCESS ) {
-               struct berval cookie;
+               struct berval cookie = BER_BVNULL;
 
-               if ( ss->ss_flags & SS_CHANGED ) {
+               if ( ( ss->ss_flags & SS_CHANGED ) &&
+                       ss->ss_ctxcsn && !BER_BVISNULL( &ss->ss_ctxcsn[0] )) {
                        slap_compose_sync_cookie( op, &cookie, ss->ss_ctxcsn,
                                srs->sr_state.rid, slap_serverID ? slap_serverID : -1 );
 
@@ -2229,7 +2236,7 @@ syncprov_search_response( Operation *op, SlapReply *rs )
                                LDAP_TAG_SYNC_REFRESH_PRESENT : LDAP_TAG_SYNC_REFRESH_DELETE,
                                ( ss->ss_flags & SS_CHANGED ) ? &cookie : NULL,
                                1, NULL, 0 );
-                       if ( ss->ss_flags & SS_CHANGED )
+                       if ( !BER_BVISNULL( &cookie ))
                                op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
 
                        /* Detach this Op from frontend control */