git.sur5r.net Git - openldap/blob - servers/slapd/back-ldbm/delete.c

   1 /* delete.c - ldbm backend delete routine */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2005 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16
  17 #include "portable.h"
  18
  19 #include <stdio.h>
  20
  21 #include <ac/string.h>
  22 #include <ac/socket.h>
  23
  24 #include "slap.h"
  25 #include "back-ldbm.h"
  26 #include "proto-back-ldbm.h"
  27
  28 int
  29 ldbm_back_delete(
  30     Operation   *op,
  31     SlapReply   *rs )
  32 {
  33         struct ldbminfo *li = (struct ldbminfo *) op->o_bd->be_private;
  34         Entry   *matched;
  35         struct berval   pdn;
  36         Entry   *e, *p = NULL;
  37         int     rc = -1;
  38         int             manageDSAit = get_manageDSAit( op );
  39         AttributeDescription *children = slap_schema.si_ad_children;
  40         AttributeDescription *entry = slap_schema.si_ad_entry;
  41
  42         Debug(LDAP_DEBUG_ARGS, "==> ldbm_back_delete: %s\n", op->o_req_dn.bv_val, 0, 0);
  43
  44         /* grab giant lock for writing */
  45         ldap_pvt_thread_rdwr_wlock(&li->li_giant_rwlock);
  46
  47         /* get entry with writer lock */
  48         e = dn2entry_w( op->o_bd, &op->o_req_ndn, &matched );
  49
  50         /* FIXME : dn2entry() should return non-glue entry */
  51         if ( e == NULL || ( !manageDSAit && is_entry_glue( e ))) {
  52                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: no such object %s\n",
  53                         op->o_req_dn.bv_val, 0, 0);
  54
  55                 if ( matched != NULL ) {
  56                         rs->sr_matched = ch_strdup( matched->e_dn );
  57                         rs->sr_ref = is_entry_referral( matched )
  58                                 ? get_entry_referrals( op, matched )
  59                                 : NULL;
  60                         cache_return_entry_r( &li->li_cache, matched );
  61
  62                 } else {
  63                         rs->sr_ref = referral_rewrite( default_referral, NULL,
  64                                                         &op->o_req_dn, LDAP_SCOPE_DEFAULT );
  65                 }
  66
  67                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
  68
  69                 rs->sr_err = LDAP_REFERRAL;
  70                 send_ldap_result( op, rs );
  71
  72                 if ( rs->sr_ref ) ber_bvarray_free( rs->sr_ref );
  73                 free( (char *)rs->sr_matched );
  74                 rs->sr_ref = NULL;
  75                 rs->sr_matched = NULL;
  76                 return( -1 );
  77         }
  78
  79         /* check entry for "entry" acl */
  80         if ( ! access_allowed( op, e, entry, NULL, ACL_WDEL, NULL ) )
  81         {
  82                 Debug( LDAP_DEBUG_TRACE,
  83                         "<=- ldbm_back_delete: no write access to entry\n", 0,
  84                         0, 0 );
  85
  86                 send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
  87                         "no write access to entry" );
  88
  89                 rc = LDAP_INSUFFICIENT_ACCESS;
  90                 goto return_results;
  91         }
  92
  93         if ( !manageDSAit && is_entry_referral( e ) ) {
  94                 /* parent is a referral, don't allow add */
  95                 /* parent is an alias, don't allow add */
  96                 rs->sr_ref = get_entry_referrals( op, e );
  97
  98                 Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
  99                     0, 0 );
 100
 101                 rs->sr_err = LDAP_REFERRAL;
 102                 rs->sr_matched = e->e_name.bv_val;
 103                 send_ldap_result( op, rs );
 104
 105                 if ( rs->sr_ref ) ber_bvarray_free( rs->sr_ref );
 106                 rs->sr_ref = NULL;
 107                 rs->sr_matched = NULL;
 108                 rc = LDAP_REFERRAL;
 109                 goto return_results;
 110         }
 111
 112         if ( has_children( op->o_bd, e ) ) {
 113                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: non leaf %s\n",
 114                         op->o_req_dn.bv_val, 0, 0);
 115
 116                 send_ldap_error( op, rs, LDAP_NOT_ALLOWED_ON_NONLEAF,
 117                         "subordinate objects must be deleted first");
 118                 goto return_results;
 119         }
 120
 121         /* delete from parent's id2children entry */
 122         if( !be_issuffix( op->o_bd, &e->e_nname ) && (dnParent( &e->e_nname, &pdn ),
 123                 pdn.bv_len) ) {
 124                 if( (p = dn2entry_w( op->o_bd, &pdn, NULL )) == NULL) {
 125                         Debug( LDAP_DEBUG_TRACE,
 126                                 "<=- ldbm_back_delete: parent does not exist\n",
 127                                 0, 0, 0);
 128
 129                         send_ldap_error( op, rs, LDAP_OTHER,
 130                                 "could not locate parent of entry" );
 131                         goto return_results;
 132                 }
 133
 134                 /* check parent for "children" acl */
 135                 if ( ! access_allowed( op, p,
 136                         children, NULL, ACL_WDEL, NULL ) )
 137                 {
 138                         Debug( LDAP_DEBUG_TRACE,
 139                                 "<=- ldbm_back_delete: no access to parent\n", 0,
 140                                 0, 0 );
 141
 142                         send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
 143                                 "no write access to parent" );
 144                         goto return_results;
 145                 }
 146
 147         } else {
 148                 /* no parent, must be root to delete */
 149                 if( ! be_isroot( op ) ) {
 150                         if ( be_issuffix( op->o_bd, (struct berval *)&slap_empty_bv )
 151                                 || be_shadow_update( op ) ) {
 152                                 p = (Entry *)&slap_entry_root;
 153
 154                                 rc = access_allowed( op, p,
 155                                         children, NULL, ACL_WDEL, NULL );
 156                                 p = NULL;
 157
 158                                 /* check parent for "children" acl */
 159                                 if ( ! rc ) {
 160                                         Debug( LDAP_DEBUG_TRACE,
 161                                                 "<=- ldbm_back_delete: no "
 162                                                 "access to parent\n", 0, 0, 0 );
 163
 164                                         send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
 165                                                 "no write access to parent" );
 166                                         goto return_results;
 167                                 }
 168
 169                         } else {
 170                                 Debug( LDAP_DEBUG_TRACE,
 171                                         "<=- ldbm_back_delete: no parent & "
 172                                         "not root\n", 0, 0, 0);
 173
 174                                 send_ldap_error( op, rs,
 175                                         LDAP_INSUFFICIENT_ACCESS,
 176                                         NULL );
 177                                 goto return_results;
 178                         }
 179                 }
 180         }
 181
 182         /* delete from dn2id mapping */
 183         if ( dn2id_delete( op->o_bd, &e->e_nname, e->e_id ) != 0 ) {
 184                 Debug(LDAP_DEBUG_ARGS,
 185                         "<=- ldbm_back_delete: operations error %s\n",
 186                         op->o_req_dn.bv_val, 0, 0);
 187
 188                 send_ldap_error( op, rs, LDAP_OTHER,
 189                         "DN index delete failed" );
 190                 goto return_results;
 191         }
 192
 193         /* delete from disk and cache */
 194         if ( id2entry_delete( op->o_bd, e ) != 0 ) {
 195                 Debug(LDAP_DEBUG_ARGS,
 196                         "<=- ldbm_back_delete: operations error %s\n",
 197                         op->o_req_dn.bv_val, 0, 0);
 198
 199                 send_ldap_error( op, rs, LDAP_OTHER,
 200                         "entry delete failed" );
 201                 goto return_results;
 202         }
 203
 204         /* delete attribute indices */
 205         (void) index_entry_del( op, e );
 206
 207         rs->sr_err = LDAP_SUCCESS;
 208         send_ldap_result( op, rs );
 209         rc = LDAP_SUCCESS;
 210
 211 return_results:;
 212         if( p != NULL ) {
 213                 /* free parent and writer lock */
 214                 cache_return_entry_w( &li->li_cache, p );
 215         }
 216
 217         /* free entry and writer lock */
 218         cache_return_entry_w( &li->li_cache, e );
 219
 220         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 221
 222         return rc;
 223 }