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openldap  2.4.31
Functions | Variables
delete.cpp File Reference
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include "lutil.h"
#include "back-ndb.h"

Go to the source code of this file.

Functions

int ndb_back_delete (Operation *op, SlapReply *rs)

Variables

static struct berval = BER_BVC("glue")

Function Documentation

int ndb_back_delete ( Operation op,
SlapReply rs 
)

Definition at line 32 of file delete.cpp.

{
       struct ndb_info *ni = (struct ndb_info *) op->o_bd->be_private;
       Entry  e = {0};
       Entry  p = {0};
       int           manageDSAit = get_manageDSAit( op );
       AttributeDescription *children = slap_schema.si_ad_children;
       AttributeDescription *entry = slap_schema.si_ad_entry;

       NdbArgs NA;
       NdbRdns rdns;
       struct berval matched;

       int    num_retries = 0;

       int     rc;

       LDAPControl **preread_ctrl = NULL;
       LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
       int num_ctrls = 0;

       Debug( LDAP_DEBUG_ARGS, "==> " LDAP_XSTRING(ndb_back_delete) ": %s\n",
              op->o_req_dn.bv_val, 0, 0 );

       ctrls[num_ctrls] = 0;

       /* allocate CSN */
       if ( BER_BVISNULL( &op->o_csn ) ) {
              struct berval csn;
              char csnbuf[LDAP_PVT_CSNSTR_BUFSIZE];

              csn.bv_val = csnbuf;
              csn.bv_len = sizeof(csnbuf);
              slap_get_csn( op, &csn, 1 );
       }

       if ( !be_issuffix( op->o_bd, &op->o_req_ndn ) ) {
              dnParent( &op->o_req_dn, &p.e_name );
              dnParent( &op->o_req_ndn, &p.e_nname );
       }

       /* Get our NDB handle */
       rs->sr_err = ndb_thread_handle( op, &NA.ndb );
       rdns.nr_num = 0;
       NA.rdns = &rdns;
       NA.ocs = NULL;
       NA.e = &e;
       e.e_name = op->o_req_dn;
       e.e_nname = op->o_req_ndn;

       if( 0 ) {
retry: /* transaction retry */
              NA.txn->close();
              NA.txn = NULL;
              Debug( LDAP_DEBUG_TRACE,
                     "==> " LDAP_XSTRING(ndb_back_delete) ": retrying...\n",
                     0, 0, 0 );
              if ( op->o_abandon ) {
                     rs->sr_err = SLAPD_ABANDON;
                     goto return_results;
              }
              if ( NA.ocs ) {
                     ber_bvarray_free( NA.ocs );
                     NA.ocs = NULL;
              }
              ndb_trans_backoff( ++num_retries );
       }

       /* begin transaction */
       NA.txn = NA.ndb->startTransaction();
       rs->sr_text = NULL;
       if( !NA.txn ) {
              Debug( LDAP_DEBUG_TRACE,
                     LDAP_XSTRING(ndb_back_delete) ": startTransaction failed: %s (%d)\n",
                     NA.ndb->getNdbError().message, NA.ndb->getNdbError().code, 0 );
              rs->sr_err = LDAP_OTHER;
              rs->sr_text = "internal error";
              goto return_results;
       }

       /* get entry */
       rs->sr_err = ndb_entry_get_info( op, &NA, 1, &matched );
       switch( rs->sr_err ) {
       case 0:
       case LDAP_NO_SUCH_OBJECT:
              break;
#if 0
       case DB_LOCK_DEADLOCK:
       case DB_LOCK_NOTGRANTED:
              goto retry;
#endif
       case LDAP_BUSY:
              rs->sr_text = "ldap server busy";
              goto return_results;
       default:
              rs->sr_err = LDAP_OTHER;
              rs->sr_text = "internal error";
              goto return_results;
       }

       if ( rs->sr_err == LDAP_NO_SUCH_OBJECT ||
              ( !manageDSAit && bvmatch( NA.ocs, &glue_bv ))) {
              Debug( LDAP_DEBUG_ARGS,
                     "<=- " LDAP_XSTRING(ndb_back_delete) ": no such object %s\n",
                     op->o_req_dn.bv_val, 0, 0);

              if ( rs->sr_err == LDAP_NO_SUCH_OBJECT ) {
                     rs->sr_matched = matched.bv_val;
                     if ( NA.ocs )
                            ndb_check_referral( op, rs, &NA );
              } else {
                     rs->sr_matched = p.e_name.bv_val;
                     rs->sr_err = LDAP_NO_SUCH_OBJECT;
              }
              goto return_results;
       }

       /* check parent for "children" acl */
       rs->sr_err = access_allowed( op, &p,
              children, NULL, ACL_WDEL, NULL );

       if ( !rs->sr_err  ) {
              Debug( LDAP_DEBUG_TRACE,
                     "<=- " LDAP_XSTRING(ndb_back_delete) ": no write "
                     "access to parent\n", 0, 0, 0 );
              rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
              rs->sr_text = "no write access to parent";
              goto return_results;
       }

       rs->sr_err = ndb_entry_get_data( op, &NA, 1 );

       rs->sr_err = access_allowed( op, &e,
              entry, NULL, ACL_WDEL, NULL );

       if ( !rs->sr_err  ) {
              Debug( LDAP_DEBUG_TRACE,
                     "<=- " LDAP_XSTRING(ndb_back_delete) ": no write access "
                     "to entry\n", 0, 0, 0 );
              rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
              rs->sr_text = "no write access to entry";
              goto return_results;
       }

       if ( !manageDSAit && is_entry_referral( &e ) ) {
              /* entry is a referral, don't allow delete */
              rs->sr_ref = get_entry_referrals( op, &e );

              Debug( LDAP_DEBUG_TRACE,
                     LDAP_XSTRING(ndb_back_delete) ": entry is referral\n",
                     0, 0, 0 );

              rs->sr_err = LDAP_REFERRAL;
              rs->sr_matched = e.e_name.bv_val;
              rs->sr_flags = REP_REF_MUSTBEFREED;
              goto return_results;
       }

       if ( get_assert( op ) &&
              ( test_filter( op, &e, (Filter *)get_assertion( op )) != LDAP_COMPARE_TRUE ))
       {
              rs->sr_err = LDAP_ASSERTION_FAILED;
              goto return_results;
       }

       /* pre-read */
       if( op->o_preread ) {
              if( preread_ctrl == NULL ) {
                     preread_ctrl = &ctrls[num_ctrls++];
                     ctrls[num_ctrls] = NULL;
              }
              if( slap_read_controls( op, rs, &e,
                     &slap_pre_read_bv, preread_ctrl ) )
              {
                     Debug( LDAP_DEBUG_TRACE,
                            "<=- " LDAP_XSTRING(ndb_back_delete) ": pre-read "
                            "failed!\n", 0, 0, 0 );
                     if ( op->o_preread & SLAP_CONTROL_CRITICAL ) {
                            /* FIXME: is it correct to abort
                             * operation if control fails? */
                            goto return_results;
                     }
              }
       }

       /* Can't do it if we have kids */
       rs->sr_err = ndb_has_children( &NA, &rc );
       if ( rs->sr_err ) {
              Debug(LDAP_DEBUG_ARGS,
                     "<=- " LDAP_XSTRING(ndb_back_delete)
                     ": has_children failed: %s (%d)\n",
                     NA.txn->getNdbError().message, NA.txn->getNdbError().code, 0 );
              rs->sr_err = LDAP_OTHER;
              rs->sr_text = "internal error";
              goto return_results;
       }
       if ( rc == LDAP_COMPARE_TRUE ) {
              Debug(LDAP_DEBUG_ARGS,
                     "<=- " LDAP_XSTRING(ndb_back_delete)
                     ": non-leaf %s\n",
                     op->o_req_dn.bv_val, 0, 0);
              rs->sr_err = LDAP_NOT_ALLOWED_ON_NONLEAF;
              rs->sr_text = "subordinate objects must be deleted first";
              goto return_results;
       }

       /* delete info */
       rs->sr_err = ndb_entry_del_info( op->o_bd, &NA );
       if ( rs->sr_err != 0 ) {
              Debug(LDAP_DEBUG_TRACE,
                     "<=- " LDAP_XSTRING(ndb_back_delete) ": del_info failed: %s (%d)\n",
                     NA.txn->getNdbError().message, NA.txn->getNdbError().code, 0 );
              rs->sr_text = "DN index delete failed";
              rs->sr_err = LDAP_OTHER;
              goto return_results;
       }

       /* delete data */
       rs->sr_err = ndb_entry_del_data( op->o_bd, &NA );
       if ( rs->sr_err != 0 ) {
              Debug( LDAP_DEBUG_TRACE,
                     "<=- " LDAP_XSTRING(ndb_back_delete) ": del_data failed: %s (%d)\n",
                     NA.txn->getNdbError().message, NA.txn->getNdbError().code, 0 );
              rs->sr_text = "entry delete failed";
              rs->sr_err = LDAP_OTHER;
              goto return_results;
       }

       if( op->o_noop ) {
              if (( rs->sr_err=NA.txn->execute( NdbTransaction::Rollback,
                     NdbOperation::AbortOnError, 1 )) != 0 ) {
                     rs->sr_text = "txn (no-op) failed";
              } else {
                     rs->sr_err = LDAP_X_NO_OPERATION;
              }
       } else {
              if (( rs->sr_err=NA.txn->execute( NdbTransaction::Commit,
                     NdbOperation::AbortOnError, 1 )) != 0 ) {
                     rs->sr_text = "txn_commit failed";
              } else {
                     rs->sr_err = LDAP_SUCCESS;
              }
       }

       if( rs->sr_err != LDAP_SUCCESS && rs->sr_err != LDAP_X_NO_OPERATION ) {
              Debug( LDAP_DEBUG_TRACE,
                     LDAP_XSTRING(ndb_back_delete) ": txn_%s failed: %s (%d)\n",
                     op->o_noop ? "abort (no-op)" : "commit",
                     NA.txn->getNdbError().message, NA.txn->getNdbError().code );
              rs->sr_err = LDAP_OTHER;
              rs->sr_text = "commit failed";

              goto return_results;
       }
       NA.txn->close();
       NA.txn = NULL;

       Debug( LDAP_DEBUG_TRACE,
              LDAP_XSTRING(ndb_back_delete) ": deleted%s id=%08lx dn=\"%s\"\n",
              op->o_noop ? " (no-op)" : "",
              e.e_id, op->o_req_dn.bv_val );
       rs->sr_err = LDAP_SUCCESS;
       rs->sr_text = NULL;
       if( num_ctrls ) rs->sr_ctrls = ctrls;

return_results:
       if ( NA.ocs ) {
              ber_bvarray_free_x( NA.ocs, op->o_tmpmemctx );
              NA.ocs = NULL;
       }

       /* free entry */
       if( e.e_attrs != NULL ) {
              attrs_free( e.e_attrs );
              e.e_attrs = NULL;
       }

       if( NA.txn != NULL ) {
              NA.txn->execute( Rollback );
              NA.txn->close();
       }

       send_ldap_result( op, rs );
       slap_graduate_commit_csn( op );

       if( preread_ctrl != NULL && (*preread_ctrl) != NULL ) {
              slap_sl_free( (*preread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
              slap_sl_free( *preread_ctrl, op->o_tmpmemctx );
       }
       return rs->sr_err;
}

Variable Documentation

struct berval = BER_BVC("glue") [static]

Definition at line 29 of file delete.cpp.