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 2001-2017 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 void
  34 monitor_find_children(
  35         Operation *op,
  36         SlapReply *rs,
  37         Entry *e_parent,
  38         Entry **nonv,
  39         Entry **vol
  40 )
  41 {
  42         monitor_entry_t *mp;
  43
  44         mp = ( monitor_entry_t * )e_parent->e_private;
  45         *nonv = mp->mp_children;
  46
  47         if ( MONITOR_HAS_VOLATILE_CH( mp ) ) {
  48                 monitor_entry_create( op, rs, NULL, e_parent, vol );
  49         }
  50 }
  51
  52 static int
  53 monitor_send_children(
  54         Operation       *op,
  55         SlapReply       *rs,
  56         Entry           *e_nonvolatile,
  57         Entry           *e_ch,
  58         int             sub )
  59 {
  60         monitor_info_t  *mi = ( monitor_info_t * )op->o_bd->be_private;
  61         Entry                   *e,
  62                                 *e_tmp;
  63         monitor_entry_t *mp;
  64         int                     rc,
  65                                 nonvolatile = 0;
  66
  67         e = e_nonvolatile;
  68
  69         /* no volatile entries? */
  70         if ( e_ch == NULL ) {
  71                 /* no persistent entries? return */
  72                 if ( e == NULL ) {
  73                         return LDAP_SUCCESS;
  74                 }
  75
  76         /* volatile entries */
  77         } else {
  78                 /* if no persistent, return only volatile */
  79                 if ( e == NULL ) {
  80                         e = e_ch;
  81
  82                 /* else append persistent to volatile */
  83                 } else {
  84                         e_tmp = e_ch;
  85                         do {
  86                                 mp = ( monitor_entry_t * )e_tmp->e_private;
  87                                 e_tmp = mp->mp_next;
  88
  89                                 if ( e_tmp == NULL ) {
  90                                         mp->mp_next = e;
  91                                         break;
  92                                 }
  93                         } while ( e_tmp );
  94                         e = e_ch;
  95                 }
  96         }
  97
  98         /* return entries */
  99         for ( ; e != NULL; e = e_tmp ) {
 100                 Entry *sub_nv = NULL, *sub_ch = NULL;
 101
 102                 monitor_cache_lock( e );
 103                 monitor_entry_update( op, rs, e );
 104
 105                 if ( e == e_nonvolatile )
 106                         nonvolatile = 1;
 107
 108                 mp = ( monitor_entry_t * )e->e_private;
 109                 e_tmp = mp->mp_next;
 110
 111                 if ( op->o_abandon ) {
 112                         monitor_cache_release( mi, e );
 113                         rc = SLAPD_ABANDON;
 114                         goto freeout;
 115                 }
 116
 117                 if ( sub )
 118                         monitor_find_children( op, rs, e, &sub_nv, &sub_ch );
 119
 120                 rc = test_filter( op, e, op->oq_search.rs_filter );
 121                 if ( rc == LDAP_COMPARE_TRUE ) {
 122                         rs->sr_entry = e;
 123                         rs->sr_flags = REP_ENTRY_MUSTRELEASE;
 124                         rc = send_search_entry( op, rs );
 125                         if ( rc ) {
 126                                 for ( e = sub_ch; e != NULL; e = sub_nv ) {
 127                                         mp = ( monitor_entry_t * )e->e_private;
 128                                         sub_nv = mp->mp_next;
 129                                         monitor_cache_lock( e );
 130                                         monitor_cache_release( mi, e );
 131                                 }
 132                                 goto freeout;
 133                         }
 134                 } else {
 135                         monitor_cache_release( mi, e );
 136                 }
 137
 138                 if ( sub ) {
 139                         rc = monitor_send_children( op, rs, sub_nv, sub_ch, sub );
 140                         if ( rc ) {
 141 freeout:
 142                                 if ( nonvolatile == 0 ) {
 143                                         for ( ; e_tmp != NULL; ) {
 144                                                 mp = ( monitor_entry_t * )e_tmp->e_private;
 145                                                 e = e_tmp;
 146                                                 e_tmp = mp->mp_next;
 147                                                 monitor_cache_lock( e );
 148                                                 monitor_cache_release( mi, e );
 149
 150                                                 if ( e_tmp == e_nonvolatile ) {
 151                                                         break;
 152                                                 }
 153                                         }
 154                                 }
 155
 156                                 return( rc );
 157                         }
 158                 }
 159         }
 160
 161         return LDAP_SUCCESS;
 162 }
 163
 164 int
 165 monitor_back_search( Operation *op, SlapReply *rs )
 166 {
 167         monitor_info_t  *mi = ( monitor_info_t * )op->o_bd->be_private;
 168         int             rc = LDAP_SUCCESS;
 169         Entry           *e = NULL, *matched = NULL;
 170         Entry           *e_nv = NULL, *e_ch = NULL;
 171         slap_mask_t     mask;
 172
 173         Debug( LDAP_DEBUG_TRACE, "=> monitor_back_search\n", 0, 0, 0 );
 174
 175
 176         /* get entry with reader lock */
 177         monitor_cache_dn2entry( op, rs, &op->o_req_ndn, &e, &matched );
 178         if ( e == NULL ) {
 179                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
 180                 if ( matched ) {
 181                         if ( !access_allowed_mask( op, matched,
 182                                         slap_schema.si_ad_entry,
 183                                         NULL, ACL_DISCLOSE, NULL, NULL ) )
 184                         {
 185                                 /* do nothing */ ;
 186                         } else {
 187                                 rs->sr_matched = matched->e_dn;
 188                         }
 189                 }
 190
 191                 send_ldap_result( op, rs );
 192                 if ( matched ) {
 193                         monitor_cache_release( mi, matched );
 194                         rs->sr_matched = NULL;
 195                 }
 196
 197                 return rs->sr_err;
 198         }
 199
 200         /* NOTE: __NEW__ "search" access is required
 201          * on searchBase object */
 202         if ( !access_allowed_mask( op, e, slap_schema.si_ad_entry,
 203                                 NULL, ACL_SEARCH, NULL, &mask ) )
 204         {
 205                 monitor_cache_release( mi, e );
 206
 207                 if ( !ACL_GRANT( mask, ACL_DISCLOSE ) ) {
 208                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 209                 } else {
 210                         rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 211                 }
 212
 213                 send_ldap_result( op, rs );
 214
 215                 return rs->sr_err;
 216         }
 217
 218         rs->sr_attrs = op->oq_search.rs_attrs;
 219         switch ( op->oq_search.rs_scope ) {
 220         case LDAP_SCOPE_BASE:
 221                 monitor_entry_update( op, rs, e );
 222                 rc = test_filter( op, e, op->oq_search.rs_filter );
 223                 if ( rc == LDAP_COMPARE_TRUE ) {
 224                         rs->sr_entry = e;
 225                         rs->sr_flags = REP_ENTRY_MUSTRELEASE;
 226                         send_search_entry( op, rs );
 227                         rs->sr_entry = NULL;
 228                 } else {
 229                         monitor_cache_release( mi, e );
 230                 }
 231                 rc = LDAP_SUCCESS;
 232                 break;
 233
 234         case LDAP_SCOPE_ONELEVEL:
 235         case LDAP_SCOPE_SUBORDINATE:
 236                 monitor_find_children( op, rs, e, &e_nv, &e_ch );
 237                 monitor_cache_release( mi, e );
 238                 rc = monitor_send_children( op, rs, e_nv, e_ch,
 239                         op->oq_search.rs_scope == LDAP_SCOPE_SUBORDINATE );
 240                 break;
 241
 242         case LDAP_SCOPE_SUBTREE:
 243                 monitor_entry_update( op, rs, e );
 244                 monitor_find_children( op, rs, e, &e_nv, &e_ch );
 245                 rc = test_filter( op, e, op->oq_search.rs_filter );
 246                 if ( rc == LDAP_COMPARE_TRUE ) {
 247                         rs->sr_entry = e;
 248                         rs->sr_flags = REP_ENTRY_MUSTRELEASE;
 249                         send_search_entry( op, rs );
 250                         rs->sr_entry = NULL;
 251                 } else {
 252                         monitor_cache_release( mi, e );
 253                 }
 254
 255                 rc = monitor_send_children( op, rs, e_nv, e_ch, 1 );
 256                 break;
 257
 258         default:
 259                 rc = LDAP_UNWILLING_TO_PERFORM;
 260                 monitor_cache_release( mi, e );
 261         }
 262
 263         rs->sr_attrs = NULL;
 264         rs->sr_err = rc;
 265         if ( rs->sr_err != SLAPD_ABANDON ) {
 266                 send_ldap_result( op, rs );
 267         }
 268
 269         return rs->sr_err;
 270 }
 271