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-rw-r--r--servers/slapd/back-monitor/search.c271
1 files changed, 271 insertions, 0 deletions
diff --git a/servers/slapd/back-monitor/search.c b/servers/slapd/back-monitor/search.c
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+++ b/servers/slapd/back-monitor/search.c
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+/* search.c - monitor backend search function */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2001-2021 The OpenLDAP Foundation.
+ * Portions Copyright 2001-2003 Pierangelo Masarati.
+ * 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 file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by Pierangelo Masarati for inclusion
+ * in OpenLDAP Software.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/string.h>
+#include <ac/socket.h>
+
+#include "slap.h"
+#include "back-monitor.h"
+#include "proto-back-monitor.h"
+
+static void
+monitor_find_children(
+ Operation *op,
+ SlapReply *rs,
+ Entry *e_parent,
+ Entry **nonv,
+ Entry **vol
+)
+{
+ monitor_entry_t *mp;
+
+ mp = ( monitor_entry_t * )e_parent->e_private;
+ *nonv = mp->mp_children;
+
+ if ( MONITOR_HAS_VOLATILE_CH( mp ) ) {
+ monitor_entry_create( op, rs, NULL, e_parent, vol );
+ }
+}
+
+static int
+monitor_send_children(
+ Operation *op,
+ SlapReply *rs,
+ Entry *e_nonvolatile,
+ Entry *e_ch,
+ int sub )
+{
+ monitor_info_t *mi = ( monitor_info_t * )op->o_bd->be_private;
+ Entry *e,
+ *e_tmp;
+ monitor_entry_t *mp;
+ int rc,
+ nonvolatile = 0;
+
+ e = e_nonvolatile;
+
+ /* no volatile entries? */
+ if ( e_ch == NULL ) {
+ /* no persistent entries? return */
+ if ( e == NULL ) {
+ return LDAP_SUCCESS;
+ }
+
+ /* volatile entries */
+ } else {
+ /* if no persistent, return only volatile */
+ if ( e == NULL ) {
+ e = e_ch;
+
+ /* else append persistent to volatile */
+ } else {
+ e_tmp = e_ch;
+ do {
+ mp = ( monitor_entry_t * )e_tmp->e_private;
+ e_tmp = mp->mp_next;
+
+ if ( e_tmp == NULL ) {
+ mp->mp_next = e;
+ break;
+ }
+ } while ( e_tmp );
+ e = e_ch;
+ }
+ }
+
+ /* return entries */
+ for ( ; e != NULL; e = e_tmp ) {
+ Entry *sub_nv = NULL, *sub_ch = NULL;
+
+ monitor_cache_lock( e );
+ monitor_entry_update( op, rs, e );
+
+ if ( e == e_nonvolatile )
+ nonvolatile = 1;
+
+ mp = ( monitor_entry_t * )e->e_private;
+ e_tmp = mp->mp_next;
+
+ if ( op->o_abandon ) {
+ monitor_cache_release( mi, e );
+ rc = SLAPD_ABANDON;
+ goto freeout;
+ }
+
+ if ( sub )
+ monitor_find_children( op, rs, e, &sub_nv, &sub_ch );
+
+ rc = test_filter( op, e, op->oq_search.rs_filter );
+ if ( rc == LDAP_COMPARE_TRUE ) {
+ rs->sr_entry = e;
+ rs->sr_flags = REP_ENTRY_MUSTRELEASE;
+ rc = send_search_entry( op, rs );
+ if ( rc ) {
+ for ( e = sub_ch; e != NULL; e = sub_nv ) {
+ mp = ( monitor_entry_t * )e->e_private;
+ sub_nv = mp->mp_next;
+ monitor_cache_lock( e );
+ monitor_cache_release( mi, e );
+ }
+ goto freeout;
+ }
+ } else {
+ monitor_cache_release( mi, e );
+ }
+
+ if ( sub ) {
+ rc = monitor_send_children( op, rs, sub_nv, sub_ch, sub );
+ if ( rc ) {
+freeout:
+ if ( nonvolatile == 0 ) {
+ for ( ; e_tmp != NULL; ) {
+ mp = ( monitor_entry_t * )e_tmp->e_private;
+ e = e_tmp;
+ e_tmp = mp->mp_next;
+ monitor_cache_lock( e );
+ monitor_cache_release( mi, e );
+
+ if ( e_tmp == e_nonvolatile ) {
+ break;
+ }
+ }
+ }
+
+ return( rc );
+ }
+ }
+ }
+
+ return LDAP_SUCCESS;
+}
+
+int
+monitor_back_search( Operation *op, SlapReply *rs )
+{
+ monitor_info_t *mi = ( monitor_info_t * )op->o_bd->be_private;
+ int rc = LDAP_SUCCESS;
+ Entry *e = NULL, *matched = NULL;
+ Entry *e_nv = NULL, *e_ch = NULL;
+ slap_mask_t mask;
+
+ Debug( LDAP_DEBUG_TRACE, "=> monitor_back_search\n", 0, 0, 0 );
+
+
+ /* get entry with reader lock */
+ monitor_cache_dn2entry( op, rs, &op->o_req_ndn, &e, &matched );
+ if ( e == NULL ) {
+ rs->sr_err = LDAP_NO_SUCH_OBJECT;
+ if ( matched ) {
+ if ( !access_allowed_mask( op, matched,
+ slap_schema.si_ad_entry,
+ NULL, ACL_DISCLOSE, NULL, NULL ) )
+ {
+ /* do nothing */ ;
+ } else {
+ rs->sr_matched = matched->e_dn;
+ }
+ }
+
+ send_ldap_result( op, rs );
+ if ( matched ) {
+ monitor_cache_release( mi, matched );
+ rs->sr_matched = NULL;
+ }
+
+ return rs->sr_err;
+ }
+
+ /* 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 ) )
+ {
+ monitor_cache_release( mi, e );
+
+ 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 );
+
+ return rs->sr_err;
+ }
+
+ rs->sr_attrs = op->oq_search.rs_attrs;
+ switch ( op->oq_search.rs_scope ) {
+ case LDAP_SCOPE_BASE:
+ monitor_entry_update( op, rs, e );
+ rc = test_filter( op, e, op->oq_search.rs_filter );
+ if ( rc == LDAP_COMPARE_TRUE ) {
+ rs->sr_entry = e;
+ rs->sr_flags = REP_ENTRY_MUSTRELEASE;
+ send_search_entry( op, rs );
+ rs->sr_entry = NULL;
+ } else {
+ monitor_cache_release( mi, e );
+ }
+ rc = LDAP_SUCCESS;
+ break;
+
+ case LDAP_SCOPE_ONELEVEL:
+ case LDAP_SCOPE_SUBORDINATE:
+ monitor_find_children( op, rs, e, &e_nv, &e_ch );
+ monitor_cache_release( mi, e );
+ rc = monitor_send_children( op, rs, e_nv, e_ch,
+ op->oq_search.rs_scope == LDAP_SCOPE_SUBORDINATE );
+ break;
+
+ case LDAP_SCOPE_SUBTREE:
+ monitor_entry_update( op, rs, e );
+ monitor_find_children( op, rs, e, &e_nv, &e_ch );
+ rc = test_filter( op, e, op->oq_search.rs_filter );
+ if ( rc == LDAP_COMPARE_TRUE ) {
+ rs->sr_entry = e;
+ rs->sr_flags = REP_ENTRY_MUSTRELEASE;
+ send_search_entry( op, rs );
+ rs->sr_entry = NULL;
+ } else {
+ monitor_cache_release( mi, e );
+ }
+
+ rc = monitor_send_children( op, rs, e_nv, e_ch, 1 );
+ break;
+
+ default:
+ rc = LDAP_UNWILLING_TO_PERFORM;
+ monitor_cache_release( mi, e );
+ }
+
+ rs->sr_attrs = NULL;
+ rs->sr_err = rc;
+ if ( rs->sr_err != SLAPD_ABANDON ) {
+ send_ldap_result( op, rs );
+ }
+
+ return rs->sr_err;
+}
+