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

   1 /* delete.c - ldbm backend delete routine */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-1999 The OpenLDAP Foundation, All Rights Reserved.
   5  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   6  */
   7
   8 #include "portable.h"
   9
  10 #include <stdio.h>
  11
  12 #include <ac/string.h>
  13 #include <ac/socket.h>
  14
  15 #include "slap.h"
  16 #include "back-ldbm.h"
  17 #include "proto-back-ldbm.h"
  18
  19 int
  20 ldbm_back_delete(
  21     Backend     *be,
  22     Connection  *conn,
  23     Operation   *op,
  24     char        *dn
  25 )
  26 {
  27         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
  28         Entry   *matched;
  29         char    *pdn = NULL;
  30         Entry   *e, *p = NULL;
  31         int rootlock = 0;
  32         int     rc = -1;
  33         int             manageDSAit = get_manageDSAit( op );
  34
  35         Debug(LDAP_DEBUG_ARGS, "==> ldbm_back_delete: %s\n", dn, 0, 0);
  36
  37         /* get entry with writer lock */
  38         if ( (e = dn2entry_w( be, dn, &matched )) == NULL ) {
  39                 char *matched_dn = NULL;
  40                 struct berval **refs = NULL;
  41
  42                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: no such object %s\n",
  43                         dn, 0, 0);
  44
  45                 if ( matched != NULL ) {
  46                         matched_dn = ch_strdup( matched->e_dn );
  47                         refs = is_entry_referral( matched )
  48                                 ? get_entry_referrals( be, conn, op, matched )
  49                                 : NULL;
  50                         cache_return_entry_r( &li->li_cache, matched );
  51                 } else {
  52                         refs = default_referral;
  53                 }
  54
  55                 send_ldap_result( conn, op, LDAP_REFERRAL,
  56                         matched_dn, NULL, refs, NULL );
  57
  58                 if ( matched != NULL ) {
  59                         ber_bvecfree( refs );
  60                         free( matched_dn );
  61                 }
  62
  63                 return( -1 );
  64         }
  65
  66 #ifdef SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL
  67         if ( ! access_allowed( be, conn, op, e,
  68                 "entry", NULL, ACL_WRITE ) )
  69         {
  70                 Debug(LDAP_DEBUG_ARGS,
  71                         "<=- ldbm_back_delete: insufficient access %s\n",
  72                         dn, 0, 0);
  73                 send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
  74                         NULL, NULL, NULL, NULL );
  75                 goto return_results;
  76         }
  77 #endif
  78
  79     if ( !manageDSAit && is_entry_referral( e ) ) {
  80                 /* parent is a referral, don't allow add */
  81                 /* parent is an alias, don't allow add */
  82                 struct berval **refs = get_entry_referrals( be,
  83                         conn, op, e );
  84
  85                 Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
  86                     0, 0 );
  87
  88                 send_ldap_result( conn, op, LDAP_REFERRAL,
  89                     e->e_dn, NULL, refs, NULL );
  90
  91                 ber_bvecfree( refs );
  92
  93                 rc = 1;
  94                 goto return_results;
  95         }
  96
  97
  98         if ( has_children( be, e ) ) {
  99                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: non leaf %s\n",
 100                         dn, 0, 0);
 101                 send_ldap_result( conn, op, LDAP_NOT_ALLOWED_ON_NONLEAF,
 102                         NULL, NULL, NULL, NULL );
 103                 goto return_results;
 104         }
 105
 106         /* delete from parent's id2children entry */
 107         if( (pdn = dn_parent( be, e->e_ndn )) != NULL ) {
 108                 if( (p = dn2entry_w( be, pdn, NULL )) == NULL) {
 109                         Debug( LDAP_DEBUG_TRACE,
 110                                 "<=- ldbm_back_delete: parent does not exist\n",
 111                                 0, 0, 0);
 112                         send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 113                                 NULL, NULL, NULL, NULL );
 114                         goto return_results;
 115                 }
 116
 117                 /* check parent for "children" acl */
 118                 if ( ! access_allowed( be, conn, op, p,
 119                         "children", NULL, ACL_WRITE ) )
 120                 {
 121                         Debug( LDAP_DEBUG_TRACE,
 122                                 "<=- ldbm_back_delete: no access to parent\n", 0,
 123                                 0, 0 );
 124                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 125                                 NULL, NULL, NULL, NULL );
 126                         goto return_results;
 127                 }
 128
 129         } else {
 130                 /* no parent, must be root to delete */
 131                 if( ! be_isroot( be, op->o_ndn ) ) {
 132                         Debug( LDAP_DEBUG_TRACE,
 133                                 "<=- ldbm_back_delete: no parent & not root\n",
 134                                 0, 0, 0);
 135                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 136                                 NULL, NULL, NULL, NULL );
 137                         goto return_results;
 138                 }
 139
 140                 ldap_pvt_thread_mutex_lock(&li->li_root_mutex);
 141                 rootlock = 1;
 142         }
 143
 144         /* delete from dn2id mapping */
 145         if ( dn2id_delete( be, e->e_ndn, e->e_id ) != 0 ) {
 146                 Debug(LDAP_DEBUG_ARGS,
 147                         "<=- ldbm_back_delete: operations error %s\n",
 148                         dn, 0, 0);
 149                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 150                         NULL, NULL, NULL, NULL );
 151                 goto return_results;
 152         }
 153
 154         /* delete from disk and cache */
 155         if ( id2entry_delete( be, e ) != 0 ) {
 156                 Debug(LDAP_DEBUG_ARGS,
 157                         "<=- ldbm_back_delete: operations error %s\n",
 158                         dn, 0, 0);
 159                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 160                         NULL, NULL, NULL, NULL );
 161                 goto return_results;
 162         }
 163
 164         send_ldap_result( conn, op, LDAP_SUCCESS,
 165                 NULL, NULL, NULL, NULL );
 166         rc = 0;
 167
 168 return_results:;
 169         if ( pdn != NULL ) free(pdn);
 170
 171         if( p != NULL ) {
 172                 /* free parent and writer lock */
 173                 cache_return_entry_w( &li->li_cache, p );
 174         }
 175
 176         if ( rootlock ) {
 177                 /* release root lock */
 178                 ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 179         }
 180
 181         /* free entry and writer lock */
 182         cache_return_entry_w( &li->li_cache, e );
 183
 184         return rc;
 185 }