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