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         AttributeDescription *entry = slap_schema.si_ad_entry;
  36
  37 #ifdef NEW_LOGGING
  38         LDAP_LOG( BACK_LDBM, ENTRY, "ldbm_back_delete: %s\n", dn->bv_val, 0, 0 );
  39 #else
  40         Debug(LDAP_DEBUG_ARGS, "==> ldbm_back_delete: %s\n", dn->bv_val, 0, 0);
  41 #endif
  42
  43         /* grab giant lock for writing */
  44         ldap_pvt_thread_rdwr_wlock(&li->li_giant_rwlock);
  45
  46         /* get entry with writer lock */
  47         if ( (e = dn2entry_w( be, ndn, &matched )) == NULL ) {
  48                 char *matched_dn = NULL;
  49                 BerVarray refs;
  50
  51 #ifdef NEW_LOGGING
  52                 LDAP_LOG( BACK_LDBM, INFO,
  53                         "ldbm_back_delete: no such object %s\n", dn->bv_val, 0, 0 );
  54 #else
  55                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: no such object %s\n",
  56                         dn->bv_val, 0, 0);
  57 #endif
  58
  59                 if ( matched != NULL ) {
  60                         matched_dn = ch_strdup( matched->e_dn );
  61                         refs = is_entry_referral( matched )
  62                                 ? get_entry_referrals( be, conn, op, matched )
  63                                 : NULL;
  64                         cache_return_entry_r( &li->li_cache, matched );
  65
  66                 } else {
  67                         refs = referral_rewrite( default_referral,
  68                                 NULL, dn, LDAP_SCOPE_DEFAULT );
  69                 }
  70
  71                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
  72
  73                 send_ldap_result( conn, op, LDAP_REFERRAL,
  74                         matched_dn, NULL, refs, NULL );
  75
  76                 if ( refs ) ber_bvarray_free( refs );
  77                 free( matched_dn );
  78
  79                 return( -1 );
  80         }
  81
  82         /* check entry for "entry" acl */
  83         if ( ! access_allowed( be, conn, op, e,
  84                 entry, NULL, ACL_WRITE, NULL ) )
  85         {
  86 #ifdef NEW_LOGGING
  87                 LDAP_LOG( BACK_LDBM, ERR,
  88                         "ldbm_back_delete: no write access to entry of (%s)\n",
  89                         dn->bv_val, 0, 0 );
  90 #else
  91                 Debug( LDAP_DEBUG_TRACE,
  92                         "<=- ldbm_back_delete: no write access to entry\n", 0,
  93                         0, 0 );
  94 #endif
  95
  96                 send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
  97                         NULL, "no write access to entry", NULL, NULL );
  98
  99                 rc = 1;
 100                 goto return_results;
 101         }
 102
 103     if ( !manageDSAit && is_entry_referral( e ) ) {
 104                 /* parent is a referral, don't allow add */
 105                 /* parent is an alias, don't allow add */
 106                 BerVarray refs = get_entry_referrals( be,
 107                         conn, op, e );
 108
 109 #ifdef NEW_LOGGING
 110                 LDAP_LOG( BACK_LDBM, INFO,
 111                         "ldbm_back_delete: entry (%s) is a referral.\n", e->e_dn, 0, 0 );
 112 #else
 113                 Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
 114                     0, 0 );
 115 #endif
 116
 117                 send_ldap_result( conn, op, LDAP_REFERRAL,
 118                     e->e_dn, NULL, refs, NULL );
 119
 120                 if ( refs ) ber_bvarray_free( refs );
 121
 122                 rc = 1;
 123                 goto return_results;
 124         }
 125
 126         if ( has_children( be, e ) ) {
 127 #ifdef NEW_LOGGING
 128                 LDAP_LOG( BACK_LDBM, ERR,
 129                            "ldbm_back_delete: (%s) is a non-leaf node.\n", dn->bv_val, 0,0);
 130 #else
 131                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: non leaf %s\n",
 132                         dn->bv_val, 0, 0);
 133 #endif
 134
 135                 send_ldap_result( conn, op, LDAP_NOT_ALLOWED_ON_NONLEAF,
 136                         NULL, "subtree delete not supported", NULL, NULL );
 137                 goto return_results;
 138         }
 139
 140         /* delete from parent's id2children entry */
 141         if( !be_issuffix( be, &e->e_nname ) && (dnParent( &e->e_nname, &pdn ),
 142                 pdn.bv_len) ) {
 143                 if( (p = dn2entry_w( be, &pdn, NULL )) == NULL) {
 144 #ifdef NEW_LOGGING
 145                         LDAP_LOG( BACK_LDBM, ERR,
 146                                 "ldbm_back_delete: parent of (%s) does not exist\n", dn, 0, 0 );
 147 #else
 148                         Debug( LDAP_DEBUG_TRACE,
 149                                 "<=- ldbm_back_delete: parent does not exist\n",
 150                                 0, 0, 0);
 151 #endif
 152
 153                         send_ldap_result( conn, op, LDAP_OTHER,
 154                                 NULL, "could not locate parent of entry", NULL, NULL );
 155                         goto return_results;
 156                 }
 157
 158                 /* check parent for "children" acl */
 159                 if ( ! access_allowed( be, conn, op, p,
 160                         children, NULL, ACL_WRITE, NULL ) )
 161                 {
 162 #ifdef NEW_LOGGING
 163                         LDAP_LOG( BACK_LDBM, ERR,
 164                                 "ldbm_back_delete: no access to parent of (%s)\n",
 165                                 dn->bv_val, 0, 0 );
 166 #else
 167                         Debug( LDAP_DEBUG_TRACE,
 168                                 "<=- ldbm_back_delete: no access to parent\n", 0,
 169                                 0, 0 );
 170 #endif
 171
 172                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 173                                 NULL, "no write access to parent", NULL, NULL );
 174                         goto return_results;
 175                 }
 176
 177         } else {
 178                 /* no parent, must be root to delete */
 179                 if( ! be_isroot( be, &op->o_ndn ) ) {
 180                         if ( be_issuffix( be, (struct berval *)&slap_empty_bv ) || be_isupdate( be, &op->o_ndn ) ) {
 181                                 p = (Entry *)&slap_entry_root;
 182
 183                                 rc = access_allowed( be, conn, op, p,
 184                                         children, NULL, ACL_WRITE, NULL );
 185                                 p = NULL;
 186
 187                                 /* check parent for "children" acl */
 188                                 if ( ! rc ) {
 189 #ifdef NEW_LOGGING
 190                                         LDAP_LOG( BACK_LDBM, ERR,
 191                                                 "ldbm_back_delete: no access "
 192                                                 "to parent of ("")\n", 0, 0, 0 );
 193 #else
 194                                         Debug( LDAP_DEBUG_TRACE,
 195                                                 "<=- ldbm_back_delete: no "
 196                                                 "access to parent\n", 0, 0, 0 );
 197 #endif
 198
 199                                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 200                                                 NULL, "no write access to parent", NULL, NULL );
 201                                         goto return_results;
 202                                 }
 203
 204                         } else {
 205 #ifdef NEW_LOGGING
 206                                 LDAP_LOG( BACK_LDBM, ERR,
 207                                         "ldbm_back_delete: (%s) has no "
 208                                         "parent & not a root.\n", dn, 0, 0 );
 209 #else
 210                                 Debug( LDAP_DEBUG_TRACE,
 211                                         "<=- ldbm_back_delete: no parent & "
 212                                         "not root\n", 0, 0, 0);
 213 #endif
 214
 215                                 send_ldap_result( conn, op,
 216                                         LDAP_INSUFFICIENT_ACCESS,
 217                                         NULL, NULL, NULL, NULL );
 218                                 goto return_results;
 219                         }
 220                 }
 221         }
 222
 223         /* delete from dn2id mapping */
 224         if ( dn2id_delete( be, &e->e_nname, e->e_id ) != 0 ) {
 225 #ifdef NEW_LOGGING
 226                 LDAP_LOG( BACK_LDBM, ERR,
 227                         "ldbm_back_delete: (%s) operations error\n", dn->bv_val, 0, 0 );
 228 #else
 229                 Debug(LDAP_DEBUG_ARGS,
 230                         "<=- ldbm_back_delete: operations error %s\n",
 231                         dn->bv_val, 0, 0);
 232 #endif
 233
 234                 send_ldap_result( conn, op, LDAP_OTHER,
 235                         NULL, "DN index delete failed", NULL, NULL );
 236                 goto return_results;
 237         }
 238
 239         /* delete from disk and cache */
 240         if ( id2entry_delete( be, e ) != 0 ) {
 241 #ifdef NEW_LOGGING
 242                 LDAP_LOG( BACK_LDBM, ERR,
 243                         "ldbm_back_delete: (%s) operations error\n", dn->bv_val, 0, 0 );
 244 #else
 245                 Debug(LDAP_DEBUG_ARGS,
 246                         "<=- ldbm_back_delete: operations error %s\n",
 247                         dn->bv_val, 0, 0);
 248 #endif
 249
 250                 send_ldap_result( conn, op, LDAP_OTHER,
 251                         NULL, "entry delete failed", NULL, NULL );
 252                 goto return_results;
 253         }
 254
 255         /* delete attribute indices */
 256         (void) index_entry_del( be, e, e->e_attrs );
 257
 258         send_ldap_result( conn, op, LDAP_SUCCESS,
 259                 NULL, NULL, NULL, NULL );
 260         rc = 0;
 261
 262 return_results:;
 263         if( p != NULL ) {
 264                 /* free parent and writer lock */
 265                 cache_return_entry_w( &li->li_cache, p );
 266         }
 267
 268         /* free entry and writer lock */
 269         cache_return_entry_w( &li->li_cache, e );
 270
 271         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 272
 273         return rc;
 274 }