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

   1 /* delete.c - ldbm backend delete routine */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2003 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 #ifdef LDAP_CACHING
  84         if( !op->o_caching_on ) {
  85 #endif /* LDAP_CACHING */
  86         if ( ! access_allowed( be, conn, op, e,
  87                 entry, NULL, ACL_WRITE, NULL ) )
  88         {
  89 #ifdef NEW_LOGGING
  90                 LDAP_LOG( BACK_LDBM, ERR,
  91                         "ldbm_back_delete: no write access to entry of (%s)\n",
  92                         dn->bv_val, 0, 0 );
  93 #else
  94                 Debug( LDAP_DEBUG_TRACE,
  95                         "<=- ldbm_back_delete: no write access to entry\n", 0,
  96                         0, 0 );
  97 #endif
  98
  99                 send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 100                         NULL, "no write access to entry", NULL, NULL );
 101
 102                 rc = 1;
 103                 goto return_results;
 104         }
 105
 106         if ( !manageDSAit && is_entry_referral( e ) ) {
 107                 /* parent is a referral, don't allow add */
 108                 /* parent is an alias, don't allow add */
 109                 BerVarray refs = get_entry_referrals( be,
 110                         conn, op, e );
 111
 112 #ifdef NEW_LOGGING
 113                 LDAP_LOG( BACK_LDBM, INFO,
 114                         "ldbm_back_delete: entry (%s) is a referral.\n", e->e_dn, 0, 0 );
 115 #else
 116                 Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
 117                     0, 0 );
 118 #endif
 119
 120                 send_ldap_result( conn, op, LDAP_REFERRAL,
 121                     e->e_dn, NULL, refs, NULL );
 122
 123                 if ( refs ) ber_bvarray_free( refs );
 124
 125                 rc = 1;
 126                 goto return_results;
 127         }
 128
 129         if ( has_children( be, e ) ) {
 130 #ifdef NEW_LOGGING
 131                 LDAP_LOG( BACK_LDBM, ERR,
 132                            "ldbm_back_delete: (%s) is a non-leaf node.\n", dn->bv_val, 0,0);
 133 #else
 134                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: non leaf %s\n",
 135                         dn->bv_val, 0, 0);
 136 #endif
 137
 138                 send_ldap_result( conn, op, LDAP_NOT_ALLOWED_ON_NONLEAF,
 139                         NULL, "subtree delete not supported", NULL, NULL );
 140                 goto return_results;
 141         }
 142
 143         /* delete from parent's id2children entry */
 144         if( !be_issuffix( be, &e->e_nname ) && (dnParent( &e->e_nname, &pdn ),
 145                 pdn.bv_len) ) {
 146                 if( (p = dn2entry_w( be, &pdn, NULL )) == NULL) {
 147 #ifdef NEW_LOGGING
 148                         LDAP_LOG( BACK_LDBM, ERR,
 149                                 "ldbm_back_delete: parent of (%s) does not exist\n", dn, 0, 0 );
 150 #else
 151                         Debug( LDAP_DEBUG_TRACE,
 152                                 "<=- ldbm_back_delete: parent does not exist\n",
 153                                 0, 0, 0);
 154 #endif
 155
 156                         send_ldap_result( conn, op, LDAP_OTHER,
 157                                 NULL, "could not locate parent of entry", NULL, NULL );
 158                         goto return_results;
 159                 }
 160
 161                 /* check parent for "children" acl */
 162                 if ( ! access_allowed( be, conn, op, p,
 163                         children, NULL, ACL_WRITE, NULL ) )
 164                 {
 165 #ifdef NEW_LOGGING
 166                         LDAP_LOG( BACK_LDBM, ERR,
 167                                 "ldbm_back_delete: no access to parent of (%s)\n",
 168                                 dn->bv_val, 0, 0 );
 169 #else
 170                         Debug( LDAP_DEBUG_TRACE,
 171                                 "<=- ldbm_back_delete: no access to parent\n", 0,
 172                                 0, 0 );
 173 #endif
 174
 175                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 176                                 NULL, "no write access to parent", NULL, NULL );
 177                         goto return_results;
 178                 }
 179
 180         } else {
 181                 /* no parent, must be root to delete */
 182                 if( ! be_isroot( be, &op->o_ndn ) ) {
 183                         if ( be_issuffix( be, (struct berval *)&slap_empty_bv ) || be_isupdate( be, &op->o_ndn ) ) {
 184                                 p = (Entry *)&slap_entry_root;
 185
 186                                 rc = access_allowed( be, conn, op, p,
 187                                         children, NULL, ACL_WRITE, NULL );
 188                                 p = NULL;
 189
 190                                 /* check parent for "children" acl */
 191                                 if ( ! rc ) {
 192 #ifdef NEW_LOGGING
 193                                         LDAP_LOG( BACK_LDBM, ERR,
 194                                                 "ldbm_back_delete: no access "
 195                                                 "to parent of ("")\n", 0, 0, 0 );
 196 #else
 197                                         Debug( LDAP_DEBUG_TRACE,
 198                                                 "<=- ldbm_back_delete: no "
 199                                                 "access to parent\n", 0, 0, 0 );
 200 #endif
 201
 202                                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
 203                                                 NULL, "no write access to parent", NULL, NULL );
 204                                         goto return_results;
 205                                 }
 206
 207                         } else {
 208 #ifdef NEW_LOGGING
 209                                 LDAP_LOG( BACK_LDBM, ERR,
 210                                         "ldbm_back_delete: (%s) has no "
 211                                         "parent & not a root.\n", dn, 0, 0 );
 212 #else
 213                                 Debug( LDAP_DEBUG_TRACE,
 214                                         "<=- ldbm_back_delete: no parent & "
 215                                         "not root\n", 0, 0, 0);
 216 #endif
 217
 218                                 send_ldap_result( conn, op,
 219                                         LDAP_INSUFFICIENT_ACCESS,
 220                                         NULL, NULL, NULL, NULL );
 221                                 goto return_results;
 222                         }
 223                 }
 224         }
 225 #ifdef LDAP_CACHING
 226         }
 227 #endif /* LDAP_CACHING */
 228
 229         /* delete from dn2id mapping */
 230         if ( dn2id_delete( be, &e->e_nname, e->e_id ) != 0 ) {
 231 #ifdef NEW_LOGGING
 232                 LDAP_LOG( BACK_LDBM, ERR,
 233                         "ldbm_back_delete: (%s) operations error\n", dn->bv_val, 0, 0 );
 234 #else
 235                 Debug(LDAP_DEBUG_ARGS,
 236                         "<=- ldbm_back_delete: operations error %s\n",
 237                         dn->bv_val, 0, 0);
 238 #endif
 239
 240                 send_ldap_result( conn, op, LDAP_OTHER,
 241                         NULL, "DN index delete failed", NULL, NULL );
 242                 goto return_results;
 243         }
 244
 245         /* delete from disk and cache */
 246         if ( id2entry_delete( be, e ) != 0 ) {
 247 #ifdef NEW_LOGGING
 248                 LDAP_LOG( BACK_LDBM, ERR,
 249                         "ldbm_back_delete: (%s) operations error\n", dn->bv_val, 0, 0 );
 250 #else
 251                 Debug(LDAP_DEBUG_ARGS,
 252                         "<=- ldbm_back_delete: operations error %s\n",
 253                         dn->bv_val, 0, 0);
 254 #endif
 255
 256                 send_ldap_result( conn, op, LDAP_OTHER,
 257                         NULL, "entry delete failed", NULL, NULL );
 258                 goto return_results;
 259         }
 260
 261         /* delete attribute indices */
 262         (void) index_entry_del( be, e, e->e_attrs );
 263
 264         send_ldap_result( conn, op, LDAP_SUCCESS,
 265                 NULL, NULL, NULL, NULL );
 266         rc = 0;
 267
 268 return_results:;
 269         if( p != NULL ) {
 270                 /* free parent and writer lock */
 271                 cache_return_entry_w( &li->li_cache, p );
 272         }
 273
 274         /* free entry and writer lock */
 275         cache_return_entry_w( &li->li_cache, e );
 276
 277         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 278
 279         return rc;
 280 }