]> git.sur5r.net Git - openldap/blobdiff - servers/slapd/overlays/rwm.c
Partial revert of f30269f5d2e4bb5ee7486fe6542078d1b59dba6d
[openldap] / servers / slapd / overlays / rwm.c
index 8bdf9355bbc5394e7d3f68cd6d5cd89ac2360e2e..cc6211ed2508d4084d84e088afea42fe18a5471a 100644 (file)
@@ -2,7 +2,7 @@
 /* $OpenLDAP$ */
 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
  *
- * Copyright 2003-2007 The OpenLDAP Foundation.
+ * Copyright 2003-2012 The OpenLDAP Foundation.
  * Portions Copyright 2003 Pierangelo Masarati.
  * All rights reserved.
  *
@@ -24,6 +24,8 @@
 #include <ac/string.h>
 
 #include "slap.h"
+#include "config.h"
+#include "lutil.h"
 #include "rwm.h"
 
 typedef struct rwm_op_state {
@@ -32,77 +34,136 @@ typedef struct rwm_op_state {
        struct berval ro_ndn;
        struct berval r_dn;
        struct berval r_ndn;
+       struct berval rx_dn;
+       struct berval rx_ndn;
+       AttributeName *mapped_attrs;
        OpRequest o_request;
 } rwm_op_state;
 
-static int
-rwm_db_destroy( BackendDB *be );
-
 typedef struct rwm_op_cb {
        slap_callback cb;
        rwm_op_state ros;
 } rwm_op_cb;
 
 static int
-rwm_op_cleanup( Operation *op, SlapReply *rs )
-{
-       slap_callback   *cb = op->o_callback;
-       rwm_op_state *ros = cb->sc_private;
+rwm_db_destroy( BackendDB *be, ConfigReply *cr );
 
-       if ( rs->sr_type == REP_RESULT || rs->sr_type == REP_EXTENDED ||
-               op->o_abandon || rs->sr_err == SLAPD_ABANDON ) {
+static int
+rwm_send_entry( Operation *op, SlapReply *rs );
 
-               op->o_req_dn = ros->ro_dn;
-               op->o_req_ndn = ros->ro_ndn;
+static void
+rwm_op_rollback( Operation *op, SlapReply *rs, rwm_op_state *ros )
+{
+       /* in case of successful extended operation cleanup
+        * gets called *after* (ITS#6632); this hack counts
+        * on others to cleanup our o_req_dn/o_req_ndn,
+        * while we cleanup theirs. */
+       if ( ros->r_tag == LDAP_REQ_EXTENDED && rs->sr_err == LDAP_SUCCESS ) {
+               if ( !BER_BVISNULL( &ros->rx_dn ) ) {
+                       ch_free( ros->rx_dn.bv_val );
+               }
+               if ( !BER_BVISNULL( &ros->rx_ndn ) ) {
+                       ch_free( ros->rx_ndn.bv_val );
+               }
+
+       } else {
+               if ( !BER_BVISNULL( &ros->ro_dn ) ) {
+                       op->o_req_dn = ros->ro_dn;
+               }
+               if ( !BER_BVISNULL( &ros->ro_ndn ) ) {
+                       op->o_req_ndn = ros->ro_ndn;
+               }
 
                if ( !BER_BVISNULL( &ros->r_dn )
-                       && ros->r_dn.bv_val != ros->r_ndn.bv_val )
+                       && ros->r_dn.bv_val != ros->ro_dn.bv_val )
                {
+                       assert( ros->r_dn.bv_val != ros->r_ndn.bv_val );
                        ch_free( ros->r_dn.bv_val );
-                       BER_BVZERO( &ros->r_dn );
                }
 
-               if ( !BER_BVISNULL( &ros->r_ndn ) ) {
+               if ( !BER_BVISNULL( &ros->r_ndn )
+                       && ros->r_ndn.bv_val != ros->ro_ndn.bv_val )
+               {
                        ch_free( ros->r_ndn.bv_val );
-                       BER_BVZERO( &ros->r_ndn );
                }
+       }
 
-               switch( ros->r_tag ) {
-               case LDAP_REQ_COMPARE:
-                       if ( op->orc_ava->aa_value.bv_val != ros->orc_ava->aa_value.bv_val )
-                               op->o_tmpfree( op->orc_ava->aa_value.bv_val, op->o_tmpmemctx );
-                       op->orc_ava = ros->orc_ava;
-                       break;
-               case LDAP_REQ_MODIFY:
-                       slap_mods_free( op->orm_modlist, 1 );
-                       op->orm_modlist = ros->orm_modlist;
-                       break;
-               case LDAP_REQ_MODRDN:
-                       if ( op->orr_newSup != ros->orr_newSup ) {
-                               ch_free( op->orr_newSup->bv_val );
-                               ch_free( op->orr_nnewSup->bv_val );
-                               op->o_tmpfree( op->orr_newSup, op->o_tmpmemctx );
-                               op->o_tmpfree( op->orr_nnewSup, op->o_tmpmemctx );
-                               op->orr_newSup = ros->orr_newSup;
-                               op->orr_nnewSup = ros->orr_nnewSup;
-                       }
-                       break;
-               case LDAP_REQ_SEARCH:
-                       ch_free( op->ors_attrs );
-                       filter_free_x( op, op->ors_filter );
-                       ch_free( op->ors_filterstr.bv_val );
-                       op->ors_attrs = ros->ors_attrs;
-                       op->ors_filter = ros->ors_filter;
-                       op->ors_filterstr = ros->ors_filterstr;
-                       break;
-               case LDAP_REQ_EXTENDED:
-                       if ( op->ore_reqdata != ros->ore_reqdata ) {
-                               ber_bvfree( op->ore_reqdata );
-                               op->ore_reqdata = ros->ore_reqdata;
-                       }
-                       break;
-               default:        break;
+       BER_BVZERO( &ros->r_dn );
+       BER_BVZERO( &ros->r_ndn );
+       BER_BVZERO( &ros->ro_dn );
+       BER_BVZERO( &ros->ro_ndn );
+       BER_BVZERO( &ros->rx_dn );
+       BER_BVZERO( &ros->rx_ndn );
+
+       switch( ros->r_tag ) {
+       case LDAP_REQ_COMPARE:
+               if ( op->orc_ava->aa_value.bv_val != ros->orc_ava->aa_value.bv_val )
+                       op->o_tmpfree( op->orc_ava->aa_value.bv_val, op->o_tmpmemctx );
+               op->orc_ava = ros->orc_ava;
+               break;
+       case LDAP_REQ_MODIFY:
+               slap_mods_free( op->orm_modlist, 1 );
+               op->orm_modlist = ros->orm_modlist;
+               break;
+       case LDAP_REQ_MODRDN:
+               if ( op->orr_newSup != ros->orr_newSup ) {
+                       ch_free( op->orr_newSup->bv_val );
+                       ch_free( op->orr_nnewSup->bv_val );
+                       op->o_tmpfree( op->orr_newSup, op->o_tmpmemctx );
+                       op->o_tmpfree( op->orr_nnewSup, op->o_tmpmemctx );
+                       op->orr_newSup = ros->orr_newSup;
+                       op->orr_nnewSup = ros->orr_nnewSup;
+               }
+               if ( op->orr_newrdn.bv_val != ros->orr_newrdn.bv_val ) {
+                       ch_free( op->orr_newrdn.bv_val );
+                       ch_free( op->orr_nnewrdn.bv_val );
+                       op->orr_newrdn = ros->orr_newrdn;
+                       op->orr_nnewrdn = ros->orr_nnewrdn;
+               }
+               break;
+       case LDAP_REQ_SEARCH:
+               op->o_tmpfree( ros->mapped_attrs, op->o_tmpmemctx );
+               filter_free_x( op, op->ors_filter, 1 );
+               op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
+               op->ors_attrs = ros->ors_attrs;
+               op->ors_filter = ros->ors_filter;
+               op->ors_filterstr = ros->ors_filterstr;
+               break;
+       case LDAP_REQ_EXTENDED:
+               if ( op->ore_reqdata != ros->ore_reqdata ) {
+                       ber_bvfree( op->ore_reqdata );
+                       op->ore_reqdata = ros->ore_reqdata;
                }
+               break;
+       case LDAP_REQ_BIND:
+               if ( rs->sr_err == LDAP_SUCCESS ) {
+#if 0
+                       ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
+                       /* too late, c_mutex released */
+                       Debug( LDAP_DEBUG_ANY, "*** DN: \"%s\" => \"%s\"\n",
+                               op->o_conn->c_ndn.bv_val,
+                               op->o_req_ndn.bv_val );
+                       ber_bvreplace( &op->o_conn->c_ndn,
+                               &op->o_req_ndn );
+                       ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
+#endif
+               }
+               break;
+       default:        break;
+       }
+}
+
+static int
+rwm_op_cleanup( Operation *op, SlapReply *rs )
+{
+       slap_callback   *cb = op->o_callback;
+       rwm_op_state *ros = cb->sc_private;
+
+       if ( rs->sr_type == REP_RESULT || rs->sr_type == REP_EXTENDED ||
+               op->o_abandon || rs->sr_err == SLAPD_ABANDON )
+       {
+               rwm_op_rollback( op, rs, ros );
+
                op->o_callback = op->o_callback->sc_next;
                op->o_tmpfree( cb, op->o_tmpmemctx );
        }
@@ -111,9 +172,9 @@ rwm_op_cleanup( Operation *op, SlapReply *rs )
 }
 
 static rwm_op_cb *
-rwm_callback_get( Operation *op, SlapReply *rs )
+rwm_callback_get( Operation *op )
 {
-       rwm_op_cb       *roc = NULL;
+       rwm_op_cb       *roc;
 
        roc = op->o_tmpalloc( sizeof( struct rwm_op_cb ), op->o_tmpmemctx );
        roc->cb.sc_cleanup = rwm_op_cleanup;
@@ -123,9 +184,12 @@ rwm_callback_get( Operation *op, SlapReply *rs )
        roc->ros.r_tag = op->o_tag;
        roc->ros.ro_dn = op->o_req_dn;
        roc->ros.ro_ndn = op->o_req_ndn;
-       roc->ros.o_request = op->o_request;
        BER_BVZERO( &roc->ros.r_dn );
        BER_BVZERO( &roc->ros.r_ndn );
+       BER_BVZERO( &roc->ros.rx_dn );
+       BER_BVZERO( &roc->ros.rx_ndn );
+       roc->ros.mapped_attrs = NULL;
+       roc->ros.o_request = op->o_request;
 
        return roc;
 }
@@ -148,14 +212,9 @@ rwm_op_dn_massage( Operation *op, SlapReply *rs, void *cookie,
         * Rewrite the dn if needed
         */
        dc.rwmap = rwmap;
-#ifdef ENABLE_REWRITE
        dc.conn = op->o_conn;
        dc.rs = rs;
        dc.ctx = (char *)cookie;
-#else /* ! ENABLE_REWRITE */
-       dc.tofrom = ((int *)cookie)[0];
-       dc.normalized = 0;
-#endif /* ! ENABLE_REWRITE */
 
        /* NOTE: in those cases where only the ndn is available,
         * and the caller sets op->o_req_dn = op->o_req_ndn,
@@ -181,12 +240,19 @@ rwm_op_dn_massage( Operation *op, SlapReply *rs, void *cookie,
 
        if ( op->o_req_dn.bv_val != op->o_req_ndn.bv_val ) {
                op->o_req_dn = dn;
-               ros->r_dn  = dn;
+               assert( BER_BVISNULL( &ros->r_dn ) );
+               ros->r_dn = dn;
        } else {
                op->o_req_dn = ndn;
        }
-       ros->r_ndn = ndn;
        op->o_req_ndn = ndn;
+       assert( BER_BVISNULL( &ros->r_ndn ) );
+       ros->r_ndn = ndn;
+
+       if ( ros->r_tag == LDAP_REQ_EXTENDED ) {
+               ros->rx_dn = ros->r_dn;
+               ros->rx_ndn = ros->r_ndn;
+       }
 
        return LDAP_SUCCESS;
 }
@@ -204,14 +270,9 @@ rwm_op_add( Operation *op, SlapReply *rs )
        char                    *olddn = op->o_req_dn.bv_val;
        int                     isupdate;
 
-       rwm_op_cb *roc = rwm_callback_get( op, rs );
+       rwm_op_cb               *roc = rwm_callback_get( op );
 
-#ifdef ENABLE_REWRITE
        rc = rwm_op_dn_massage( op, rs, "addDN", &roc->ros );
-#else /* ! ENABLE_REWRITE */
-       rc = 1;
-       rc = rwm_op_dn_massage( op, rs, &rc, &roc->ros );
-#endif /* ! ENABLE_REWRITE */
        if ( rc != LDAP_SUCCESS ) {
                op->o_bd->bd_info = (BackendInfo *)on->on_info;
                send_ldap_error( op, rs, rc, "addDN massage error" );
@@ -233,9 +294,7 @@ rwm_op_add( Operation *op, SlapReply *rs )
                {
                        int             j, last;
 
-                       for ( last = 0; !BER_BVISNULL( &(*ap)->a_vals[ last ] ); last++ )
-                                       /* count values */ ;
-                       last--;
+                       last = (*ap)->a_numvals - 1;
                        for ( j = 0; !BER_BVISNULL( &(*ap)->a_vals[ j ] ); j++ ) {
                                struct ldapmapping      *mapping = NULL;
 
@@ -252,6 +311,7 @@ rwm_op_add( Operation *op, SlapReply *rs )
                                                        (*ap)->a_vals[ j ] = (*ap)->a_vals[ last ];
                                                }
                                                BER_BVZERO( &(*ap)->a_vals[ last ] );
+                                               (*ap)->a_numvals--;
                                                last--;
                                                j--;
                                        }
@@ -284,29 +344,17 @@ rwm_op_add( Operation *op, SlapReply *rs )
                                 * FIXME: rewrite could fail; in this case
                                 * the operation should give up, right?
                                 */
-#ifdef ENABLE_REWRITE
                                rc = rwm_dnattr_rewrite( op, rs, "addAttrDN",
                                                (*ap)->a_vals,
                                                (*ap)->a_nvals ? &(*ap)->a_nvals : NULL );
-#else /* ! ENABLE_REWRITE */
-                               rc = 1;
-                               rc = rwm_dnattr_rewrite( op, rs, &rc, (*ap)->a_vals,
-                                               (*ap)->a_nvals ? &(*ap)->a_nvals : NULL );
-#endif /* ! ENABLE_REWRITE */
                                if ( rc ) {
                                        goto cleanup_attr;
                                }
 
                        } else if ( (*ap)->a_desc == slap_schema.si_ad_ref ) {
-#ifdef ENABLE_REWRITE
                                rc = rwm_referral_rewrite( op, rs, "referralAttrDN",
                                                (*ap)->a_vals,
                                                (*ap)->a_nvals ? &(*ap)->a_nvals : NULL );
-#else /* ! ENABLE_REWRITE */
-                               rc = 1;
-                               rc = rwm_referral_rewrite( op, rs, &rc, (*ap)->a_vals,
-                                               (*ap)->a_nvals ? &(*ap)->a_nvals : NULL );
-#endif /* ! ENABLE_REWRITE */
                                if ( rc != LDAP_SUCCESS ) {
                                        goto cleanup_attr;
                                }
@@ -335,7 +383,6 @@ cleanup_attr:;
        return SLAP_CB_CONTINUE;
 }
 
-#ifdef ENABLE_REWRITE
 static int
 rwm_conn_init( BackendDB *be, Connection *conn )
 {
@@ -359,7 +406,6 @@ rwm_conn_destroy( BackendDB *be, Connection *conn )
 
        return SLAP_CB_CONTINUE;
 }
-#endif /* ENABLE_REWRITE */
 
 static int
 rwm_op_bind( Operation *op, SlapReply *rs )
@@ -367,21 +413,16 @@ rwm_op_bind( Operation *op, SlapReply *rs )
        slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
        int                     rc;
 
-       rwm_op_cb *roc = rwm_callback_get( op, rs );
+       rwm_op_cb               *roc = rwm_callback_get( op );
 
-#ifdef ENABLE_REWRITE
        rc = rwm_op_dn_massage( op, rs, "bindDN", &roc->ros );
-#else /* ! ENABLE_REWRITE */
-       rc = 1;
-       rc = rwm_op_dn_massage( op, rs, &rc, &roc->ros );
-#endif /* ! ENABLE_REWRITE */
        if ( rc != LDAP_SUCCESS ) {
                op->o_bd->bd_info = (BackendInfo *)on->on_info;
                send_ldap_error( op, rs, rc, "bindDN massage error" );
                return -1;
        }
 
-       op->o_callback = &roc->cb;
+       overlay_callback_after_backover( op, &roc->cb, 1 );
 
        return SLAP_CB_CONTINUE;
 }
@@ -393,9 +434,7 @@ rwm_op_unbind( Operation *op, SlapReply *rs )
        struct ldaprwmap        *rwmap = 
                        (struct ldaprwmap *)on->on_bi.bi_private;
 
-#ifdef ENABLE_REWRITE
        rewrite_session_delete( rwmap->rwm_rw, op->o_conn );
-#endif /* ENABLE_REWRITE */
 
        return SLAP_CB_CONTINUE;
 }
@@ -408,16 +447,11 @@ rwm_op_compare( Operation *op, SlapReply *rs )
                        (struct ldaprwmap *)on->on_bi.bi_private;
 
        int                     rc;
-       struct berval mapped_vals[2] = { BER_BVNULL, BER_BVNULL };
+       struct berval           mapped_vals[2] = { BER_BVNULL, BER_BVNULL };
 
-       rwm_op_cb *roc = rwm_callback_get( op, rs );
+       rwm_op_cb               *roc = rwm_callback_get( op );
 
-#ifdef ENABLE_REWRITE
        rc = rwm_op_dn_massage( op, rs, "compareDN", &roc->ros );
-#else /* ! ENABLE_REWRITE */
-       rc = 1;
-       rc = rwm_op_dn_massage( op, rs, &rc, &roc->ros );
-#endif /* ! ENABLE_REWRITE */
        if ( rc != LDAP_SUCCESS ) {
                op->o_bd->bd_info = (BackendInfo *)on->on_info;
                send_ldap_error( op, rs, rc, "compareDN massage error" );
@@ -469,12 +503,7 @@ rwm_op_compare( Operation *op, SlapReply *rs )
 
                        mapped_vals[0] = op->orc_ava->aa_value;
 
-#ifdef ENABLE_REWRITE
                        rc = rwm_dnattr_rewrite( op, rs, "compareAttrDN", NULL, mapped_valsp );
-#else /* ! ENABLE_REWRITE */
-                       rc = 1;
-                       rc = rwm_dnattr_rewrite( op, rs, &rc, NULL, mapped_valsp );
-#endif /* ! ENABLE_REWRITE */
 
                        if ( rc != LDAP_SUCCESS ) {
                                op->o_bd->bd_info = (BackendInfo *)on->on_info;
@@ -505,14 +534,9 @@ rwm_op_delete( Operation *op, SlapReply *rs )
        slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
        int                     rc;
 
-       rwm_op_cb *roc = rwm_callback_get( op, rs );
+       rwm_op_cb               *roc = rwm_callback_get( op );
 
-#ifdef ENABLE_REWRITE
        rc = rwm_op_dn_massage( op, rs, "deleteDN", &roc->ros );
-#else /* ! ENABLE_REWRITE */
-       rc = 1;
-       rc = rwm_op_dn_massage( op, rs, &rc, &roc->ros );
-#endif /* ! ENABLE_REWRITE */
        if ( rc != LDAP_SUCCESS ) {
                op->o_bd->bd_info = (BackendInfo *)on->on_info;
                send_ldap_error( op, rs, rc, "deleteDN massage error" );
@@ -535,14 +559,9 @@ rwm_op_modify( Operation *op, SlapReply *rs )
        Modifications           **mlp;
        int                     rc;
 
-       rwm_op_cb *roc = rwm_callback_get( op, rs );
+       rwm_op_cb               *roc = rwm_callback_get( op );
 
-#ifdef ENABLE_REWRITE
        rc = rwm_op_dn_massage( op, rs, "modifyDN", &roc->ros );
-#else /* ! ENABLE_REWRITE */
-       rc = 1;
-       rc = rwm_op_dn_massage( op, rs, &rc, &roc->ros );
-#endif /* ! ENABLE_REWRITE */
        if ( rc != LDAP_SUCCESS ) {
                op->o_bd->bd_info = (BackendInfo *)on->on_info;
                send_ldap_error( op, rs, rc, "modifyDN massage error" );
@@ -550,16 +569,12 @@ rwm_op_modify( Operation *op, SlapReply *rs )
        }
 
        isupdate = be_shadow_update( op );
-       for ( mlp = &op->oq_modify.rs_modlist; *mlp; ) {
+       for ( mlp = &op->orm_modlist; *mlp; ) {
                int                     is_oc = 0;
-               Modifications           *ml;
+               Modifications           *ml = *mlp;
                struct ldapmapping      *mapping = NULL;
 
-               /* duplicate the modlist */
-               ml = ch_malloc( sizeof( Modifications ));
-               *ml = **mlp;
-               *mlp = ml;
-
+               /* ml points to a temporary mod until needs duplication */
                if ( ml->sml_desc == slap_schema.si_ad_objectClass 
                                || ml->sml_desc == slap_schema.si_ad_structuralObjectClass )
                {
@@ -567,6 +582,15 @@ rwm_op_modify( Operation *op, SlapReply *rs )
 
                } else if ( !isupdate && !get_relax( op ) && ml->sml_desc->ad_type->sat_no_user_mod  )
                {
+                       ml = ch_malloc( sizeof( Modifications ) );
+                       *ml = **mlp;
+                       if ( (*mlp)->sml_values ) {
+                               ber_bvarray_dup_x( &ml->sml_values, (*mlp)->sml_values, NULL );
+                               if ( (*mlp)->sml_nvalues ) {
+                                       ber_bvarray_dup_x( &ml->sml_nvalues, (*mlp)->sml_nvalues, NULL );
+                               }
+                       }
+                       *mlp = ml;
                        goto next_mod;
 
                } else {
@@ -577,10 +601,15 @@ rwm_op_modify( Operation *op, SlapReply *rs )
                                        &mapping, RWM_MAP );
                        if ( drop_missing || ( mapping != NULL && BER_BVISNULL( &mapping->m_dst ) ) )
                        {
-                               goto cleanup_mod;
+                               goto skip_mod;
                        }
                }
 
+               /* duplicate the modlist */
+               ml = ch_malloc( sizeof( Modifications ));
+               *ml = **mlp;
+               *mlp = ml;
+
                if ( ml->sml_values != NULL ) {
                        int i, num;
                        struct berval *bva;
@@ -637,29 +666,15 @@ rwm_op_modify( Operation *op, SlapReply *rs )
                                if ( ml->sml_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
                                                || ( mapping != NULL && mapping->m_dst_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
                                {
-#ifdef ENABLE_REWRITE
                                        rc = rwm_dnattr_rewrite( op, rs, "modifyAttrDN",
                                                        ml->sml_values,
                                                        ml->sml_nvalues ? &ml->sml_nvalues : NULL );
-#else /* ! ENABLE_REWRITE */
-                                       rc = 1;
-                                       rc = rwm_dnattr_rewrite( op, rs, &rc, 
-                                                       ml->sml_values,
-                                                       ml->sml_nvalues ? &ml->sml_nvalues : NULL );
-#endif /* ! ENABLE_REWRITE */
 
                                } else if ( ml->sml_desc == slap_schema.si_ad_ref ) {
-#ifdef ENABLE_REWRITE
                                        rc = rwm_referral_rewrite( op, rs,
                                                        "referralAttrDN",
                                                        ml->sml_values,
                                                        ml->sml_nvalues ? &ml->sml_nvalues : NULL );
-#else /* ! ENABLE_REWRITE */
-                                       rc = 1;
-                                       rc = rwm_referral_rewrite( op, rs, &rc,
-                                                       ml->sml_values,
-                                                       ml->sml_nvalues ? &ml->sml_nvalues : NULL );
-#endif /* ! ENABLE_REWRITE */
                                        if ( rc != LDAP_SUCCESS ) {
                                                goto cleanup_mod;
                                        }
@@ -681,6 +696,10 @@ next_mod:;
                mlp = &ml->sml_next;
                continue;
 
+skip_mod:;
+               *mlp = (*mlp)->sml_next;
+               continue;
+
 cleanup_mod:;
                ml = *mlp;
                *mlp = (*mlp)->sml_next;
@@ -701,11 +720,11 @@ rwm_op_modrdn( Operation *op, SlapReply *rs )
                        (struct ldaprwmap *)on->on_bi.bi_private;
        
        int                     rc;
+       dncookie                dc;
 
-       rwm_op_cb *roc = rwm_callback_get( op, rs );
+       rwm_op_cb               *roc = rwm_callback_get( op );
 
        if ( op->orr_newSup ) {
-               dncookie        dc;
                struct berval   nnewSup = BER_BVNULL;
                struct berval   newSup = BER_BVNULL;
 
@@ -713,14 +732,9 @@ rwm_op_modrdn( Operation *op, SlapReply *rs )
                 * Rewrite the new superior, if defined and required
                 */
                dc.rwmap = rwmap;
-#ifdef ENABLE_REWRITE
                dc.conn = op->o_conn;
                dc.rs = rs;
                dc.ctx = "newSuperiorDN";
-#else /* ! ENABLE_REWRITE */
-               dc.tofrom = 0;
-               dc.normalized = 0;
-#endif /* ! ENABLE_REWRITE */
                newSup = *op->orr_newSup;
                nnewSup = *op->orr_nnewSup;
                rc = rwm_dn_massage_pretty_normalize( &dc, op->orr_newSup, &newSup, &nnewSup );
@@ -740,18 +754,48 @@ rwm_op_modrdn( Operation *op, SlapReply *rs )
                }
        }
 
+       /*
+        * Rewrite the newRDN, if needed
+        */
+       {
+               struct berval   newrdn = BER_BVNULL;
+               struct berval   nnewrdn = BER_BVNULL;
+
+               dc.rwmap = rwmap;
+               dc.conn = op->o_conn;
+               dc.rs = rs;
+               dc.ctx = "newRDN";
+               newrdn = op->orr_newrdn;
+               nnewrdn = op->orr_nnewrdn;
+               rc = rwm_dn_massage_pretty_normalize( &dc, &op->orr_newrdn, &newrdn, &nnewrdn );
+               if ( rc != LDAP_SUCCESS ) {
+                       op->o_bd->bd_info = (BackendInfo *)on->on_info;
+                       send_ldap_error( op, rs, rc, "newRDN massage error" );
+                       goto err;
+               }
+
+               if ( op->orr_newrdn.bv_val != newrdn.bv_val ) {
+                       op->orr_newrdn = newrdn;
+                       op->orr_nnewrdn = nnewrdn;
+               }
+       }
+
        /*
         * Rewrite the dn, if needed
         */
-#ifdef ENABLE_REWRITE
        rc = rwm_op_dn_massage( op, rs, "renameDN", &roc->ros );
-#else /* ! ENABLE_REWRITE */
-       rc = 1;
-       rc = rwm_op_dn_massage( op, rs, &rc, &roc->ros );
-#endif /* ! ENABLE_REWRITE */
        if ( rc != LDAP_SUCCESS ) {
                op->o_bd->bd_info = (BackendInfo *)on->on_info;
                send_ldap_error( op, rs, rc, "renameDN massage error" );
+               goto err;
+       }
+
+       op->o_callback = &roc->cb;
+
+       rc = SLAP_CB_CONTINUE;
+
+       if ( 0 ) {
+err:;
                if ( op->orr_newSup != roc->ros.orr_newSup ) {
                        ch_free( op->orr_newSup->bv_val );
                        ch_free( op->orr_nnewSup->bv_val );
@@ -760,15 +804,16 @@ rwm_op_modrdn( Operation *op, SlapReply *rs )
                        op->orr_newSup = roc->ros.orr_newSup;
                        op->orr_nnewSup = roc->ros.orr_nnewSup;
                }
-               return -1;
-       }
-
-       /* TODO: rewrite newRDN, attribute types, 
-        * values of DN-valued attributes ... */
 
-       op->o_callback = &roc->cb;
+               if ( op->orr_newrdn.bv_val != roc->ros.orr_newrdn.bv_val ) {
+                       ch_free( op->orr_newrdn.bv_val );
+                       ch_free( op->orr_nnewrdn.bv_val );
+                       op->orr_newrdn = roc->ros.orr_newrdn;
+                       op->orr_nnewrdn = roc->ros.orr_nnewrdn;
+               }
+       }
 
-       return SLAP_CB_CONTINUE;
+       return rc;
 }
 
 
@@ -779,10 +824,113 @@ rwm_swap_attrs( Operation *op, SlapReply *rs )
        rwm_op_state *ros = cb->sc_private;
 
        rs->sr_attrs = ros->ors_attrs;
+
+       /* other overlays might have touched op->ors_attrs, 
+        * so we restore the original version here, otherwise
+        * attribute-mapping might fail */
+       op->ors_attrs = ros->mapped_attrs; 
        
        return SLAP_CB_CONTINUE;
 }
 
+/*
+ * NOTE: this implementation of get/release entry is probably far from
+ * optimal.  The rationale consists in intercepting the request directed
+ * to the underlying database, in order to rewrite/remap the request,
+ * perform it using the modified data, duplicate the resulting entry
+ * and finally free it when release is called.
+ * This implies that subsequent overlays are not called, as the request
+ * is directly shunted to the underlying database.
+ */
+static int
+rwm_entry_release_rw( Operation *op, Entry *e, int rw )
+{
+       slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
+
+       /* can't be ours */
+       if ( ((BackendInfo *)on->on_info->oi_orig)->bi_entry_get_rw == NULL ) {
+               return SLAP_CB_CONTINUE;
+       }
+
+       /* just free entry if (probably) ours */
+       if ( e->e_private == NULL && BER_BVISNULL( &e->e_bv ) ) {
+               entry_free( e );
+               return LDAP_SUCCESS;
+       }
+
+       return SLAP_CB_CONTINUE;
+}
+
+static int
+rwm_entry_get_rw( Operation *op, struct berval *ndn,
+       ObjectClass *oc, AttributeDescription *at, int rw, Entry **ep )
+{
+       slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
+       int                     rc;
+       BackendDB               db;
+       Operation               op2;
+       SlapReply               rs = { REP_SEARCH };
+
+       rwm_op_state            ros = { 0 };
+       struct berval           mndn = BER_BVNULL;
+
+       if ( ((BackendInfo *)on->on_info->oi_orig)->bi_entry_get_rw == NULL ) {
+               return SLAP_CB_CONTINUE;
+       }
+
+       /* massage DN */
+       op2.o_tag = LDAP_REQ_SEARCH;
+       op2 = *op;
+       op2.o_req_dn = *ndn;
+       op2.o_req_ndn = *ndn;
+       rc = rwm_op_dn_massage( &op2, &rs, "searchDN", &ros );
+       if ( rc != LDAP_SUCCESS ) {
+               return LDAP_OTHER;
+       }
+
+       mndn = BER_BVISNULL( &ros.r_ndn ) ? *ndn : ros.r_ndn;
+
+       /* map attribute & objectClass */
+       if ( at != NULL ) {
+       }
+
+       if ( oc != NULL ) {
+       }
+
+       /* fetch entry */
+       db = *op->o_bd;
+       op2.o_bd = &db;
+       op2.o_bd->bd_info = (BackendInfo *)on->on_info->oi_orig;
+       op2.ors_attrs = slap_anlist_all_attributes;
+       rc = op2.o_bd->bd_info->bi_entry_get_rw( &op2, &mndn, oc, at, rw, ep );
+       if ( rc == LDAP_SUCCESS && *ep != NULL ) {
+               /* we assume be_entry_release() needs to be called */
+               rs.sr_flags = REP_ENTRY_MUSTRELEASE;
+               rs.sr_entry = *ep;
+
+               /* duplicate & release */
+               op2.o_bd->bd_info = (BackendInfo *)on;
+               rc = rwm_send_entry( &op2, &rs );
+               RS_ASSERT( rs.sr_flags & REP_ENTRY_MUSTFLUSH );
+               if ( rc == SLAP_CB_CONTINUE ) {
+                       *ep = rs.sr_entry;
+                       rc = LDAP_SUCCESS;
+               } else {
+                       assert( rc != LDAP_SUCCESS && rs.sr_entry == *ep );
+                       *ep = NULL;
+                       op2.o_bd->bd_info = (BackendInfo *)on->on_info;
+                       be_entry_release_r( &op2, rs.sr_entry );
+                       op2.o_bd->bd_info = (BackendInfo *)on;
+               }
+       }
+
+       if ( !BER_BVISNULL( &ros.r_ndn) && ros.r_ndn.bv_val != ndn->bv_val ) {
+               op->o_tmpfree( ros.r_ndn.bv_val, op->o_tmpmemctx );
+       }
+
+       return rc;
+}
+
 static int
 rwm_op_search( Operation *op, SlapReply *rs )
 {
@@ -800,17 +948,12 @@ rwm_op_search( Operation *op, SlapReply *rs )
 
        char                    *text = NULL;
 
-       rwm_op_cb *roc = rwm_callback_get( op, rs );
+       rwm_op_cb               *roc = rwm_callback_get( op );
 
-#ifdef ENABLE_REWRITE
        rc = rewrite_session_var_set( rwmap->rwm_rw, op->o_conn,
                "searchFilter", op->ors_filterstr.bv_val );
        if ( rc == LDAP_SUCCESS )
                rc = rwm_op_dn_massage( op, rs, "searchDN", &roc->ros );
-#else /* ! ENABLE_REWRITE */
-       rc = 1;
-       rc = rwm_op_dn_massage( op, rs, &rc, &roc->ros );
-#endif /* ! ENABLE_REWRITE */
        if ( rc != LDAP_SUCCESS ) {
                text = "searchDN massage error";
                goto error_return;
@@ -820,14 +963,9 @@ rwm_op_search( Operation *op, SlapReply *rs )
         * Rewrite the dn if needed
         */
        dc.rwmap = rwmap;
-#ifdef ENABLE_REWRITE
        dc.conn = op->o_conn;
        dc.rs = rs;
        dc.ctx = "searchFilterAttrDN";
-#else /* ! ENABLE_REWRITE */
-       dc.tofrom = 0;
-       dc.normalized = 0;
-#endif /* ! ENABLE_REWRITE */
 
        rc = rwm_filter_map_rewrite( op, &dc, op->ors_filter, &fstr );
        if ( rc != LDAP_SUCCESS ) {
@@ -845,7 +983,7 @@ rwm_op_search( Operation *op, SlapReply *rs )
        op->ors_filter = f;
        op->ors_filterstr = fstr;
 
-       rc = rwm_map_attrnames( &rwmap->rwm_at, &rwmap->rwm_oc,
+       rc = rwm_map_attrnames( op, &rwmap->rwm_at, &rwmap->rwm_oc,
                        op->ors_attrs, &an, RWM_MAP );
        if ( rc != LDAP_SUCCESS ) {
                text = "attribute list mapping error";
@@ -853,6 +991,9 @@ rwm_op_search( Operation *op, SlapReply *rs )
        }
 
        op->ors_attrs = an;
+       /* store the mapped Attributes for later usage, in
+        * the case that other overlays change op->ors_attrs */
+       roc->ros.mapped_attrs = an;
        roc->cb.sc_response = rwm_swap_attrs;
 
        op->o_callback = &roc->cb;
@@ -865,14 +1006,16 @@ error_return:;
        }
 
        if ( f != NULL ) {
-               filter_free_x( op, f );
+               filter_free_x( op, f, 1 );
        }
 
        if ( !BER_BVISNULL( &fstr ) ) {
-               ch_free( fstr.bv_val );
+               op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
        }
 
+       rwm_op_rollback( op, rs, &roc->ros );
        op->oq_search = roc->ros.oq_search;
+       op->o_tmpfree( roc, op->o_tmpmemctx );
 
        op->o_bd->bd_info = (BackendInfo *)on->on_info;
        send_ldap_error( op, rs, rc, text );
@@ -909,8 +1052,11 @@ rwm_exop_passwd( Operation *op, SlapReply *rs )
        }
 
        if ( !BER_BVISNULL( &id ) ) {
+               char idNul = id.bv_val[id.bv_len];
+               id.bv_val[id.bv_len] = '\0';
                rs->sr_err = dnPrettyNormal( NULL, &id, &op->o_req_dn,
                                &op->o_req_ndn, op->o_tmpmemctx );
+               id.bv_val[id.bv_len] = idNul;
                if ( rs->sr_err != LDAP_SUCCESS ) {
                        rs->sr_text = "Invalid DN";
                        return rs->sr_err;
@@ -921,14 +1067,9 @@ rwm_exop_passwd( Operation *op, SlapReply *rs )
                ber_dupbv_x( &op->o_req_ndn, &op->o_ndn, op->o_tmpmemctx );
        }
 
-       roc = rwm_callback_get( op, rs );
+       roc = rwm_callback_get( op );
 
-#ifdef ENABLE_REWRITE
        rc = rwm_op_dn_massage( op, rs, "extendedDN", &roc->ros );
-#else /* ! ENABLE_REWRITE */
-       rc = 1;
-       rc = rwm_op_dn_massage( op, rs, &rc, &roc->ros );
-#endif /* ! ENABLE_REWRITE */
        if ( rc != LDAP_SUCCESS ) {
                op->o_bd->bd_info = (BackendInfo *)on->on_info;
                send_ldap_error( op, rs, rc, "extendedDN massage error" );
@@ -998,14 +1139,9 @@ rwm_extended( Operation *op, SlapReply *rs )
                }
        }
 
-       roc = rwm_callback_get( op, rs );
+       roc = rwm_callback_get( op );
 
-#ifdef ENABLE_REWRITE
        rc = rwm_op_dn_massage( op, rs, "extendedDN", &roc->ros );
-#else /* ! ENABLE_REWRITE */
-       rc = 1;
-       rc = rwm_op_dn_massage( op, rs, &rc, &roc->ros );
-#endif /* ! ENABLE_REWRITE */
        if ( rc != LDAP_SUCCESS ) {
                op->o_bd->bd_info = (BackendInfo *)on->on_info;
                send_ldap_error( op, rs, rc, "extendedDN massage error" );
@@ -1018,7 +1154,7 @@ rwm_extended( Operation *op, SlapReply *rs )
        return SLAP_CB_CONTINUE;
 }
 
-static int
+static void
 rwm_matched( Operation *op, SlapReply *rs )
 {
        slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
@@ -1030,28 +1166,21 @@ rwm_matched( Operation *op, SlapReply *rs )
        int                     rc;
 
        if ( rs->sr_matched == NULL ) {
-               return SLAP_CB_CONTINUE;
+               return;
        }
 
        dc.rwmap = rwmap;
-#ifdef ENABLE_REWRITE
        dc.conn = op->o_conn;
        dc.rs = rs;
        dc.ctx = "matchedDN";
-#else /* ! ENABLE_REWRITE */
-       dc.tofrom = 0;
-       dc.normalized = 0;
-#endif /* ! ENABLE_REWRITE */
        ber_str2bv( rs->sr_matched, 0, 0, &dn );
        mdn = dn;
        rc = rwm_dn_massage_pretty( &dc, &dn, &mdn );
        if ( rc != LDAP_SUCCESS ) {
                rs->sr_err = rc;
                rs->sr_text = "Rewrite error";
-               return 1;
-       }
 
-       if ( mdn.bv_val != dn.bv_val ) {
+       } else if ( mdn.bv_val != dn.bv_val ) {
                if ( rs->sr_flags & REP_MATCHED_MUSTBEFREED ) {
                        ch_free( (void *)rs->sr_matched );
 
@@ -1060,8 +1189,6 @@ rwm_matched( Operation *op, SlapReply *rs )
                }
                rs->sr_matched = mdn.bv_val;
        }
-       
-       return SLAP_CB_CONTINUE;
 }
 
 static int
@@ -1075,18 +1202,14 @@ rwm_attrs( Operation *op, SlapReply *rs, Attribute** a_first, int stripEntryDN )
        int                     rc;
        Attribute               **ap;
        int                     isupdate;
+       int                     check_duplicate_attrs = 0;
 
        /*
         * Rewrite the dn attrs, if needed
         */
        dc.rwmap = rwmap;
-#ifdef ENABLE_REWRITE
        dc.conn = op->o_conn;
        dc.rs = NULL; 
-#else /* ! ENABLE_REWRITE */
-       dc.tofrom = 0;
-       dc.normalized = 0;
-#endif /* ! ENABLE_REWRITE */
 
        /* FIXME: the entries are in the remote mapping form;
         * so we need to select those attributes we are willing
@@ -1104,31 +1227,80 @@ rwm_attrs( Operation *op, SlapReply *rs, Attribute** a_first, int stripEntryDN )
        for ( ap = a_first; *ap; ) {
                struct ldapmapping      *mapping = NULL;
                int                     drop_missing;
-               int                     last;
+               int                     last = -1;
                Attribute               *a;
 
-               if ( SLAP_OPATTRS( rs->sr_attr_flags ) && is_at_operational( (*ap)->a_desc->ad_type ) )
+               if ( ( rwmap->rwm_flags & RWM_F_DROP_UNREQUESTED_ATTRS ) &&
+                               op->ors_attrs != NULL && 
+                               !SLAP_USERATTRS( rs->sr_attr_flags ) &&
+                               !ad_inlist( (*ap)->a_desc, op->ors_attrs ) )
                {
-                       /* go on */ ;
-                       
-               } else {
-                       if ( op->ors_attrs != NULL && 
-                                       !SLAP_USERATTRS( rs->sr_attr_flags ) &&
-                                       !ad_inlist( (*ap)->a_desc, op->ors_attrs ) )
-                       {
-                               goto cleanup_attr;
-                       }
+                       goto cleanup_attr;
+               }
 
-                       drop_missing = rwm_mapping( &rwmap->rwm_at,
-                                       &(*ap)->a_desc->ad_cname, &mapping, RWM_REMAP );
-                       if ( drop_missing || ( mapping != NULL && BER_BVISEMPTY( &mapping->m_dst ) ) )
+               drop_missing = rwm_mapping( &rwmap->rwm_at,
+                               &(*ap)->a_desc->ad_cname, &mapping, RWM_REMAP );
+               if ( drop_missing || ( mapping != NULL && BER_BVISEMPTY( &mapping->m_dst ) ) )
+               {
+                       goto cleanup_attr;
+               }
+               if ( mapping != NULL ) {
+                       assert( mapping->m_dst_ad != NULL );
+
+                       /* try to normalize mapped Attributes if the original 
+                        * AttributeType was not normalized */
+                       if ( (!(*ap)->a_desc->ad_type->sat_equality || 
+                               !(*ap)->a_desc->ad_type->sat_equality->smr_normalize) &&
+                               mapping->m_dst_ad->ad_type->sat_equality &&
+                               mapping->m_dst_ad->ad_type->sat_equality->smr_normalize )
                        {
-                               goto cleanup_attr;
-                       }
+                               if ((rwmap->rwm_flags & RWM_F_NORMALIZE_MAPPED_ATTRS))
+                               {
+                                       int i = 0;
+
+                                       last = (*ap)->a_numvals;
+                                       if ( last )
+                                       {
+                                               (*ap)->a_nvals = ch_malloc( (last+1) * sizeof(struct berval) );
+
+                                               for ( i = 0; !BER_BVISNULL( &(*ap)->a_vals[i]); i++ ) {
+                                                       int             rc;
+                                                       /*
+                                                        * check that each value is valid per syntax
+                                                        * and pretty if appropriate
+                                                        */
+                                                       rc = mapping->m_dst_ad->ad_type->sat_equality->smr_normalize(
+                                                               SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
+                                                               mapping->m_dst_ad->ad_type->sat_syntax,
+                                                               mapping->m_dst_ad->ad_type->sat_equality,
+                                                               &(*ap)->a_vals[i], &(*ap)->a_nvals[i],
+                                                               NULL );
+
+                                                       if ( rc != LDAP_SUCCESS ) {
+                                                               /* FIXME: this is wrong, putting a non-normalized value
+                                                                * into nvals. But when a proxy sends us bogus data,
+                                                                * we still need to give it to the client, even if it
+                                                                * violates the syntax. I.e., we don't want to silently
+                                                                * drop things and trigger an apparent data loss.
+                                                                */
+                                                               ber_dupbv( &(*ap)->a_nvals[i], &(*ap)->a_vals[i] );
+                                                       }
+                                               }
+                                               BER_BVZERO( &(*ap)->a_nvals[i] );
+                                       }
 
-                       if ( mapping != NULL ) {
-                               (*ap)->a_desc = mapping->m_dst_ad;
+                               } else {
+                                       assert( (*ap)->a_nvals == (*ap)->a_vals );
+                                       (*ap)->a_nvals = NULL;
+                                       ber_bvarray_dup_x( &(*ap)->a_nvals, (*ap)->a_vals, NULL );
+                               }
                        }
+
+                       /* rewrite the attribute description */
+                       (*ap)->a_desc = mapping->m_dst_ad;
+
+                       /* will need to check for duplicate attrs */
+                       check_duplicate_attrs++;
                }
 
                if ( (*ap)->a_desc == slap_schema.si_ad_entryDN ) {
@@ -1145,8 +1317,9 @@ rwm_attrs( Operation *op, SlapReply *rs, Attribute** a_first, int stripEntryDN )
                        goto next_attr;
                }
 
-               for ( last = 0; !BER_BVISNULL( &(*ap)->a_vals[last] ); last++ )
-                       /* just count */ ;
+               if ( last == -1 ) { /* not yet counted */ 
+                       last = (*ap)->a_numvals;
+               }
 
                if ( last == 0 ) {
                        /* empty? leave it in place because of attrsonly and vlv */
@@ -1164,6 +1337,7 @@ rwm_attrs( Operation *op, SlapReply *rs, Attribute** a_first, int stripEntryDN )
 
                                rwm_map( &rwmap->rwm_oc, &bv[0], &mapped, RWM_REMAP );
                                if ( BER_BVISNULL( &mapped ) || BER_BVISEMPTY( &mapped ) ) {
+remove_oc:;
                                        ch_free( bv[0].bv_val );
                                        BER_BVZERO( &bv[0] );
                                        if ( &(*ap)->a_vals[last] > &bv[0] ) {
@@ -1173,13 +1347,35 @@ rwm_attrs( Operation *op, SlapReply *rs, Attribute** a_first, int stripEntryDN )
                                        last--;
                                        bv--;
 
-                               } else if ( mapped.bv_val != bv[0].bv_val ) {
+                               } else if ( mapped.bv_val != bv[0].bv_val
+                                       && ber_bvstrcasecmp( &mapped, &bv[0] ) != 0 )
+                               {
+                                       int     i;
+
+                                       for ( i = 0; !BER_BVISNULL( &(*ap)->a_vals[ i ] ); i++ ) {
+                                               if ( &(*ap)->a_vals[ i ] == bv ) {
+                                                       continue;
+                                               }
+
+                                               if ( ber_bvstrcasecmp( &mapped, &(*ap)->a_vals[ i ] ) == 0 ) {
+                                                       break;
+                                               }
+                                       }
+
+                                       if ( !BER_BVISNULL( &(*ap)->a_vals[ i ] ) ) {
+                                               goto remove_oc;
+                                       }
+
                                        /*
                                         * FIXME: after LBER_FREEing
                                         * the value is replaced by
                                         * ch_alloc'ed memory
                                         */
                                        ber_bvreplace( &bv[0], &mapped );
+
+                                       /* FIXME: will need to check
+                                        * if the structuralObjectClass
+                                        * changed */
                                }
                        }
 
@@ -1198,29 +1394,20 @@ rwm_attrs( Operation *op, SlapReply *rs, Attribute** a_first, int stripEntryDN )
                } else if ( (*ap)->a_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
                                || ( mapping != NULL && mapping->m_src_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
                {
-#ifdef ENABLE_REWRITE
                        dc.ctx = "searchAttrDN";
-#endif /* ENABLE_REWRITE */
-                       rc = rwm_dnattr_result_rewrite( &dc, (*ap)->a_vals );
+                       rc = rwm_dnattr_result_rewrite( &dc, (*ap)->a_vals, (*ap)->a_nvals );
                        if ( rc != LDAP_SUCCESS ) {
                                goto cleanup_attr;
                        }
 
                } else if ( (*ap)->a_desc == slap_schema.si_ad_ref ) {
-#ifdef ENABLE_REWRITE
                        dc.ctx = "searchAttrDN";
-#endif /* ENABLE_REWRITE */
                        rc = rwm_referral_result_rewrite( &dc, (*ap)->a_vals );
                        if ( rc != LDAP_SUCCESS ) {
                                goto cleanup_attr;
                        }
                }
 
-               if ( mapping != NULL ) {
-                       /* rewrite the attribute description */
-                       assert( mapping->m_dst_ad != NULL );
-                       (*ap)->a_desc = mapping->m_dst_ad;
-               }
 
 next_attr:;
                ap = &(*ap)->a_next;
@@ -1233,9 +1420,52 @@ cleanup_attr:;
                attr_free( a );
        }
 
+       /* only check if some mapping occurred */
+       if ( check_duplicate_attrs ) {
+               for ( ap = a_first; *ap != NULL; ap = &(*ap)->a_next ) {
+                       Attribute       **tap;
+
+                       for ( tap = &(*ap)->a_next; *tap != NULL; ) {
+                               if ( (*tap)->a_desc == (*ap)->a_desc ) {
+                                       Entry           e = { 0 };
+                                       Modification    mod = { 0 };
+                                       const char      *text = NULL;
+                                       char            textbuf[ SLAP_TEXT_BUFLEN ];
+                                       Attribute       *next = (*tap)->a_next;
+
+                                       BER_BVSTR( &e.e_name, "" );
+                                       BER_BVSTR( &e.e_nname, "" );
+                                       e.e_attrs = *ap;
+                                       mod.sm_op = LDAP_MOD_ADD;
+                                       mod.sm_desc = (*ap)->a_desc;
+                                       mod.sm_type = mod.sm_desc->ad_cname;
+                                       mod.sm_numvals = (*tap)->a_numvals;
+                                       mod.sm_values = (*tap)->a_vals;
+                                       if ( (*tap)->a_nvals != (*tap)->a_vals ) {
+                                               mod.sm_nvalues = (*tap)->a_nvals;
+                                       }
+
+                                       (void)modify_add_values( &e, &mod,
+                                               /* permissive */ 1,
+                                               &text, textbuf, sizeof( textbuf ) );
+
+                                       /* should not insert new attrs! */
+                                       assert( e.e_attrs == *ap );
+
+                                       attr_free( *tap );
+                                       *tap = next;
+
+                               } else {
+                                       tap = &(*tap)->a_next;
+                               }
+                       }
+               }
+       }
+
        return 0;
 }
 
+/* Should return SLAP_CB_CONTINUE or failure, never LDAP_SUCCESS. */
 static int
 rwm_send_entry( Operation *op, SlapReply *rs )
 {
@@ -1244,7 +1474,6 @@ rwm_send_entry( Operation *op, SlapReply *rs )
                        (struct ldaprwmap *)on->on_bi.bi_private;
 
        Entry                   *e = NULL;
-       slap_mask_t             flags;
        struct berval           dn = BER_BVNULL,
                                ndn = BER_BVNULL;
        dncookie                dc;
@@ -1256,17 +1485,11 @@ rwm_send_entry( Operation *op, SlapReply *rs )
         * Rewrite the dn of the result, if needed
         */
        dc.rwmap = rwmap;
-#ifdef ENABLE_REWRITE
        dc.conn = op->o_conn;
        dc.rs = NULL; 
        dc.ctx = "searchEntryDN";
-#else /* ! ENABLE_REWRITE */
-       dc.tofrom = 0;
-       dc.normalized = 0;
-#endif /* ! ENABLE_REWRITE */
 
        e = rs->sr_entry;
-       flags = rs->sr_flags;
        if ( !( rs->sr_flags & REP_ENTRY_MODIFIABLE ) ) {
                /* FIXME: all we need to duplicate are:
                 * - dn
@@ -1274,15 +1497,17 @@ rwm_send_entry( Operation *op, SlapReply *rs )
                 * - attributes that are requested
                 * - no values if attrsonly is set
                 */
-
                e = entry_dup( e );
                if ( e == NULL ) {
                        rc = LDAP_NO_MEMORY;
                        goto fail;
                }
-
-               flags &= ~REP_ENTRY_MUSTRELEASE;
-               flags |= ( REP_ENTRY_MODIFIABLE | REP_ENTRY_MUSTBEFREED );
+       } else if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
+               /* ITS#6423: REP_ENTRY_MUSTRELEASE incompatible
+                * with REP_ENTRY_MODIFIABLE */
+               RS_ASSERT( 0 );
+               rc = 1;
+               goto fail;
        }
 
        /*
@@ -1314,13 +1539,21 @@ rwm_send_entry( Operation *op, SlapReply *rs )
         * to return, and remap them accordingly */
        (void)rwm_attrs( op, rs, &e->e_attrs, 1 );
 
-       if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
-               be_entry_release_rw( op, rs->sr_entry, 0 );
+       if ( e != rs->sr_entry ) {
+               /* Reimplementing rs_replace_entry(), I suppose to
+                * bypass our own dubious rwm_entry_release_rw() */
+               if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
+                       rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
+                       op->o_bd->bd_info = (BackendInfo *)on->on_info;
+                       be_entry_release_r( op, rs->sr_entry );
+                       op->o_bd->bd_info = (BackendInfo *)on;
+               } else if ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) {
+                       entry_free( rs->sr_entry );
+               }
+               rs->sr_entry = e;
+               rs->sr_flags |= REP_ENTRY_MODIFIABLE | REP_ENTRY_MUSTBEFREED;
        }
 
-       rs->sr_entry = e;
-       rs->sr_flags = flags;
-
        return SLAP_CB_CONTINUE;
 
 fail:;
@@ -1370,12 +1603,7 @@ rwm_chk_referrals( Operation *op, SlapReply *rs )
        slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
        int                     rc;
 
-#ifdef ENABLE_REWRITE
        rc = rwm_op_dn_massage( op, rs, "referralCheckDN" );
-#else /* ! ENABLE_REWRITE */
-       rc = 1;
-       rc = rwm_op_dn_massage( op, rs, &rc );
-#endif /* ! ENABLE_REWRITE */
        if ( rc != LDAP_SUCCESS ) {
                op->o_bd->bd_info = (BackendInfo *)on->on_info;
                send_ldap_error( op, rs, rc, "referralCheckDN massage error" );
@@ -1394,7 +1622,6 @@ rwm_rw_config(
        int             argc,
        char            **argv )
 {
-#ifdef ENABLE_REWRITE
        slap_overinst           *on = (slap_overinst *) be->bd_info;
        struct ldaprwmap        *rwmap = 
                        (struct ldaprwmap *)on->on_bi.bi_private;
@@ -1402,11 +1629,6 @@ rwm_rw_config(
        return rewrite_parse( rwmap->rwm_rw,
                                fname, lineno, argc, argv );
 
-#else /* !ENABLE_REWRITE */
-       fprintf( stderr, "%s: line %d: rewrite capabilities "
-                       "are not enabled\n", fname, lineno );
-#endif /* !ENABLE_REWRITE */
-               
        return 0;
 }
 
@@ -1424,9 +1646,7 @@ rwm_suffixmassage_config(
 
        struct berval           bvnc, nvnc, pvnc, brnc, nrnc, prnc;
        int                     massaged;
-#ifdef ENABLE_REWRITE
        int                     rc;
-#endif /* ENABLE_REWRITE */
                
        /*
         * syntax:
@@ -1440,12 +1660,12 @@ rwm_suffixmassage_config(
         */
        if ( argc == 2 ) {
                if ( be->be_suffix == NULL ) {
-                       fprintf( stderr, "%s: line %d: "
+                       Debug( LDAP_DEBUG_ANY, "%s: line %d: "
                                       " \"suffixMassage [<suffix>]"
                                       " <massaged suffix>\" without "
                                       "<suffix> part requires database "
                                       "suffix be defined first.\n",
-                               fname, lineno );
+                               fname, lineno, 0 );
                        return 1;
                }
                bvnc = be->be_suffix[ 0 ];
@@ -1456,29 +1676,28 @@ rwm_suffixmassage_config(
                massaged = 2;
 
        } else  {
-               fprintf( stderr, "%s: line %d: syntax is"
+               Debug( LDAP_DEBUG_ANY, "%s: line %d: syntax is"
                               " \"suffixMassage [<suffix>]"
                               " <massaged suffix>\"\n",
-                       fname, lineno );
+                       fname, lineno, 0 );
                return 1;
        }
 
        if ( dnPrettyNormal( NULL, &bvnc, &pvnc, &nvnc, NULL ) != LDAP_SUCCESS ) {
-               fprintf( stderr, "%s: line %d: suffix DN %s is invalid\n",
+               Debug( LDAP_DEBUG_ANY, "%s: line %d: suffix DN %s is invalid\n",
                        fname, lineno, bvnc.bv_val );
                return 1;
        }
 
        ber_str2bv( argv[ massaged ], 0, 0, &brnc );
        if ( dnPrettyNormal( NULL, &brnc, &prnc, &nrnc, NULL ) != LDAP_SUCCESS ) {
-               fprintf( stderr, "%s: line %d: suffix DN %s is invalid\n",
+               Debug( LDAP_DEBUG_ANY, "%s: line %d: suffix DN %s is invalid\n",
                                fname, lineno, brnc.bv_val );
                free( nvnc.bv_val );
                free( pvnc.bv_val );
                return 1;
        }
 
-#ifdef ENABLE_REWRITE
        /*
         * The suffix massaging is emulated 
         * by means of the rewrite capabilities
@@ -1490,17 +1709,7 @@ rwm_suffixmassage_config(
        free( nrnc.bv_val );
        free( prnc.bv_val );
 
-       return( rc );
-
-#else /* !ENABLE_REWRITE */
-       ber_bvarray_add( &rwmap->rwm_suffix_massage, &pvnc );
-       ber_bvarray_add( &rwmap->rwm_suffix_massage, &nvnc );
-               
-       ber_bvarray_add( &rwmap->rwm_suffix_massage, &prnc );
-       ber_bvarray_add( &rwmap->rwm_suffix_massage, &nrnc );
-#endif /* !ENABLE_REWRITE */
-
-       return 0;
+       return rc;
 }
 
 static int
@@ -1550,29 +1759,22 @@ rwm_response( Operation *op, SlapReply *rs )
                         * Rewrite the dn of the referrals, if needed
                         */
                        dc.rwmap = rwmap;
-#ifdef ENABLE_REWRITE
                        dc.conn = op->o_conn;
                        dc.rs = NULL; 
                        dc.ctx = "referralDN";
-#else /* ! ENABLE_REWRITE */
-                       dc.tofrom = 0;
-                       dc.normalized = 0;
-#endif /* ! ENABLE_REWRITE */
                        rc = rwm_referral_result_rewrite( &dc, rs->sr_ref );
+                       /* FIXME: impossible, so far */
                        if ( rc != LDAP_SUCCESS ) {
-                               rc = 1;
+                               rs->sr_err = rc;
                                break;
                        }
                }
-               rc = rwm_matched( op, rs );
-               break;
 
-       default:
-               rc = SLAP_CB_CONTINUE;
+               rwm_matched( op, rs );
                break;
        }
 
-       return rc;
+       return SLAP_CB_CONTINUE;
 }
 
 static int
@@ -1606,36 +1808,51 @@ rwm_db_config(
 
        } else if ( strcasecmp( argv[0], "t-f-support" ) == 0 ) {
                if ( argc != 2 ) {
-                       fprintf( stderr,
+                       Debug( LDAP_DEBUG_ANY,
                "%s: line %d: \"t-f-support {no|yes|discover}\" needs 1 argument.\n",
-                                       fname, lineno );
+                                       fname, lineno, 0 );
                        return( 1 );
                }
 
                if ( strcasecmp( argv[ 1 ], "no" ) == 0 ) {
-                       rwmap->rwm_flags &= ~(RWM_F_SUPPORT_T_F|RWM_F_SUPPORT_T_F_DISCOVER);
+                       rwmap->rwm_flags &= ~(RWM_F_SUPPORT_T_F_MASK2);
 
                } else if ( strcasecmp( argv[ 1 ], "yes" ) == 0 ) {
                        rwmap->rwm_flags |= RWM_F_SUPPORT_T_F;
 
                /* TODO: not implemented yet */
                } else if ( strcasecmp( argv[ 1 ], "discover" ) == 0 ) {
-                       fprintf( stderr,
+                       Debug( LDAP_DEBUG_ANY,
                "%s: line %d: \"discover\" not supported yet "
                "in \"t-f-support {no|yes|discover}\".\n",
-                                       fname, lineno );
+                                       fname, lineno, 0 );
                        return( 1 );
 #if 0
                        rwmap->rwm_flags |= RWM_F_SUPPORT_T_F_DISCOVER;
 #endif
 
                } else {
-                       fprintf( stderr,
+                       Debug( LDAP_DEBUG_ANY,
        "%s: line %d: unknown value \"%s\" for \"t-f-support {no|yes|discover}\".\n",
                                fname, lineno, argv[ 1 ] );
                        return 1;
                }
 
+       } else if ( strcasecmp( argv[0], "normalize-mapped-attrs" ) ==  0 ) {
+               if ( argc !=2 ) { 
+                       Debug( LDAP_DEBUG_ANY,
+               "%s: line %d: \"normalize-mapped-attrs {no|yes}\" needs 1 argument.\n",
+                                       fname, lineno, 0 );
+                       return( 1 );
+               }
+
+               if ( strcasecmp( argv[ 1 ], "no" ) == 0 ) {
+                       rwmap->rwm_flags &= ~(RWM_F_NORMALIZE_MAPPED_ATTRS);
+
+               } else if ( strcasecmp( argv[ 1 ], "yes" ) == 0 ) {
+                       rwmap->rwm_flags |= RWM_F_NORMALIZE_MAPPED_ATTRS;
+               }
+
        } else {
                rc = SLAP_CONF_UNKNOWN;
        }
@@ -1647,24 +1864,199 @@ rwm_db_config(
        return rc;
 }
 
-static int
-rwm_db_init(
-       BackendDB       *be )
-{
-       slap_overinst           *on = (slap_overinst *) be->bd_info;
-       struct ldaprwmap        *rwmap;
-#ifdef ENABLE_REWRITE
-       char                    *rargv[ 3 ];
-#endif /* ENABLE_REWRITE */
-       int                     rc = 0;
+/*
+ * dynamic configuration...
+ */
 
-       rwmap = (struct ldaprwmap *)ch_calloc( 1, sizeof( struct ldaprwmap ) );
+enum {
+       /* rewrite */
+       RWM_CF_REWRITE = 1,
 
-#ifdef ENABLE_REWRITE
-       rwmap->rwm_rw = rewrite_info_init( REWRITE_MODE_USE_DEFAULT );
-       if ( rwmap->rwm_rw == NULL ) {
-               rc = -1;
-               goto error_return;
+       /* map */
+       RWM_CF_MAP,
+       RWM_CF_T_F_SUPPORT,
+       RWM_CF_NORMALIZE_MAPPED,
+       RWM_CF_DROP_UNREQUESTED,
+
+       RWM_CF_LAST
+};
+
+static slap_verbmasks t_f_mode[] = {
+       { BER_BVC( "true" ),            RWM_F_SUPPORT_T_F },
+       { BER_BVC( "yes" ),             RWM_F_SUPPORT_T_F },
+       { BER_BVC( "discover" ),        RWM_F_SUPPORT_T_F_DISCOVER },
+       { BER_BVC( "false" ),           RWM_F_NONE },
+       { BER_BVC( "no" ),              RWM_F_NONE },
+       { BER_BVNULL,                   0 }
+};
+
+static ConfigDriver rwm_cf_gen;
+
+static ConfigTable rwmcfg[] = {
+       { "rwm-rewrite", "rewrite",
+               2, 0, STRLENOF("rwm-rewrite"),
+               ARG_MAGIC|RWM_CF_REWRITE, rwm_cf_gen,
+               "( OLcfgOvAt:16.1 NAME 'olcRwmRewrite' "
+                       "DESC 'Rewrites strings' "
+                       "EQUALITY caseIgnoreMatch "
+                       "SYNTAX OMsDirectoryString "
+                       "X-ORDERED 'VALUES' )",
+               NULL, NULL },
+
+       { "rwm-suffixmassage", "[virtual]> <real",
+               2, 3, 0, ARG_MAGIC|RWM_CF_REWRITE, rwm_cf_gen,
+               NULL, NULL, NULL },
+               
+       { "rwm-t-f-support", "true|false|discover",
+               2, 2, 0, ARG_MAGIC|RWM_CF_T_F_SUPPORT, rwm_cf_gen,
+               "( OLcfgOvAt:16.2 NAME 'olcRwmTFSupport' "
+                       "DESC 'Absolute filters support' "
+                       "SYNTAX OMsDirectoryString "
+                       "SINGLE-VALUE )",
+               NULL, NULL },
+
+       { "rwm-map", "{objectClass|attribute}",
+               2, 4, 0, ARG_MAGIC|RWM_CF_MAP, rwm_cf_gen,
+               "( OLcfgOvAt:16.3 NAME 'olcRwmMap' "
+                       "DESC 'maps attributes/objectClasses' "
+                       "EQUALITY caseIgnoreMatch "
+                       "SYNTAX OMsDirectoryString "
+                       "X-ORDERED 'VALUES' )",
+               NULL, NULL },
+
+       { "rwm-normalize-mapped-attrs", "true|false",
+               2, 2, 0, ARG_MAGIC|ARG_ON_OFF|RWM_CF_NORMALIZE_MAPPED, rwm_cf_gen,
+               "( OLcfgOvAt:16.4 NAME 'olcRwmNormalizeMapped' "
+                       "DESC 'Normalize mapped attributes/objectClasses' "
+                       "SYNTAX OMsBoolean "
+                       "SINGLE-VALUE )",
+               NULL, NULL },
+
+       { "rwm-drop-unrequested-attrs", "true|false",
+               2, 2, 0, ARG_MAGIC|ARG_ON_OFF|RWM_CF_DROP_UNREQUESTED, rwm_cf_gen,
+               "( OLcfgOvAt:16.5 NAME 'olcRwmDropUnrequested' "
+                       "DESC 'Drop unrequested attributes' "
+                       "SYNTAX OMsBoolean "
+                       "SINGLE-VALUE )",
+               NULL, NULL },
+
+       { NULL, NULL, 0, 0, 0, ARG_IGNORED }
+};
+
+static ConfigOCs rwmocs[] = {
+       { "( OLcfgOvOc:16.1 "
+               "NAME 'olcRwmConfig' "
+               "DESC 'Rewrite/remap configuration' "
+               "SUP olcOverlayConfig "
+               "MAY ( "
+                       "olcRwmRewrite $ "
+                       "olcRwmTFSupport $ "
+                       "olcRwmMap $ "
+                       "olcRwmNormalizeMapped "
+                       ") )",
+               Cft_Overlay, rwmcfg, NULL, NULL },
+       { NULL, 0, NULL }
+};
+
+static void
+slap_bv_x_ordered_unparse( BerVarray in, BerVarray *out )
+{
+       int             i;
+       BerVarray       bva = NULL;
+       char            ibuf[32], *ptr;
+       struct berval   idx;
+
+       assert( in != NULL );
+
+       for ( i = 0; !BER_BVISNULL( &in[i] ); i++ )
+               /* count'em */ ;
+
+       if ( i == 0 ) {
+               return;
+       }
+
+       idx.bv_val = ibuf;
+
+       bva = ch_malloc( ( i + 1 ) * sizeof(struct berval) );
+       BER_BVZERO( &bva[ 0 ] );
+
+       for ( i = 0; !BER_BVISNULL( &in[i] ); i++ ) {
+               idx.bv_len = snprintf( idx.bv_val, sizeof( ibuf ), "{%d}", i );
+               if ( idx.bv_len >= sizeof( ibuf ) ) {
+                       ber_bvarray_free( bva );
+                       return;
+               }
+
+               bva[i].bv_len = idx.bv_len + in[i].bv_len;
+               bva[i].bv_val = ch_malloc( bva[i].bv_len + 1 );
+               ptr = lutil_strcopy( bva[i].bv_val, ibuf );
+               ptr = lutil_strcopy( ptr, in[i].bv_val );
+               *ptr = '\0';
+               BER_BVZERO( &bva[ i + 1 ] );
+       }
+
+       *out = bva;
+}
+
+static int
+rwm_bva_add(
+       BerVarray               *bva,
+       int                     idx,
+       char                    **argv )
+{
+       char            *line;
+       struct berval   bv;
+
+       line = ldap_charray2str( argv, "\" \"" );
+       if ( line != NULL ) {
+               int     len = strlen( argv[ 0 ] );
+
+               ber_str2bv( line, 0, 0, &bv );
+               AC_MEMCPY( &bv.bv_val[ len ], &bv.bv_val[ len + 1 ],
+                       bv.bv_len - ( len + 1 ) );
+               bv.bv_val[ bv.bv_len - 1 ] = '"';
+
+               if ( idx == -1 ) {
+                       ber_bvarray_add( bva, &bv );
+
+               } else {
+                       (*bva)[ idx ] = bv;
+               }
+
+               return 0;
+       }
+
+       return -1;
+}
+
+static int
+rwm_bva_rewrite_add(
+       struct ldaprwmap        *rwmap,
+       int                     idx,
+       char                    **argv )
+{
+       return rwm_bva_add( &rwmap->rwm_bva_rewrite, idx, argv );
+}
+
+#ifdef unused
+static int
+rwm_bva_map_add(
+       struct ldaprwmap        *rwmap,
+       int                     idx,
+       char                    **argv )
+{
+       return rwm_bva_add( &rwmap->rwm_bva_map, idx, argv );
+}
+#endif /* unused */
+
+static int
+rwm_info_init( struct rewrite_info ** rwm_rw )
+{
+       char                    *rargv[ 3 ];
+
+       *rwm_rw = rewrite_info_init( REWRITE_MODE_USE_DEFAULT );
+       if ( *rwm_rw == NULL ) {
+               return -1;
        }
 
        /* this rewriteContext by default must be null;
@@ -1672,19 +2064,585 @@ rwm_db_init(
        rargv[ 0 ] = "rewriteContext";
        rargv[ 1 ] = "searchFilter";
        rargv[ 2 ] = NULL;
-       rewrite_parse( rwmap->rwm_rw, "<suffix massage>", 1, 2, rargv );
+       rewrite_parse( *rwm_rw, "<suffix massage>", 1, 2, rargv );
 
        rargv[ 0 ] = "rewriteContext";
        rargv[ 1 ] = "default";
        rargv[ 2 ] = NULL;
-       rewrite_parse( rwmap->rwm_rw, "<suffix massage>", 2, 2, rargv );
-#endif /* ENABLE_REWRITE */
+       rewrite_parse( *rwm_rw, "<suffix massage>", 2, 2, rargv );
+
+       return 0;
+}
+
+static int
+rwm_cf_gen( ConfigArgs *c )
+{
+       slap_overinst           *on = (slap_overinst *)c->bi;
+       struct ldaprwmap        *rwmap = 
+                       (struct ldaprwmap *)on->on_bi.bi_private;
+
+       BackendDB               db;
+       char                    *argv0;
+       int                     idx0 = 0;
+       int                     rc = 0;
+
+       db = *c->be;
+       db.bd_info = c->bi;
+
+       if ( c->op == SLAP_CONFIG_EMIT ) {
+               struct berval   bv = BER_BVNULL;
+
+               switch ( c->type ) {
+               case RWM_CF_REWRITE:
+                       if ( rwmap->rwm_bva_rewrite == NULL ) {
+                               rc = 1;
+
+                       } else {
+                               slap_bv_x_ordered_unparse( rwmap->rwm_bva_rewrite, &c->rvalue_vals );
+                               if ( !c->rvalue_vals ) {
+                                       rc = 1;
+                               }
+                       }
+                       break;
+
+               case RWM_CF_T_F_SUPPORT:
+                       enum_to_verb( t_f_mode, (rwmap->rwm_flags & RWM_F_SUPPORT_T_F_MASK2), &bv );
+                       if ( BER_BVISNULL( &bv ) ) {
+                               /* there's something wrong... */
+                               assert( 0 );
+                               rc = 1;
+
+                       } else {
+                               value_add_one( &c->rvalue_vals, &bv );
+                       }
+                       break;
+
+               case RWM_CF_MAP:
+                       if ( rwmap->rwm_bva_map == NULL ) {
+                               rc = 1;
+
+                       } else {
+                               slap_bv_x_ordered_unparse( rwmap->rwm_bva_map, &c->rvalue_vals );
+                               if ( !c->rvalue_vals ) {
+                                       rc = 1;
+                               }
+                       }
+                       break;
+
+               case RWM_CF_NORMALIZE_MAPPED:
+                       c->value_int = ( rwmap->rwm_flags & RWM_F_NORMALIZE_MAPPED_ATTRS );
+                       break;
+
+               case RWM_CF_DROP_UNREQUESTED:
+                       c->value_int = ( rwmap->rwm_flags & RWM_F_DROP_UNREQUESTED_ATTRS );
+                       break;
+
+               default:
+                       assert( 0 );
+                       rc = 1;
+               }
+
+               return rc;
+
+       } else if ( c->op == LDAP_MOD_DELETE ) {
+               switch ( c->type ) {
+               case RWM_CF_REWRITE:
+                       if ( c->valx >= 0 ) {
+                               int i;
+
+                               for ( i = 0; !BER_BVISNULL( &rwmap->rwm_bva_rewrite[ i ] ); i++ )
+                                       /* count'em */ ;
+
+                               if ( c->valx >= i ) {
+                                       rc = 1;
+                                       break;
+                               }
+
+                               ber_memfree( rwmap->rwm_bva_rewrite[ c->valx ].bv_val );
+                               for ( i = c->valx; !BER_BVISNULL( &rwmap->rwm_bva_rewrite[ i + 1 ] ); i++ )
+                               {
+                                       rwmap->rwm_bva_rewrite[ i ] = rwmap->rwm_bva_rewrite[ i + 1 ];
+                               }
+                               BER_BVZERO( &rwmap->rwm_bva_rewrite[ i ] );
+
+                               rewrite_info_delete( &rwmap->rwm_rw );
+                               assert( rwmap->rwm_rw == NULL );
+
+                               rc = rwm_info_init( &rwmap->rwm_rw );
+
+                               for ( i = 0; !BER_BVISNULL( &rwmap->rwm_bva_rewrite[ i ] ); i++ )
+                               {
+                                       ConfigArgs ca = { 0 };
+
+                                       ca.line = rwmap->rwm_bva_rewrite[ i ].bv_val;
+                                       ca.argc = 0;
+                                       config_fp_parse_line( &ca );
+                                       
+                                       if ( strcasecmp( ca.argv[ 0 ], "suffixmassage" ) == 0 ) {
+                                               rc = rwm_suffixmassage_config( &db, c->fname, c->lineno,
+                                                       ca.argc, ca.argv );
+
+                                       } else {
+                                               rc = rwm_rw_config( &db, c->fname, c->lineno,
+                                                       ca.argc, ca.argv );
+                                       }
+
+                                       ch_free( ca.tline );
+                                       ch_free( ca.argv );
+
+                                       assert( rc == 0 );
+                               }
+
+                       } else if ( rwmap->rwm_rw != NULL ) {
+                               rewrite_info_delete( &rwmap->rwm_rw );
+                               assert( rwmap->rwm_rw == NULL );
+
+                               ber_bvarray_free( rwmap->rwm_bva_rewrite );
+                               rwmap->rwm_bva_rewrite = NULL;
+
+                               rc = rwm_info_init( &rwmap->rwm_rw );
+                       }
+                       break;
+
+               case RWM_CF_T_F_SUPPORT:
+                       rwmap->rwm_flags &= ~RWM_F_SUPPORT_T_F_MASK2;
+                       break;
+
+               case RWM_CF_MAP:
+                       if ( c->valx >= 0 ) {
+                               struct ldapmap rwm_oc = rwmap->rwm_oc;
+                               struct ldapmap rwm_at = rwmap->rwm_at;
+                               char *argv[5];
+                               int cnt = 0;
+
+                               if ( rwmap->rwm_bva_map ) {
+                                       for ( ; !BER_BVISNULL( &rwmap->rwm_bva_map[ cnt ] ); cnt++ )
+                                               /* count */ ;
+                               }
+
+                               if ( c->valx >= cnt ) {
+                                       rc = 1;
+                                       break;
+                               }
+
+                               memset( &rwmap->rwm_oc, 0, sizeof( rwmap->rwm_oc ) );
+                               memset( &rwmap->rwm_at, 0, sizeof( rwmap->rwm_at ) );
+
+                               /* re-parse all mappings except the one
+                                * that needs to be eliminated */
+                               argv[0] = "map";
+                               for ( cnt = 0; !BER_BVISNULL( &rwmap->rwm_bva_map[ cnt ] ); cnt++ ) {
+                                       ConfigArgs ca = { 0 };
+
+                                       if ( cnt == c->valx ) {
+                                               continue;
+                                       }
+
+                                       ca.line = rwmap->rwm_bva_map[ cnt ].bv_val;
+                                       ca.argc = 0;
+                                       config_fp_parse_line( &ca );
+                                       
+                                       argv[1] = ca.argv[0];
+                                       argv[2] = ca.argv[1];
+                                       argv[3] = ca.argv[2];
+                                       argv[4] = ca.argv[3];
+                       
+                                       rc = rwm_m_config( &db, c->fname, c->lineno, ca.argc + 1, argv );
+
+                                       ch_free( ca.tline );
+                                       ch_free( ca.argv );
+
+                                       /* in case of failure, restore
+                                        * the existing mapping */
+                                       if ( rc ) {
+                                               avl_free( rwmap->rwm_oc.remap, rwm_mapping_dst_free );
+                                               avl_free( rwmap->rwm_oc.map, rwm_mapping_free );
+                                               avl_free( rwmap->rwm_at.remap, rwm_mapping_dst_free );
+                                               avl_free( rwmap->rwm_at.map, rwm_mapping_free );
+                                               rwmap->rwm_oc = rwm_oc;
+                                               rwmap->rwm_at = rwm_at;
+                                               break;
+                                       }
+                               }
+
+                               /* in case of success, destroy the old mapping
+                                * and eliminate the deleted one */
+                               if ( rc == 0 ) {
+                                       avl_free( rwm_oc.remap, rwm_mapping_dst_free );
+                                       avl_free( rwm_oc.map, rwm_mapping_free );
+                                       avl_free( rwm_at.remap, rwm_mapping_dst_free );
+                                       avl_free( rwm_at.map, rwm_mapping_free );
+
+                                       ber_memfree( rwmap->rwm_bva_map[ c->valx ].bv_val );
+                                       for ( cnt = c->valx; !BER_BVISNULL( &rwmap->rwm_bva_map[ cnt ] ); cnt++ ) {
+                                               rwmap->rwm_bva_map[ cnt ] = rwmap->rwm_bva_map[ cnt + 1 ];
+                                       }
+                               }
+
+                       } else {
+                               avl_free( rwmap->rwm_oc.remap, rwm_mapping_dst_free );
+                               avl_free( rwmap->rwm_oc.map, rwm_mapping_free );
+                               avl_free( rwmap->rwm_at.remap, rwm_mapping_dst_free );
+                               avl_free( rwmap->rwm_at.map, rwm_mapping_free );
+
+                               rwmap->rwm_oc.remap = NULL;
+                               rwmap->rwm_oc.map = NULL;
+                               rwmap->rwm_at.remap = NULL;
+                               rwmap->rwm_at.map = NULL;
+
+                               ber_bvarray_free( rwmap->rwm_bva_map );
+                               rwmap->rwm_bva_map = NULL;
+                       }
+                       break;
+
+               case RWM_CF_NORMALIZE_MAPPED:
+                       rwmap->rwm_flags &= ~RWM_F_NORMALIZE_MAPPED_ATTRS;
+                       break;
+
+               case RWM_CF_DROP_UNREQUESTED:
+                       rwmap->rwm_flags &= ~RWM_F_DROP_UNREQUESTED_ATTRS;
+                       break;
+
+               default:
+                       return 1;
+               }
+               return rc;
+       }
+
+       if ( strncasecmp( c->argv[ 0 ], "olcRwm", STRLENOF( "olcRwm" ) ) == 0 ) {
+               idx0 = 1;
+       }
+
+       switch ( c->type ) {
+       case RWM_CF_REWRITE:
+               if ( c->valx >= 0 ) {
+                       struct rewrite_info *rwm_rw = rwmap->rwm_rw;
+                       int i, last;
+
+                       for ( last = 0; rwmap->rwm_bva_rewrite && !BER_BVISNULL( &rwmap->rwm_bva_rewrite[ last ] ); last++ )
+                               /* count'em */ ;
+
+                       if ( c->valx > last ) {
+                               c->valx = last;
+                       }
+
+                       rwmap->rwm_rw = NULL;
+                       rc = rwm_info_init( &rwmap->rwm_rw );
+
+                       for ( i = 0; i < c->valx; i++ ) {
+                               ConfigArgs ca = { 0 };
+
+                               ca.line = rwmap->rwm_bva_rewrite[ i ].bv_val;
+                               ca.argc = 0;
+                               config_fp_parse_line( &ca );
+
+                               argv0 = ca.argv[ 0 ];
+                               ca.argv[ 0 ] += STRLENOF( "rwm-" );
+                               
+                               if ( strcasecmp( ca.argv[ 0 ], "suffixmassage" ) == 0 ) {
+                                       rc = rwm_suffixmassage_config( &db, c->fname, c->lineno,
+                                               ca.argc, ca.argv );
+
+                               } else {
+                                       rc = rwm_rw_config( &db, c->fname, c->lineno,
+                                               ca.argc, ca.argv );
+                               }
+
+                               ca.argv[ 0 ] = argv0;
+
+                               ch_free( ca.tline );
+                               ch_free( ca.argv );
+
+                               assert( rc == 0 );
+                       }
+
+                       argv0 = c->argv[ idx0 ];
+                       if ( strncasecmp( argv0, "rwm-", STRLENOF( "rwm-" ) ) != 0 ) {
+                               return 1;
+                       }
+                       c->argv[ idx0 ] += STRLENOF( "rwm-" );
+                       if ( strcasecmp( c->argv[ idx0 ], "suffixmassage" ) == 0 ) {
+                               rc = rwm_suffixmassage_config( &db, c->fname, c->lineno,
+                                       c->argc - idx0, &c->argv[ idx0 ] );
+
+                       } else {
+                               rc = rwm_rw_config( &db, c->fname, c->lineno,
+                                       c->argc - idx0, &c->argv[ idx0 ] );
+                       }
+                       c->argv[ idx0 ] = argv0;
+                       if ( rc != 0 ) {
+                               rewrite_info_delete( &rwmap->rwm_rw );
+                               assert( rwmap->rwm_rw == NULL );
+
+                               rwmap->rwm_rw = rwm_rw;
+                               return 1;
+                       }
+
+                       for ( i = c->valx; rwmap->rwm_bva_rewrite && !BER_BVISNULL( &rwmap->rwm_bva_rewrite[ i ] ); i++ )
+                       {
+                               ConfigArgs ca = { 0 };
+
+                               ca.line = rwmap->rwm_bva_rewrite[ i ].bv_val;
+                               ca.argc = 0;
+                               config_fp_parse_line( &ca );
+                               
+                               argv0 = ca.argv[ 0 ];
+                               ca.argv[ 0 ] += STRLENOF( "rwm-" );
+                               
+                               if ( strcasecmp( ca.argv[ 0 ], "suffixmassage" ) == 0 ) {
+                                       rc = rwm_suffixmassage_config( &db, c->fname, c->lineno,
+                                               ca.argc, ca.argv );
+
+                               } else {
+                                       rc = rwm_rw_config( &db, c->fname, c->lineno,
+                                               ca.argc, ca.argv );
+                               }
+
+                               ca.argv[ 0 ] = argv0;
+
+                               ch_free( ca.tline );
+                               ch_free( ca.argv );
+
+                               assert( rc == 0 );
+                       }
+
+                       rwmap->rwm_bva_rewrite = ch_realloc( rwmap->rwm_bva_rewrite,
+                               ( last + 2 )*sizeof( struct berval ) );
+                       BER_BVZERO( &rwmap->rwm_bva_rewrite[last+1] );
+
+                       for ( i = last - 1; i >= c->valx; i-- )
+                       {
+                               rwmap->rwm_bva_rewrite[ i + 1 ] = rwmap->rwm_bva_rewrite[ i ];
+                       }
+
+                       rwm_bva_rewrite_add( rwmap, c->valx, &c->argv[ idx0 ] );
+
+                       rewrite_info_delete( &rwm_rw );
+                       assert( rwm_rw == NULL );
+
+                       break;
+               }
+
+               argv0 = c->argv[ idx0 ];
+               if ( strncasecmp( argv0, "rwm-", STRLENOF( "rwm-" ) ) != 0 ) {
+                       return 1;
+               }
+               c->argv[ idx0 ] += STRLENOF( "rwm-" );
+               if ( strcasecmp( c->argv[ idx0 ], "suffixmassage" ) == 0 ) {
+                       rc = rwm_suffixmassage_config( &db, c->fname, c->lineno,
+                               c->argc - idx0, &c->argv[ idx0 ] );
+
+               } else {
+                       rc = rwm_rw_config( &db, c->fname, c->lineno,
+                               c->argc - idx0, &c->argv[ idx0 ] );
+               }
+               c->argv[ idx0 ] = argv0;
+               if ( rc ) {
+                       return 1;
+
+               } else {
+                       rwm_bva_rewrite_add( rwmap, -1, &c->argv[ idx0 ] );
+               }
+               break;
+
+       case RWM_CF_T_F_SUPPORT:
+               rc = verb_to_mask( c->argv[ 1 ], t_f_mode );
+               if ( BER_BVISNULL( &t_f_mode[ rc ].word ) ) {
+                       return 1;
+               }
+
+               rwmap->rwm_flags &= ~RWM_F_SUPPORT_T_F_MASK2;
+               rwmap->rwm_flags |= t_f_mode[ rc ].mask;
+               rc = 0;
+               break;
+
+       case RWM_CF_MAP:
+               if ( c->valx >= 0 ) {
+                       struct ldapmap rwm_oc = rwmap->rwm_oc;
+                       struct ldapmap rwm_at = rwmap->rwm_at;
+                       char *argv[5];
+                       int cnt = 0;
+
+                       if ( rwmap->rwm_bva_map ) {
+                               for ( ; !BER_BVISNULL( &rwmap->rwm_bva_map[ cnt ] ); cnt++ )
+                                       /* count */ ;
+                       }
+
+                       if ( c->valx >= cnt ) {
+                               c->valx = cnt;
+                       }
+
+                       memset( &rwmap->rwm_oc, 0, sizeof( rwmap->rwm_oc ) );
+                       memset( &rwmap->rwm_at, 0, sizeof( rwmap->rwm_at ) );
+
+                       /* re-parse all mappings, including the one
+                        * that needs to be added */
+                       argv[0] = "map";
+                       for ( cnt = 0; cnt < c->valx; cnt++ ) {
+                               ConfigArgs ca = { 0 };
+
+                               ca.line = rwmap->rwm_bva_map[ cnt ].bv_val;
+                               ca.argc = 0;
+                               config_fp_parse_line( &ca );
+
+                               argv[1] = ca.argv[0];
+                               argv[2] = ca.argv[1];
+                               argv[3] = ca.argv[2];
+                               argv[4] = ca.argv[3];
+                       
+                               rc = rwm_m_config( &db, c->fname, c->lineno, ca.argc + 1, argv );
+
+                               ch_free( ca.tline );
+                               ch_free( ca.argv );
+
+                               /* in case of failure, restore
+                                * the existing mapping */
+                               if ( rc ) {
+                                       goto rwmmap_fail;
+                               }
+                       }
+
+                       argv0 = c->argv[0];
+                       c->argv[0] = "map";
+                       rc = rwm_m_config( &db, c->fname, c->lineno, c->argc, c->argv );
+                       c->argv[0] = argv0;
+                       if ( rc ) {
+                               goto rwmmap_fail;
+                       }
+
+                       if ( rwmap->rwm_bva_map ) {
+                               for ( ; !BER_BVISNULL( &rwmap->rwm_bva_map[ cnt ] ); cnt++ ) {
+                                       ConfigArgs ca = { 0 };
+
+                                       ca.line = rwmap->rwm_bva_map[ cnt ].bv_val;
+                                       ca.argc = 0;
+                                       config_fp_parse_line( &ca );
+                       
+                                       argv[1] = ca.argv[0];
+                                       argv[2] = ca.argv[1];
+                                       argv[3] = ca.argv[2];
+                                       argv[4] = ca.argv[3];
+                       
+                                       rc = rwm_m_config( &db, c->fname, c->lineno, ca.argc + 1, argv );
+
+                                       ch_free( ca.tline );
+                                       ch_free( ca.argv );
+
+                                       /* in case of failure, restore
+                                        * the existing mapping */
+                                       if ( rc ) {
+                                               goto rwmmap_fail;
+                                       }
+                               }
+                       }
+
+                       /* in case of success, destroy the old mapping
+                        * and add the new one */
+                       if ( rc == 0 ) {
+                               BerVarray tmp;
+                               struct berval bv, *bvp = &bv;
+
+                               if ( rwm_bva_add( &bvp, 0, &c->argv[ idx0 ] ) ) {
+                                       rc = 1;
+                                       goto rwmmap_fail;
+                               }
+                                       
+                               tmp = ber_memrealloc( rwmap->rwm_bva_map,
+                                       sizeof( struct berval )*( cnt + 2 ) );
+                               if ( tmp == NULL ) {
+                                       ber_memfree( bv.bv_val );
+                                       rc = 1;
+                                       goto rwmmap_fail;
+                               }
+                               rwmap->rwm_bva_map = tmp;
+                               BER_BVZERO( &rwmap->rwm_bva_map[ cnt + 1 ] );
+
+                               avl_free( rwm_oc.remap, rwm_mapping_dst_free );
+                               avl_free( rwm_oc.map, rwm_mapping_free );
+                               avl_free( rwm_at.remap, rwm_mapping_dst_free );
+                               avl_free( rwm_at.map, rwm_mapping_free );
+
+                               for ( ; cnt-- > c->valx; ) {
+                                       rwmap->rwm_bva_map[ cnt + 1 ] = rwmap->rwm_bva_map[ cnt ];
+                               }
+                               rwmap->rwm_bva_map[ c->valx ] = bv;
+
+                       } else {
+rwmmap_fail:;
+                               avl_free( rwmap->rwm_oc.remap, rwm_mapping_dst_free );
+                               avl_free( rwmap->rwm_oc.map, rwm_mapping_free );
+                               avl_free( rwmap->rwm_at.remap, rwm_mapping_dst_free );
+                               avl_free( rwmap->rwm_at.map, rwm_mapping_free );
+                               rwmap->rwm_oc = rwm_oc;
+                               rwmap->rwm_at = rwm_at;
+                       }
+
+                       break;
+               }
+
+               argv0 = c->argv[ 0 ];
+               c->argv[ 0 ] += STRLENOF( "rwm-" );
+               rc = rwm_m_config( &db, c->fname, c->lineno, c->argc, c->argv );
+               c->argv[ 0 ] = argv0;
+               if ( rc ) {
+                       return 1;
+
+               } else {
+                       char            *line;
+                       struct berval   bv;
+
+                       line = ldap_charray2str( &c->argv[ 1 ], " " );
+                       if ( line != NULL ) {
+                               ber_str2bv( line, 0, 0, &bv );
+                               ber_bvarray_add( &rwmap->rwm_bva_map, &bv );
+                       }
+               }
+               break;
+
+       case RWM_CF_NORMALIZE_MAPPED:
+               if ( c->value_int ) {
+                       rwmap->rwm_flags |= RWM_F_NORMALIZE_MAPPED_ATTRS;
+               } else {
+                       rwmap->rwm_flags &= ~RWM_F_NORMALIZE_MAPPED_ATTRS;
+               }
+               break;
+
+       case RWM_CF_DROP_UNREQUESTED:
+               if ( c->value_int ) {
+                       rwmap->rwm_flags |= RWM_F_DROP_UNREQUESTED_ATTRS;
+               } else {
+                       rwmap->rwm_flags &= ~RWM_F_DROP_UNREQUESTED_ATTRS;
+               }
+               break;
+
+       default:
+               assert( 0 );
+               return 1;
+       }
+
+       return rc;
+}
+
+static int
+rwm_db_init(
+       BackendDB       *be,
+       ConfigReply     *cr )
+{
+       slap_overinst           *on = (slap_overinst *) be->bd_info;
+       struct ldaprwmap        *rwmap;
+       int                     rc = 0;
+
+       rwmap = (struct ldaprwmap *)ch_calloc( 1, sizeof( struct ldaprwmap ) );
+
+       /* default */
+       rwmap->rwm_flags = RWM_F_DROP_UNREQUESTED_ATTRS;
+
+       rc = rwm_info_init( &rwmap->rwm_rw );
 
-error_return:;
        on->on_bi.bi_private = (void *)rwmap;
 
        if ( rc ) {
-               (void)rwm_db_destroy( be );
+               (void)rwm_db_destroy( be, NULL );
        }
 
        return rc;
@@ -1692,7 +2650,8 @@ error_return:;
 
 static int
 rwm_db_destroy(
-       BackendDB       *be )
+       BackendDB       *be,
+       ConfigReply     *cr )
 {
        slap_overinst   *on = (slap_overinst *) be->bd_info;
        int             rc = 0;
@@ -1701,20 +2660,17 @@ rwm_db_destroy(
                struct ldaprwmap        *rwmap = 
                        (struct ldaprwmap *)on->on_bi.bi_private;
 
-#ifdef ENABLE_REWRITE
                if ( rwmap->rwm_rw ) {
                        rewrite_info_delete( &rwmap->rwm_rw );
+                       if ( rwmap->rwm_bva_rewrite )
+                               ber_bvarray_free( rwmap->rwm_bva_rewrite );
                }
-#else /* !ENABLE_REWRITE */
-               if ( rwmap->rwm_suffix_massage ) {
-                       ber_bvarray_free( rwmap->rwm_suffix_massage );
-               }
-#endif /* !ENABLE_REWRITE */
 
                avl_free( rwmap->rwm_oc.remap, rwm_mapping_dst_free );
                avl_free( rwmap->rwm_oc.map, rwm_mapping_free );
                avl_free( rwmap->rwm_at.remap, rwm_mapping_dst_free );
                avl_free( rwmap->rwm_at.map, rwm_mapping_free );
+               ber_bvarray_free( rwmap->rwm_bva_map );
 
                ch_free( rwmap );
        }
@@ -1730,6 +2686,11 @@ static
 int
 rwm_initialize( void )
 {
+       int             rc;
+
+       /* Make sure we don't exceed the bits reserved for userland */
+       config_check_userland( RWM_CF_LAST );
+
        memset( &rwm, 0, sizeof( slap_overinst ) );
 
        rwm.on_bi.bi_type = "rwm";
@@ -1750,17 +2711,26 @@ rwm_initialize( void )
        rwm.on_bi.bi_op_delete = rwm_op_delete;
        rwm.on_bi.bi_op_unbind = rwm_op_unbind;
        rwm.on_bi.bi_extended = rwm_extended;
+#if 1 /* TODO */
+       rwm.on_bi.bi_entry_release_rw = rwm_entry_release_rw;
+       rwm.on_bi.bi_entry_get_rw = rwm_entry_get_rw;
+#endif
 
        rwm.on_bi.bi_operational = rwm_operational;
        rwm.on_bi.bi_chk_referrals = 0 /* rwm_chk_referrals */ ;
 
-#ifdef ENABLE_REWRITE
        rwm.on_bi.bi_connection_init = rwm_conn_init;
        rwm.on_bi.bi_connection_destroy = rwm_conn_destroy;
-#endif /* ENABLE_REWRITE */
 
        rwm.on_response = rwm_response;
 
+       rwm.on_bi.bi_cf_ocs = rwmocs;
+
+       rc = config_register_schema( rwmcfg, rwmocs );
+       if ( rc ) {
+               return rc;
+       }
+
        return overlay_register( &rwm );
 }