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

   1 /* delete.c - ldbm backend delete routine */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2000 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     char        *ndn
  26 )
  27 {
  28         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
  29         Entry   *matched;
  30         char    *pdn = NULL;
  31         Entry   *e, *p = NULL;
  32         int rootlock = 0;
  33         int     rc = -1;
  34         int             manageDSAit = get_manageDSAit( op );
  35 #ifdef SLAPD_SCHEMA_NOT_COMPAT
  36         static AttributeDescription *children = NULL;
  37 #else
  38         static const char *children = "children";
  39 #endif
  40
  41         Debug(LDAP_DEBUG_ARGS, "==> ldbm_back_delete: %s\n", dn, 0, 0);
  42
  43         /* get entry with writer lock */
  44         if ( (e = dn2entry_w( be, ndn, &matched )) == NULL ) {
  45                 char *matched_dn = NULL;
  46                 struct berval **refs = NULL;
  47
  48                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: no such object %s\n",
  49                         dn, 0, 0);
  50
  51                 if ( matched != NULL ) {
  52                         matched_dn = ch_strdup( matched->e_dn );
  53                         refs = is_entry_referral( matched )
  54                                 ? get_entry_referrals( be, conn, op, matched )
  55                                 : NULL;
  56                         cache_return_entry_r( &li->li_cache, matched );
  57                 } else {
  58                         refs = default_referral;
  59                 }
  60
  61                 send_ldap_result( conn, op, LDAP_REFERRAL,
  62                         matched_dn, NULL, refs, NULL );
  63
  64                 if ( matched != NULL ) {
  65                         ber_bvecfree( refs );
  66                         free( matched_dn );
  67                 }
  68
  69                 return( -1 );
  70         }
  71
  72 #ifdef SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL
  73         if ( ! access_allowed( be, conn, op, e,
  74                 "entry", NULL, ACL_WRITE ) )
  75         {
  76                 Debug(LDAP_DEBUG_ARGS,
  77                         "<=- ldbm_back_delete: insufficient access %s\n",
  78                         dn, 0, 0);
  79                 send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
  80                         NULL, NULL, NULL, NULL );
  81                 goto return_results;
  82         }
  83 #endif
  84
  85     if ( !manageDSAit && is_entry_referral( e ) ) {
  86                 /* parent is a referral, don't allow add */
  87                 /* parent is an alias, don't allow add */
  88                 struct berval **refs = get_entry_referrals( be,
  89                         conn, op, e );
  90
  91                 Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
  92                     0, 0 );
  93
  94                 send_ldap_result( conn, op, LDAP_REFERRAL,
  95                     e->e_dn, NULL, refs, NULL );
  96
  97                 ber_bvecfree( refs );
  98
  99                 rc = 1;
 100                 goto return_results;
 101         }
 102
 103
 104         if ( has_children( be, e ) ) {
 105                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: non leaf %s\n",
 106                         dn, 0, 0);
 107                 send_ldap_result( conn, op, LDAP_NOT_ALLOWED_ON_NONLEAF,
 108                         NULL, "subtree delete not supported", NULL, NULL );
 109                 goto return_results;
 110         }
 111
 112         /* delete from parent's id2children entry */
 113         if( (pdn = dn_parent( be, e->e_ndn )) != NULL ) {
 114                 if( (p = dn2entry_w( be, pdn, NULL )) == NULL) {
 115                         Debug( LDAP_DEBUG_TRACE,
 116                                 "<=- ldbm_back_delete: parent does not exist\n",
 117                                 0, 0, 0);
 118                         send_ldap_result( conn, op, LDAP_OTHER,
 119                                 NULL, "could not locate parent of entry", NULL, NULL );
 120                         goto return_results;
 121                 }
 122
 123                 /* check parent for "children" acl */
 124                 if ( ! access_allowed( be, conn, op, p,
 125                         children, NULL, ACL_WRITE ) )
 126                 {
 127                         Debug( LDAP_DEBUG_TRACE,
 128                                 "<=- ldbm_back_delete: no access to parent\n", 0,
 129                                 0, 0 );
 130                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 131                                 NULL, NULL, NULL, NULL );
 132                         goto return_results;
 133                 }
 134
 135         } else {
 136                 /* no parent, must be root to delete */
 137                 if( ! be_isroot( be, op->o_ndn ) ) {
 138                         Debug( LDAP_DEBUG_TRACE,
 139                                 "<=- ldbm_back_delete: no parent & not root\n",
 140                                 0, 0, 0);
 141                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 142                                 NULL, NULL, NULL, NULL );
 143                         goto return_results;
 144                 }
 145
 146                 ldap_pvt_thread_mutex_lock(&li->li_root_mutex);
 147                 rootlock = 1;
 148         }
 149
 150         /* delete from dn2id mapping */
 151         if ( dn2id_delete( be, e->e_ndn, e->e_id ) != 0 ) {
 152                 Debug(LDAP_DEBUG_ARGS,
 153                         "<=- ldbm_back_delete: operations error %s\n",
 154                         dn, 0, 0);
 155                 send_ldap_result( conn, op, LDAP_OTHER,
 156                         NULL, "DN index delete failed", NULL, NULL );
 157                 goto return_results;
 158         }
 159
 160         /* delete from disk and cache */
 161         if ( id2entry_delete( be, e ) != 0 ) {
 162                 Debug(LDAP_DEBUG_ARGS,
 163                         "<=- ldbm_back_delete: operations error %s\n",
 164                         dn, 0, 0);
 165                 send_ldap_result( conn, op, LDAP_OTHER,
 166                         NULL, "entry delete failed", NULL, NULL );
 167                 goto return_results;
 168         }
 169
 170         send_ldap_result( conn, op, LDAP_SUCCESS,
 171                 NULL, NULL, NULL, NULL );
 172         rc = 0;
 173
 174 return_results:;
 175         if ( pdn != NULL ) free(pdn);
 176
 177         if( p != NULL ) {
 178                 /* free parent and writer lock */
 179                 cache_return_entry_w( &li->li_cache, p );
 180         }
 181
 182         if ( rootlock ) {
 183                 /* release root lock */
 184                 ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 185         }
 186
 187         /* free entry and writer lock */
 188         cache_return_entry_w( &li->li_cache, e );
 189
 190         return rc;
 191 }