git.sur5r.net Git - openldap/blob - servers/slapd/back-ndb/delete.cpp

   1 /* delete.cpp - ndb backend delete routine */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2008-2014 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* ACKNOWLEDGEMENTS:
  17  * This work was initially developed by Howard Chu for inclusion
  18  * in OpenLDAP Software. This work was sponsored by MySQL.
  19  */
  20
  21 #include "portable.h"
  22
  23 #include <stdio.h>
  24 #include <ac/string.h>
  25
  26 #include "lutil.h"
  27 #include "back-ndb.h"
  28
  29 static struct berval glue_bv = BER_BVC("glue");
  30
  31 int
  32 ndb_back_delete( Operation *op, SlapReply *rs )
  33 {
  34         struct ndb_info *ni = (struct ndb_info *) op->o_bd->be_private;
  35         Entry   e = {0};
  36         Entry   p = {0};
  37         int             manageDSAit = get_manageDSAit( op );
  38         AttributeDescription *children = slap_schema.si_ad_children;
  39         AttributeDescription *entry = slap_schema.si_ad_entry;
  40
  41         NdbArgs NA;
  42         NdbRdns rdns;
  43         struct berval matched;
  44
  45         int     num_retries = 0;
  46
  47         int     rc;
  48
  49         LDAPControl **preread_ctrl = NULL;
  50         LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
  51         int num_ctrls = 0;
  52
  53         Debug( LDAP_DEBUG_ARGS, "==> " LDAP_XSTRING(ndb_back_delete) ": %s\n",
  54                 op->o_req_dn.bv_val, 0, 0 );
  55
  56         ctrls[num_ctrls] = 0;
  57
  58         /* allocate CSN */
  59         if ( BER_BVISNULL( &op->o_csn ) ) {
  60                 struct berval csn;
  61                 char csnbuf[LDAP_PVT_CSNSTR_BUFSIZE];
  62
  63                 csn.bv_val = csnbuf;
  64                 csn.bv_len = sizeof(csnbuf);
  65                 slap_get_csn( op, &csn, 1 );
  66         }
  67
  68         if ( !be_issuffix( op->o_bd, &op->o_req_ndn ) ) {
  69                 dnParent( &op->o_req_dn, &p.e_name );
  70                 dnParent( &op->o_req_ndn, &p.e_nname );
  71         }
  72
  73         /* Get our NDB handle */
  74         rs->sr_err = ndb_thread_handle( op, &NA.ndb );
  75         rdns.nr_num = 0;
  76         NA.rdns = &rdns;
  77         NA.ocs = NULL;
  78         NA.e = &e;
  79         e.e_name = op->o_req_dn;
  80         e.e_nname = op->o_req_ndn;
  81
  82         if( 0 ) {
  83 retry:  /* transaction retry */
  84                 NA.txn->close();
  85                 NA.txn = NULL;
  86                 Debug( LDAP_DEBUG_TRACE,
  87                         "==> " LDAP_XSTRING(ndb_back_delete) ": retrying...\n",
  88                         0, 0, 0 );
  89                 if ( op->o_abandon ) {
  90                         rs->sr_err = SLAPD_ABANDON;
  91                         goto return_results;
  92                 }
  93                 if ( NA.ocs ) {
  94                         ber_bvarray_free( NA.ocs );
  95                         NA.ocs = NULL;
  96                 }
  97                 ndb_trans_backoff( ++num_retries );
  98         }
  99
 100         /* begin transaction */
 101         NA.txn = NA.ndb->startTransaction();
 102         rs->sr_text = NULL;
 103         if( !NA.txn ) {
 104                 Debug( LDAP_DEBUG_TRACE,
 105                         LDAP_XSTRING(ndb_back_delete) ": startTransaction failed: %s (%d)\n",
 106                         NA.ndb->getNdbError().message, NA.ndb->getNdbError().code, 0 );
 107                 rs->sr_err = LDAP_OTHER;
 108                 rs->sr_text = "internal error";
 109                 goto return_results;
 110         }
 111
 112         /* get entry */
 113         rs->sr_err = ndb_entry_get_info( op, &NA, 1, &matched );
 114         switch( rs->sr_err ) {
 115         case 0:
 116         case LDAP_NO_SUCH_OBJECT:
 117                 break;
 118 #if 0
 119         case DB_LOCK_DEADLOCK:
 120         case DB_LOCK_NOTGRANTED:
 121                 goto retry;
 122 #endif
 123         case LDAP_BUSY:
 124                 rs->sr_text = "ldap server busy";
 125                 goto return_results;
 126         default:
 127                 rs->sr_err = LDAP_OTHER;
 128                 rs->sr_text = "internal error";
 129                 goto return_results;
 130         }
 131
 132         if ( rs->sr_err == LDAP_NO_SUCH_OBJECT ||
 133                 ( !manageDSAit && bvmatch( NA.ocs, &glue_bv ))) {
 134                 Debug( LDAP_DEBUG_ARGS,
 135                         "<=- " LDAP_XSTRING(ndb_back_delete) ": no such object %s\n",
 136                         op->o_req_dn.bv_val, 0, 0);
 137
 138                 if ( rs->sr_err == LDAP_NO_SUCH_OBJECT ) {
 139                         rs->sr_matched = matched.bv_val;
 140                         if ( NA.ocs )
 141                                 ndb_check_referral( op, rs, &NA );
 142                 } else {
 143                         rs->sr_matched = p.e_name.bv_val;
 144                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 145                 }
 146                 goto return_results;
 147         }
 148
 149         /* check parent for "children" acl */
 150         rs->sr_err = access_allowed( op, &p,
 151                 children, NULL, ACL_WDEL, NULL );
 152
 153         if ( !rs->sr_err  ) {
 154                 Debug( LDAP_DEBUG_TRACE,
 155                         "<=- " LDAP_XSTRING(ndb_back_delete) ": no write "
 156                         "access to parent\n", 0, 0, 0 );
 157                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 158                 rs->sr_text = "no write access to parent";
 159                 goto return_results;
 160         }
 161
 162         rs->sr_err = ndb_entry_get_data( op, &NA, 1 );
 163
 164         rs->sr_err = access_allowed( op, &e,
 165                 entry, NULL, ACL_WDEL, NULL );
 166
 167         if ( !rs->sr_err  ) {
 168                 Debug( LDAP_DEBUG_TRACE,
 169                         "<=- " LDAP_XSTRING(ndb_back_delete) ": no write access "
 170                         "to entry\n", 0, 0, 0 );
 171                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 172                 rs->sr_text = "no write access to entry";
 173                 goto return_results;
 174         }
 175
 176         if ( !manageDSAit && is_entry_referral( &e ) ) {
 177                 /* entry is a referral, don't allow delete */
 178                 rs->sr_ref = get_entry_referrals( op, &e );
 179
 180                 Debug( LDAP_DEBUG_TRACE,
 181                         LDAP_XSTRING(ndb_back_delete) ": entry is referral\n",
 182                         0, 0, 0 );
 183
 184                 rs->sr_err = LDAP_REFERRAL;
 185                 rs->sr_matched = e.e_name.bv_val;
 186                 rs->sr_flags = REP_REF_MUSTBEFREED;
 187                 goto return_results;
 188         }
 189
 190         if ( get_assert( op ) &&
 191                 ( test_filter( op, &e, (Filter *)get_assertion( op )) != LDAP_COMPARE_TRUE ))
 192         {
 193                 rs->sr_err = LDAP_ASSERTION_FAILED;
 194                 goto return_results;
 195         }
 196
 197         /* pre-read */
 198         if( op->o_preread ) {
 199                 if( preread_ctrl == NULL ) {
 200                         preread_ctrl = &ctrls[num_ctrls++];
 201                         ctrls[num_ctrls] = NULL;
 202                 }
 203                 if( slap_read_controls( op, rs, &e,
 204                         &slap_pre_read_bv, preread_ctrl ) )
 205                 {
 206                         Debug( LDAP_DEBUG_TRACE,
 207                                 "<=- " LDAP_XSTRING(ndb_back_delete) ": pre-read "
 208                                 "failed!\n", 0, 0, 0 );
 209                         if ( op->o_preread & SLAP_CONTROL_CRITICAL ) {
 210                                 /* FIXME: is it correct to abort
 211                                  * operation if control fails? */
 212                                 goto return_results;
 213                         }
 214                 }
 215         }
 216
 217         /* Can't do it if we have kids */
 218         rs->sr_err = ndb_has_children( &NA, &rc );
 219         if ( rs->sr_err ) {
 220                 Debug(LDAP_DEBUG_ARGS,
 221                         "<=- " LDAP_XSTRING(ndb_back_delete)
 222                         ": has_children failed: %s (%d)\n",
 223                         NA.txn->getNdbError().message, NA.txn->getNdbError().code, 0 );
 224                 rs->sr_err = LDAP_OTHER;
 225                 rs->sr_text = "internal error";
 226                 goto return_results;
 227         }
 228         if ( rc == LDAP_COMPARE_TRUE ) {
 229                 Debug(LDAP_DEBUG_ARGS,
 230                         "<=- " LDAP_XSTRING(ndb_back_delete)
 231                         ": non-leaf %s\n",
 232                         op->o_req_dn.bv_val, 0, 0);
 233                 rs->sr_err = LDAP_NOT_ALLOWED_ON_NONLEAF;
 234                 rs->sr_text = "subordinate objects must be deleted first";
 235                 goto return_results;
 236         }
 237
 238         /* delete info */
 239         rs->sr_err = ndb_entry_del_info( op->o_bd, &NA );
 240         if ( rs->sr_err != 0 ) {
 241                 Debug(LDAP_DEBUG_TRACE,
 242                         "<=- " LDAP_XSTRING(ndb_back_delete) ": del_info failed: %s (%d)\n",
 243                         NA.txn->getNdbError().message, NA.txn->getNdbError().code, 0 );
 244                 rs->sr_text = "DN index delete failed";
 245                 rs->sr_err = LDAP_OTHER;
 246                 goto return_results;
 247         }
 248
 249         /* delete data */
 250         rs->sr_err = ndb_entry_del_data( op->o_bd, &NA );
 251         if ( rs->sr_err != 0 ) {
 252                 Debug( LDAP_DEBUG_TRACE,
 253                         "<=- " LDAP_XSTRING(ndb_back_delete) ": del_data failed: %s (%d)\n",
 254                         NA.txn->getNdbError().message, NA.txn->getNdbError().code, 0 );
 255                 rs->sr_text = "entry delete failed";
 256                 rs->sr_err = LDAP_OTHER;
 257                 goto return_results;
 258         }
 259
 260         if( op->o_noop ) {
 261                 if (( rs->sr_err=NA.txn->execute( NdbTransaction::Rollback,
 262                         NdbOperation::AbortOnError, 1 )) != 0 ) {
 263                         rs->sr_text = "txn (no-op) failed";
 264                 } else {
 265                         rs->sr_err = LDAP_X_NO_OPERATION;
 266                 }
 267         } else {
 268                 if (( rs->sr_err=NA.txn->execute( NdbTransaction::Commit,
 269                         NdbOperation::AbortOnError, 1 )) != 0 ) {
 270                         rs->sr_text = "txn_commit failed";
 271                 } else {
 272                         rs->sr_err = LDAP_SUCCESS;
 273                 }
 274         }
 275
 276         if( rs->sr_err != LDAP_SUCCESS && rs->sr_err != LDAP_X_NO_OPERATION ) {
 277                 Debug( LDAP_DEBUG_TRACE,
 278                         LDAP_XSTRING(ndb_back_delete) ": txn_%s failed: %s (%d)\n",
 279                         op->o_noop ? "abort (no-op)" : "commit",
 280                         NA.txn->getNdbError().message, NA.txn->getNdbError().code );
 281                 rs->sr_err = LDAP_OTHER;
 282                 rs->sr_text = "commit failed";
 283
 284                 goto return_results;
 285         }
 286         NA.txn->close();
 287         NA.txn = NULL;
 288
 289         Debug( LDAP_DEBUG_TRACE,
 290                 LDAP_XSTRING(ndb_back_delete) ": deleted%s id=%08lx dn=\"%s\"\n",
 291                 op->o_noop ? " (no-op)" : "",
 292                 e.e_id, op->o_req_dn.bv_val );
 293         rs->sr_err = LDAP_SUCCESS;
 294         rs->sr_text = NULL;
 295         if( num_ctrls ) rs->sr_ctrls = ctrls;
 296
 297 return_results:
 298         if ( NA.ocs ) {
 299                 ber_bvarray_free_x( NA.ocs, op->o_tmpmemctx );
 300                 NA.ocs = NULL;
 301         }
 302
 303         /* free entry */
 304         if( e.e_attrs != NULL ) {
 305                 attrs_free( e.e_attrs );
 306                 e.e_attrs = NULL;
 307         }
 308
 309         if( NA.txn != NULL ) {
 310                 NA.txn->execute( Rollback );
 311                 NA.txn->close();
 312         }
 313
 314         send_ldap_result( op, rs );
 315         slap_graduate_commit_csn( op );
 316
 317         if( preread_ctrl != NULL && (*preread_ctrl) != NULL ) {
 318                 slap_sl_free( (*preread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 319                 slap_sl_free( *preread_ctrl, op->o_tmpmemctx );
 320         }
 321         return rs->sr_err;
 322 }