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 #ifdef LDAP_SLAPI
  38 #include "slapi/slapi.h"
  39 #endif
  40
  41 int
  42 do_delete(
  43     Operation   *op,
  44     SlapReply   *rs )
  45 {
  46         struct berval dn = BER_BVNULL;
  47
  48         Debug( LDAP_DEBUG_TRACE, "do_delete\n", 0, 0, 0 );
  49
  50         /*
  51          * Parse the delete request.  It looks like this:
  52          *
  53          *      DelRequest := DistinguishedName
  54          */
  55
  56         if ( ber_scanf( op->o_ber, "m", &dn ) == LBER_ERROR ) {
  57                 Debug( LDAP_DEBUG_ANY, "ber_scanf failed\n", 0, 0, 0 );
  58                 send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
  59                 return SLAPD_DISCONNECT;
  60         }
  61
  62         if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) {
  63                 Debug( LDAP_DEBUG_ANY, "do_delete: get_ctrls failed\n", 0, 0, 0 );
  64                 goto cleanup;
  65         }
  66
  67         rs->sr_err = dnPrettyNormal( NULL, &dn, &op->o_req_dn, &op->o_req_ndn,
  68                 op->o_tmpmemctx );
  69         if( rs->sr_err != LDAP_SUCCESS ) {
  70                 Debug( LDAP_DEBUG_ANY,
  71                         "do_delete: invalid dn (%s)\n", dn.bv_val, 0, 0 );
  72                 send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" );
  73                 goto cleanup;
  74         }
  75
  76         if( op->o_req_ndn.bv_len == 0 ) {
  77                 Debug( LDAP_DEBUG_ANY, "do_delete: root dse!\n", 0, 0, 0 );
  78                 /* protocolError would likely be a more appropriate error */
  79                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
  80                         "cannot delete the root DSE" );
  81                 goto cleanup;
  82
  83         } else if ( bvmatch( &op->o_req_ndn, &frontendDB->be_schemandn ) ) {
  84                 Debug( LDAP_DEBUG_ANY, "do_delete: subschema subentry!\n", 0, 0, 0 );
  85                 /* protocolError would likely be a more appropriate error */
  86                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
  87                         "cannot delete the root DSE" );
  88                 goto cleanup;
  89         }
  90
  91         Statslog( LDAP_DEBUG_STATS, "%s DEL dn=\"%s\"\n",
  92                 op->o_log_prefix, op->o_req_dn.bv_val, 0, 0, 0 );
  93
  94         op->o_bd = frontendDB;
  95         rs->sr_err = frontendDB->be_delete( op, rs );
  96
  97 cleanup:;
  98         slap_graduate_commit_csn( op );
  99
 100         op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
 101         op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
 102         return rs->sr_err;
 103 }
 104
 105 int
 106 fe_op_delete( Operation *op, SlapReply *rs )
 107 {
 108         struct berval   pdn = BER_BVNULL;
 109         int             manageDSAit;
 110         BackendDB *op_be;
 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, 1 );
 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                         op->o_bd = frontendDB;
 129                         send_ldap_result( op, rs );
 130                         op->o_bd = NULL;
 131
 132                         if (rs->sr_ref != default_referral) ber_bvarray_free( rs->sr_ref );
 133                 } else {
 134                         op->o_bd = frontendDB;
 135                         send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 136                                 "no global superior knowledge" );
 137                         op->o_bd = NULL;
 138                 }
 139                 goto cleanup;
 140         }
 141
 142         /* If we've got a glued backend, check the real backend */
 143         op_be = op->o_bd;
 144         if ( SLAP_GLUE_INSTANCE( op->o_bd )) {
 145                 op->o_bd = select_backend( &op->o_req_ndn, manageDSAit, 0 );
 146         }
 147
 148         /* check restrictions */
 149         if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
 150                 send_ldap_result( op, rs );
 151                 goto cleanup;
 152         }
 153
 154         /* check for referrals */
 155         if( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {
 156                 goto cleanup;
 157         }
 158
 159 #if defined( LDAP_SLAPI )
 160 #define pb op->o_pb
 161         if ( pb ) {
 162                 slapi_int_pblock_set_operation( pb, op );
 163                 slapi_pblock_set( pb, SLAPI_DELETE_TARGET, (void *)op->o_req_dn.bv_val );
 164                 slapi_pblock_set( pb, SLAPI_MANAGEDSAIT, (void *)manageDSAit );
 165
 166                 rs->sr_err = slapi_int_call_plugins( op->o_bd,
 167                         SLAPI_PLUGIN_PRE_DELETE_FN, pb );
 168                 if ( rs->sr_err < 0 ) {
 169                         /*
 170                          * A preoperation plugin failure will abort the
 171                          * entire operation.
 172                          */
 173                         Debug (LDAP_DEBUG_TRACE, "do_delete: "
 174                                 "delete preoperation plugin failed.\n", 0, 0, 0);
 175                         if ( ( slapi_pblock_get( pb, SLAPI_RESULT_CODE,
 176                                 (void *)&rs->sr_err ) != 0 ) ||
 177                                 rs->sr_err == LDAP_SUCCESS )
 178                         {
 179                                 rs->sr_err = LDAP_OTHER;
 180                         }
 181                         goto cleanup;
 182                 }
 183         }
 184 #endif /* defined( LDAP_SLAPI ) */
 185
 186         /*
 187          * do the delete if 1 && (2 || 3)
 188          * 1) there is a delete function implemented in this backend;
 189          * 2) this backend is master for what it holds;
 190          * 3) it's a replica and the dn supplied is the update_ndn.
 191          */
 192         if ( op->o_bd->be_delete ) {
 193                 /* do the update here */
 194                 int repl_user = be_isupdate( op );
 195 #ifndef SLAPD_MULTIMASTER
 196                 if ( !SLAP_SHADOW(op->o_bd) || repl_user )
 197 #endif
 198                 {
 199                         struct berval   org_req_dn = BER_BVNULL;
 200                         struct berval   org_req_ndn = BER_BVNULL;
 201                         struct berval   org_dn = BER_BVNULL;
 202                         struct berval   org_ndn = BER_BVNULL;
 203                         int             org_managedsait;
 204                         slap_callback   cb = { NULL, slap_replog_cb, NULL, NULL };
 205
 206                         op->o_bd = op_be;
 207
 208                         if ( !repl_user ) {
 209                                 struct berval csn = BER_BVNULL;
 210                                 char csnbuf[LDAP_LUTIL_CSNSTR_BUFSIZE];
 211                                 slap_get_csn( op, csnbuf, sizeof(csnbuf), &csn, 1 );
 212                         }
 213
 214 #ifdef SLAPD_MULTIMASTER
 215                         if ( !op->o_bd->be_update_ndn.bv_len || !repl_user )
 216 #endif
 217                         {
 218                                 cb.sc_next = op->o_callback;
 219                                 op->o_callback = &cb;
 220                         }
 221
 222                         op->o_bd->be_delete( op, rs );
 223
 224                         org_req_dn = op->o_req_dn;
 225                         org_req_ndn = op->o_req_ndn;
 226                         org_dn = op->o_dn;
 227                         org_ndn = op->o_ndn;
 228                         org_managedsait = get_manageDSAit( op );
 229                         op->o_dn = op->o_bd->be_rootdn;
 230                         op->o_ndn = op->o_bd->be_rootndn;
 231                         op->o_managedsait = SLAP_CONTROL_NONCRITICAL;
 232
 233                         while ( rs->sr_err == LDAP_SUCCESS &&
 234                                 op->o_delete_glue_parent )
 235                         {
 236                                 op->o_delete_glue_parent = 0;
 237                                 if ( !be_issuffix( op->o_bd, &op->o_req_ndn )) {
 238                                         slap_callback cb = { NULL };
 239                                         cb.sc_response = slap_null_cb;
 240                                         dnParent( &op->o_req_ndn, &pdn );
 241                                         op->o_req_dn = pdn;
 242                                         op->o_req_ndn = pdn;
 243                                         op->o_callback = &cb;
 244                                         op->o_bd->be_delete( op, rs );
 245                                 } else {
 246                                         break;
 247                                 }
 248                         }
 249
 250                         op->o_managedsait = org_managedsait;
 251                         op->o_dn = org_dn;
 252                         op->o_ndn = org_ndn;
 253                         op->o_req_dn = org_req_dn;
 254                         op->o_req_ndn = org_req_ndn;
 255                         op->o_delete_glue_parent = 0;
 256
 257 #ifndef SLAPD_MULTIMASTER
 258                 } else {
 259                         BerVarray defref = op->o_bd->be_update_refs
 260                                 ? op->o_bd->be_update_refs : default_referral;
 261
 262                         if ( defref != NULL ) {
 263                                 rs->sr_ref = referral_rewrite( defref,
 264                                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 265                                 if (!rs->sr_ref) rs->sr_ref = defref;
 266                                 rs->sr_err = LDAP_REFERRAL;
 267                                 send_ldap_result( op, rs );
 268
 269                                 if (rs->sr_ref != defref) ber_bvarray_free( rs->sr_ref );
 270
 271                         } else {
 272                                 send_ldap_error( op, rs,
 273                                         LDAP_UNWILLING_TO_PERFORM,
 274                                         "shadow context; no update referral" );
 275                         }
 276 #endif
 277                 }
 278
 279         } else {
 280                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 281                         "operation not supported within namingContext" );
 282         }
 283
 284 #if defined( LDAP_SLAPI )
 285         if ( pb != NULL && slapi_int_call_plugins( op->o_bd,
 286                 SLAPI_PLUGIN_POST_DELETE_FN, pb ) < 0)
 287         {
 288                 Debug(LDAP_DEBUG_TRACE,
 289                         "do_delete: delete postoperation plugins failed\n",
 290                         0, 0, 0 );
 291         }
 292 #endif /* defined( LDAP_SLAPI ) */
 293
 294 cleanup:;
 295         return rs->sr_err;
 296 }