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 #ifdef NEW_LOGGING
  38         LDAP_LOG(( "backend", LDAP_LEVEL_ENTRY,
  39                 "ldbm_back_delete: %s\n", dn ));
  40 #else
  41         Debug(LDAP_DEBUG_ARGS, "==> ldbm_back_delete: %s\n", dn, 0, 0);
  42 #endif
  43
  44         /* get entry with writer lock */
  45         if ( (e = dn2entry_w( be, ndn, &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 ));
  52 #else
  53                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: no such object %s\n",
  54                         dn, 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                                         dn, LDAP_SCOPE_DEFAULT )
  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                 send_ldap_result( conn, op, LDAP_REFERRAL,
  71                         matched_dn, NULL, refs, NULL );
  72
  73                 ber_bvecfree( refs );
  74                 free( matched_dn );
  75
  76                 return( -1 );
  77         }
  78
  79     if ( !manageDSAit && is_entry_referral( e ) ) {
  80                 /* parent is a referral, don't allow add */
  81                 /* parent is an alias, don't allow add */
  82                 struct berval **refs = get_entry_referrals( be,
  83                         conn, op, e, dn, LDAP_SCOPE_DEFAULT );
  84
  85 #ifdef NEW_LOGGING
  86                 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
  87                            "ldbm_back_delete: entry (%s) is a referral.\n",
  88                            e->e_dn ));
  89 #else
  90                 Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
  91                     0, 0 );
  92 #endif
  93
  94
  95                 send_ldap_result( conn, op, LDAP_REFERRAL,
  96                     e->e_dn, NULL, refs, NULL );
  97
  98                 ber_bvecfree( 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(( "backend", LDAP_LEVEL_ERR,
 108                            "ldbm_back_delete: (%s) is a non-leaf node.\n", dn ));
 109 #else
 110                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: non leaf %s\n",
 111                         dn, 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( (pdn = dn_parent( be, e->e_ndn )) != NULL && pdn[ 0 ] != '\0' ) {
 121                 if( (p = dn2entry_w( be, pdn, NULL )) == NULL) {
 122 #ifdef NEW_LOGGING
 123                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 124                                    "ldbm_back_delete: parent of (%s) does not exist\n", dn ));
 125 #else
 126                         Debug( LDAP_DEBUG_TRACE,
 127                                 "<=- ldbm_back_delete: parent does not exist\n",
 128                                 0, 0, 0);
 129 #endif
 130
 131                         send_ldap_result( conn, op, LDAP_OTHER,
 132                                 NULL, "could not locate parent of entry", NULL, NULL );
 133                         goto return_results;
 134                 }
 135
 136                 /* check parent for "children" acl */
 137                 if ( ! access_allowed( be, conn, op, p,
 138                         children, NULL, ACL_WRITE ) )
 139                 {
 140 #ifdef NEW_LOGGING
 141                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 142                                    "ldbm_back_delete: no access to parent of (%s)\n", dn ));
 143 #else
 144                         Debug( LDAP_DEBUG_TRACE,
 145                                 "<=- ldbm_back_delete: no access to parent\n", 0,
 146                                 0, 0 );
 147 #endif
 148
 149                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 150                                 NULL, NULL, NULL, NULL );
 151                         goto return_results;
 152                 }
 153
 154         } else {
 155                 /* no parent, must be root to delete */
 156                 if( ! be_isroot( be, op->o_ndn ) ) {
 157                         if ( be_issuffix( be, "" )
 158                                         || be_isupdate( be, op->o_ndn ) ) {
 159                                 p = (Entry *)&slap_entry_root;
 160
 161                                 rc = access_allowed( be, conn, op, p,
 162                                                 children, NULL, ACL_WRITE );
 163                                 p = NULL;
 164
 165                                 /* check parent for "children" acl */
 166                                 if ( ! rc ) {
 167 #ifdef NEW_LOGGING
 168                                         LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 169                                                 "ldbm_back_delete: no access "
 170                                                 "to parent of ("")\n" ));
 171 #else
 172                                         Debug( LDAP_DEBUG_TRACE,
 173                                                 "<=- ldbm_back_delete: no "
 174                                                 "access to parent\n", 0, 0, 0 );
 175 #endif
 176
 177                                         send_ldap_result( conn, op,
 178                                                 LDAP_INSUFFICIENT_ACCESS,
 179                                                 NULL, NULL, NULL, NULL );
 180                                         goto return_results;
 181                                 }
 182
 183                         } else {
 184 #ifdef NEW_LOGGING
 185                                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 186                                            "ldbm_back_delete: (%s) has no "
 187                                            "parent & not a root.\n", dn ));
 188 #else
 189                                 Debug( LDAP_DEBUG_TRACE,
 190                                         "<=- ldbm_back_delete: no parent & "
 191                                         "not root\n", 0, 0, 0);
 192 #endif
 193
 194                                 send_ldap_result( conn, op,
 195                                         LDAP_INSUFFICIENT_ACCESS,
 196                                         NULL, NULL, NULL, NULL );
 197                                 goto return_results;
 198                         }
 199                 }
 200
 201                 ldap_pvt_thread_mutex_lock(&li->li_root_mutex);
 202                 rootlock = 1;
 203         }
 204
 205         /* delete from dn2id mapping */
 206         if ( dn2id_delete( be, e->e_ndn, e->e_id ) != 0 ) {
 207 #ifdef NEW_LOGGING
 208                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 209                            "ldbm_back_delete: (%s) operations error\n", dn ));
 210 #else
 211                 Debug(LDAP_DEBUG_ARGS,
 212                         "<=- ldbm_back_delete: operations error %s\n",
 213                         dn, 0, 0);
 214 #endif
 215
 216                 send_ldap_result( conn, op, LDAP_OTHER,
 217                         NULL, "DN index delete failed", NULL, NULL );
 218                 goto return_results;
 219         }
 220
 221         /* delete from disk and cache */
 222         if ( id2entry_delete( be, e ) != 0 ) {
 223 #ifdef NEW_LOGGING
 224                 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
 225                            "ldbm_back_delete: (%s) operations error\n",
 226                            dn ));
 227 #else
 228                 Debug(LDAP_DEBUG_ARGS,
 229                         "<=- ldbm_back_delete: operations error %s\n",
 230                         dn, 0, 0);
 231 #endif
 232
 233                 send_ldap_result( conn, op, LDAP_OTHER,
 234                         NULL, "entry delete failed", NULL, NULL );
 235                 goto return_results;
 236         }
 237
 238         /* delete attribute indices */
 239         (void) index_entry_del( be, e, e->e_attrs );
 240
 241         send_ldap_result( conn, op, LDAP_SUCCESS,
 242                 NULL, NULL, NULL, NULL );
 243         rc = 0;
 244
 245 return_results:;
 246         if ( pdn != NULL ) free(pdn);
 247
 248         if( p != NULL ) {
 249                 /* free parent and writer lock */
 250                 cache_return_entry_w( &li->li_cache, p );
 251         }
 252
 253         if ( rootlock ) {
 254                 /* release root lock */
 255                 ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 256         }
 257
 258         /* free entry and writer lock */
 259         cache_return_entry_w( &li->li_cache, e );
 260
 261         return rc;
 262 }