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

   1 /* delete.c - ldbm backend delete routine */
   2 /*
   3  * Copyright 1998-1999 The OpenLDAP Foundation, All Rights Reserved.
   4  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   5  */
   6
   7 #include "portable.h"
   8
   9 #include <stdio.h>
  10
  11 #include <ac/string.h>
  12 #include <ac/socket.h>
  13
  14 #include "slap.h"
  15 #include "back-ldbm.h"
  16 #include "proto-back-ldbm.h"
  17
  18 int
  19 ldbm_back_delete(
  20     Backend     *be,
  21     Connection  *conn,
  22     Operation   *op,
  23     char        *dn
  24 )
  25 {
  26         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
  27         Entry   *matched = NULL;
  28         char    *pdn = NULL;
  29         Entry   *e, *p = NULL;
  30         int rootlock = 0;
  31         int     rc = -1;
  32         int             manageDSAit = get_manageDSAit( op );
  33
  34         Debug(LDAP_DEBUG_ARGS, "==> ldbm_back_delete: %s\n", dn, 0, 0);
  35
  36         /* get entry with writer lock */
  37         if ( (e = dn2entry_w( be, dn, &matched )) == NULL ) {
  38                 char *matched_dn = NULL;
  39                 struct berval **refs = NULL;
  40
  41                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: no such object %s\n",
  42                         dn, 0, 0);
  43
  44                 if ( matched != NULL ) {
  45                         matched_dn = ch_strdup( matched->e_dn );
  46                         refs = is_entry_referral( matched )
  47                                 ? get_entry_referrals( be, conn, op, matched )
  48                                 : NULL;
  49                         cache_return_entry_r( &li->li_cache, matched );
  50                 } else {
  51                         refs = default_referral;
  52                 }
  53
  54                 send_ldap_result( conn, op, LDAP_REFERRAL,
  55                         matched_dn, NULL, refs, NULL );
  56
  57                 if ( matched != NULL ) {
  58                         ber_bvecfree( refs );
  59                         free( matched_dn );
  60                 }
  61
  62                 return( -1 );
  63         }
  64
  65 #ifdef SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL
  66         if ( ! access_allowed( be, conn, op, e,
  67                 "entry", NULL, ACL_WRITE ) )
  68         {
  69                 Debug(LDAP_DEBUG_ARGS,
  70                         "<=- ldbm_back_delete: insufficient access %s\n",
  71                         dn, 0, 0);
  72                 send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
  73                         NULL, NULL, NULL, NULL );
  74                 goto return_results;
  75         }
  76 #endif
  77
  78     if ( !manageDSAit && is_entry_referral( e ) ) {
  79                 /* parent is a referral, don't allow add */
  80                 /* parent is an alias, don't allow add */
  81                 struct berval **refs = get_entry_referrals( be,
  82                         conn, op, e );
  83
  84                 Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
  85                     0, 0 );
  86
  87                 send_ldap_result( conn, op, LDAP_REFERRAL,
  88                     e->e_dn, NULL, refs, NULL );
  89
  90                 ber_bvecfree( refs );
  91
  92                 rc = 1;
  93                 goto return_results;
  94         }
  95
  96
  97         if ( has_children( be, e ) ) {
  98                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: non leaf %s\n",
  99                         dn, 0, 0);
 100                 send_ldap_result( conn, op, LDAP_NOT_ALLOWED_ON_NONLEAF,
 101                         NULL, NULL, NULL, NULL );
 102                 goto return_results;
 103         }
 104
 105         /* delete from parent's id2children entry */
 106         if( (pdn = dn_parent( be, e->e_ndn )) != NULL ) {
 107                 if( (p = dn2entry_w( be, pdn, &matched )) == NULL) {
 108                         Debug( LDAP_DEBUG_TRACE,
 109                                 "<=- ldbm_back_delete: parent does not exist\n",
 110                                 0, 0, 0);
 111                         send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 112                                 NULL, NULL, NULL, NULL );
 113                         goto return_results;
 114                 }
 115
 116                 /* check parent for "children" acl */
 117                 if ( ! access_allowed( be, conn, op, p,
 118                         "children", NULL, ACL_WRITE ) )
 119                 {
 120                         Debug( LDAP_DEBUG_TRACE,
 121                                 "<=- ldbm_back_delete: no access to parent\n", 0,
 122                                 0, 0 );
 123                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 124                                 NULL, NULL, NULL, NULL );
 125                         goto return_results;
 126                 }
 127
 128         } else {
 129                 /* no parent, must be root to delete */
 130                 if( ! be_isroot( be, op->o_ndn ) ) {
 131                         Debug( LDAP_DEBUG_TRACE,
 132                                 "<=- ldbm_back_delete: no parent & not root\n",
 133                                 0, 0, 0);
 134                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 135                                 NULL, NULL, NULL, NULL );
 136                         goto return_results;
 137                 }
 138
 139                 ldap_pvt_thread_mutex_lock(&li->li_root_mutex);
 140                 rootlock = 1;
 141         }
 142
 143         /* delete from dn2id mapping */
 144         if ( dn2id_delete( be, e->e_ndn ) != 0 ) {
 145                 Debug(LDAP_DEBUG_ARGS,
 146                         "<=- ldbm_back_delete: operations error %s\n",
 147                         dn, 0, 0);
 148                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 149                         NULL, NULL, NULL, NULL );
 150                 goto return_results;
 151         }
 152
 153         /* delete from disk and cache */
 154         if ( id2entry_delete( be, e ) != 0 ) {
 155                 Debug(LDAP_DEBUG_ARGS,
 156                         "<=- ldbm_back_delete: operations error %s\n",
 157                         dn, 0, 0);
 158                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 159                         NULL, NULL, NULL, NULL );
 160                 goto return_results;
 161         }
 162
 163         send_ldap_result( conn, op, LDAP_SUCCESS,
 164                 NULL, NULL, NULL, NULL );
 165         rc = 0;
 166
 167 return_results:;
 168         if ( pdn != NULL ) free(pdn);
 169
 170         if( p != NULL ) {
 171                 /* free parent and writer lock */
 172                 cache_return_entry_w( &li->li_cache, p );
 173         }
 174
 175         if ( rootlock ) {
 176                 /* release root lock */
 177                 ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 178         }
 179
 180         /* free entry and writer lock */
 181         cache_return_entry_w( &li->li_cache, e );
 182
 183         if ( matched != NULL ) free(matched);
 184
 185         return rc;
 186 }