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

   1 /* delete.c - ldbm backend delete routine */
   2
   3 #include "portable.h"
   4
   5 #include <stdio.h>
   6
   7 #include <ac/string.h>
   8 #include <ac/socket.h>
   9
  10 #include "slap.h"
  11 #include "back-ldbm.h"
  12 #include "proto-back-ldbm.h"
  13
  14 int
  15 ldbm_back_delete(
  16     Backend     *be,
  17     Connection  *conn,
  18     Operation   *op,
  19     char        *dn
  20 )
  21 {
  22         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
  23         Entry   *matched = NULL;
  24         char    *pdn = NULL;
  25         Entry   *e, *p = NULL;
  26         int rootlock = 0;
  27         int     rc = -1;
  28         int             manageDSAit = get_manageDSAit( op );
  29
  30         Debug(LDAP_DEBUG_ARGS, "==> ldbm_back_delete: %s\n", dn, 0, 0);
  31
  32         /* get entry with writer lock */
  33         if ( (e = dn2entry_w( be, dn, &matched )) == NULL ) {
  34                 char *matched_dn = NULL;
  35                 struct berval **refs = NULL;
  36
  37                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: no such object %s\n",
  38                         dn, 0, 0);
  39
  40                 if ( matched != NULL ) {
  41                         matched_dn = ch_strdup( matched->e_dn );
  42                         refs = is_entry_referral( matched )
  43                                 ? get_entry_referrals( be, conn, op, matched )
  44                                 : NULL;
  45                         cache_return_entry_r( &li->li_cache, matched );
  46                 } else {
  47                         refs = default_referral;
  48                 }
  49
  50                 send_ldap_result( conn, op, LDAP_REFERRAL,
  51                         matched_dn, NULL, refs, NULL );
  52
  53                 if ( matched != NULL ) {
  54                         ber_bvecfree( refs );
  55                         free( matched_dn );
  56                 }
  57
  58                 return( -1 );
  59         }
  60
  61 #ifdef SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL
  62         if ( ! access_allowed( be, conn, op, e,
  63                 "entry", NULL, ACL_WRITE ) )
  64         {
  65                 Debug(LDAP_DEBUG_ARGS,
  66                         "<=- ldbm_back_delete: insufficient access %s\n",
  67                         dn, 0, 0);
  68                 send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
  69                         NULL, NULL, NULL, NULL );
  70                 goto return_results;
  71         }
  72 #endif
  73
  74     if ( !manageDSAit && is_entry_referral( e ) ) {
  75                 /* parent is a referral, don't allow add */
  76                 /* parent is an alias, don't allow add */
  77                 struct berval **refs = get_entry_referrals( be,
  78                         conn, op, e );
  79
  80                 Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
  81                     0, 0 );
  82
  83                 send_ldap_result( conn, op, LDAP_REFERRAL,
  84                     e->e_dn, NULL, refs, NULL );
  85
  86                 ber_bvecfree( refs );
  87
  88                 rc = 1;
  89                 goto return_results;
  90         }
  91
  92
  93         if ( has_children( be, e ) ) {
  94                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: non leaf %s\n",
  95                         dn, 0, 0);
  96                 send_ldap_result( conn, op, LDAP_NOT_ALLOWED_ON_NONLEAF,
  97                         NULL, NULL, NULL, NULL );
  98                 goto return_results;
  99         }
 100
 101         /* delete from parent's id2children entry */
 102         if( (pdn = dn_parent( be, e->e_ndn )) != NULL ) {
 103                 if( (p = dn2entry_w( be, pdn, &matched )) == NULL) {
 104                         Debug( LDAP_DEBUG_TRACE,
 105                                 "<=- ldbm_back_delete: parent does not exist\n",
 106                                 0, 0, 0);
 107                         send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 108                                 NULL, NULL, NULL, NULL );
 109                         goto return_results;
 110                 }
 111
 112                 /* check parent for "children" acl */
 113                 if ( ! access_allowed( be, conn, op, p,
 114                         "children", NULL, ACL_WRITE ) )
 115                 {
 116                         Debug( LDAP_DEBUG_TRACE,
 117                                 "<=- ldbm_back_delete: no access to parent\n", 0,
 118                                 0, 0 );
 119                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 120                                 NULL, NULL, NULL, NULL );
 121                         goto return_results;
 122                 }
 123
 124         } else {
 125                 /* no parent, must be root to delete */
 126                 if( ! be_isroot( be, op->o_ndn ) ) {
 127                         Debug( LDAP_DEBUG_TRACE,
 128                                 "<=- ldbm_back_delete: no parent & not root\n",
 129                                 0, 0, 0);
 130                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 131                                 NULL, NULL, NULL, NULL );
 132                         goto return_results;
 133                 }
 134
 135                 ldap_pvt_thread_mutex_lock(&li->li_root_mutex);
 136                 rootlock = 1;
 137         }
 138
 139         if ( id2children_remove( be, p, e ) != 0 ) {
 140                 Debug(LDAP_DEBUG_ARGS,
 141                         "<=- ldbm_back_delete: operations error %s\n",
 142                         dn, 0, 0);
 143                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 144                         NULL, NULL, NULL, NULL );
 145                 goto return_results;
 146         }
 147
 148         /* delete from dn2id mapping */
 149         if ( dn2id_delete( be, e->e_ndn ) != 0 ) {
 150                 Debug(LDAP_DEBUG_ARGS,
 151                         "<=- ldbm_back_delete: operations error %s\n",
 152                         dn, 0, 0);
 153                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 154                         NULL, NULL, NULL, NULL );
 155                 goto return_results;
 156         }
 157
 158         /* delete from disk and cache */
 159         if ( id2entry_delete( be, e ) != 0 ) {
 160                 Debug(LDAP_DEBUG_ARGS,
 161                         "<=- ldbm_back_delete: operations error %s\n",
 162                         dn, 0, 0);
 163                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 164                         NULL, NULL, NULL, NULL );
 165                 goto return_results;
 166         }
 167
 168         send_ldap_result( conn, op, LDAP_SUCCESS,
 169                 NULL, NULL, NULL, NULL );
 170         rc = 0;
 171
 172 return_results:;
 173         if ( pdn != NULL ) free(pdn);
 174
 175         if( p != NULL ) {
 176                 /* free parent and writer lock */
 177                 cache_return_entry_w( &li->li_cache, p );
 178         }
 179
 180         if ( rootlock ) {
 181                 /* release root lock */
 182                 ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 183         }
 184
 185         /* free entry and writer lock */
 186         cache_return_entry_w( &li->li_cache, e );
 187
 188         if ( matched != NULL ) free(matched);
 189
 190         return rc;
 191 }