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,
  81                 entry, NULL, ACL_WRITE, NULL ) )
  82         {
  83                 Debug( LDAP_DEBUG_TRACE,
  84                         "<=- ldbm_back_delete: no write access to entry\n", 0,
  85                         0, 0 );
  86
  87                 send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
  88                         "no write access to entry" );
  89
  90                 rc = LDAP_INSUFFICIENT_ACCESS;
  91                 goto return_results;
  92         }
  93
  94         if ( !manageDSAit && is_entry_referral( e ) ) {
  95                 /* parent is a referral, don't allow add */
  96                 /* parent is an alias, don't allow add */
  97                 rs->sr_ref = get_entry_referrals( op, e );
  98
  99                 Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
 100                     0, 0 );
 101
 102                 rs->sr_err = LDAP_REFERRAL;
 103                 rs->sr_matched = e->e_name.bv_val;
 104                 send_ldap_result( op, rs );
 105
 106                 if ( rs->sr_ref ) ber_bvarray_free( rs->sr_ref );
 107                 rs->sr_ref = NULL;
 108                 rs->sr_matched = NULL;
 109                 rc = LDAP_REFERRAL;
 110                 goto return_results;
 111         }
 112
 113         if ( has_children( op->o_bd, e ) ) {
 114                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: non leaf %s\n",
 115                         op->o_req_dn.bv_val, 0, 0);
 116
 117                 send_ldap_error( op, rs, LDAP_NOT_ALLOWED_ON_NONLEAF,
 118                         "subtree delete not supported" );
 119                 goto return_results;
 120         }
 121
 122         /* delete from parent's id2children entry */
 123         if( !be_issuffix( op->o_bd, &e->e_nname ) && (dnParent( &e->e_nname, &pdn ),
 124                 pdn.bv_len) ) {
 125                 if( (p = dn2entry_w( op->o_bd, &pdn, NULL )) == NULL) {
 126                         Debug( LDAP_DEBUG_TRACE,
 127                                 "<=- ldbm_back_delete: parent does not exist\n",
 128                                 0, 0, 0);
 129
 130                         send_ldap_error( op, rs, LDAP_OTHER,
 131                                 "could not locate parent of entry" );
 132                         goto return_results;
 133                 }
 134
 135                 /* check parent for "children" acl */
 136                 if ( ! access_allowed( op, p,
 137                         children, NULL, ACL_WRITE, NULL ) )
 138                 {
 139                         Debug( LDAP_DEBUG_TRACE,
 140                                 "<=- ldbm_back_delete: no access to parent\n", 0,
 141                                 0, 0 );
 142
 143                         send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
 144                                 "no write access to parent" );
 145                         goto return_results;
 146                 }
 147
 148         } else {
 149                 /* no parent, must be root to delete */
 150                 if( ! be_isroot( op ) ) {
 151                         if ( be_issuffix( op->o_bd, (struct berval *)&slap_empty_bv )
 152                                 || be_shadow_update( op ) ) {
 153                                 p = (Entry *)&slap_entry_root;
 154
 155                                 rc = access_allowed( op, p,
 156                                         children, NULL, ACL_WRITE, NULL );
 157                                 p = NULL;
 158
 159                                 /* check parent for "children" acl */
 160                                 if ( ! rc ) {
 161                                         Debug( LDAP_DEBUG_TRACE,
 162                                                 "<=- ldbm_back_delete: no "
 163                                                 "access to parent\n", 0, 0, 0 );
 164
 165                                         send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
 166                                                 "no write access to parent" );
 167                                         goto return_results;
 168                                 }
 169
 170                         } else {
 171                                 Debug( LDAP_DEBUG_TRACE,
 172                                         "<=- ldbm_back_delete: no parent & "
 173                                         "not root\n", 0, 0, 0);
 174
 175                                 send_ldap_error( op, rs,
 176                                         LDAP_INSUFFICIENT_ACCESS,
 177                                         NULL );
 178                                 goto return_results;
 179                         }
 180                 }
 181         }
 182
 183         /* delete from dn2id mapping */
 184         if ( dn2id_delete( op->o_bd, &e->e_nname, e->e_id ) != 0 ) {
 185                 Debug(LDAP_DEBUG_ARGS,
 186                         "<=- ldbm_back_delete: operations error %s\n",
 187                         op->o_req_dn.bv_val, 0, 0);
 188
 189                 send_ldap_error( op, rs, LDAP_OTHER,
 190                         "DN index delete failed" );
 191                 goto return_results;
 192         }
 193
 194         /* delete from disk and cache */
 195         if ( id2entry_delete( op->o_bd, e ) != 0 ) {
 196                 Debug(LDAP_DEBUG_ARGS,
 197                         "<=- ldbm_back_delete: operations error %s\n",
 198                         op->o_req_dn.bv_val, 0, 0);
 199
 200                 send_ldap_error( op, rs, LDAP_OTHER,
 201                         "entry delete failed" );
 202                 goto return_results;
 203         }
 204
 205         /* delete attribute indices */
 206         (void) index_entry_del( op, e );
 207
 208         rs->sr_err = LDAP_SUCCESS;
 209         send_ldap_result( op, rs );
 210         rc = LDAP_SUCCESS;
 211
 212 return_results:;
 213         if( p != NULL ) {
 214                 /* free parent and writer lock */
 215                 cache_return_entry_w( &li->li_cache, p );
 216         }
 217
 218         /* free entry and writer lock */
 219         cache_return_entry_w( &li->li_cache, e );
 220
 221         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 222
 223         return rc;
 224 }