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 1998-2004 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 "ldap_pvt.h"
  34 #include "slap.h"
  35
  36 #include "lutil.h"
  37
  38 #ifdef LDAP_SLAPI
  39 #include "slapi/slapi.h"
  40 #endif
  41
  42 int
  43 do_delete(
  44     Operation   *op,
  45     SlapReply   *rs )
  46 {
  47         struct berval dn = BER_BVNULL;
  48
  49         Debug( LDAP_DEBUG_TRACE, "do_delete\n", 0, 0, 0 );
  50
  51         /*
  52          * Parse the delete request.  It looks like this:
  53          *
  54          *      DelRequest := DistinguishedName
  55          */
  56
  57         if ( ber_scanf( op->o_ber, "m", &dn ) == LBER_ERROR ) {
  58                 Debug( LDAP_DEBUG_ANY, "ber_scanf failed\n", 0, 0, 0 );
  59                 send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
  60                 return SLAPD_DISCONNECT;
  61         }
  62
  63         if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) {
  64                 Debug( LDAP_DEBUG_ANY, "do_delete: get_ctrls failed\n", 0, 0, 0 );
  65                 goto cleanup;
  66         }
  67
  68         rs->sr_err = dnPrettyNormal( NULL, &dn, &op->o_req_dn, &op->o_req_ndn,
  69                 op->o_tmpmemctx );
  70         if( rs->sr_err != LDAP_SUCCESS ) {
  71                 Debug( LDAP_DEBUG_ANY,
  72                         "do_delete: invalid dn (%s)\n", dn.bv_val, 0, 0 );
  73                 send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" );
  74                 goto cleanup;
  75         }
  76
  77         if( op->o_req_ndn.bv_len == 0 ) {
  78                 Debug( LDAP_DEBUG_ANY, "do_delete: root dse!\n", 0, 0, 0 );
  79                 /* protocolError would likely be a more appropriate error */
  80                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
  81                         "cannot delete the root DSE" );
  82                 goto cleanup;
  83
  84         } else if ( bvmatch( &op->o_req_ndn, &frontendDB->be_schemandn ) ) {
  85                 Debug( LDAP_DEBUG_ANY, "do_delete: subschema subentry!\n", 0, 0, 0 );
  86                 /* protocolError would likely be a more appropriate error */
  87                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
  88                         "cannot delete the root DSE" );
  89                 goto cleanup;
  90         }
  91
  92         Statslog( LDAP_DEBUG_STATS, "conn=%lu op=%lu DEL dn=\"%s\"\n",
  93                 op->o_connid, op->o_opid, op->o_req_dn.bv_val, 0, 0 );
  94
  95         op->o_bd = frontendDB;
  96         rs->sr_err = frontendDB->be_delete( op, rs );
  97
  98 cleanup:;
  99         slap_graduate_commit_csn( op );
 100
 101         op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
 102         op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
 103         return rs->sr_err;
 104 }
 105
 106 int
 107 fe_op_delete( Operation *op, SlapReply *rs )
 108 {
 109         struct berval   pdn = BER_BVNULL;
 110         int             manageDSAit;
 111
 112         manageDSAit = get_manageDSAit( op );
 113
 114         /*
 115          * We could be serving multiple database backends.  Select the
 116          * appropriate one, or send a referral to our "referral server"
 117          * if we don't hold it.
 118          */
 119         op->o_bd = select_backend( &op->o_req_ndn, manageDSAit, 0 );
 120         if ( op->o_bd == NULL ) {
 121                 rs->sr_ref = referral_rewrite( default_referral,
 122                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 123
 124                 if (!rs->sr_ref) rs->sr_ref = default_referral;
 125                 if ( rs->sr_ref != NULL ) {
 126                         rs->sr_err = LDAP_REFERRAL;
 127
 128                         send_ldap_result( op, rs );
 129
 130                         if (rs->sr_ref != default_referral) ber_bvarray_free( rs->sr_ref );
 131                 } else {
 132                         send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 133                                 "no global superior knowledge" );
 134                 }
 135                 goto cleanup;
 136         }
 137
 138         /* check restrictions */
 139         if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
 140                 send_ldap_result( op, rs );
 141                 goto cleanup;
 142         }
 143
 144         /* check for referrals */
 145         if( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {
 146                 goto cleanup;
 147         }
 148
 149 #if defined( LDAP_SLAPI )
 150 #define pb op->o_pb
 151         if ( pb ) {
 152                 slapi_int_pblock_set_operation( pb, op );
 153                 slapi_pblock_set( pb, SLAPI_DELETE_TARGET, (void *)op->o_req_dn.bv_val );
 154                 slapi_pblock_set( pb, SLAPI_MANAGEDSAIT, (void *)manageDSAit );
 155
 156                 rs->sr_err = slapi_int_call_plugins( op->o_bd,
 157                         SLAPI_PLUGIN_PRE_DELETE_FN, pb );
 158                 if ( rs->sr_err < 0 ) {
 159                         /*
 160                          * A preoperation plugin failure will abort the
 161                          * entire operation.
 162                          */
 163                         Debug (LDAP_DEBUG_TRACE, "do_delete: "
 164                                 "delete preoperation plugin failed.\n", 0, 0, 0);
 165                         if ( ( slapi_pblock_get( pb, SLAPI_RESULT_CODE,
 166                                 (void *)&rs->sr_err ) != 0 ) ||
 167                                 rs->sr_err == LDAP_SUCCESS )
 168                         {
 169                                 rs->sr_err = LDAP_OTHER;
 170                         }
 171                         goto cleanup;
 172                 }
 173         }
 174 #endif /* defined( LDAP_SLAPI ) */
 175
 176         /*
 177          * do the delete if 1 && (2 || 3)
 178          * 1) there is a delete function implemented in this backend;
 179          * 2) this backend is master for what it holds;
 180          * 3) it's a replica and the dn supplied is the update_ndn.
 181          */
 182         if ( op->o_bd->be_delete ) {
 183                 /* do the update here */
 184                 int repl_user = be_isupdate( op );
 185 #ifndef SLAPD_MULTIMASTER
 186                 if ( !SLAP_SHADOW(op->o_bd) || repl_user )
 187 #endif
 188                 {
 189                         struct berval   org_req_dn = BER_BVNULL;
 190                         struct berval   org_req_ndn = BER_BVNULL;
 191                         struct berval   org_dn = BER_BVNULL;
 192                         struct berval   org_ndn = BER_BVNULL;
 193                         int             org_managedsait;
 194                         slap_callback   cb = { NULL, slap_replog_cb, NULL, NULL };
 195
 196                         if ( !repl_user ) {
 197                                 struct berval csn = BER_BVNULL;
 198                                 char csnbuf[LDAP_LUTIL_CSNSTR_BUFSIZE];
 199                                 slap_get_csn( op, csnbuf, sizeof(csnbuf), &csn, 1 );
 200                         }
 201
 202 #ifdef SLAPD_MULTIMASTER
 203                         if ( !op->o_bd->be_update_ndn.bv_len || !repl_user )
 204 #endif
 205                         {
 206                                 cb.sc_next = op->o_callback;
 207                                 op->o_callback = &cb;
 208                         }
 209
 210                         op->o_bd->be_delete( op, rs );
 211
 212                         org_req_dn = op->o_req_dn;
 213                         org_req_ndn = op->o_req_ndn;
 214                         org_dn = op->o_dn;
 215                         org_ndn = op->o_ndn;
 216                         org_managedsait = get_manageDSAit( op );
 217                         op->o_dn = op->o_bd->be_rootdn;
 218                         op->o_ndn = op->o_bd->be_rootndn;
 219                         op->o_managedsait = 1;
 220
 221                         while ( rs->sr_err == LDAP_SUCCESS &&
 222                                 op->o_delete_glue_parent )
 223                         {
 224                                 op->o_delete_glue_parent = 0;
 225                                 if ( !be_issuffix( op->o_bd, &op->o_req_ndn )) {
 226                                         slap_callback cb = { NULL };
 227                                         cb.sc_response = slap_null_cb;
 228                                         dnParent( &op->o_req_ndn, &pdn );
 229                                         op->o_req_dn = pdn;
 230                                         op->o_req_ndn = pdn;
 231                                         op->o_callback = &cb;
 232                                         op->o_bd->be_delete( op, rs );
 233                                 } else {
 234                                         break;
 235                                 }
 236                         }
 237
 238                         op->o_managedsait = org_managedsait;
 239                         op->o_dn = org_dn;
 240                         op->o_ndn = org_ndn;
 241                         op->o_req_dn = org_req_dn;
 242                         op->o_req_ndn = org_req_ndn;
 243                         op->o_delete_glue_parent = 0;
 244
 245 #ifndef SLAPD_MULTIMASTER
 246                 } else {
 247                         BerVarray defref = op->o_bd->be_update_refs
 248                                 ? op->o_bd->be_update_refs : default_referral;
 249
 250                         if ( defref != NULL ) {
 251                                 rs->sr_ref = referral_rewrite( defref,
 252                                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 253                                 if (!rs->sr_ref) rs->sr_ref = defref;
 254                                 rs->sr_err = LDAP_REFERRAL;
 255                                 send_ldap_result( op, rs );
 256
 257                                 if (rs->sr_ref != defref) ber_bvarray_free( rs->sr_ref );
 258
 259                         } else {
 260                                 send_ldap_error( op, rs,
 261                                         LDAP_UNWILLING_TO_PERFORM,
 262                                         "shadow context; no update referral" );
 263                         }
 264 #endif
 265                 }
 266
 267         } else {
 268                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 269                         "operation not supported within namingContext" );
 270         }
 271
 272 #if defined( LDAP_SLAPI )
 273         if ( pb != NULL && slapi_int_call_plugins( op->o_bd,
 274                 SLAPI_PLUGIN_POST_DELETE_FN, pb ) < 0)
 275         {
 276                 Debug(LDAP_DEBUG_TRACE,
 277                         "do_delete: delete postoperation plugins failed\n",
 278                         0, 0, 0 );
 279         }
 280 #endif /* defined( LDAP_SLAPI ) */
 281
 282 cleanup:;
 283         return rs->sr_err;
 284 }