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 2001-2003 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         struct monitorinfo      *mi =
  42                 (struct monitorinfo *) op->o_bd->be_private;
  43         Entry                   *e, *e_tmp, *e_ch;
  44         struct monitorentrypriv *mp;
  45         int                     rc;
  46
  47         mp = ( struct monitorentrypriv * )e_parent->e_private;
  48         e = mp->mp_children;
  49
  50         e_ch = NULL;
  51         if ( MONITOR_HAS_VOLATILE_CH( mp ) ) {
  52                 monitor_entry_create( op, NULL, e_parent, &e_ch );
  53         }
  54         monitor_cache_release( mi, e_parent );
  55
  56         /* no volatile entries? */
  57         if ( e_ch == NULL ) {
  58                 /* no persistent entries? return */
  59                 if ( e == NULL ) {
  60                         return( 0 );
  61                 }
  62
  63         /* volatile entries */
  64         } else {
  65                 /* if no persistent, return only volatile */
  66                 if ( e == NULL ) {
  67                         e = e_ch;
  68                         monitor_cache_lock( e_ch );
  69
  70                 /* else append persistent to volatile */
  71                 } else {
  72                         e_tmp = e_ch;
  73                         do {
  74                                 mp = ( struct monitorentrypriv * )e_tmp->e_private;
  75                                 e_tmp = mp->mp_next;
  76
  77                                 if ( e_tmp == NULL ) {
  78                                         mp->mp_next = e;
  79                                         break;
  80                                 }
  81                         } while ( e_tmp );
  82                         e = e_ch;
  83                 }
  84         }
  85
  86         /* return entries */
  87         for ( ; e != NULL; ) {
  88                 mp = ( struct monitorentrypriv * )e->e_private;
  89
  90                 monitor_entry_update( op, e );
  91
  92                 rc = test_filter( op, e, op->oq_search.rs_filter );
  93                 if ( rc == LDAP_COMPARE_TRUE ) {
  94                         rs->sr_entry = e;
  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         struct monitorinfo      *mi
 122                 = (struct monitorinfo *) op->o_bd->be_private;
 123         int             rc = LDAP_SUCCESS;
 124         Entry           *e, *matched = NULL;
 125
 126 #ifdef NEW_LOGGING
 127         LDAP_LOG( BACK_MON, ENTRY,
 128                    "monitor_back_search: enter\n", 0, 0, 0 );
 129 #else
 130         Debug(LDAP_DEBUG_TRACE, "=> monitor_back_search\n%s%s%s", "", "", "");
 131 #endif
 132
 133
 134         /* get entry with reader lock */
 135         monitor_cache_dn2entry( op, &op->o_req_ndn, &e, &matched );
 136         if ( e == NULL ) {
 137                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
 138                 if ( matched ) {
 139                         rs->sr_matched = matched->e_dn;
 140                 }
 141
 142                 send_ldap_result( op, rs );
 143                 if ( matched ) {
 144                         monitor_cache_release( mi, matched );
 145                         rs->sr_matched = NULL;
 146                 }
 147
 148                 return( 0 );
 149         }
 150
 151         rs->sr_attrs = op->oq_search.rs_attrs;
 152         switch ( op->oq_search.rs_scope ) {
 153         case LDAP_SCOPE_BASE:
 154                 monitor_entry_update( op, e );
 155                 rc = test_filter( op, e, op->oq_search.rs_filter );
 156                 if ( rc == LDAP_COMPARE_TRUE ) {
 157                         rs->sr_entry = e;
 158                         send_search_entry( op, rs );
 159                         rs->sr_entry = NULL;
 160                 }
 161                 rc = LDAP_SUCCESS;
 162                 monitor_cache_release( mi, e );
 163                 break;
 164
 165         case LDAP_SCOPE_ONELEVEL:
 166                 rc = monitor_send_children( op, rs, e, 0 );
 167                 if ( rc ) {
 168                         rc = LDAP_OTHER;
 169                 }
 170
 171                 break;
 172
 173         case LDAP_SCOPE_SUBTREE:
 174                 monitor_entry_update( op, e );
 175                 rc = test_filter( op, e, op->oq_search.rs_filter );
 176                 if ( rc == LDAP_COMPARE_TRUE ) {
 177                         rs->sr_entry = e;
 178                         send_search_entry( op, rs );
 179                         rs->sr_entry = NULL;
 180                 }
 181
 182                 rc = monitor_send_children( op, rs, e, 1 );
 183                 if ( rc ) {
 184                         rc = LDAP_OTHER;
 185                 }
 186
 187                 break;
 188         }
 189
 190         rs->sr_attrs = NULL;
 191         rs->sr_err = rc;
 192         send_ldap_result( op, rs );
 193
 194         return( rc == LDAP_SUCCESS ? 0 : 1 );
 195 }
 196