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     Operation   *op,
  22     SlapReply   *rs )
  23 {
  24         struct ldbminfo *li = (struct ldbminfo *) op->o_bd->be_private;
  25         Entry   *matched;
  26         struct berval   pdn;
  27         Entry   *e, *p = NULL;
  28         int     rc = -1;
  29         int             manageDSAit = get_manageDSAit( op );
  30         AttributeDescription *children = slap_schema.si_ad_children;
  31         AttributeDescription *entry = slap_schema.si_ad_entry;
  32
  33 #ifdef NEW_LOGGING
  34         LDAP_LOG( BACK_LDBM, ENTRY, "ldbm_back_delete: %s\n", op->o_req_dn.bv_val, 0, 0 );
  35 #else
  36         Debug(LDAP_DEBUG_ARGS, "==> ldbm_back_delete: %s\n", op->o_req_dn.bv_val, 0, 0);
  37 #endif
  38
  39         /* grab giant lock for writing */
  40         ldap_pvt_thread_rdwr_wlock(&li->li_giant_rwlock);
  41
  42         /* get entry with writer lock */
  43         e = dn2entry_w( op->o_bd, &op->o_req_ndn, &matched );
  44
  45         /* FIXME : dn2entry() should return non-glue entry */
  46         if ( e == NULL || ( !manageDSAit && is_entry_glue( e ))) {
  47 #ifdef NEW_LOGGING
  48                 LDAP_LOG( BACK_LDBM, INFO,
  49                         "ldbm_back_delete: no such object %s\n", op->o_req_dn.bv_val, 0, 0 );
  50 #else
  51                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: no such object %s\n",
  52                         op->o_req_dn.bv_val, 0, 0);
  53 #endif
  54
  55                 if ( matched != NULL ) {
  56                         rs->sr_matched = ch_strdup( matched->e_dn );
  57                         rs->sr_ref = is_entry_referral( matched )
  58                                 ? get_entry_referrals( op, matched )
  59                                 : NULL;
  60                         cache_return_entry_r( &li->li_cache, matched );
  61
  62                 } else {
  63                         BerVarray deref = op->o_bd->syncinfo ?
  64                                                           op->o_bd->syncinfo->provideruri_bv : default_referral;
  65                         rs->sr_ref = referral_rewrite( deref, NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
  66                 }
  67
  68                 ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
  69
  70                 rs->sr_err = LDAP_REFERRAL;
  71                 send_ldap_result( op, rs );
  72
  73                 if ( rs->sr_ref ) ber_bvarray_free( rs->sr_ref );
  74                 free( (char *)rs->sr_matched );
  75
  76                 return( -1 );
  77         }
  78
  79         /* check entry for "entry" acl */
  80         if ( ! access_allowed( op, e,
  81                 entry, NULL, ACL_WRITE, NULL ) )
  82         {
  83 #ifdef NEW_LOGGING
  84                 LDAP_LOG( BACK_LDBM, ERR,
  85                         "ldbm_back_delete: no write access to entry of (%s)\n",
  86                         op->o_req_dn.bv_val, 0, 0 );
  87 #else
  88                 Debug( LDAP_DEBUG_TRACE,
  89                         "<=- ldbm_back_delete: no write access to entry\n", 0,
  90                         0, 0 );
  91 #endif
  92
  93                 send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
  94                         "no write access to entry" );
  95
  96                 rc = LDAP_INSUFFICIENT_ACCESS;
  97                 goto return_results;
  98         }
  99
 100         if ( !manageDSAit && is_entry_referral( e ) ) {
 101                 /* parent is a referral, don't allow add */
 102                 /* parent is an alias, don't allow add */
 103                 rs->sr_ref = get_entry_referrals( op, e );
 104
 105 #ifdef NEW_LOGGING
 106                 LDAP_LOG( BACK_LDBM, INFO,
 107                         "ldbm_back_delete: entry (%s) is a referral.\n", e->e_dn, 0, 0 );
 108 #else
 109                 Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
 110                     0, 0 );
 111 #endif
 112
 113                 rs->sr_err = LDAP_REFERRAL;
 114                 rs->sr_matched = e->e_name.bv_val;
 115                 send_ldap_result( op, rs );
 116
 117                 if ( rs->sr_ref ) ber_bvarray_free( rs->sr_ref );
 118
 119                 rc = LDAP_REFERRAL;
 120                 goto return_results;
 121         }
 122
 123         if ( has_children( op->o_bd, e ) ) {
 124 #ifdef NEW_LOGGING
 125                 LDAP_LOG( BACK_LDBM, ERR,
 126                            "ldbm_back_delete: (%s) is a non-leaf node.\n", op->o_req_dn.bv_val, 0,0);
 127 #else
 128                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: non leaf %s\n",
 129                         op->o_req_dn.bv_val, 0, 0);
 130 #endif
 131
 132                 send_ldap_error( op, rs, LDAP_NOT_ALLOWED_ON_NONLEAF,
 133                         "subtree delete not supported" );
 134                 goto return_results;
 135         }
 136
 137         /* delete from parent's id2children entry */
 138         if( !be_issuffix( op->o_bd, &e->e_nname ) && (dnParent( &e->e_nname, &pdn ),
 139                 pdn.bv_len) ) {
 140                 if( (p = dn2entry_w( op->o_bd, &pdn, NULL )) == NULL) {
 141 #ifdef NEW_LOGGING
 142                         LDAP_LOG( BACK_LDBM, ERR,
 143                                 "ldbm_back_delete: parent of (%s) does not exist\n", op->o_req_dn, 0, 0 );
 144 #else
 145                         Debug( LDAP_DEBUG_TRACE,
 146                                 "<=- ldbm_back_delete: parent does not exist\n",
 147                                 0, 0, 0);
 148 #endif
 149
 150                         send_ldap_error( op, rs, LDAP_OTHER,
 151                                 "could not locate parent of entry" );
 152                         goto return_results;
 153                 }
 154
 155                 /* check parent for "children" acl */
 156                 if ( ! access_allowed( op, p,
 157                         children, NULL, ACL_WRITE, NULL ) )
 158                 {
 159 #ifdef NEW_LOGGING
 160                         LDAP_LOG( BACK_LDBM, ERR,
 161                                 "ldbm_back_delete: no access to parent of (%s)\n",
 162                                 op->o_req_dn.bv_val, 0, 0 );
 163 #else
 164                         Debug( LDAP_DEBUG_TRACE,
 165                                 "<=- ldbm_back_delete: no access to parent\n", 0,
 166                                 0, 0 );
 167 #endif
 168
 169                         send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
 170                                 "no write access to parent" );
 171                         goto return_results;
 172                 }
 173
 174         } else {
 175                 /* no parent, must be root to delete */
 176                 if( ! be_isroot( op->o_bd, &op->o_ndn ) ) {
 177                         if ( be_issuffix( op->o_bd, (struct berval *)&slap_empty_bv ) || be_isupdate( op->o_bd, &op->o_ndn ) ) {
 178                                 p = (Entry *)&slap_entry_root;
 179
 180                                 rc = access_allowed( op, p,
 181                                         children, NULL, ACL_WRITE, NULL );
 182                                 p = NULL;
 183
 184                                 /* check parent for "children" acl */
 185                                 if ( ! rc ) {
 186 #ifdef NEW_LOGGING
 187                                         LDAP_LOG( BACK_LDBM, ERR,
 188                                                 "ldbm_back_delete: no access "
 189                                                 "to parent of ("")\n", 0, 0, 0 );
 190 #else
 191                                         Debug( LDAP_DEBUG_TRACE,
 192                                                 "<=- ldbm_back_delete: no "
 193                                                 "access to parent\n", 0, 0, 0 );
 194 #endif
 195
 196                                         send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
 197                                                 "no write access to parent" );
 198                                         goto return_results;
 199                                 }
 200
 201                         } else {
 202 #ifdef NEW_LOGGING
 203                                 LDAP_LOG( BACK_LDBM, ERR,
 204                                         "ldbm_back_delete: (%s) has no "
 205                                         "parent & not a root.\n", op->o_ndn, 0, 0 );
 206 #else
 207                                 Debug( LDAP_DEBUG_TRACE,
 208                                         "<=- ldbm_back_delete: no parent & "
 209                                         "not root\n", 0, 0, 0);
 210 #endif
 211
 212                                 send_ldap_error( op, rs,
 213                                         LDAP_INSUFFICIENT_ACCESS,
 214                                         NULL );
 215                                 goto return_results;
 216                         }
 217                 }
 218         }
 219
 220         /* delete from dn2id mapping */
 221         if ( dn2id_delete( op->o_bd, &e->e_nname, e->e_id ) != 0 ) {
 222 #ifdef NEW_LOGGING
 223                 LDAP_LOG( BACK_LDBM, ERR,
 224                         "ldbm_back_delete: (%s) operations error\n", op->o_req_dn.bv_val, 0, 0 );
 225 #else
 226                 Debug(LDAP_DEBUG_ARGS,
 227                         "<=- ldbm_back_delete: operations error %s\n",
 228                         op->o_req_dn.bv_val, 0, 0);
 229 #endif
 230
 231                 send_ldap_error( op, rs, LDAP_OTHER,
 232                         "DN index delete failed" );
 233                 goto return_results;
 234         }
 235
 236         /* delete from disk and cache */
 237         if ( id2entry_delete( op->o_bd, e ) != 0 ) {
 238 #ifdef NEW_LOGGING
 239                 LDAP_LOG( BACK_LDBM, ERR,
 240                         "ldbm_back_delete: (%s) operations error\n", op->o_req_dn.bv_val, 0, 0 );
 241 #else
 242                 Debug(LDAP_DEBUG_ARGS,
 243                         "<=- ldbm_back_delete: operations error %s\n",
 244                         op->o_req_dn.bv_val, 0, 0);
 245 #endif
 246
 247                 send_ldap_error( op, rs, LDAP_OTHER,
 248                         "entry delete failed" );
 249                 goto return_results;
 250         }
 251
 252         /* delete attribute indices */
 253         (void) index_entry_del( op, e );
 254
 255         rs->sr_err = LDAP_SUCCESS;
 256         send_ldap_result( op, rs );
 257         rc = LDAP_SUCCESS;
 258
 259 return_results:;
 260         if( p != NULL ) {
 261                 /* free parent and writer lock */
 262                 cache_return_entry_w( &li->li_cache, p );
 263         }
 264
 265         /* free entry and writer lock */
 266         cache_return_entry_w( &li->li_cache, e );
 267
 268         ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
 269
 270         return rc;
 271 }