]> git.sur5r.net Git - openldap/blobdiff - servers/slapd/syncrepl.c
Import ITS#4158 fixes from HEAD
[openldap] / servers / slapd / syncrepl.c
index 4c0629a9a9fb0311c9dd21a6967e5cdbd3e39a39..fbdf1d86fc6183c89fa7a1b11ddc7317bc8d0d3b 100644 (file)
@@ -1,23 +1,19 @@
+/* syncrepl.c -- Replication Engine which uses the LDAP Sync protocol */
 /* $OpenLDAP$ */
-/*
- * Replication Engine which uses the LDAP Sync protocol
- */
-/* Copyright (c) 2003 by International Business Machines, Inc.
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2003-2005 The OpenLDAP Foundation.
+ * Portions Copyright 2003 by IBM Corporation.
+ * Portions Copyright 2003 by Howard Chu, Symas Corporation.
+ * All rights reserved.
  *
- * 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.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
  *
- * 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.
+ * 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 <ac/string.h>
 #include <ac/socket.h>
-#include <db.h>
 
 #include "ldap_pvt.h"
 #include "lutil.h"
 #include "slap.h"
 #include "lutil_ldap.h"
 
-#ifdef LDAP_SYNCREPL
-
 #include "ldap_rq.h"
 
-static Entry*
-syncrepl_message_to_entry ( LDAP *, Operation *, LDAPMessage *,
-               Modifications **, int*, struct berval *, struct berval * );
-
-static int
-syncrepl_entry( LDAP *, Operation*, Entry*, Modifications*,
-               int, struct berval*, struct berval*, int );
-
-static int
-syncrepl_del_nonpresent( LDAP *, Operation * );
-
-static void
-syncrepl_add_glue( LDAP *, Operation*, Entry*, Modifications*, int,
-                  struct berval*, struct berval* );
-
-static void
-syncrepl_updateCookie( LDAP *, Operation *, struct berval *, struct berval * );
-
-static int
-slap_mods_check_syncrepl( Operation *, Modifications **,
-                         const char **, char *, size_t, void *ctx );
+#define SYNCREPL_STR   "syncreplxxx"
+#define CN_STR "cn="
 
-static int
-slap_mods_opattrs_syncrepl( Operation *, Modifications *, Modifications **,
-                               const char **, char *, size_t );
+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 int
-slap_mods2entry_syncrepl( Modifications *, Entry **, int,
-                         const char **, char *, size_t );
+static int syncuuid_cmp( const void *, const void * );
+static void avl_ber_bvfree( void * );
+static void syncrepl_del_nonpresent( Operation *, syncinfo_t *, BerVarray );
 
 /* callback functions */
-static int cookie_callback( struct slap_op *, struct slap_rep * );
 static int dn_callback( struct slap_op *, struct slap_rep * );
 static int nonpresent_callback( struct slap_op *, struct slap_rep * );
 static int null_callback( struct slap_op *, struct slap_rep * );
 
-static AttributeDescription **add_descs;
-static AttributeDescription **add_descs_lastmod;
-static AttributeDescription **del_descs;
-static AttributeDescription **del_descs_lastmod;
+static AttributeDescription *sync_descs[4];
+
+static AttributeName anlist_no_attrs[] = {
+       { BER_BVC( LDAP_NO_ATTRS ) },
+       { BER_BVNULL }
+};
+
+static AttributeName anlist_all_attrs[] = {
+       { BER_BVC( LDAP_ALL_USER_ATTRIBUTES ) },
+       { BER_BVC( LDAP_ALL_OPERATIONAL_ATTRIBUTES ) },
+       { BER_BVNULL }
+};
 
 struct runqueue_s syncrepl_rq;
 
 void
-init_syncrepl()
-{
-       add_descs = ch_malloc( 2 * sizeof( AttributeDescription * ));
-       add_descs[0] = slap_schema.si_ad_objectClass;
-       add_descs[1] = NULL;
-
-       add_descs_lastmod = ch_malloc( 7 * sizeof( AttributeDescription * ));
-       add_descs_lastmod[0] = slap_schema.si_ad_objectClass;
-       add_descs_lastmod[1] = slap_schema.si_ad_creatorsName;
-       add_descs_lastmod[2] = slap_schema.si_ad_modifiersName;
-       add_descs_lastmod[3] = slap_schema.si_ad_createTimestamp;
-       add_descs_lastmod[4] = slap_schema.si_ad_modifyTimestamp;
-       add_descs_lastmod[5] = slap_schema.si_ad_entryCSN;
-       add_descs_lastmod[6] = NULL;
-
-       del_descs = ch_malloc( 9 * sizeof( AttributeDescription * ));
-       del_descs[0] = slap_schema.si_ad_structuralObjectClass;
-       del_descs[1] = slap_schema.si_ad_subschemaSubentry;
-       del_descs[2] = slap_schema.si_ad_hasSubordinates;
-       del_descs[3] = slap_schema.si_ad_creatorsName;
-       del_descs[4] = slap_schema.si_ad_modifiersName;
-       del_descs[5] = slap_schema.si_ad_createTimestamp;
-       del_descs[6] = slap_schema.si_ad_modifyTimestamp;
-       del_descs[7] = slap_schema.si_ad_entryCSN;
-       del_descs[8] = NULL;
-
-       del_descs_lastmod = ch_malloc( 4 * sizeof( AttributeDescription * ));
-       del_descs_lastmod[0] = slap_schema.si_ad_structuralObjectClass;
-       del_descs_lastmod[1] = slap_schema.si_ad_subschemaSubentry;
-       del_descs_lastmod[2] = slap_schema.si_ad_hasSubordinates;
-       del_descs_lastmod[3] = NULL;
-}
-
-void *
-do_syncrepl(
-       void    *ctx,
-       void    *arg )
+init_syncrepl(syncinfo_t *si)
 {
-       struct re_s* rtask = arg;
-       Backend *be = rtask->arg;
-       syncinfo_t *si = ( syncinfo_t * ) be->syncinfo;
+       int i, j, k, n;
+       char **tmp;
 
-       SlapReply       rs = {REP_RESULT};
+       if ( !sync_descs[0] ) {
+               sync_descs[0] = slap_schema.si_ad_objectClass;
+               sync_descs[1] = slap_schema.si_ad_structuralObjectClass;
+               sync_descs[2] = slap_schema.si_ad_entryCSN;
+               sync_descs[3] = NULL;
+       }
 
-       LDAPControl     c[2];
-       LDAPControl     **sctrls = NULL;
-       LDAPControl     **rctrls = NULL;
-       LDAPControl     *rctrlp = NULL;
-       BerElement      *sync_ber = NULL;
-       struct berval   *sync_bvalp = NULL;
+       for ( n = 0; si->si_attrs[ n ] != NULL; n++ ) /* empty */;
+
+       if ( n ) {
+               /* Delete Attributes */
+               for ( i = 0; sync_descs[i] != NULL; i++ ) {
+                       for ( j = 0; si->si_attrs[j] != NULL; j++ ) {
+                               if ( strcmp( si->si_attrs[j], sync_descs[i]->ad_cname.bv_val )
+                                       == 0 )
+                               {
+                                       ch_free( si->si_attrs[j] );
+                                       for ( k = j; si->si_attrs[k] != NULL; k++ ) {
+                                               si->si_attrs[k] = si->si_attrs[k+1];
+                                       }
+                               }
+                       }
+               }
+               for ( n = 0; si->si_attrs[ n ] != NULL; n++ ) /* empty */;
+               tmp = ( char ** ) ch_realloc( si->si_attrs, (n + 4)*sizeof( char * ));
+               if ( tmp == NULL ) {
+#ifdef NEW_LOGGING
+                       LDAP_LOG( OPERATION, ERR, "out of memory\n", 0,0,0 );
+#else
+                       Debug( LDAP_DEBUG_ANY, "out of memory\n", 0,0,0 );
+#endif
+               }
 
-       BerElement      *ctrl_ber = NULL;
-       BerElement      *res_ber = NULL;
+               /* Add Attributes */
+               for ( i = 0; sync_descs[ i ] != NULL; i++ ) {
+                       tmp[ n++ ] = ch_strdup ( sync_descs[i]->ad_cname.bv_val );
+                       tmp[ n ] = NULL;
+               }
 
-       LDAP    *ld = NULL;
-       LDAPMessage     *res = NULL;
-       LDAPMessage     *msg = NULL;
+       } else {
+               tmp = ( char ** ) ch_realloc( si->si_attrs, 3 * sizeof( char * ));
+               if ( tmp == NULL ) {
+#ifdef NEW_LOGGING
+                       LDAP_LOG( OPERATION, ERR, "out of memory\n", 0,0,0 );
+#else
+                       Debug( LDAP_DEBUG_ANY, "out of memory\n", 0,0,0 );
+#endif
+               }
+               tmp[ n++ ] = ch_strdup( "*" );
+               tmp[ n++ ] = ch_strdup( "+" );
+               tmp[ n ] = NULL;
+       }
+       
+       si->si_attrs = tmp;
+
+       for ( n = 0; si->si_exattrs[ n ] != NULL; n++ ) /* empty */;
+       if ( n ) {
+               /* Delete Attributes from exattrs list */
+               for ( i = 0; sync_descs[i] != NULL; i++ ) {
+                       for ( j = 0; si->si_exattrs[j] != NULL; j++ ) {
+                               if ( strcmp( si->si_exattrs[j], sync_descs[i]->ad_cname.bv_val )
+                                       == 0 )
+                               {
+                                       ch_free( si->si_exattrs[j] );
+                                       for ( k = j; si->si_exattrs[k] != NULL; k++ ) {
+                                               si->si_exattrs[k] = si->si_exattrs[k+1];
+                                       }
+                               }
+                       }
+               }
+       }
+}
 
+static int
+ldap_sync_search(
+       syncinfo_t *si,
+       void *ctx
+)
+{
+       BerElementBuffer berbuf;
+       BerElement *ber = (BerElement *)&berbuf;
+       LDAPControl c[2], *ctrls[3];
+       struct timeval timeout;
        ber_int_t       msgid;
+       int rc;
 
-       int             nresponses, nreferences, nextended, npartial;
-       int             nresponses_psearch;
+       /* setup LDAP SYNC control */
+       ber_init2( ber, NULL, LBER_USE_DER );
+       ber_set_option( ber, LBER_OPT_BER_MEMCTX, &ctx );
 
-       int             cancel_msgid = -1;
-       char            *retoid = NULL;
-       struct berval   *retdata = NULL;
+       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) );
+       }
 
-       int             sync_info_arrived = 0;
-       Entry           *entry = NULL;
+       if ( (rc = ber_flatten2( ber, &c[0].ldctl_value, 0 )) == LBER_ERROR ) {
+               ber_free_buf( ber );
+               return rc;
+       }
 
-       int             syncstate;
-       struct berval   syncUUID = { 0, NULL };
-       struct berval   syncCookie = { 0, NULL };
+       c[0].ldctl_oid = LDAP_CONTROL_SYNC;
+       c[0].ldctl_iscritical = si->si_type < 0;
+       ctrls[0] = &c[0];
 
-       int     rc;
-       int     err;
-       ber_len_t       len;
-       int     syncinfo_arrived = 0;
-       int     cancel_response = 0;
+       if ( si->si_authzId ) {
+               c[1].ldctl_oid = LDAP_CONTROL_PROXY_AUTHZ;
+               ber_str2bv( si->si_authzId, 0, 0, &c[1].ldctl_value );
+               c[1].ldctl_iscritical = 1;
+               ctrls[1] = &c[1];
+               ctrls[2] = NULL;
+       } else {
+               ctrls[1] = NULL;
+       }
 
-       char **tmp = NULL;
-       AttributeDescription** descs = NULL;
+       timeout.tv_sec = si->si_tlimit;
+       timeout.tv_usec = 0;
 
-       Connection conn;
-       Operation op = {0};
-       slap_callback   cb;
+       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 ? &timeout : NULL,
+               si->si_slimit, &msgid );
+       ber_free_buf( ber );
 
-       void *memctx = NULL;
-       ber_len_t memsiz;
-       
-       int i, j, k, n;
-       int rc_efree;
-
-       struct berval base_bv = { 0, NULL };
-       struct berval pbase = { 0, NULL };
-       struct berval nbase = { 0, NULL };
-       struct berval sub_bv = { 0, NULL };
-       struct berval psubrdn = { 0, NULL };
-       struct berval nsubrdn = { 0, NULL };
-       struct berval psub = { 0, NULL };
-       struct berval nsub = { 0, NULL };
-       char substr[64];
-       Modifications   *modlist = NULL;
-       Modifications   *ml, *mlnext;
-       char *def_filter_str = NULL;
+       return rc;
+}
 
-#ifdef NEW_LOGGING
-       LDAP_LOG ( OPERATION, DETAIL1, "do_syncrepl\n", 0, 0, 0 );
-#else
-       Debug( LDAP_DEBUG_TRACE, "=>do_syncrepl\n", 0, 0, 0 );
+static int
+do_syncrep1(
+       Operation *op,
+       syncinfo_t *si )
+{
+       int     rc;
+       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;
+#ifdef HAVE_TLS
+       void    *ssl;
 #endif
 
-       if ( si == NULL )
-               return NULL;
-
-       if ( abs(si->type) != LDAP_SYNC_REFRESH_ONLY &&
-            abs(si->type) != LDAP_SYNC_REFRESH_AND_PERSIST ) {
-               return NULL;
-       }
+       psub = &si->si_be->be_nsuffix[0];
 
        /* Init connection to master */
 
-       if ( ldap_is_ldap_url( si->masteruri )) {
-               rc = ldap_initialize( &ld, si->masteruri );
-               if ( rc != LDAP_SUCCESS ) {
-#ifdef NEW_LOGGING
-                       LDAP_LOG( OPERATION, ERR, "do_syncrepl: "
-                               "ldap_initialize failed (%s)\n",
-                               si->masteruri, 0, 0 );
-#else
-                       Debug( LDAP_DEBUG_ANY, "do_syncrepl: "
-                               "ldap_initialize failed (%s)\n",
-                               si->masteruri, 0, 0 );
-#endif
-               }
-       } else {
-               ld = ldap_init( si->mastername, si->masterport );
-               if ( ld == NULL ) {
+       rc = ldap_initialize( &si->si_ld, si->si_provideruri );
+       if ( rc != LDAP_SUCCESS ) {
 #ifdef NEW_LOGGING
-                       LDAP_LOG( OPERATION, ERR, "do_syncrepl: "
-                               "ldap_init failed (%s:%d)\n",
-                               si->mastername, si->masterport, 0 );
+               LDAP_LOG( OPERATION, ERR,
+                       "do_syncrep1: ldap_initialize failed (%s)\n",
+                       si->si_provideruri, 0, 0 );
 #else
-                       Debug( LDAP_DEBUG_ANY, "do_syncrepl: "
-                               "ldap_init failed (%s:%d)\n",
-                               si->mastername, si->masterport, 0 );
+               Debug( LDAP_DEBUG_ANY,
+                       "do_syncrep1: ldap_initialize failed (%s)\n",
+                       si->si_provideruri, 0, 0 );
 #endif
-               }
+               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->tls ) {
-               rc = ldap_start_tls_s( ld, NULL, NULL );
+       if ( si->si_tls ) {
+               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->tls == TLS_CRITICAL ? "Error" : "Warning",
+                               si->si_tls == SYNCINFO_TLS_CRITICAL ? "Error" : "Warning",
                                rc, 0 );
 #else
                        Debug( LDAP_DEBUG_ANY,
                                "%s: ldap_start_tls failed (%d)\n",
-                               si->tls == TLS_CRITICAL ? "Error" : "Warning",
+                               si->si_tls == SYNCINFO_TLS_CRITICAL ? "Error" : "Warning",
                                rc, 0 );
 #endif
-                       if( si->tls == TLS_CRITICAL )
-                               return NULL;
+                       if( si->si_tls == SYNCINFO_TLS_CRITICAL ) goto done;
                }
        }
 
-       if ( si->bindmethod == LDAP_AUTH_SASL ) {
+       if ( si->si_bindmethod == LDAP_AUTH_SASL ) {
 #ifdef HAVE_CYRUS_SASL
                void *defaults;
 
-               if ( si->secprops != NULL ) {
-                       int err = ldap_set_option( ld,
-                                       LDAP_OPT_X_SASL_SECPROPS, si->secprops);
+               if ( si->si_secprops != NULL ) {
+                       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",
-                                       si->mastername, si->secprops, 0 );
+                                       si->si_provideruri, si->si_secprops, 0 );
 #else
                                Debug( LDAP_DEBUG_ANY, "Error: ldap_set_option "
                                        "(%s,SECPROPS,\"%s\") failed!\n",
-                                       si->mastername, si->secprops, NULL );
+                                       si->si_provideruri, si->si_secprops, 0 );
 #endif
-                               return NULL;
+                               goto done;
                        }
                }
 
-               defaults = lutil_sasl_defaults( ld,
-                               si->saslmech,
-                               si->realm,
-                               si->authcId,
-                               si->passwd,
-                               si->authzId );
+               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,
-                               si->binddn,
-                               si->saslmech,
+               rc = ldap_sasl_interactive_bind_s( si->si_ld,
+                               si->si_binddn,
+                               si->si_saslmech,
                                NULL, NULL,
-                               LDAP_SASL_AUTOMATIC,
+                               LDAP_SASL_QUIET,
                                lutil_sasl_interact,
                                defaults );
 
+               lutil_sasl_freedefs( defaults );
+
+               /* FIXME: different error behaviors according to
+                *      1) return code
+                *      2) on err policy : exit, retry, backoff ...
+                */
                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;
+
+                       /* FIXME (see above comment) */
+                       /* if Kerberos credentials cache is not active, retry */
+                       if ( si->si_saslmech && !strcmp( si->si_saslmech, "GSSAPI" ) &&
+                               rc == LDAP_LOCAL_ERROR )
+                       {
+                               rc = LDAP_SERVER_DOWN;
+                       }
+
+                       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->binddn, si->passwd, 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;
                }
        }
 
-       si->ctx = ctx;
-
-       op.o_tmpmemctx = NULL; /* FIXME : to use per-thread mem context */
-       op.o_tmpmfuncs = &ch_mfuncs;
-       op.o_tag = LDAP_REQ_SEARCH;
-       op.o_dn = si->updatedn;
-       op.o_ndn = si->updatedn;
-       op.o_callback = &cb;
-       op.o_time = slap_get_time();
-       op.o_managedsait = 1;
-       op.o_threadctx = si->ctx;
-       op.o_bd = be;
-       op.o_conn = &conn;
-       op.o_connid = op.o_conn->c_connid;
-       op.ors_scope = LDAP_SCOPE_BASE;
-       op.ors_deref = LDAP_DEREF_NEVER;
-       op.ors_slimit = -1;
-       op.ors_tlimit = -1;
-       op.ors_attrsonly = 0;
-       op.ors_attrs = NULL;
-       op.ors_filter = str2filter( def_filter_str = "(objectClass=*)" );
-       ber_str2bv( def_filter_str, strlen( def_filter_str ), 1,
-                               &op.ors_filterstr );
-
-       si->conn = &conn;
-       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;
+       /* Set SSF to strongest of TLS, SASL SSFs */
+       op->o_sasl_ssf = 0;
+       op->o_tls_ssf = 0;
+       op->o_transport_ssf = 0;
+#ifdef HAVE_TLS
+       if ( ldap_get_option( si->si_ld, LDAP_OPT_X_TLS_SSL_CTX, &ssl )
+               == LDAP_SUCCESS && ssl != NULL )
+       {
+               op->o_tls_ssf = ldap_pvt_tls_get_strength( ssl );
+       }
+#endif /* HAVE_TLS */
+       ldap_get_option( si->si_ld, LDAP_OPT_X_SASL_SSF, &op->o_sasl_ssf );
+       op->o_ssf = ( op->o_sasl_ssf > op->o_tls_ssf )
+               ?  op->o_sasl_ssf : op->o_tls_ssf;
 
        /* get syncrepl cookie of shadow replica from subentry */
-       ber_str2bv( si->base, strlen(si->base), 1, &base_bv ); 
-       dnPrettyNormal( 0, &base_bv, &pbase, &nbase, op.o_tmpmemctx );
 
-       sprintf( substr, "cn=syncrepl%d", si->id );
-       ber_str2bv( substr, strlen(substr), 1, &sub_bv );
-       dnPrettyNormal( 0, &sub_bv, &psubrdn, &nsubrdn, op.o_tmpmemctx );
-
-       build_new_dn( &op.o_req_dn, &pbase, &psubrdn );
-       build_new_dn( &op.o_req_ndn, &nbase, &nsubrdn );
+       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%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;
+
+       LDAP_STAILQ_FOREACH( sc, &slap_sync_cookie, sc_next ) {
+               if ( si->si_rid == sc->rid ) {
+                       cmdline_cookie_found = 1;
+                       break;
+               }
+       }
 
-       ch_free( base_bv.bv_val );
-       ch_free( pbase.bv_val );
-       ch_free( nbase.bv_val );
-       ch_free( sub_bv.bv_val );
-       ch_free( psubrdn.bv_val );
-       ch_free( nsubrdn.bv_val );
+       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, ACL_READ );
+
+               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 = BER_BVNULL;
+                       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, ACL_READ );
+                       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 );
+                       }
+               }
+       }
 
-       /* set callback function */
-       cb.sc_response = cookie_callback;
-       cb.sc_private = si;
+       rc = ldap_sync_search( si, op->o_tmpmemctx );
 
-       /* search subentry to retrieve cookie */
-       si->syncCookie = NULL;
-       be->be_search( &op, &rs );
+       if( rc != LDAP_SUCCESS ) {
+#ifdef NEW_LOGGING
+               LDAP_LOG ( OPERATION, ERR, "do_syncrep1: "
+                       "ldap_search_ext: %s (%d)\n", ldap_err2string( rc ), rc, 0 );
+#else
+               Debug( LDAP_DEBUG_ANY, "do_syncrep1: "
+                       "ldap_search_ext: %s (%d)\n", ldap_err2string( rc ), rc, 0 );
+#endif
+       }
 
-       ch_free( op.o_req_dn.bv_val );
-       ch_free( op.o_req_ndn.bv_val );
-       filter_free( op.ors_filter );
-       ch_free( op.ors_filterstr.bv_val );
+done:
+       if ( rc ) {
+               if ( si->si_ld ) {
+                       ldap_unbind( si->si_ld );
+                       si->si_ld = NULL;
+               }
+       }
 
-       psub = be->be_nsuffix[0];
+       slap_sl_free( op->o_req_ndn.bv_val, op->o_tmpmemctx );
 
-       /* setup LDAP SYNC control */
-       sync_ber = ber_alloc_t( LBER_USE_DER );
-       ber_set_option( sync_ber, LBER_OPT_BER_MEMCTX, op.o_tmpmemctx );
+       return rc;
+}
 
-       if ( si->syncCookie ) {
-               ber_printf( sync_ber, "{eO}", abs(si->type), si->syncCookie );
-       } else {
-               ber_printf( sync_ber, "{e}", abs(si->type) );
-       }
+static int
+do_syncrep2(
+       Operation *op,
+       syncinfo_t *si )
+{
+       LDAPControl     **rctrls = NULL;
+       LDAPControl     *rctrlp;
 
-       if ( ber_flatten( sync_ber, &sync_bvalp ) == LBER_ERROR ) {
-               ber_free( sync_ber, 1 );
-               return NULL;
-       }
-       ber_free( sync_ber, 1 );
+       BerElementBuffer berbuf;
+       BerElement      *ber = (BerElement *)&berbuf;
 
-       sctrls = (LDAPControl**) sl_calloc( 3, sizeof(LDAPControl*), op.o_tmpmemctx );
+       LDAPMessage     *res = NULL;
+       LDAPMessage     *msg = NULL;
 
-       c[0].ldctl_oid = LDAP_CONTROL_SYNC;
-       c[0].ldctl_value = (*sync_bvalp);
-       c[0].ldctl_iscritical = si->type < 0;
-       sctrls[0] = &c[0];
+       char            *retoid = NULL;
+       struct berval   *retdata = NULL;
 
-       if ( si->authzId ) {
-               c[1].ldctl_oid = LDAP_CONTROL_PROXY_AUTHZ;
-               c[1].ldctl_value.bv_val = si->authzId;
-               c[1].ldctl_value.bv_len = strlen( si->authzId );
-               c[1].ldctl_iscritical = 1;
-               sctrls[1] = &c[1];
-       } else {
-               sctrls[1] = NULL;
-       }
+       Entry           *entry = NULL;
 
-       sctrls[2] = NULL;
+       int             syncstate;
+       struct berval   syncUUID = BER_BVNULL;
+       struct sync_cookie      syncCookie = { NULL, -1, NULL };
+       struct sync_cookie      syncCookie_req = { NULL, -1, NULL };
+       struct berval           cookie = BER_BVNULL;
 
-       err = ldap_set_option( ld, LDAP_OPT_SERVER_CONTROLS, sctrls );
+       int     rc, err, i;
+       ber_len_t       len;
 
-       ber_bvfree( sync_bvalp );
-       ch_free( sctrls );
+       int rc_efree = 1;
 
-        if ( err != LDAP_OPT_SUCCESS )
-               fprintf( stderr, "Could not set controls : %d\n", err );
+       struct berval   *psub;
+       Modifications   *modlist = NULL;
 
-       /* Delete Attributes */
-       if ( si->lastmod == LASTMOD_REQ ) {
-               descs = del_descs_lastmod;
-       } else {
-               descs = del_descs;
-       }
+       const char              *text;
+       int                             match;
 
-       for ( i = 0; descs[i] != NULL; i++ ) {
-               for ( j = 0; si->attrs[j] != NULL; j++ ) {
-                       if ( !strcmp( si->attrs[j], descs[i]->ad_cname.bv_val )) {
-                               ch_free( si->attrs[j] );
-                               for ( k = j; si->attrs[k] != NULL; k++ ) {
-                                       si->attrs[k] = si->attrs[k+1];
-                               }
-                       }
-               }
-       }
+       struct timeval *tout_p = NULL;
+       struct timeval tout = { 0, 0 };
 
-       /* Add Attributes */
+       int             refreshDeletes = 0;
+       int             refreshDone = 1;
+       BerVarray syncUUIDs = NULL;
+       ber_tag_t si_tag;
 
-       for ( n = 0; si->attrs[ n ] != NULL; n++ ) ;
-       
-       if ( si->lastmod == LASTMOD_REQ ) {
-               descs = add_descs_lastmod;
-       } else {
-               descs = add_descs;
+       if ( slapd_shutdown ) {
+               rc = -2;
+               goto done;
        }
 
-       for ( i = 0; descs[i] != NULL; i++ ) {
-               tmp = ( char ** ) ch_realloc( si->attrs,
-                               ( n + 2 ) * sizeof( char * ));
-               if ( tmp == NULL ) {
+       ber_init2( ber, NULL, LBER_USE_DER );
+       ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
+
 #ifdef NEW_LOGGING
-                       LDAP_LOG( OPERATION, ERR, "out of memory\n", 0,0,0 );
+       LDAP_LOG ( OPERATION, DETAIL1, "do_syncrep2\n", 0, 0, 0 );
 #else
-                       Debug( LDAP_DEBUG_ANY, "out of memory\n", 0,0,0 );
+       Debug( LDAP_DEBUG_TRACE, "=>do_syncrep2\n", 0, 0, 0 );
 #endif
-               }
-               si->attrs = tmp;
-               si->attrs[ n++ ] = ch_strdup ( descs[i]->ad_cname.bv_val );
-               si->attrs[ n ] = NULL;
-       }
 
-       /* Send LDAP SYNC search */
+       psub = &si->si_be->be_nsuffix[0];
 
-       rc = ldap_search_ext( ld, si->base, si->scope, si->filterstr,
-                               si->attrs, si->attrsonly, NULL, NULL,
-                               NULL, -1, &msgid );
+       slap_dup_sync_cookie( &syncCookie_req, &si->si_syncCookie );
 
-        if( rc != LDAP_SUCCESS ) {
-                fprintf( stderr, "syncrepl: ldap_search_ext: %s (%d)\n",
-                                       ldap_err2string( rc ), rc );
-                return NULL;
+       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, NULL, &res )) > 0 ) {
-
-               for ( msg = ldap_first_message( ld, res );
-                     msg != NULL;
-                     msg = ldap_next_message( ld, msg ) )
+       while (( rc = ldap_result( si->si_ld, LDAP_RES_ANY, LDAP_MSG_ONE, tout_p, &res ))
+               > 0 )
+       {
+               if ( slapd_shutdown ) {
+                       rc = -2;
+                       goto done;
+               }
+               for( msg = ldap_first_message( si->si_ld, res );
+                 msg != NULL;
+                 msg = ldap_next_message( si->si_ld, msg ) )
                {
+                       if ( slapd_shutdown ) {
+                               rc = -2;
+                               goto done;
+                       }
                        switch( ldap_msgtype( msg ) ) {
                        case LDAP_RES_SEARCH_ENTRY:
-                               entry = syncrepl_message_to_entry( ld, &op, msg,
-                                       &modlist, &syncstate, &syncUUID, &syncCookie );
-                               rc_efree = syncrepl_entry( ld, &op, entry, modlist,
-                                               syncstate, &syncUUID, &syncCookie, !syncinfo_arrived );
-                               if ( syncCookie.bv_len ) {
-                                       syncrepl_updateCookie( 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 );
+                               }
+                               if ( syncrepl_message_to_entry( si, op, msg,
+                                       &modlist, &entry, syncstate ) == LDAP_SUCCESS ) {
+                                       rc_efree = syncrepl_entry( si, op, entry, &modlist,
+                                                               syncstate, &syncUUID, &syncCookie_req, syncCookie.ctxcsn );
+                                       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 );
-                               for ( ml = modlist; ml != NULL; ml = mlnext ) {
-                                       mlnext = ml->sml_next;
-                                       ber_memfree( ml );
                                }
+                               entry = NULL;
                                break;
 
                        case LDAP_RES_SEARCH_REFERENCE:
 #ifdef NEW_LOGGING
                                LDAP_LOG( OPERATION, ERR,
-                                       "do_syncrepl : reference received\n", 0, 0, 0 );
+                                       "do_syncrep2: reference received error\n", 0, 0, 0 );
 #else
                                Debug( LDAP_DEBUG_ANY,
-                                       "do_syncrepl : reference received\n", 0, 0, 0 );
+                                       "do_syncrep2: reference received error\n", 0, 0, 0 );
 #endif
                                break;
 
                        case LDAP_RES_SEARCH_RESULT:
-                               ldap_parse_result( ld, msg, &err, NULL, NULL, NULL, &rctrls, 0 );
+                               ldap_parse_result( si->si_ld, msg, &err, NULL, NULL, NULL,
+                                       &rctrls, 0 );
                                if ( rctrls ) {
                                        rctrlp = *rctrls;
-                                       ctrl_ber = ber_alloc_t( LBER_USE_DER );
-                                       ber_set_option( ctrl_ber, LBER_OPT_BER_MEMCTX, op.o_tmpmemctx );
-                                       ber_write( ctrl_ber, rctrlp->ldctl_value.bv_val, rctrlp->ldctl_value.bv_len, 0 );
-                                       ber_reset( ctrl_ber, 1 );
-
-                                       ber_scanf( ctrl_ber, "{" );
-                                       if ( ber_peek_tag( ctrl_ber, &len )
-                                               == LDAP_SYNC_TAG_COOKIE ) {
-                                               ber_scanf( ctrl_ber, "o", &syncCookie );
-                                       }
-                               }
-                               if (si->type == LDAP_SYNC_REFRESH_AND_PERSIST) {
-                                       if ( cancel_response ) {
-                                               if ( syncCookie.bv_len ) {
-                                                       ber_bvfree( si->syncCookie );
-                                                       si->syncCookie = ber_dupbv( NULL, &syncCookie );
+                                       ber_init2( ber, &rctrlp->ldctl_value, LBER_USE_DER );
+
+                                       ber_scanf( ber, "{" /*"}"*/);
+                                       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 ( ctrl_ber )
-                                                       ber_free( ctrl_ber, 1 );
-                                               goto done;
+                                               if ( syncCookie.octet_str &&
+                                                                syncCookie.octet_str[0].bv_val )
+                                                       slap_parse_sync_cookie( &syncCookie );
                                        }
-                                       else {
-                                               if ( ctrl_ber )
-                                                       ber_free( ctrl_ber, 1 );
-                                               break;
+                                       if ( ber_peek_tag( ber, &len ) == LDAP_TAG_REFRESHDELETES )
+                                       {
+                                               ber_scanf( ber, "b", &refreshDeletes );
                                        }
+                                       ber_scanf( ber, "}" );
+                               }
+                               if ( syncCookie_req.ctxcsn == NULL ) {
+                                       match = -1;
+                               } else if ( syncCookie.ctxcsn == NULL ) {
+                                       match = 1;
                                } else {
-                                       if ( syncCookie.bv_len ) {
-                                               syncrepl_updateCookie( ld, &op, &psub, &syncCookie );
+                                       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 && err == LDAP_SUCCESS ) {
+                                       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 ( refreshDeletes == 0 && match < 0 &&
+                                                err == LDAP_SUCCESS ) {
+                                               syncrepl_del_nonpresent( op, si, NULL );
+                                       } else {
+                                               avl_free( si->si_presentlist, avl_ber_bvfree );
+                                               si->si_presentlist = NULL;
                                        }
-                                       syncrepl_del_nonpresent( ld, &op );
-                                       if ( ctrl_ber )
-                                               ber_free( ctrl_ber, 1 );
-                                       goto done;
                                }
+                               rc = -2;
+                               goto done;
                                break;
 
-                       case LDAP_RES_INTERMEDIATE_RESP:
-                               ldap_parse_intermediate_resp_result( ld, msg,
-                                               &retoid, &retdata, 0 );
-                               if ( !strcmp( retoid, LDAP_SYNC_INFO ) ) {
-                                       sync_info_arrived = 1;
-                                       res_ber = ber_init( retdata );
-                                       ber_scanf( res_ber, "{e", &syncstate );
-
-                                       if ( syncstate == LDAP_SYNC_REFRESH_DONE ) {
-                                               syncrepl_del_nonpresent( ld, &op );
-                                       } else if ( syncstate != LDAP_SYNC_NEW_COOKIE ) {
+                       case LDAP_RES_INTERMEDIATE:
+                               rc = ldap_parse_intermediate( si->si_ld, msg,
+                                       &retoid, &retdata, NULL, 0 );
+                               if ( !rc && !strcmp( retoid, LDAP_SYNC_INFO ) ) {
+                                       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:
+                                       case LDAP_TAG_SYNC_REFRESH_PRESENT:
+                                               if ( si_tag == LDAP_TAG_SYNC_REFRESH_DELETE ) {
+                                                       si->si_refreshDelete = 1;
+                                               } else {
+                                                       si->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, "}" );
+                                               if ( refreshDeletes ) {
+                                                       syncrepl_del_nonpresent( op, si, syncUUIDs );
+                                                       ber_bvarray_free_x( syncUUIDs, op->o_tmpmemctx );
+                                               } else {
+                                                       for ( i = 0; syncUUIDs[i].bv_val; i++ ) {
+                                                               struct berval *syncuuid_bv;
+                                                               syncuuid_bv = ber_dupbv( NULL, &syncUUIDs[i] );
+                                                               slap_sl_free( syncUUIDs[i].bv_val,op->o_tmpmemctx );
+                                                               avl_insert( &si->si_presentlist,
+                                                                               (caddr_t) syncuuid_bv,
+                                                                               syncuuid_cmp, avl_dup_error );
+                                                       }
+                                                       slap_sl_free( syncUUIDs, op->o_tmpmemctx );
+                                               }
+                                               break;
+                                       default:
 #ifdef NEW_LOGGING
-                                               LDAP_LOG( OPERATION, ERR,
-                                                       "do_syncrepl : unknown sync info\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 : unknown sync info\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;
                                        }
 
-                                       if ( ber_peek_tag( res_ber, &len )
-                                                               == LDAP_SYNC_TAG_COOKIE ) {
-                                               ber_scanf( res_ber, "o}", &syncCookie );
-                                               if ( syncCookie.bv_len ) {
-                                                       ber_bvfree( si->syncCookie );
-                                                       si->syncCookie = ber_dupbv( NULL, &syncCookie );
-                                               }
+                                       if ( syncCookie_req.ctxcsn == NULL ) {
+                                               match = -1;
+                                       } else if ( syncCookie.ctxcsn == NULL ) {
+                                               match = 1;
                                        } else {
-                                               if ( syncstate == LDAP_SYNC_NEW_COOKIE ) {
-#ifdef NEW_LOGGING
-                                                       LDAP_LOG( OPERATION, ERR,
-                                                               "do_syncrepl : cookie required\n", 0, 0, 0 );
-#else
-                                                       Debug( LDAP_DEBUG_ANY,
-                                                               "do_syncrepl : cookie required\n", 0, 0, 0 );
-#endif
-                                               }
+                                               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.ctxcsn && syncCookie.ctxcsn[0].bv_val
+                                                && match < 0 ) {
+                                               syncrepl_updateCookie( si, op, psub, &syncCookie);
                                        }
 
+                                       if ( si->si_refreshPresent == 1 ) {
+                                               if ( match < 0 ) {
+                                                       syncrepl_del_nonpresent( op, si, NULL );
+                                               }
+                                       } 
+
                                        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 : "
-                                               "unknown intermediate "
-                                               "response\n", 0, 0, 0 );
+                                       Debug( LDAP_DEBUG_ANY, "do_syncrep2 : "
+                                               "unknown intermediate response (%d)\n",
+                                               rc, 0, 0 );
 #endif
                                        ldap_memfree( retoid );
                                        ber_bvfree( retdata );
@@ -616,91 +791,226 @@ 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.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 ) {
+               const char *errstr;
+
+               ldap_get_option( si->si_ld, LDAP_OPT_ERROR_NUMBER, &rc );
+               errstr = ldap_err2string( rc );
+               
 #ifdef NEW_LOGGING
                LDAP_LOG( OPERATION, ERR,
-                       "do_syncrepl : unknown result\n", 0, 0, 0 );
+                       "do_syncrep2 : %s\n", errstr, 0, 0 );
 #else
                Debug( LDAP_DEBUG_ANY,
-                       "do_syncrepl : unknown result\n", 0, 0, 0 );
+                       "do_syncrep2 : %s\n", errstr, 0, 0 );
 #endif
        }
 
 done:
-       if ( syncCookie.bv_val )
-               ch_free( syncCookie.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 ( res ) ldap_msgfree( res );
 
-       ldap_pvt_thread_mutex_lock( &syncrepl_rq.rq_mutex );
-       ldap_pvt_runqueue_stoptask( &syncrepl_rq, rtask );
-       if ( si->type == LDAP_SYNC_REFRESH_ONLY ) {
-               ldap_pvt_runqueue_resched( &syncrepl_rq, rtask );
-       } else {
-               ldap_pvt_runqueue_remove( &syncrepl_rq, rtask );
+       if ( rc && si->si_ld ) {
+               ldap_unbind( si->si_ld );
+               si->si_ld = NULL;
        }
-       ldap_pvt_thread_mutex_unlock( &syncrepl_rq.rq_mutex );
 
-       return NULL;
+       return rc;
 }
 
-static Entry*
-syncrepl_message_to_entry(
-       LDAP            *ld,
-       Operation       *op,
-       LDAPMessage     *msg,
-       Modifications   **modlist,
-       int             *syncstate,
-       struct berval   *syncUUID,
-       struct berval   *syncCookie
-)
+void *
+do_syncrepl(
+       void    *ctx,
+       void    *arg )
 {
-       Entry           *e;
-       BerElement      *ber = NULL;
-       BerElement      *tmpber;
-       struct berval   bv = {0, NULL};
-       Modifications   tmp;
-       Modifications   *mod;
-       Modifications   **modtail = modlist;
-       Backend         *be = op->o_bd;
-
-       const char      *text;
-       char txtbuf[SLAP_TEXT_BUFLEN];
-       size_t textlen = sizeof txtbuf;
+       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;
+       int i, defer = 1;
+       Backend *be;
 
-       struct berval   **bvals = NULL;
-       char            *dn;
-       struct berval   bdn = {0, NULL};
-       Attribute       *attr;
-       struct berval   empty_bv = { 0, NULL };
-       int             rc;
-       char            *a;
+#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
 
-       syncinfo_t *si = ( syncinfo_t * ) be->syncinfo;
+       if ( si == NULL )
+               return NULL;
 
-       ber_len_t       len;
-       LDAPControl*    rctrlp;
-       LDAPControl**   rctrls = NULL;
-       BerElement*     ctrl_ber;
+       ldap_pvt_thread_mutex_lock( &si->si_mutex );
+
+       switch( abs( si->si_type )) {
+       case LDAP_SYNC_REFRESH_ONLY:
+       case LDAP_SYNC_REFRESH_AND_PERSIST:
+               break;
+       default:
+               ldap_pvt_thread_mutex_unlock( &si->si_mutex );
+               return NULL;
+       }
+
+       if ( slapd_shutdown ) {
+               if ( 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;
+               }
+               ldap_pvt_thread_mutex_unlock( &si->si_mutex );
+               return NULL;
+       }
+
+       connection_fake_init( &conn, &op, ctx );
+
+       /* use global malloc for now */
+       op.o_tmpmemctx = NULL;
+       op.o_tmpmfuncs = &ch_mfuncs;
+
+       op.o_dn = si->si_updatedn;
+       op.o_ndn = si->si_updatedn;
+       op.o_managedsait = 1;
+       op.o_bd = be = si->si_be;
+
+       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;
+               si->si_refreshDelete = 0;
+               si->si_refreshPresent = 0;
+               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, 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 );
+
+       if ( ldap_pvt_runqueue_isrunning( &syncrepl_rq, rtask )) {
+               ldap_pvt_runqueue_stoptask( &syncrepl_rq, rtask );
+       }
+
+       if ( dostop ) {
+               connection_client_stop( s );
+       }
+
+       if ( rc == LDAP_SUCCESS ) {
+               if ( si->si_type == LDAP_SYNC_REFRESH_ONLY ) {
+                       defer = 0;
+               }
+               rtask->interval.tv_sec = si->si_interval;
+               ldap_pvt_runqueue_resched( &syncrepl_rq, rtask, defer );
+               if ( si->si_retrynum ) {
+                       for ( i = 0; si->si_retrynum_init[i] != -2; i++ ) {
+                               si->si_retrynum[i] = si->si_retrynum_init[i];
+                       }
+                       si->si_retrynum[i] = -2;
+               }
+       } else {
+               for ( i = 0; si->si_retrynum && si->si_retrynum[i] <= 0; i++ ) {
+                       if ( si->si_retrynum[i] == -1  || si->si_retrynum[i] == -2 )
+                               break;
+               }
+
+               if ( !si->si_retrynum || si->si_retrynum[i] == -2 ) {
+                       ldap_pvt_runqueue_remove( &syncrepl_rq, rtask );
+                       LDAP_STAILQ_REMOVE( &be->be_syncinfo, si, syncinfo_s, si_next );
+                       syncinfo_free( si );
+               } else if ( si->si_retrynum[i] >= -1 ) {
+                       if ( si->si_retrynum[i] > 0 )
+                               si->si_retrynum[i]--;
+                       rtask->interval.tv_sec = si->si_retryinterval[i];
+                       ldap_pvt_runqueue_resched( &syncrepl_rq, rtask, 0 );
+                       slap_wake_listener();
+               }
+       }
+       
+       ldap_pvt_thread_mutex_unlock( &syncrepl_rq.rq_mutex );
+       ldap_pvt_thread_mutex_unlock( &si->si_mutex );
+
+       return NULL;
+}
+
+int
+syncrepl_message_to_entry(
+       syncinfo_t      *si,
+       Operation       *op,
+       LDAPMessage     *msg,
+       Modifications   **modlist,
+       Entry                   **entry,
+       int             syncstate
+)
+{
+       Entry           *e = NULL;
+       BerElement      *ber = NULL;
+       Modifications   tmp;
+       Modifications   *mod;
+       Modifications   **modtail = modlist;
 
-       ber_tag_t       tag;
+       const char      *text;
+       char txtbuf[SLAP_TEXT_BUFLEN];
+       size_t textlen = sizeof txtbuf;
+
+       struct berval   bdn = {0, NULL}, dn, ndn;
+       int             rc;
 
        *modlist = NULL;
 
@@ -712,12 +1022,12 @@ syncrepl_message_to_entry(
                Debug( LDAP_DEBUG_ANY,
                        "Message type should be entry (%d)", ldap_msgtype( msg ), 0, 0 );
 #endif
-               return NULL;
+               return -1;
        }
 
        op->o_tag = LDAP_REQ_ADD;
 
-       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
@@ -727,19 +1037,36 @@ syncrepl_message_to_entry(
                Debug( LDAP_DEBUG_ANY,
                        "syncrepl_message_to_entry : dn get failed (%d)", rc, 0, 0 );
 #endif
-               return NULL;
+               return rc;
        }
 
-       e = ( Entry * ) ch_calloc( 1, sizeof( Entry ));
-       dnPrettyNormal( NULL, &bdn, &e->e_name, &e->e_nname, op->o_tmpmemctx );
+       dnPrettyNormal( NULL, &bdn, &dn, &ndn, op->o_tmpmemctx );
+       ber_dupbv( &op->o_req_dn, &dn );
+       ber_dupbv( &op->o_req_ndn, &ndn );
+       sl_free( ndn.bv_val, op->o_tmpmemctx );
+       sl_free( dn.bv_val, op->o_tmpmemctx );
 
-       e->e_attrs = NULL;
+       if ( syncstate == LDAP_SYNC_PRESENT || syncstate == LDAP_SYNC_DELETE ) {
+               if ( entry )
+                       *entry = NULL;
+               return LDAP_SUCCESS;
+       }
 
-       while ( ber_remaining( ber ) ) {
-               tag = ber_scanf( ber, "{mW}", &tmp.sml_type, &tmp.sml_values );
+       if ( entry == NULL ) {
+               return -1;
+       }
+
+       e = ( Entry * ) ch_calloc( 1, sizeof( Entry ) );
+       *entry = e;
+       e->e_name = op->o_req_dn;
+       e->e_nname = op->o_req_ndn;
 
-               if ( tag == LBER_ERROR ) break;
-               if ( tmp.sml_type.bv_val == NULL ) break;
+       while ( ber_remaining( ber ) ) {
+               if ( (ber_scanf( ber, "{mW}", &tmp.sml_type, &tmp.sml_values ) ==
+                       LBER_ERROR ) || ( tmp.sml_type.bv_val == NULL ))
+               {
+                       break;
+               }
 
                mod  = (Modifications *) ch_malloc( sizeof( Modifications ));
 
@@ -747,71 +1074,13 @@ syncrepl_message_to_entry(
                mod->sml_next = NULL;
                mod->sml_desc = NULL;
                mod->sml_type = tmp.sml_type;
-               mod->sml_bvalues = tmp.sml_bvalues;
-               mod->sml_nvalues = tmp.sml_bvalues;
+               mod->sml_values = tmp.sml_values;
+               mod->sml_nvalues = NULL;
 
                *modtail = mod;
                modtail = &mod->sml_next;
        }
 
-       if ( ber_scanf( ber, "}") == LBER_ERROR ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, ERR,
-                               "syncrepl_message_to_entry: ber_scanf failed\n", 0, 0, 0 );
-#else
-               Debug( LDAP_DEBUG_ANY, "syncrepl_message_to_entry: ber_scanf failed\n",
-                               0, 0, 0 );
-#endif
-               return NULL;
-       }
-
-       ber_free( ber, 0 );
-       tmpber = ldap_get_message_ber( msg );
-       ber = ber_dup( tmpber );
-
-       ber_scanf( ber, "{xx" );
-
-       rc = ldap_int_get_controls( ber, &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 ) {
-               rctrlp = *rctrls;
-               ctrl_ber = ber_alloc_t( LBER_USE_DER );
-               ber_set_option( ctrl_ber, LBER_OPT_BER_MEMCTX, op->o_tmpmemctx );
-               ber_write( ctrl_ber, rctrlp->ldctl_value.bv_val, rctrlp->ldctl_value.bv_len, 0 );
-               ber_reset( ctrl_ber, 1 );
-               ber_scanf( ctrl_ber, "{eo", syncstate, syncUUID );
-               if ( ber_peek_tag( ctrl_ber, &len ) == LDAP_SYNC_TAG_COOKIE ) {
-                       ber_scanf( ctrl_ber, "o}", syncCookie );
-               }
-               ber_free( ctrl_ber, 1 );
-       } 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
-       }
-
-       if ( *syncstate == LDAP_SYNC_PRESENT ) {
-               e = NULL;
-               goto done;
-       } else if ( *syncstate == LDAP_SYNC_DELETE ) {
-               goto done;
-       }
-
        if ( *modlist == NULL ) {
 #ifdef NEW_LOGGING
                LDAP_LOG( OPERATION, ERR,
@@ -820,9 +1089,11 @@ syncrepl_message_to_entry(
                Debug( LDAP_DEBUG_ANY, "syncrepl_message_to_entry: no attributes\n",
                                0, 0, 0 );
 #endif
+               rc = -1;
+               goto done;
        }
 
-       rc = slap_mods_check_syncrepl( op, modlist, &text, txtbuf, textlen, NULL );
+       rc = slap_mods_check( *modlist, 1, &text, txtbuf, textlen, NULL );
 
        if ( rc != LDAP_SUCCESS ) {
 #ifdef NEW_LOGGING
@@ -832,24 +1103,35 @@ syncrepl_message_to_entry(
                Debug( LDAP_DEBUG_ANY, "syncrepl_message_to_entry: mods check (%s)\n",
                                text, 0, 0 );
 #endif
-               return NULL;
+               goto done;
        }
-       
-       rc = slap_mods_opattrs_syncrepl( op, *modlist, modtail,
-                                        &text,txtbuf, textlen );
-       
-       if( rc != LDAP_SUCCESS ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, ERR,
-                               "syncrepl_message_to_entry: mods opattrs (%s)\n", text, 0, 0 );
-#else
-               Debug( LDAP_DEBUG_ANY, "syncrepl_message_to_entry: mods opattrs (%s)\n",
-                               text, 0, 0 );
-#endif
-               return NULL;
+
+       /* Strip out dynamically generated attrs */
+       for ( modtail = modlist; *modtail ; ) {
+               mod = *modtail;
+               if ( mod->sml_desc->ad_type->sat_flags & SLAP_AT_DYNAMIC ) {
+                       *modtail = mod->sml_next;
+                       slap_mod_free( &mod->sml_mod, 0 );
+                       ch_free( mod );
+               } else {
+                       modtail = &mod->sml_next;
+               }
        }
 
-       rc = slap_mods2entry_syncrepl( *modlist, &e, 1, &text, txtbuf, textlen );
+       /* Strip out attrs in exattrs list */
+       for ( modtail = modlist; *modtail ; ) {
+               mod = *modtail;
+               if ( ldap_charray_inlist( si->si_exattrs,
+                                       mod->sml_desc->ad_type->sat_cname.bv_val )) {
+                       *modtail = mod->sml_next;
+                       slap_mod_free( &mod->sml_mod, 0 );
+                       ch_free( mod );
+               } else {
+                       modtail = &mod->sml_next;
+               }
+       }
+       
+       rc = slap_mods2entry( *modlist, &e, 1, 1, &text, txtbuf, textlen);
        if( rc != LDAP_SUCCESS ) {
 #ifdef NEW_LOGGING
                LDAP_LOG( OPERATION, ERR,
@@ -861,485 +1143,789 @@ syncrepl_message_to_entry(
        }
 
 done:
-
        ber_free ( ber, 0 );
+       if ( rc != LDAP_SUCCESS ) {
+               if ( e ) {
+                       entry_free( e );
+                       *entry = e = NULL;
+               }
+       }
 
-       return e;
+       return rc;
 }
 
-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 struct berval generic_filterstr = BER_BVC("(objectclass=*)");
 
-static int
+/* During a refresh, we may get an LDAP_SYNC_ADD for an already existing
+ * entry if a previous refresh was interrupted before sending us a new
+ * context state. We try to compare the new entry to the existing entry
+ * and ignore the new entry if they are the same.
+ *
+ * Also, we may get an update where the entryDN has changed, due to
+ * a ModDn on the provider. We detect this as well, so we can issue
+ * the corresponding operation locally.
+ *
+ * In the case of a modify, we get a list of all the attributes
+ * in the original entry. Rather than deleting the entry and re-adding it,
+ * we issue a Modify request that deletes all the attributes and adds all
+ * the new ones. This avoids the issue of trying to delete/add a non-leaf
+ * entry.
+ *
+ * We don't try to otherwise distinguish ModDN from Modify; in the case of
+ * a ModDN we will issue both operations on the local database.
+ */
+typedef struct dninfo {
+       Entry *new_entry;
+       struct berval dn;
+       struct berval ndn;
+       int renamed;    /* Was an existing entry renamed? */
+       int wasChanged; /* are the attributes changed? */
+       int attrs;      /* how many attribute types are in the ads list */
+       AttributeDescription **ads;
+} dninfo;
+
+int
 syncrepl_entry(
-       LDAP *ld,
+       syncinfo_t* si,
        Operation *op,
-       Entry* e,
-       Modifications* modlist,
+       Entry* entry,
+       Modifications** modlist,
        int syncstate,
        struct berval* syncUUID,
-       struct berval* syncCookie,
-       int refresh
+       struct sync_cookie* syncCookie_req,
+       struct berval* syncCSN
 )
 {
        Backend *be = op->o_bd;
-       syncinfo_t *si = ( syncinfo_t * ) be->syncinfo;
-       slap_callback   cb;
-       struct berval   csn_bv = {0, NULL};
+       slap_callback   cb = { NULL };
        struct berval   *syncuuid_bv = NULL;
-       char csnbuf[ LDAP_LUTIL_CSNSTR_BUFSIZE ];
-
-       SlapReply       rs = {REP_RESULT};
+       struct berval   syncUUID_strrep = BER_BVNULL;
+       struct berval   uuid_bv = BER_BVNULL;
+
+       SlapReply       rs_search = {REP_RESULT};
+       SlapReply       rs_delete = {REP_RESULT};
+       SlapReply       rs_add = {REP_RESULT};
+       SlapReply       rs_modify = {REP_RESULT};
+       Filter f = {0};
+       AttributeAssertion ava = {0};
        int rc = LDAP_SUCCESS;
+       int ret = LDAP_SUCCESS;
+       const char *text;
 
-       struct berval base_bv = {0, NULL};
-
-       char *filterstr;
-       Filter *filter;
-
-       Attribute *a;
+       struct berval pdn = BER_BVNULL;
+       struct berval org_req_dn = BER_BVNULL;
+       struct berval org_req_ndn = BER_BVNULL;
+       struct berval org_dn = BER_BVNULL;
+       struct berval org_ndn = BER_BVNULL;
+       int     org_managedsait;
+       dninfo dni = {0};
+       int retry = 1;
 
-       if ( refresh &&
-                       ( syncstate == LDAP_SYNC_PRESENT || syncstate == LDAP_SYNC_ADD )) {
-               syncuuid_bv = ber_dupbv( NULL, syncUUID );
-               avl_insert( &si->presentlist, (caddr_t) syncuuid_bv,
-                                               syncuuid_cmp, avl_dup_error );
+       if (( syncstate == LDAP_SYNC_PRESENT || syncstate == LDAP_SYNC_ADD ))
+       {
+               if (!si->si_refreshPresent) {
+                       syncuuid_bv = ber_dupbv( NULL, syncUUID );
+                       avl_insert( &si->si_presentlist, (caddr_t) syncuuid_bv,
+                               syncuuid_cmp, avl_dup_error );
+               }
        }
 
        if ( syncstate == LDAP_SYNC_PRESENT ) {
-               if ( e )
-                       return 1;
-               else
+               return 0;
+       } else if ( syncstate != LDAP_SYNC_DELETE ) {
+               if ( entry == NULL ) {
                        return 0;
+               }
        }
 
-       filterstr = (char *) sl_malloc( strlen("entryUUID=") + syncUUID->bv_len + 1,
-                                                                       op->o_tmpmemctx ); 
-       strcpy( filterstr, "entryUUID=" );
-       strcat( filterstr, syncUUID->bv_val );
+       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 ); 
+       AC_MEMCPY( op->ors_filterstr.bv_val, "entryUUID=", sizeof("entryUUID=")-1 );
+       AC_MEMCPY( &op->ors_filterstr.bv_val[sizeof("entryUUID=")-1],
+               syncUUID->bv_val, syncUUID->bv_len );
+       op->ors_filterstr.bv_val[op->ors_filterstr.bv_len] = '\0';
 
-       si->e = e;
-       si->syncUUID = syncUUID;
-       si->syncUUID_ndn = NULL;
-
-       filter = str2filter( filterstr );
-       ber_str2bv( filterstr, strlen(filterstr), 1, &op->ors_filterstr );
-       ch_free( filterstr );
-       op->ors_filter = filter;
+       op->o_tag = LDAP_REQ_SEARCH;
        op->ors_scope = LDAP_SCOPE_SUBTREE;
 
-       /* get syncrepl cookie of shadow replica from subentry */
-       ber_str2bv( si->base, strlen(si->base), 1, &base_bv ); 
-       dnPrettyNormal( 0, &base_bv, &op->o_req_dn, &op->o_req_ndn, op->o_tmpmemctx );
-       ch_free( base_bv.bv_val );
+       /* get the entry for this UUID */
+       op->o_req_dn = si->si_base;
+       op->o_req_ndn = si->si_base;
+
+       op->o_time = slap_get_time();
+       op->ors_tlimit = SLAP_NO_LIMIT;
+       op->ors_slimit = 1;
+       op->ors_attrs = anlist_all_attrs;
+       op->ors_attrsonly = 0;
 
        /* set callback function */
        op->o_callback = &cb;
        cb.sc_response = dn_callback;
-       cb.sc_private = si;
+       cb.sc_private = &dni;
+       dni.new_entry = entry;
 
-       be->be_search( op, &rs );
-
-       ch_free( op->o_req_dn.bv_val );
-       ch_free( op->o_req_ndn.bv_val );
-       filter_free( op->ors_filter );
-       ch_free( op->ors_filterstr.bv_val );
-
-       cb.sc_response = null_callback;
+       if ( limits_check( op, &rs_search ) == 0 ) {
+               rc = be->be_search( op, &rs_search );
+       }
 
-       rc = LDAP_SUCCESS;
+       if ( op->ors_filterstr.bv_val ) {
+               sl_free( op->ors_filterstr.bv_val, op->o_tmpmemctx );
+       }
 
-       if ( si->syncUUID_ndn ) {
-               op->o_req_dn = *si->syncUUID_ndn;
-               op->o_req_ndn = *si->syncUUID_ndn;
-               op->o_tag = LDAP_REQ_DELETE;
-               rc = be->be_delete( op, &rs );
+       org_req_dn = op->o_req_dn;
+       org_req_ndn = op->o_req_ndn;
+       org_dn = op->o_dn;
+       org_ndn = op->o_ndn;
+       org_managedsait = get_manageDSAit( op );
+       op->o_dn = op->o_bd->be_rootdn;
+       op->o_ndn = op->o_bd->be_rootndn;
+       op->o_managedsait = 1;
+
+       if ( syncstate != LDAP_SYNC_DELETE ) {
+               attr_delete( &entry->e_attrs, slap_schema.si_ad_entryUUID );
+               attr_merge_one( entry, slap_schema.si_ad_entryUUID,
+                       &syncUUID_strrep, syncUUID );
        }
 
        switch ( syncstate ) {
-       case LDAP_SYNC_ADD :
-       case LDAP_SYNC_MODIFY :
-
-               if ( rc == LDAP_SUCCESS ||
-                        rc == LDAP_REFERRAL ||
-                        rc == LDAP_NO_SUCH_OBJECT ||
-                        rc == DB_NOTFOUND ) {
+       case LDAP_SYNC_ADD:
+       case LDAP_SYNC_MODIFY:
+retry_add:;
+               if ( BER_BVISNULL( &dni.dn )) {
+                       op->o_tag = LDAP_REQ_ADD;
+                       op->ora_e = entry;
+                       op->o_req_dn = entry->e_name;
+                       op->o_req_ndn = entry->e_nname;
+
+                       rc = be->be_add( op, &rs_add );
+                       switch( rs_add.sr_err ) {
+                       case LDAP_SUCCESS:
+                               be_entry_release_w( op, entry );
+                               ret = 0;
+                               break;
 
-                       if ( !attr_find( e->e_attrs, slap_schema.si_ad_entryUUID )) {
-                               attr_merge_one( e, slap_schema.si_ad_entryUUID, syncUUID, syncUUID );
-                       }
+                       case LDAP_REFERRAL:
+                       /* we assume that LDAP_NO_SUCH_OBJECT is returned
+                        * only if the suffix entry is not present */
+                       case LDAP_NO_SUCH_OBJECT:
+                               syncrepl_add_glue( op, entry );
+                               ret = 0;
+                               break;
 
-                       op->o_tag = LDAP_REQ_ADD;
-                       op->ora_e = e;
-                       op->o_req_dn = e->e_name;
-                       op->o_req_ndn = e->e_nname;
-                       rc = be->be_add( op, &rs );
-
-                       if ( rc != LDAP_SUCCESS ) {
-                               if ( rc == LDAP_ALREADY_EXISTS ) {      
-                                       op->o_tag = LDAP_REQ_MODIFY;
-                                       op->orm_modlist = modlist;
-                                       op->o_req_dn = e->e_name;
-                                       op->o_req_ndn = e->e_nname;
-                                       rc = be->be_modify( op, &rs );
-                               } else if ( rc == LDAP_REFERRAL ||
-                                                       rc == LDAP_NO_SUCH_OBJECT ||
-                                                       rc == DB_NOTFOUND ) {
-                                       syncrepl_add_glue(ld, op, e,
-                                               modlist, syncstate,
-                                               syncUUID, syncCookie);
-                               } else {
-#ifdef NEW_LOGGING
-                                       LDAP_LOG( OPERATION, ERR,
-                                               "be_modify failed (%d)\n",
-                                               rc, 0, 0 );
-#else
-                                       Debug( LDAP_DEBUG_ANY,
-                                               "be_modify failed (%d)\n",
-                                               rc, 0, 0 );
-#endif
+                       /* if an entry was added via syncrepl_add_glue(),
+                        * it likely has no entryUUID, so the previous
+                        * be_search() doesn't find it.  In this case,
+                        * give syncrepl a chance to modify it. Also
+                        * allow for entries that were recreated with the
+                        * same DN but a different entryUUID.
+                        */
+                       case LDAP_ALREADY_EXISTS:
+                               if ( retry ) {
+                                       Operation   op2 = *op;
+                                       SlapReply   rs2 = { 0 };
+                                       slap_callback   cb2 = { 0 };
+                                       op2.o_tag = LDAP_REQ_SEARCH;
+                                       op2.o_req_dn = entry->e_name;
+                                       op2.o_req_ndn = entry->e_nname;
+                                       op2.ors_scope = LDAP_SCOPE_BASE;
+                                       op2.ors_attrs = anlist_all_attrs;
+                                       op2.ors_attrsonly = 0;
+                                       op2.ors_limit = NULL;
+                                       op2.ors_slimit = 1;
+                                       op2.ors_tlimit = SLAP_NO_LIMIT;
+                                       f.f_choice = LDAP_FILTER_PRESENT;
+                                       f.f_desc = slap_schema.si_ad_objectClass;
+                                       op2.ors_filter = &f;
+                                       op2.ors_filterstr = generic_filterstr;
+
+                                       op2.o_callback = &cb2;
+                                       cb2.sc_response = dn_callback;
+                                       cb2.sc_private = &dni;
+
+                                       be->be_search( &op2, &rs2 );
+                                       retry = 0;
+                                       goto retry_add;
                                }
+                               /* FALLTHRU */
+
+                       default:
+                               ret = 1;
+                               break;
+                       }
+                       goto done;
+               }
+               /* FALLTHRU */
+               op->o_req_dn = dni.dn;
+               op->o_req_ndn = dni.ndn;
+               if ( dni.renamed ) {
+                       struct berval noldp, newp, nnewp;
+                       op->o_tag = LDAP_REQ_MODRDN;
+                       dnRdn( &entry->e_name, &op->orr_newrdn );
+                       dnRdn( &entry->e_nname, &op->orr_nnewrdn );
+                       dnParent( &dni.ndn, &noldp );
+                       dnParent( &entry->e_nname, &nnewp );
+                       if ( !dn_match( &noldp, &newp )) {
+                               dnParent( &entry->e_name, &newp );
+                               op->orr_newSup = &newp;
+                               op->orr_nnewSup = &nnewp;
+                       }
+                       op->orr_deleteoldrdn = 0;
+                       rc = be->be_modrdn( op, &rs_modify );
+                       if ( rs_modify.sr_err == LDAP_SUCCESS ) {
+                               op->o_req_dn = entry->e_name;
+                               op->o_req_ndn = entry->e_nname;
                        } else {
-                               return 0;
+                               ret = 1;
+                               goto done;
                        }
-               } else {
-#ifdef NEW_LOGGING
-                       LDAP_LOG( OPERATION, ERR,
-                               "be_modify/be_delete failed (%d)\n", rc, 0, 0 );
-#else
-                       Debug( LDAP_DEBUG_ANY,
-                               "be_modify/be_delete failed (%d)\n", rc, 0, 0 );
-#endif
                }
+               if ( dni.wasChanged ) {
+                       Modifications *mod, *modhead = NULL;
+                       Modifications *modtail = NULL;
+                       int i;
+                       op->o_tag = LDAP_REQ_MODIFY;
+                       assert( *modlist );
+                       /* Delete all the old attrs */
+                       for ( i=0; i<dni.attrs; i++) {
+                               mod = ch_malloc( sizeof(Modifications));
+                               mod->sml_op = LDAP_MOD_DELETE;
+                               mod->sml_desc = dni.ads[i];
+                               mod->sml_type =mod->sml_desc->ad_cname;
+                               mod->sml_values = NULL;
+                               mod->sml_nvalues = NULL;
+                               if ( !modhead ) modhead = mod;
+                               if ( modtail ) {
+                                       modtail->sml_next = mod;
+                               }
+                               modtail = mod;
+                       }
 
-               si->e = NULL;
-               return 1;
-
+                       /* Append passed in list to ours */
+                       if ( modtail ) {
+                               modtail->sml_next = *modlist;
+                               *modlist = modhead;
+                       } else {
+                               mod = *modlist;
+                       }
+                       /* Find end of this list */
+                       for ( ; mod != NULL; mod = mod->sml_next ) {
+                               modtail = mod;
+                       }
+                       mod = (Modifications *)ch_calloc(1, sizeof(Modifications));
+                       mod->sml_op = LDAP_MOD_REPLACE;
+                       mod->sml_desc = slap_schema.si_ad_entryUUID;
+                       mod->sml_type = mod->sml_desc->ad_cname;
+                       ber_dupbv( &uuid_bv, &syncUUID_strrep );
+                       ber_bvarray_add( &mod->sml_values, &uuid_bv );
+                       ber_dupbv( &uuid_bv, syncUUID );
+                       ber_bvarray_add( &mod->sml_nvalues, &uuid_bv );
+                       modtail->sml_next = mod;
+                       op->o_tag = LDAP_REQ_MODIFY;
+                       op->orm_modlist = *modlist;
+                       rc = be->be_modify( op, &rs_modify );
+                       if ( rs_modify.sr_err != LDAP_SUCCESS ) {
+                               Debug( LDAP_DEBUG_ANY,
+                                       "syncrepl_entry : be_modify failed (%d)\n",
+                                       rs_modify.sr_err, 0, 0 );
+                       }
+               }
+               ret = 1;
+               goto done;
        case LDAP_SYNC_DELETE :
-               /* Already deleted */
-               return 1;
+               if ( !BER_BVISNULL( &dni.dn )) {
+                       op->o_req_dn = dni.dn;
+                       op->o_req_ndn = dni.ndn;
+                       op->o_tag = LDAP_REQ_DELETE;
+                       rc = be->be_delete( op, &rs_delete );
+                       while ( rs_delete.sr_err == LDAP_SUCCESS
+                               && op->o_delete_glue_parent ) {
+                               op->o_delete_glue_parent = 0;
+                               if ( !be_issuffix( op->o_bd, &op->o_req_ndn )) {
+                                       slap_callback cb = { NULL };
+                                       cb.sc_response = slap_null_cb;
+                                       dnParent( &op->o_req_ndn, &pdn );
+                                       op->o_req_dn = pdn;
+                                       op->o_req_ndn = pdn;
+                                       op->o_callback = &cb;
+                                       op->o_bd->be_delete( op, &rs_delete );
+                               } else {
+                                       break;
+                               }
+                       }
+               }
+               ret = 0;
+               goto done;
 
        default :
 #ifdef NEW_LOGGING
                LDAP_LOG( OPERATION, ERR,
-                       "unknown syncstate\n", 0, 0, 0 );
+                       "syncrepl_entry : unknown syncstate\n", 0, 0, 0 );
 #else
                Debug( LDAP_DEBUG_ANY,
-                       "unknown syncstate\n", 0, 0, 0 );
+                       "syncrepl_entry : unknown syncstate\n", 0, 0, 0 );
 #endif
-               return 1;
+               ret = 1;
+               goto done;
+       }
+
+done :
+
+       if ( !BER_BVISNULL( &syncUUID_strrep ) ) {
+               slap_sl_free( syncUUID_strrep.bv_val, op->o_tmpmemctx );
+               BER_BVZERO( &syncUUID_strrep );
        }
+       if ( dni.ads ) {
+               op->o_tmpfree( dni.ads, op->o_tmpmemctx );
+       }
+       if ( !BER_BVISNULL( &dni.ndn ) ) {
+               op->o_tmpfree( dni.ndn.bv_val, op->o_tmpmemctx );
+       }
+       if ( !BER_BVISNULL( &dni.dn ) ) {
+               op->o_tmpfree( dni.dn.bv_val, op->o_tmpmemctx );
+       }
+       return ret;
 }
 
-static int
+static struct berval gcbva[] = {
+       BER_BVC("top"),
+       BER_BVC("glue"),
+       BER_BVNULL
+};
+
+#define NP_DELETE_ONE  2
+
+static void
 syncrepl_del_nonpresent(
-       LDAP *ld,
-       Operation *op
+       Operation *op,
+       syncinfo_t *si,
+       BerVarray uuids
 )
 {
        Backend* be = op->o_bd;
-       syncinfo_t *si = ( syncinfo_t * ) be->syncinfo;
-       slap_callback   cb;
-       struct berval   base_bv = {0, NULL};
-       Filter *filter;
-       SlapReply       rs = {REP_RESULT};
-       struct berval   filterstr_bv = {0, NULL};
+       slap_callback   cb = { NULL };
+       SlapReply       rs_search = {REP_RESULT};
+       SlapReply       rs_delete = {REP_RESULT};
+       SlapReply       rs_modify = {REP_RESULT};
        struct nonpresent_entry *np_list, *np_prev;
+       int rc;
+       Modifications *ml;
+       Modifications *mlnext;
+       Modifications *mod;
+       Modifications *modlist = NULL;
+       Modifications **modtail;
+       AttributeName   an[2];
 
-       ber_str2bv( si->base, strlen(si->base), 1, &base_bv ); 
-       dnPrettyNormal(0, &base_bv, &op->o_req_dn, &op->o_req_ndn, op->o_tmpmemctx );
-       ch_free( base_bv.bv_val );
+       struct berval pdn = BER_BVNULL;
+       struct berval org_req_dn = BER_BVNULL;
+       struct berval org_req_ndn = BER_BVNULL;
+       struct berval org_dn = BER_BVNULL;
+       struct berval org_ndn = BER_BVNULL;
+       int     org_managedsait;
 
-       filter = str2filter( si->filterstr );
+       op->o_req_dn = si->si_base;
+       op->o_req_ndn = si->si_base;
 
        cb.sc_response = nonpresent_callback;
        cb.sc_private = si;
 
        op->o_callback = &cb;
        op->o_tag = LDAP_REQ_SEARCH;
-       op->ors_scope = si->scope;
+       op->ors_scope = si->si_scope;
        op->ors_deref = LDAP_DEREF_NEVER;
-       op->ors_slimit = -1;
-       op->ors_tlimit = -1;
-       op->ors_attrsonly = 0;
-       op->ors_attrs = NULL;
-       op->ors_filter = filter;
-       ber_str2bv( si->filterstr, strlen( si->filterstr ), 1, &op->ors_filterstr );
+       op->o_time = slap_get_time();
+       op->ors_tlimit = SLAP_NO_LIMIT;
+
+       if ( uuids ) {
+               Filter uf;
+               AttributeAssertion eq;
+               int i;
+               op->ors_attrsonly = 1;
+               op->ors_attrs = anlist_no_attrs;
+               op->ors_limit = NULL;
+               op->ors_filter = &uf;
+               op->o_managedsait = 1;
+               uf.f_ava = &eq;
+               uf.f_av_desc = slap_schema.si_ad_entryUUID;
+               uf.f_next = NULL;
+               uf.f_choice = LDAP_FILTER_EQUALITY;
+               si->si_refreshDelete |= NP_DELETE_ONE;
+               for (i=0; uuids[i].bv_val; i++) {
+                       op->ors_slimit = 1;
+                       uf.f_av_value = uuids[i];
+                       rc = be->be_search( op, &rs_search );
+               }
+               si->si_refreshDelete ^= NP_DELETE_ONE;
+       } else {
+               memset( &an[0], 0, 2 * sizeof( AttributeName ) );
+               an[0].an_name = slap_schema.si_ad_entryUUID->ad_cname;
+               an[0].an_desc = slap_schema.si_ad_entryUUID;
+               op->ors_attrs = an;
+               op->ors_slimit = SLAP_NO_LIMIT;
+               op->ors_attrsonly = 0;
+               op->ors_filter = str2filter_x( op, si->si_filterstr.bv_val );
+               op->ors_filterstr = si->si_filterstr;
+               op->o_nocaching = 1;
+               op->o_managedsait = 0;
+
+               if ( limits_check( op, &rs_search ) == 0 ) {
+                       rc = be->be_search( op, &rs_search );
+               }
+               if ( op->ors_filter ) filter_free_x( op, op->ors_filter );
+       }
 
-       be->be_search( op, &rs );
+       op->o_managedsait = 1;
+       op->o_nocaching = 0;
 
-       if ( !LDAP_LIST_EMPTY( &si->nonpresentlist ) ) {
-               np_list = LDAP_LIST_FIRST( &si->nonpresentlist );
+       if ( !LDAP_LIST_EMPTY( &si->si_nonpresentlist ) ) {
+               np_list = LDAP_LIST_FIRST( &si->si_nonpresentlist );
                while ( np_list != NULL ) {
-                       LDAP_LIST_REMOVE( np_list, np_link );
+                       LDAP_LIST_REMOVE( np_list, npe_link );
                        np_prev = np_list;
-                       np_list = LDAP_LIST_NEXT( np_list, np_link );
+                       np_list = LDAP_LIST_NEXT( np_list, npe_link );
                        op->o_tag = LDAP_REQ_DELETE;
                        op->o_callback = &cb;
                        cb.sc_response = null_callback;
                        cb.sc_private = si;
-                       op->o_req_dn = *np_prev->dn;
-                       op->o_req_ndn = *np_prev->ndn;
-                       op->o_bd->be_delete( op, &rs );
-                       ber_bvfree( np_prev->dn );
-                       ber_bvfree( np_prev->ndn );
+                       op->o_req_dn = *np_prev->npe_name;
+                       op->o_req_ndn = *np_prev->npe_nname;
+                       rc = op->o_bd->be_delete( op, &rs_delete );
+
+                       if ( rs_delete.sr_err == LDAP_NOT_ALLOWED_ON_NONLEAF ) {
+                               modtail = &modlist;
+                               mod = (Modifications *) ch_calloc( 1, sizeof( Modifications ));
+                               mod->sml_op = LDAP_MOD_REPLACE;
+                               mod->sml_desc = slap_schema.si_ad_objectClass;
+                               mod->sml_type = mod->sml_desc->ad_cname;
+                               mod->sml_values = &gcbva[0];
+                               *modtail = mod;
+                               modtail = &mod->sml_next;
+
+                               mod = (Modifications *) ch_calloc( 1, sizeof( Modifications ));
+                               mod->sml_op = LDAP_MOD_REPLACE;
+                               mod->sml_desc = slap_schema.si_ad_structuralObjectClass;
+                               mod->sml_type = mod->sml_desc->ad_cname;
+                               mod->sml_values = &gcbva[1];
+                               *modtail = mod;
+                               modtail = &mod->sml_next;
+
+                               op->o_tag = LDAP_REQ_MODIFY;
+                               op->orm_modlist = modlist;
+
+                               rc = be->be_modify( op, &rs_modify );
+
+                               for ( ml = modlist; ml != NULL; ml = mlnext ) {
+                                       mlnext = ml->sml_next;
+                                       free( ml );
+                               }
+                       }
+
+                       org_req_dn = op->o_req_dn;
+                       org_req_ndn = op->o_req_ndn;
+                       org_dn = op->o_dn;
+                       org_ndn = op->o_ndn;
+                       org_managedsait = get_manageDSAit( op );
+                       op->o_dn = op->o_bd->be_rootdn;
+                       op->o_ndn = op->o_bd->be_rootndn;
+                       op->o_managedsait = 1;
+
+                       while ( rs_delete.sr_err == LDAP_SUCCESS &&
+                                       op->o_delete_glue_parent ) {
+                               op->o_delete_glue_parent = 0;
+                               if ( !be_issuffix( op->o_bd, &op->o_req_ndn )) {
+                                       slap_callback cb = { NULL };
+                                       cb.sc_response = slap_null_cb;
+                                       dnParent( &op->o_req_ndn, &pdn );
+                                       op->o_req_dn = pdn;
+                                       op->o_req_ndn = pdn;
+                                       op->o_callback = &cb;
+                                       /* give it a root privil ? */
+                                       op->o_bd->be_delete( op, &rs_delete );
+                               } else {
+                                       break;
+                           }
+                       }
+
+                       op->o_managedsait = org_managedsait;
+                       op->o_dn = org_dn;
+                       op->o_ndn = org_ndn;
+                       op->o_req_dn = org_req_dn;
+                       op->o_req_ndn = org_req_ndn;
+                       op->o_delete_glue_parent = 0;
+
+                       ber_bvfree( np_prev->npe_name );
+                       ber_bvfree( np_prev->npe_nname );
                        op->o_req_dn.bv_val = NULL;
                        op->o_req_ndn.bv_val = NULL;
                        ch_free( np_prev );
                }
        }
 
-       if ( op->o_req_dn.bv_val )
-               ch_free( op->o_req_dn.bv_val );
-       if ( op->o_req_ndn.bv_val )
-               ch_free( op->o_req_ndn.bv_val );
-       filter_free( op->ors_filter );
-       ch_free( op->ors_filterstr.bv_val );
+       return;
 }
 
 
-static void
+void
 syncrepl_add_glue(
-       LDAP *ld,
        Operation* op,
-       Entry *e,
-       Modifications* modlist,
-       int syncstate,
-       struct berval* syncUUID,
-       struct berval* syncCookie
+       Entry *e
 )
 {
        Backend *be = op->o_bd;
-       syncinfo_t *si = op->o_callback->sc_private;
-       struct berval   uuid_bv = {0, NULL};
-       slap_callback cb;
+       slap_callback cb = { NULL };
        Attribute       *a;
        int     rc;
-       char    uuidbuf[ LDAP_LUTIL_UUIDSTR_BUFSIZE ];
-       int levels = 0;
-       int i, j, k;
+       int suffrdns;
+       int i;
        struct berval dn = {0, NULL};
-       struct berval pdn = {0, NULL};
        struct berval ndn = {0, NULL};
-       struct berval rdn = {0, NULL};
        Entry   *glue;
-       SlapReply       rs = {REP_RESULT};
-       Connection *conn = op->o_conn;
+       SlapReply       rs_add = {REP_RESULT};
+       char    *ptr, *comma;
 
        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;
 
-       ber_dupbv( &dn, &e->e_nname );
-       ber_dupbv( &pdn, &e->e_nname );
-
-       while ( !be_issuffix ( be, &pdn )) {
-               dnParent( &dn, &pdn );
-               ch_free( dn.bv_val );
-               ber_dupbv( &dn, &pdn );
-               levels++;
-       }
-
-       for ( i = 0; i <= levels; i++ ) {
-               glue = (Entry*) ch_calloc( 1, sizeof(Entry) );
-               ch_free( dn.bv_val );
-               ch_free( pdn.bv_val );
-               ber_dupbv( &dn, &e->e_nname );
-               ber_dupbv( &pdn, &e->e_nname );
-               j = levels - i;
-               for ( k = 0; k < j; k++ ) {
-                       dnParent( &dn, &pdn );
-                       ch_free( dn.bv_val );
-                       ber_dupbv( &dn, &pdn );
+       /* count RDNs in suffix */
+       if ( be->be_nsuffix[0].bv_len ) {
+               for (i=0, ptr=be->be_nsuffix[0].bv_val; ptr; ptr=strchr( ptr, ',' )) {
+                       ptr++;
+                       i++;
                }
+               suffrdns = i;
+       } else {
+               /* suffix is "" */
+               suffrdns = 0;
+       }
+
+       /* Start with BE suffix */
+       for ( i = 0, ptr = NULL; i < suffrdns; i++ ) {
+               comma = strrchr(dn.bv_val, ',');
+               if ( ptr ) *ptr = ',';
+               if ( comma ) *comma = '\0';
+               ptr = comma;
+       }
+       if ( ptr ) {
+               *ptr++ = ',';
+               dn.bv_len -= ptr - dn.bv_val;
+               dn.bv_val = ptr;
+       }
+       /* the normalizedDNs are always the same length, no counting
+        * required.
+        */
+       if ( ndn.bv_len > be->be_nsuffix[0].bv_len ) {
+               ndn.bv_val += ndn.bv_len - be->be_nsuffix[0].bv_len;
+               ndn.bv_len = be->be_nsuffix[0].bv_len;
+       }
 
-               dnPrettyNormal( 0, &dn, &pdn, &ndn, op->o_tmpmemctx );
-               ber_dupbv( &glue->e_name, &pdn );
+       while ( ndn.bv_val > e->e_nname.bv_val ) {
+               glue = (Entry *) ch_calloc( 1, sizeof(Entry) );
+               ber_dupbv( &glue->e_name, &dn );
                ber_dupbv( &glue->e_nname, &ndn );
-               ch_free( dn.bv_val );
-               ch_free( pdn.bv_val );
-               ch_free( ndn.bv_val );
 
                a = ch_calloc( 1, sizeof( Attribute ));
                a->a_desc = slap_schema.si_ad_objectClass;
+
                a->a_vals = ch_calloc( 3, sizeof( struct berval ));
-               ber_str2bv( "top", strlen("top"), 1, &a->a_vals[0] );
-               ber_str2bv( "glue", strlen("glue"), 1, &a->a_vals[1] );
-               a->a_vals[2].bv_len = 0;
-               a->a_vals[2].bv_val = NULL;
+               ber_dupbv( &a->a_vals[0], &gcbva[0] );
+               ber_dupbv( &a->a_vals[1], &gcbva[1] );
+               ber_dupbv( &a->a_vals[2], &gcbva[2] );
+
+               a->a_nvals = a->a_vals;
+
                a->a_next = glue->e_attrs;
                glue->e_attrs = a;
 
                a = ch_calloc( 1, sizeof( Attribute ));
                a->a_desc = slap_schema.si_ad_structuralObjectClass;
+
                a->a_vals = ch_calloc( 2, sizeof( struct berval ));
-               ber_str2bv( "glue", strlen("glue"), 1, &a->a_vals[0] );
-               a->a_vals[1].bv_len = 0;
-               a->a_vals[1].bv_val = NULL;
+               ber_dupbv( &a->a_vals[0], &gcbva[1] );
+               ber_dupbv( &a->a_vals[1], &gcbva[2] );
+
+               a->a_nvals = a->a_vals;
+
                a->a_next = glue->e_attrs;
                glue->e_attrs = a;
 
-               if ( !strcmp( e->e_nname.bv_val, glue->e_nname.bv_val )) {
-                       op->o_req_dn = e->e_name;
-                       op->o_req_ndn = e->e_nname;
-                       op->ora_e = e;
-                       rc = be->be_add ( op, &rs );
-                       if ( rc == LDAP_SUCCESS )
-                               be_entry_release_w( op, e );
-                       else 
-                               entry_free( e );
-                       entry_free( glue );
+               op->o_req_dn = glue->e_name;
+               op->o_req_ndn = glue->e_nname;
+               op->ora_e = glue;
+               rc = be->be_add ( op, &rs_add );
+               if ( rs_add.sr_err == LDAP_SUCCESS ) {
+                       be_entry_release_w( op, glue );
                } else {
-                       op->o_req_dn = glue->e_name;
-                       op->o_req_ndn = glue->e_nname;
-                       op->ora_e = glue;
-                       rc = be->be_add ( op, &rs );
-                       if ( rc == LDAP_SUCCESS ) {
-                               be_entry_release_w( op, glue );
-                       } else {
-                       /* incl. ALREADY EXIST */
-                               entry_free( glue );
-                       }
+               /* incl. ALREADY EXIST */
+                       entry_free( glue );
+               }
+
+               /* Move to next child */
+               for (ptr = dn.bv_val-2; ptr > e->e_name.bv_val && *ptr != ','; ptr--) {
+                       /* empty */
+               }
+               if ( ptr == e->e_name.bv_val ) break;
+               dn.bv_val = ++ptr;
+               dn.bv_len = e->e_name.bv_len - (ptr-e->e_name.bv_val);
+               for( ptr = ndn.bv_val-2;
+                       ptr > e->e_nname.bv_val && *ptr != ',';
+                       ptr--)
+               {
+                       /* empty */
                }
+               ndn.bv_val = ++ptr;
+               ndn.bv_len = e->e_nname.bv_len - (ptr-e->e_nname.bv_val);
+       }
+
+       op->o_req_dn = e->e_name;
+       op->o_req_ndn = e->e_nname;
+       op->ora_e = e;
+       rc = be->be_add ( op, &rs_add );
+       if ( rs_add.sr_err == LDAP_SUCCESS ) {
+               be_entry_release_w( op, e );
+       } else {
+               entry_free( e );
        }
 
        return;
 }
 
-static void
+static struct berval ocbva[] = {
+       BER_BVC("top"),
+       BER_BVC("subentry"),
+       BER_BVC("syncConsumerSubentry"),
+       BER_BVNULL
+};
+
+static struct berval cnbva[] = {
+       BER_BVNULL,
+       BER_BVNULL
+};
+
+static struct berval ssbva[] = {
+       BER_BVC("{}"),
+       BER_BVNULL
+};
+
+static struct berval scbva[] = {
+       BER_BVNULL,
+       BER_BVNULL
+};
+
+void
 syncrepl_updateCookie(
-       LDAP *ld,
+       syncinfo_t *si,
        Operation *op,
        struct berval *pdn,
-       struct berval *syncCookie
+       struct sync_cookie *syncCookie
 )
 {
        Backend *be = op->o_bd;
-       syncinfo_t *si = ( syncinfo_t * ) be->syncinfo;
        Modifications *ml;
        Modifications *mlnext;
        Modifications *mod;
-       Modifications *modlist;
+       Modifications *modlist = NULL;
        Modifications **modtail = &modlist;
 
-       struct berval* ocbva = NULL;
-       struct berval* cnbva = NULL;
-       struct berval* ssbva = NULL;
-       struct berval* scbva = NULL;
-
-       char substr[64];
-       char rdnstr[67];
        const char      *text;
        char txtbuf[SLAP_TEXT_BUFLEN];
        size_t textlen = sizeof txtbuf;
 
-       Entry* e;
+       Entry* e = NULL;
        int rc;
 
-       struct berval sub_bv = { 0, NULL };
-       struct berval psubrdn = { 0, NULL };
+       char syncrepl_cbuf[sizeof(CN_STR SYNCREPL_STR)];
+       struct berval slap_syncrepl_dn_bv = BER_BVNULL;
+       struct berval slap_syncrepl_cn_bv = BER_BVNULL;
        
-       slap_callback cb;
-       SlapReply       rs = {REP_RESULT};
-
-       ocbva = ( struct berval * ) ch_calloc( 4, sizeof( struct berval ));
-       cnbva = ( struct berval * ) ch_calloc( 2, sizeof( struct berval ));
-       ssbva = ( struct berval * ) ch_calloc( 2, sizeof( struct berval ));
-       scbva = ( struct berval * ) ch_calloc( 2, sizeof( struct berval ));
-
-       /* update in memory cookie */
-       if ( si->syncCookie != NULL ) {
-               ber_bvfree( si->syncCookie );
-       }
-       si->syncCookie = ber_dupbv( NULL, syncCookie );
-       ber_str2bv( "top", strlen("top"), 1, &ocbva[0] );
-       ber_str2bv( "subentry", strlen("subentry"), 1, &ocbva[1] );
-       ber_str2bv( "syncConsumerSubentry",
-                       strlen("syncConsumerSubentry"), 1, &ocbva[2] );
-       ocbva[3].bv_len = 0;
-       ocbva[3].bv_val = NULL;
-
-       mod = (Modifications *) ch_malloc( sizeof( Modifications ));
+       slap_callback cb = { NULL };
+       SlapReply       rs_add = {REP_RESULT};
+       SlapReply       rs_modify = {REP_RESULT};
+
+       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;
-       mod->sml_next = NULL;
-       mod->sml_desc = NULL;
-       ber_str2bv( "objectClass", strlen("objectClass"), 1, &mod->sml_type );
-       mod->sml_bvalues = ocbva;
-       mod->sml_nvalues = ocbva;
+       mod->sml_desc = slap_schema.si_ad_objectClass;
+       mod->sml_type = mod->sml_desc->ad_cname;
+       mod->sml_values = ocbva;
        *modtail = mod;
        modtail = &mod->sml_next;
 
-       sprintf( substr, "syncrepl%d", si->id );
-       sprintf( rdnstr, "cn=%s", substr );
-       ber_str2bv( substr, strlen( substr ), 1, &cnbva[0] );
-       ber_str2bv( rdnstr, strlen( rdnstr ), 1, &psubrdn );
-       cnbva[1].bv_len = 0;
-       cnbva[1].bv_val = NULL;
-       mod = (Modifications *) ch_malloc( sizeof( Modifications ));
+       ber_dupbv( &cnbva[0], (struct berval *) &slap_syncrepl_bvc );
+       assert( si->si_rid < 1000 );
+       cnbva[0].bv_len = snprintf( cnbva[0].bv_val,
+               slap_syncrepl_bvc.bv_len + 1,
+               "syncrepl%ld", si->si_rid );
+       mod = (Modifications *) ch_calloc( 1, sizeof( Modifications ));
        mod->sml_op = LDAP_MOD_REPLACE;
-       mod->sml_next = NULL;
-       mod->sml_desc = NULL;
-       ber_str2bv( "cn", strlen("cn"), 1, &mod->sml_type );
-       mod->sml_bvalues = cnbva;
-       mod->sml_nvalues = cnbva;
+       mod->sml_desc = slap_schema.si_ad_cn;
+       mod->sml_type = mod->sml_desc->ad_cname;
+       mod->sml_values = cnbva;
        *modtail = mod;
        modtail = &mod->sml_next;
 
-       ber_dupbv( &scbva[0], si->syncCookie );
-       scbva[1].bv_len = 0;
-       scbva[1].bv_val = NULL;
-       mod = (Modifications *) ch_malloc( sizeof( Modifications ));
+       mod = (Modifications *) ch_calloc( 1, sizeof( Modifications ));
        mod->sml_op = LDAP_MOD_REPLACE;
-       mod->sml_next = NULL;
-       mod->sml_desc = NULL;
-       ber_str2bv( "syncreplCookie", strlen("syncreplCookie"),
-                                               1, &mod->sml_type );
-       mod->sml_bvalues = scbva;
-       mod->sml_nvalues = scbva;
+       mod->sml_desc = slap_schema.si_ad_subtreeSpecification;
+       mod->sml_type = mod->sml_desc->ad_cname;
+       mod->sml_values = ssbva;
        *modtail = mod;
        modtail = &mod->sml_next;
 
-       ber_str2bv( "{}", strlen("{}"), 1, &ssbva[0] );
-       ssbva[1].bv_len = 0;
-       ssbva[1].bv_val = NULL;
-       mod = (Modifications *) ch_malloc( sizeof( Modifications ));
+       /* Keep this last, so we can avoid touching the previous
+        * attributes unnecessarily.
+        */
+       if ( scbva[0].bv_val ) ch_free( scbva[0].bv_val );
+       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_next = NULL;
-       mod->sml_desc = NULL;
-       ber_str2bv( "subtreeSpecification",
-                       strlen("subtreeSpecification"), 1, &mod->sml_type );
-       mod->sml_bvalues = ssbva;
-       mod->sml_nvalues = ssbva;
+       mod->sml_desc = slap_schema.si_ad_syncreplCookie;
+       mod->sml_type = mod->sml_desc->ad_cname;
+       mod->sml_values = scbva;
        *modtail = mod;
        modtail = &mod->sml_next;
 
-       rc = slap_mods_check_syncrepl( op, &modlist, &text, txtbuf, textlen, NULL );
-
-       if ( rc != LDAP_SUCCESS ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, ERR,
-                               "syncrepl_updateCookie: mods check (%s)\n", text, 0, 0 );
-#else
-               Debug( LDAP_DEBUG_ANY, "syncrepl_updateCookie: mods check (%s)\n",
-                        text, 0, 0 );
-#endif
-       }
+       mlnext = mod;
 
        op->o_tag = LDAP_REQ_ADD;
-       rc = slap_mods_opattrs_syncrepl( op, modlist, modtail, &text,txtbuf, textlen );
+       rc = slap_mods_opattrs( op, modlist, modtail,
+                &text, txtbuf, textlen, 0 );
+
+       for ( ml = modlist; ml != NULL; ml = ml->sml_next ) {
+               ml->sml_op = LDAP_MOD_REPLACE;
+       }
 
        if( rc != LDAP_SUCCESS ) {
 #ifdef NEW_LOGGING
                LDAP_LOG( OPERATION, ERR,
-                               "syncrepl_updateCookie: mods opattrs (%s)\n", text, 0, 0 );
+                       "syncrepl_updateCookie: mods opattrs (%s)\n", text, 0, 0 );
 #else
                Debug( LDAP_DEBUG_ANY, "syncrepl_updateCookie: mods opattrs (%s)\n",
                         text, 0, 0 );
@@ -1348,19 +1934,29 @@ syncrepl_updateCookie(
 
        e = ( Entry * ) ch_calloc( 1, sizeof( Entry ));
 
-       build_new_dn( &sub_bv, pdn, &psubrdn );
-       dnPrettyNormal( NULL, &sub_bv, &e->e_name, &e->e_nname, op->o_tmpmemctx );
-       ch_free( sub_bv.bv_val );
-       ch_free( psubrdn.bv_val );
+       slap_syncrepl_cn_bv.bv_val = syncrepl_cbuf;
+       assert( si->si_rid < 1000 );
+       slap_syncrepl_cn_bv.bv_len = snprintf( slap_syncrepl_cn_bv.bv_val,
+               slap_syncrepl_cn_bvc.bv_len + 1,
+               "cn=syncrepl%ld", si->si_rid );
+
+       build_new_dn( &slap_syncrepl_dn_bv, pdn, &slap_syncrepl_cn_bv,
+               op->o_tmpmemctx );
+       ber_dupbv( &e->e_name, &slap_syncrepl_dn_bv );
+       ber_dupbv( &e->e_nname, &slap_syncrepl_dn_bv );
+
+       if ( slap_syncrepl_dn_bv.bv_val ) {
+               sl_free( slap_syncrepl_dn_bv.bv_val, op->o_tmpmemctx );
+       }
 
        e->e_attrs = NULL;
 
-       rc = slap_mods2entry_syncrepl( modlist, &e, 1, &text, txtbuf, textlen );
+       rc = slap_mods2entry( modlist, &e, 1, 1, &text, txtbuf, textlen );
 
        if( rc != LDAP_SUCCESS ) {
 #ifdef NEW_LOGGING
                LDAP_LOG( OPERATION, ERR,
-                               "syncrepl_updateCookie: mods2entry (%s)\n", text, 0, 0 );
+                       "syncrepl_updateCookie: mods2entry (%s)\n", text, 0, 0 );
 #else
                Debug( LDAP_DEBUG_ANY, "syncrepl_updateCookie: mods2entry (%s)\n",
                         text, 0, 0 );
@@ -1377,21 +1973,21 @@ syncrepl_updateCookie(
        /* update persistent cookie */
 update_cookie_retry:
        op->o_tag = LDAP_REQ_MODIFY;
-       op->orm_modlist = modlist;
-       rc = be->be_modify( op, &rs );
-       if ( rc != LDAP_SUCCESS ) {
-               if ( rc == LDAP_REFERRAL ||
-                        rc == LDAP_NO_SUCH_OBJECT ||
-                        rc == DB_NOTFOUND ) {
+       /* Just modify the cookie value, not the entire entry */
+       op->orm_modlist = mod;
+       rc = be->be_modify( op, &rs_modify );
+
+       if ( rs_modify.sr_err != LDAP_SUCCESS ) {
+               if ( rs_modify.sr_err == LDAP_REFERRAL ||
+                        rs_modify.sr_err == LDAP_NO_SUCH_OBJECT ) {
                        op->o_tag = LDAP_REQ_ADD;
                        op->ora_e = e;
-                       rc = be->be_add( op, &rs );
-                       if ( rc != LDAP_SUCCESS ) {
-                               if ( rc == LDAP_ALREADY_EXISTS ) {
+                       rc = be->be_add( op, &rs_add );
+                       if ( rs_add.sr_err != LDAP_SUCCESS ) {
+                               if ( rs_add.sr_err == LDAP_ALREADY_EXISTS ) {
                                        goto update_cookie_retry;
-                               } else if ( rc == LDAP_REFERRAL ||
-                                                       rc == LDAP_NO_SUCH_OBJECT ||
-                                                       rc == DB_NOTFOUND ) {
+                               } else if ( rs_add.sr_err == LDAP_REFERRAL ||
+                                                       rs_add.sr_err == LDAP_NO_SUCH_OBJECT ) {
 #ifdef NEW_LOGGING
                                        LDAP_LOG( OPERATION, ERR,
                                                "cookie will be non-persistent\n",
@@ -1404,34 +2000,48 @@ update_cookie_retry:
                                } else {
 #ifdef NEW_LOGGING
                                        LDAP_LOG( OPERATION, ERR,
-                                               "be_add failed (%d)\n",
-                                               rc, 0, 0 );
+                                               "be_add failed (%d)\n", rs_add.sr_err, 0, 0 );
 #else
                                        Debug( LDAP_DEBUG_ANY,
-                                               "be_add failed (%d)\n",
-                                               rc, 0, 0 );
+                                               "be_add failed (%d)\n", rs_add.sr_err, 0, 0 );
 #endif
                                }
                        } else {
+                               be_entry_release_w( op, e );
                                goto done;
                        }
                } else {
 #ifdef NEW_LOGGING
                        LDAP_LOG( OPERATION, ERR,
-                               "be_modify failed (%d)\n", rc, 0, 0 );
+                               "be_modify failed (%d)\n", rs_modify.sr_err, 0, 0 );
 #else
                        Debug( LDAP_DEBUG_ANY,
-                               "be_modify failed (%d)\n", rc, 0, 0 );
+                               "be_modify failed (%d)\n", rs_modify.sr_err, 0, 0 );
 #endif
                }
        }
 
-       if ( e != NULL )
+       if ( e != NULL ) {
                entry_free( e );
+       }
 
 done :
 
-       for ( ml = modlist; ml != NULL; ml = mlnext ) {
+       if ( cnbva[0].bv_val ) {
+               ch_free( cnbva[0].bv_val );
+               cnbva[0].bv_val = NULL;
+       }
+       if ( scbva[0].bv_val ) {
+               ch_free( scbva[0].bv_val );
+               scbva[0].bv_val = NULL;
+       }
+
+       if ( mlnext->sml_next ) {
+               slap_mods_free( mlnext->sml_next );
+               mlnext->sml_next = NULL;
+       }
+
+       for (ml = modlist ; ml != NULL; ml = mlnext ) {
                mlnext = ml->sml_next;
                free( ml );
        }
@@ -1439,632 +2049,408 @@ done :
        return;
 }
 
-
-static
-int slap_mods_check_syncrepl(
-       Operation *op,
-       Modifications **mlp,
-       const char **text,
-       char *textbuf,
-       size_t textlen,
-       void *ctx )
+int
+syncrepl_isupdate( Operation *op )
 {
-       int rc;
-       Backend *be = op->o_bd;
-       syncinfo_t *si = ( syncinfo_t * ) be->syncinfo;
-       AttributeDescription** descs;
-       int i;
-       Modifications *prevml = NULL;
-       Modifications *nextml = NULL;
-       Modifications *ml = *mlp;
-
-       while ( ml != NULL ) {
-               AttributeDescription *ad = NULL;
-
-               /* convert to attribute description */
-               rc = slap_bv2ad( &ml->sml_type, &ml->sml_desc, text );
-
-               if( rc != LDAP_SUCCESS ) {
-                       snprintf( textbuf, textlen, "%s: %s",
-                                               ml->sml_type.bv_val, *text );
-                       *text = textbuf;
-                       return rc;
-               }
-
-               ad = ml->sml_desc;
+       return ( syncrepl_isupdate_dn( op->o_bd, &op->o_ndn ));
+}
 
-               if ( si->lastmod == LASTMOD_REQ ) {
-                       descs = del_descs_lastmod;
-               } else {
-                       descs = del_descs;
-               }
+int
+syncrepl_isupdate_dn(
+       Backend*                be,
+       struct berval*  ndn
+)
+{
+       syncinfo_t*     si;
+       int                     ret = 0;
 
-               for ( i = 0; descs[i] != NULL; i++ ) {
-                       if ( ad == descs[i] ) {
-                               if ( prevml == NULL ) {
-                                       mlp = &ml->sml_next;
-                                       prevml = NULL;
-                               } else {
-                                       prevml->sml_next = ml->sml_next;
-                               }
-                               slap_mod_free( &ml->sml_mod, 0 );
-                               nextml = ml->sml_next;
-                               free( ml );
-                               ml = nextml;
-                               continue;
+       if ( !LDAP_STAILQ_EMPTY( &be->be_syncinfo )) {
+               LDAP_STAILQ_FOREACH( si, &be->be_syncinfo, si_next ) {
+                       if ( ( ret = dn_match( &si->si_updatedn, ndn ) ) ) {
+                               return ret;
                        }
                }
+       }
+       return 0;
+}
 
-               if( slap_syntax_is_binary( ad->ad_type->sat_syntax )
-                               && !slap_ad_is_binary( ad )) {
-                       /* attribute requires binary transfer */
-                       snprintf( textbuf, textlen,
-                                       "%s: requires ;binary transfer",
-                                       ml->sml_type.bv_val );
-                       *text = textbuf;
-                       return LDAP_UNDEFINED_TYPE;
-               }
-
-               if( !slap_syntax_is_binary( ad->ad_type->sat_syntax )
-                                       && slap_ad_is_binary( ad )) {
-                       /* attribute requires binary transfer */
-                       snprintf( textbuf, textlen,
-                                       "%s: disallows ;binary transfer",
-                                       ml->sml_type.bv_val );
-                       *text = textbuf;
-                       return LDAP_UNDEFINED_TYPE;
-               }
-
-               if( slap_ad_is_tag_range( ad )) {
-                       /* attribute requires binary transfer */
-                       snprintf( textbuf, textlen,
-                                       "%s: inappropriate use of tag range option",
-                                       ml->sml_type.bv_val );
-                       *text = textbuf;
-                       return LDAP_UNDEFINED_TYPE;
-               }
-
-               if ( is_at_obsolete( ad->ad_type ) &&
-                               ( ml->sml_op == LDAP_MOD_ADD || ml->sml_values != NULL ) ) {
-                       /*
-                        * attribute is obsolete,
-                        * only allow replace/delete with no values
-                        */
-                       snprintf( textbuf, textlen,
-                                       "%s: attribute is obsolete",
-                                       ml->sml_type.bv_val );
-                       *text = textbuf;
-                       return LDAP_CONSTRAINT_VIOLATION;
-               }
-
-               /*
-                * check values
-                */
-               if( ml->sml_values != NULL ) {
-                       ber_len_t nvals;
-                       slap_syntax_validate_func *validate =
-                       ad->ad_type->sat_syntax->ssyn_validate;
-                       slap_syntax_transform_func *pretty =
-                       ad->ad_type->sat_syntax->ssyn_pretty;
-
-                       if( !pretty && !validate ) {
-                               *text = "no validator for syntax";
-                               snprintf( textbuf, textlen,
-                                               "%s: no validator for syntax %s",
-                                               ml->sml_type.bv_val,
-                                               ad->ad_type->sat_syntax->ssyn_oid );
-                               *text = textbuf;
-                               return LDAP_INVALID_SYNTAX;
-                       }
+static int
+dn_callback(
+       Operation*      op,
+       SlapReply*      rs
+)
+{
+       dninfo *dni = op->o_callback->sc_private;
 
-                       /*
-                        * check that each value is valid per syntax
-                        * and pretty if appropriate
+       if ( rs->sr_type == REP_SEARCH ) {
+               if ( !BER_BVISNULL( &dni->dn ) ) {
+#ifdef NEW_LOGGING
+                       LDAP_LOG( OPERATION, ERR,
+                               "dn_callback : consistency error - entryUUID is not unique\n", 0, 0, 0 );
+#else
+                       Debug( LDAP_DEBUG_ANY,
+                               "dn_callback : consistency error - entryUUID is not unique\n", 0, 0, 0 );
+#endif
+               } else {
+                       ber_dupbv_x( &dni->dn, &rs->sr_entry->e_name, op->o_tmpmemctx );
+                       ber_dupbv_x( &dni->ndn, &rs->sr_entry->e_nname, op->o_tmpmemctx );
+                       /* If there is a new entry, see if it differs from the old.
+                        * We compare the non-normalized values so that cosmetic changes
+                        * in the provider are always propagated.
                         */
-                       for( nvals = 0; ml->sml_values[nvals].bv_val; nvals++ ) {
-                               struct berval pval = {0, NULL};
-                               if( pretty ) {
-                                       rc = pretty( ad->ad_type->sat_syntax,
-                                                       &ml->sml_values[nvals], &pval, ctx );
-                               } else {
-                                       rc = validate( ad->ad_type->sat_syntax,
-                                                       &ml->sml_values[nvals] );
+                       if ( dni->new_entry ) {
+                               Attribute *old, *new;
+                               int i;
+                               /* Did the DN change? Note that we don't explicitly try to
+                                * discover if the deleteOldRdn argument applies here. It
+                                * would save an unnecessary Modify if we detected it, but
+                                * that's a fair amount of trouble to compare the two attr
+                                * lists in detail.
+                                */
+                               if ( !dn_match( &rs->sr_entry->e_name,
+                                               &dni->new_entry->e_name ) )
+                               {
+                                       dni->renamed = 1;
                                }
-
-                               if( rc != 0 ) {
-                                       snprintf( textbuf, textlen,
-                                                       "%s: value #%ld invalid per syntax",
-                                                       ml->sml_type.bv_val, (long) nvals );
-                                       *text = textbuf;
-                                       return LDAP_INVALID_SYNTAX;
+                               for ( i = 0, old = rs->sr_entry->e_attrs;
+                                               old;
+                                               i++, old = old->a_next )
+                                       ;
+                               dni->attrs = i;
+                               /* We assume that attributes are saved in the same order
+                                * in the remote and local databases. So if we walk through
+                                * the attributeDescriptions one by one they should match in
+                                * lock step. If not, we signal a change. Otherwise we test
+                                * all the values...
+                                */
+                               for ( old = rs->sr_entry->e_attrs, new = dni->new_entry->e_attrs;
+                                               old && new;
+                                               old = old->a_next, new = new->a_next )
+                               {
+                                       if ( old->a_desc != new->a_desc ) {
+                                               dni->wasChanged = 1;
+                                               break;
+                                       }
+                                       for ( i = 0; ; i++ ) {
+                                               int nold, nnew;
+                                               nold = BER_BVISNULL( &old->a_vals[i] );
+                                               nnew = BER_BVISNULL( &new->a_vals[i] );
+                                               /* If both are empty, stop looking */
+                                               if ( nold && nnew ) {
+                                                       break;
+                                               }
+                                               /* If they are different, stop looking */
+                                               if ( nold != nnew ) {
+                                                       dni->wasChanged = 1;
+                                                       break;
+                                               }
+                                               if ( ber_bvcmp( &old->a_vals[i], &new->a_vals[i] )) {
+                                                       dni->wasChanged = 1;
+                                                       break;
+                                               }
+                                       }
+                                       if ( dni->wasChanged ) break;
                                }
-
-                               if( pretty ) {
-                                       ber_memfree( ml->sml_values[nvals].bv_val );
-                                       ml->sml_values[nvals] = pval;
+                               if ( dni->wasChanged ) {
+                                       dni->ads = op->o_tmpalloc( dni->attrs *
+                                               sizeof(AttributeDescription *), op->o_tmpmemctx );
+                                       i = 0;
+                                       for ( old = rs->sr_entry->e_attrs; old; old = old->a_next ) {
+                                               dni->ads[i] = old->a_desc;
+                                               i++;
+                                       }
                                }
                        }
-
-                       /*
-                        * a rough single value check... an additional check is needed
-                        * to catch add of single value to existing single valued attribute
-                        */
-                       if ((ml->sml_op == LDAP_MOD_ADD || ml->sml_op == LDAP_MOD_REPLACE)
-                                       && nvals > 1 && is_at_single_value( ad->ad_type )) {
-                               snprintf( textbuf, textlen,
-                                               "%s: multiple values provided",
-                                               ml->sml_type.bv_val );
-                               *text = textbuf;
-                               return LDAP_CONSTRAINT_VIOLATION;
-                       }
-
-                       if( nvals && ad->ad_type->sat_equality &&
-                                       ad->ad_type->sat_equality->smr_normalize ) {
-                               ml->sml_nvalues = ch_malloc( (nvals+1)*sizeof(struct berval) );
-                               for( nvals = 0; ml->sml_values[nvals].bv_val; nvals++ ) {
-                                       rc = ad->ad_type->sat_equality->smr_normalize( 0,
-                                                       ad->ad_type->sat_syntax, ad->ad_type->sat_equality,
-                                                       &ml->sml_values[nvals], &ml->sml_nvalues[nvals], ctx );
-                                       if( rc ) {
+               }
+       } else if ( rs->sr_type == REP_RESULT ) {
+               if ( rs->sr_err == LDAP_SIZELIMIT_EXCEEDED ) {
 #ifdef NEW_LOGGING
-                                               LDAP_LOG( OPERATION, DETAIL1,
-                                                               "str2entry:  NULL (ssyn_normalize %d)\n", rc, 0, 0 );
+                       LDAP_LOG( OPERATION, ERR,
+                               "dn_callback : consistency error - entryUUID is not unique\n", 0, 0, 0 );
 #else
-                                               Debug( LDAP_DEBUG_ANY,
-                                                               "<= str2entry NULL (ssyn_normalize %d)\n", rc, 0, 0 );
+                       Debug( LDAP_DEBUG_ANY,
+                               "dn_callback : consistency error - entryUUID is not unique\n", 0, 0, 0 );
 #endif
-                                               snprintf( textbuf, textlen,
-                                                               "%s: value #%ld normalization failed",
-                                                               ml->sml_type.bv_val, (long) nvals );
-                                               *text = textbuf;
-                                               return rc;
-                                       }
-                               }
-                               ml->sml_nvalues[nvals].bv_val = NULL;
-                               ml->sml_nvalues[nvals].bv_len = 0;
-                       }
                }
-               prevml = ml;
-               ml = ml->sml_next;
        }
 
        return LDAP_SUCCESS;
 }
 
-static
-int slap_mods_opattrs_syncrepl(
-       Operation *op,
-       Modifications *mods,
-       Modifications **modtail,
-       const char **text,
-       char *textbuf, size_t textlen )
+static int
+nonpresent_callback(
+       Operation*      op,
+       SlapReply*      rs
+)
 {
-       struct berval name = {0, NULL};
-       struct berval timestamp = {0, NULL};
-       struct berval csn = {0, NULL};
-       struct berval nname = {0, NULL};
-       char timebuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
-       char csnbuf[ LDAP_LUTIL_CSNSTR_BUFSIZE ];
-       Modifications *mod;
-       Backend *be = op->o_bd;
-       syncinfo_t *si = ( syncinfo_t * ) be->syncinfo;
-
-       int mop = LDAP_MOD_REPLACE;
-
-       assert( modtail != NULL );
-       assert( *modtail == NULL );
-
-       if( si->lastmod == LASTMOD_GEN ) {
-               struct tm *ltm;
-               time_t now = slap_get_time();
-
-               ldap_pvt_thread_mutex_lock( &gmtime_mutex );
-               ltm = gmtime( &now );
-               lutil_gentime( timebuf, sizeof(timebuf), ltm );
-
-               csn.bv_len = lutil_csnstr( csnbuf, sizeof( csnbuf ), 0, 0 );
-               ldap_pvt_thread_mutex_unlock( &gmtime_mutex );
-               csn.bv_val = csnbuf;
-
-               timestamp.bv_val = timebuf;
-               timestamp.bv_len = strlen(timebuf);
+       syncinfo_t *si = op->o_callback->sc_private;
+       Attribute *a;
+       int count = 0;
+       struct berval* present_uuid = NULL;
+       struct nonpresent_entry *np_entry;
 
-               if( op->o_dn.bv_len == 0 ) {
-                       name.bv_val = SLAPD_ANONYMOUS;
-                       name.bv_len = sizeof(SLAPD_ANONYMOUS)-1;
-                       nname = name;
-               } else {
-                       name = op->o_dn;
-                       nname = op->o_ndn;
-               }
-       }
+       if ( rs->sr_type == REP_RESULT ) {
+               count = avl_free( si->si_presentlist, avl_ber_bvfree );
+               si->si_presentlist = NULL;
 
-       if( op->o_tag == LDAP_REQ_ADD ) {
-               struct berval tmpval = {0, NULL};
+       } else if ( rs->sr_type == REP_SEARCH ) {
+               if ( !(si->si_refreshDelete & NP_DELETE_ONE )) {
+                       a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_entryUUID );
 
-               if( global_schemacheck ) {
-                       int rc = mods_structural_class( mods, &tmpval,
-                                                                       text, textbuf, textlen );
-                       if( rc != LDAP_SUCCESS ) {
-                               return rc;
-                       }
+                       if ( a == NULL ) return 0;
 
-                       mod = (Modifications *) ch_malloc( sizeof( Modifications ) );
-                       mod->sml_op = mop;
-                       mod->sml_type.bv_val = NULL;
-                       mod->sml_desc = slap_schema.si_ad_structuralObjectClass;
-                       mod->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
-                       ber_dupbv( &mod->sml_values[0], &tmpval );
-                       mod->sml_values[1].bv_len = 0;
-                       mod->sml_values[1].bv_val = NULL;
-                       assert( mod->sml_values[0].bv_val );
-                       mod->sml_nvalues = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
-                       ber_dupbv( &mod->sml_nvalues[0], &tmpval );
-                       mod->sml_nvalues[1].bv_len = 0;
-                       mod->sml_nvalues[1].bv_val = NULL;
-                       assert( mod->sml_nvalues[0].bv_val );
-                       *modtail = mod;
-                       modtail = &mod->sml_next;
+                       present_uuid = avl_find( si->si_presentlist, &a->a_nvals[0],
+                               syncuuid_cmp );
                }
 
-               if( si->lastmod == LASTMOD_GEN ) {
-                       mod = (Modifications *) ch_malloc( sizeof( Modifications ) );
-                       mod->sml_op = mop;
-                       mod->sml_type.bv_val = NULL;
-                       mod->sml_desc = slap_schema.si_ad_creatorsName;
-                       mod->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
-                       ber_dupbv( &mod->sml_values[0], &name );
-                       mod->sml_values[1].bv_len = 0;
-                       mod->sml_values[1].bv_val = NULL;
-                       assert( mod->sml_values[0].bv_val );
-                       mod->sml_nvalues = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
-                       ber_dupbv( &mod->sml_nvalues[0], &nname );
-                       mod->sml_nvalues[1].bv_len = 0;
-                       mod->sml_nvalues[1].bv_val = NULL;
-                       assert( mod->sml_nvalues[0].bv_val );
-                       *modtail = mod;
-                       modtail = &mod->sml_next;
+               if ( present_uuid == NULL ) {
+                       np_entry = (struct nonpresent_entry *)
+                               ch_calloc( 1, sizeof( struct nonpresent_entry ));
+                       np_entry->npe_name = ber_dupbv( NULL, &rs->sr_entry->e_name );
+                       np_entry->npe_nname = ber_dupbv( NULL, &rs->sr_entry->e_nname );
+                       LDAP_LIST_INSERT_HEAD( &si->si_nonpresentlist, np_entry, npe_link );
 
-                       mod = (Modifications *) ch_malloc( sizeof( Modifications ) );
-                       mod->sml_op = mop;
-                       mod->sml_type.bv_val = NULL;
-                       mod->sml_desc = slap_schema.si_ad_createTimestamp;
-                       mod->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
-                       ber_dupbv( &mod->sml_values[0], &timestamp );
-                       mod->sml_values[1].bv_len = 0;
-                       mod->sml_values[1].bv_val = NULL;
-                       assert( mod->sml_values[0].bv_val );
-                       mod->sml_nvalues = NULL;
-                       *modtail = mod;
-                       modtail = &mod->sml_next;
+               } else {
+                       avl_delete( &si->si_presentlist,
+                                       &a->a_nvals[0], syncuuid_cmp );
+                       ch_free( present_uuid->bv_val );
+                       ch_free( present_uuid );
                }
        }
+       return LDAP_SUCCESS;
+}
 
-       if( si->lastmod == LASTMOD_GEN ) {
-               mod = (Modifications *) ch_malloc( sizeof( Modifications ) );
-               mod->sml_op = mop;
-               mod->sml_type.bv_val = NULL;
-               mod->sml_desc = slap_schema.si_ad_entryCSN;
-               mod->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
-               ber_dupbv( &mod->sml_values[0], &csn );
-               mod->sml_values[1].bv_len = 0;
-               mod->sml_values[1].bv_val = NULL;
-               assert( mod->sml_values[0].bv_val );
-               mod->sml_nvalues = NULL;
-               *modtail = mod;
-               modtail = &mod->sml_next;
-
-               mod = (Modifications *) ch_malloc( sizeof( Modifications ) );
-               mod->sml_op = mop;
-               mod->sml_type.bv_val = NULL;
-               mod->sml_desc = slap_schema.si_ad_modifiersName;
-               mod->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
-               ber_dupbv( &mod->sml_values[0], &name );
-               mod->sml_values[1].bv_len = 0;
-               mod->sml_values[1].bv_val = NULL;
-               assert( mod->sml_values[0].bv_val );
-               mod->sml_nvalues = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
-               ber_dupbv( &mod->sml_nvalues[0], &nname );
-               mod->sml_nvalues[1].bv_len = 0;
-               mod->sml_nvalues[1].bv_val = NULL;
-               assert( mod->sml_nvalues[0].bv_val );
-               *modtail = mod;
-               modtail = &mod->sml_next;
-
-               mod = (Modifications *) ch_malloc( sizeof( Modifications ) );
-               mod->sml_op = mop;
-               mod->sml_type.bv_val = NULL;
-               mod->sml_desc = slap_schema.si_ad_modifyTimestamp;
-               mod->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
-               ber_dupbv( &mod->sml_values[0], &timestamp );
-               mod->sml_values[1].bv_len = 0;
-               mod->sml_values[1].bv_val = NULL;
-               assert( mod->sml_values[0].bv_val );
-               mod->sml_nvalues = NULL;
-               *modtail = mod;
-               modtail = &mod->sml_next;
+static int
+null_callback(
+       Operation*      op,
+       SlapReply*      rs )
+{
+       if ( rs->sr_err != LDAP_SUCCESS &&
+               rs->sr_err != LDAP_REFERRAL &&
+               rs->sr_err != LDAP_ALREADY_EXISTS &&
+               rs->sr_err != LDAP_NO_SUCH_OBJECT &&
+               rs->sr_err != LDAP_NOT_ALLOWED_ON_NONLEAF )
+       {
+#ifdef NEW_LOGGING
+               LDAP_LOG( OPERATION, ERR,
+                       "null_callback : error code 0x%x\n",
+                       rs->sr_err, 0, 0 );
+#else
+               Debug( LDAP_DEBUG_ANY,
+                       "null_callback : error code 0x%x\n",
+                       rs->sr_err, 0, 0 );
+#endif
        }
-
-       *modtail = NULL;
        return LDAP_SUCCESS;
 }
 
-
-static
-int slap_mods2entry_syncrepl(
-       Modifications *mods,
-       Entry **e,
-       int repl_user,
-       const char **text,
-       char *textbuf, size_t textlen )
+Entry *
+slap_create_syncrepl_entry(
+       Backend *be,
+       struct berval *context_csn,
+       struct berval *rdn,
+       struct berval *cn )
 {
-       Attribute **tail = &(*e)->e_attrs;
-       assert( *tail == NULL );
+       Entry* e;
 
-       *text = textbuf;
+       struct berval bv;
 
-       for( ; mods != NULL; mods = mods->sml_next ) {
-               Attribute *attr;
+       e = ( Entry * ) ch_calloc( 1, sizeof( Entry ));
 
-               assert( mods->sml_desc != NULL );
+       attr_merge( e, slap_schema.si_ad_objectClass, ocbva, NULL );
 
-               attr = attr_find( (*e)->e_attrs, mods->sml_desc );
+       attr_merge_one( e, slap_schema.si_ad_structuralObjectClass,
+               &ocbva[1], NULL );
 
-               if( attr != NULL ) {
-#define SLURPD_FRIENDLY
-#ifdef SLURPD_FRIENDLY
-                       ber_len_t i,j;
+       attr_merge_one( e, slap_schema.si_ad_cn, cn, NULL );
 
-                       if( !repl_user ) {
-                               snprintf( textbuf, textlen,
-                                       "attribute '%s' provided more than once",
-                                       mods->sml_desc->ad_cname.bv_val );
-                               return LDAP_TYPE_OR_VALUE_EXISTS;
-                       }
+       if ( context_csn ) {
+               attr_merge_one( e, slap_schema.si_ad_syncreplCookie,
+                       context_csn, NULL );
+       }
 
-                       for( i=0; attr->a_vals[i].bv_val; i++ ) {
-                               /* count them */
-                       }
-                       for( j=0; mods->sml_values[j].bv_val; j++ ) {
-                               /* count them */
-                       }
-                       j++;    /* NULL */
-                       
-                       attr->a_vals = ch_realloc( attr->a_vals,
-                               sizeof( struct berval ) * (i+j) );
+       bv.bv_val = "{}";
+       bv.bv_len = sizeof("{}")-1;
+       attr_merge_one( e, slap_schema.si_ad_subtreeSpecification, &bv, NULL );
 
-                       /* should check for duplicates */
+       build_new_dn( &e->e_name, &be->be_nsuffix[0], rdn, NULL );
+       ber_dupbv( &e->e_nname, &e->e_name );
 
-                       AC_MEMCPY( &attr->a_vals[i], mods->sml_values,
-                               sizeof( struct berval ) * j );
+       return e;
+}
 
-                       if( attr->a_nvals ) {
-                               attr->a_nvals = ch_realloc( attr->a_nvals,
-                                       sizeof( struct berval ) * (i+j) );
+struct berval *
+slap_uuidstr_from_normalized(
+       struct berval* uuidstr,
+       struct berval* normalized,
+       void *ctx )
+{
+       struct berval *new;
+       unsigned char nibble;
+       int i, d = 0;
 
-                               AC_MEMCPY( &attr->a_nvals[i], mods->sml_nvalues,
-                                       sizeof( struct berval ) * j );
+       if ( normalized == NULL )
+               return NULL;
 
-                               /* trim the mods array */
-                               ch_free( mods->sml_nvalues );
-                               mods->sml_nvalues = NULL;
-                       }
+       if ( normalized->bv_len != 16 ) {
+               return NULL;
+       }
 
-                       continue;
-#else
-                       snprintf( textbuf, textlen,
-                               "attribute '%s' provided more than once",
-                               mods->sml_desc->ad_cname.bv_val );
-                       return LDAP_TYPE_OR_VALUE_EXISTS;
-#endif
-               }
+       if ( uuidstr ) {
+               new = uuidstr;
+       } else {
+               new = (struct berval *)sl_malloc( sizeof(struct berval), ctx );
+       }
 
-               if( mods->sml_values[1].bv_val != NULL ) {
-                       /* check for duplicates */
-                       int             i, j;
-                       MatchingRule *mr = mods->sml_desc->ad_type->sat_equality;
-
-                       /* check if the values we're adding already exist */
-                       if( mr == NULL || !mr->smr_match ) {
-                               for ( i = 0; mods->sml_bvalues[i].bv_val != NULL; i++ ) {
-                                       /* test asserted values against themselves */
-                                       for( j = 0; j < i; j++ ) {
-                                               if ( bvmatch( &mods->sml_bvalues[i],
-                                                       &mods->sml_bvalues[j] ) ) {
-                                                       /* value exists already */
-                                                       snprintf( textbuf, textlen,
-                                                               "%s: value #%d provided more than once",
-                                                               mods->sml_desc->ad_cname.bv_val, j );
-                                                       return LDAP_TYPE_OR_VALUE_EXISTS;
-                                               }
-                                       }
-                               }
+       new->bv_len = 36;
 
-                       } else {
-                               int             rc;
-                               const char      *text = NULL;
-                               char            textbuf[ SLAP_TEXT_BUFLEN ]  = { '\0' };
-                               
-                               rc = modify_check_duplicates( mods->sml_desc, mr,
-                                               NULL, mods->sml_bvalues, 0,
-                                               &text, textbuf, sizeof( textbuf ) );
-
-                               if ( rc != LDAP_SUCCESS ) {
-                                       return rc;
-                               }
-                       }
-               }
+       if (( new->bv_val = sl_malloc( new->bv_len + 1, ctx )) == NULL) {
+               if ( !uuidstr )
+                       sl_free( new, ctx );
+               return NULL;
+       }
 
-               attr = ch_calloc( 1, sizeof(Attribute) );
+       for ( i = 0; i < 16; i++ ) {
+               if ( i == 4 || i == 6 || i == 8 || i == 10 ) {
+                       new->bv_val[(i<<1)+d] = '-';
+                       d += 1;
+               }
 
-               /* move ad to attr structure */
-               attr->a_desc = mods->sml_desc;
+               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';
+               }
 
-               /* move values to attr structure */
-               /*      should check for duplicates */
-               attr->a_vals = mods->sml_values;
+               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';
+               }
+       }
 
-               attr->a_nvals = mods->sml_nvalues;
+       new->bv_val[new->bv_len] = '\0';
 
-               *tail = attr;
-               tail = &attr->a_next;
-       }
+       return new;
+}
 
-       return LDAP_SUCCESS;
+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 ( memcmp( uuid1->bv_val, uuid2->bv_val, uuid1->bv_len ) );
 }
 
-void
+static void
 avl_ber_bvfree( void *bv )
 {
        if( bv == NULL ) {
                return;
        }
        if ( ((struct berval *)bv)->bv_val != NULL ) {
-               ber_memfree ( ((struct berval *)bv)->bv_val );
+               ch_free ( ((struct berval *)bv)->bv_val );
        }
-       ber_memfree ( (char *) bv );
+       ch_free ( (char *) bv );
 }
 
-static int
-cookie_callback(
-       Operation* op,
-       SlapReply* rs
-)
+void
+syncinfo_free( syncinfo_t *sie )
 {
-       syncinfo_t *si = op->o_callback->sc_private;
-       Attribute *a;
-
-       if ( rs->sr_type != REP_SEARCH ) return LDAP_SUCCESS;
-
-       a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_syncreplCookie );
-
-       if ( a == NULL ) {
-               si->syncCookie = NULL;
-       } else {
-               si->syncCookie = ber_dupbv( NULL, &a->a_vals[0] );
+       ldap_pvt_thread_mutex_destroy( &sie->si_mutex );
+       if ( sie->si_provideruri ) {
+               ch_free( sie->si_provideruri );
        }
-       return LDAP_SUCCESS;
-}
-
-static int
-dn_callback(
-       Operation*      op,
-       SlapReply*      rs
-)
-{
-       syncinfo_t *si = op->o_callback->sc_private;
-       
-       if ( rs->sr_type == REP_SEARCH ) {
-               si->syncUUID_ndn = &rs->sr_entry->e_nname;
+       if ( sie->si_provideruri_bv ) {
+               ber_bvarray_free( sie->si_provideruri_bv );
        }
-
-       return LDAP_SUCCESS;
-}
-
-static int
-nonpresent_callback(
-       Operation*      op,
-       SlapReply*      rs
-)
-{
-       syncinfo_t *si = op->o_callback->sc_private;
-       Attribute *a;
-       int count = 0;
-       struct berval* present_uuid = NULL;
-       slap_callback cb;
-       SlapReply       rs_cb = {REP_RESULT};
-       struct nonpresent_entry *np_entry;
-
-       if ( rs->sr_type == REP_RESULT ) {
-               count = avl_free( si->presentlist, avl_ber_bvfree );
-               return LDAP_SUCCESS;
-       } else if ( rs->sr_type == REP_SEARCH ) {
-               a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_entryUUID );
-
-               if ( a == NULL )
-                       return 0;
-
-               present_uuid = avl_find( si->presentlist, &a->a_vals[0], syncuuid_cmp );
-
-               if ( present_uuid == NULL ) {
-                       np_entry = (struct nonpresent_entry *)
-                                               ch_calloc( 1, sizeof( struct nonpresent_entry ));
-                       np_entry->dn = ber_dupbv( NULL, &rs->sr_entry->e_name );
-                       np_entry->ndn = ber_dupbv( NULL, &rs->sr_entry->e_nname );
-                       LDAP_LIST_INSERT_HEAD( &si->nonpresentlist, np_entry, np_link );
-               } else {
-                       avl_delete( &si->presentlist,
-                                       &a->a_vals[0], syncuuid_cmp );
-               }
-               return LDAP_SUCCESS;
-       } else {
-               return LDAP_SUCCESS;
+       if ( sie->si_updatedn.bv_val ) {
+               ch_free( sie->si_updatedn.bv_val );
        }
-
-}
-
-static int
-null_callback(
-       Operation*      op,
-       SlapReply*      rs
-)
-{
-       if ( rs->sr_err != LDAP_SUCCESS &&
-                rs->sr_err != LDAP_REFERRAL &&
-                rs->sr_err != LDAP_ALREADY_EXISTS &&
-                rs->sr_err != LDAP_NO_SUCH_OBJECT &&
-                rs->sr_err != DB_NOTFOUND ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, ERR,
-                       "null_callback : error code 0x%x\n",
-                       rs->sr_err, 0, 0 );
-#else
-               Debug( LDAP_DEBUG_ANY,
-                       "null_callback : error code 0x%x\n",
-                       rs->sr_err, 0, 0 );
-#endif
+       if ( sie->si_binddn ) {
+               ch_free( sie->si_binddn );
        }
-       return LDAP_SUCCESS;
-}
-
-
-char **
-str2clist( char **out, char *in, const char *brkstr )
-{
-       char    *str;
-       char    *s;
-       char    *lasts;
-       int     i, j;
-       const char *text;
-       char    **new;
-
-       /* find last element in list */
-       for (i = 0; out && out[i]; i++);
-       
-       /* protect the input string from strtok */
-       str = ch_strdup( in );
-
-       /* Count words in string */
-       j=1;
-       for ( s = str; *s; s++ ) {
-               if ( strchr( brkstr, *s ) != NULL ) {
-                       j++;
+       if ( sie->si_passwd ) {
+               ch_free( sie->si_passwd );
+       }
+       if ( sie->si_saslmech ) {
+               ch_free( sie->si_saslmech );
+       }
+       if ( sie->si_secprops ) {
+               ch_free( sie->si_secprops );
+       }
+       if ( sie->si_realm ) {
+               ch_free( sie->si_realm );
+       }
+       if ( sie->si_authcId ) {
+               ch_free( sie->si_authcId );
+       }
+       if ( sie->si_authzId ) {
+               ch_free( sie->si_authzId );
+       }
+       if ( sie->si_filterstr.bv_val ) {
+               ch_free( sie->si_filterstr.bv_val );
+       }
+       if ( sie->si_base.bv_val ) {
+               ch_free( sie->si_base.bv_val );
+       }
+       if ( sie->si_attrs ) {
+               int i = 0;
+               while ( sie->si_attrs[i] != NULL ) {
+                       ch_free( sie->si_attrs[i] );
+                       i++;
                }
+               ch_free( sie->si_attrs );
        }
-
-       out = ch_realloc( out, ( i + j + 1 ) * sizeof( char * ) );
-       new = out + i;
-       for ( s = ldap_pvt_strtok( str, brkstr, &lasts );
-               s != NULL;
-               s = ldap_pvt_strtok( NULL, brkstr, &lasts ) )
-       {
-               *new = ch_strdup( s );
-               new++;
+       if ( sie->si_exattrs ) {
+               int i = 0;
+               while ( sie->si_exattrs[i] != NULL ) {
+                       ch_free( sie->si_exattrs[i] );
+                       i++;
+               }
+               ch_free( sie->si_exattrs );
        }
-
-       *new = NULL;
-       free( str );
-       return( out );
+       if ( sie->si_retryinterval ) {
+               ch_free( sie->si_retryinterval );
+       }
+       if ( sie->si_retrynum ) {
+               ch_free( sie->si_retrynum );
+       }
+       if ( sie->si_retrynum_init ) {
+               ch_free( sie->si_retrynum_init );
+       }
+       slap_sync_cookie_free( &sie->si_syncCookie, 0 );
+       if ( sie->si_presentlist ) {
+           avl_free( sie->si_presentlist, avl_ber_bvfree );
+       }
+       if ( sie->si_ld ) {
+               ldap_ld_free( sie->si_ld, 1, NULL, NULL );
+       }
+       while ( !LDAP_LIST_EMPTY( &sie->si_nonpresentlist )) {
+               struct nonpresent_entry* npe;
+               npe = LDAP_LIST_FIRST( &sie->si_nonpresentlist );
+               LDAP_LIST_REMOVE( npe, npe_link );
+               if ( npe->npe_name ) {
+                       if ( npe->npe_name->bv_val ) {
+                               ch_free( npe->npe_name->bv_val );
+                       }
+                       ch_free( npe->npe_name );
+               }
+               if ( npe->npe_nname ) {
+                       if ( npe->npe_nname->bv_val ) {
+                               ch_free( npe->npe_nname->bv_val );
+                       }
+                       ch_free( npe->npe_nname );
+               }
+               ch_free( npe );
+       }
+       ch_free( sie );
 }
-
-#endif