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

   1 /* $OpenLDAP$ */
   2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   3  *
   4  * Copyright 1998-2005 The OpenLDAP Foundation.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted only as authorized by the OpenLDAP
   9  * Public License.
  10  *
  11  * A copy of this license is available in the file LICENSE in the
  12  * top-level directory of the distribution or, alternatively, at
  13  * <http://www.OpenLDAP.org/license.html>.
  14  */
  15 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  16  * All rights reserved.
  17  *
  18  * Redistribution and use in source and binary forms are permitted
  19  * provided that this notice is preserved and that due credit is given
  20  * to the University of Michigan at Ann Arbor. The name of the University
  21  * may not be used to endorse or promote products derived from this
  22  * software without specific prior written permission. This software
  23  * is provided ``as is'' without express or implied warranty.
  24  */
  25
  26 #include "portable.h"
  27
  28 #include <stdio.h>
  29
  30 #include <ac/string.h>
  31 #include <ac/socket.h>
  32
  33 #include "slap.h"
  34
  35 #include "lutil.h"
  36
  37 int
  38 do_delete(
  39     Operation   *op,
  40     SlapReply   *rs )
  41 {
  42         struct berval dn = BER_BVNULL;
  43
  44         Debug( LDAP_DEBUG_TRACE, "do_delete\n", 0, 0, 0 );
  45
  46         /*
  47          * Parse the delete request.  It looks like this:
  48          *
  49          *      DelRequest := DistinguishedName
  50          */
  51
  52         if ( ber_scanf( op->o_ber, "m", &dn ) == LBER_ERROR ) {
  53                 Debug( LDAP_DEBUG_ANY, "ber_scanf failed\n", 0, 0, 0 );
  54                 send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
  55                 return SLAPD_DISCONNECT;
  56         }
  57
  58         if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) {
  59                 Debug( LDAP_DEBUG_ANY, "do_delete: get_ctrls failed\n", 0, 0, 0 );
  60                 goto cleanup;
  61         }
  62
  63         rs->sr_err = dnPrettyNormal( NULL, &dn, &op->o_req_dn, &op->o_req_ndn,
  64                 op->o_tmpmemctx );
  65         if( rs->sr_err != LDAP_SUCCESS ) {
  66                 Debug( LDAP_DEBUG_ANY,
  67                         "do_delete: invalid dn (%s)\n", dn.bv_val, 0, 0 );
  68                 send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" );
  69                 goto cleanup;
  70         }
  71
  72         if( op->o_req_ndn.bv_len == 0 ) {
  73                 Debug( LDAP_DEBUG_ANY, "do_delete: root dse!\n", 0, 0, 0 );
  74                 /* protocolError would likely be a more appropriate error */
  75                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
  76                         "cannot delete the root DSE" );
  77                 goto cleanup;
  78
  79         } else if ( bvmatch( &op->o_req_ndn, &frontendDB->be_schemandn ) ) {
  80                 Debug( LDAP_DEBUG_ANY, "do_delete: subschema subentry!\n", 0, 0, 0 );
  81                 /* protocolError would likely be a more appropriate error */
  82                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
  83                         "cannot delete the root DSE" );
  84                 goto cleanup;
  85         }
  86
  87         Statslog( LDAP_DEBUG_STATS, "%s DEL dn=\"%s\"\n",
  88                 op->o_log_prefix, op->o_req_dn.bv_val, 0, 0, 0 );
  89
  90         op->o_bd = frontendDB;
  91         rs->sr_err = frontendDB->be_delete( op, rs );
  92
  93 cleanup:;
  94         slap_graduate_commit_csn( op );
  95
  96         op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
  97         op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
  98         return rs->sr_err;
  99 }
 100
 101 int
 102 fe_op_delete( Operation *op, SlapReply *rs )
 103 {
 104         struct berval   pdn = BER_BVNULL;
 105         int             manageDSAit;
 106         BackendDB *op_be;
 107
 108         manageDSAit = get_manageDSAit( op );
 109
 110         /*
 111          * We could be serving multiple database backends.  Select the
 112          * appropriate one, or send a referral to our "referral server"
 113          * if we don't hold it.
 114          */
 115         op->o_bd = select_backend( &op->o_req_ndn, manageDSAit, 1 );
 116         if ( op->o_bd == NULL ) {
 117                 rs->sr_ref = referral_rewrite( default_referral,
 118                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 119
 120                 if (!rs->sr_ref) rs->sr_ref = default_referral;
 121                 if ( rs->sr_ref != NULL ) {
 122                         rs->sr_err = LDAP_REFERRAL;
 123
 124                         op->o_bd = frontendDB;
 125                         send_ldap_result( op, rs );
 126                         op->o_bd = NULL;
 127
 128                         if (rs->sr_ref != default_referral) ber_bvarray_free( rs->sr_ref );
 129                 } else {
 130                         op->o_bd = frontendDB;
 131                         send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 132                                 "no global superior knowledge" );
 133                         op->o_bd = NULL;
 134                 }
 135                 goto cleanup;
 136         }
 137
 138         /* If we've got a glued backend, check the real backend */
 139         op_be = op->o_bd;
 140         if ( SLAP_GLUE_INSTANCE( op->o_bd )) {
 141                 op->o_bd = select_backend( &op->o_req_ndn, manageDSAit, 0 );
 142         }
 143
 144         /* check restrictions */
 145         if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
 146                 send_ldap_result( op, rs );
 147                 goto cleanup;
 148         }
 149
 150         /* check for referrals */
 151         if( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {
 152                 goto cleanup;
 153         }
 154
 155         /*
 156          * do the delete if 1 && (2 || 3)
 157          * 1) there is a delete function implemented in this backend;
 158          * 2) this backend is master for what it holds;
 159          * 3) it's a replica and the dn supplied is the update_ndn.
 160          */
 161         if ( op->o_bd->be_delete ) {
 162                 /* do the update here */
 163                 int repl_user = be_isupdate( op );
 164 #ifndef SLAPD_MULTIMASTER
 165                 if ( !SLAP_SHADOW(op->o_bd) || repl_user )
 166 #endif
 167                 {
 168                         struct berval   org_req_dn = BER_BVNULL;
 169                         struct berval   org_req_ndn = BER_BVNULL;
 170                         struct berval   org_dn = BER_BVNULL;
 171                         struct berval   org_ndn = BER_BVNULL;
 172                         int             org_managedsait;
 173                         slap_callback   cb = { NULL, slap_replog_cb, NULL, NULL };
 174
 175                         op->o_bd = op_be;
 176
 177                         if ( !repl_user ) {
 178                                 struct berval csn = BER_BVNULL;
 179                                 char csnbuf[LDAP_LUTIL_CSNSTR_BUFSIZE];
 180                                 slap_get_csn( op, csnbuf, sizeof(csnbuf), &csn, 1 );
 181                         }
 182
 183 #ifdef SLAPD_MULTIMASTER
 184                         if ( !op->o_bd->be_update_ndn.bv_len || !repl_user )
 185 #endif
 186                         {
 187                                 cb.sc_next = op->o_callback;
 188                                 op->o_callback = &cb;
 189                         }
 190
 191                         op->o_bd->be_delete( op, rs );
 192
 193                         org_req_dn = op->o_req_dn;
 194                         org_req_ndn = op->o_req_ndn;
 195                         org_dn = op->o_dn;
 196                         org_ndn = op->o_ndn;
 197                         org_managedsait = get_manageDSAit( op );
 198                         op->o_dn = op->o_bd->be_rootdn;
 199                         op->o_ndn = op->o_bd->be_rootndn;
 200                         op->o_managedsait = SLAP_CONTROL_NONCRITICAL;
 201
 202                         while ( rs->sr_err == LDAP_SUCCESS &&
 203                                 op->o_delete_glue_parent )
 204                         {
 205                                 op->o_delete_glue_parent = 0;
 206                                 if ( !be_issuffix( op->o_bd, &op->o_req_ndn )) {
 207                                         slap_callback cb = { NULL, NULL, NULL, NULL };
 208                                         cb.sc_response = slap_null_cb;
 209                                         dnParent( &op->o_req_ndn, &pdn );
 210                                         op->o_req_dn = pdn;
 211                                         op->o_req_ndn = pdn;
 212                                         op->o_callback = &cb;
 213                                         op->o_bd->be_delete( op, rs );
 214                                 } else {
 215                                         break;
 216                                 }
 217                         }
 218
 219                         op->o_managedsait = org_managedsait;
 220                         op->o_dn = org_dn;
 221                         op->o_ndn = org_ndn;
 222                         op->o_req_dn = org_req_dn;
 223                         op->o_req_ndn = org_req_ndn;
 224                         op->o_delete_glue_parent = 0;
 225
 226 #ifndef SLAPD_MULTIMASTER
 227                 } else {
 228                         BerVarray defref = op->o_bd->be_update_refs
 229                                 ? op->o_bd->be_update_refs : default_referral;
 230
 231                         if ( defref != NULL ) {
 232                                 rs->sr_ref = referral_rewrite( defref,
 233                                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 234                                 if (!rs->sr_ref) rs->sr_ref = defref;
 235                                 rs->sr_err = LDAP_REFERRAL;
 236                                 send_ldap_result( op, rs );
 237
 238                                 if (rs->sr_ref != defref) ber_bvarray_free( rs->sr_ref );
 239
 240                         } else {
 241                                 send_ldap_error( op, rs,
 242                                         LDAP_UNWILLING_TO_PERFORM,
 243                                         "shadow context; no update referral" );
 244                         }
 245 #endif
 246                 }
 247
 248         } else {
 249                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 250                         "operation not supported within namingContext" );
 251         }
 252
 253 cleanup:;
 254         return rs->sr_err;
 255 }