]> git.sur5r.net Git - openldap/blobdiff - servers/slapd/syncrepl.c
declare overlays_init()
[openldap] / servers / slapd / syncrepl.c
index 248ff3265821a5f6d6566d53d32e46bf97f93afd..0cd130e123de9513aa25cf56a33ee5fd6d689f70 100644 (file)
@@ -1,33 +1,19 @@
+/* syncrepl.c -- Replication Engine which uses the LDAP Sync protocol */
 /* $OpenLDAP$ */
-/*
- * Replication Engine which uses the LDAP Sync protocol
- */
-/*
- * Copyright 2003 The OpenLDAP Foundation, All Rights Reserved.
- * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
- */
-/* Copyright (c) 2003 by International Business Machines, Inc.
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
  *
- * International Business Machines, Inc. (hereinafter called IBM) grants
- * permission under its copyrights to use, copy, modify, and distribute this
- * Software with or without fee, provided that the above copyright notice and
- * all paragraphs of this notice appear in all copies, and that the name of IBM
- * not be used in connection with the marketing of any product incorporating
- * the Software or modifications thereof, without specific, written prior
- * permission.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE.  IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL,
- * DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING
- * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN
- * IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES.
- */
-/* Modified by Howard Chu
+ * Copyright 2003 The OpenLDAP Foundation.
+ * Portions Copyright 2003 by IBM Corporation.
+ * Portions Copyright 2003 by Howard Chu, Symas Corporation.
+ * All rights reserved.
  *
- * Copyright (c) 2003 by Howard Chu, Symas Corporation
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
  *
- * Modifications provided under the terms of the OpenLDAP public license.
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
  */
 
 #include "portable.h"
 
 #include "ldap_rq.h"
 
-#ifdef LDAP_SLAPI
-#include "slapi.h"
-#endif
-
 #define SYNCREPL_STR   "syncreplxxx"
 #define CN_STR "cn="
 
 static const struct berval slap_syncrepl_bvc = BER_BVC(SYNCREPL_STR);
 static const struct berval slap_syncrepl_cn_bvc = BER_BVC(CN_STR SYNCREPL_STR);
 
-static void
-syncrepl_del_nonpresent( LDAP *, Operation *, syncinfo_t * );
+static int syncuuid_cmp( const void *, const void * );
+static void avl_ber_bvfree( void * );
+static void syncrepl_del_nonpresent( Operation *, syncinfo_t * );
 
 /* callback functions */
 static int dn_callback( struct slap_op *, struct slap_rep * );
@@ -129,22 +112,24 @@ init_syncrepl(syncinfo_t *si)
 static int
 ldap_sync_search(
        syncinfo_t *si,
-       LDAP *ld,
-       void *ctx,
-       int *msgidp )
+       void *ctx
+)
 {
        BerElementBuffer berbuf;
        BerElement *ber = (BerElement *)&berbuf;
        LDAPControl c[2], *ctrls[3];
        struct timeval timeout;
+       ber_int_t       msgid;
        int rc;
 
        /* setup LDAP SYNC control */
        ber_init2( ber, NULL, LBER_USE_DER );
        ber_set_option( ber, LBER_OPT_BER_MEMCTX, &ctx );
 
-       if ( si->si_syncCookie ) {
-               ber_printf( ber, "{eO}", abs(si->si_type), si->si_syncCookie );
+       if ( si->si_syncCookie.octet_str &&
+                si->si_syncCookie.octet_str[0].bv_val ) {
+               ber_printf( ber, "{eO}", abs(si->si_type),
+                                       &si->si_syncCookie.octet_str[0] );
        } else {
                ber_printf( ber, "{e}", abs(si->si_type) );
        }
@@ -171,10 +156,10 @@ ldap_sync_search(
        timeout.tv_sec = si->si_tlimit > 0 ? si->si_tlimit : 1;
        timeout.tv_usec = 0;
 
-       rc = ldap_search_ext( ld, si->si_base.bv_val, si->si_scope,
+       rc = ldap_search_ext( si->si_ld, si->si_base.bv_val, si->si_scope,
                si->si_filterstr.bv_val, si->si_attrs, si->si_attrsonly,
                ctrls, NULL, si->si_tlimit < 0 ? NULL : &timeout,
-               si->si_slimit, msgidp );
+               si->si_slimit, &msgid );
        ber_free_buf( ber );
 
        return rc;
@@ -182,108 +167,48 @@ ldap_sync_search(
 
 static const Listener dummy_list = { {0, ""}, {0, ""} };
 
-void *
-do_syncrepl(
-       void    *ctx,
-       void    *arg )
+static int
+do_syncrep1(
+       Operation *op,
+       syncinfo_t *si )
 {
-       struct re_s* rtask = arg;
-       syncinfo_t *si = ( syncinfo_t * ) rtask->arg;
-       Backend *be;
-
-       LDAPControl     **rctrls = NULL;
-       LDAPControl     *rctrlp = NULL;
-
-       BerElement      *res_ber = NULL;
-
-       LDAP    *ld = NULL;
-       LDAPMessage     *res = NULL;
-       LDAPMessage     *msg = NULL;
-
-       ber_int_t       msgid;
-
-       char            *retoid = NULL;
-       struct berval   *retdata = NULL;
-
-       int             sync_info_arrived = 0;
-       Entry           *entry = NULL;
-
-       int             syncstate;
-       struct berval   syncUUID = { 0, NULL };
-       struct berval   syncCookie = { 0, NULL };
-       struct berval   syncCookie_req = { 0, NULL };
-
        int     rc;
-       int     err;
-       ber_len_t       len;
-       int     syncinfo_arrived = 0;
-
-       Connection conn = {0};
-       Operation op = {0};
-       slap_callback   cb;
-
-       void *memctx = NULL;
-       ber_len_t memsiz;
-       
-       int rc_efree;
-
-       struct berval psub = { 0, NULL };
-       Modifications   *modlist = NULL;
+       int cmdline_cookie_found = 0;
 
        char syncrepl_cbuf[sizeof(CN_STR SYNCREPL_STR)];
        struct berval syncrepl_cn_bv;
+       struct sync_cookie      *sc = NULL;
+       struct sync_cookie      syncCookie = { NULL, -1, NULL };
+       struct berval   *psub;
 
-       const char              *text;
-       int                             match;
-
-       struct timeval *tout_p = NULL;
-       struct timeval tout = { 10, 0 };
-
-#ifdef NEW_LOGGING
-       LDAP_LOG ( OPERATION, DETAIL1, "do_syncrepl\n", 0, 0, 0 );
-#else
-       Debug( LDAP_DEBUG_TRACE, "=>do_syncrepl\n", 0, 0, 0 );
-#endif
-
-       if ( si == NULL )
-               return NULL;
-
-       switch( abs( si->si_type )) {
-       case LDAP_SYNC_REFRESH_ONLY:
-       case LDAP_SYNC_REFRESH_AND_PERSIST:
-               break;
-       default:
-               return NULL;
-       }
-
-       si->si_sync_mode = LDAP_SYNC_STATE_MODE;
+       psub = &si->si_be->be_nsuffix[0];
 
        /* Init connection to master */
 
-       rc = ldap_initialize( &ld, si->si_provideruri );
+       rc = ldap_initialize( &si->si_ld, si->si_provideruri );
        if ( rc != LDAP_SUCCESS ) {
 #ifdef NEW_LOGGING
                LDAP_LOG( OPERATION, ERR,
-                       "do_syncrepl: ldap_initialize failed (%s)\n",
+                       "do_syncrep1: ldap_initialize failed (%s)\n",
                        si->si_provideruri, 0, 0 );
 #else
                Debug( LDAP_DEBUG_ANY,
-                       "do_syncrepl: ldap_initialize failed (%s)\n",
+                       "do_syncrep1: ldap_initialize failed (%s)\n",
                        si->si_provideruri, 0, 0 );
 #endif
-               return NULL;
+               return rc;
        }
 
-       op.o_protocol = LDAP_VERSION3;
-       ldap_set_option( ld, LDAP_OPT_PROTOCOL_VERSION, &op.o_protocol );
+       op->o_protocol = LDAP_VERSION3;
+       ldap_set_option( si->si_ld, LDAP_OPT_PROTOCOL_VERSION, &op->o_protocol );
 
        /* Bind to master */
 
        if ( si->si_tls ) {
-               rc = ldap_start_tls_s( ld, NULL, NULL );
+               rc = ldap_start_tls_s( si->si_ld, NULL, NULL );
                if( rc != LDAP_SUCCESS ) {
 #ifdef NEW_LOGGING
-                       LDAP_LOG ( OPERATION, ERR, "do_syncrepl: "
+                       LDAP_LOG ( OPERATION, ERR, "do_syncrep1: "
                                "%s: ldap_start_tls failed (%d)\n",
                                si->si_tls == SYNCINFO_TLS_CRITICAL ? "Error" : "Warning",
                                rc, 0 );
@@ -293,7 +218,7 @@ do_syncrepl(
                                si->si_tls == SYNCINFO_TLS_CRITICAL ? "Error" : "Warning",
                                rc, 0 );
 #endif
-                       if( si->si_tls == SYNCINFO_TLS_CRITICAL ) return NULL;
+                       if( si->si_tls == SYNCINFO_TLS_CRITICAL ) goto done;
                }
        }
 
@@ -302,10 +227,10 @@ do_syncrepl(
                void *defaults;
 
                if ( si->si_secprops != NULL ) {
-                       int err = ldap_set_option( ld,
+                       rc = ldap_set_option( si->si_ld,
                                LDAP_OPT_X_SASL_SECPROPS, si->si_secprops);
 
-                       if( err != LDAP_OPT_SUCCESS ) {
+                       if( rc != LDAP_OPT_SUCCESS ) {
 #ifdef NEW_LOGGING
                                LDAP_LOG ( OPERATION, ERR, "do_bind: Error: "
                                        "ldap_set_option(%s,SECPROPS,\"%s\") failed!\n",
@@ -315,15 +240,15 @@ do_syncrepl(
                                        "(%s,SECPROPS,\"%s\") failed!\n",
                                        si->si_provideruri, si->si_secprops, 0 );
 #endif
-                               return NULL;
+                               goto done;
                        }
                }
 
-               defaults = lutil_sasl_defaults( ld,
+               defaults = lutil_sasl_defaults( si->si_ld,
                        si->si_saslmech, si->si_realm,
                        si->si_authcId, si->si_passwd, si->si_authzId );
 
-               rc = ldap_sasl_interactive_bind_s( ld,
+               rc = ldap_sasl_interactive_bind_s( si->si_ld,
                                si->si_binddn,
                                si->si_saslmech,
                                NULL, NULL,
@@ -339,133 +264,261 @@ do_syncrepl(
                 */
                if ( rc != LDAP_SUCCESS ) {
 #ifdef NEW_LOGGING
-                       LDAP_LOG ( OPERATION, ERR, "do_syncrepl: "
+                       LDAP_LOG ( OPERATION, ERR, "do_syncrep1: "
                                "ldap_sasl_interactive_bind_s failed (%d)\n",
                                rc, 0, 0 );
 #else
-                       Debug( LDAP_DEBUG_ANY, "do_syncrepl: "
+                       Debug( LDAP_DEBUG_ANY, "do_syncrep1: "
                                "ldap_sasl_interactive_bind_s failed (%d)\n",
                                rc, 0, 0 );
 #endif
-                       return NULL;
+                       goto done;
                }
 #else /* HAVE_CYRUS_SASL */
+               /* Should never get here, we trapped this at config time */
                fprintf( stderr, "not compiled with SASL support\n" );
-               return NULL;
+               rc = LDAP_OTHER;
+               goto done;
 #endif
        } else {
-               rc = ldap_bind_s( ld, si->si_binddn, si->si_passwd, si->si_bindmethod );
+               rc = ldap_bind_s( si->si_ld, si->si_binddn, si->si_passwd, si->si_bindmethod );
                if ( rc != LDAP_SUCCESS ) {
 #ifdef NEW_LOGGING
-                       LDAP_LOG ( OPERATION, ERR, "do_syncrepl: "
+                       LDAP_LOG ( OPERATION, ERR, "do_syncrep1: "
                                "ldap_bind_s failed (%d)\n", rc, 0, 0 );
 #else
-                       Debug( LDAP_DEBUG_ANY, "do_syncrepl: "
+                       Debug( LDAP_DEBUG_ANY, "do_syncrep1: "
                                "ldap_bind_s failed (%d)\n", rc, 0, 0 );
 #endif
-                       return NULL;
+                       goto done;
                }
        }
 
-       /* set thread context in syncinfo */
-       si->si_ctx = ctx;
-
-       be = si->si_be;
-
-       si->si_conn = &conn;
-       conn.c_connid = -1;
-       conn.c_send_ldap_result = slap_send_ldap_result;
-       conn.c_send_search_entry = slap_send_search_entry;
-       conn.c_send_search_reference = slap_send_search_reference;
-       conn.c_listener = (Listener *)&dummy_list;
-       conn.c_peer_name = slap_empty_bv;
-
-       /* set memory context */
-#define SLAB_SIZE 1048576
-       memsiz = SLAB_SIZE;
-       memctx = sl_mem_create( memsiz, ctx );
-       op.o_tmpmemctx = memctx;
-       op.o_tmpmfuncs = &sl_mfuncs;
-
-       op.o_dn = si->si_updatedn;
-       op.o_ndn = si->si_updatedn;
-       op.o_callback = &cb;
-       op.o_time = slap_get_time();
-       op.o_threadctx = si->si_ctx;
-       op.o_managedsait = 1;
-       op.o_bd = be;
-       op.o_conn = &conn;
-       op.o_connid = op.o_conn->c_connid;
-#if defined( LDAP_SLAPI )
-       op.o_pb = slapi_pblock_new();
-       slapi_x_create_object_extensions( SLAPI_X_EXT_OPERATION, &op );
-#endif /* defined( LDAP_SLAPI ) */
-
        /* get syncrepl cookie of shadow replica from subentry */
 
-       assert( si->si_id < 1000 );
+       assert( si->si_rid < 1000 );
        syncrepl_cn_bv.bv_val = syncrepl_cbuf;
        syncrepl_cn_bv.bv_len = snprintf(syncrepl_cbuf, sizeof(syncrepl_cbuf),
-               CN_STR "syncrepl%d", si->si_id );
-       build_new_dn( &op.o_req_ndn, &si->si_base, &syncrepl_cn_bv,
-               op.o_tmpmemctx );
-       op.o_req_dn = op.o_req_ndn;
+               CN_STR "syncrepl%ld", si->si_rid );
+       build_new_dn( &op->o_req_ndn, psub, &syncrepl_cn_bv, op->o_tmpmemctx );
+       op->o_req_dn = op->o_req_ndn;
 
-       si->si_syncCookie = NULL;
-       backend_attribute( &op, NULL, &op.o_req_ndn,
-               slap_schema.si_ad_syncreplCookie, &si->si_syncCookie );
+       LDAP_STAILQ_FOREACH( sc, &slap_sync_cookie, sc_next ) {
+               if ( si->si_rid == sc->rid ) {
+                       cmdline_cookie_found = 1;
+                       break;
+               }
+       }
 
-       ber_dupbv( &syncCookie_req, &si->si_syncCookie[0] );
+       if ( cmdline_cookie_found ) {
+               /* cookie is supplied in the command line */
+               BerVarray cookie = NULL;
+               struct berval cookie_bv;
+
+               LDAP_STAILQ_REMOVE( &slap_sync_cookie, sc, sync_cookie, sc_next );
+               slap_sync_cookie_free( &si->si_syncCookie, 0 );
+
+               /* read stored cookie if it exists */
+               backend_attribute( op, NULL, &op->o_req_ndn,
+                       slap_schema.si_ad_syncreplCookie, &cookie );
+
+               if ( !cookie ) {
+                       /* no stored cookie */
+                       if ( sc->ctxcsn == NULL ||
+                                sc->ctxcsn->bv_val == NULL ) {
+                               /* if cmdline cookie does not have ctxcsn */
+                               /* component, set it to an initial value */
+                               slap_init_sync_cookie_ctxcsn( sc );
+                       }
+                       slap_dup_sync_cookie( &si->si_syncCookie, sc );
+                       slap_sync_cookie_free( sc, 1 );
+                       sc = NULL;
+               } else {
+                       /* stored cookie */
+                       struct berval newcookie = { 0, NULL };
+                       ber_dupbv( &cookie_bv, &cookie[0] );
+                       ber_bvarray_add( &si->si_syncCookie.octet_str, &cookie_bv );
+                       slap_parse_sync_cookie( &si->si_syncCookie );
+                       ber_bvarray_free( si->si_syncCookie.octet_str );
+                       si->si_syncCookie.octet_str = NULL;
+                       ber_bvarray_free_x( cookie, op->o_tmpmemctx );
+                       if ( sc->sid != -1 ) {
+                               /* command line cookie wins */
+                               si->si_syncCookie.sid = sc->sid;
+                       }
+                       if ( sc->ctxcsn != NULL ) {
+                               /* command line cookie wins */
+                               if ( si->si_syncCookie.ctxcsn ) {
+                                       ber_bvarray_free( si->si_syncCookie.ctxcsn );
+                                       si->si_syncCookie.ctxcsn = NULL;
+                               }
+                               ber_dupbv( &cookie_bv, &sc->ctxcsn[0] );
+                               ber_bvarray_add( &si->si_syncCookie.ctxcsn, &cookie_bv );
+                       }
+                       if ( sc->rid != -1 ) {
+                               /* command line cookie wins */
+                               si->si_syncCookie.rid = sc->rid;
+                       }
+                       slap_sync_cookie_free( sc, 1 );
+                       sc = NULL;
+                       slap_compose_sync_cookie( NULL, &newcookie,
+                                       &si->si_syncCookie.ctxcsn[0],
+                                       si->si_syncCookie.sid, si->si_syncCookie.rid );
+                       ber_bvarray_add( &si->si_syncCookie.octet_str, &newcookie );
+               }
+       } else {
+               /* no command line cookie is specified */
+               if ( si->si_syncCookie.octet_str == NULL ) {
+                       BerVarray cookie = NULL;
+                       struct berval cookie_bv;
+                       /* try to read stored cookie */
+                       backend_attribute( op, NULL, &op->o_req_ndn,
+                               slap_schema.si_ad_syncreplCookie, &cookie );
+                       if ( cookie ) {
+                               ber_dupbv( &cookie_bv, &cookie[0] );
+                               ber_bvarray_add( &si->si_syncCookie.octet_str, &cookie_bv );
+                               slap_parse_sync_cookie( &si->si_syncCookie );
+                               ber_bvarray_free_x( cookie, op->o_tmpmemctx );
+                       }
+               }
+       }
 
-       psub = be->be_nsuffix[0];
+       rc = ldap_sync_search( si, op->o_tmpmemctx );
 
-       rc = ldap_sync_search( si, ld, memctx, &msgid );
        if( rc != LDAP_SUCCESS ) {
 #ifdef NEW_LOGGING
-               LDAP_LOG ( OPERATION, ERR, "do_syncrepl: "
+               LDAP_LOG ( OPERATION, ERR, "do_syncrep1: "
                        "ldap_search_ext: %s (%d)\n", ldap_err2string( rc ), rc, 0 );
 #else
-               Debug( LDAP_DEBUG_ANY, "do_syncrepl: "
+               Debug( LDAP_DEBUG_ANY, "do_syncrep1: "
                        "ldap_search_ext: %s (%d)\n", ldap_err2string( rc ), rc, 0 );
 #endif
-               return NULL;
        }
 
+done:
+       if ( rc ) {
+               if ( si->si_ld ) {
+                       ldap_unbind( si->si_ld );
+                       si->si_ld = NULL;
+               }
+       }
+
+       return rc;
+}
+
+static int
+do_syncrep2(
+       Operation *op,
+       syncinfo_t *si )
+{
+       LDAPControl     **rctrls = NULL;
+       LDAPControl     *rctrlp;
+
+       BerElementBuffer berbuf;
+       BerElement      *ber = (BerElement *)&berbuf;
+
+       LDAPMessage     *res = NULL;
+       LDAPMessage     *msg = NULL;
+
+       char            *retoid = NULL;
+       struct berval   *retdata = NULL;
+
+       Entry           *entry = NULL;
+
+       int             syncstate;
+       struct berval   syncUUID = { 0, NULL };
+       struct sync_cookie      syncCookie = { NULL, -1, NULL };
+       struct sync_cookie      syncCookie_req = { NULL, -1, NULL };
+       struct berval           cookie = { 0, NULL };
+
+       int     rc, err, i;
+       ber_len_t       len;
+
+       int rc_efree;
+
+       struct berval   *psub;
+       Modifications   *modlist = NULL;
+
+       const char              *text;
+       int                             match;
+
+       struct timeval *tout_p = NULL;
+       struct timeval tout = { 0, 0 };
+
+       int             refreshDeletes = 0;
+       int             refreshDone = 1;
+       BerVarray syncUUIDs = NULL;
+       ber_tag_t si_tag;
+
+       if ( slapd_abrupt_shutdown ) {
+               rc = -2;
+               goto done;
+       }
+
+       ber_init2( ber, NULL, LBER_USE_DER );
+       ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
+
+#ifdef NEW_LOGGING
+       LDAP_LOG ( OPERATION, DETAIL1, "do_syncrep2\n", 0, 0, 0 );
+#else
+       Debug( LDAP_DEBUG_TRACE, "=>do_syncrep2\n", 0, 0, 0 );
+#endif
+
+       psub = &si->si_be->be_nsuffix[0];
+
+       slap_dup_sync_cookie( &syncCookie_req, &si->si_syncCookie );
+
        if ( abs(si->si_type) == LDAP_SYNC_REFRESH_AND_PERSIST ){
                tout_p = &tout;
        } else {
                tout_p = NULL;
        }
 
-       while (( rc = ldap_result( ld, LDAP_RES_ANY, LDAP_MSG_ONE, tout_p, &res ))
-               >= 0 )
+       while (( rc = ldap_result( si->si_ld, LDAP_RES_ANY, LDAP_MSG_ONE, tout_p, &res ))
+               > 0 )
        {
-               if ( rc == 0 ) {
-                       if ( slapd_abrupt_shutdown ) {
-                               break;
-                       } else {
-                               continue;
-                       }
+               if ( slapd_abrupt_shutdown ) {
+                       rc = -2;
+                       goto done;
                }
-
-               for( msg = ldap_first_message( ld, res );
+               for( msg = ldap_first_message( si->si_ld, res );
                  msg != NULL;
-                 msg = ldap_next_message( ld, msg ) )
+                 msg = ldap_next_message( si->si_ld, msg ) )
                {
-                       syncCookie.bv_len = 0; syncCookie.bv_val = NULL;
                        switch( ldap_msgtype( msg ) ) {
                        case LDAP_RES_SEARCH_ENTRY:
-                               entry = syncrepl_message_to_entry( si, ld, &op, msg,
-                                       &modlist, &syncstate, &syncUUID, &syncCookie );
-                               rc_efree = syncrepl_entry( si, ld, &op, entry, modlist,
-                                               syncstate, &syncUUID, &syncCookie, !syncinfo_arrived );
-                               if ( syncCookie.bv_len ) {
-                                       syncrepl_updateCookie( si, ld, &op, &psub, &syncCookie );
+                               ldap_get_entry_controls( si->si_ld, msg, &rctrls );
+                               /* we can't work without the control */
+                               if ( !rctrls ) {
+                                       rc = -1;
+                                       goto done;
+                               }
+                               rctrlp = *rctrls;
+                               ber_init2( ber, &rctrlp->ldctl_value, LBER_USE_DER );
+                               ber_scanf( ber, "{em", &syncstate, &syncUUID );
+                               if ( ber_peek_tag( ber, &len ) == LDAP_TAG_SYNC_COOKIE ) {
+                                       ber_scanf( ber, "m}", &cookie );
+                                       if ( cookie.bv_val ) {
+                                               struct berval tmp_bv;
+                                               ber_dupbv( &tmp_bv, &cookie );
+                                               ber_bvarray_add( &syncCookie.octet_str, &tmp_bv );
+                                       }
+                                       if ( syncCookie.octet_str &&
+                                                       syncCookie.octet_str[0].bv_val )
+                                               slap_parse_sync_cookie( &syncCookie );
                                }
+                               entry = syncrepl_message_to_entry( si, op, msg,
+                                       &modlist, syncstate );
+                               rc_efree = syncrepl_entry( si, op, entry, modlist, syncstate,
+                                                       &syncUUID, &syncCookie_req );
+                               if ( syncCookie.octet_str && syncCookie.octet_str[0].bv_val ) {
+                                       syncrepl_updateCookie( si, op, psub, &syncCookie );
+                               }
+                               ldap_controls_free( rctrls );
                                if ( modlist ) {
                                        slap_mods_free( modlist );
                                }
-                               if ( rc_efree ) {
+                               if ( rc_efree && entry ) {
                                        entry_free( entry );
                                }
                                break;
@@ -473,126 +526,188 @@ do_syncrepl(
                        case LDAP_RES_SEARCH_REFERENCE:
 #ifdef NEW_LOGGING
                                LDAP_LOG( OPERATION, ERR,
-                                       "do_syncrepl : reference received\n", 0, 0, 0 );
+                                       "do_syncrep2 : reference received\n", 0, 0, 0 );
 #else
                                Debug( LDAP_DEBUG_ANY,
-                                       "do_syncrepl : reference received\n", 0, 0, 0 );
+                                       "do_syncrep2 : reference received\n", 0, 0, 0 );
 #endif
                                break;
 
                        case LDAP_RES_SEARCH_RESULT:
-                               ldap_parse_result( ld, msg, &err, NULL, NULL, NULL,
+                               ldap_parse_result( si->si_ld, msg, &err, NULL, NULL, NULL,
                                        &rctrls, 0 );
                                if ( rctrls ) {
-                                       BerElementBuffer berbuf;
-                                       BerElement      *ctrl_ber;
                                        rctrlp = *rctrls;
-                                       ctrl_ber = (BerElement *)&berbuf;
-                                       ber_init2( ctrl_ber, &rctrlp->ldctl_value, LBER_USE_DER );
+                                       ber_init2( ber, &rctrlp->ldctl_value, LBER_USE_DER );
 
-                                       ber_scanf( ctrl_ber, "{" /*"}"*/);
-                                       if ( ber_peek_tag( ctrl_ber, &len )
-                                               == LDAP_SYNC_TAG_COOKIE )
+                                       ber_scanf( ber, "{" /*"}"*/);
+                                       if ( ber_peek_tag( ber, &len ) == LDAP_TAG_SYNC_COOKIE )
                                        {
-                                               ber_scanf( ctrl_ber, "o", &syncCookie );
+                                               ber_scanf( ber, "m", &cookie );
+                                               if ( cookie.bv_val ) {
+                                                       struct berval tmp_bv;
+                                                       ber_dupbv( &tmp_bv, &cookie );
+                                                       ber_bvarray_add( &syncCookie.octet_str, &tmp_bv);
+                                               }
+                                               if ( syncCookie.octet_str &&
+                                                                syncCookie.octet_str[0].bv_val )
+                                                       slap_parse_sync_cookie( &syncCookie );
                                        }
-                                       ldap_controls_free( rctrls );
-                               }
-                               value_match( &match, slap_schema.si_ad_entryCSN,
-                                       slap_schema.si_ad_entryCSN->ad_type->sat_ordering,
-                                       SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
-                                       &syncCookie_req, &syncCookie, &text );
-                               if (si->si_type == LDAP_SYNC_REFRESH_AND_PERSIST) {
-                                       /* FIXME : different error behaviors according to
-                                        *      1) err code : LDAP_BUSY ...
-                                        *      2) on err policy : stop service, stop sync, retry
-                                        */
-                                       if ( syncCookie.bv_len && match < 0) {
-                                               syncrepl_updateCookie( si, ld, &op,
-                                                       &psub, &syncCookie );
+                                       if ( ber_peek_tag( ber, &len ) == LDAP_TAG_REFRESHDELETES )
+                                       {
+                                               ber_scanf( ber, "b", &refreshDeletes );
                                        }
-                                       goto done;
+                                       ber_scanf( ber, "}" );
+                               }
+                               if ( syncCookie_req.ctxcsn == NULL ) {
+                                       match = -1;
+                               } else if ( syncCookie.ctxcsn == NULL ) {
+                                       match = 1;
                                } else {
+                                       value_match( &match, slap_schema.si_ad_entryCSN,
+                                               slap_schema.si_ad_entryCSN->ad_type->sat_ordering,
+                                               SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
+                                               &syncCookie_req.ctxcsn[0], &syncCookie.ctxcsn[0], &text );
+                               }
+                               if ( syncCookie.octet_str && syncCookie.octet_str->bv_val
+                                        && match < 0 ) {
+                                       syncrepl_updateCookie( si, op, psub, &syncCookie );
+                               }
+                               if ( rctrls ) {
+                                       ldap_controls_free( rctrls );
+                               }
+                               if (si->si_type != LDAP_SYNC_REFRESH_AND_PERSIST) {
                                        /* FIXME : different error behaviors according to
                                         *      1) err code : LDAP_BUSY ...
                                         *      2) on err policy : stop service, stop sync, retry
                                         */
-                                       if ( syncCookie.bv_len && match < 0 ) {
-                                               syncrepl_updateCookie( si, ld, &op, &psub, &syncCookie);
-                                       }
-                                       if ( si->si_sync_mode == LDAP_SYNC_STATE_MODE && match
-                                               < 0 )
-                                       {
-                                               syncrepl_del_nonpresent( ld, &op, si );
+                                       if ( refreshDeletes == 0 && match < 0 ) {
+                                               syncrepl_del_nonpresent( op, si );
+                                       } else {
+                                               avl_free( si->si_presentlist, avl_ber_bvfree );
+                                               si->si_presentlist = NULL;
                                        }
-                                       goto done;
                                }
+                               rc = -2;
+                               goto done;
                                break;
 
                        case LDAP_RES_INTERMEDIATE:
-                               rc = ldap_parse_intermediate( ld, msg,
+                               rc = ldap_parse_intermediate( si->si_ld, msg,
                                        &retoid, &retdata, NULL, 0 );
                                if ( !rc && !strcmp( retoid, LDAP_SYNC_INFO ) ) {
-                                       sync_info_arrived = 1;
-                                       res_ber = ber_init( retdata );
-                                       ber_scanf( res_ber, "{e" /*"}"*/, &syncstate );
-
-                                       if ( ber_peek_tag( res_ber, &len )
-                                                               == LDAP_SYNC_TAG_COOKIE ) {
-                                               ber_scanf( res_ber, /*"{"*/ "o}", &syncCookie );
-                                       } else {
-                                               if ( syncstate == LDAP_SYNC_NEW_COOKIE ) {
+                                       int             si_refreshDelete = 0;
+                                       int             si_refreshPresent = 0;
+                                       ber_init2( ber, retdata, LBER_USE_DER );
+
+                                       switch ( si_tag = ber_peek_tag( ber, &len )) {
+                                       ber_tag_t tag;
+                                       case LDAP_TAG_SYNC_NEW_COOKIE:
+                                               ber_scanf( ber, "tm", &tag, &cookie );
+                                               break;
+                                       case LDAP_TAG_SYNC_REFRESH_DELETE:
+                                               si_refreshDelete = 1;
+                                       case LDAP_TAG_SYNC_REFRESH_PRESENT:
+                                               si_refreshPresent = 1;
+                                               ber_scanf( ber, "t{", &tag );
+                                               if ( ber_peek_tag( ber, &len ) == LDAP_TAG_SYNC_COOKIE )
+                                               {
+                                                       ber_scanf( ber, "m", &cookie );
+                                                       if ( cookie.bv_val ) {
+                                                               struct berval tmp_bv;
+                                                               ber_dupbv( &tmp_bv, &cookie );
+                                                               ber_bvarray_add( &syncCookie.octet_str, &tmp_bv);
+                                                       }
+                                                       if ( syncCookie.octet_str &&
+                                                                        syncCookie.octet_str[0].bv_val )
+                                                               slap_parse_sync_cookie( &syncCookie );
+                                               }
+                                               if ( ber_peek_tag( ber, &len ) ==
+                                                                       LDAP_TAG_REFRESHDONE )
+                                               {
+                                                       ber_scanf( ber, "b", &refreshDone );
+                                               }
+                                               ber_scanf( ber, "}" );
+                                               break;
+                                       case LDAP_TAG_SYNC_ID_SET:
+                                               ber_scanf( ber, "t{", &tag );
+                                               if ( ber_peek_tag( ber, &len ) ==
+                                                               LDAP_TAG_SYNC_COOKIE ) {
+                                                       ber_scanf( ber, "m", &cookie );
+                                                       if ( cookie.bv_val ) {
+                                                               struct berval tmp_bv;
+                                                               ber_dupbv( &tmp_bv, &cookie );
+                                                               ber_bvarray_add( &syncCookie.octet_str,
+                                                                                                &tmp_bv );
+                                                       }
+                                                       if ( syncCookie.octet_str &&
+                                                                        syncCookie.octet_str[0].bv_val )
+                                                               slap_parse_sync_cookie( &syncCookie );
+                                               }
+                                               if ( ber_peek_tag( ber, &len ) ==
+                                                                       LDAP_TAG_REFRESHDELETES )
+                                               {
+                                                       ber_scanf( ber, "b", &refreshDeletes );
+                                               }
+                                               ber_scanf( ber, "[W]", &syncUUIDs );
+                                               ber_scanf( ber, "}" );
+                                               for ( i = 0; syncUUIDs[i].bv_val; i++ ) {
+                                                       struct berval *syncuuid_bv;
+                                                       syncuuid_bv = ber_dupbv( NULL, &syncUUIDs[i] );
+                                                       avl_insert( &si->si_presentlist,
+                                                                       (caddr_t) syncuuid_bv,
+                                                                       syncuuid_cmp, avl_dup_error );
+                                               }
+                                               ber_memfree_x( syncUUIDs, op->o_tmpmemctx );
+                                               break;
+                                       default:
 #ifdef NEW_LOGGING
-                                                       LDAP_LOG( OPERATION, ERR,
-                                                               "do_syncrepl : cookie required\n", 0, 0, 0 );
+                                       LDAP_LOG( OPERATION, ERR,
+                                               "do_syncrep2 : unknown syncinfo tag (%ld)\n",
+                                               (long) si_tag, 0, 0 );
 #else
-                                                       Debug( LDAP_DEBUG_ANY,
-                                                               "do_syncrepl : cookie required\n", 0, 0, 0 );
+                                       Debug( LDAP_DEBUG_ANY,
+                                               "do_syncrep2 : unknown syncinfo tag (%ld)\n",
+                                               (long) si_tag, 0, 0 );
 #endif
-                                               }
+                                               ldap_memfree( retoid );
+                                               ber_bvfree( retdata );
+                                               continue;
                                        }
 
-                                       value_match( &match, slap_schema.si_ad_entryCSN,
-                                               slap_schema.si_ad_entryCSN->ad_type->sat_ordering,
-                                               SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
-                                               &syncCookie_req, &syncCookie, &text );
+                                       if ( syncCookie_req.ctxcsn == NULL ) {
+                                               match = -1;
+                                       } else if ( syncCookie.ctxcsn == NULL ) {
+                                               match = 1;
+                                       } else {
+                                               value_match( &match, slap_schema.si_ad_entryCSN,
+                                                       slap_schema.si_ad_entryCSN->ad_type->sat_ordering,
+                                                       SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
+                                                       &syncCookie_req.ctxcsn[0],
+                                                       &syncCookie.ctxcsn[0], &text );
+                                       }
 
-                                       if ( syncCookie.bv_len && match < 0 ) {
-                                               syncrepl_updateCookie( si, ld, &op, &psub, &syncCookie);
+                                       if ( syncCookie.ctxcsn && syncCookie.ctxcsn[0].bv_val
+                                                && match < 0 ) {
+                                               syncrepl_updateCookie( si, op, psub, &syncCookie);
                                        }
 
-                                       if ( syncstate == LDAP_SYNC_STATE_MODE_DONE ) {
+                                       if ( si_refreshPresent == 1 ) {
                                                if ( match < 0 ) {
-                                                       syncrepl_del_nonpresent( ld, &op, si );
+                                                       syncrepl_del_nonpresent( op, si );
                                                }
-                                               si->si_sync_mode = LDAP_SYNC_LOG_MODE;
-                                       } else if ( syncstate == LDAP_SYNC_LOG_MODE_DONE ) {
-                                               si->si_sync_mode = LDAP_SYNC_PERSIST_MODE;
-                                       } else if ( syncstate == LDAP_SYNC_REFRESH_DONE ) {
-                                               si->si_sync_mode = LDAP_SYNC_PERSIST_MODE;
-                                       } else if ( syncstate != LDAP_SYNC_NEW_COOKIE ||
-                                               syncstate != LDAP_SYNC_LOG_MODE_DONE )
-                                       {
-#ifdef NEW_LOGGING
-                                               LDAP_LOG( OPERATION, ERR,
-                                                       "do_syncrepl : unknown sync info\n", 0, 0, 0 );
-#else
-                                               Debug( LDAP_DEBUG_ANY,
-                                                       "do_syncrepl : unknown sync info\n", 0, 0, 0 );
-#endif
-                                       }
+                                       } 
 
                                        ldap_memfree( retoid );
                                        ber_bvfree( retdata );
-                                       ber_free( res_ber, 1 );
                                        break;
                                } else {
 #ifdef NEW_LOGGING
-                                       LDAP_LOG( OPERATION, ERR,"do_syncrepl :"
+                                       LDAP_LOG( OPERATION, ERR,"do_syncrep2 :"
                                                " unknown intermediate "
                                                "response\n", 0, 0, 0 );
 #else
-                                       Debug( LDAP_DEBUG_ANY, "do_syncrepl : "
+                                       Debug( LDAP_DEBUG_ANY, "do_syncrep2 : "
                                                "unknown intermediate response (%d)\n",
                                                rc, 0, 0 );
 #endif
@@ -603,69 +718,176 @@ do_syncrepl(
                                break;
                        default:
 #ifdef NEW_LOGGING
-                               LDAP_LOG( OPERATION, ERR, "do_syncrepl : "
+                               LDAP_LOG( OPERATION, ERR, "do_syncrep2 : "
                                        "unknown message\n", 0, 0, 0 );
 #else
-                               Debug( LDAP_DEBUG_ANY, "do_syncrepl : "
+                               Debug( LDAP_DEBUG_ANY, "do_syncrep2 : "
                                        "unknown message\n", 0, 0, 0 );
 #endif
                                break;
 
                        }
-                       if ( syncCookie.bv_val ) {
-                               ch_free( syncCookie.bv_val );
-                               syncCookie.bv_val = NULL;
-                       }
-                       if ( syncUUID.bv_val ) {
-                               ch_free( syncUUID.bv_val );
-                               syncUUID.bv_val = NULL;
+                       if ( syncCookie.octet_str ) {
+                               slap_sync_cookie_free( &syncCookie_req, 0 );
+                               slap_dup_sync_cookie( &syncCookie_req, &syncCookie );
+                               slap_sync_cookie_free( &syncCookie, 0 );
                        }
                }
                ldap_msgfree( res );
+               res = NULL;
        }
 
        if ( rc == -1 ) {
-               int errno;
                const char *errstr;
 
-               ldap_get_option( ld, LDAP_OPT_ERROR_NUMBER, &errno );
-               errstr = ldap_err2string( errno );
+               ldap_get_option( si->si_ld, LDAP_OPT_ERROR_NUMBER, &rc );
+               errstr = ldap_err2string( rc );
                
 #ifdef NEW_LOGGING
                LDAP_LOG( OPERATION, ERR,
-                       "do_syncrepl : %s\n", errstr, 0, 0 );
+                       "do_syncrep2 : %s\n", errstr, 0, 0 );
 #else
                Debug( LDAP_DEBUG_ANY,
-                       "do_syncrepl : %s\n", errstr, 0, 0 );
+                       "do_syncrep2 : %s\n", errstr, 0, 0 );
 #endif
        }
 
 done:
-#if defined( LDAP_SLAPI )
-       if ( op.o_pb ) slapi_pblock_destroy( op.o_pb );
-       slapi_x_free_object_extensions( SLAPI_X_EXT_OPERATION, &op );
-#endif /* defined( LDAP_SLAPI ) */
-
-       if ( syncCookie.bv_val )
-               ch_free( syncCookie.bv_val );
-       if ( syncCookie_req.bv_val )
-               ch_free( syncCookie_req.bv_val );
-       if ( syncUUID.bv_val )
-               ch_free( syncUUID.bv_val );
+       slap_sync_cookie_free( &syncCookie, 0 );
+       slap_sync_cookie_free( &syncCookie_req, 0 );
 
        if ( res ) ldap_msgfree( res );
 
-       ldap_unbind( ld );
+       if ( rc && si->si_ld ) {
+               ldap_unbind( si->si_ld );
+               si->si_ld = NULL;
+       }
+
+       return rc;
+}
+
+void *
+do_syncrepl(
+       void    *ctx,
+       void    *arg )
+{
+       struct re_s* rtask = arg;
+       syncinfo_t *si = ( syncinfo_t * ) rtask->arg;
+       Connection conn = {0};
+       Operation op = {0};
+       int rc = LDAP_SUCCESS;
+       int first = 0;
+       int dostop = 0;
+       ber_socket_t s;
+
+#ifdef NEW_LOGGING
+       LDAP_LOG ( OPERATION, DETAIL1, "do_syncrepl\n", 0, 0, 0 );
+#else
+       Debug( LDAP_DEBUG_TRACE, "=>do_syncrepl\n", 0, 0, 0 );
+#endif
+
+       if ( si == NULL )
+               return NULL;
+
+       switch( abs( si->si_type )) {
+       case LDAP_SYNC_REFRESH_ONLY:
+       case LDAP_SYNC_REFRESH_AND_PERSIST:
+               break;
+       default:
+               return NULL;
+       }
+
+       if ( slapd_abrupt_shutdown && si->si_ld ) {
+               ldap_get_option( si->si_ld, LDAP_OPT_DESC, &s );
+               connection_client_stop( s );
+               ldap_unbind( si->si_ld );
+               si->si_ld = NULL;
+               return NULL;
+       }
+
+       conn.c_connid = -1;
+       conn.c_send_ldap_result = slap_send_ldap_result;
+       conn.c_send_search_entry = slap_send_search_entry;
+       conn.c_send_search_reference = slap_send_search_reference;
+       conn.c_listener = (Listener *)&dummy_list;
+       conn.c_peer_name = slap_empty_bv;
 
-       ber_bvarray_free_x( si->si_syncCookie, op.o_tmpmemctx );
-       si->si_syncCookie = NULL;
+       /* set memory context */
+       op.o_tmpmemctx = sl_mem_create( SLMALLOC_SLAB_SIZE, ctx );
+       op.o_tmpmfuncs = &sl_mfuncs;
 
+       op.o_dn = si->si_updatedn;
+       op.o_ndn = si->si_updatedn;
+       op.o_time = slap_get_time();
+       op.o_threadctx = ctx;
+       op.o_managedsait = 1;
+       op.o_bd = si->si_be;
+       op.o_conn = &conn;
+       op.o_connid = op.o_conn->c_connid;
+
+       op.o_sync_state.ctxcsn = NULL;
+       op.o_sync_state.sid = -1;
+       op.o_sync_state.octet_str = NULL;
+       op.o_sync_slog_size = -1;
+       LDAP_STAILQ_FIRST( &op.o_sync_slog_list ) = NULL;
+       op.o_sync_slog_list.stqh_last = &LDAP_STAILQ_FIRST(&op.o_sync_slog_list);
+
+       /* Establish session, do search */
+       if ( !si->si_ld ) {
+               first = 1;
+               rc = do_syncrep1( &op, si );
+       }
+
+       /* Process results */
+       if ( rc == LDAP_SUCCESS ) {
+               ldap_get_option( si->si_ld, LDAP_OPT_DESC, &s );
+
+               rc = do_syncrep2( &op, si );
+
+               if ( abs(si->si_type) == LDAP_SYNC_REFRESH_AND_PERSIST ) {
+                       /* If we succeeded, enable the connection for further listening.
+                        * If we failed, tear down the connection and reschedule.
+                        */
+                       if ( rc == LDAP_SUCCESS ) {
+                               if ( first ) {
+                                       rc = connection_client_setup( s, (Listener *)&dummy_list, do_syncrepl,
+                                               arg );
+                               } else {
+                                       connection_client_enable( s );
+                               }
+                       } else if ( !first ) {
+                               dostop = 1;
+                       }
+               } else {
+                       if ( rc == -2 ) rc = 0;
+               }
+       }
+
+       /* At this point, we have 4 cases:
+        * 1) for any hard failure, give up and remove this task
+        * 2) for ServerDown, reschedule this task to run
+        * 3) for Refresh and Success, reschedule to run
+        * 4) for Persist and Success, reschedule to defer
+        */
        ldap_pvt_thread_mutex_lock( &syncrepl_rq.rq_mutex );
-       ldap_pvt_runqueue_stoptask( &syncrepl_rq, rtask );
-       if ( si->si_type == LDAP_SYNC_REFRESH_ONLY ) {
-               ldap_pvt_runqueue_resched( &syncrepl_rq, rtask );
-       } else {
+       if ( ldap_pvt_runqueue_isrunning( &syncrepl_rq, rtask )) {
+               ldap_pvt_runqueue_stoptask( &syncrepl_rq, rtask );
+       }
+
+       if ( dostop ) {
+               connection_client_stop( s );
+       }
+
+       if ( rc && rc != LDAP_SERVER_DOWN ) {
                ldap_pvt_runqueue_remove( &syncrepl_rq, rtask );
+       } else {
+               if ( rc == LDAP_SERVER_DOWN ||
+                       si->si_type == LDAP_SYNC_REFRESH_ONLY ) {
+                       rc = 0;
+               } else {
+                       rc = 1;
+               }
+               ldap_pvt_runqueue_resched( &syncrepl_rq, rtask, rc );
        }
        ldap_pvt_thread_mutex_unlock( &syncrepl_rq.rq_mutex );
 
@@ -675,13 +897,10 @@ done:
 Entry*
 syncrepl_message_to_entry(
        syncinfo_t      *si,
-       LDAP            *ld,
        Operation       *op,
        LDAPMessage     *msg,
        Modifications   **modlist,
-       int             *syncstate,
-       struct berval   *syncUUID,
-       struct berval   *syncCookie
+       int             syncstate
 )
 {
        Entry           *e = NULL;
@@ -697,10 +916,6 @@ syncrepl_message_to_entry(
        struct berval   bdn = {0, NULL}, dn, ndn;
        int             rc;
 
-       ber_len_t       len;
-       LDAPControl*    rctrlp;
-       LDAPControl**   rctrls = NULL;
-
        *modlist = NULL;
 
        if ( ldap_msgtype( msg ) != LDAP_RES_SEARCH_ENTRY ) {
@@ -716,41 +931,7 @@ syncrepl_message_to_entry(
 
        op->o_tag = LDAP_REQ_ADD;
 
-       rc = ldap_get_entry_controls( ld, msg, &rctrls );
-       if ( rc != LDAP_SUCCESS ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, ERR,
-                       "syncrepl_message_to_entry : control get failed (%d)", rc, 0, 0 );
-#else
-               Debug( LDAP_DEBUG_ANY,
-                       "syncrepl_message_to_entry : control get failed (%d)", rc, 0, 0 );
-#endif
-               return NULL;
-       }
-
-       if ( rctrls ) {
-               BerElementBuffer berbuf;
-               BerElement      *ctrl_ber;
-
-               rctrlp = *rctrls;
-               ctrl_ber = (BerElement *)&berbuf;
-               ber_init2( ctrl_ber, &rctrlp->ldctl_value, LBER_USE_DER );
-               ber_scanf( ctrl_ber, "{eo", syncstate, syncUUID );
-               if ( ber_peek_tag( ctrl_ber, &len ) == LDAP_SYNC_TAG_COOKIE ) {
-                       ber_scanf( ctrl_ber, "o}", syncCookie );
-               }
-               ldap_controls_free( rctrls );
-       } else {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, ERR,"syncrepl_message_to_entry : "
-                       " rctrls absent\n", 0, 0, 0 );
-#else
-               Debug( LDAP_DEBUG_ANY, "syncrepl_message_to_entry :"
-                       " rctrls absent\n", 0, 0, 0 );
-#endif
-       }
-
-       rc = ldap_get_dn_ber( ld, msg, &ber, &bdn );
+       rc = ldap_get_dn_ber( si->si_ld, msg, &ber, &bdn );
 
        if ( rc != LDAP_SUCCESS ) {
 #ifdef NEW_LOGGING
@@ -769,7 +950,8 @@ syncrepl_message_to_entry(
        sl_free( ndn.bv_val, op->o_tmpmemctx );
        sl_free( dn.bv_val, op->o_tmpmemctx );
 
-       if ( *syncstate == LDAP_SYNC_PRESENT || *syncstate == LDAP_SYNC_DELETE ) {
+       if ( syncstate == LDAP_SYNC_PRESENT || syncstate == LDAP_SYNC_DELETE )
+       {
                return NULL;
        }
 
@@ -841,39 +1023,30 @@ done:
        return e;
 }
 
-int
-syncuuid_cmp( const void* v_uuid1, const void* v_uuid2 )
-{
-       const struct berval *uuid1 = v_uuid1;
-       const struct berval *uuid2 = v_uuid2;
-       int rc = uuid1->bv_len - uuid2->bv_len;
-       if ( rc ) return rc;
-       return ( strcmp( uuid1->bv_val, uuid2->bv_val ) );
-}
-
 int
 syncrepl_entry(
        syncinfo_t* si,
-       LDAP *ld,
        Operation *op,
        Entry* e,
        Modifications* modlist,
        int syncstate,
        struct berval* syncUUID,
-       struct berval* syncCookie,
-       int refresh
+       struct sync_cookie* syncCookie_req
 )
 {
        Backend *be = op->o_bd;
-       slap_callback   cb;
+       slap_callback   cb = { NULL };
        struct berval   *syncuuid_bv = NULL;
+       struct berval   syncUUID_strrep = { 0, NULL };
 
        SlapReply       rs = {REP_RESULT};
+       Filter f = {0};
+       AttributeAssertion ava = {0};
        int rc = LDAP_SUCCESS;
        int ret = LDAP_SUCCESS;
+       const char *text;
 
-       if ( refresh &&
-               ( syncstate == LDAP_SYNC_PRESENT || syncstate == LDAP_SYNC_ADD ))
+       if (( syncstate == LDAP_SYNC_PRESENT || syncstate == LDAP_SYNC_ADD ))
        {
                syncuuid_bv = ber_dupbv( NULL, syncUUID );
                avl_insert( &si->si_presentlist, (caddr_t) syncuuid_bv,
@@ -884,6 +1057,13 @@ syncrepl_entry(
                return e ? 1 : 0;
        }
 
+       f.f_choice = LDAP_FILTER_EQUALITY;
+       f.f_ava = &ava;
+       ava.aa_desc = slap_schema.si_ad_entryUUID;
+       slap_uuidstr_from_normalized( &syncUUID_strrep, syncUUID, op->o_tmpmemctx );
+       ava.aa_value = *syncUUID;
+       op->ors_filter = &f;
+
        op->ors_filterstr.bv_len = (sizeof("entryUUID=")-1) + syncUUID->bv_len;
        op->ors_filterstr.bv_val = (char *) sl_malloc(
                op->ors_filterstr.bv_len + 1, op->o_tmpmemctx ); 
@@ -892,10 +1072,6 @@ syncrepl_entry(
                syncUUID->bv_val, syncUUID->bv_len );
        op->ors_filterstr.bv_val[op->ors_filterstr.bv_len] = '\0';
 
-       si->si_e = e;
-       si->si_syncUUID_ndn = NULL;
-
-       op->ors_filter = str2filter_x( op, op->ors_filterstr.bv_val );
        op->ors_scope = LDAP_SCOPE_SUBTREE;
 
        /* get syncrepl cookie of shadow replica from subentry */
@@ -907,11 +1083,10 @@ syncrepl_entry(
        cb.sc_response = dn_callback;
        cb.sc_private = si;
 
-       si->si_syncUUID_ndn = NULL;
+       si->si_syncUUID_ndn.bv_val = NULL;
 
        rc = be->be_search( op, &rs );
 
-       if ( op->ors_filter ) filter_free_x( op, op->ors_filter );
        if ( op->ors_filterstr.bv_val ) {
                sl_free( op->ors_filterstr.bv_val, op->o_tmpmemctx );
        }
@@ -919,13 +1094,26 @@ syncrepl_entry(
        cb.sc_response = null_callback;
        cb.sc_private = si;
 
-       if ( rc == LDAP_SUCCESS && si->si_syncUUID_ndn &&
-               si->si_sync_mode != LDAP_SYNC_LOG_MODE )
+       if ( rc == LDAP_SUCCESS && si->si_syncUUID_ndn.bv_val )
        {
-               op->o_req_dn = *si->si_syncUUID_ndn;
-               op->o_req_ndn = *si->si_syncUUID_ndn;
+               char *subseq_ptr;
+
+               if ( syncstate != LDAP_SYNC_DELETE ) {
+                       op->o_no_psearch = 1;
+               }
+
+               ber_dupbv( &op->o_sync_csn, syncCookie_req->ctxcsn );
+               if ( op->o_sync_csn.bv_val ) {
+                       subseq_ptr = strstr( op->o_sync_csn.bv_val, "#0000" );
+                       subseq_ptr += 4;
+                       *subseq_ptr = '1';
+               }
+               
+               op->o_req_dn = si->si_syncUUID_ndn;
+               op->o_req_ndn = si->si_syncUUID_ndn;
                op->o_tag = LDAP_REQ_DELETE;
                rc = be->be_delete( op, &rs );
+               op->o_no_psearch = 0;
        }
 
        switch ( syncstate ) {
@@ -936,8 +1124,8 @@ syncrepl_entry(
                         rc == LDAP_NO_SUCH_OBJECT )
                {
                        attr_delete( &e->e_attrs, slap_schema.si_ad_entryUUID );
-                       attr_merge_normalize_one( e, slap_schema.si_ad_entryUUID,
-                               syncUUID, op->o_tmpmemctx );
+                       attr_merge_one( e, slap_schema.si_ad_entryUUID,
+                               syncUUID, &ava.aa_value );
 
                        op->o_tag = LDAP_REQ_ADD;
                        op->ora_e = e;
@@ -952,7 +1140,6 @@ syncrepl_entry(
                                        op->o_req_dn = e->e_name;
                                        op->o_req_ndn = e->e_nname;
                                        rc = be->be_modify( op, &rs );
-                                       si->si_e = NULL;
                                        if ( rc != LDAP_SUCCESS ) {
 #ifdef NEW_LOGGING
                                                LDAP_LOG( OPERATION, ERR,
@@ -967,10 +1154,7 @@ syncrepl_entry(
                                        ret = 1;
                                        goto done;
                                } else if ( rc == LDAP_REFERRAL || rc == LDAP_NO_SUCH_OBJECT ) {
-                                       syncrepl_add_glue( si, ld, op, e,
-                                               modlist, syncstate,
-                                               syncUUID, syncCookie);
-                                       si->si_e = NULL;
+                                       syncrepl_add_glue( op, e );
                                        ret = 0;
                                        goto done;
                                } else {
@@ -983,12 +1167,10 @@ syncrepl_entry(
                                                "syncrepl_entry : be_add failed (%d)\n",
                                                rc, 0, 0 );
 #endif
-                                       si->si_e = NULL;
                                        ret = 1;
                                        goto done;
                                }
                        } else {
-                               si->si_e = NULL;
                                be_entry_release_w( op, e );
                                ret = 0;
                                goto done;
@@ -1001,21 +1183,12 @@ syncrepl_entry(
                        Debug( LDAP_DEBUG_ANY,
                                "syncrepl_entry : be_search failed (%d)\n", rc, 0, 0 );
 #endif
-                       si->si_e = NULL;
                        ret = 1;
                        goto done;
                }
 
        case LDAP_SYNC_DELETE :
-               if ( si->si_sync_mode == LDAP_SYNC_LOG_MODE ) {
-                       if ( si->si_syncUUID_ndn ) {
-                               op->o_req_dn = *si->si_syncUUID_ndn;
-                               op->o_req_ndn = *si->si_syncUUID_ndn;
-                               op->o_tag = LDAP_REQ_DELETE;
-                               rc = be->be_delete( op, &rs );
-                       }
-               }
-               /* Already deleted otherwise */
+               /* Already deleted */
                ret = 1;
                goto done;
 
@@ -1033,21 +1206,23 @@ syncrepl_entry(
 
 done :
 
-       if ( si->si_syncUUID_ndn ) {
-               ber_bvfree( si->si_syncUUID_ndn );
+       if ( syncUUID_strrep.bv_val ) {
+               ber_memfree_x( syncUUID_strrep.bv_val, op->o_tmpmemctx );
+       }
+       if ( si->si_syncUUID_ndn.bv_val ) {
+               ber_memfree_x( si->si_syncUUID_ndn.bv_val, op->o_tmpmemctx );
        }
        return ret;
 }
 
 static void
 syncrepl_del_nonpresent(
-       LDAP *ld,
        Operation *op,
        syncinfo_t *si
 )
 {
        Backend* be = op->o_bd;
-       slap_callback   cb;
+       slap_callback   cb = { NULL };
        SlapReply       rs = {REP_RESULT};
        struct nonpresent_entry *np_list, *np_prev;
 
@@ -1106,18 +1281,12 @@ static struct berval gcbva[] = {
 
 void
 syncrepl_add_glue(
-       syncinfo_t *si,
-       LDAP *ld,
        Operation* op,
-       Entry *e,
-       Modifications* modlist,
-       int syncstate,
-       struct berval* syncUUID,
-       struct berval* syncCookie
+       Entry *e
 )
 {
        Backend *be = op->o_bd;
-       slap_callback cb;
+       slap_callback cb = { NULL };
        Attribute       *a;
        int     rc;
        int suffrdns;
@@ -1131,7 +1300,7 @@ syncrepl_add_glue(
        op->o_tag = LDAP_REQ_ADD;
        op->o_callback = &cb;
        cb.sc_response = null_callback;
-       cb.sc_private = si;
+       cb.sc_private = NULL;
 
        dn = e->e_name;
        ndn = e->e_nname;
@@ -1266,10 +1435,9 @@ static struct berval scbva[] = {
 void
 syncrepl_updateCookie(
        syncinfo_t *si,
-       LDAP *ld,
        Operation *op,
        struct berval *pdn,
-       struct berval *syncCookie
+       struct sync_cookie *syncCookie
 )
 {
        Backend *be = op->o_bd;
@@ -1290,19 +1458,11 @@ syncrepl_updateCookie(
        struct berval slap_syncrepl_dn_bv = BER_BVNULL;
        struct berval slap_syncrepl_cn_bv = BER_BVNULL;
        
-       slap_callback cb;
+       slap_callback cb = { NULL };
        SlapReply       rs = {REP_RESULT};
 
-       struct berval *dup_syncCookie = NULL;
-
-       /* update in memory cookie */
-       ber_bvarray_free_x( si->si_syncCookie, op->o_tmpmemctx );
-       si->si_syncCookie = NULL;
-
-       /* ber_bvarray_add() doesn't have dup option */
-       dup_syncCookie = ber_dupbv_x( NULL, syncCookie, op->o_tmpmemctx );
-       ber_bvarray_add_x( &si->si_syncCookie, dup_syncCookie, op->o_tmpmemctx );
-       op->o_tmpfree( dup_syncCookie, op->o_tmpmemctx );
+       slap_sync_cookie_free( &si->si_syncCookie, 0 );
+       slap_dup_sync_cookie( &si->si_syncCookie, syncCookie );
 
        mod = (Modifications *) ch_calloc( 1, sizeof( Modifications ));
        mod->sml_op = LDAP_MOD_REPLACE;
@@ -1313,10 +1473,10 @@ syncrepl_updateCookie(
        modtail = &mod->sml_next;
 
        ber_dupbv( &cnbva[0], (struct berval *) &slap_syncrepl_bvc );
-       assert( si->si_id < 1000 );
+       assert( si->si_rid < 1000 );
        cnbva[0].bv_len = snprintf( cnbva[0].bv_val,
                slap_syncrepl_bvc.bv_len,
-               "syncrepl%d", si->si_id );
+               "syncrepl%ld", si->si_rid );
        mod = (Modifications *) ch_calloc( 1, sizeof( Modifications ));
        mod->sml_op = LDAP_MOD_REPLACE;
        mod->sml_desc = slap_schema.si_ad_cn;
@@ -1326,7 +1486,7 @@ syncrepl_updateCookie(
        modtail = &mod->sml_next;
 
        if ( scbva[0].bv_val ) ch_free( scbva[0].bv_val );
-       ber_dupbv( &scbva[0], &si->si_syncCookie[0] );
+       ber_dupbv( &scbva[0], &si->si_syncCookie.octet_str[0] );
        mod = (Modifications *) ch_calloc( 1, sizeof( Modifications ));
        mod->sml_op = LDAP_MOD_REPLACE;
        mod->sml_desc = slap_schema.si_ad_syncreplCookie;
@@ -1366,10 +1526,10 @@ syncrepl_updateCookie(
        e = ( Entry * ) ch_calloc( 1, sizeof( Entry ));
 
        slap_syncrepl_cn_bv.bv_val = syncrepl_cbuf;
-       assert( si->si_id < 1000 );
+       assert( si->si_rid < 1000 );
        slap_syncrepl_cn_bv.bv_len = snprintf( slap_syncrepl_cn_bv.bv_val,
                slap_syncrepl_cn_bvc.bv_len,
-               "cn=syncrepl%d", si->si_id );
+               "cn=syncrepl%ld", si->si_rid );
 
        build_new_dn( &slap_syncrepl_dn_bv, pdn, &slap_syncrepl_cn_bv,
                op->o_tmpmemctx );
@@ -1481,18 +1641,6 @@ done :
        return;
 }
 
-void
-avl_ber_bvfree( void *bv )
-{
-       if( bv == NULL ) {
-               return;
-       }
-       if ( ((struct berval *)bv)->bv_val != NULL ) {
-               ch_free ( ((struct berval *)bv)->bv_val );
-       }
-       ch_free ( (char *) bv );
-}
-
 static int
 dn_callback(
        Operation*      op,
@@ -1502,7 +1650,7 @@ dn_callback(
        syncinfo_t *si = op->o_callback->sc_private;
 
        if ( rs->sr_type == REP_SEARCH ) {
-               if ( si->si_syncUUID_ndn != NULL ) {
+               if ( si->si_syncUUID_ndn.bv_val != NULL ) {
 #ifdef NEW_LOGGING
                        LDAP_LOG( OPERATION, ERR,
                                "dn_callback : multiple entries match dn\n", 0, 0, 0 );
@@ -1511,11 +1659,7 @@ dn_callback(
                                "dn_callback : multiple entries match dn\n", 0, 0, 0 );
 #endif
                } else {
-                       if ( rs->sr_entry == NULL ) {
-                               si->si_syncUUID_ndn = NULL;
-                       } else {
-                               si->si_syncUUID_ndn = ber_dupbv( NULL, &rs->sr_entry->e_nname );
-                       }
+                       ber_dupbv_x( &si->si_syncUUID_ndn, &rs->sr_entry->e_nname, op->o_tmpmemctx );
                }
        }
 
@@ -1622,3 +1766,83 @@ slap_create_syncrepl_entry(
 
        return e;
 }
+
+struct berval *
+slap_uuidstr_from_normalized(
+       struct berval* uuidstr,
+       struct berval* normalized,
+       void *ctx )
+{
+       struct berval *new;
+       unsigned char nibble;
+       int i, d = 0;
+
+       if ( normalized == NULL )
+               return NULL;
+
+       if ( normalized->bv_len != 16 ) {
+               return NULL;
+       }
+
+       if ( uuidstr ) {
+               new = uuidstr;
+       } else {
+               new = (struct berval *)sl_malloc( sizeof(struct berval), ctx );
+       }
+
+       new->bv_len = 36;
+
+       if (( new->bv_val = sl_malloc( new->bv_len + 1, ctx )) == NULL) {
+               if ( !uuidstr )
+                       sl_free( new, ctx );
+               return NULL;
+       }
+
+       for ( i = 0; i < 16; i++ ) {
+               if ( i == 4 || i == 6 || i == 8 || i == 10 ) {
+                       new->bv_val[(i<<1)+d] = '-';
+                       d += 1;
+               }
+
+               nibble = (normalized->bv_val[i] >> 4) & 0xF;
+               if ( nibble < 10 ) {
+                       new->bv_val[(i<<1)+d] = nibble + '0';
+               } else {
+                       new->bv_val[(i<<1)+d] = nibble - 10 + 'a';
+               }
+
+               nibble = (normalized->bv_val[i]) & 0xF;
+               if ( nibble < 10 ) {
+                       new->bv_val[(i<<1)+d+1] = nibble + '0';
+               } else {
+                       new->bv_val[(i<<1)+d+1] = nibble - 10 + 'a';
+               }
+       }
+
+       new->bv_val[new->bv_len] = '\0';
+
+       return new;
+}
+
+static int
+syncuuid_cmp( const void* v_uuid1, const void* v_uuid2 )
+{
+       const struct berval *uuid1 = v_uuid1;
+       const struct berval *uuid2 = v_uuid2;
+       int rc = uuid1->bv_len - uuid2->bv_len;
+       if ( rc ) return rc;
+       return ( strcmp( uuid1->bv_val, uuid2->bv_val ) );
+}
+
+static void
+avl_ber_bvfree( void *bv )
+{
+       if( bv == NULL ) {
+               return;
+       }
+       if ( ((struct berval *)bv)->bv_val != NULL ) {
+               ch_free ( ((struct berval *)bv)->bv_val );
+       }
+       ch_free ( (char *) bv );
+}
+