openldap/servers/slapd/back-monitor/search.c
Quanah Gibson-Mount 1705fa7e55 Happy New Year
2015-02-11 15:36:57 -06:00

272 lines
5.8 KiB
C

/* search.c - monitor backend search function */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 2001-2015 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;
}