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     struct berval       *dn,
  25     struct berval       *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 #ifdef NEW_LOGGING
  38         LDAP_LOG(( "backend", LDAP_LEVEL_ENTRY,
  39                 "ldbm_back_delete: %s\n", dn->bv_val ));
  40 #else
  41         Debug(LDAP_DEBUG_ARGS, "==> ldbm_back_delete: %s\n", dn->bv_val, 0, 0);
  42 #endif
  43
  44         /* get entry with writer lock */
  45         if ( (e = dn2entry_w( be, ndn->bv_val, &matched )) == NULL ) {
  46                 char *matched_dn = NULL;
  47                 struct berval **refs;
  48
  49 #ifdef NEW_LOGGING
  50                 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
  51                         "ldbm_back_delete: no such object %s\n", dn->bv_val ));
  52 #else
  53                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: no such object %s\n",
  54                         dn->bv_val, 0, 0);
  55 #endif
  56
  57                 if ( matched != NULL ) {
  58                         matched_dn = ch_strdup( matched->e_dn );
  59                         refs = is_entry_referral( matched )
  60                                 ? get_entry_referrals( be, conn, op, matched )
  61                                 : NULL;
  62                         cache_return_entry_r( &li->li_cache, matched );
  63
  64                 } else {
  65                         refs = referral_rewrite( default_referral,
  66                                 NULL, dn, LDAP_SCOPE_DEFAULT );
  67                 }
  68
  69                 send_ldap_result( conn, op, LDAP_REFERRAL,
  70                         matched_dn, NULL, refs, NULL );
  71
  72                 ber_bvecfree( refs );
  73                 free( matched_dn );
  74
  75                 return( -1 );
  76         }
  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 #ifdef NEW_LOGGING
  85                 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
  86                         "ldbm_back_delete: entry (%s) is a referral.\n",
  87                         e->e_dn ));
  88 #else
  89                 Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
  90                     0, 0 );
  91 #endif
  92
  93                 send_ldap_result( conn, op, LDAP_REFERRAL,
  94                     e->e_dn, NULL, refs, NULL );
  95
  96                 ber_bvecfree( refs );
  97
  98                 rc = 1;
  99                 goto return_results;
 100         }
 101
 102
 103         if ( has_children( be, e ) ) {
 104 #ifdef NEW_LOGGING
 105                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 106                            "ldbm_back_delete: (%s) is a non-leaf node.\n", dn ));
 107 #else
 108                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: non leaf %s\n",
 109                         dn, 0, 0);
 110 #endif
 111
 112                 send_ldap_result( conn, op, LDAP_NOT_ALLOWED_ON_NONLEAF,
 113                         NULL, "subtree delete not supported", NULL, NULL );
 114                 goto return_results;
 115         }
 116
 117         /* delete from parent's id2children entry */
 118         if( (pdn = dn_parent( be, e->e_ndn )) != NULL && pdn[ 0 ] != '\0' ) {
 119                 if( (p = dn2entry_w( be, pdn, NULL )) == NULL) {
 120 #ifdef NEW_LOGGING
 121                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 122                                 "ldbm_back_delete: parent of (%s) does not exist\n", dn ));
 123 #else
 124                         Debug( LDAP_DEBUG_TRACE,
 125                                 "<=- ldbm_back_delete: parent does not exist\n",
 126                                 0, 0, 0);
 127 #endif
 128
 129                         send_ldap_result( conn, op, LDAP_OTHER,
 130                                 NULL, "could not locate parent of entry", NULL, NULL );
 131                         goto return_results;
 132                 }
 133
 134                 /* check parent for "children" acl */
 135                 if ( ! access_allowed( be, conn, op, p,
 136                         children, NULL, ACL_WRITE ) )
 137                 {
 138 #ifdef NEW_LOGGING
 139                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 140                                 "ldbm_back_delete: no access to parent of (%s)\n",
 141                                 dn->bv_val ));
 142 #else
 143                         Debug( LDAP_DEBUG_TRACE,
 144                                 "<=- ldbm_back_delete: no access to parent\n", 0,
 145                                 0, 0 );
 146 #endif
 147
 148                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 149                                 NULL, NULL, NULL, NULL );
 150                         goto return_results;
 151                 }
 152
 153         } else {
 154                 /* no parent, must be root to delete */
 155                 if( ! be_isroot( be, &op->o_ndn ) ) {
 156                         if ( be_issuffix( be, "" ) || be_isupdate( be, &op->o_ndn ) ) {
 157                                 p = (Entry *)&slap_entry_root;
 158
 159                                 rc = access_allowed( be, conn, op, p,
 160                                         children, NULL, ACL_WRITE );
 161                                 p = NULL;
 162
 163                                 /* check parent for "children" acl */
 164                                 if ( ! rc ) {
 165 #ifdef NEW_LOGGING
 166                                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 167                                                 "ldbm_back_delete: no access "
 168                                                 "to parent of ("")\n" ));
 169 #else
 170                                         Debug( LDAP_DEBUG_TRACE,
 171                                                 "<=- ldbm_back_delete: no "
 172                                                 "access to parent\n", 0, 0, 0 );
 173 #endif
 174
 175                                         send_ldap_result( conn, op,
 176                                                 LDAP_INSUFFICIENT_ACCESS,
 177                                                 NULL, NULL, NULL, NULL );
 178                                         goto return_results;
 179                                 }
 180
 181                         } else {
 182 #ifdef NEW_LOGGING
 183                                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 184                                         "ldbm_back_delete: (%s) has no "
 185                                         "parent & not a root.\n", dn ));
 186 #else
 187                                 Debug( LDAP_DEBUG_TRACE,
 188                                         "<=- ldbm_back_delete: no parent & "
 189                                         "not root\n", 0, 0, 0);
 190 #endif
 191
 192                                 send_ldap_result( conn, op,
 193                                         LDAP_INSUFFICIENT_ACCESS,
 194                                         NULL, NULL, NULL, NULL );
 195                                 goto return_results;
 196                         }
 197                 }
 198
 199                 ldap_pvt_thread_mutex_lock(&li->li_root_mutex);
 200                 rootlock = 1;
 201         }
 202
 203         /* delete from dn2id mapping */
 204         if ( dn2id_delete( be, e->e_ndn, e->e_id ) != 0 ) {
 205 #ifdef NEW_LOGGING
 206                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 207                         "ldbm_back_delete: (%s) operations error\n",
 208                         dn->bv_val ));
 209 #else
 210                 Debug(LDAP_DEBUG_ARGS,
 211                         "<=- ldbm_back_delete: operations error %s\n",
 212                         dn->bv_val, 0, 0);
 213 #endif
 214
 215                 send_ldap_result( conn, op, LDAP_OTHER,
 216                         NULL, "DN index delete failed", NULL, NULL );
 217                 goto return_results;
 218         }
 219
 220         /* delete from disk and cache */
 221         if ( id2entry_delete( be, e ) != 0 ) {
 222 #ifdef NEW_LOGGING
 223                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 224                         "ldbm_back_delete: (%s) operations error\n",
 225                         dn->bv_val ));
 226 #else
 227                 Debug(LDAP_DEBUG_ARGS,
 228                         "<=- ldbm_back_delete: operations error %s\n",
 229                         dn->bv_val, 0, 0);
 230 #endif
 231
 232                 send_ldap_result( conn, op, LDAP_OTHER,
 233                         NULL, "entry delete failed", NULL, NULL );
 234                 goto return_results;
 235         }
 236
 237         /* delete attribute indices */
 238         (void) index_entry_del( be, e, e->e_attrs );
 239
 240         send_ldap_result( conn, op, LDAP_SUCCESS,
 241                 NULL, NULL, NULL, NULL );
 242         rc = 0;
 243
 244 return_results:;
 245         if( p != NULL ) {
 246                 /* free parent and writer lock */
 247                 cache_return_entry_w( &li->li_cache, p );
 248         }
 249
 250         if ( rootlock ) {
 251                 /* release root lock */
 252                 ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 253         }
 254
 255         /* free entry and writer lock */
 256         cache_return_entry_w( &li->li_cache, e );
 257
 258         return rc;
 259 }