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

   1 /* delete.c - ldbm backend delete routine */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2002 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         struct berval   pdn;
  31         Entry   *e, *p = NULL;
  32         int     rc = -1;
  33         int             manageDSAit = get_manageDSAit( op );
  34         AttributeDescription *children = slap_schema.si_ad_children;
  35
  36 #ifdef NEW_LOGGING
  37         LDAP_LOG( BACK_LDBM, ENTRY, "ldbm_back_delete: %s\n", dn->bv_val, 0, 0 );
  38 #else
  39         Debug(LDAP_DEBUG_ARGS, "==> ldbm_back_delete: %s\n", dn->bv_val, 0, 0);
  40 #endif
  41
  42         /* grab giant lock for writing */
  43         ldap_pvt_thread_rdwr_wlock(&li->li_giant_rwlock);
  44
  45         /* get entry with writer lock */
  46         if ( (e = dn2entry_w( be, ndn, &matched )) == NULL ) {
  47                 char *matched_dn = NULL;
  48                 BerVarray refs;
  49
  50 #ifdef NEW_LOGGING
  51                 LDAP_LOG( BACK_LDBM, INFO,
  52                         "ldbm_back_delete: no such object %s\n", dn->bv_val, 0, 0 );
  53 #else
  54                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: no such object %s\n",
  55                         dn->bv_val, 0, 0);
  56 #endif
  57
  58                 if ( matched != NULL ) {
  59                         matched_dn = ch_strdup( matched->e_dn );
  60                         refs = is_entry_referral( matched )
  61                                 ? get_entry_referrals( be, conn, op, matched )
  62                                 : NULL;
  63                         cache_return_entry_r( &li->li_cache, matched );
  64
  65                 } else {
  66                         refs = referral_rewrite( default_referral,
  67                                 NULL, dn, LDAP_SCOPE_DEFAULT );
  68                 }
  69
  70                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
  71
  72                 send_ldap_result( conn, op, LDAP_REFERRAL,
  73                         matched_dn, NULL, refs, NULL );
  74
  75                 if ( refs ) ber_bvarray_free( refs );
  76                 free( matched_dn );
  77
  78                 return( -1 );
  79         }
  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                 BerVarray refs = get_entry_referrals( be,
  85                         conn, op, e );
  86
  87 #ifdef NEW_LOGGING
  88                 LDAP_LOG( BACK_LDBM, INFO,
  89                         "ldbm_back_delete: entry (%s) is a referral.\n", e->e_dn, 0, 0 );
  90 #else
  91                 Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
  92                     0, 0 );
  93 #endif
  94
  95                 send_ldap_result( conn, op, LDAP_REFERRAL,
  96                     e->e_dn, NULL, refs, NULL );
  97
  98                 if ( refs ) ber_bvarray_free( refs );
  99
 100                 rc = 1;
 101                 goto return_results;
 102         }
 103
 104
 105         if ( has_children( be, e ) ) {
 106 #ifdef NEW_LOGGING
 107                 LDAP_LOG( BACK_LDBM, ERR,
 108                            "ldbm_back_delete: (%s) is a non-leaf node.\n", dn->bv_val, 0,0);
 109 #else
 110                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: non leaf %s\n",
 111                         dn->bv_val, 0, 0);
 112 #endif
 113
 114                 send_ldap_result( conn, op, LDAP_NOT_ALLOWED_ON_NONLEAF,
 115                         NULL, "subtree delete not supported", NULL, NULL );
 116                 goto return_results;
 117         }
 118
 119         /* delete from parent's id2children entry */
 120         if( !be_issuffix( be, &e->e_nname ) && (dnParent( &e->e_nname, &pdn ),
 121                 pdn.bv_len) ) {
 122                 if( (p = dn2entry_w( be, &pdn, NULL )) == NULL) {
 123 #ifdef NEW_LOGGING
 124                         LDAP_LOG( BACK_LDBM, ERR,
 125                                 "ldbm_back_delete: parent of (%s) does not exist\n", dn, 0, 0 );
 126 #else
 127                         Debug( LDAP_DEBUG_TRACE,
 128                                 "<=- ldbm_back_delete: parent does not exist\n",
 129                                 0, 0, 0);
 130 #endif
 131
 132                         send_ldap_result( conn, op, LDAP_OTHER,
 133                                 NULL, "could not locate parent of entry", NULL, NULL );
 134                         goto return_results;
 135                 }
 136
 137                 /* check parent for "children" acl */
 138                 if ( ! access_allowed( be, conn, op, p,
 139                         children, NULL, ACL_WRITE, NULL ) )
 140                 {
 141 #ifdef NEW_LOGGING
 142                         LDAP_LOG( BACK_LDBM, ERR,
 143                                 "ldbm_back_delete: no access to parent of (%s)\n",
 144                                 dn->bv_val, 0, 0 );
 145 #else
 146                         Debug( LDAP_DEBUG_TRACE,
 147                                 "<=- ldbm_back_delete: no access to parent\n", 0,
 148                                 0, 0 );
 149 #endif
 150
 151                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 152                                 NULL, NULL, NULL, NULL );
 153                         goto return_results;
 154                 }
 155
 156         } else {
 157                 /* no parent, must be root to delete */
 158                 if( ! be_isroot( be, &op->o_ndn ) ) {
 159                         if ( be_issuffix( be, (struct berval *)&slap_empty_bv ) || be_isupdate( be, &op->o_ndn ) ) {
 160                                 p = (Entry *)&slap_entry_root;
 161
 162                                 rc = access_allowed( be, conn, op, p,
 163                                         children, NULL, ACL_WRITE, NULL );
 164                                 p = NULL;
 165
 166                                 /* check parent for "children" acl */
 167                                 if ( ! rc ) {
 168 #ifdef NEW_LOGGING
 169                                         LDAP_LOG( BACK_LDBM, ERR,
 170                                                 "ldbm_back_delete: no access "
 171                                                 "to parent of ("")\n", 0, 0, 0 );
 172 #else
 173                                         Debug( LDAP_DEBUG_TRACE,
 174                                                 "<=- ldbm_back_delete: no "
 175                                                 "access to parent\n", 0, 0, 0 );
 176 #endif
 177
 178                                         send_ldap_result( conn, op,
 179                                                 LDAP_INSUFFICIENT_ACCESS,
 180                                                 NULL, NULL, NULL, NULL );
 181                                         goto return_results;
 182                                 }
 183
 184                         } else {
 185 #ifdef NEW_LOGGING
 186                                 LDAP_LOG( BACK_LDBM, ERR,
 187                                         "ldbm_back_delete: (%s) has no "
 188                                         "parent & not a root.\n", dn, 0, 0 );
 189 #else
 190                                 Debug( LDAP_DEBUG_TRACE,
 191                                         "<=- ldbm_back_delete: no parent & "
 192                                         "not root\n", 0, 0, 0);
 193 #endif
 194
 195                                 send_ldap_result( conn, op,
 196                                         LDAP_INSUFFICIENT_ACCESS,
 197                                         NULL, NULL, NULL, NULL );
 198                                 goto return_results;
 199                         }
 200                 }
 201         }
 202
 203         /* delete from dn2id mapping */
 204         if ( dn2id_delete( be, &e->e_nname, e->e_id ) != 0 ) {
 205 #ifdef NEW_LOGGING
 206                 LDAP_LOG( BACK_LDBM, ERR,
 207                         "ldbm_back_delete: (%s) operations error\n", dn->bv_val, 0, 0 );
 208 #else
 209                 Debug(LDAP_DEBUG_ARGS,
 210                         "<=- ldbm_back_delete: operations error %s\n",
 211                         dn->bv_val, 0, 0);
 212 #endif
 213
 214                 send_ldap_result( conn, op, LDAP_OTHER,
 215                         NULL, "DN index delete failed", NULL, NULL );
 216                 goto return_results;
 217         }
 218
 219         /* delete from disk and cache */
 220         if ( id2entry_delete( be, e ) != 0 ) {
 221 #ifdef NEW_LOGGING
 222                 LDAP_LOG( BACK_LDBM, ERR,
 223                         "ldbm_back_delete: (%s) operations error\n", dn->bv_val, 0, 0 );
 224 #else
 225                 Debug(LDAP_DEBUG_ARGS,
 226                         "<=- ldbm_back_delete: operations error %s\n",
 227                         dn->bv_val, 0, 0);
 228 #endif
 229
 230                 send_ldap_result( conn, op, LDAP_OTHER,
 231                         NULL, "entry delete failed", NULL, NULL );
 232                 goto return_results;
 233         }
 234
 235         /* delete attribute indices */
 236         (void) index_entry_del( be, e, e->e_attrs );
 237
 238         send_ldap_result( conn, op, LDAP_SUCCESS,
 239                 NULL, NULL, NULL, NULL );
 240         rc = 0;
 241
 242 return_results:;
 243         if( p != NULL ) {
 244                 /* free parent and writer lock */
 245                 cache_return_entry_w( &li->li_cache, p );
 246         }
 247
 248         /* free entry and writer lock */
 249         cache_return_entry_w( &li->li_cache, e );
 250
 251         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 252
 253         return rc;
 254 }