git.sur5r.net Git - openldap/blob - servers/slapd/back-monitor/search.c

   1 /* search.c - monitor backend search function */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2001-2004 The OpenLDAP Foundation.
   6  * Portions Copyright 2001-2003 Pierangelo Masarati.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted only as authorized by the OpenLDAP
  11  * Public License.
  12  *
  13  * A copy of this license is available in file LICENSE in the
  14  * top-level directory of the distribution or, alternatively, at
  15  * <http://www.OpenLDAP.org/license.html>.
  16  */
  17 /* ACKNOWLEDGEMENTS:
  18  * This work was initially developed by Pierangelo Masarati for inclusion
  19  * in OpenLDAP Software.
  20  */
  21
  22 #include "portable.h"
  23
  24 #include <stdio.h>
  25
  26 #include <ac/string.h>
  27 #include <ac/socket.h>
  28
  29 #include "slap.h"
  30 #include "back-monitor.h"
  31 #include "proto-back-monitor.h"
  32
  33 static int
  34 monitor_send_children(
  35         Operation       *op,
  36         SlapReply       *rs,
  37         Entry           *e_parent,
  38         int             sub
  39 )
  40 {
  41         monitor_info_t  *mi = ( monitor_info_t * )op->o_bd->be_private;
  42         Entry                   *e, *e_tmp, *e_ch;
  43         monitor_entry_t *mp;
  44         int                     rc;
  45
  46         mp = ( monitor_entry_t * )e_parent->e_private;
  47         e = mp->mp_children;
  48
  49         e_ch = NULL;
  50         if ( MONITOR_HAS_VOLATILE_CH( mp ) ) {
  51                 monitor_entry_create( op, NULL, e_parent, &e_ch );
  52         }
  53         monitor_cache_release( mi, e_parent );
  54
  55         /* no volatile entries? */
  56         if ( e_ch == NULL ) {
  57                 /* no persistent entries? return */
  58                 if ( e == NULL ) {
  59                         return( 0 );
  60                 }
  61
  62         /* volatile entries */
  63         } else {
  64                 /* if no persistent, return only volatile */
  65                 if ( e == NULL ) {
  66                         e = e_ch;
  67                         monitor_cache_lock( e_ch );
  68
  69                 /* else append persistent to volatile */
  70                 } else {
  71                         e_tmp = e_ch;
  72                         do {
  73                                 mp = ( monitor_entry_t * )e_tmp->e_private;
  74                                 e_tmp = mp->mp_next;
  75
  76                                 if ( e_tmp == NULL ) {
  77                                         mp->mp_next = e;
  78                                         break;
  79                                 }
  80                         } while ( e_tmp );
  81                         e = e_ch;
  82                 }
  83         }
  84
  85         /* return entries */
  86         for ( ; e != NULL; ) {
  87                 mp = ( monitor_entry_t * )e->e_private;
  88
  89                 monitor_entry_update( op, e );
  90
  91                 rc = test_filter( op, e, op->oq_search.rs_filter );
  92                 if ( rc == LDAP_COMPARE_TRUE ) {
  93                         rs->sr_entry = e;
  94                         rs->sr_flags = 0;
  95                         send_search_entry( op, rs );
  96                         rs->sr_entry = NULL;
  97                 }
  98
  99                 if ( ( mp->mp_children || MONITOR_HAS_VOLATILE_CH( mp ) )
 100                                 && sub ) {
 101                         rc = monitor_send_children( op, rs, e, sub );
 102                         if ( rc ) {
 103                                 return( rc );
 104                         }
 105                 }
 106
 107                 e_tmp = mp->mp_next;
 108                 if ( e_tmp != NULL ) {
 109                         monitor_cache_lock( e_tmp );
 110                 }
 111                 monitor_cache_release( mi, e );
 112                 e = e_tmp;
 113         }
 114
 115         return( 0 );
 116 }
 117
 118 int
 119 monitor_back_search( Operation *op, SlapReply *rs )
 120 {
 121         monitor_info_t  *mi = ( monitor_info_t * )op->o_bd->be_private;
 122         int             rc = LDAP_SUCCESS;
 123         Entry           *e = NULL, *matched = NULL;
 124
 125         Debug( LDAP_DEBUG_TRACE, "=> monitor_back_search\n", 0, 0, 0 );
 126
 127
 128         /* get entry with reader lock */
 129         monitor_cache_dn2entry( op, &op->o_req_ndn, &e, &matched );
 130         if ( e == NULL ) {
 131                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
 132                 if ( matched ) {
 133                         rs->sr_matched = matched->e_dn;
 134                 }
 135
 136                 send_ldap_result( op, rs );
 137                 if ( matched ) {
 138                         monitor_cache_release( mi, matched );
 139                         rs->sr_matched = NULL;
 140                 }
 141
 142                 return( 0 );
 143         }
 144
 145         rs->sr_attrs = op->oq_search.rs_attrs;
 146         switch ( op->oq_search.rs_scope ) {
 147         case LDAP_SCOPE_BASE:
 148                 monitor_entry_update( op, e );
 149                 rc = test_filter( op, e, op->oq_search.rs_filter );
 150                 if ( rc == LDAP_COMPARE_TRUE ) {
 151                         rs->sr_entry = e;
 152                         rs->sr_flags = 0;
 153                         send_search_entry( op, rs );
 154                         rs->sr_entry = NULL;
 155                 }
 156                 rc = LDAP_SUCCESS;
 157                 monitor_cache_release( mi, e );
 158                 break;
 159
 160         case LDAP_SCOPE_ONELEVEL:
 161                 rc = monitor_send_children( op, rs, e, 0 );
 162                 if ( rc ) {
 163                         rc = LDAP_OTHER;
 164                 }
 165
 166                 break;
 167
 168         case LDAP_SCOPE_SUBTREE:
 169                 monitor_entry_update( op, e );
 170                 rc = test_filter( op, e, op->oq_search.rs_filter );
 171                 if ( rc == LDAP_COMPARE_TRUE ) {
 172                         rs->sr_entry = e;
 173                         rs->sr_flags = 0;
 174                         send_search_entry( op, rs );
 175                         rs->sr_entry = NULL;
 176                 }
 177
 178                 rc = monitor_send_children( op, rs, e, 1 );
 179                 if ( rc ) {
 180                         rc = LDAP_OTHER;
 181                 }
 182
 183                 break;
 184         }
 185
 186         rs->sr_attrs = NULL;
 187         rs->sr_err = rc;
 188         send_ldap_result( op, rs );
 189
 190         return( rc == LDAP_SUCCESS ? 0 : 1 );
 191 }
 192