]> git.sur5r.net Git - openldap/blobdiff - servers/slapd/result.c
ITS#5276 from HEAD
[openldap] / servers / slapd / result.c
index 0e0899fae39d83291c7c28ed45f03e996fcb8afb..16ffad273cbdb785827fd1f8021acabfa8368d0e 100644 (file)
@@ -1,8 +1,27 @@
 /* result.c - routines to send ldap results, errors, and referrals */
 /* $OpenLDAP$ */
-/*
- * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
- * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2007 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* Portions Copyright (c) 1995 Regents of the University of Michigan.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that this notice is preserved and that due credit is given
+ * to the University of Michigan at Ann Arbor. The name of the University
+ * may not be used to endorse or promote products derived from this
+ * software without specific prior written permission. This software
+ * is provided ``as is'' without express or implied warranty.
  */
 
 #include "portable.h"
 
 #include "slap.h"
 
-#ifdef LDAP_SLAPI
-#include "slapi.h"
-#endif
+const struct berval slap_dummy_bv = BER_BVNULL;
+
+int slap_null_cb( Operation *op, SlapReply *rs )
+{
+       return 0;
+}
+
+int slap_freeself_cb( Operation *op, SlapReply *rs )
+{
+       assert( op->o_callback != NULL );
+
+       op->o_tmpfree( op->o_callback, op->o_tmpmemctx );
+       op->o_callback = NULL;
+
+       return SLAP_CB_CONTINUE;
+}
+
+int slap_replog_cb( Operation *op, SlapReply *rs )
+{
+       if ( rs->sr_err == LDAP_SUCCESS ) {
+               replog( op );
+       }
+       return SLAP_CB_CONTINUE;
+}
 
 static char *v2ref( BerVarray ref, const char *text )
 {
@@ -42,15 +82,7 @@ static char *v2ref( BerVarray ref, const char *text )
                }
        }
 
-       v2 = SLAP_MALLOC( len+i+sizeof("Referral:") );
-       if( v2 == NULL ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, ERR, "v2ref: SLAP_MALLOC failed", 0, 0, 0 );
-#else
-               Debug( LDAP_DEBUG_ANY, "v2ref: SLAP_MALLOC failed", 0, 0, 0 );
-#endif
-               return NULL;
-       }
+       v2 = ch_malloc( len+i+sizeof("Referral:") );
 
        if( text != NULL ) {
                strcpy(v2, text);
@@ -62,15 +94,7 @@ static char *v2ref( BerVarray ref, const char *text )
        len += sizeof("Referral:");
 
        for( i=0; ref[i].bv_val != NULL; i++ ) {
-               v2 = SLAP_REALLOC( v2, len + ref[i].bv_len + 1 );
-               if( v2 == NULL ) {
-#ifdef NEW_LOGGING
-                       LDAP_LOG( OPERATION, ERR, "v2ref: SLAP_MALLOC failed", 0, 0, 0 );
-#else
-                       Debug( LDAP_DEBUG_ANY, "v2ref: SLAP_MALLOC failed", 0, 0, 0 );
-#endif
-                       return NULL;
-               }
+               v2 = ch_realloc( v2, len + ref[i].bv_len + 1 );
                v2[len-1] = '\n';
                AC_MEMCPY(&v2[len], ref[i].bv_val, ref[i].bv_len );
                len += ref[i].bv_len;
@@ -83,7 +107,8 @@ static char *v2ref( BerVarray ref, const char *text )
        return v2;
 }
 
-static ber_tag_t req2res( ber_tag_t tag )
+ber_tag_t
+slap_req2res( ber_tag_t tag )
 {
        switch( tag ) {
        case LDAP_REQ_ADD:
@@ -145,7 +170,7 @@ static long send_ldap_ber(
                        break;
                }
 
-               err = errno;
+               err = sock_errno();
 
                /*
                 * we got an error.  if it's ewouldblock, we need to
@@ -153,17 +178,11 @@ static long send_ldap_ber(
                 * it's a hard error and return.
                 */
 
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, ERR, 
-                       "send_ldap_ber: conn %lu  ber_flush failed err=%d (%s)\n",
-                       conn ? conn->c_connid : 0, err, sock_errstr(err) );
-#else
                Debug( LDAP_DEBUG_CONNS, "ber_flush failed errno=%d reason=\"%s\"\n",
                    err, sock_errstr(err), 0 );
-#endif
 
                if ( err != EWOULDBLOCK && err != EAGAIN ) {
-                       connection_closing( conn );
+                       connection_closing( conn, "connection lost on write" );
 
                        ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
                        ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
@@ -187,52 +206,114 @@ static long send_ldap_ber(
 }
 
 static int
-send_ldap_controls( BerElement *ber, LDAPControl **c )
+send_ldap_control( BerElement *ber, LDAPControl *c )
 {
        int rc;
-       if( c == NULL ) return 0;
+
+       assert( c != NULL );
+
+       rc = ber_printf( ber, "{s" /*}*/, c->ldctl_oid );
+
+       if( c->ldctl_iscritical ) {
+               rc = ber_printf( ber, "b",
+                       (ber_int_t) c->ldctl_iscritical ) ;
+               if( rc == -1 ) return rc;
+       }
+
+       if( c->ldctl_value.bv_val != NULL ) {
+               rc = ber_printf( ber, "O", &c->ldctl_value ); 
+               if( rc == -1 ) return rc;
+       }
+
+       rc = ber_printf( ber, /*{*/"N}" );
+       if( rc == -1 ) return rc;
+
+       return 0;
+}
+
+static int
+send_ldap_controls( Operation *o, BerElement *ber, LDAPControl **c )
+{
+       int rc;
+
+       if( c == NULL )
+               return 0;
 
        rc = ber_printf( ber, "t{"/*}*/, LDAP_TAG_CONTROLS );
        if( rc == -1 ) return rc;
 
        for( ; *c != NULL; c++) {
-               rc = ber_printf( ber, "{s" /*}*/, (*c)->ldctl_oid );
+               rc = send_ldap_control( ber, *c );
+               if( rc == -1 ) return rc;
+       }
 
-               if( (*c)->ldctl_iscritical ) {
-                       rc = ber_printf( ber, "b",
-                               (ber_int_t) (*c)->ldctl_iscritical ) ;
-                       if( rc == -1 ) return rc;
-               }
+#ifdef LDAP_DEVEL
+       /* this is a hack to avoid having to modify op->s_ctrls */
+       if( o->o_sortedresults ) {
+               BerElementBuffer berbuf;
+               BerElement *sber = (BerElement *) &berbuf;
+               LDAPControl sorted;
+               BER_BVZERO( &sorted.ldctl_value );
+               sorted.ldctl_oid = LDAP_CONTROL_SORTRESPONSE;
+               sorted.ldctl_iscritical = 0;
+
+               ber_init2( sber, NULL, LBER_USE_DER );
 
-               if( (*c)->ldctl_value.bv_val != NULL ) {
-                       rc = ber_printf( ber, "O", &((*c)->ldctl_value)); 
-                       if( rc == -1 ) return rc;
+               ber_printf( sber, "{e}", LDAP_UNWILLING_TO_PERFORM );
+
+               if( ber_flatten2( ber, &sorted.ldctl_value, 0 ) == -1 ) {
+                       return -1;
                }
 
-               rc = ber_printf( ber, /*{*/"N}" );
+               (void) ber_free_buf( ber );
+
+               rc = send_ldap_control( ber, &sorted );
                if( rc == -1 ) return rc;
        }
+#endif
 
        rc = ber_printf( ber, /*{*/"N}" );
 
        return rc;
 }
 
-static void
+static int
 send_ldap_response(
        Operation *op,
        SlapReply *rs )
 {
-       char berbuf[LBER_ELEMENT_SIZEOF];
-       BerElement      *ber = (BerElement *)berbuf;
-       int             rc;
+       BerElementBuffer berbuf;
+       BerElement      *ber = (BerElement *) &berbuf;
+       int             rc = LDAP_SUCCESS;
        long    bytes;
 
-       if (op->o_callback && op->o_callback->sc_response) {
-               op->o_callback->sc_response( op, rs );
-               return;
+       if ( rs->sr_err == SLAPD_ABANDON || op->o_abandon ) {
+               rc = SLAPD_ABANDON;
+               goto clean2;
        }
-               
+
+       if ( op->o_callback ) {
+               slap_callback   *sc = op->o_callback, **sc_prev = &sc, *sc_next;
+
+               rc = SLAP_CB_CONTINUE;
+               for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
+                       sc_next = op->o_callback->sc_next;
+                       if ( op->o_callback->sc_response ) {
+                               slap_callback *sc2 = op->o_callback;
+                               rc = op->o_callback->sc_response( op, rs );
+                               if ( op->o_callback != sc2 ) {
+                                       *sc_prev = op->o_callback;
+                               }
+                               if ( rc != SLAP_CB_CONTINUE || !op->o_callback ) break;
+                               if ( op->o_callback != sc2 ) continue;
+                       }
+                       sc_prev = &op->o_callback->sc_next;
+               }
+
+               op->o_callback = sc;
+               if ( rc != SLAP_CB_CONTINUE ) goto clean2;
+       }
+
 #ifdef LDAP_CONNECTIONLESS
        if (op->o_conn && op->o_conn->c_is_udp)
                ber = op->o_res_ber;
@@ -243,38 +324,31 @@ send_ldap_response(
                ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
        }
 
-#ifdef NEW_LOGGING
-       LDAP_LOG( OPERATION, ENTRY, 
-               "send_ldap_response:  msgid=%d tag=%lu err=%d\n",
-               rs->sr_msgid, rs->sr_tag, rs->sr_err );
-#else
        Debug( LDAP_DEBUG_TRACE,
                "send_ldap_response: msgid=%d tag=%lu err=%d\n",
                rs->sr_msgid, rs->sr_tag, rs->sr_err );
-#endif
 
        if( rs->sr_ref ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, ARGS, 
-                       "send_ldap_response: conn %lu  ref=\"%s\"\n",
-                       op->o_connid,
-                       rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL" , 0 );
-#else
                Debug( LDAP_DEBUG_ARGS, "send_ldap_response: ref=\"%s\"\n",
                        rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
                        NULL, NULL );
-#endif
        }
 
 #ifdef LDAP_CONNECTIONLESS
-       if (op->o_conn && op->o_conn->c_is_udp && op->o_protocol == LDAP_VERSION2) {
-               rc = ber_printf( ber, "t{ess" /*"}}"*/,
+       if (op->o_conn && op->o_conn->c_is_udp &&
+               op->o_protocol == LDAP_VERSION2 )
+       {
+               rc = ber_printf( ber, "t{ess" /*"}"*/,
                        rs->sr_tag, rs->sr_err,
                rs->sr_matched == NULL ? "" : rs->sr_matched,
                rs->sr_text == NULL ? "" : rs->sr_text );
        } else 
 #endif
-       {
+       if ( rs->sr_type == REP_INTERMEDIATE ) {
+           rc = ber_printf( ber, "{it{" /*"}}"*/,
+                       rs->sr_msgid, rs->sr_tag );
+
+       } else {
            rc = ber_printf( ber, "{it{ess" /*"}}"*/,
                rs->sr_msgid, rs->sr_tag, rs->sr_err,
                rs->sr_matched == NULL ? "" : rs->sr_matched,
@@ -296,14 +370,20 @@ send_ldap_response(
                        LDAP_TAG_SASL_RES_CREDS, rs->sr_sasldata );
        }
 
-       if( rc != -1 && rs->sr_type == REP_EXTENDED ) {
+       if( rc != -1 &&
+               ( rs->sr_type == REP_EXTENDED || rs->sr_type == REP_INTERMEDIATE ))
+       {
                if ( rs->sr_rspoid != NULL ) {
                        rc = ber_printf( ber, "ts",
-                               LDAP_TAG_EXOP_RES_OID, rs->sr_rspoid );
+                               rs->sr_type == REP_EXTENDED
+                                       ? LDAP_TAG_EXOP_RES_OID : LDAP_TAG_IM_RES_OID,
+                               rs->sr_rspoid );
                }
                if( rc != -1 && rs->sr_rspdata != NULL ) {
                        rc = ber_printf( ber, "tO",
-                               LDAP_TAG_EXOP_RES_VALUE, rs->sr_rspdata );
+                               rs->sr_type == REP_EXTENDED
+                                       ? LDAP_TAG_EXOP_RES_VALUE : LDAP_TAG_IM_RES_VALUE,
+                               rs->sr_rspdata );
                }
        }
 
@@ -311,8 +391,8 @@ send_ldap_response(
                rc = ber_printf( ber, /*"{"*/ "N}" );
        }
 
-       if( rc != -1 && rs->sr_ctrls != NULL ) {
-               rc = send_ldap_controls( ber, rs->sr_ctrls );
+       if( rc != -1 ) {
+               rc = send_ldap_controls( op, ber, rs->sr_ctrls );
        }
 
        if( rc != -1 ) {
@@ -320,25 +400,23 @@ send_ldap_response(
        }
 
 #ifdef LDAP_CONNECTIONLESS
-       if( op->o_conn && op->o_conn->c_is_udp && op->o_protocol == LDAP_VERSION2 && rc != -1 ) {
+       if( op->o_conn && op->o_conn->c_is_udp && op->o_protocol == LDAP_VERSION2
+               && rc != -1 )
+       {
                rc = ber_printf( ber, /*"{"*/ "N}" );
        }
 #endif
                
        if ( rc == -1 ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, ERR, 
-                       "send_ldap_response: conn %lu  ber_printf failed\n",
-                       op->o_connid, 0, 0 );
-#else
                Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
-#endif
 
 #ifdef LDAP_CONNECTIONLESS
                if (!op->o_conn || op->o_conn->c_is_udp == 0)
 #endif
-               ber_free_buf( ber );
-               return;
+               {
+                       ber_free_buf( ber );
+               }
+               goto cleanup;
        }
 
        /* send BER */
@@ -346,33 +424,61 @@ send_ldap_response(
 #ifdef LDAP_CONNECTIONLESS
        if (!op->o_conn || op->o_conn->c_is_udp == 0)
 #endif
-       ber_free_buf( ber );
+       {
+               ber_free_buf( ber );
+       }
 
        if ( bytes < 0 ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, ERR, 
-                       "send_ldap_response: conn %lu ber write failed\n",
-                       op->o_connid ? op->o_connid : 0, 0, 0 );
-#else
                Debug( LDAP_DEBUG_ANY,
                        "send_ldap_response: ber write failed\n",
                        0, 0, 0 );
-#endif
 
-               return;
+               goto cleanup;
+       }
+
+       ldap_pvt_thread_mutex_lock( &slap_counters.sc_sent_mutex );
+       ldap_pvt_mp_add_ulong( slap_counters.sc_pdu, 1 );
+       ldap_pvt_mp_add_ulong( slap_counters.sc_bytes, (unsigned long)bytes );
+       ldap_pvt_thread_mutex_unlock( &slap_counters.sc_sent_mutex );
+
+cleanup:;
+       /* Tell caller that we did this for real, as opposed to being
+        * overridden by a callback
+        */
+       rc = SLAP_CB_CONTINUE;
+
+clean2:;
+       if ( op->o_callback ) {
+               slap_callback   *sc = op->o_callback, **sc_prev = &sc, *sc_next;
+
+               for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
+                       sc_next = op->o_callback->sc_next;
+                       if ( op->o_callback->sc_cleanup ) {
+                               slap_callback *sc2 = op->o_callback;
+                               (void)op->o_callback->sc_cleanup( op, rs );
+                               if ( op->o_callback != sc2 ) {
+                                       *sc_prev = op->o_callback;
+                               }
+                               if ( !op->o_callback ) break;
+                               if ( op->o_callback != sc2 ) continue;
+                       }
+                       sc_prev = &op->o_callback->sc_next;
+               }
+               op->o_callback = sc;
+       }
+
+
+       if ( rs->sr_matched && rs->sr_flags & REP_MATCHED_MUSTBEFREED ) {
+               free( (char *)rs->sr_matched );
+               rs->sr_matched = NULL;
        }
 
-#ifdef LDAP_SLAPI
-       slapi_pblock_set( op->o_pb, SLAPI_RESULT_CODE, (void *)rs->sr_err );
-       slapi_pblock_set( op->o_pb, SLAPI_RESULT_MATCHED, ( rs->sr_matched != NULL ) ? (void *)ch_strdup( rs->sr_matched ) : NULL );
-       slapi_pblock_set( op->o_pb, SLAPI_RESULT_TEXT, ( rs->sr_text != NULL ) ? (void *)ch_strdup( rs->sr_text ) : NULL );
-#endif /* LDAP_SLAPI */
+       if ( rs->sr_ref && rs->sr_flags & REP_REF_MUSTBEFREED ) {
+               ber_bvarray_free( rs->sr_ref );
+               rs->sr_ref = NULL;
+       }
 
-       ldap_pvt_thread_mutex_lock( &num_sent_mutex );
-       num_bytes_sent += bytes;
-       num_pdu_sent++;
-       ldap_pvt_thread_mutex_unlock( &num_sent_mutex );
-       return;
+       return rc;
 }
 
 
@@ -388,20 +494,13 @@ send_ldap_disconnect( Operation   *op, SlapReply *rs )
 
        rs->sr_type = REP_EXTENDED;
 
-#ifdef NEW_LOGGING
-       LDAP_LOG( OPERATION, ENTRY, 
-               "send_ldap_disconnect: conn %lu  %d:%s\n",
-               op->o_connid, rs->sr_err, rs->sr_text ? rs->sr_text : "" );
-#else
        Debug( LDAP_DEBUG_TRACE,
                "send_ldap_disconnect %d:%s\n",
                rs->sr_err, rs->sr_text ? rs->sr_text : "", NULL );
-#endif
-
 
        if ( op->o_protocol < LDAP_VERSION3 ) {
                rs->sr_rspoid = NULL;
-               rs->sr_tag = req2res( op->o_tag );
+               rs->sr_tag = slap_req2res( op->o_tag );
                rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 
        } else {
@@ -410,11 +509,12 @@ send_ldap_disconnect( Operation   *op, SlapReply *rs )
                rs->sr_msgid = 0;
        }
 
-       send_ldap_response( op, rs );
-
-       Statslog( LDAP_DEBUG_STATS,
-           "conn=%lu op=%lu DISCONNECT tag=%lu err=%d text=%s\n",
-               op->o_connid, op->o_opid, rs->sr_tag, rs->sr_err, rs->sr_text ? rs->sr_text : "" );
+       if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
+               Statslog( LDAP_DEBUG_STATS,
+                       "%s DISCONNECT tag=%lu err=%d text=%s\n",
+                       op->o_log_prefix, rs->sr_tag, rs->sr_err,
+                       rs->sr_text ? rs->sr_text : "", 0 );
+       }
 }
 
 void
@@ -426,50 +526,34 @@ slap_send_ldap_result( Operation *op, SlapReply *rs )
 
        rs->sr_type = REP_RESULT;
 
-       assert( !LDAP_API_ERROR( rs->sr_err ) && ( rs->sr_err >= 0 ));
+       /* Propagate Abandons so that cleanup callbacks can be processed */
+       if ( rs->sr_err == SLAPD_ABANDON || op->o_abandon )
+               goto abandon;
+
+       assert( !LDAP_API_ERROR( rs->sr_err ) );
 
-#ifdef NEW_LOGGING
-       LDAP_LOG( OPERATION, ENTRY, 
-               "send_ldap_result: conn %lu op=%lu p=%d\n",
-               op->o_connid, op->o_opid, op->o_protocol );
-#else
        Debug( LDAP_DEBUG_TRACE,
-               "send_ldap_result: conn=%lu op=%lu p=%d\n",
-               op->o_connid, op->o_opid, op->o_protocol );
-#endif
+               "send_ldap_result: %s p=%d\n",
+               op->o_log_prefix, op->o_protocol, 0 );
 
-#ifdef NEW_LOGGING
-       LDAP_LOG( OPERATION, ARGS, 
-               "send_ldap_result: err=%d matched=\"%s\" text=\"%s\"\n",
-               rs->sr_err, rs->sr_matched ? rs->sr_matched : "", rs->sr_text ? rs->sr_text : "" );
-#else
        Debug( LDAP_DEBUG_ARGS,
                "send_ldap_result: err=%d matched=\"%s\" text=\"%s\"\n",
-               rs->sr_err, rs->sr_matched ? rs->sr_matched : "", rs->sr_text ? rs->sr_text : "" );
-#endif
+               rs->sr_err, rs->sr_matched ? rs->sr_matched : "",
+               rs->sr_text ? rs->sr_text : "" );
 
 
        if( rs->sr_ref ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, ARGS, 
-                       "send_ldap_result: referral=\"%s\"\n",
-                       rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL", 0, 0 );
-#else
                Debug( LDAP_DEBUG_ARGS,
                        "send_ldap_result: referral=\"%s\"\n",
                        rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
                        NULL, NULL );
-#endif
        }
 
        assert( rs->sr_err != LDAP_PARTIAL_RESULTS );
 
        if ( rs->sr_err == LDAP_REFERRAL ) {
-#ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
-               if( op->o_domain_scope ) {
-                       rs->sr_ref = NULL;
-               }
-#endif
+               if( op->o_domain_scope ) rs->sr_ref = NULL;
+
                if( rs->sr_ref == NULL ) {
                        rs->sr_err = LDAP_NO_SUCH_OBJECT;
                } else if ( op->o_protocol < LDAP_VERSION3 ) {
@@ -483,27 +567,29 @@ slap_send_ldap_result( Operation *op, SlapReply *rs )
                rs->sr_ref = NULL;
        }
 
-       rs->sr_tag = req2res( op->o_tag );
+       rs->sr_tag = slap_req2res( op->o_tag );
        rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 
-       send_ldap_response( op, rs );
-
-       if ( op->o_tag == LDAP_REQ_SEARCH ) {
-               char nbuf[64];
-               snprintf( nbuf, sizeof nbuf, "%d nentries=%d", rs->sr_err, rs->sr_nentries );
-
-               Statslog( LDAP_DEBUG_STATS,
-                       "conn=%lu op=%lu SEARCH RESULT tag=%lu err=%s text=%s\n",
-                       op->o_connid, op->o_opid, rs->sr_tag, nbuf, rs->sr_text ? rs->sr_text : "" );
-       } else {
-               Statslog( LDAP_DEBUG_STATS,
-                       "conn=%lu op=%lu RESULT tag=%lu err=%d text=%s\n",
-                       op->o_connid, op->o_opid, rs->sr_tag, rs->sr_err, rs->sr_text ? rs->sr_text : "" );
+abandon:
+       if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
+               if ( op->o_tag == LDAP_REQ_SEARCH ) {
+                       char nbuf[64];
+                       snprintf( nbuf, sizeof nbuf, "%d nentries=%d",
+                               rs->sr_err, rs->sr_nentries );
+
+                       Statslog( LDAP_DEBUG_STATS,
+                       "%s SEARCH RESULT tag=%lu err=%s text=%s\n",
+                               op->o_log_prefix, rs->sr_tag, nbuf,
+                               rs->sr_text ? rs->sr_text : "", 0 );
+               } else {
+                       Statslog( LDAP_DEBUG_STATS,
+                               "%s RESULT tag=%lu err=%d text=%s\n",
+                               op->o_log_prefix, rs->sr_tag, rs->sr_err,
+                               rs->sr_text ? rs->sr_text : "", 0 );
+               }
        }
 
-       if( tmp != NULL ) {
-               ch_free(tmp);
-       }
+       if( tmp != NULL ) ch_free(tmp);
        rs->sr_text = otext;
        rs->sr_ref = oref;
 }
@@ -512,19 +598,19 @@ void
 send_ldap_sasl( Operation *op, SlapReply *rs )
 {
        rs->sr_type = REP_SASL;
-#ifdef NEW_LOGGING
-       LDAP_LOG( OPERATION, ENTRY, 
-               "send_ldap_sasl: conn %lu err=%d len=%lu\n",
-               op->o_connid, rs->sr_err, rs->sr_sasldata ? rs->sr_sasldata->bv_len : -1 );
-#else
        Debug( LDAP_DEBUG_TRACE, "send_ldap_sasl: err=%d len=%ld\n",
-               rs->sr_err, rs->sr_sasldata ? (long) rs->sr_sasldata->bv_len : -1, NULL );
-#endif
+               rs->sr_err,
+               rs->sr_sasldata ? (long) rs->sr_sasldata->bv_len : -1, NULL );
 
-       rs->sr_tag = req2res( op->o_tag );
+       rs->sr_tag = slap_req2res( op->o_tag );
        rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 
-       send_ldap_response( op, rs );
+       if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
+               Statslog( LDAP_DEBUG_STATS,
+                       "%s RESULT tag=%lu err=%d text=%s\n",
+                       op->o_log_prefix, rs->sr_tag, rs->sr_err,
+                       rs->sr_text ? rs->sr_text : "", 0 );
+       }
 }
 
 void
@@ -532,66 +618,63 @@ slap_send_ldap_extended( Operation *op, SlapReply *rs )
 {
        rs->sr_type = REP_EXTENDED;
 
-#ifdef NEW_LOGGING
-       LDAP_LOG( OPERATION, ENTRY, 
-               "send_ldap_extended: err=%d oid=%s len=%ld\n",
-               rs->sr_err, rs->sr_rspoid ? rs->sr_rspoid : "",
-               rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
-#else
        Debug( LDAP_DEBUG_TRACE,
                "send_ldap_extended: err=%d oid=%s len=%ld\n",
                rs->sr_err,
                rs->sr_rspoid ? rs->sr_rspoid : "",
                rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
-#endif
 
-       rs->sr_tag = req2res( op->o_tag );
+       rs->sr_tag = slap_req2res( op->o_tag );
        rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 
-       send_ldap_response( op, rs );
+       if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
+               Statslog( LDAP_DEBUG_STATS,
+                       "%s RESULT oid=%s err=%d text=%s\n",
+                       op->o_log_prefix, rs->sr_rspoid ? rs->sr_rspoid : "",
+                       rs->sr_err, rs->sr_text ? rs->sr_text : "", 0 );
+       }
 }
 
-#ifdef LDAP_RES_INTERMEDIATE_RESP
 void
-slap_send_ldap_intermediate_resp( Operation *op, SlapReply *rs )
+slap_send_ldap_intermediate( Operation *op, SlapReply *rs )
 {
-       rs->sr_type = REP_EXTENDED;
-#ifdef NEW_LOGGING
-       LDAP_LOG( OPERATION, ENTRY,
-               "send_ldap_intermediate: err=%d oid=%s len=%ld\n",
-               rs->sr_err, rs->sr_rspoid ? rs->sr_rspoid : "",
-               rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
-#else
+       rs->sr_type = REP_INTERMEDIATE;
        Debug( LDAP_DEBUG_TRACE,
                "send_ldap_intermediate: err=%d oid=%s len=%ld\n",
                rs->sr_err,
                rs->sr_rspoid ? rs->sr_rspoid : "",
                rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
-#endif
-       rs->sr_tag = LDAP_RES_INTERMEDIATE_RESP;
+       rs->sr_tag = LDAP_RES_INTERMEDIATE;
        rs->sr_msgid = op->o_msgid;
-       send_ldap_response( op, rs );
+       if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
+               Statslog( LDAP_DEBUG_STATS2,
+                       "%s INTERM oid=%s\n",
+                       op->o_log_prefix,
+                       rs->sr_rspoid ? rs->sr_rspoid : "", 0, 0, 0 );
+       }
 }
-#endif
+
+/*
+ * returns:
+ *
+ * LDAP_SUCCESS                        entry sent
+ * LDAP_OTHER                  entry not sent (other)
+ * LDAP_INSUFFICIENT_ACCESS    entry not sent (ACL)
+ * LDAP_UNAVAILABLE            entry not sent (connection closed)
+ * LDAP_SIZELIMIT_EXCEEDED     entry not sent (caller must send sizelimitExceeded)
+ */
 
 int
 slap_send_search_entry( Operation *op, SlapReply *rs )
 {
-       char berbuf[LBER_ELEMENT_SIZEOF];
-       BerElement      *ber = (BerElement *)berbuf;
-       Attribute       *a, *aa;
-       int             i, j, rc=-1, bytes;
+       BerElementBuffer berbuf;
+       BerElement      *ber = (BerElement *) &berbuf;
+       Attribute       *a;
+       int             i, j, rc = LDAP_UNAVAILABLE, bytes;
        char            *edn;
        int             userattrs;
-       int             opattrs;
        AccessControlState acl_state = ACL_STATE_INIT;
-#ifdef LDAP_SLAPI
-       /* Support for computed attribute plugins */
-       computed_attr_context    ctx;
-       AttributeName   *anp;
-#endif
-       void            *mark = NULL;
-
+       int                      attrsonly;
        AttributeDescription *ad_entry = slap_schema.si_ad_entry;
 
        /* a_flags: array of flags telling if the i-th element will be
@@ -600,99 +683,120 @@ slap_send_search_entry( Operation *op, SlapReply *rs )
         */
        char **e_flags = NULL;
 
+       if ( op->ors_slimit >= 0 && rs->sr_nentries >= op->ors_slimit ) {
+               return LDAP_SIZELIMIT_EXCEEDED;
+       }
+
        rs->sr_type = REP_SEARCH;
-       if (op->o_callback && op->o_callback->sc_response) {
-               return op->o_callback->sc_response( op, rs );
+
+       /* eventually will loop through generated operational attribute types
+        * currently implemented types include:
+        *      entryDN, subschemaSubentry, and hasSubordinates */
+       /* NOTE: moved before overlays callback circling because
+        * they may modify entry and other stuff in rs */
+       /* check for special all operational attributes ("+") type */
+       /* FIXME: maybe we could se this flag at the operation level;
+        * however, in principle the caller of send_search_entry() may
+        * change the attribute list at each call */
+       rs->sr_attr_flags = slap_attr_flags( rs->sr_attrs );
+
+       rc = backend_operational( op, rs );
+       if ( rc ) {
+               goto error_return;
        }
 
-#ifdef NEW_LOGGING
-       LDAP_LOG( OPERATION, ENTRY, 
-               "send_search_entry: conn %lu    dn=\"%s\"%s\n",
-               op->o_connid, rs->sr_entry->e_name.bv_val, op->ors_attrsonly ? " (attrsOnly)" : "" );
-#else
-       Debug( LDAP_DEBUG_TRACE,
-               "=> send_search_entry: dn=\"%s\"%s\n",
-               rs->sr_entry->e_name.bv_val, op->ors_attrsonly ? " (attrsOnly)" : "", 0 );
-#endif
+       if ( op->o_callback ) {
+               slap_callback   *sc = op->o_callback, **sc_prev = &sc, *sc_next;
+
+               rc = SLAP_CB_CONTINUE;
+               for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next )
+               {
+                       sc_next = op->o_callback->sc_next;
+                       if ( op->o_callback->sc_response ) {
+                               slap_callback *sc2 = op->o_callback;
+                               rc = op->o_callback->sc_response( op, rs );
+                               if ( op->o_callback != sc2 ) {
+                                       *sc_prev = op->o_callback;
+                               }
+                               if ( rc != SLAP_CB_CONTINUE || !op->o_callback ) break;
+                               if ( op->o_callback != sc2 ) continue;
+                       }
+                       sc_prev = &op->o_callback->sc_next;
+               }
 
-       mark = sl_mark( op->o_tmpmemctx );
+               op->o_callback = sc;
+               if ( rc != SLAP_CB_CONTINUE ) goto error_return;
+       }
 
-       if ( ! access_allowed( op, rs->sr_entry, ad_entry, NULL, ACL_READ, NULL ) )
-       {
-#ifdef NEW_LOGGING
-               LDAP_LOG( ACL, INFO, 
+       Debug( LDAP_DEBUG_TRACE, "=> send_search_entry: conn %lu dn=\"%s\"%s\n",
+               op->o_connid, rs->sr_entry->e_name.bv_val,
+               op->ors_attrsonly ? " (attrsOnly)" : "" );
+
+       attrsonly = op->ors_attrsonly;
+
+       if ( !access_allowed( op, rs->sr_entry, ad_entry, NULL, ACL_READ, NULL )) {
+               Debug( LDAP_DEBUG_ACL,
                        "send_search_entry: conn %lu access to entry (%s) not allowed\n", 
                        op->o_connid, rs->sr_entry->e_name.bv_val, 0 );
-#else
-               Debug( LDAP_DEBUG_ACL,
-                       "send_search_entry: access to entry not allowed\n",
-                   0, 0, 0 );
-#endif
 
-               sl_release( mark, op->o_tmpmemctx );
-               return( 1 );
+               rc = LDAP_INSUFFICIENT_ACCESS;
+               goto error_return;
        }
 
        edn = rs->sr_entry->e_nname.bv_val;
 
-#ifdef LDAP_CONNECTIONLESS
-       if (op->o_conn && op->o_conn->c_is_udp)
+       if ( op->o_res_ber ) {
+               /* read back control or LDAP_CONNECTIONLESS */
            ber = op->o_res_ber;
-       else
-#endif
-       {
-               ber_len_t       siz, len;
+       } else {
                struct berval   bv;
 
-               entry_flatsize( rs->sr_entry, &siz, &len, 0 );
-               bv.bv_len = siz + len;
-               bv.bv_val = op->o_tmpalloc(bv.bv_len, op->o_tmpmemctx );
+               bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
+               bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
 
                ber_init2( ber, &bv, LBER_USE_DER );
                ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
        }
 
 #ifdef LDAP_CONNECTIONLESS
-       if (op->o_conn && op->o_conn->c_is_udp && op->o_protocol == LDAP_VERSION2) {
-           rc = ber_printf(ber, "t{O{" /*}}*/,
-               LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name);
+       if ( op->o_conn && op->o_conn->c_is_udp ) {
+               /* CONNECTIONLESS */
+               if ( op->o_protocol == LDAP_VERSION2 ) {
+               rc = ber_printf(ber, "t{O{" /*}}*/,
+                               LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
+               } else {
+               rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
+                               LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
+               }
        } else
 #endif
-       {
+       if ( op->o_res_ber ) {
+               /* read back control */
+           rc = ber_printf( ber, "{O{" /*}}*/, &rs->sr_entry->e_name );
+       } else {
            rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
-               LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
+                       LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
        }
 
        if ( rc == -1 ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, ERR, 
+               Debug( LDAP_DEBUG_ANY, 
                        "send_search_entry: conn %lu  ber_printf failed\n", 
                        op->o_connid, 0, 0 );
-#else
-               Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
-#endif
 
-#ifdef LDAP_CONNECTIONLESS
-               if (!op->o_conn || op->o_conn->c_is_udp == 0)
-#endif
-               ber_free_buf( ber );
+               if ( op->o_res_ber == NULL ) ber_free_buf( ber );
                send_ldap_error( op, rs, LDAP_OTHER, "encoding DN error" );
+               rc = rs->sr_err;
                goto error_return;
        }
 
        /* check for special all user attributes ("*") type */
-       userattrs = ( rs->sr_attrs == NULL ) ? 1
-               : an_find( rs->sr_attrs, &AllUser );
-
-       /* check for special all operational attributes ("+") type */
-       opattrs = ( rs->sr_attrs == NULL ) ? 0
-               : an_find( rs->sr_attrs, &AllOper );
+       userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
 
        /* create an array of arrays of flags. Each flag corresponds
         * to particular value of attribute and equals 1 if value matches
         * to ValuesReturnFilter or 0 if not
         */     
-       if ( op->vrFilter != NULL ) {
+       if ( op->o_vrFilter != NULL ) {
                int     k = 0;
                size_t  size;
 
@@ -703,16 +807,11 @@ slap_send_search_entry( Operation *op, SlapReply *rs )
                size = i * sizeof(char *) + k;
                if ( size > 0 ) {
                        char    *a_flags;
-                       e_flags = sl_calloc ( 1, i * sizeof(char *) + k, op->o_tmpmemctx );
+                       e_flags = slap_sl_calloc ( 1, i * sizeof(char *) + k, op->o_tmpmemctx );
                        if( e_flags == NULL ) {
-#ifdef NEW_LOGGING
-                               LDAP_LOG( OPERATION, ERR, 
-                                       "send_search_entry: conn %lu sl_calloc failed\n",
-                                       op->o_connid ? op->o_connid : 0, 0, 0 );
-#else
                        Debug( LDAP_DEBUG_ANY, 
-                                       "send_search_entry: sl_calloc failed\n", 0, 0, 0 );
-#endif
+                                       "send_search_entry: conn %lu slap_sl_calloc failed\n",
+                                       op->o_connid ? op->o_connid : 0, 0, 0 );
                                ber_free( ber, 1 );
        
                                send_ldap_error( op, rs, LDAP_OTHER, "out of memory" );
@@ -720,7 +819,7 @@ slap_send_search_entry( Operation *op, SlapReply *rs )
                        }
                        a_flags = (char *)(e_flags + i);
                        memset( a_flags, 0, k );
-                       for ( a = rs->sr_entry->e_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
+                       for ( a=rs->sr_entry->e_attrs, i=0; a != NULL; a=a->a_next, i++ ) {
                                for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
                                e_flags[i] = a_flags;
                                a_flags += j;
@@ -728,19 +827,13 @@ slap_send_search_entry( Operation *op, SlapReply *rs )
        
                        rc = filter_matched_values(op, rs->sr_entry->e_attrs, &e_flags) ; 
                        if ( rc == -1 ) {
-#ifdef NEW_LOGGING
-                               LDAP_LOG( OPERATION, ERR, 
-                                       "send_search_entry: conn %lu matched values filtering failed\n",
+                               Debug( LDAP_DEBUG_ANY, "send_search_entry: "
+                                       "conn %lu matched values filtering failed\n",
                                        op->o_connid ? op->o_connid : 0, 0, 0 );
-#else
-                       Debug( LDAP_DEBUG_ANY,
-                                       "matched values filtering failed\n", 0, 0, 0 );
-#endif
-#ifdef LDAP_CONNECTIONLESS
-                       if (!op->o_conn || op->o_conn->c_is_udp == 0)
-#endif
-                               ber_free( ber, 1 );
-                               send_ldap_error( op, rs, LDAP_OTHER, "matched values filtering error" );
+                               if ( op->o_res_ber == NULL ) ber_free_buf( ber );
+                               send_ldap_error( op, rs, LDAP_OTHER,
+                                       "matched values filtering error" );
+                               rc = rs->sr_err;
                                goto error_return;
                        }
                }
@@ -748,9 +841,10 @@ slap_send_search_entry( Operation *op, SlapReply *rs )
 
        for ( a = rs->sr_entry->e_attrs, j = 0; a != NULL; a = a->a_next, j++ ) {
                AttributeDescription *desc = a->a_desc;
+               int finish = 0;
 
                if ( rs->sr_attrs == NULL ) {
-                       /* all attrs request, skip operational attributes */
+                       /* all user attrs request, skip operational attributes */
                        if( is_at_operational( desc->ad_type ) ) {
                                continue;
                        }
@@ -758,120 +852,108 @@ slap_send_search_entry( Operation *op, SlapReply *rs )
                } else {
                        /* specific attrs requested */
                        if ( is_at_operational( desc->ad_type ) ) {
-                               if( !opattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
+                               if ( !SLAP_OPATTRS( rs->sr_attr_flags ) &&
+                                       !ad_inlist( desc, rs->sr_attrs ) )
+                               {
                                        continue;
                                }
 
                        } else {
-                               if (!userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
+                               if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
                                        continue;
                                }
                        }
                }
 
-               if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
-                       ACL_READ, &acl_state ) )
-               {
-#ifdef NEW_LOGGING
-                       LDAP_LOG( ACL, INFO, 
-                               "send_search_entry: conn %lu  access to attribute %s not "
-                               "allowed\n", op->o_connid, desc->ad_cname.bv_val, 0 );
-#else
-                       Debug( LDAP_DEBUG_ACL, "acl: "
-                               "access to attribute %s not allowed\n",
-                           desc->ad_cname.bv_val, 0, 0 );
-#endif
-                       continue;
-               }
+               if ( attrsonly ) {
+                       if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
+                               ACL_READ, &acl_state ) )
+                       {
+                               Debug( LDAP_DEBUG_ACL, "send_search_entry: "
+                                       "conn %lu access to attribute %s not allowed\n",
+                                       op->o_connid, desc->ad_cname.bv_val, 0 );
+                               continue;
+                       }
 
-               if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
-#ifdef NEW_LOGGING
-                       LDAP_LOG( OPERATION, ERR, 
-                               "send_search_entry: conn %lu  ber_printf failed\n", 
-                               op->o_connid, 0, 0 );
-#else
-                       Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
-#endif
+                       if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
+                               Debug( LDAP_DEBUG_ANY, 
+                                       "send_search_entry: conn %lu  ber_printf failed\n", 
+                                       op->o_connid, 0, 0 );
 
-#ifdef LDAP_CONNECTIONLESS
-                       if (!op->o_conn || op->o_conn->c_is_udp == 0)
-#endif
-                       ber_free_buf( ber );
-                       send_ldap_error( op, rs, LDAP_OTHER, "encoding description error");
-                       goto error_return;
-               }
+                               if ( op->o_res_ber == NULL ) ber_free_buf( ber );
+                               send_ldap_error( op, rs, LDAP_OTHER,
+                                       "encoding description error");
+                               rc = rs->sr_err;
+                               goto error_return;
+                       }
+                       finish = 1;
 
-               if ( ! op->ors_attrsonly ) {
-                       for ( i = 0; a->a_vals[i].bv_val != NULL; i++ ) {
+               } else {
+                       int first = 1;
+                       for ( i = 0; a->a_nvals[i].bv_val != NULL; i++ ) {
                                if ( ! access_allowed( op, rs->sr_entry,
-                                       desc, &a->a_vals[i], ACL_READ, &acl_state ) )
+                                       desc, &a->a_nvals[i], ACL_READ, &acl_state ) )
                                {
-#ifdef NEW_LOGGING
-                                       LDAP_LOG( ACL, INFO, 
+                                       Debug( LDAP_DEBUG_ACL,
                                                "send_search_entry: conn %lu "
-                                               "access to attribute %s, value %d not allowed\n",
+                                               "access to attribute %s, value #%d not allowed\n",
                                                op->o_connid, desc->ad_cname.bv_val, i );
-#else
-                                       Debug( LDAP_DEBUG_ACL,
-                                               "acl: access to attribute %s, "
-                                               "value %d not allowed\n",
-                                               desc->ad_cname.bv_val, i, 0 );
-#endif
 
                                        continue;
                                }
 
-                               if ( op->vrFilter && e_flags[j][i] == 0 ){
+                               if ( op->o_vrFilter && e_flags[j][i] == 0 ){
                                        continue;
                                }
 
+                               if ( first ) {
+                                       first = 0;
+                                       finish = 1;
+                                       if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
+                                               Debug( LDAP_DEBUG_ANY,
+                                                       "send_search_entry: conn %lu  ber_printf failed\n", 
+                                                       op->o_connid, 0, 0 );
+
+                                               if ( op->o_res_ber == NULL ) ber_free_buf( ber );
+                                               send_ldap_error( op, rs, LDAP_OTHER,
+                                                       "encoding description error");
+                                               rc = rs->sr_err;
+                                               goto error_return;
+                                       }
+                               }
                                if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
-#ifdef NEW_LOGGING
-                                       LDAP_LOG( OPERATION, ERR, 
+                                       Debug( LDAP_DEBUG_ANY,
                                                "send_search_entry: conn %lu  "
                                                "ber_printf failed.\n", op->o_connid, 0, 0 );
-#else
-                                       Debug( LDAP_DEBUG_ANY,
-                                           "ber_printf failed\n", 0, 0, 0 );
-#endif
 
-#ifdef LDAP_CONNECTIONLESS
-                                       if (!op->o_conn || op->o_conn->c_is_udp == 0)
-#endif
-                                       ber_free_buf( ber );
-                                       send_ldap_error( op, rs, LDAP_OTHER, "encoding values error" );
+                                       if ( op->o_res_ber == NULL ) ber_free_buf( ber );
+                                       send_ldap_error( op, rs, LDAP_OTHER,
+                                               "encoding values error" );
+                                       rc = rs->sr_err;
                                        goto error_return;
                                }
                        }
                }
 
-               if (( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
-#ifdef NEW_LOGGING
-                       LDAP_LOG( OPERATION, ERR, 
+               if ( finish && ( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
+                       Debug( LDAP_DEBUG_ANY,
                                "send_search_entry: conn %lu ber_printf failed\n", 
                                op->o_connid, 0, 0 );
-#else
-                       Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
-#endif
 
-#ifdef LDAP_CONNECTIONLESS
-                       if (!op->o_conn || op->o_conn->c_is_udp == 0)
-#endif
-                       ber_free_buf( ber );
+                       if ( op->o_res_ber == NULL ) ber_free_buf( ber );
                        send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
+                       rc = rs->sr_err;
                        goto error_return;
                }
        }
 
-       /* eventually will loop through generated operational attributes */
-       /* only have subschemaSubentry implemented */
-       aa = backend_operational( op, rs, opattrs );
-
-       if ( aa != NULL && op->vrFilter != NULL ) {
+       /* NOTE: moved before overlays callback circling because
+        * they may modify entry and other stuff in rs */
+       if ( rs->sr_operational_attrs != NULL && op->o_vrFilter != NULL ) {
                int     k = 0;
                size_t  size;
 
-               for ( a = aa, i=0; a != NULL; a = a->a_next, i++ ) {
+               for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
                        for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
                }
 
@@ -883,62 +965,48 @@ slap_send_search_entry( Operation *op, SlapReply *rs )
                         * Reuse previous memory - we likely need less space
                         * for operational attributes
                         */
-                       tmp = sl_realloc( e_flags, i * sizeof(char *) + k, op->o_tmpmemctx );
+                       tmp = slap_sl_realloc( e_flags, i * sizeof(char *) + k,
+                               op->o_tmpmemctx );
                        if ( tmp == NULL ) {
-#ifdef NEW_LOGGING
-                               LDAP_LOG( OPERATION, ERR, 
-                                       "send_search_entry: conn %lu "
-                                       "not enough memory "
-                                       "for matched values filtering\n", 
-                                       op->o_connid, 0, 0);
-#else
                                Debug( LDAP_DEBUG_ANY,
                                        "send_search_entry: conn %lu "
                                        "not enough memory "
                                        "for matched values filtering\n",
                                        op->o_connid, 0, 0 );
-#endif
-                               ber_free( ber, 1 );
-       
-                               send_ldap_error( op, rs, LDAP_OTHER, "not enough memory for matched values filtering" );
+                               if ( op->o_res_ber == NULL ) ber_free_buf( ber );
+                               send_ldap_error( op, rs, LDAP_OTHER,
+                                       "not enough memory for matched values filtering" );
                                goto error_return;
                        }
                        e_flags = tmp;
                        a_flags = (char *)(e_flags + i);
                        memset( a_flags, 0, k );
-                       for ( a = aa, i=0; a != NULL; a = a->a_next, i++ ) {
+                       for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
                                for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
                                e_flags[i] = a_flags;
                                a_flags += j;
                        }
-                       rc = filter_matched_values(op, aa, &e_flags) ; 
+                       rc = filter_matched_values(op, rs->sr_operational_attrs, &e_flags) ; 
                    
                        if ( rc == -1 ) {
-#ifdef NEW_LOGGING
-                               LDAP_LOG( OPERATION, ERR, 
+                               Debug( LDAP_DEBUG_ANY,
                                        "send_search_entry: conn %lu "
                                        "matched values filtering failed\n", 
                                        op->o_connid ? op->o_connid : 0, 0, 0);
-#else
-                               Debug( LDAP_DEBUG_ANY,
-                                       "matched values filtering failed\n", 0, 0, 0 );
-#endif
-#ifdef LDAP_CONNECTIONLESS
-                       if (!op->o_conn || op->o_conn->c_is_udp == 0)
-#endif
-                               ber_free( ber, 1 );
-       
-                               send_ldap_error( op, rs, LDAP_OTHER, "matched values filtering error" );
+                               if ( op->o_res_ber == NULL ) ber_free_buf( ber );
+                               send_ldap_error( op, rs, LDAP_OTHER,
+                                       "matched values filtering error" );
+                               rc = rs->sr_err;
                                goto error_return;
                        }
                }
        }
 
-       for (a = aa, j=0; a != NULL; a = a->a_next, j++ ) {
+       for (a = rs->sr_operational_attrs, j=0; a != NULL; a = a->a_next, j++ ) {
                AttributeDescription *desc = a->a_desc;
 
                if ( rs->sr_attrs == NULL ) {
-                       /* all attrs request, skip operational attributes */
+                       /* all user attrs request, skip operational attributes */
                        if( is_at_operational( desc->ad_type ) ) {
                                continue;
                        }
@@ -946,12 +1014,13 @@ slap_send_search_entry( Operation *op, SlapReply *rs )
                } else {
                        /* specific attrs requested */
                        if( is_at_operational( desc->ad_type ) ) {
-                               if( !opattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
+                               if ( !SLAP_OPATTRS( rs->sr_attr_flags ) && 
+                                       !ad_inlist( desc, rs->sr_attrs ) )
+                               {
                                        continue;
                                }
                        } else {
-                               if (!userattrs && !ad_inlist( desc, rs->sr_attrs ) )
-                               {
+                               if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
                                        continue;
                                }
                        }
@@ -960,275 +1029,231 @@ slap_send_search_entry( Operation *op, SlapReply *rs )
                if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
                        ACL_READ, &acl_state ) )
                {
-#ifdef NEW_LOGGING
-                       LDAP_LOG( ACL, INFO, 
+                       Debug( LDAP_DEBUG_ACL,
                                "send_search_entry: conn %lu "
                                "access to attribute %s not allowed\n",
                                op->o_connid, desc->ad_cname.bv_val, 0 );
-#else
-                       Debug( LDAP_DEBUG_ACL, "send_search_entry: access to attribute %s "
-                                       "not allowed\n",
-                                       desc->ad_cname.bv_val, 0, 0 );
-#endif
 
                        continue;
                }
 
                rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname );
                if ( rc == -1 ) {
-#ifdef NEW_LOGGING
-                       LDAP_LOG( OPERATION, ERR, 
+                       Debug( LDAP_DEBUG_ANY,
                                "send_search_entry: conn %lu  "
                                "ber_printf failed\n", op->o_connid, 0, 0 );
-#else
-                       Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
-#endif
-
-#ifdef LDAP_CONNECTIONLESS
-                       if (!op->o_conn || op->o_conn->c_is_udp == 0)
-#endif
-                       ber_free_buf( ber );
-                       send_ldap_error( op, rs, LDAP_OTHER, "encoding description error" );
 
-                       attrs_free( aa );
+                       if ( op->o_res_ber == NULL ) ber_free_buf( ber );
+                       send_ldap_error( op, rs, LDAP_OTHER,
+                               "encoding description error" );
+                       rc = rs->sr_err;
                        goto error_return;
                }
 
-               if ( ! op->ors_attrsonly ) {
+               if ( ! attrsonly ) {
                        for ( i = 0; a->a_vals[i].bv_val != NULL; i++ ) {
                                if ( ! access_allowed( op, rs->sr_entry,
                                        desc, &a->a_vals[i], ACL_READ, &acl_state ) )
                                {
-#ifdef NEW_LOGGING
-                                       LDAP_LOG( ACL, INFO, 
+                                       Debug( LDAP_DEBUG_ACL,
                                                "send_search_entry: conn %lu "
                                                "access to %s, value %d not allowed\n",
                                                op->o_connid, desc->ad_cname.bv_val, i );
-#else
-                                       Debug( LDAP_DEBUG_ACL,
-                                               "send_search_entry: access to attribute %s, "
-                                               "value %d not allowed\n",
-                                               desc->ad_cname.bv_val, i, 0 );
-#endif
 
                                        continue;
                                }
 
-                               if ( op->vrFilter && e_flags[j][i] == 0 ){
+                               if ( op->o_vrFilter && e_flags[j][i] == 0 ){
                                        continue;
                                }
 
                                if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
-#ifdef NEW_LOGGING
-                                       LDAP_LOG( OPERATION, ERR, 
+                                       Debug( LDAP_DEBUG_ANY,
                                                "send_search_entry: conn %lu  ber_printf failed\n", 
                                                op->o_connid, 0, 0 );
-#else
-                                       Debug( LDAP_DEBUG_ANY,
-                                           "ber_printf failed\n", 0, 0, 0 );
-#endif
 
-#ifdef LDAP_CONNECTIONLESS
-                                       if (!op->o_conn || op->o_conn->c_is_udp == 0)
-#endif
-                                       ber_free_buf( ber );
-                                       send_ldap_error( op, rs, LDAP_OTHER, "encoding values error" );
-                                       attrs_free( aa );
+                                       if ( op->o_res_ber == NULL ) ber_free_buf( ber );
+                                       send_ldap_error( op, rs, LDAP_OTHER,
+                                               "encoding values error" );
+                                       rc = rs->sr_err;
                                        goto error_return;
                                }
                        }
                }
 
                if (( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
-#ifdef NEW_LOGGING
-                       LDAP_LOG( OPERATION, ERR, 
+                       Debug( LDAP_DEBUG_ANY,
                                "send_search_entry: conn %lu  ber_printf failed\n",
                                op->o_connid, 0, 0 );
-#else
-                       Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
-#endif
 
-#ifdef LDAP_CONNECTIONLESS
-                       if (!op->o_conn || op->o_conn->c_is_udp == 0)
-#endif
-                       ber_free_buf( ber );
+                       if ( op->o_res_ber == NULL ) ber_free_buf( ber );
                        send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
-
-                       attrs_free( aa );
+                       rc = rs->sr_err;
                        goto error_return;
                }
        }
 
-#ifdef LDAP_SLAPI
-       /*
-        * First, setup the computed attribute context that is
-        * passed to all plugins.
-        */
-       ctx.cac_pb = op->o_pb;
-       ctx.cac_attrs = rs->sr_attrs;
-       ctx.cac_attrsonly = op->ors_attrsonly;
-       ctx.cac_userattrs = userattrs;
-       ctx.cac_opattrs = opattrs;
-       ctx.cac_acl_state = acl_state;
-       ctx.cac_private = (void *)ber;
-
-       /*
-        * For each client requested attribute, call the plugins.
-        */
-       if ( rs->sr_attrs != NULL ) {
-               for ( anp = rs->sr_attrs; anp->an_name.bv_val != NULL; anp++ ) {
-                       rc = compute_evaluator( &ctx, anp->an_name.bv_val, rs->sr_entry, slapi_x_compute_output_ber );
-                       if ( rc == 1 ) {
-                               break;
-                       }
-               }
-       } else {
-               /*
-                * Technically we shouldn't be returning operational attributes
-                * when the user requested only user attributes. We'll let the
-                * plugin decide whether to be naughty or not.
-                */
-               rc = compute_evaluator( &ctx, "*", rs->sr_entry, slapi_x_compute_output_ber );
-       }
-       if ( rc == 1 ) {
-               ber_free_buf( ber );
-               send_ldap_error( op, rs, LDAP_OTHER, "computed attribute error" );
-               goto error_return;
-       }
-#endif /* LDAP_SLAPI */
-
        /* free e_flags */
        if ( e_flags ) {
-               sl_free( e_flags, op->o_tmpmemctx );
+               slap_sl_free( e_flags, op->o_tmpmemctx );
                e_flags = NULL;
        }
 
-       attrs_free( aa );
        rc = ber_printf( ber, /*{{*/ "}N}" );
 
-       if( rc != -1 && rs->sr_ctrls != NULL ) {
-               rc = send_ldap_controls( ber, rs->sr_ctrls );
+       if( rc != -1 ) {
+               rc = send_ldap_controls( op, ber, rs->sr_ctrls );
        }
 
+       if( rc != -1 ) {
 #ifdef LDAP_CONNECTIONLESS
-       if( op->o_conn && op->o_conn->c_is_udp && op->o_protocol == LDAP_VERSION2 ) {
-               ; /* empty, skip following if */
-       } else
+               if( op->o_conn && op->o_conn->c_is_udp ) {
+                       if ( op->o_protocol != LDAP_VERSION2 ) {
+                               rc = ber_printf( ber, /*{*/ "N}" );
+                       }
+               } else
 #endif
-       if( rc != -1 ) {
-               rc = ber_printf( ber, /*{*/ "N}" );
+               if ( op->o_res_ber == NULL ) {
+                       rc = ber_printf( ber, /*{*/ "N}" );
+               }
        }
 
        if ( rc == -1 ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, ERR, 
-                       "send_search_entry: conn %lu ber_printf failed\n", 
-                       op->o_connid, 0, 0 );
-#else
                Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
-#endif
 
-#ifdef LDAP_CONNECTIONLESS
-               if (!op->o_conn || op->o_conn->c_is_udp == 0)
-#endif
-               ber_free_buf( ber );
+               if ( op->o_res_ber == NULL ) ber_free_buf( ber );
                send_ldap_error( op, rs, LDAP_OTHER, "encode entry end error" );
-               sl_release( mark, op->o_tmpmemctx );
-               return( 1 );
+               rc = rs->sr_err;
+               goto error_return;
        }
 
-#ifdef LDAP_CONNECTIONLESS
-       if (!op->o_conn || op->o_conn->c_is_udp == 0) {
-#endif
-       bytes = op->o_noop ? 0 : send_ldap_ber( op->o_conn, ber );
-       ber_free_buf( ber );
+       if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
+               be_entry_release_rw( op, rs->sr_entry, 0 );
+               rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
+               rs->sr_entry = NULL;
+       }
 
-       if ( bytes < 0 ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, ERR, 
-                          "send_search_entry: conn %lu  ber write failed.\n", 
-                          op->o_connid, 0, 0 );
-#else
-               Debug( LDAP_DEBUG_ANY,
-                       "send_search_entry: ber write failed\n",
-                       0, 0, 0 );
-#endif
+       if ( op->o_res_ber == NULL ) {
+               bytes = send_ldap_ber( op->o_conn, ber );
+               ber_free_buf( ber );
 
-               sl_release( mark, op->o_tmpmemctx );
-               return -1;
-       }
-       rs->sr_nentries++;
+               if ( bytes < 0 ) {
+                       Debug( LDAP_DEBUG_ANY,
+                               "send_search_entry: conn %lu  ber write failed.\n", 
+                               op->o_connid, 0, 0 );
 
-       ldap_pvt_thread_mutex_lock( &num_sent_mutex );
-       num_bytes_sent += bytes;
-       num_entries_sent++;
-       num_pdu_sent++;
-       ldap_pvt_thread_mutex_unlock( &num_sent_mutex );
+                       rc = LDAP_UNAVAILABLE;
+                       goto error_return;
+               }
+               rs->sr_nentries++;
 
-#ifdef LDAP_CONNECTIONLESS
+               ldap_pvt_thread_mutex_lock( &slap_counters.sc_sent_mutex );
+               ldap_pvt_mp_add_ulong( slap_counters.sc_bytes, (unsigned long)bytes );
+               ldap_pvt_mp_add_ulong( slap_counters.sc_entries, 1 );
+               ldap_pvt_mp_add_ulong( slap_counters.sc_pdu, 1 );
+               ldap_pvt_thread_mutex_unlock( &slap_counters.sc_sent_mutex );
        }
-#endif
 
-       Statslog( LDAP_DEBUG_STATS2, "conn=%lu op=%lu ENTRY dn=\"%s\"\n",
-           op->o_connid, op->o_opid, rs->sr_entry->e_dn, 0, 0 );
+       Statslog( LDAP_DEBUG_STATS2, "%s ENTRY dn=\"%s\"\n",
+           op->o_log_prefix, edn, 0, 0, 0 );
 
-#ifdef NEW_LOGGING
-       LDAP_LOG( OPERATION, ENTRY, 
-               "send_search_entry: conn %lu exit.\n", op->o_connid, 0, 0 );
-#else
-       Debug( LDAP_DEBUG_TRACE, "<= send_search_entry\n", 0, 0, 0 );
-#endif
+       Debug( LDAP_DEBUG_TRACE,
+               "<= send_search_entry: conn %lu exit.\n", op->o_connid, 0, 0 );
 
-       rc = 0;
+       rc = LDAP_SUCCESS;
 
 error_return:;
-       sl_release( mark, op->o_tmpmemctx );
-       if ( e_flags ) sl_free( e_flags, op->o_tmpmemctx );
+       if ( op->o_callback ) {
+               slap_callback   *sc = op->o_callback, **sc_prev = &sc, *sc_next;
+
+               for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
+                       sc_next = op->o_callback->sc_next;
+                       if ( op->o_callback->sc_cleanup ) {
+                               slap_callback *sc2 = op->o_callback;
+                               (void)op->o_callback->sc_cleanup( op, rs );
+                               if ( op->o_callback != sc2 ) {
+                                       *sc_prev = op->o_callback;
+                               }
+                               if ( !op->o_callback ) break;
+                               if ( op->o_callback != sc2 ) continue;
+                       }
+                       sc_prev = &op->o_callback->sc_next;
+               }
+               op->o_callback = sc;
+       }
+
+       if ( e_flags ) {
+               slap_sl_free( e_flags, op->o_tmpmemctx );
+       }
+
+       if ( rs->sr_operational_attrs ) {
+               attrs_free( rs->sr_operational_attrs );
+               rs->sr_operational_attrs = NULL;
+       }
+       rs->sr_attr_flags = SLAP_ATTRS_UNDEFINED;
+
+       /* FIXME: I think rs->sr_type should be explicitly set to
+        * REP_SEARCH here. That's what it was when we entered this
+        * function. send_ldap_error may have changed it, but we
+        * should set it back so that the cleanup functions know
+        * what they're doing.
+        */
+       if ( op->o_tag == LDAP_REQ_SEARCH && rs->sr_type == REP_SEARCH 
+               && rs->sr_entry 
+               && ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) ) 
+       {
+               entry_free( rs->sr_entry );
+               rs->sr_entry = NULL;
+               rs->sr_flags &= ~REP_ENTRY_MUSTBEFREED;
+       }
+
        return( rc );
 }
 
 int
 slap_send_search_reference( Operation *op, SlapReply *rs )
 {
-       char berbuf[LBER_ELEMENT_SIZEOF];
-       BerElement      *ber = (BerElement *)berbuf;
+       BerElementBuffer berbuf;
+       BerElement      *ber = (BerElement *) &berbuf;
        int rc = 0;
        int bytes;
-       void *mark;
 
        AttributeDescription *ad_ref = slap_schema.si_ad_ref;
        AttributeDescription *ad_entry = slap_schema.si_ad_entry;
 
        rs->sr_type = REP_SEARCHREF;
-       if (op->o_callback && op->o_callback->sc_response) {
-               return op->o_callback->sc_response( op, rs );
-       }
+       if ( op->o_callback ) {
+               slap_callback   *sc = op->o_callback, **sc_prev = &sc, *sc_next;
+
+               rc = SLAP_CB_CONTINUE;
+               for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
+                       sc_next = op->o_callback->sc_next;
+                       if ( op->o_callback->sc_response ) {
+                               slap_callback *sc2 = op->o_callback;
+                               rc = op->o_callback->sc_response( op, rs );
+                               if ( op->o_callback != sc2 ) {
+                                       *sc_prev = op->o_callback;
+                               }
+                               if ( rc != SLAP_CB_CONTINUE || !op->o_callback ) break;
+                               if ( op->o_callback != sc2 ) continue;
+                       }
+                       sc_prev = &op->o_callback->sc_next;
+               }
 
-       mark = sl_mark( op->o_tmpmemctx );
+               op->o_callback = sc;
+               if ( rc != SLAP_CB_CONTINUE ) goto rel;
+       }
 
-#ifdef NEW_LOGGING
-       LDAP_LOG( OPERATION, ENTRY, 
-               "send_search_reference: conn %lu  dn=\"%s\"\n", 
-               op->o_connid, rs->sr_entry ? rs->sr_entry->e_name.bv_val : "(null)", 0 );
-#else
        Debug( LDAP_DEBUG_TRACE,
                "=> send_search_reference: dn=\"%s\"\n",
                rs->sr_entry ? rs->sr_entry->e_name.bv_val : "(null)", 0, 0 );
-#endif
 
        if (  rs->sr_entry && ! access_allowed( op, rs->sr_entry,
                ad_entry, NULL, ACL_READ, NULL ) )
        {
-#ifdef NEW_LOGGING
-               LDAP_LOG( ACL, INFO, 
-                       "send_search_reference: conn %lu        "
-                       "access to entry %s not allowed\n",
-                       op->o_connid, rs->sr_entry->e_dn, 0 );
-#else
                Debug( LDAP_DEBUG_ACL,
                        "send_search_reference: access to entry not allowed\n",
                    0, 0, 0 );
-#endif
                rc = 1;
                goto rel;
        }
@@ -1236,64 +1261,44 @@ slap_send_search_reference( Operation *op, SlapReply *rs )
        if ( rs->sr_entry && ! access_allowed( op, rs->sr_entry,
                ad_ref, NULL, ACL_READ, NULL ) )
        {
-#ifdef NEW_LOGGING
-               LDAP_LOG( ACL, INFO, 
-                       "send_search_reference: conn %lu access "
-                       "to reference not allowed.\n", op->o_connid, 0, 0 );
-#else
                Debug( LDAP_DEBUG_ACL,
                        "send_search_reference: access "
                        "to reference not allowed\n",
                    0, 0, 0 );
-#endif
                rc = 1;
                goto rel;
        }
 
-#ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
        if( op->o_domain_scope ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, ERR, 
-                       "send_search_reference: conn %lu domainScope control in (%s).\n",
-                       op->o_connid, rs->sr_entry->e_dn, 0 );
-#else
                Debug( LDAP_DEBUG_ANY,
                        "send_search_reference: domainScope control in (%s)\n", 
                        rs->sr_entry->e_dn, 0, 0 );
-#endif
                rc = 0;
                goto rel;
        }
-#endif
 
        if( rs->sr_ref == NULL ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, ERR, 
-                       "send_search_reference: conn %lu null ref in (%s).\n",
-                       op->o_connid, rs->sr_entry ? rs->sr_entry->e_dn : "(null)", 0 );
-#else
                Debug( LDAP_DEBUG_ANY,
                        "send_search_reference: null ref in (%s)\n", 
                        rs->sr_entry ? rs->sr_entry->e_dn : "(null)", 0, 0 );
-#endif
                rc = 1;
                goto rel;
        }
 
        if( op->o_protocol < LDAP_VERSION3 ) {
+               rc = 0;
                /* save the references for the result */
                if( rs->sr_ref[0].bv_val != NULL ) {
                        if( value_add( &rs->sr_v2ref, rs->sr_ref ) )
-                               return LDAP_OTHER;
+                               rc = LDAP_OTHER;
                }
-               rc = 0;
                goto rel;
        }
 
 #ifdef LDAP_CONNECTIONLESS
-       if (op->o_conn && op->o_conn->c_is_udp)
+       if( op->o_conn && op->o_conn->c_is_udp ) {
                ber = op->o_res_ber;
-       else
+       else
 #endif
        {
                ber_init_w_nullc( ber, LBER_USE_DER );
@@ -1303,8 +1308,8 @@ slap_send_search_reference( Operation *op, SlapReply *rs )
        rc = ber_printf( ber, "{it{W}" /*"}"*/ , op->o_msgid,
                LDAP_RES_SEARCH_REFERENCE, rs->sr_ref );
 
-       if( rc != -1 && rs->sr_ctrls != NULL ) {
-               rc = send_ldap_controls( ber, rs->sr_ctrls );
+       if( rc != -1 ) {
+               rc = send_ldap_controls( op, ber, rs->sr_ctrls );
        }
 
        if( rc != -1 ) {
@@ -1312,14 +1317,8 @@ slap_send_search_reference( Operation *op, SlapReply *rs )
        }
 
        if ( rc == -1 ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, ERR, 
-                       "send_search_reference: conn %lu        "
-                       "ber_printf failed.\n", op->o_connid, 0, 0 );
-#else
                Debug( LDAP_DEBUG_ANY,
                        "send_search_reference: ber_printf failed\n", 0, 0, 0 );
-#endif
 
 #ifdef LDAP_CONNECTIONLESS
                if (!op->o_conn || op->o_conn->c_is_udp == 0)
@@ -1329,33 +1328,67 @@ slap_send_search_reference( Operation *op, SlapReply *rs )
                goto rel;
        }
 
+       rc = 0;
+       if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
+               be_entry_release_rw( op, rs->sr_entry, 0 );
+               rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
+               rs->sr_entry = NULL;
+       }
+
 #ifdef LDAP_CONNECTIONLESS
        if (!op->o_conn || op->o_conn->c_is_udp == 0) {
 #endif
-       bytes = op->o_noop ? 0 : send_ldap_ber( op->o_conn, ber );
+       bytes = send_ldap_ber( op->o_conn, ber );
        ber_free_buf( ber );
 
-       ldap_pvt_thread_mutex_lock( &num_sent_mutex );
-       num_bytes_sent += bytes;
-       num_refs_sent++;
-       num_pdu_sent++;
-       ldap_pvt_thread_mutex_unlock( &num_sent_mutex );
+       if ( bytes < 0 ) {
+               rc = LDAP_UNAVAILABLE;
+       } else {
+               ldap_pvt_thread_mutex_lock( &slap_counters.sc_sent_mutex );
+               ldap_pvt_mp_add_ulong( slap_counters.sc_bytes, (unsigned long)bytes );
+               ldap_pvt_mp_add_ulong( slap_counters.sc_refs, 1 );
+               ldap_pvt_mp_add_ulong( slap_counters.sc_pdu, 1 );
+               ldap_pvt_thread_mutex_unlock( &slap_counters.sc_sent_mutex );
+       }
 #ifdef LDAP_CONNECTIONLESS
        }
 #endif
+       if ( rs->sr_ref != NULL ) {
+               int     r;
+
+               for ( r = 0; !BER_BVISNULL( &rs->sr_ref[ r ] ); r++ ) {
+                       Statslog( LDAP_DEBUG_STATS2, "%s REF #%d \"%s\"\n",
+                               op->o_log_prefix, r, rs->sr_ref[0].bv_val,
+                               0, 0 );
+               }
 
-       Statslog( LDAP_DEBUG_STATS2, "conn=%lu op=%lu REF dn=\"%s\"\n",
-               op->o_connid, op->o_opid, rs->sr_entry ? rs->sr_entry->e_dn : "(null)", 0, 0 );
+       } else {
+               Statslog( LDAP_DEBUG_STATS2, "%s REF \"(null)\"\n",
+                       op->o_log_prefix, 0, 0, 0, 0 );
+       }
 
-#ifdef NEW_LOGGING
-       LDAP_LOG( OPERATION, ENTRY, 
-               "send_search_reference: conn %lu exit.\n", op->o_connid, 0, 0 );
-#else
        Debug( LDAP_DEBUG_TRACE, "<= send_search_reference\n", 0, 0, 0 );
-#endif
 
 rel:
-       sl_release( mark, op->o_tmpmemctx );
+       if ( op->o_callback ) {
+               slap_callback   *sc = op->o_callback, **sc_prev = &sc, *sc_next;
+
+               for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
+                       sc_next = op->o_callback->sc_next;
+                       if ( op->o_callback->sc_cleanup ) {
+                               slap_callback *sc2 = op->o_callback;
+                               (void)op->o_callback->sc_cleanup( op, rs );
+                               if ( op->o_callback != sc2 ) {
+                                       *sc_prev = op->o_callback;
+                               }
+                               if ( rc != SLAP_CB_CONTINUE || !op->o_callback ) break;
+                               if ( op->o_callback != sc2 ) continue;
+                       }
+                       sc_prev = &op->o_callback->sc_next;
+               }
+               op->o_callback = sc;
+       }
+
        return rc;
 }
 
@@ -1364,8 +1397,7 @@ str2result(
     char       *s,
     int                *code,
     char       **matched,
-    char       **info
-)
+    char       **info )
 {
        int     rc;
        char    *c;
@@ -1374,14 +1406,9 @@ str2result(
        *matched = NULL;
        *info = NULL;
 
-       if ( strncasecmp( s, "RESULT", 6 ) != 0 ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, INFO, 
-                       "str2result: (%s), expecting \"RESULT\"\n", s, 0, 0 );
-#else
+       if ( strncasecmp( s, "RESULT", STRLENOF( "RESULT" ) ) != 0 ) {
                Debug( LDAP_DEBUG_ANY, "str2result (%s) expecting \"RESULT\"\n",
                    s, 0, 0 );
-#endif
 
                return( -1 );
        }
@@ -1396,25 +1423,55 @@ str2result(
                        c++;
                }
 
-               if ( strncasecmp( s, "code", 4 ) == 0 ) {
-                       if ( c != NULL ) {
-                               *code = atoi( c );
+               if ( strncasecmp( s, "code", STRLENOF( "code" ) ) == 0 ) {
+                       char    *next = NULL;
+                       long    retcode;
+
+                       if ( c == NULL ) {
+                               Debug( LDAP_DEBUG_ANY, "str2result (%s) missing value\n",
+                                   s, 0, 0 );
+                               rc = -1;
+                               continue;
                        }
-               } else if ( strncasecmp( s, "matched", 7 ) == 0 ) {
+
+                       while ( isspace( (unsigned char) c[ 0 ] ) ) c++;
+                       if ( c[ 0 ] == '\0' ) {
+                               Debug( LDAP_DEBUG_ANY, "str2result (%s) missing or empty value\n",
+                                   s, 0, 0 );
+                               rc = -1;
+                               continue;
+                       }
+
+                       retcode = strtol( c, &next, 10 );
+                       if ( next == NULL || next == c ) {
+                               Debug( LDAP_DEBUG_ANY, "str2result (%s) unable to parse value\n",
+                                   s, 0, 0 );
+                               rc = -1;
+                               continue;
+                       }
+
+                       while ( isspace( (unsigned char) next[ 0 ] ) ) next++;
+                       if ( next[ 0 ] != '\0' ) {
+                               Debug( LDAP_DEBUG_ANY, "str2result (%s) extra cruft after value\n",
+                                   s, 0, 0 );
+                               rc = -1;
+                               continue;
+                       }
+
+                       /* FIXME: what if it's larger that max int? */
+                       *code = (int)retcode;
+
+               } else if ( strncasecmp( s, "matched", STRLENOF( "matched" ) ) == 0 ) {
                        if ( c != NULL ) {
                                *matched = c;
                        }
-               } else if ( strncasecmp( s, "info", 4 ) == 0 ) {
+               } else if ( strncasecmp( s, "info", STRLENOF( "info" ) ) == 0 ) {
                        if ( c != NULL ) {
                                *info = c;
                        }
                } else {
-#ifdef NEW_LOGGING
-                       LDAP_LOG( OPERATION, INFO, "str2result: (%s) unknown.\n", s, 0, 0 );
-#else
                        Debug( LDAP_DEBUG_ANY, "str2result (%s) unknown\n",
                            s, 0, 0 );
-#endif
 
                        rc = -1;
                }
@@ -1422,3 +1479,125 @@ str2result(
 
        return( rc );
 }
+
+int slap_read_controls(
+       Operation *op,
+       SlapReply *rs,
+       Entry *e,
+       const struct berval *oid,
+       LDAPControl **ctrl )
+{
+       int rc;
+       struct berval bv;
+       BerElementBuffer berbuf;
+       BerElement *ber = (BerElement *) &berbuf;
+       LDAPControl c;
+       Operation myop;
+
+       Debug( LDAP_DEBUG_ANY, "slap_read_controls: (%s) %s\n",
+               oid->bv_val, e->e_dn, 0 );
+
+       rs->sr_entry = e;
+       rs->sr_attrs = ( oid == &slap_pre_read_bv ) ?
+               op->o_preread_attrs : op->o_postread_attrs; 
+
+       bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
+       bv.bv_val = op->o_tmpalloc(bv.bv_len, op->o_tmpmemctx );
+
+       ber_init2( ber, &bv, LBER_USE_DER );
+       ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
+
+       /* create new operation */
+       myop = *op;
+       myop.o_bd = NULL;
+       myop.o_res_ber = ber;
+       myop.o_callback = NULL;
+       myop.ors_slimit = 1;
+
+       rc = slap_send_search_entry( &myop, rs );
+       if( rc ) return rc;
+
+       rc = ber_flatten2( ber, &c.ldctl_value, 0 );
+
+       if( rc == LBER_ERROR ) return LDAP_OTHER;
+
+       c.ldctl_oid = oid->bv_val;
+       c.ldctl_iscritical = 0;
+
+       if ( *ctrl == NULL ) {
+               /* first try */
+               *ctrl = (LDAPControl *) slap_sl_calloc( 1, sizeof(LDAPControl), NULL );
+       } else {
+               /* retry: free previous try */
+               slap_sl_free( (*ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
+       }
+
+       **ctrl = c;
+       return LDAP_SUCCESS;
+}
+
+/* Map API errors to protocol errors... */
+int
+slap_map_api2result( SlapReply *rs )
+{
+       switch(rs->sr_err) {
+       case LDAP_SERVER_DOWN:
+               return LDAP_UNAVAILABLE;
+       case LDAP_LOCAL_ERROR:
+               return LDAP_OTHER;
+       case LDAP_ENCODING_ERROR:
+       case LDAP_DECODING_ERROR:
+               return LDAP_PROTOCOL_ERROR;
+       case LDAP_TIMEOUT:
+               return LDAP_UNAVAILABLE;
+       case LDAP_AUTH_UNKNOWN:
+               return LDAP_AUTH_METHOD_NOT_SUPPORTED;
+       case LDAP_FILTER_ERROR:
+               rs->sr_text = "Filter error";
+               return LDAP_OTHER;
+       case LDAP_USER_CANCELLED:
+               rs->sr_text = "User cancelled";
+               return LDAP_OTHER;
+       case LDAP_PARAM_ERROR:
+               return LDAP_PROTOCOL_ERROR;
+       case LDAP_NO_MEMORY:
+               return LDAP_OTHER;
+       case LDAP_CONNECT_ERROR:
+               return LDAP_UNAVAILABLE;
+       case LDAP_NOT_SUPPORTED:
+               return LDAP_UNWILLING_TO_PERFORM;
+       case LDAP_CONTROL_NOT_FOUND:
+               return LDAP_PROTOCOL_ERROR;
+       case LDAP_NO_RESULTS_RETURNED:
+               return LDAP_NO_SUCH_OBJECT;
+       case LDAP_MORE_RESULTS_TO_RETURN:
+               rs->sr_text = "More results to return";
+               return LDAP_OTHER;
+       case LDAP_CLIENT_LOOP:
+       case LDAP_REFERRAL_LIMIT_EXCEEDED:
+               return LDAP_LOOP_DETECT;
+       default:
+               if ( LDAP_API_ERROR(rs->sr_err) ) return LDAP_OTHER;
+               return rs->sr_err;
+       }
+}
+
+
+slap_mask_t
+slap_attr_flags( AttributeName *an )
+{
+       slap_mask_t     flags = SLAP_ATTRS_UNDEFINED;
+
+       if ( an == NULL ) {
+               flags |= ( SLAP_OPATTRS_NO | SLAP_USERATTRS_YES );
+
+       } else {
+               flags |= an_find( an, &AllOper )
+                       ? SLAP_OPATTRS_YES : SLAP_OPATTRS_NO;
+               flags |= an_find( an, &AllUser )
+                       ? SLAP_USERATTRS_YES : SLAP_USERATTRS_NO;
+       }
+
+       return flags;
+}
+