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-rw-r--r--servers/slapd/back-wt/search.c759
1 files changed, 759 insertions, 0 deletions
diff --git a/servers/slapd/back-wt/search.c b/servers/slapd/back-wt/search.c
new file mode 100644
index 0000000..8a313b3
--- /dev/null
+++ b/servers/slapd/back-wt/search.c
@@ -0,0 +1,759 @@
+/* OpenLDAP WiredTiger backend */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2002-2022 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>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was developed by HAMANO Tsukasa <hamano@osstech.co.jp>
+ * based on back-bdb for inclusion in OpenLDAP Software.
+ * WiredTiger is a product of MongoDB Inc.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+#include <ac/string.h>
+
+#include "back-wt.h"
+#include "idl.h"
+
+static int search_aliases(
+ Operation *op,
+ SlapReply *rs,
+ Entry *e,
+ WT_SESSION *session,
+ ID *ids,
+ ID *scopes,
+ ID *stack )
+{
+ /* TODO: search_aliases does not implement yet. */
+ WT_IDL_ZERO( ids );
+ return 0;
+}
+
+static int base_candidate(
+ BackendDB *be,
+ Entry *e,
+ ID *ids )
+{
+ Debug(LDAP_DEBUG_ARGS,
+ "base_candidate: base: \"%s\" (0x%08lx)\n",
+ e->e_nname.bv_val, (long) e->e_id );
+
+ ids[0] = 1;
+ ids[1] = e->e_id;
+ return 0;
+}
+
+/* Look for "objectClass Present" in this filter.
+ * Also count depth of filter tree while we're at it.
+ */
+static int oc_filter(
+ Filter *f,
+ int cur,
+ int *max )
+{
+ int rc = 0;
+
+ assert( f != NULL );
+
+ if( cur > *max ) *max = cur;
+
+ switch( f->f_choice ) {
+ case LDAP_FILTER_PRESENT:
+ if (f->f_desc == slap_schema.si_ad_objectClass) {
+ rc = 1;
+ }
+ break;
+
+ case LDAP_FILTER_AND:
+ case LDAP_FILTER_OR:
+ cur++;
+ for ( f=f->f_and; f; f=f->f_next ) {
+ (void) oc_filter(f, cur, max);
+ }
+ break;
+
+ default:
+ break;
+ }
+ return rc;
+}
+
+static void search_stack_free( void *key, void *data )
+{
+ ber_memfree_x(data, NULL);
+}
+
+static void *search_stack( Operation *op )
+{
+ struct wt_info *wi = (struct wt_info *) op->o_bd->be_private;
+ void *ret = NULL;
+
+ if ( op->o_threadctx ) {
+ ldap_pvt_thread_pool_getkey( op->o_threadctx, (void *)search_stack,
+ &ret, NULL );
+ } else {
+ ret = wi->wi_search_stack;
+ }
+
+ if ( !ret ) {
+ ret = ch_malloc( wi->wi_search_stack_depth * WT_IDL_UM_SIZE
+ * sizeof( ID ) );
+ if ( op->o_threadctx ) {
+ ldap_pvt_thread_pool_setkey( op->o_threadctx, (void *)search_stack,
+ ret, search_stack_free, NULL, NULL );
+ } else {
+ wi->wi_search_stack = ret;
+ }
+ }
+ return ret;
+}
+
+static int search_candidates(
+ Operation *op,
+ SlapReply *rs,
+ Entry *e,
+ wt_ctx *wc,
+ ID *ids,
+ ID *scopes )
+{
+ struct wt_info *wi = (struct wt_info *) op->o_bd->be_private;
+ int rc, depth = 1;
+ Filter f, rf, xf, nf;
+ ID *stack;
+ AttributeAssertion aa_ref = ATTRIBUTEASSERTION_INIT;
+ Filter sf;
+ AttributeAssertion aa_subentry = ATTRIBUTEASSERTION_INIT;
+
+ Debug(LDAP_DEBUG_TRACE,
+ "wt_search_candidates: base=\"%s\" (0x%08lx) scope=%d\n",
+ e->e_nname.bv_val, (long) e->e_id, op->oq_search.rs_scope );
+
+ xf.f_or = op->oq_search.rs_filter;
+ xf.f_choice = LDAP_FILTER_OR;
+ xf.f_next = NULL;
+
+ /* If the user's filter uses objectClass=*,
+ * these clauses are redundant.
+ */
+ if (!oc_filter(op->oq_search.rs_filter, 1, &depth)
+ && !get_subentries_visibility(op)) {
+ if( !get_manageDSAit(op) && !get_domainScope(op) ) {
+ /* match referral objects */
+ struct berval bv_ref = BER_BVC( "referral" );
+ rf.f_choice = LDAP_FILTER_EQUALITY;
+ rf.f_ava = &aa_ref;
+ rf.f_av_desc = slap_schema.si_ad_objectClass;
+ rf.f_av_value = bv_ref;
+ rf.f_next = xf.f_or;
+ xf.f_or = &rf;
+ depth++;
+ }
+ }
+
+ f.f_next = NULL;
+ f.f_choice = LDAP_FILTER_AND;
+ f.f_and = &nf;
+ /* Dummy; we compute scope separately now */
+ nf.f_choice = SLAPD_FILTER_COMPUTED;
+ nf.f_result = LDAP_SUCCESS;
+ nf.f_next = ( xf.f_or == op->oq_search.rs_filter )
+ ? op->oq_search.rs_filter : &xf ;
+ /* Filter depth increased again, adding dummy clause */
+ depth++;
+
+ if( get_subentries_visibility( op ) ) {
+ struct berval bv_subentry = BER_BVC( "subentry" );
+ sf.f_choice = LDAP_FILTER_EQUALITY;
+ sf.f_ava = &aa_subentry;
+ sf.f_av_desc = slap_schema.si_ad_objectClass;
+ sf.f_av_value = bv_subentry;
+ sf.f_next = nf.f_next;
+ nf.f_next = &sf;
+ }
+
+ /* Allocate IDL stack, plus 1 more for former tmp */
+ if ( depth+1 > wi->wi_search_stack_depth ) {
+ stack = ch_malloc( (depth + 1) * WT_IDL_UM_SIZE * sizeof( ID ) );
+ } else {
+ stack = search_stack( op );
+ }
+
+ if( op->ors_deref & LDAP_DEREF_SEARCHING ) {
+ rc = search_aliases( op, rs, e, wc->session, ids, scopes, stack );
+ if ( WT_IDL_IS_ZERO( ids ) && rc == LDAP_SUCCESS )
+ rc = wt_dn2idl( op, wc, &e->e_nname, e, ids, stack );
+ } else {
+ rc = wt_dn2idl(op, wc, &e->e_nname, e, ids, stack );
+ }
+
+ if ( rc == LDAP_SUCCESS ) {
+ rc = wt_filter_candidates( op, wc, &f, ids,
+ stack, stack+WT_IDL_UM_SIZE );
+ }
+
+ if ( depth+1 > wi->wi_search_stack_depth ) {
+ ch_free( stack );
+ }
+
+ if( rc ) {
+ Debug(LDAP_DEBUG_TRACE,
+ "wt_search_candidates: failed (rc=%d)\n", rc );
+
+ } else {
+ Debug(LDAP_DEBUG_TRACE,
+ "wt_search_candidates: id=%ld first=%ld last=%ld\n",
+ (long) ids[0],
+ (long) WT_IDL_FIRST(ids),
+ (long) WT_IDL_LAST(ids));
+ }
+ return 0;
+}
+
+static int
+parse_paged_cookie( Operation *op, SlapReply *rs )
+{
+ int rc = LDAP_SUCCESS;
+ PagedResultsState *ps = op->o_pagedresults_state;
+
+ /* this function must be invoked only if the pagedResults
+ * control has been detected, parsed and partially checked
+ * by the frontend */
+ assert( get_pagedresults( op ) > SLAP_CONTROL_IGNORED );
+
+ /* cookie decoding/checks deferred to backend... */
+ if ( ps->ps_cookieval.bv_len ) {
+ PagedResultsCookie reqcookie;
+ if( ps->ps_cookieval.bv_len != sizeof( reqcookie ) ) {
+ /* bad cookie */
+ rs->sr_text = "paged results cookie is invalid";
+ rc = LDAP_PROTOCOL_ERROR;
+ goto done;
+ }
+
+ memcpy( &reqcookie, ps->ps_cookieval.bv_val, sizeof( reqcookie ));
+
+ if ( reqcookie > ps->ps_cookie ) {
+ /* bad cookie */
+ rs->sr_text = "paged results cookie is invalid";
+ rc = LDAP_PROTOCOL_ERROR;
+ goto done;
+
+ } else if ( reqcookie < ps->ps_cookie ) {
+ rs->sr_text = "paged results cookie is invalid or old";
+ rc = LDAP_UNWILLING_TO_PERFORM;
+ goto done;
+ }
+
+ } else {
+ /* we're going to use ps_cookie */
+ op->o_conn->c_pagedresults_state.ps_cookie = 0;
+ }
+
+done:;
+
+ return rc;
+}
+
+static void
+send_paged_response(
+ Operation *op,
+ SlapReply *rs,
+ ID *lastid,
+ int tentries )
+{
+ LDAPControl *ctrls[2];
+ BerElementBuffer berbuf;
+ BerElement *ber = (BerElement *)&berbuf;
+ PagedResultsCookie respcookie;
+ struct berval cookie;
+
+ Debug(LDAP_DEBUG_ARGS,
+ "send_paged_response: lastid=0x%08lx nentries=%d\n",
+ lastid ? *lastid : 0, rs->sr_nentries );
+
+ ctrls[1] = NULL;
+
+ ber_init2( ber, NULL, LBER_USE_DER );
+
+ if ( lastid ) {
+ respcookie = ( PagedResultsCookie )(*lastid);
+ cookie.bv_len = sizeof( respcookie );
+ cookie.bv_val = (char *)&respcookie;
+
+ } else {
+ respcookie = ( PagedResultsCookie )0;
+ BER_BVSTR( &cookie, "" );
+ }
+
+ op->o_conn->c_pagedresults_state.ps_cookie = respcookie;
+ op->o_conn->c_pagedresults_state.ps_count =
+ ((PagedResultsState *)op->o_pagedresults_state)->ps_count +
+ rs->sr_nentries;
+
+ /* return size of 0 -- no estimate */
+ ber_printf( ber, "{iO}", 0, &cookie );
+
+ ctrls[0] = op->o_tmpalloc( sizeof(LDAPControl), op->o_tmpmemctx );
+ if ( ber_flatten2( ber, &ctrls[0]->ldctl_value, 0 ) == -1 ) {
+ goto done;
+ }
+
+ ctrls[0]->ldctl_oid = LDAP_CONTROL_PAGEDRESULTS;
+ ctrls[0]->ldctl_iscritical = 0;
+
+ slap_add_ctrls( op, rs, ctrls );
+ rs->sr_err = LDAP_SUCCESS;
+ send_ldap_result( op, rs );
+
+done:
+ (void) ber_free_buf( ber );
+}
+
+int
+wt_search( Operation *op, SlapReply *rs )
+{
+ struct wt_info *wi = (struct wt_info *) op->o_bd->be_private;
+ ID id, cursor;
+ ID lastid = NOID;
+ int manageDSAit;
+ wt_ctx *wc;
+ int rc = LDAP_OTHER;
+ Entry *e = NULL;
+ Entry *ae = NULL;
+ Entry *base = NULL;
+ slap_mask_t mask;
+ time_t stoptime;
+
+ ID candidates[WT_IDL_UM_SIZE];
+ ID scopes[WT_IDL_DB_SIZE];
+ int tentries = 0;
+ unsigned nentries = 0;
+
+ Debug( LDAP_DEBUG_ARGS, "==> wt_search: %s\n", op->o_req_dn.bv_val );
+
+ manageDSAit = get_manageDSAit( op );
+
+ wc = wt_ctx_get(op, wi);
+ if( !wc ){
+ Debug( LDAP_DEBUG_ANY,
+ "wt_search: wt_ctx_get failed: %d\n", rc );
+ send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
+ return rc;
+ }
+
+ /* get entry */
+ rc = wt_dn2entry(op->o_bd, wc, &op->o_req_ndn, &e);
+ switch( rc ) {
+ case 0:
+ break;
+ case WT_NOTFOUND:
+ rc = wt_dn2aentry(op->o_bd, wc, &op->o_req_ndn, &ae);
+ break;
+ default:
+ /* TODO: error handling */
+ Debug( LDAP_DEBUG_ANY,
+ "<== wt_search: error at wt_dn2entry() rc=%d\n", rc );
+ send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
+ goto done;
+ }
+
+ if ( op->ors_deref & LDAP_DEREF_FINDING ) {
+ /* not implement yet */
+ }
+
+ if ( e == NULL ) {
+ if ( ae ) {
+ struct berval matched_dn = BER_BVNULL;
+ /* found ancestor entry */
+ if ( access_allowed( op, ae,
+ slap_schema.si_ad_entry,
+ NULL, ACL_DISCLOSE, NULL ) ) {
+ BerVarray erefs = NULL;
+ ber_dupbv( &matched_dn, &ae->e_name );
+ erefs = is_entry_referral( ae )
+ ? get_entry_referrals( op, ae )
+ : NULL;
+ rs->sr_err = LDAP_REFERRAL;
+ rs->sr_matched = matched_dn.bv_val;
+ if ( erefs ) {
+ rs->sr_ref = referral_rewrite( erefs, &matched_dn,
+ &op->o_req_dn, op->oq_search.rs_scope );
+ ber_bvarray_free( erefs );
+ }
+ Debug( LDAP_DEBUG_ARGS,
+ "wt_search: ancestor is referral\n");
+ rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
+ send_ldap_result( op, rs );
+ goto done;
+ }
+ }
+ Debug( LDAP_DEBUG_ARGS,
+ "wt_search: no such object %s\n",
+ op->o_req_dn.bv_val);
+ rs->sr_err = LDAP_NO_SUCH_OBJECT;
+ send_ldap_result( op, rs );
+ goto done;
+ }
+
+ /* NOTE: __NEW__ "search" access is required
+ * on searchBase object */
+ if ( ! access_allowed_mask( op, e, slap_schema.si_ad_entry,
+ NULL, ACL_SEARCH, NULL, &mask ) )
+ {
+ if ( !ACL_GRANT( mask, ACL_DISCLOSE ) ) {
+ rs->sr_err = LDAP_NO_SUCH_OBJECT;
+ } else {
+ rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
+ }
+
+ send_ldap_result( op, rs );
+ goto done;
+ }
+
+ if ( !manageDSAit && is_entry_referral( e ) ) {
+ struct berval matched_dn = BER_BVNULL;
+ BerVarray erefs = NULL;
+ ber_dupbv( &matched_dn, &e->e_name );
+ erefs = get_entry_referrals( op, e );
+ rs->sr_err = LDAP_REFERRAL;
+ if ( erefs ) {
+ rs->sr_ref = referral_rewrite( erefs, &matched_dn,
+ &op->o_req_dn, op->oq_search.rs_scope );
+ ber_bvarray_free( erefs );
+ if ( !rs->sr_ref ) {
+ rs->sr_text = "bad_referral object";
+ }
+ }
+ Debug( LDAP_DEBUG_ARGS, "wt_search: entry is referral\n");
+ rs->sr_matched = matched_dn.bv_val;
+ send_ldap_result( op, rs );
+ ber_bvarray_free( rs->sr_ref );
+ rs->sr_ref = NULL;
+ ber_memfree( matched_dn.bv_val );
+ rs->sr_matched = NULL;
+ goto done;
+ }
+
+ if ( get_assert( op ) &&
+ ( test_filter( op, e, get_assertion( op )) != LDAP_COMPARE_TRUE ))
+ {
+ rs->sr_err = LDAP_ASSERTION_FAILED;
+ send_ldap_result( op, rs );
+ goto done;
+ }
+
+ /* compute it anyway; root does not use it */
+ stoptime = op->o_time + op->ors_tlimit;
+
+ base = e;
+
+ e = NULL;
+
+ /* select candidates */
+ if ( op->oq_search.rs_scope == LDAP_SCOPE_BASE ) {
+ rs->sr_err = base_candidate( op->o_bd, base, candidates );
+ }else{
+ WT_IDL_ZERO( candidates );
+ WT_IDL_ZERO( scopes );
+ rc = search_candidates( op, rs, base,
+ wc, candidates, scopes );
+ switch(rc){
+ case 0:
+ case WT_NOTFOUND:
+ break;
+ default:
+ Debug( LDAP_DEBUG_ANY, "wt_search: error search_candidates\n" );
+ send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
+ goto done;
+ }
+ }
+
+ /* start cursor at beginning of candidates.
+ */
+ cursor = 0;
+
+ if ( candidates[0] == 0 ) {
+ Debug( LDAP_DEBUG_TRACE, "wt_search: no candidates\n" );
+ goto nochange;
+ }
+
+ if ( op->ors_limit &&
+ op->ors_limit->lms_s_unchecked != -1 &&
+ WT_IDL_N(candidates) > (unsigned) op->ors_limit->lms_s_unchecked )
+ {
+ rs->sr_err = LDAP_ADMINLIMIT_EXCEEDED;
+ send_ldap_result( op, rs );
+ rs->sr_err = LDAP_SUCCESS;
+ goto done;
+ }
+
+ if ( op->ors_limit == NULL /* isroot == TRUE */ ||
+ !op->ors_limit->lms_s_pr_hide )
+ {
+ tentries = WT_IDL_N(candidates);
+ }
+
+ if ( get_pagedresults( op ) > SLAP_CONTROL_IGNORED ) {
+ /* TODO: pageresult */
+ PagedResultsState *ps = op->o_pagedresults_state;
+ /* deferred cookie parsing */
+ rs->sr_err = parse_paged_cookie( op, rs );
+ if ( rs->sr_err != LDAP_SUCCESS ) {
+ send_ldap_result( op, rs );
+ goto done;
+ }
+
+ cursor = (ID) ps->ps_cookie;
+ if ( cursor && ps->ps_size == 0 ) {
+ rs->sr_err = LDAP_SUCCESS;
+ rs->sr_text = "search abandoned by pagedResult size=0";
+ send_ldap_result( op, rs );
+ goto done;
+ }
+ id = wt_idl_first( candidates, &cursor );
+ if ( id == NOID ) {
+ Debug( LDAP_DEBUG_TRACE, "wt_search: no paged results candidates\n" );
+ send_paged_response( op, rs, &lastid, 0 );
+
+ rs->sr_err = LDAP_OTHER;
+ goto done;
+ }
+ nentries = ps->ps_count;
+ if ( id == (ID)ps->ps_cookie )
+ id = wt_idl_next( candidates, &cursor );
+ goto loop_begin;
+ }
+
+ for ( id = wt_idl_first( candidates, &cursor );
+ id != NOID ; id = wt_idl_next( candidates, &cursor ) )
+ {
+ int scopeok;
+
+loop_begin:
+
+ /* check for abandon */
+ if ( op->o_abandon ) {
+ rs->sr_err = SLAPD_ABANDON;
+ send_ldap_result( op, rs );
+ goto done;
+ }
+
+ /* mostly needed by internal searches,
+ * e.g. related to syncrepl, for whom
+ * abandon does not get set... */
+ if ( slapd_shutdown ) {
+ rs->sr_err = LDAP_UNAVAILABLE;
+ send_ldap_disconnect( op, rs );
+ goto done;
+ }
+
+ /* check time limit */
+ if ( op->ors_tlimit != SLAP_NO_LIMIT
+ && slap_get_time() > stoptime )
+ {
+ rs->sr_err = LDAP_TIMELIMIT_EXCEEDED;
+ rs->sr_ref = rs->sr_v2ref;
+ send_ldap_result( op, rs );
+ rs->sr_err = LDAP_SUCCESS;
+ goto done;
+ }
+
+ nentries++;
+
+ fetch_entry_retry:
+
+ rc = wt_id2entry(op->o_bd, wc, id, &e);
+ /* TODO: error handling */
+ if ( e == NULL ) {
+ /* TODO: */
+ goto loop_continue;
+ }
+ if ( is_entry_subentry( e ) ) {
+ if( op->oq_search.rs_scope != LDAP_SCOPE_BASE ) {
+ if(!get_subentries_visibility( op )) {
+ /* only subentries are visible */
+ goto loop_continue;
+ }
+
+ } else if ( get_subentries( op ) &&
+ !get_subentries_visibility( op ))
+ {
+ /* only subentries are visible */
+ goto loop_continue;
+ }
+
+ } else if ( get_subentries_visibility( op )) {
+ /* only subentries are visible */
+ goto loop_continue;
+ }
+
+ scopeok = 0;
+ switch( op->ors_scope ) {
+ case LDAP_SCOPE_BASE:
+ /* This is always true, yes? */
+ if ( id == base->e_id ) scopeok = 1;
+ break;
+ case LDAP_SCOPE_ONELEVEL:
+ scopeok = 1;
+ break;
+ case LDAP_SCOPE_CHILDREN:
+ if ( id == base->e_id ) break;
+ /* Fall-thru */
+ case LDAP_SCOPE_SUBTREE:
+ scopeok = dnIsSuffix(&e->e_nname, &base->e_nname);
+ break;
+ }
+
+ /* aliases were already dereferenced in candidate list */
+ if ( op->ors_deref & LDAP_DEREF_SEARCHING ) {
+ /* but if the search base is an alias, and we didn't
+ * deref it when finding, return it.
+ */
+ if ( is_entry_alias(e) &&
+ ((op->ors_deref & LDAP_DEREF_FINDING) ||
+ !bvmatch(&e->e_nname, &op->o_req_ndn)))
+ {
+ goto loop_continue;
+ }
+ /* TODO: alias handling */
+ }
+
+ /* Not in scope, ignore it */
+ if ( !scopeok )
+ {
+ Debug( LDAP_DEBUG_TRACE, "wt_search: %ld scope not okay\n",
+ (long) id );
+ goto loop_continue;
+ }
+
+ /*
+ * if it's a referral, add it to the list of referrals. only do
+ * this for non-base searches, and don't check the filter
+ * explicitly here since it's only a candidate anyway.
+ */
+ if ( !manageDSAit && op->oq_search.rs_scope != LDAP_SCOPE_BASE
+ && is_entry_referral( e ) )
+ {
+ BerVarray erefs = get_entry_referrals( op, e );
+ rs->sr_ref = referral_rewrite( erefs, &e->e_name, NULL,
+ op->oq_search.rs_scope == LDAP_SCOPE_ONELEVEL
+ ? LDAP_SCOPE_BASE : LDAP_SCOPE_SUBTREE );
+ rs->sr_entry = e;
+ send_search_reference( op, rs );
+ rs->sr_entry = NULL;
+ ber_bvarray_free( rs->sr_ref );
+ ber_bvarray_free( erefs );
+ goto loop_continue;
+ }
+
+ if ( !manageDSAit && is_entry_glue( e )) {
+ goto loop_continue;
+ }
+
+ /* if it matches the filter and scope, send it */
+ rs->sr_err = test_filter( op, e, op->oq_search.rs_filter );
+ if ( rs->sr_err == LDAP_COMPARE_TRUE ) {
+ /* check size limit */
+ if ( get_pagedresults(op) > SLAP_CONTROL_IGNORED ) {
+ if ( rs->sr_nentries >= ((PagedResultsState *)op->o_pagedresults_state)->ps_size ) {
+ wt_entry_return( e );
+ e = NULL;
+ send_paged_response( op, rs, &lastid, tentries );
+ goto done;
+ }
+ lastid = id;
+ }
+
+ if (e) {
+ /* safe default */
+ rs->sr_attrs = op->oq_search.rs_attrs;
+ rs->sr_operational_attrs = NULL;
+ rs->sr_ctrls = NULL;
+ rs->sr_entry = e;
+ RS_ASSERT( e->e_private != NULL );
+ rs->sr_flags = REP_ENTRY_MUSTRELEASE;
+ rs->sr_err = LDAP_SUCCESS;
+ rs->sr_err = send_search_entry( op, rs );
+ rs->sr_attrs = NULL;
+ rs->sr_entry = NULL;
+ e = NULL;
+
+ switch ( rs->sr_err ) {
+ case LDAP_SUCCESS: /* entry sent ok */
+ break;
+ default: /* entry not sent */
+ break;
+ case LDAP_BUSY:
+ send_ldap_result( op, rs );
+ goto done;
+ case LDAP_UNAVAILABLE:
+ rs->sr_err = LDAP_OTHER;
+ goto done;
+ case LDAP_SIZELIMIT_EXCEEDED:
+ rs->sr_ref = rs->sr_v2ref;
+ send_ldap_result( op, rs );
+ rs->sr_err = LDAP_SUCCESS;
+ goto done;
+ }
+ }
+ } else {
+ Debug( LDAP_DEBUG_TRACE,
+ "wt_search: %ld does not match filter\n", (long) id );
+ }
+
+ loop_continue:
+ if( e ) {
+ wt_entry_return( e );
+ e = NULL;
+ }
+ }
+
+nochange:
+ rs->sr_ctrls = NULL;
+ rs->sr_ref = rs->sr_v2ref;
+ rs->sr_err = (rs->sr_v2ref == NULL) ? LDAP_SUCCESS : LDAP_REFERRAL;
+ rs->sr_rspoid = NULL;
+ if ( get_pagedresults(op) > SLAP_CONTROL_IGNORED ) {
+ send_paged_response( op, rs, NULL, 0 );
+ } else {
+ send_ldap_result( op, rs );
+ }
+
+ rs->sr_err = LDAP_SUCCESS;
+
+done:
+
+ if( base ) {
+ wt_entry_return( base );
+ }
+
+ if( e ) {
+ wt_entry_return( e );
+ }
+
+ if( ae ) {
+ wt_entry_return( ae );
+ }
+
+ return rs->sr_err;
+}
+
+/*
+ * Local variables:
+ * indent-tabs-mode: t
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ */